1 | /*! VelocityJS.org (1.0.0). (C) 2014 Julian Shapiro. MIT @license: en.wikipedia.org/wiki/MIT_License */
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2 |
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3 | /*************************
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4 | Velocity jQuery Shim
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5 | *************************/
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6 |
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7 | /*! VelocityJS.org jQuery Shim (1.0.1). (C) 2014 The jQuery Foundation. MIT @license: en.wikipedia.org/wiki/MIT_License. */
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8 |
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9 | /* This file contains the jQuery functions that Velocity relies on, thereby removing Velocity's dependency on a full copy of jQuery, and allowing it to work in any environment. */
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10 | /* These shimmed functions are only used if jQuery isn't present. If both this shim and jQuery are loaded, Velocity defaults to jQuery proper. */
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11 | /* Browser support: Using this shim instead of jQuery proper removes support for IE8. */
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12 |
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13 | ;(function (window) {
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14 | /***************
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15 | Setup
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16 | ***************/
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17 |
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18 | /* If jQuery is already loaded, there's no point in loading this shim. */
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19 | if (window.jQuery) {
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20 | return;
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21 | }
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22 |
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23 | /* jQuery base. */
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24 | var $ = function (selector, context) {
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25 | return new $.fn.init(selector, context);
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26 | };
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27 |
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28 | /********************
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29 | Private Methods
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30 | ********************/
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31 |
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32 | /* jQuery */
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33 | $.isWindow = function (obj) {
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34 | /* jshint eqeqeq: false */
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35 | return obj != null && obj == obj.window;
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36 | };
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37 |
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38 | /* jQuery */
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39 | $.type = function (obj) {
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40 | if (obj == null) {
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41 | return obj + "";
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42 | }
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43 |
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44 | return typeof obj === "object" || typeof obj === "function" ?
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45 | class2type[toString.call(obj)] || "object" :
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46 | typeof obj;
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47 | };
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48 |
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49 | /* jQuery */
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50 | $.isArray = Array.isArray || function (obj) {
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51 | return $.type(obj) === "array";
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52 | };
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53 |
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54 | /* jQuery */
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55 | function isArraylike (obj) {
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56 | var length = obj.length,
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57 | type = $.type(obj);
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58 |
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59 | if (type === "function" || $.isWindow(obj)) {
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60 | return false;
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61 | }
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62 |
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63 | if (obj.nodeType === 1 && length) {
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64 | return true;
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65 | }
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66 |
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67 | return type === "array" || length === 0 || typeof length === "number" && length > 0 && (length - 1) in obj;
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68 | }
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69 |
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70 | /***************
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71 | $ Methods
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72 | ***************/
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73 |
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74 | /* jQuery: Support removed for IE<9. */
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75 | $.isPlainObject = function (obj) {
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76 | var key;
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77 |
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78 | if (!obj || $.type(obj) !== "object" || obj.nodeType || $.isWindow(obj)) {
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79 | return false;
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80 | }
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81 |
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82 | try {
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83 | if (obj.constructor &&
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84 | !hasOwn.call(obj, "constructor") &&
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85 | !hasOwn.call(obj.constructor.prototype, "isPrototypeOf")) {
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86 | return false;
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87 | }
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88 | } catch (e) {
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89 | return false;
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90 | }
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91 |
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92 | for (key in obj) {}
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93 |
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94 | return key === undefined || hasOwn.call(obj, key);
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95 | };
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96 |
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97 | /* jQuery */
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98 | $.each = function(obj, callback, args) {
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99 | var value,
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100 | i = 0,
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101 | length = obj.length,
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102 | isArray = isArraylike(obj);
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103 |
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104 | if (args) {
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105 | if (isArray) {
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106 | for (; i < length; i++) {
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107 | value = callback.apply(obj[i], args);
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108 |
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109 | if (value === false) {
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110 | break;
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111 | }
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112 | }
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113 | } else {
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114 | for (i in obj) {
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115 | value = callback.apply(obj[i], args);
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116 |
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117 | if (value === false) {
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118 | break;
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119 | }
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120 | }
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121 | }
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122 |
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123 | } else {
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124 | if (isArray) {
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125 | for (; i < length; i++) {
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126 | value = callback.call(obj[i], i, obj[i]);
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127 |
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128 | if (value === false) {
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129 | break;
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130 | }
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131 | }
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132 | } else {
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133 | for (i in obj) {
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134 | value = callback.call(obj[i], i, obj[i]);
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135 |
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136 | if (value === false) {
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137 | break;
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138 | }
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139 | }
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140 | }
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141 | }
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142 |
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143 | return obj;
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144 | };
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145 |
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146 | /* Custom */
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147 | $.data = function (node, key, value) {
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148 | /* $.getData() */
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149 | if (value === undefined) {
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150 | var id = node[$.expando],
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151 | store = id && cache[id];
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152 |
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153 | if (key === undefined) {
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154 | return store;
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155 | } else if (store) {
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156 | if (key in store) {
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157 | return store[key];
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158 | }
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159 | }
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160 | /* $.setData() */
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161 | } else if (key !== undefined) {
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162 | var id = node[$.expando] || (node[$.expando] = ++$.uuid);
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163 |
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164 | cache[id] = cache[id] || {};
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165 | cache[id][key] = value;
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166 |
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167 | return value;
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168 | }
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169 | };
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170 |
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171 | /* Custom */
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172 | $.removeData = function (node, keys) {
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173 | var id = node[$.expando],
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174 | store = id && cache[id];
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175 |
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176 | if (store) {
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177 | $.each(keys, function(_, key) {
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178 | delete store[key];
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179 | });
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180 | }
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181 | };
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182 |
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183 | /* jQuery */
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184 | $.extend = function () {
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185 | var src, copyIsArray, copy, name, options, clone,
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186 | target = arguments[0] || {},
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187 | i = 1,
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188 | length = arguments.length,
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189 | deep = false;
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190 |
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191 | if (typeof target === "boolean") {
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192 | deep = target;
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193 |
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194 | target = arguments[i] || {};
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195 | i++;
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196 | }
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197 |
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198 | if (typeof target !== "object" && $.type(target) !== "function") {
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199 | target = {};
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200 | }
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201 |
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202 | if (i === length) {
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203 | target = this;
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204 | i--;
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205 | }
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206 |
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207 | for (; i < length; i++) {
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208 | if ((options = arguments[i]) != null) {
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209 | for (name in options) {
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210 | src = target[name];
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211 | copy = options[name];
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212 |
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213 | if (target === copy) {
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214 | continue;
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215 | }
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216 |
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217 | if (deep && copy && ($.isPlainObject(copy) || (copyIsArray = $.isArray(copy)))) {
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218 | if (copyIsArray) {
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219 | copyIsArray = false;
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220 | clone = src && $.isArray(src) ? src : [];
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221 |
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222 | } else {
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223 | clone = src && $.isPlainObject(src) ? src : {};
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224 | }
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225 |
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226 | target[name] = $.extend(deep, clone, copy);
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227 |
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228 | } else if (copy !== undefined) {
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229 | target[name] = copy;
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230 | }
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231 | }
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232 | }
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233 | }
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234 |
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235 | return target;
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236 | };
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237 |
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238 | /* jQuery 1.4.3 */
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239 | $.queue = function (elem, type, data) {
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240 | function $makeArray (arr, results) {
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241 | var ret = results || [];
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242 |
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243 | if (arr != null) {
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244 | if (isArraylike(Object(arr))) {
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245 | /* $.merge */
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246 | (function(first, second) {
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247 | var len = +second.length,
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248 | j = 0,
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249 | i = first.length;
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250 |
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251 | while (j < len) {
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252 | first[i++] = second[j++];
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253 | }
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254 |
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255 | if (len !== len) {
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256 | while (second[j] !== undefined) {
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257 | first[i++] = second[j++];
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258 | }
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259 | }
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260 |
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261 | first.length = i;
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262 |
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263 | return first;
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264 | })(ret, typeof arr === "string" ? [arr] : arr);
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265 | } else {
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266 | [].push.call(ret, arr);
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267 | }
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268 | }
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269 |
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270 | return ret;
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271 | }
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272 |
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273 | if (!elem) {
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274 | return;
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275 | }
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276 |
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277 | type = (type || "fx") + "queue";
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278 |
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279 | var q = $.data(elem, type);
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280 |
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281 | if (!data) {
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282 | return q || [];
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283 | }
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284 |
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285 | if (!q || $.isArray(data)) {
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286 | q = $.data(elem, type, $makeArray(data));
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287 | } else {
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288 | q.push(data);
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289 | }
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290 |
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291 | return q;
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292 | };
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293 |
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294 | /* jQuery 1.4.3 */
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295 | $.dequeue = function (elems, type) {
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296 | /* Custom: Embed element iteration. */
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297 | $.each(elems.nodeType ? [ elems ] : elems, function(i, elem) {
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298 | type = type || "fx";
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299 |
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300 | var queue = $.queue(elem, type),
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301 | fn = queue.shift();
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302 |
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303 | if (fn === "inprogress") {
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304 | fn = queue.shift();
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305 | }
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306 |
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307 | if (fn) {
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308 | if (type === "fx") {
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309 | queue.unshift("inprogress");
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310 | }
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311 |
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312 | fn.call(elem, function() {
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313 | $.dequeue(elem, type);
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314 | });
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315 | }
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316 | });
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317 | };
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318 |
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319 | /******************
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320 | $.fn Methods
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321 | ******************/
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322 |
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323 | /* jQuery */
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324 | $.fn = $.prototype = {
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325 | init: function (selector) {
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326 | /* Just return the element wrapped inside an array; don't proceed with the actual jQuery node wrapping process. */
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327 | if (selector.nodeType) {
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328 | this[0] = selector;
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329 |
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330 | return this;
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331 | } else {
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332 | throw new Error("Not a DOM node.");
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333 | }
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334 | },
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335 |
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336 | offset: function () {
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337 | /* jQuery altered code: Dropped disconnected DOM node checking. */
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338 | var box = this[0].getBoundingClientRect ? this[0].getBoundingClientRect() : { top: 0, left: 0 };
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339 |
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340 | return {
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341 | top: box.top + (window.pageYOffset || document.scrollTop || 0) - (document.clientTop || 0),
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342 | left: box.left + (window.pageXOffset || document.scrollLeft || 0) - (document.clientLeft || 0)
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343 | };
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344 | },
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345 |
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346 | position: function () {
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347 | /* jQuery */
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348 | function offsetParent() {
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349 | var offsetParent = this.offsetParent || document;
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350 |
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351 | while (offsetParent && (!offsetParent.nodeType.toLowerCase === "html" && offsetParent.style.position === "static")) {
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352 | offsetParent = offsetParent.offsetParent;
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353 | }
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354 |
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355 | return offsetParent || document;
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356 | }
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357 |
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358 | /* Zepto */
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359 | var elem = this[0],
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360 | offsetParent = offsetParent.apply(elem),
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361 | offset = this.offset(),
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362 | parentOffset = /^(?:body|html)$/i.test(offsetParent.nodeName) ? { top: 0, left: 0 } : $(offsetParent).offset()
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363 |
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364 | offset.top -= parseFloat(elem.style.marginTop) || 0;
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365 | offset.left -= parseFloat(elem.style.marginLeft) || 0;
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366 |
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367 | if (offsetParent.style) {
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368 | parentOffset.top += parseFloat(offsetParent.style.borderTopWidth) || 0
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369 | parentOffset.left += parseFloat(offsetParent.style.borderLeftWidth) || 0
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370 | }
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371 |
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372 | return {
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373 | top: offset.top - parentOffset.top,
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374 | left: offset.left - parentOffset.left
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375 | };
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376 | }
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377 | };
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378 |
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379 | /**********************
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380 | Private Variables
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381 | **********************/
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382 |
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383 | /* For $.data() */
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384 | var cache = {};
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385 | $.expando = "velocity" + (new Date().getTime());
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386 | $.uuid = 0;
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387 |
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388 | /* For $.queue() */
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389 | var class2type = {},
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390 | hasOwn = class2type.hasOwnProperty,
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391 | toString = class2type.toString;
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392 |
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393 | var types = "Boolean Number String Function Array Date RegExp Object Error".split(" ");
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394 | for (var i = 0; i < types.length; i++) {
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395 | class2type["[object " + types[i] + "]"] = types[i].toLowerCase();
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396 | }
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397 |
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398 | /* Makes $(node) possible, without having to call init. */
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399 | $.fn.init.prototype = $.fn;
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400 |
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401 | /* Globalize Velocity onto the window, and assign its Utilities property. */
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402 | window.Velocity = { Utilities: $ };
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403 | })(window);
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404 |
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405 | /******************
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406 | Velocity.js
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407 | ******************/
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408 |
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409 | ;(function (factory) {
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410 | /* CommonJS module. */
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411 | if (typeof module === "object" && typeof module.exports === "object") {
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412 | module.exports = factory();
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413 | /* AMD module. */
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414 | } else if (typeof define === "function" && define.amd) {
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415 | define(factory);
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416 | /* Browser globals. */
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417 | } else {
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418 | factory();
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419 | }
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420 | }(function() {
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421 | return function (global, window, document, undefined) {
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422 |
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423 | /***************
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424 | Summary
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425 | ***************/
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426 |
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427 | /*
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428 | - CSS: CSS stack that works independently from the rest of Velocity.
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429 | - animate(): Core animation method that iterates over the targeted elements and queues the incoming call onto each element individually.
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430 | - Pre-Queueing: Prepare the element for animation by instantiating its data cache and processing the call's options.
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431 | - Queueing: The logic that runs once the call has reached its point of execution in the element's $.queue() stack.
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432 | Most logic is placed here to avoid risking it becoming stale (if the element's properties have changed).
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433 | - Pushing: Consolidation of the tween data followed by its push onto the global in-progress calls container.
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434 | - tick(): The single requestAnimationFrame loop responsible for tweening all in-progress calls.
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435 | - completeCall(): Handles the cleanup process for each Velocity call.
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436 | */
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437 |
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438 | /*********************
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439 | Helper Functions
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440 | *********************/
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441 |
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442 | /* IE detection. Gist: https://gist.github.com/julianshapiro/9098609 */
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443 | var IE = (function() {
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444 | if (document.documentMode) {
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445 | return document.documentMode;
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446 | } else {
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447 | for (var i = 7; i > 4; i--) {
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448 | var div = document.createElement("div");
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449 |
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450 | div.innerHTML = "<!--[if IE " + i + "]><span></span><![endif]-->";
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451 |
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452 | if (div.getElementsByTagName("span").length) {
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453 | div = null;
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454 |
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455 | return i;
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456 | }
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457 | }
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458 | }
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459 |
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460 | return undefined;
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461 | })();
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462 |
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463 | /* rAF shim. Gist: https://gist.github.com/julianshapiro/9497513 */
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464 | var rAFShim = (function() {
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465 | var timeLast = 0;
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466 |
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467 | return window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || function(callback) {
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468 | var timeCurrent = (new Date()).getTime(),
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469 | timeDelta;
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470 |
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471 | /* Dynamically set delay on a per-tick basis to match 60fps. */
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472 | /* Technique by Erik Moller. MIT license: https://gist.github.com/paulirish/1579671 */
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473 | timeDelta = Math.max(0, 16 - (timeCurrent - timeLast));
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474 | timeLast = timeCurrent + timeDelta;
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475 |
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476 | return setTimeout(function() { callback(timeCurrent + timeDelta); }, timeDelta);
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477 | };
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478 | })();
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479 |
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480 | /* Array compacting. Copyright Lo-Dash. MIT License: https://github.com/lodash/lodash/blob/master/LICENSE.txt */
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481 | function compactSparseArray (array) {
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482 | var index = -1,
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483 | length = array ? array.length : 0,
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484 | result = [];
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485 |
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486 | while (++index < length) {
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487 | var value = array[index];
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488 |
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489 | if (value) {
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490 | result.push(value);
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491 | }
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492 | }
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493 |
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494 | return result;
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495 | }
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496 |
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497 | function sanitizeElements (elements) {
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498 | /* Unwrap jQuery/Zepto objects. */
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499 | if (Type.isWrapped(elements)) {
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500 | elements = [].slice.call(elements);
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501 | /* Wrap a single element in an array so that $.each() can iterate with the element instead of its node's children. */
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502 | } else if (Type.isNode(elements)) {
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503 | elements = [ elements ];
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504 | }
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505 |
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506 | return elements;
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507 | }
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508 |
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509 | var Type = {
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510 | isString: function (variable) {
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511 | return (typeof variable === "string");
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512 | },
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513 | isArray: Array.isArray || function (variable) {
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514 | return Object.prototype.toString.call(variable) === "[object Array]";
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515 | },
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516 | isFunction: function (variable) {
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517 | return Object.prototype.toString.call(variable) === "[object Function]";
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518 | },
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519 | isNode: function (variable) {
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520 | return variable && variable.nodeType;
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521 | },
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522 | /* Copyright Martin Bohm. MIT License: https://gist.github.com/Tomalak/818a78a226a0738eaade */
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523 | isNodeList: function (variable) {
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524 | return typeof variable === "object" &&
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525 | /^\[object (HTMLCollection|NodeList|Object)\]$/.test(Object.prototype.toString.call(variable)) &&
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526 | variable.length !== undefined &&
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527 | (variable.length === 0 || (typeof variable[0] === "object" && variable[0].nodeType > 0));
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528 | },
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529 | /* Determine if variable is a wrapped jQuery or Zepto element. */
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530 | isWrapped: function (variable) {
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531 | return variable && (variable.jquery || (window.Zepto && window.Zepto.zepto.isZ(variable)));
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532 | },
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533 | isSVG: function (variable) {
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534 | return window.SVGElement && (variable instanceof window.SVGElement);
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535 | },
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536 | isEmptyObject: function (variable) {
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537 | for (var name in variable) {
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538 | return false;
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539 | }
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540 |
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541 | return true;
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542 | }
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543 | };
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544 |
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545 | /*****************
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546 | Dependencies
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547 | *****************/
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548 |
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549 | var $,
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550 | isJQuery = false;
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551 |
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552 | if (global.fn && global.fn.jquery) {
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553 | $ = global;
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554 | isJQuery = true;
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555 | } else {
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556 | $ = window.Velocity.Utilities;
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557 | }
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558 |
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559 | if (IE <= 8 && !isJQuery) {
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560 | throw new Error("Velocity: IE8 and below require jQuery to be loaded before Velocity.");
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561 | } else if (IE <= 7) {
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562 | /* Revert to jQuery's $.animate(), and lose Velocity's extra features. */
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563 | jQuery.fn.velocity = jQuery.fn.animate;
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564 |
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565 | /* Now that $.fn.velocity is aliased, abort this Velocity declaration. */
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566 | return;
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567 | }
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568 |
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569 | /*****************
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570 | Constants
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571 | *****************/
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572 |
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573 | var DURATION_DEFAULT = 400,
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574 | EASING_DEFAULT = "swing";
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575 |
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576 | /*************
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577 | State
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578 | *************/
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579 |
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580 | /* Note: The global object also doubles as a publicly-accessible data store for the purposes of unit testing. */
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581 | /* Note: Alias the lowercase and uppercase variants of "velocity" to minimize user confusion due to the lowercase nature of the $.fn extension. */
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582 | var Velocity = {
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583 | /* Container for page-wide Velocity state data. */
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584 | State: {
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585 | /* Detect mobile devices to determine if mobileHA should be turned on. */
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586 | isMobile: /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent),
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587 | /* The mobileHA option's behavior changes on older Android devices (Gingerbread, versions 2.3.3-2.3.7). */
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588 | isAndroid: /Android/i.test(navigator.userAgent),
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589 | isGingerbread: /Android 2\.3\.[3-7]/i.test(navigator.userAgent),
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590 | isChrome: window.chrome,
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591 | isFirefox: /Firefox/i.test(navigator.userAgent),
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592 | /* Create a cached element for re-use when checking for CSS property prefixes. */
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593 | prefixElement: document.createElement("div"),
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594 | /* Cache every prefix match to avoid repeating lookups. */
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595 | prefixMatches: {},
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596 | /* Cache the anchor used for animating window scrolling. */
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597 | scrollAnchor: null,
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598 | /* Cache the property names associated with the scroll anchor. */
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599 | scrollPropertyLeft: null,
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600 | scrollPropertyTop: null,
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601 | /* Keep track of whether our RAF tick is running. */
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602 | isTicking: false,
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603 | /* Container for every in-progress call to Velocity. */
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604 | calls: []
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605 | },
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606 | /* Velocity's custom CSS stack. Made global for unit testing. */
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607 | CSS: { /* Defined below. */ },
|
608 | /* Defined by Velocity's optional jQuery shim. */
|
609 | Utilities: $,
|
610 | /* Container for the user's custom animation redirects that are referenced by name in place of a properties map object. */
|
611 | Redirects: { /* Manually registered by the user. */ },
|
612 | Easings: { /* Defined below. */ },
|
613 | /* Attempt to use ES6 Promises by default. Users can override this with a third-party promises library. */
|
614 | Promise: window.Promise,
|
615 | /* Page-wide option defaults, which can be overriden by the user. */
|
616 | defaults: {
|
617 | queue: "",
|
618 | duration: DURATION_DEFAULT,
|
619 | easing: EASING_DEFAULT,
|
620 | begin: undefined,
|
621 | complete: undefined,
|
622 | progress: undefined,
|
623 | display: undefined,
|
624 | visibility: undefined,
|
625 | loop: false,
|
626 | delay: false,
|
627 | mobileHA: true,
|
628 | /* Set to false to prevent property values from being cached between consecutive Velocity-initiated chain calls. */
|
629 | _cacheValues: true
|
630 | },
|
631 | /* A design goal of Velocity is to cache data wherever possible in order to avoid DOM requerying.
|
632 | Accordingly, each element has a data cache instantiated on it. */
|
633 | init: function (element) {
|
634 | $.data(element, "velocity", {
|
635 | /* Store whether this is an SVG element, since its properties are retrieved and updated differently than standard HTML elements. */
|
636 | isSVG: Type.isSVG(element),
|
637 | /* Keep track of whether the element is currently being animated by Velocity.
|
638 | This is used to ensure that property values are not transferred between non-consecutive (stale) calls. */
|
639 | isAnimating: false,
|
640 | /* A reference to the element's live computedStyle object. Learn more here: https://developer.mozilla.org/en/docs/Web/API/window.getComputedStyle */
|
641 | computedStyle: null,
|
642 | /* Tween data is cached for each animation on the element so that data can be passed across calls --
|
643 | in particular, end values are used as subsequent start values in consecutive Velocity calls. */
|
644 | tweensContainer: null,
|
645 | /* The full root property values of each CSS hook being animated on this element are cached so that:
|
646 | 1) Concurrently-animating hooks sharing the same root can have their root values' merged into one while tweening.
|
647 | 2) Post-hook-injection root values can be transferred over to consecutively chained Velocity calls as starting root values. */
|
648 | rootPropertyValueCache: {},
|
649 | /* A cache for transform updates, which must be manually flushed via CSS.flushTransformCache(). */
|
650 | transformCache: {}
|
651 | });
|
652 | },
|
653 | /* A parallel to jQuery's $.css(), used for getting/setting Velocity's hooked CSS properties. */
|
654 | hook: null, /* Defined below. */
|
655 | /* Velocity-wide animation time remapping for testing purposes. */
|
656 | mock: false,
|
657 | version: { major: 1, minor: 1, patch: 0 },
|
658 | /* Set to 1 or 2 (most verbose) to output debug info to console. */
|
659 | debug: false
|
660 | };
|
661 |
|
662 | /* Retrieve the appropriate scroll anchor and property name for the browser: https://developer.mozilla.org/en-US/docs/Web/API/Window.scrollY */
|
663 | if (window.pageYOffset !== undefined) {
|
664 | Velocity.State.scrollAnchor = window;
|
665 | Velocity.State.scrollPropertyLeft = "pageXOffset";
|
666 | Velocity.State.scrollPropertyTop = "pageYOffset";
|
667 | } else {
|
668 | Velocity.State.scrollAnchor = document.documentElement || document.body.parentNode || document.body;
|
669 | Velocity.State.scrollPropertyLeft = "scrollLeft";
|
670 | Velocity.State.scrollPropertyTop = "scrollTop";
|
671 | }
|
672 |
|
673 | /* Shorthand alias for jQuery's $.data() utility. */
|
674 | function Data (element) {
|
675 | /* Hardcode a reference to the plugin name. */
|
676 | var response = $.data(element, "velocity");
|
677 |
|
678 | /* jQuery <=1.4.2 returns null instead of undefined when no match is found. We normalize this behavior. */
|
679 | return response === null ? undefined : response;
|
680 | };
|
681 |
|
682 | /**************
|
683 | Easing
|
684 | **************/
|
685 |
|
686 | /* Step easing generator. */
|
687 | function generateStep (steps) {
|
688 | return function (p) {
|
689 | return Math.round(p * steps) * (1 / steps);
|
690 | };
|
691 | }
|
692 |
|
693 | /* Bezier curve function generator. Copyright Gaetan Renaudeau. MIT License: http://en.wikipedia.org/wiki/MIT_License */
|
694 | function generateBezier (mX1, mY1, mX2, mY2) {
|
695 | var NEWTON_ITERATIONS = 4,
|
696 | NEWTON_MIN_SLOPE = 0.001,
|
697 | SUBDIVISION_PRECISION = 0.0000001,
|
698 | SUBDIVISION_MAX_ITERATIONS = 10,
|
699 | kSplineTableSize = 11,
|
700 | kSampleStepSize = 1.0 / (kSplineTableSize - 1.0),
|
701 | float32ArraySupported = "Float32Array" in window;
|
702 |
|
703 | /* Must contain four arguments. */
|
704 | if (arguments.length !== 4) {
|
705 | return false;
|
706 | }
|
707 |
|
708 | /* Arguments must be numbers. */
|
709 | for (var i = 0; i < 4; ++i) {
|
710 | if (typeof arguments[i] !== "number" || isNaN(arguments[i]) || !isFinite(arguments[i])) {
|
711 | return false;
|
712 | }
|
713 | }
|
714 |
|
715 | /* X values must be in the [0, 1] range. */
|
716 | mX1 = Math.min(mX1, 1);
|
717 | mX2 = Math.min(mX2, 1);
|
718 | mX1 = Math.max(mX1, 0);
|
719 | mX2 = Math.max(mX2, 0);
|
720 |
|
721 | var mSampleValues = float32ArraySupported ? new Float32Array(kSplineTableSize) : new Array(kSplineTableSize);
|
722 |
|
723 | function A (aA1, aA2) { return 1.0 - 3.0 * aA2 + 3.0 * aA1; }
|
724 | function B (aA1, aA2) { return 3.0 * aA2 - 6.0 * aA1; }
|
725 | function C (aA1) { return 3.0 * aA1; }
|
726 |
|
727 | function calcBezier (aT, aA1, aA2) {
|
728 | return ((A(aA1, aA2)*aT + B(aA1, aA2))*aT + C(aA1))*aT;
|
729 | }
|
730 |
|
731 | function getSlope (aT, aA1, aA2) {
|
732 | return 3.0 * A(aA1, aA2)*aT*aT + 2.0 * B(aA1, aA2) * aT + C(aA1);
|
733 | }
|
734 |
|
735 | function newtonRaphsonIterate (aX, aGuessT) {
|
736 | for (var i = 0; i < NEWTON_ITERATIONS; ++i) {
|
737 | var currentSlope = getSlope(aGuessT, mX1, mX2);
|
738 |
|
739 | if (currentSlope === 0.0) return aGuessT;
|
740 |
|
741 | var currentX = calcBezier(aGuessT, mX1, mX2) - aX;
|
742 | aGuessT -= currentX / currentSlope;
|
743 | }
|
744 |
|
745 | return aGuessT;
|
746 | }
|
747 |
|
748 | function calcSampleValues () {
|
749 | for (var i = 0; i < kSplineTableSize; ++i) {
|
750 | mSampleValues[i] = calcBezier(i * kSampleStepSize, mX1, mX2);
|
751 | }
|
752 | }
|
753 |
|
754 | function binarySubdivide (aX, aA, aB) {
|
755 | var currentX, currentT, i = 0;
|
756 |
|
757 | do {
|
758 | currentT = aA + (aB - aA) / 2.0;
|
759 | currentX = calcBezier(currentT, mX1, mX2) - aX;
|
760 | if (currentX > 0.0) {
|
761 | aB = currentT;
|
762 | } else {
|
763 | aA = currentT;
|
764 | }
|
765 | } while (Math.abs(currentX) > SUBDIVISION_PRECISION && ++i < SUBDIVISION_MAX_ITERATIONS);
|
766 |
|
767 | return currentT;
|
768 | }
|
769 |
|
770 | function getTForX (aX) {
|
771 | var intervalStart = 0.0,
|
772 | currentSample = 1,
|
773 | lastSample = kSplineTableSize - 1;
|
774 |
|
775 | for (; currentSample != lastSample && mSampleValues[currentSample] <= aX; ++currentSample) {
|
776 | intervalStart += kSampleStepSize;
|
777 | }
|
778 |
|
779 | --currentSample;
|
780 |
|
781 | var dist = (aX - mSampleValues[currentSample]) / (mSampleValues[currentSample+1] - mSampleValues[currentSample]),
|
782 | guessForT = intervalStart + dist * kSampleStepSize,
|
783 | initialSlope = getSlope(guessForT, mX1, mX2);
|
784 |
|
785 | if (initialSlope >= NEWTON_MIN_SLOPE) {
|
786 | return newtonRaphsonIterate(aX, guessForT);
|
787 | } else if (initialSlope == 0.0) {
|
788 | return guessForT;
|
789 | } else {
|
790 | return binarySubdivide(aX, intervalStart, intervalStart + kSampleStepSize);
|
791 | }
|
792 | }
|
793 |
|
794 | var _precomputed = false;
|
795 |
|
796 | function precompute() {
|
797 | _precomputed = true;
|
798 | if (mX1 != mY1 || mX2 != mY2) calcSampleValues();
|
799 | }
|
800 |
|
801 | var f = function (aX) {
|
802 | if (!_precomputed) precompute();
|
803 | if (mX1 === mY1 && mX2 === mY2) return aX;
|
804 | if (aX === 0) return 0;
|
805 | if (aX === 1) return 1;
|
806 |
|
807 | return calcBezier(getTForX(aX), mY1, mY2);
|
808 | };
|
809 |
|
810 | f.getControlPoints = function() { return [{ x: mX1, y: mY1 }, { x: mX2, y: mY2 }]; };
|
811 |
|
812 | var str = "generateBezier(" + [mX1, mY1, mX2, mY2] + ")";
|
813 | f.toString = function () { return str; };
|
814 |
|
815 | return f;
|
816 | }
|
817 |
|
818 | /* Runge-Kutta spring physics function generator. Adapted from Framer.js, copyright Koen Bok. MIT License: http://en.wikipedia.org/wiki/MIT_License */
|
819 | /* Given a tension, friction, and duration, a simulation at 60FPS will first run without a defined duration in order to calculate the full path. A second pass
|
820 | then adjusts the time delta -- using the relation between actual time and duration -- to calculate the path for the duration-constrained animation. */
|
821 | var generateSpringRK4 = (function () {
|
822 | function springAccelerationForState (state) {
|
823 | return (-state.tension * state.x) - (state.friction * state.v);
|
824 | }
|
825 |
|
826 | function springEvaluateStateWithDerivative (initialState, dt, derivative) {
|
827 | var state = {
|
828 | x: initialState.x + derivative.dx * dt,
|
829 | v: initialState.v + derivative.dv * dt,
|
830 | tension: initialState.tension,
|
831 | friction: initialState.friction
|
832 | };
|
833 |
|
834 | return { dx: state.v, dv: springAccelerationForState(state) };
|
835 | }
|
836 |
|
837 | function springIntegrateState (state, dt) {
|
838 | var a = {
|
839 | dx: state.v,
|
840 | dv: springAccelerationForState(state)
|
841 | },
|
842 | b = springEvaluateStateWithDerivative(state, dt * 0.5, a),
|
843 | c = springEvaluateStateWithDerivative(state, dt * 0.5, b),
|
844 | d = springEvaluateStateWithDerivative(state, dt, c),
|
845 | dxdt = 1.0 / 6.0 * (a.dx + 2.0 * (b.dx + c.dx) + d.dx),
|
846 | dvdt = 1.0 / 6.0 * (a.dv + 2.0 * (b.dv + c.dv) + d.dv);
|
847 |
|
848 | state.x = state.x + dxdt * dt;
|
849 | state.v = state.v + dvdt * dt;
|
850 |
|
851 | return state;
|
852 | }
|
853 |
|
854 | return function springRK4Factory (tension, friction, duration) {
|
855 |
|
856 | var initState = {
|
857 | x: -1,
|
858 | v: 0,
|
859 | tension: null,
|
860 | friction: null
|
861 | },
|
862 | path = [0],
|
863 | time_lapsed = 0,
|
864 | tolerance = 1 / 10000,
|
865 | DT = 16 / 1000,
|
866 | have_duration, dt, last_state;
|
867 |
|
868 | tension = parseFloat(tension) || 500;
|
869 | friction = parseFloat(friction) || 20;
|
870 | duration = duration || null;
|
871 |
|
872 | initState.tension = tension;
|
873 | initState.friction = friction;
|
874 |
|
875 | have_duration = duration !== null;
|
876 |
|
877 | /* Calculate the actual time it takes for this animation to complete with the provided conditions. */
|
878 | if (have_duration) {
|
879 | /* Run the simulation without a duration. */
|
880 | time_lapsed = springRK4Factory(tension, friction);
|
881 | /* Compute the adjusted time delta. */
|
882 | dt = time_lapsed / duration * DT;
|
883 | } else {
|
884 | dt = DT;
|
885 | }
|
886 |
|
887 | while (true) {
|
888 | /* Next/step function .*/
|
889 | last_state = springIntegrateState(last_state || initState, dt);
|
890 | /* Store the position. */
|
891 | path.push(1 + last_state.x);
|
892 | time_lapsed += 16;
|
893 | /* If the change threshold is reached, break. */
|
894 | if (!(Math.abs(last_state.x) > tolerance && Math.abs(last_state.v) > tolerance)) {
|
895 | break;
|
896 | }
|
897 | }
|
898 |
|
899 | /* If duration is not defined, return the actual time required for completing this animation. Otherwise, return a closure that holds the
|
900 | computed path and returns a snapshot of the position according to a given percentComplete. */
|
901 | return !have_duration ? time_lapsed : function(percentComplete) { return path[ (percentComplete * (path.length - 1)) | 0 ]; };
|
902 | };
|
903 | }());
|
904 |
|
905 | /* jQuery easings. */
|
906 | Velocity.Easings = {
|
907 | linear: function(p) { return p; },
|
908 | swing: function(p) { return 0.5 - Math.cos( p * Math.PI ) / 2 },
|
909 | /* Bonus "spring" easing, which is a less exaggerated version of easeInOutElastic. */
|
910 | spring: function(p) { return 1 - (Math.cos(p * 4.5 * Math.PI) * Math.exp(-p * 6)); }
|
911 | };
|
912 |
|
913 | /* CSS3 and Robert Penner easings. */
|
914 | $.each(
|
915 | [
|
916 | [ "ease", [ 0.25, 0.1, 0.25, 1.0 ] ],
|
917 | [ "ease-in", [ 0.42, 0.0, 1.00, 1.0 ] ],
|
918 | [ "ease-out", [ 0.00, 0.0, 0.58, 1.0 ] ],
|
919 | [ "ease-in-out", [ 0.42, 0.0, 0.58, 1.0 ] ],
|
920 | [ "easeInSine", [ 0.47, 0, 0.745, 0.715 ] ],
|
921 | [ "easeOutSine", [ 0.39, 0.575, 0.565, 1 ] ],
|
922 | [ "easeInOutSine", [ 0.445, 0.05, 0.55, 0.95 ] ],
|
923 | [ "easeInQuad", [ 0.55, 0.085, 0.68, 0.53 ] ],
|
924 | [ "easeOutQuad", [ 0.25, 0.46, 0.45, 0.94 ] ],
|
925 | [ "easeInOutQuad", [ 0.455, 0.03, 0.515, 0.955 ] ],
|
926 | [ "easeInCubic", [ 0.55, 0.055, 0.675, 0.19 ] ],
|
927 | [ "easeOutCubic", [ 0.215, 0.61, 0.355, 1 ] ],
|
928 | [ "easeInOutCubic", [ 0.645, 0.045, 0.355, 1 ] ],
|
929 | [ "easeInQuart", [ 0.895, 0.03, 0.685, 0.22 ] ],
|
930 | [ "easeOutQuart", [ 0.165, 0.84, 0.44, 1 ] ],
|
931 | [ "easeInOutQuart", [ 0.77, 0, 0.175, 1 ] ],
|
932 | [ "easeInQuint", [ 0.755, 0.05, 0.855, 0.06 ] ],
|
933 | [ "easeOutQuint", [ 0.23, 1, 0.32, 1 ] ],
|
934 | [ "easeInOutQuint", [ 0.86, 0, 0.07, 1 ] ],
|
935 | [ "easeInExpo", [ 0.95, 0.05, 0.795, 0.035 ] ],
|
936 | [ "easeOutExpo", [ 0.19, 1, 0.22, 1 ] ],
|
937 | [ "easeInOutExpo", [ 1, 0, 0, 1 ] ],
|
938 | [ "easeInCirc", [ 0.6, 0.04, 0.98, 0.335 ] ],
|
939 | [ "easeOutCirc", [ 0.075, 0.82, 0.165, 1 ] ],
|
940 | [ "easeInOutCirc", [ 0.785, 0.135, 0.15, 0.86 ] ]
|
941 | ], function(i, easingArray) {
|
942 | Velocity.Easings[easingArray[0]] = generateBezier.apply(null, easingArray[1]);
|
943 | });
|
944 |
|
945 | /* Determine the appropriate easing type given an easing input. */
|
946 | function getEasing(value, duration) {
|
947 | var easing = value;
|
948 |
|
949 | /* The easing option can either be a string that references a pre-registered easing,
|
950 | or it can be a two-/four-item array of integers to be converted into a bezier/spring function. */
|
951 | if (Type.isString(value)) {
|
952 | /* Ensure that the easing has been assigned to jQuery's Velocity.Easings object. */
|
953 | if (!Velocity.Easings[value]) {
|
954 | easing = false;
|
955 | }
|
956 | } else if (Type.isArray(value) && value.length === 1) {
|
957 | easing = generateStep.apply(null, value);
|
958 | } else if (Type.isArray(value) && value.length === 2) {
|
959 | /* springRK4 must be passed the animation's duration. */
|
960 | /* Note: If the springRK4 array contains non-numbers, generateSpringRK4() returns an easing
|
961 | function generated with default tension and friction values. */
|
962 | easing = generateSpringRK4.apply(null, value.concat([ duration ]));
|
963 | } else if (Type.isArray(value) && value.length === 4) {
|
964 | /* Note: If the bezier array contains non-numbers, generateBezier() returns false. */
|
965 | easing = generateBezier.apply(null, value);
|
966 | } else {
|
967 | easing = false;
|
968 | }
|
969 |
|
970 | /* Revert to the Velocity-wide default easing type, or fall back to "swing" (which is also jQuery's default)
|
971 | if the Velocity-wide default has been incorrectly modified. */
|
972 | if (easing === false) {
|
973 | if (Velocity.Easings[Velocity.defaults.easing]) {
|
974 | easing = Velocity.defaults.easing;
|
975 | } else {
|
976 | easing = EASING_DEFAULT;
|
977 | }
|
978 | }
|
979 |
|
980 | return easing;
|
981 | }
|
982 |
|
983 | /*****************
|
984 | CSS Stack
|
985 | *****************/
|
986 |
|
987 | /* The CSS object is a highly condensed and performant CSS stack that fully replaces jQuery's.
|
988 | It handles the validation, getting, and setting of both standard CSS properties and CSS property hooks. */
|
989 | /* Note: A "CSS" shorthand is aliased so that our code is easier to read. */
|
990 | var CSS = Velocity.CSS = {
|
991 |
|
992 | /*************
|
993 | RegEx
|
994 | *************/
|
995 |
|
996 | RegEx: {
|
997 | isHex: /^#([A-f\d]{3}){1,2}$/i,
|
998 | /* Unwrap a property value's surrounding text, e.g. "rgba(4, 3, 2, 1)" ==> "4, 3, 2, 1" and "rect(4px 3px 2px 1px)" ==> "4px 3px 2px 1px". */
|
999 | valueUnwrap: /^[A-z]+\((.*)\)$/i,
|
1000 | wrappedValueAlreadyExtracted: /[0-9.]+ [0-9.]+ [0-9.]+( [0-9.]+)?/,
|
1001 | /* Split a multi-value property into an array of subvalues, e.g. "rgba(4, 3, 2, 1) 4px 3px 2px 1px" ==> [ "rgba(4, 3, 2, 1)", "4px", "3px", "2px", "1px" ]. */
|
1002 | valueSplit: /([A-z]+\(.+\))|(([A-z0-9#-.]+?)(?=\s|$))/ig
|
1003 | },
|
1004 |
|
1005 | /************
|
1006 | Lists
|
1007 | ************/
|
1008 |
|
1009 | Lists: {
|
1010 | colors: [ "fill", "stroke", "stopColor", "color", "backgroundColor", "borderColor", "borderTopColor", "borderRightColor", "borderBottomColor", "borderLeftColor", "outlineColor" ],
|
1011 | transformsBase: [ "translateX", "translateY", "scale", "scaleX", "scaleY", "skewX", "skewY", "rotateZ" ],
|
1012 | transforms3D: [ "transformPerspective", "translateZ", "scaleZ", "rotateX", "rotateY" ]
|
1013 | },
|
1014 |
|
1015 | /************
|
1016 | Hooks
|
1017 | ************/
|
1018 |
|
1019 | /* Hooks allow a subproperty (e.g. "boxShadowBlur") of a compound-value CSS property
|
1020 | (e.g. "boxShadow: X Y Blur Spread Color") to be animated as if it were a discrete property. */
|
1021 | /* Note: Beyond enabling fine-grained property animation, hooking is necessary since Velocity only
|
1022 | tweens properties with single numeric values; unlike CSS transitions, Velocity does not interpolate compound-values. */
|
1023 | Hooks: {
|
1024 | /********************
|
1025 | Registration
|
1026 | ********************/
|
1027 |
|
1028 | /* Templates are a concise way of indicating which subproperties must be individually registered for each compound-value CSS property. */
|
1029 | /* Each template consists of the compound-value's base name, its constituent subproperty names, and those subproperties' default values. */
|
1030 | templates: {
|
1031 | "textShadow": [ "Color X Y Blur", "black 0px 0px 0px" ],
|
1032 | /* Todo: Add support for inset boxShadows. (webkit places it last whereas IE places it first.) */
|
1033 | "boxShadow": [ "Color X Y Blur Spread", "black 0px 0px 0px 0px" ],
|
1034 | "clip": [ "Top Right Bottom Left", "0px 0px 0px 0px" ],
|
1035 | "backgroundPosition": [ "X Y", "0% 0%" ],
|
1036 | "transformOrigin": [ "X Y Z", "50% 50% 0px" ],
|
1037 | "perspectiveOrigin": [ "X Y", "50% 50%" ]
|
1038 | },
|
1039 |
|
1040 | /* A "registered" hook is one that has been converted from its template form into a live,
|
1041 | tweenable property. It contains data to associate it with its root property. */
|
1042 | registered: {
|
1043 | /* Note: A registered hook looks like this ==> textShadowBlur: [ "textShadow", 3 ],
|
1044 | which consists of the subproperty's name, the associated root property's name,
|
1045 | and the subproperty's position in the root's value. */
|
1046 | },
|
1047 | /* Convert the templates into individual hooks then append them to the registered object above. */
|
1048 | register: function () {
|
1049 | /* Color hooks registration: Colors are defaulted to white -- as opposed to black -- since colors that are
|
1050 | currently set to "transparent" default to their respective template below when color-animated,
|
1051 | and white is typically a closer match to transparent than black is. An exception is made for text ("color"),
|
1052 | which is almost always set closer to black than white. */
|
1053 | for (var i = 0; i < CSS.Lists.colors.length; i++) {
|
1054 | var rgbComponents = (CSS.Lists.colors[i] === "color") ? "0 0 0 1" : "255 255 255 1";
|
1055 | CSS.Hooks.templates[CSS.Lists.colors[i]] = [ "Red Green Blue Alpha", rgbComponents ];
|
1056 | }
|
1057 |
|
1058 | var rootProperty,
|
1059 | hookTemplate,
|
1060 | hookNames;
|
1061 |
|
1062 | /* In IE, color values inside compound-value properties are positioned at the end the value instead of at the beginning.
|
1063 | Thus, we re-arrange the templates accordingly. */
|
1064 | if (IE) {
|
1065 | for (rootProperty in CSS.Hooks.templates) {
|
1066 | hookTemplate = CSS.Hooks.templates[rootProperty];
|
1067 | hookNames = hookTemplate[0].split(" ");
|
1068 |
|
1069 | var defaultValues = hookTemplate[1].match(CSS.RegEx.valueSplit);
|
1070 |
|
1071 | if (hookNames[0] === "Color") {
|
1072 | /* Reposition both the hook's name and its default value to the end of their respective strings. */
|
1073 | hookNames.push(hookNames.shift());
|
1074 | defaultValues.push(defaultValues.shift());
|
1075 |
|
1076 | /* Replace the existing template for the hook's root property. */
|
1077 | CSS.Hooks.templates[rootProperty] = [ hookNames.join(" "), defaultValues.join(" ") ];
|
1078 | }
|
1079 | }
|
1080 | }
|
1081 |
|
1082 | /* Hook registration. */
|
1083 | for (rootProperty in CSS.Hooks.templates) {
|
1084 | hookTemplate = CSS.Hooks.templates[rootProperty];
|
1085 | hookNames = hookTemplate[0].split(" ");
|
1086 |
|
1087 | for (var i in hookNames) {
|
1088 | var fullHookName = rootProperty + hookNames[i],
|
1089 | hookPosition = i;
|
1090 |
|
1091 | /* For each hook, register its full name (e.g. textShadowBlur) with its root property (e.g. textShadow)
|
1092 | and the hook's position in its template's default value string. */
|
1093 | CSS.Hooks.registered[fullHookName] = [ rootProperty, hookPosition ];
|
1094 | }
|
1095 | }
|
1096 | },
|
1097 |
|
1098 | /*****************************
|
1099 | Injection and Extraction
|
1100 | *****************************/
|
1101 |
|
1102 | /* Look up the root property associated with the hook (e.g. return "textShadow" for "textShadowBlur"). */
|
1103 | /* Since a hook cannot be set directly (the browser won't recognize it), style updating for hooks is routed through the hook's root property. */
|
1104 | getRoot: function (property) {
|
1105 | var hookData = CSS.Hooks.registered[property];
|
1106 |
|
1107 | if (hookData) {
|
1108 | return hookData[0];
|
1109 | } else {
|
1110 | /* If there was no hook match, return the property name untouched. */
|
1111 | return property;
|
1112 | }
|
1113 | },
|
1114 | /* Convert any rootPropertyValue, null or otherwise, into a space-delimited list of hook values so that
|
1115 | the targeted hook can be injected or extracted at its standard position. */
|
1116 | cleanRootPropertyValue: function(rootProperty, rootPropertyValue) {
|
1117 | /* If the rootPropertyValue is wrapped with "rgb()", "clip()", etc., remove the wrapping to normalize the value before manipulation. */
|
1118 | if (CSS.RegEx.valueUnwrap.test(rootPropertyValue)) {
|
1119 | rootPropertyValue = rootPropertyValue.match(CSS.RegEx.valueUnwrap)[1];
|
1120 | }
|
1121 |
|
1122 | /* If rootPropertyValue is a CSS null-value (from which there's inherently no hook value to extract),
|
1123 | default to the root's default value as defined in CSS.Hooks.templates. */
|
1124 | /* Note: CSS null-values include "none", "auto", and "transparent". They must be converted into their
|
1125 | zero-values (e.g. textShadow: "none" ==> textShadow: "0px 0px 0px black") for hook manipulation to proceed. */
|
1126 | if (CSS.Values.isCSSNullValue(rootPropertyValue)) {
|
1127 | rootPropertyValue = CSS.Hooks.templates[rootProperty][1];
|
1128 | }
|
1129 |
|
1130 | return rootPropertyValue;
|
1131 | },
|
1132 | /* Extracted the hook's value from its root property's value. This is used to get the starting value of an animating hook. */
|
1133 | extractValue: function (fullHookName, rootPropertyValue) {
|
1134 | var hookData = CSS.Hooks.registered[fullHookName];
|
1135 |
|
1136 | if (hookData) {
|
1137 | var hookRoot = hookData[0],
|
1138 | hookPosition = hookData[1];
|
1139 |
|
1140 | rootPropertyValue = CSS.Hooks.cleanRootPropertyValue(hookRoot, rootPropertyValue);
|
1141 |
|
1142 | /* Split rootPropertyValue into its constituent hook values then grab the desired hook at its standard position. */
|
1143 | return rootPropertyValue.toString().match(CSS.RegEx.valueSplit)[hookPosition];
|
1144 | } else {
|
1145 | /* If the provided fullHookName isn't a registered hook, return the rootPropertyValue that was passed in. */
|
1146 | return rootPropertyValue;
|
1147 | }
|
1148 | },
|
1149 | /* Inject the hook's value into its root property's value. This is used to piece back together the root property
|
1150 | once Velocity has updated one of its individually hooked values through tweening. */
|
1151 | injectValue: function (fullHookName, hookValue, rootPropertyValue) {
|
1152 | var hookData = CSS.Hooks.registered[fullHookName];
|
1153 |
|
1154 | if (hookData) {
|
1155 | var hookRoot = hookData[0],
|
1156 | hookPosition = hookData[1],
|
1157 | rootPropertyValueParts,
|
1158 | rootPropertyValueUpdated;
|
1159 |
|
1160 | rootPropertyValue = CSS.Hooks.cleanRootPropertyValue(hookRoot, rootPropertyValue);
|
1161 |
|
1162 | /* Split rootPropertyValue into its individual hook values, replace the targeted value with hookValue,
|
1163 | then reconstruct the rootPropertyValue string. */
|
1164 | rootPropertyValueParts = rootPropertyValue.toString().match(CSS.RegEx.valueSplit);
|
1165 | rootPropertyValueParts[hookPosition] = hookValue;
|
1166 | rootPropertyValueUpdated = rootPropertyValueParts.join(" ");
|
1167 |
|
1168 | return rootPropertyValueUpdated;
|
1169 | } else {
|
1170 | /* If the provided fullHookName isn't a registered hook, return the rootPropertyValue that was passed in. */
|
1171 | return rootPropertyValue;
|
1172 | }
|
1173 | }
|
1174 | },
|
1175 |
|
1176 | /*******************
|
1177 | Normalizations
|
1178 | *******************/
|
1179 |
|
1180 | /* Normalizations standardize CSS property manipulation by pollyfilling browser-specific implementations (e.g. opacity)
|
1181 | and reformatting special properties (e.g. clip, rgba) to look like standard ones. */
|
1182 | Normalizations: {
|
1183 | /* Normalizations are passed a normalization target (either the property's name, its extracted value, or its injected value),
|
1184 | the targeted element (which may need to be queried), and the targeted property value. */
|
1185 | registered: {
|
1186 | clip: function (type, element, propertyValue) {
|
1187 | switch (type) {
|
1188 | case "name":
|
1189 | return "clip";
|
1190 | /* Clip needs to be unwrapped and stripped of its commas during extraction. */
|
1191 | case "extract":
|
1192 | var extracted;
|
1193 |
|
1194 | /* If Velocity also extracted this value, skip extraction. */
|
1195 | if (CSS.RegEx.wrappedValueAlreadyExtracted.test(propertyValue)) {
|
1196 | extracted = propertyValue;
|
1197 | } else {
|
1198 | /* Remove the "rect()" wrapper. */
|
1199 | extracted = propertyValue.toString().match(CSS.RegEx.valueUnwrap);
|
1200 |
|
1201 | /* Strip off commas. */
|
1202 | extracted = extracted ? extracted[1].replace(/,(\s+)?/g, " ") : propertyValue;
|
1203 | }
|
1204 |
|
1205 | return extracted;
|
1206 | /* Clip needs to be re-wrapped during injection. */
|
1207 | case "inject":
|
1208 | return "rect(" + propertyValue + ")";
|
1209 | }
|
1210 | },
|
1211 |
|
1212 | blur: function(type, element, propertyValue) {
|
1213 | switch (type) {
|
1214 | case "name":
|
1215 | return "-webkit-filter";
|
1216 | case "extract":
|
1217 | var extracted = parseFloat(propertyValue);
|
1218 |
|
1219 | /* If extracted is NaN, meaning the value isn't already extracted. */
|
1220 | if (!(extracted || extracted === 0)) {
|
1221 | var blurComponent = propertyValue.toString().match(/blur\(([0-9]+[A-z]+)\)/i);
|
1222 |
|
1223 | /* If the filter string had a blur component, return just the blur value and unit type. */
|
1224 | if (blurComponent) {
|
1225 | extracted = blurComponent[1];
|
1226 | /* If the component doesn't exist, default blur to 0. */
|
1227 | } else {
|
1228 | extracted = 0;
|
1229 | }
|
1230 | }
|
1231 |
|
1232 | return extracted;
|
1233 | /* Blur needs to be re-wrapped during injection. */
|
1234 | case "inject":
|
1235 | /* For the blur effect to be fully de-applied, it needs to be set to "none" instead of 0. */
|
1236 | if (!parseFloat(propertyValue)) {
|
1237 | return "none";
|
1238 | } else {
|
1239 | return "blur(" + propertyValue + ")";
|
1240 | }
|
1241 | }
|
1242 | },
|
1243 |
|
1244 | /* <=IE8 do not support the standard opacity property. They use filter:alpha(opacity=INT) instead. */
|
1245 | opacity: function (type, element, propertyValue) {
|
1246 | if (IE <= 8) {
|
1247 | switch (type) {
|
1248 | case "name":
|
1249 | return "filter";
|
1250 | case "extract":
|
1251 | /* <=IE8 return a "filter" value of "alpha(opacity=\d{1,3})".
|
1252 | Extract the value and convert it to a decimal value to match the standard CSS opacity property's formatting. */
|
1253 | var extracted = propertyValue.toString().match(/alpha\(opacity=(.*)\)/i);
|
1254 |
|
1255 | if (extracted) {
|
1256 | /* Convert to decimal value. */
|
1257 | propertyValue = extracted[1] / 100;
|
1258 | } else {
|
1259 | /* When extracting opacity, default to 1 since a null value means opacity hasn't been set. */
|
1260 | propertyValue = 1;
|
1261 | }
|
1262 |
|
1263 | return propertyValue;
|
1264 | case "inject":
|
1265 | /* Opacified elements are required to have their zoom property set to a non-zero value. */
|
1266 | element.style.zoom = 1;
|
1267 |
|
1268 | /* Setting the filter property on elements with certain font property combinations can result in a
|
1269 | highly unappealing ultra-bolding effect. There's no way to remedy this throughout a tween, but dropping the
|
1270 | value altogether (when opacity hits 1) at leasts ensures that the glitch is gone post-tweening. */
|
1271 | if (parseFloat(propertyValue) >= 1) {
|
1272 | return "";
|
1273 | } else {
|
1274 | /* As per the filter property's spec, convert the decimal value to a whole number and wrap the value. */
|
1275 | return "alpha(opacity=" + parseInt(parseFloat(propertyValue) * 100, 10) + ")";
|
1276 | }
|
1277 | }
|
1278 | /* With all other browsers, normalization is not required; return the same values that were passed in. */
|
1279 | } else {
|
1280 | switch (type) {
|
1281 | case "name":
|
1282 | return "opacity";
|
1283 | case "extract":
|
1284 | return propertyValue;
|
1285 | case "inject":
|
1286 | return propertyValue;
|
1287 | }
|
1288 | }
|
1289 | }
|
1290 | },
|
1291 |
|
1292 | /*****************************
|
1293 | Batched Registrations
|
1294 | *****************************/
|
1295 |
|
1296 | /* Note: Batched normalizations extend the CSS.Normalizations.registered object. */
|
1297 | register: function () {
|
1298 |
|
1299 | /*****************
|
1300 | Transforms
|
1301 | *****************/
|
1302 |
|
1303 | /* Transforms are the subproperties contained by the CSS "transform" property. Transforms must undergo normalization
|
1304 | so that they can be referenced in a properties map by their individual names. */
|
1305 | /* Note: When transforms are "set", they are actually assigned to a per-element transformCache. When all transform
|
1306 | setting is complete complete, CSS.flushTransformCache() must be manually called to flush the values to the DOM.
|
1307 | Transform setting is batched in this way to improve performance: the transform style only needs to be updated
|
1308 | once when multiple transform subproperties are being animated simultaneously. */
|
1309 | /* Note: IE9 and Android Gingerbread have support for 2D -- but not 3D -- transforms. Since animating unsupported
|
1310 | transform properties results in the browser ignoring the *entire* transform string, we prevent these 3D values
|
1311 | from being normalized for these browsers so that tweening skips these properties altogether
|
1312 | (since it will ignore them as being unsupported by the browser.) */
|
1313 | if (!(IE <= 9) && !Velocity.State.isGingerbread) {
|
1314 | /* Note: Since the standalone CSS "perspective" property and the CSS transform "perspective" subproperty
|
1315 | share the same name, the latter is given a unique token within Velocity: "transformPerspective". */
|
1316 | CSS.Lists.transformsBase = CSS.Lists.transformsBase.concat(CSS.Lists.transforms3D);
|
1317 | }
|
1318 |
|
1319 | for (var i = 0; i < CSS.Lists.transformsBase.length; i++) {
|
1320 | /* Wrap the dynamically generated normalization function in a new scope so that transformName's value is
|
1321 | paired with its respective function. (Otherwise, all functions would take the final for loop's transformName.) */
|
1322 | (function() {
|
1323 | var transformName = CSS.Lists.transformsBase[i];
|
1324 |
|
1325 | CSS.Normalizations.registered[transformName] = function (type, element, propertyValue) {
|
1326 | switch (type) {
|
1327 | /* The normalized property name is the parent "transform" property -- the property that is actually set in CSS. */
|
1328 | case "name":
|
1329 | return "transform";
|
1330 | /* Transform values are cached onto a per-element transformCache object. */
|
1331 | case "extract":
|
1332 | /* If this transform has yet to be assigned a value, return its null value. */
|
1333 | if (Data(element) === undefined || Data(element).transformCache[transformName] === undefined) {
|
1334 | /* Scale CSS.Lists.transformsBase default to 1 whereas all other transform properties default to 0. */
|
1335 | return /^scale/i.test(transformName) ? 1 : 0;
|
1336 | /* When transform values are set, they are wrapped in parentheses as per the CSS spec.
|
1337 | Thus, when extracting their values (for tween calculations), we strip off the parentheses. */
|
1338 | } else {
|
1339 | return Data(element).transformCache[transformName].replace(/[()]/g, "");
|
1340 | }
|
1341 | case "inject":
|
1342 | var invalid = false;
|
1343 |
|
1344 | /* If an individual transform property contains an unsupported unit type, the browser ignores the *entire* transform property.
|
1345 | Thus, protect users from themselves by skipping setting for transform values supplied with invalid unit types. */
|
1346 | /* Switch on the base transform type; ignore the axis by removing the last letter from the transform's name. */
|
1347 | switch (transformName.substr(0, transformName.length - 1)) {
|
1348 | /* Whitelist unit types for each transform. */
|
1349 | case "translate":
|
1350 | invalid = !/(%|px|em|rem|vw|vh|\d)$/i.test(propertyValue);
|
1351 | break;
|
1352 | /* Since an axis-free "scale" property is supported as well, a little hack is used here to detect it by chopping off its last letter. */
|
1353 | case "scal":
|
1354 | case "scale":
|
1355 | /* Chrome on Android has a bug in which scaled elements blur if their initial scale
|
1356 | value is below 1 (which can happen with forcefeeding). Thus, we detect a yet-unset scale property
|
1357 | and ensure that its first value is always 1. More info: http://stackoverflow.com/questions/10417890/css3-animations-with-transform-causes-blurred-elements-on-webkit/10417962#10417962 */
|
1358 | if (Velocity.State.isAndroid && Data(element).transformCache[transformName] === undefined && propertyValue < 1) {
|
1359 | propertyValue = 1;
|
1360 | }
|
1361 |
|
1362 | invalid = !/(\d)$/i.test(propertyValue);
|
1363 | break;
|
1364 | case "skew":
|
1365 | invalid = !/(deg|\d)$/i.test(propertyValue);
|
1366 | break;
|
1367 | case "rotate":
|
1368 | invalid = !/(deg|\d)$/i.test(propertyValue);
|
1369 | break;
|
1370 | }
|
1371 |
|
1372 | if (!invalid) {
|
1373 | /* As per the CSS spec, wrap the value in parentheses. */
|
1374 | Data(element).transformCache[transformName] = "(" + propertyValue + ")";
|
1375 | }
|
1376 |
|
1377 | /* Although the value is set on the transformCache object, return the newly-updated value for the calling code to process as normal. */
|
1378 | return Data(element).transformCache[transformName];
|
1379 | }
|
1380 | };
|
1381 | })();
|
1382 | }
|
1383 |
|
1384 | /*************
|
1385 | Colors
|
1386 | *************/
|
1387 |
|
1388 | /* Since Velocity only animates a single numeric value per property, color animation is achieved by hooking the individual RGBA components of CSS color properties.
|
1389 | Accordingly, color values must be normalized (e.g. "#ff0000", "red", and "rgb(255, 0, 0)" ==> "255 0 0 1") so that their components can be injected/extracted by CSS.Hooks logic. */
|
1390 | for (var i = 0; i < CSS.Lists.colors.length; i++) {
|
1391 | /* Wrap the dynamically generated normalization function in a new scope so that colorName's value is paired with its respective function.
|
1392 | (Otherwise, all functions would take the final for loop's colorName.) */
|
1393 | (function () {
|
1394 | var colorName = CSS.Lists.colors[i];
|
1395 |
|
1396 | /* Note: In IE<=8, which support rgb but not rgba, color properties are reverted to rgb by stripping off the alpha component. */
|
1397 | CSS.Normalizations.registered[colorName] = function(type, element, propertyValue) {
|
1398 | switch (type) {
|
1399 | case "name":
|
1400 | return colorName;
|
1401 | /* Convert all color values into the rgb format. (Old IE can return hex values and color names instead of rgb/rgba.) */
|
1402 | case "extract":
|
1403 | var extracted;
|
1404 |
|
1405 | /* If the color is already in its hookable form (e.g. "255 255 255 1") due to having been previously extracted, skip extraction. */
|
1406 | if (CSS.RegEx.wrappedValueAlreadyExtracted.test(propertyValue)) {
|
1407 | extracted = propertyValue;
|
1408 | } else {
|
1409 | var converted,
|
1410 | colorNames = {
|
1411 | black: "rgb(0, 0, 0)",
|
1412 | blue: "rgb(0, 0, 255)",
|
1413 | gray: "rgb(128, 128, 128)",
|
1414 | green: "rgb(0, 128, 0)",
|
1415 | red: "rgb(255, 0, 0)",
|
1416 | white: "rgb(255, 255, 255)"
|
1417 | };
|
1418 |
|
1419 | /* Convert color names to rgb. */
|
1420 | if (/^[A-z]+$/i.test(propertyValue)) {
|
1421 | if (colorNames[propertyValue] !== undefined) {
|
1422 | converted = colorNames[propertyValue]
|
1423 | } else {
|
1424 | /* If an unmatched color name is provided, default to black. */
|
1425 | converted = colorNames.black;
|
1426 | }
|
1427 | /* Convert hex values to rgb. */
|
1428 | } else if (CSS.RegEx.isHex.test(propertyValue)) {
|
1429 | converted = "rgb(" + CSS.Values.hexToRgb(propertyValue).join(" ") + ")";
|
1430 | /* If the provided color doesn't match any of the accepted color formats, default to black. */
|
1431 | } else if (!(/^rgba?\(/i.test(propertyValue))) {
|
1432 | converted = colorNames.black;
|
1433 | }
|
1434 |
|
1435 | /* Remove the surrounding "rgb/rgba()" string then replace commas with spaces and strip
|
1436 | repeated spaces (in case the value included spaces to begin with). */
|
1437 | extracted = (converted || propertyValue).toString().match(CSS.RegEx.valueUnwrap)[1].replace(/,(\s+)?/g, " ");
|
1438 | }
|
1439 |
|
1440 | /* So long as this isn't <=IE8, add a fourth (alpha) component if it's missing and default it to 1 (visible). */
|
1441 | if (!(IE <= 8) && extracted.split(" ").length === 3) {
|
1442 | extracted += " 1";
|
1443 | }
|
1444 |
|
1445 | return extracted;
|
1446 | case "inject":
|
1447 | /* If this is IE<=8 and an alpha component exists, strip it off. */
|
1448 | if (IE <= 8) {
|
1449 | if (propertyValue.split(" ").length === 4) {
|
1450 | propertyValue = propertyValue.split(/\s+/).slice(0, 3).join(" ");
|
1451 | }
|
1452 | /* Otherwise, add a fourth (alpha) component if it's missing and default it to 1 (visible). */
|
1453 | } else if (propertyValue.split(" ").length === 3) {
|
1454 | propertyValue += " 1";
|
1455 | }
|
1456 |
|
1457 | /* Re-insert the browser-appropriate wrapper("rgb/rgba()"), insert commas, and strip off decimal units
|
1458 | on all values but the fourth (R, G, and B only accept whole numbers). */
|
1459 | return (IE <= 8 ? "rgb" : "rgba") + "(" + propertyValue.replace(/\s+/g, ",").replace(/\.(\d)+(?=,)/g, "") + ")";
|
1460 | }
|
1461 | };
|
1462 | })();
|
1463 | }
|
1464 | }
|
1465 | },
|
1466 |
|
1467 | /************************
|
1468 | CSS Property Names
|
1469 | ************************/
|
1470 |
|
1471 | Names: {
|
1472 | /* Camelcase a property name into its JavaScript notation (e.g. "background-color" ==> "backgroundColor").
|
1473 | Camelcasing is used to normalize property names between and across calls. */
|
1474 | camelCase: function (property) {
|
1475 | return property.replace(/-(\w)/g, function (match, subMatch) {
|
1476 | return subMatch.toUpperCase();
|
1477 | });
|
1478 | },
|
1479 |
|
1480 | /* For SVG elements, some properties (namely, dimensional ones) are GET/SET via the element's HTML attributes (instead of via CSS styles). */
|
1481 | SVGAttribute: function (property) {
|
1482 | var SVGAttributes = "width|height|x|y|cx|cy|r|rx|ry|x1|x2|y1|y2";
|
1483 |
|
1484 | /* Certain browsers require an SVG transform to be applied as an attribute. (Otherwise, application via CSS is preferable due to 3D support.) */
|
1485 | if (IE || (Velocity.State.isAndroid && !Velocity.State.isChrome)) {
|
1486 | SVGAttributes += "|transform";
|
1487 | }
|
1488 |
|
1489 | return new RegExp("^(" + SVGAttributes + ")$", "i").test(property);
|
1490 | },
|
1491 |
|
1492 | /* Determine whether a property should be set with a vendor prefix. */
|
1493 | /* If a prefixed version of the property exists, return it. Otherwise, return the original property name.
|
1494 | If the property is not at all supported by the browser, return a false flag. */
|
1495 | prefixCheck: function (property) {
|
1496 | /* If this property has already been checked, return the cached value. */
|
1497 | if (Velocity.State.prefixMatches[property]) {
|
1498 | return [ Velocity.State.prefixMatches[property], true ];
|
1499 | } else {
|
1500 | var vendors = [ "", "Webkit", "Moz", "ms", "O" ];
|
1501 |
|
1502 | for (var i = 0, vendorsLength = vendors.length; i < vendorsLength; i++) {
|
1503 | var propertyPrefixed;
|
1504 |
|
1505 | if (i === 0) {
|
1506 | propertyPrefixed = property;
|
1507 | } else {
|
1508 | /* Capitalize the first letter of the property to conform to JavaScript vendor prefix notation (e.g. webkitFilter). */
|
1509 | propertyPrefixed = vendors[i] + property.replace(/^\w/, function(match) { return match.toUpperCase(); });
|
1510 | }
|
1511 |
|
1512 | /* Check if the browser supports this property as prefixed. */
|
1513 | if (Type.isString(Velocity.State.prefixElement.style[propertyPrefixed])) {
|
1514 | /* Cache the match. */
|
1515 | Velocity.State.prefixMatches[property] = propertyPrefixed;
|
1516 |
|
1517 | return [ propertyPrefixed, true ];
|
1518 | }
|
1519 | }
|
1520 |
|
1521 | /* If the browser doesn't support this property in any form, include a false flag so that the caller can decide how to proceed. */
|
1522 | return [ property, false ];
|
1523 | }
|
1524 | }
|
1525 | },
|
1526 |
|
1527 | /************************
|
1528 | CSS Property Values
|
1529 | ************************/
|
1530 |
|
1531 | Values: {
|
1532 | /* Hex to RGB conversion. Copyright Tim Down: http://stackoverflow.com/questions/5623838/rgb-to-hex-and-hex-to-rgb */
|
1533 | hexToRgb: function (hex) {
|
1534 | var shortformRegex = /^#?([a-f\d])([a-f\d])([a-f\d])$/i,
|
1535 | longformRegex = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i,
|
1536 | rgbParts;
|
1537 |
|
1538 | hex = hex.replace(shortformRegex, function (m, r, g, b) {
|
1539 | return r + r + g + g + b + b;
|
1540 | });
|
1541 |
|
1542 | rgbParts = longformRegex.exec(hex);
|
1543 |
|
1544 | return rgbParts ? [ parseInt(rgbParts[1], 16), parseInt(rgbParts[2], 16), parseInt(rgbParts[3], 16) ] : [ 0, 0, 0 ];
|
1545 | },
|
1546 |
|
1547 | isCSSNullValue: function (value) {
|
1548 | /* The browser defaults CSS values that have not been set to either 0 or one of several possible null-value strings.
|
1549 | Thus, we check for both falsiness and these special strings. */
|
1550 | /* Null-value checking is performed to default the special strings to 0 (for the sake of tweening) or their hook
|
1551 | templates as defined as CSS.Hooks (for the sake of hook injection/extraction). */
|
1552 | /* Note: Chrome returns "rgba(0, 0, 0, 0)" for an undefined color whereas IE returns "transparent". */
|
1553 | return (value == 0 || /^(none|auto|transparent|(rgba\(0, ?0, ?0, ?0\)))$/i.test(value));
|
1554 | },
|
1555 |
|
1556 | /* Retrieve a property's default unit type. Used for assigning a unit type when one is not supplied by the user. */
|
1557 | getUnitType: function (property) {
|
1558 | if (/^(rotate|skew)/i.test(property)) {
|
1559 | return "deg";
|
1560 | } else if (/(^(scale|scaleX|scaleY|scaleZ|alpha|flexGrow|flexHeight|zIndex|fontWeight)$)|((opacity|red|green|blue|alpha)$)/i.test(property)) {
|
1561 | /* The above properties are unitless. */
|
1562 | return "";
|
1563 | } else {
|
1564 | /* Default to px for all other properties. */
|
1565 | return "px";
|
1566 | }
|
1567 | },
|
1568 |
|
1569 | /* HTML elements default to an associated display type when they're not set to display:none. */
|
1570 | /* Note: This function is used for correctly setting the non-"none" display value in certain Velocity redirects, such as fadeIn/Out. */
|
1571 | getDisplayType: function (element) {
|
1572 | var tagName = element && element.tagName.toString().toLowerCase();
|
1573 |
|
1574 | if (/^(b|big|i|small|tt|abbr|acronym|cite|code|dfn|em|kbd|strong|samp|var|a|bdo|br|img|map|object|q|script|span|sub|sup|button|input|label|select|textarea)$/i.test(tagName)) {
|
1575 | return "inline";
|
1576 | } else if (/^(li)$/i.test(tagName)) {
|
1577 | return "list-item";
|
1578 | } else if (/^(tr)$/i.test(tagName)) {
|
1579 | return "table-row";
|
1580 | /* Default to "block" when no match is found. */
|
1581 | } else {
|
1582 | return "block";
|
1583 | }
|
1584 | },
|
1585 |
|
1586 | /* The class add/remove functions are used to temporarily apply a "velocity-animating" class to elements while they're animating. */
|
1587 | addClass: function (element, className) {
|
1588 | if (element.classList) {
|
1589 | element.classList.add(className);
|
1590 | } else {
|
1591 | element.className += (element.className.length ? " " : "") + className;
|
1592 | }
|
1593 | },
|
1594 |
|
1595 | removeClass: function (element, className) {
|
1596 | if (element.classList) {
|
1597 | element.classList.remove(className);
|
1598 | } else {
|
1599 | element.className = element.className.toString().replace(new RegExp("(^|\\s)" + className.split(" ").join("|") + "(\\s|$)", "gi"), " ");
|
1600 | }
|
1601 | }
|
1602 | },
|
1603 |
|
1604 | /****************************
|
1605 | Style Getting & Setting
|
1606 | ****************************/
|
1607 |
|
1608 | /* The singular getPropertyValue, which routes the logic for all normalizations, hooks, and standard CSS properties. */
|
1609 | getPropertyValue: function (element, property, rootPropertyValue, forceStyleLookup) {
|
1610 | /* Get an element's computed property value. */
|
1611 | /* Note: Retrieving the value of a CSS property cannot simply be performed by checking an element's
|
1612 | style attribute (which only reflects user-defined values). Instead, the browser must be queried for a property's
|
1613 | *computed* value. You can read more about getComputedStyle here: https://developer.mozilla.org/en/docs/Web/API/window.getComputedStyle */
|
1614 | function computePropertyValue (element, property) {
|
1615 | /* When box-sizing isn't set to border-box, height and width style values are incorrectly computed when an
|
1616 | element's scrollbars are visible (which expands the element's dimensions). Thus, we defer to the more accurate
|
1617 | offsetHeight/Width property, which includes the total dimensions for interior, border, padding, and scrollbar.
|
1618 | We subtract border and padding to get the sum of interior + scrollbar. */
|
1619 | var computedValue = 0;
|
1620 |
|
1621 | /* IE<=8 doesn't support window.getComputedStyle, thus we defer to jQuery, which has an extensive array
|
1622 | of hacks to accurately retrieve IE8 property values. Re-implementing that logic here is not worth bloating the
|
1623 | codebase for a dying browser. The performance repercussions of using jQuery here are minimal since
|
1624 | Velocity is optimized to rarely (and sometimes never) query the DOM. Further, the $.css() codepath isn't that slow. */
|
1625 | if (IE <= 8) {
|
1626 | computedValue = $.css(element, property); /* GET */
|
1627 | /* All other browsers support getComputedStyle. The returned live object reference is cached onto its
|
1628 | associated element so that it does not need to be refetched upon every GET. */
|
1629 | } else {
|
1630 | /* Browsers do not return height and width values for elements that are set to display:"none". Thus, we temporarily
|
1631 | toggle display to the element type's default value. */
|
1632 | var toggleDisplay = false;
|
1633 |
|
1634 | if (/^(width|height)$/.test(property) && CSS.getPropertyValue(element, "display") === 0) {
|
1635 | toggleDisplay = true;
|
1636 | CSS.setPropertyValue(element, "display", CSS.Values.getDisplayType(element));
|
1637 | }
|
1638 |
|
1639 | function revertDisplay () {
|
1640 | if (toggleDisplay) {
|
1641 | CSS.setPropertyValue(element, "display", "none");
|
1642 | }
|
1643 | }
|
1644 |
|
1645 | if (!forceStyleLookup) {
|
1646 | if (property === "height" && CSS.getPropertyValue(element, "boxSizing").toString().toLowerCase() !== "border-box") {
|
1647 | var contentBoxHeight = element.offsetHeight - (parseFloat(CSS.getPropertyValue(element, "borderTopWidth")) || 0) - (parseFloat(CSS.getPropertyValue(element, "borderBottomWidth")) || 0) - (parseFloat(CSS.getPropertyValue(element, "paddingTop")) || 0) - (parseFloat(CSS.getPropertyValue(element, "paddingBottom")) || 0);
|
1648 | revertDisplay();
|
1649 |
|
1650 | return contentBoxHeight;
|
1651 | } else if (property === "width" && CSS.getPropertyValue(element, "boxSizing").toString().toLowerCase() !== "border-box") {
|
1652 | var contentBoxWidth = element.offsetWidth - (parseFloat(CSS.getPropertyValue(element, "borderLeftWidth")) || 0) - (parseFloat(CSS.getPropertyValue(element, "borderRightWidth")) || 0) - (parseFloat(CSS.getPropertyValue(element, "paddingLeft")) || 0) - (parseFloat(CSS.getPropertyValue(element, "paddingRight")) || 0);
|
1653 | revertDisplay();
|
1654 |
|
1655 | return contentBoxWidth;
|
1656 | }
|
1657 | }
|
1658 |
|
1659 | var computedStyle;
|
1660 |
|
1661 | /* For elements that Velocity hasn't been called on directly (e.g. when Velocity queries the DOM on behalf
|
1662 | of a parent of an element its animating), perform a direct getComputedStyle lookup since the object isn't cached. */
|
1663 | if (Data(element) === undefined) {
|
1664 | computedStyle = window.getComputedStyle(element, null); /* GET */
|
1665 | /* If the computedStyle object has yet to be cached, do so now. */
|
1666 | } else if (!Data(element).computedStyle) {
|
1667 | computedStyle = Data(element).computedStyle = window.getComputedStyle(element, null); /* GET */
|
1668 | /* If computedStyle is cached, use it. */
|
1669 | } else {
|
1670 | computedStyle = Data(element).computedStyle;
|
1671 | }
|
1672 |
|
1673 | /* IE and Firefox do not return a value for the generic borderColor -- they only return individual values for each border side's color.
|
1674 | As a polyfill for querying individual border side colors, just return the top border's color. */
|
1675 | if ((IE || Velocity.State.isFirefox) && property === "borderColor") {
|
1676 | property = "borderTopColor";
|
1677 | }
|
1678 |
|
1679 | /* IE9 has a bug in which the "filter" property must be accessed from computedStyle using the getPropertyValue method
|
1680 | instead of a direct property lookup. The getPropertyValue method is slower than a direct lookup, which is why we avoid it by default. */
|
1681 | if (IE === 9 && property === "filter") {
|
1682 | computedValue = computedStyle.getPropertyValue(property); /* GET */
|
1683 | } else {
|
1684 | computedValue = computedStyle[property];
|
1685 | }
|
1686 |
|
1687 | /* Fall back to the property's style value (if defined) when computedValue returns nothing,
|
1688 | which can happen when the element hasn't been painted. */
|
1689 | if (computedValue === "" || computedValue === null) {
|
1690 | computedValue = element.style[property];
|
1691 | }
|
1692 |
|
1693 | revertDisplay();
|
1694 | }
|
1695 |
|
1696 | /* For top, right, bottom, and left (TRBL) values that are set to "auto" on elements of "fixed" or "absolute" position,
|
1697 | defer to jQuery for converting "auto" to a numeric value. (For elements with a "static" or "relative" position, "auto" has the same
|
1698 | effect as being set to 0, so no conversion is necessary.) */
|
1699 | /* An example of why numeric conversion is necessary: When an element with "position:absolute" has an untouched "left"
|
1700 | property, which reverts to "auto", left's value is 0 relative to its parent element, but is often non-zero relative
|
1701 | to its *containing* (not parent) element, which is the nearest "position:relative" ancestor or the viewport (and always the viewport in the case of "position:fixed"). */
|
1702 | if (computedValue === "auto" && /^(top|right|bottom|left)$/i.test(property)) {
|
1703 | var position = computePropertyValue(element, "position"); /* GET */
|
1704 |
|
1705 | /* For absolute positioning, jQuery's $.position() only returns values for top and left;
|
1706 | right and bottom will have their "auto" value reverted to 0. */
|
1707 | /* Note: A jQuery object must be created here since jQuery doesn't have a low-level alias for $.position().
|
1708 | Not a big deal since we're currently in a GET batch anyway. */
|
1709 | if (position === "fixed" || (position === "absolute" && /top|left/i.test(property))) {
|
1710 | /* Note: jQuery strips the pixel unit from its returned values; we re-add it here to conform with computePropertyValue's behavior. */
|
1711 | computedValue = $(element).position()[property] + "px"; /* GET */
|
1712 | }
|
1713 | }
|
1714 |
|
1715 | return computedValue;
|
1716 | }
|
1717 |
|
1718 | var propertyValue;
|
1719 |
|
1720 | /* If this is a hooked property (e.g. "clipLeft" instead of the root property of "clip"),
|
1721 | extract the hook's value from a normalized rootPropertyValue using CSS.Hooks.extractValue(). */
|
1722 | if (CSS.Hooks.registered[property]) {
|
1723 | var hook = property,
|
1724 | hookRoot = CSS.Hooks.getRoot(hook);
|
1725 |
|
1726 | /* If a cached rootPropertyValue wasn't passed in (which Velocity always attempts to do in order to avoid requerying the DOM),
|
1727 | query the DOM for the root property's value. */
|
1728 | if (rootPropertyValue === undefined) {
|
1729 | /* Since the browser is now being directly queried, use the official post-prefixing property name for this lookup. */
|
1730 | rootPropertyValue = CSS.getPropertyValue(element, CSS.Names.prefixCheck(hookRoot)[0]); /* GET */
|
1731 | }
|
1732 |
|
1733 | /* If this root has a normalization registered, peform the associated normalization extraction. */
|
1734 | if (CSS.Normalizations.registered[hookRoot]) {
|
1735 | rootPropertyValue = CSS.Normalizations.registered[hookRoot]("extract", element, rootPropertyValue);
|
1736 | }
|
1737 |
|
1738 | /* Extract the hook's value. */
|
1739 | propertyValue = CSS.Hooks.extractValue(hook, rootPropertyValue);
|
1740 |
|
1741 | /* If this is a normalized property (e.g. "opacity" becomes "filter" in <=IE8) or "translateX" becomes "transform"),
|
1742 | normalize the property's name and value, and handle the special case of transforms. */
|
1743 | /* Note: Normalizing a property is mutually exclusive from hooking a property since hook-extracted values are strictly
|
1744 | numerical and therefore do not require normalization extraction. */
|
1745 | } else if (CSS.Normalizations.registered[property]) {
|
1746 | var normalizedPropertyName,
|
1747 | normalizedPropertyValue;
|
1748 |
|
1749 | normalizedPropertyName = CSS.Normalizations.registered[property]("name", element);
|
1750 |
|
1751 | /* Transform values are calculated via normalization extraction (see below), which checks against the element's transformCache.
|
1752 | At no point do transform GETs ever actually query the DOM; initial stylesheet values are never processed.
|
1753 | This is because parsing 3D transform matrices is not always accurate and would bloat our codebase;
|
1754 | thus, normalization extraction defaults initial transform values to their zero-values (e.g. 1 for scaleX and 0 for translateX). */
|
1755 | if (normalizedPropertyName !== "transform") {
|
1756 | normalizedPropertyValue = computePropertyValue(element, CSS.Names.prefixCheck(normalizedPropertyName)[0]); /* GET */
|
1757 |
|
1758 | /* If the value is a CSS null-value and this property has a hook template, use that zero-value template so that hooks can be extracted from it. */
|
1759 | if (CSS.Values.isCSSNullValue(normalizedPropertyValue) && CSS.Hooks.templates[property]) {
|
1760 | normalizedPropertyValue = CSS.Hooks.templates[property][1];
|
1761 | }
|
1762 | }
|
1763 |
|
1764 | propertyValue = CSS.Normalizations.registered[property]("extract", element, normalizedPropertyValue);
|
1765 | }
|
1766 |
|
1767 | /* If a (numeric) value wasn't produced via hook extraction or normalization, query the DOM. */
|
1768 | if (!/^[\d-]/.test(propertyValue)) {
|
1769 | /* For SVG elements, dimensional properties (which SVGAttribute() detects) are tweened via
|
1770 | their HTML attribute values instead of their CSS style values. */
|
1771 | if (Data(element) && Data(element).isSVG && CSS.Names.SVGAttribute(property)) {
|
1772 | /* Since the height/width attribute values must be set manually, they don't reflect computed values.
|
1773 | Thus, we use use getBBox() to ensure we always get values for elements with undefined height/width attributes. */
|
1774 | if (/^(height|width)$/i.test(property)) {
|
1775 | propertyValue = element.getBBox()[property];
|
1776 | /* Otherwise, access the attribute value directly. */
|
1777 | } else {
|
1778 | propertyValue = element.getAttribute(property);
|
1779 | }
|
1780 | } else {
|
1781 | propertyValue = computePropertyValue(element, CSS.Names.prefixCheck(property)[0]); /* GET */
|
1782 | }
|
1783 | }
|
1784 |
|
1785 | /* Since property lookups are for animation purposes (which entails computing the numeric delta between start and end values),
|
1786 | convert CSS null-values to an integer of value 0. */
|
1787 | if (CSS.Values.isCSSNullValue(propertyValue)) {
|
1788 | propertyValue = 0;
|
1789 | }
|
1790 |
|
1791 | if (Velocity.debug >= 2) console.log("Get " + property + ": " + propertyValue);
|
1792 |
|
1793 | return propertyValue;
|
1794 | },
|
1795 |
|
1796 | /* The singular setPropertyValue, which routes the logic for all normalizations, hooks, and standard CSS properties. */
|
1797 | setPropertyValue: function(element, property, propertyValue, rootPropertyValue, scrollData) {
|
1798 | var propertyName = property;
|
1799 |
|
1800 | /* In order to be subjected to call options and element queueing, scroll animation is routed through Velocity as if it were a standard CSS property. */
|
1801 | if (property === "scroll") {
|
1802 | /* If a container option is present, scroll the container instead of the browser window. */
|
1803 | if (scrollData.container) {
|
1804 | scrollData.container["scroll" + scrollData.direction] = propertyValue;
|
1805 | /* Otherwise, Velocity defaults to scrolling the browser window. */
|
1806 | } else {
|
1807 | if (scrollData.direction === "Left") {
|
1808 | window.scrollTo(propertyValue, scrollData.alternateValue);
|
1809 | } else {
|
1810 | window.scrollTo(scrollData.alternateValue, propertyValue);
|
1811 | }
|
1812 | }
|
1813 | } else {
|
1814 | /* Transforms (translateX, rotateZ, etc.) are applied to a per-element transformCache object, which is manually flushed via flushTransformCache().
|
1815 | Thus, for now, we merely cache transforms being SET. */
|
1816 | if (CSS.Normalizations.registered[property] && CSS.Normalizations.registered[property]("name", element) === "transform") {
|
1817 | /* Perform a normalization injection. */
|
1818 | /* Note: The normalization logic handles the transformCache updating. */
|
1819 | CSS.Normalizations.registered[property]("inject", element, propertyValue);
|
1820 |
|
1821 | propertyName = "transform";
|
1822 | propertyValue = Data(element).transformCache[property];
|
1823 | } else {
|
1824 | /* Inject hooks. */
|
1825 | if (CSS.Hooks.registered[property]) {
|
1826 | var hookName = property,
|
1827 | hookRoot = CSS.Hooks.getRoot(property);
|
1828 |
|
1829 | /* If a cached rootPropertyValue was not provided, query the DOM for the hookRoot's current value. */
|
1830 | rootPropertyValue = rootPropertyValue || CSS.getPropertyValue(element, hookRoot); /* GET */
|
1831 |
|
1832 | propertyValue = CSS.Hooks.injectValue(hookName, propertyValue, rootPropertyValue);
|
1833 | property = hookRoot;
|
1834 | }
|
1835 |
|
1836 | /* Normalize names and values. */
|
1837 | if (CSS.Normalizations.registered[property]) {
|
1838 | propertyValue = CSS.Normalizations.registered[property]("inject", element, propertyValue);
|
1839 | property = CSS.Normalizations.registered[property]("name", element);
|
1840 | }
|
1841 |
|
1842 | /* Assign the appropriate vendor prefix before performing an official style update. */
|
1843 | propertyName = CSS.Names.prefixCheck(property)[0];
|
1844 |
|
1845 | /* A try/catch is used for IE<=8, which throws an error when "invalid" CSS values are set, e.g. a negative width.
|
1846 | Try/catch is avoided for other browsers since it incurs a performance overhead. */
|
1847 | if (IE <= 8) {
|
1848 | try {
|
1849 | element.style[propertyName] = propertyValue;
|
1850 | } catch (error) { if (Velocity.debug) console.log("Browser does not support [" + propertyValue + "] for [" + propertyName + "]"); }
|
1851 | /* SVG elements have their dimensional properties (width, height, x, y, cx, etc.) applied directly as attributes instead of as styles. */
|
1852 | /* Note: IE8 does not support SVG elements, so it's okay that we skip it for SVG animation. */
|
1853 | } else if (Data(element) && Data(element).isSVG && CSS.Names.SVGAttribute(property)) {
|
1854 | /* Note: For SVG attributes, vendor-prefixed property names are never used. */
|
1855 | /* Note: Not all CSS properties can be animated via attributes, but the browser won't throw an error for unsupported properties. */
|
1856 | element.setAttribute(property, propertyValue);
|
1857 | } else {
|
1858 | element.style[propertyName] = propertyValue;
|
1859 | }
|
1860 |
|
1861 | if (Velocity.debug >= 2) console.log("Set " + property + " (" + propertyName + "): " + propertyValue);
|
1862 | }
|
1863 | }
|
1864 |
|
1865 | /* Return the normalized property name and value in case the caller wants to know how these values were modified before being applied to the DOM. */
|
1866 | return [ propertyName, propertyValue ];
|
1867 | },
|
1868 |
|
1869 | /* To increase performance by batching transform updates into a single SET, transforms are not directly applied to an element until flushTransformCache() is called. */
|
1870 | /* Note: Velocity applies transform properties in the same order that they are chronogically introduced to the element's CSS styles. */
|
1871 | flushTransformCache: function(element) {
|
1872 | var transformString = "";
|
1873 |
|
1874 | /* Certain browsers require that SVG transforms be applied as an attribute. However, the SVG transform attribute takes a modified version of CSS's transform string
|
1875 | (units are dropped and, except for skewX/Y, subproperties are merged into their master property -- e.g. scaleX and scaleY are merged into scale(X Y). */
|
1876 | if ((IE || (Velocity.State.isAndroid && !Velocity.State.isChrome)) && Data(element).isSVG) {
|
1877 | /* Since transform values are stored in their parentheses-wrapped form, we use a helper function to strip out their numeric values.
|
1878 | Further, SVG transform properties only take unitless (representing pixels) values, so it's okay that parseFloat() strips the unit suffixed to the float value. */
|
1879 | function getTransformFloat (transformProperty) {
|
1880 | return parseFloat(CSS.getPropertyValue(element, transformProperty));
|
1881 | }
|
1882 |
|
1883 | /* Create an object to organize all the transforms that we'll apply to the SVG element. To keep the logic simple,
|
1884 | we process *all* transform properties -- even those that may not be explicitly applied (since they default to their zero-values anyway). */
|
1885 | var SVGTransforms = {
|
1886 | translate: [ getTransformFloat("translateX"), getTransformFloat("translateY") ],
|
1887 | skewX: [ getTransformFloat("skewX") ], skewY: [ getTransformFloat("skewY") ],
|
1888 | /* If the scale property is set (non-1), use that value for the scaleX and scaleY values
|
1889 | (this behavior mimics the result of animating all these properties at once on HTML elements). */
|
1890 | scale: getTransformFloat("scale") !== 1 ? [ getTransformFloat("scale"), getTransformFloat("scale") ] : [ getTransformFloat("scaleX"), getTransformFloat("scaleY") ],
|
1891 | /* Note: SVG's rotate transform takes three values: rotation degrees followed by the X and Y values
|
1892 | defining the rotation's origin point. We ignore the origin values (default them to 0). */
|
1893 | rotate: [ getTransformFloat("rotateZ"), 0, 0 ]
|
1894 | };
|
1895 |
|
1896 | /* Iterate through the transform properties in the user-defined property map order.
|
1897 | (This mimics the behavior of non-SVG transform animation.) */
|
1898 | $.each(Data(element).transformCache, function(transformName) {
|
1899 | /* Except for with skewX/Y, revert the axis-specific transform subproperties to their axis-free master
|
1900 | properties so that they match up with SVG's accepted transform properties. */
|
1901 | if (/^translate/i.test(transformName)) {
|
1902 | transformName = "translate";
|
1903 | } else if (/^scale/i.test(transformName)) {
|
1904 | transformName = "scale";
|
1905 | } else if (/^rotate/i.test(transformName)) {
|
1906 | transformName = "rotate";
|
1907 | }
|
1908 |
|
1909 | /* Check that we haven't yet deleted the property from the SVGTransforms container. */
|
1910 | if (SVGTransforms[transformName]) {
|
1911 | /* Append the transform property in the SVG-supported transform format. As per the spec, surround the space-delimited values in parentheses. */
|
1912 | transformString += transformName + "(" + SVGTransforms[transformName].join(" ") + ")" + " ";
|
1913 |
|
1914 | /* After processing an SVG transform property, delete it from the SVGTransforms container so we don't
|
1915 | re-insert the same master property if we encounter another one of its axis-specific properties. */
|
1916 | delete SVGTransforms[transformName];
|
1917 | }
|
1918 | });
|
1919 | } else {
|
1920 | var transformValue,
|
1921 | perspective;
|
1922 |
|
1923 | /* Transform properties are stored as members of the transformCache object. Concatenate all the members into a string. */
|
1924 | $.each(Data(element).transformCache, function(transformName) {
|
1925 | transformValue = Data(element).transformCache[transformName];
|
1926 |
|
1927 | /* Transform's perspective subproperty must be set first in order to take effect. Store it temporarily. */
|
1928 | if (transformName === "transformPerspective") {
|
1929 | perspective = transformValue;
|
1930 | return true;
|
1931 | }
|
1932 |
|
1933 | /* IE9 only supports one rotation type, rotateZ, which it refers to as "rotate". */
|
1934 | if (IE === 9 && transformName === "rotateZ") {
|
1935 | transformName = "rotate";
|
1936 | }
|
1937 |
|
1938 | transformString += transformName + transformValue + " ";
|
1939 | });
|
1940 |
|
1941 | /* If present, set the perspective subproperty first. */
|
1942 | if (perspective) {
|
1943 | transformString = "perspective" + perspective + " " + transformString;
|
1944 | }
|
1945 | }
|
1946 |
|
1947 | CSS.setPropertyValue(element, "transform", transformString);
|
1948 | }
|
1949 | };
|
1950 |
|
1951 | /* Register hooks and normalizations. */
|
1952 | CSS.Hooks.register();
|
1953 | CSS.Normalizations.register();
|
1954 |
|
1955 | /* Allow hook setting in the same fashion as jQuery's $.css(). */
|
1956 | Velocity.hook = function (elements, arg2, arg3) {
|
1957 | var value = undefined;
|
1958 |
|
1959 | elements = sanitizeElements(elements);
|
1960 |
|
1961 | $.each(elements, function(i, element) {
|
1962 | /* Initialize Velocity's per-element data cache if this element hasn't previously been animated. */
|
1963 | if (Data(element) === undefined) {
|
1964 | Velocity.init(element);
|
1965 | }
|
1966 |
|
1967 | /* Get property value. If an element set was passed in, only return the value for the first element. */
|
1968 | if (arg3 === undefined) {
|
1969 | if (value === undefined) {
|
1970 | value = Velocity.CSS.getPropertyValue(element, arg2);
|
1971 | }
|
1972 | /* Set property value. */
|
1973 | } else {
|
1974 | /* sPV returns an array of the normalized propertyName/propertyValue pair used to update the DOM. */
|
1975 | var adjustedSet = Velocity.CSS.setPropertyValue(element, arg2, arg3);
|
1976 |
|
1977 | /* Transform properties don't automatically set. They have to be flushed to the DOM. */
|
1978 | if (adjustedSet[0] === "transform") {
|
1979 | Velocity.CSS.flushTransformCache(element);
|
1980 | }
|
1981 |
|
1982 | value = adjustedSet;
|
1983 | }
|
1984 | });
|
1985 |
|
1986 | return value;
|
1987 | };
|
1988 |
|
1989 | /*****************
|
1990 | Animation
|
1991 | *****************/
|
1992 |
|
1993 | var animate = function() {
|
1994 |
|
1995 | /******************
|
1996 | Call Chain
|
1997 | ******************/
|
1998 |
|
1999 | /* Logic for determining what to return to the call stack when exiting out of Velocity. */
|
2000 | function getChain () {
|
2001 | /* If we are using the utility function, attempt to return this call's promise. If no promise library was detected,
|
2002 | default to null instead of returning the targeted elements so that utility function's return value is standardized. */
|
2003 | if (isUtility) {
|
2004 | return promiseData.promise || null;
|
2005 | /* Otherwise, if we're using $.fn, return the jQuery-/Zepto-wrapped element set. */
|
2006 | } else {
|
2007 | return elementsWrapped;
|
2008 | }
|
2009 | }
|
2010 |
|
2011 | /*************************
|
2012 | Arguments Assignment
|
2013 | *************************/
|
2014 |
|
2015 | /* To allow for expressive CoffeeScript code, Velocity supports an alternative syntax in which "properties" and "options"
|
2016 | objects are defined on a container object that's passed in as Velocity's sole argument. */
|
2017 | /* Note: Some browsers automatically populate arguments with a "properties" object. We detect it by checking for its default "names" property. */
|
2018 | var syntacticSugar = (arguments[0] && (($.isPlainObject(arguments[0].properties) && !arguments[0].properties.names) || Type.isString(arguments[0].properties))),
|
2019 | /* Whether Velocity was called via the utility function (as opposed to on a jQuery/Zepto object). */
|
2020 | isUtility,
|
2021 | /* When Velocity is called via the utility function ($.Velocity()/Velocity()), elements are explicitly
|
2022 | passed in as the first parameter. Thus, argument positioning varies. We normalize them here. */
|
2023 | elementsWrapped,
|
2024 | argumentIndex;
|
2025 |
|
2026 | var elements,
|
2027 | propertiesMap,
|
2028 | options;
|
2029 |
|
2030 | /* Detect jQuery/Zepto elements being animated via the $.fn method. */
|
2031 | if (Type.isWrapped(this)) {
|
2032 | isUtility = false;
|
2033 |
|
2034 | argumentIndex = 0;
|
2035 | elements = this;
|
2036 | elementsWrapped = this;
|
2037 | /* Otherwise, raw elements are being animated via the utility function. */
|
2038 | } else {
|
2039 | isUtility = true;
|
2040 |
|
2041 | argumentIndex = 1;
|
2042 | elements = syntacticSugar ? arguments[0].elements : arguments[0];
|
2043 | }
|
2044 |
|
2045 | elements = sanitizeElements(elements);
|
2046 |
|
2047 | if (!elements) {
|
2048 | return;
|
2049 | }
|
2050 |
|
2051 | if (syntacticSugar) {
|
2052 | propertiesMap = arguments[0].properties;
|
2053 | options = arguments[0].options;
|
2054 | } else {
|
2055 | propertiesMap = arguments[argumentIndex];
|
2056 | options = arguments[argumentIndex + 1];
|
2057 | }
|
2058 |
|
2059 | /* The length of the element set (in the form of a nodeList or an array of elements) is defaulted to 1 in case a
|
2060 | single raw DOM element is passed in (which doesn't contain a length property). */
|
2061 | var elementsLength = elements.length,
|
2062 | elementsIndex = 0;
|
2063 |
|
2064 | /***************************
|
2065 | Argument Overloading
|
2066 | ***************************/
|
2067 |
|
2068 | /* Support is included for jQuery's argument overloading: $.animate(propertyMap [, duration] [, easing] [, complete]).
|
2069 | Overloading is detected by checking for the absence of an object being passed into options. */
|
2070 | /* Note: The stop action does not accept animation options, and is therefore excluded from this check. */
|
2071 | if (propertiesMap !== "stop" && !$.isPlainObject(options)) {
|
2072 | /* The utility function shifts all arguments one position to the right, so we adjust for that offset. */
|
2073 | var startingArgumentPosition = argumentIndex + 1;
|
2074 |
|
2075 | options = {};
|
2076 |
|
2077 | /* Iterate through all options arguments */
|
2078 | for (var i = startingArgumentPosition; i < arguments.length; i++) {
|
2079 | /* Treat a number as a duration. Parse it out. */
|
2080 | /* Note: The following RegEx will return true if passed an array with a number as its first item.
|
2081 | Thus, arrays are skipped from this check. */
|
2082 | if (!Type.isArray(arguments[i]) && (/^(fast|normal|slow)$/i.test(arguments[i]) || /^\d/.test(arguments[i]))) {
|
2083 | options.duration = arguments[i];
|
2084 | /* Treat strings and arrays as easings. */
|
2085 | } else if (Type.isString(arguments[i]) || Type.isArray(arguments[i])) {
|
2086 | options.easing = arguments[i];
|
2087 | /* Treat a function as a complete callback. */
|
2088 | } else if (Type.isFunction(arguments[i])) {
|
2089 | options.complete = arguments[i];
|
2090 | }
|
2091 | }
|
2092 | }
|
2093 |
|
2094 | /***************
|
2095 | Promises
|
2096 | ***************/
|
2097 |
|
2098 | var promiseData = {
|
2099 | promise: null,
|
2100 | resolver: null,
|
2101 | rejecter: null
|
2102 | };
|
2103 |
|
2104 | /* If this call was made via the utility function (which is the default method of invocation when jQuery/Zepto are not being used), and if
|
2105 | promise support was detected, create a promise object for this call and store references to its resolver and rejecter methods. The resolve
|
2106 | method is used when a call completes naturally or is prematurely stopped by the user. In both cases, completeCall() handles the associated
|
2107 | call cleanup and promise resolving logic. The reject method is used when an invalid set of arguments is passed into a Velocity call. */
|
2108 | /* Note: Velocity employs a call-based queueing architecture, which means that stopping an animating element actually stops the full call that
|
2109 | triggered it -- not that one element exclusively. Similarly, there is one promise per call, and all elements targeted by a Velocity call are
|
2110 | grouped together for the purposes of resolving and rejecting a promise. */
|
2111 | if (isUtility && Velocity.Promise) {
|
2112 | promiseData.promise = new Velocity.Promise(function (resolve, reject) {
|
2113 | promiseData.resolver = resolve;
|
2114 | promiseData.rejecter = reject;
|
2115 | });
|
2116 | }
|
2117 |
|
2118 | /*********************
|
2119 | Action Detection
|
2120 | *********************/
|
2121 |
|
2122 | /* Velocity's behavior is categorized into "actions": Elements can either be specially scrolled into view,
|
2123 | or they can be started, stopped, or reversed. If a literal or referenced properties map is passed in as Velocity's
|
2124 | first argument, the associated action is "start". Alternatively, "scroll", "reverse", or "stop" can be passed in instead of a properties map. */
|
2125 | var action;
|
2126 |
|
2127 | switch (propertiesMap) {
|
2128 | case "scroll":
|
2129 | action = "scroll";
|
2130 | break;
|
2131 |
|
2132 | case "reverse":
|
2133 | action = "reverse";
|
2134 | break;
|
2135 |
|
2136 | case "stop":
|
2137 | /*******************
|
2138 | Action: Stop
|
2139 | *******************/
|
2140 |
|
2141 | /* Clear the currently-active delay on each targeted element. */
|
2142 | $.each(elements, function(i, element) {
|
2143 | if (Data(element) && Data(element).delayTimer) {
|
2144 | /* Stop the timer from triggering its cached next() function. */
|
2145 | clearTimeout(Data(element).delayTimer.setTimeout);
|
2146 |
|
2147 | /* Manually call the next() function so that the subsequent queue items can progress. */
|
2148 | if (Data(element).delayTimer.next) {
|
2149 | Data(element).delayTimer.next();
|
2150 | }
|
2151 |
|
2152 | delete Data(element).delayTimer;
|
2153 | }
|
2154 | });
|
2155 |
|
2156 | var callsToStop = [];
|
2157 |
|
2158 | /* When the stop action is triggered, the elements' currently active call is immediately stopped. The active call might have
|
2159 | been applied to multiple elements, in which case all of the call's elements will be subjected to stopping. When an element
|
2160 | is stopped, the next item in its animation queue is immediately triggered. */
|
2161 | /* An additional argument may be passed in to clear an element's remaining queued calls. Either true (which defaults to the "fx" queue)
|
2162 | or a custom queue string can be passed in. */
|
2163 | /* Note: The stop command runs prior to Queueing since its behavior is intended to take effect *immediately*,
|
2164 | regardless of the element's current queue state. */
|
2165 |
|
2166 | /* Iterate through every active call. */
|
2167 | $.each(Velocity.State.calls, function(i, activeCall) {
|
2168 | /* Inactive calls are set to false by the logic inside completeCall(). Skip them. */
|
2169 | if (activeCall) {
|
2170 | /* Iterate through the active call's targeted elements. */
|
2171 | $.each(activeCall[1], function(k, activeElement) {
|
2172 | var queueName = Type.isString(options) ? options : "";
|
2173 |
|
2174 | if (options !== undefined && activeCall[2].queue !== queueName) {
|
2175 | return true;
|
2176 | }
|
2177 |
|
2178 | /* Iterate through the calls targeted by the stop command. */
|
2179 | $.each(elements, function(l, element) {
|
2180 | /* Check that this call was applied to the target element. */
|
2181 | if (element === activeElement) {
|
2182 | /* Optionally clear the remaining queued calls. */
|
2183 | if (options !== undefined) {
|
2184 | /* Iterate through the items in the element's queue. */
|
2185 | $.each($.queue(element, queueName), function(_, item) {
|
2186 | /* The queue array can contain an "inprogress" string, which we skip. */
|
2187 | if (Type.isFunction(item)) {
|
2188 | /* Pass the item's callback a flag indicating that we want to abort from the queue call.
|
2189 | (Specifically, the queue will resolve the call's associated promise then abort.) */
|
2190 | item(null, true);
|
2191 | }
|
2192 | });
|
2193 |
|
2194 | /* Clearing the $.queue() array is achieved by resetting it to []. */
|
2195 | $.queue(element, queueName, []);
|
2196 | }
|
2197 |
|
2198 | if (Data(element) && queueName === "") {
|
2199 | /* Since "reverse" uses cached start values (the previous call's endValues),
|
2200 | these values must be changed to reflect the final value that the elements were actually tweened to. */
|
2201 | $.each(Data(element).tweensContainer, function(m, activeTween) {
|
2202 | activeTween.endValue = activeTween.currentValue;
|
2203 | });
|
2204 | }
|
2205 |
|
2206 | callsToStop.push(i);
|
2207 | }
|
2208 | });
|
2209 | });
|
2210 | }
|
2211 | });
|
2212 |
|
2213 | /* Prematurely call completeCall() on each matched active call, passing an additional flag to indicate
|
2214 | that the complete callback and display:none setting should be skipped since we're completing prematurely. */
|
2215 | $.each(callsToStop, function(i, j) {
|
2216 | completeCall(j, true);
|
2217 | });
|
2218 |
|
2219 | if (promiseData.promise) {
|
2220 | /* Immediately resolve the promise associated with this stop call since stop runs synchronously. */
|
2221 | promiseData.resolver(elements);
|
2222 | }
|
2223 |
|
2224 | /* Since we're stopping, and not proceeding with queueing, exit out of Velocity. */
|
2225 | return getChain();
|
2226 |
|
2227 | default:
|
2228 | /* Treat a non-empty plain object as a literal properties map. */
|
2229 | if ($.isPlainObject(propertiesMap) && !Type.isEmptyObject(propertiesMap)) {
|
2230 | action = "start";
|
2231 |
|
2232 | /****************
|
2233 | Redirects
|
2234 | ****************/
|
2235 |
|
2236 | /* Check if a string matches a registered redirect (see Redirects above). */
|
2237 | } else if (Type.isString(propertiesMap) && Velocity.Redirects[propertiesMap]) {
|
2238 | var opts = $.extend({}, options),
|
2239 | durationOriginal = opts.duration,
|
2240 | delayOriginal = opts.delay || 0;
|
2241 |
|
2242 | /* If the backwards option was passed in, reverse the element set so that elements animate from the last to the first. */
|
2243 | if (opts.backwards === true) {
|
2244 | elements = $.extend(true, [], elements).reverse();
|
2245 | }
|
2246 |
|
2247 | /* Individually trigger the redirect for each element in the set to prevent users from having to handle iteration logic in their redirect. */
|
2248 | $.each(elements, function(elementIndex, element) {
|
2249 | /* If the stagger option was passed in, successively delay each element by the stagger value (in ms). Retain the original delay value. */
|
2250 | if (parseFloat(opts.stagger)) {
|
2251 | opts.delay = delayOriginal + (parseFloat(opts.stagger) * elementIndex);
|
2252 | } else if (Type.isFunction(opts.stagger)) {
|
2253 | opts.delay = delayOriginal + opts.stagger.call(element, elementIndex, elementsLength);
|
2254 | }
|
2255 |
|
2256 | /* If the drag option was passed in, successively increase/decrease (depending on the presense of opts.backwards)
|
2257 | the duration of each element's animation, using floors to prevent producing very short durations. */
|
2258 | if (opts.drag) {
|
2259 | /* Default the duration of UI pack effects (callouts and transitions) to 1000ms instead of the usual default duration of 400ms. */
|
2260 | opts.duration = parseFloat(durationOriginal) || (/^(callout|transition)/.test(propertiesMap) ? 1000 : DURATION_DEFAULT);
|
2261 |
|
2262 | /* For each element, take the greater duration of: A) animation completion percentage relative to the original duration,
|
2263 | B) 75% of the original duration, or C) a 200ms fallback (in case duration is already set to a low value).
|
2264 | The end result is a baseline of 75% of the redirect's duration that increases/decreases as the end of the element set is approached. */
|
2265 | opts.duration = Math.max(opts.duration * (opts.backwards ? 1 - elementIndex/elementsLength : (elementIndex + 1) / elementsLength), opts.duration * 0.75, 200);
|
2266 | }
|
2267 |
|
2268 | /* Pass in the call's opts object so that the redirect can optionally extend it. It defaults to an empty object instead of null to
|
2269 | reduce the opts checking logic required inside the redirect. */
|
2270 | Velocity.Redirects[propertiesMap].call(element, element, opts || {}, elementIndex, elementsLength, elements, promiseData.promise ? promiseData : undefined);
|
2271 | });
|
2272 |
|
2273 | /* Since the animation logic resides within the redirect's own code, abort the remainder of this call.
|
2274 | (The performance overhead up to this point is virtually non-existant.) */
|
2275 | /* Note: The jQuery call chain is kept intact by returning the complete element set. */
|
2276 | return getChain();
|
2277 | } else {
|
2278 | var abortError = "Velocity: First argument (" + propertiesMap + ") was not a property map, a known action, or a registered redirect. Aborting.";
|
2279 |
|
2280 | if (promiseData.promise) {
|
2281 | promiseData.rejecter(new Error(abortError));
|
2282 | } else {
|
2283 | console.log(abortError);
|
2284 | }
|
2285 |
|
2286 | return getChain();
|
2287 | }
|
2288 | }
|
2289 |
|
2290 | /**************************
|
2291 | Call-Wide Variables
|
2292 | **************************/
|
2293 |
|
2294 | /* A container for CSS unit conversion ratios (e.g. %, rem, and em ==> px) that is used to cache ratios across all elements
|
2295 | being animated in a single Velocity call. Calculating unit ratios necessitates DOM querying and updating, and is therefore
|
2296 | avoided (via caching) wherever possible. This container is call-wide instead of page-wide to avoid the risk of using stale
|
2297 | conversion metrics across Velocity animations that are not immediately consecutively chained. */
|
2298 | var callUnitConversionData = {
|
2299 | lastParent: null,
|
2300 | lastPosition: null,
|
2301 | lastFontSize: null,
|
2302 | lastPercentToPxWidth: null,
|
2303 | lastPercentToPxHeight: null,
|
2304 | lastEmToPx: null,
|
2305 | remToPx: null,
|
2306 | vwToPx: null,
|
2307 | vhToPx: null
|
2308 | };
|
2309 |
|
2310 | /* A container for all the ensuing tween data and metadata associated with this call. This container gets pushed to the page-wide
|
2311 | Velocity.State.calls array that is processed during animation ticking. */
|
2312 | var call = [];
|
2313 |
|
2314 | /************************
|
2315 | Element Processing
|
2316 | ************************/
|
2317 |
|
2318 | /* Element processing consists of three parts -- data processing that cannot go stale and data processing that *can* go stale (i.e. third-party style modifications):
|
2319 | 1) Pre-Queueing: Element-wide variables, including the element's data storage, are instantiated. Call options are prepared. If triggered, the Stop action is executed.
|
2320 | 2) Queueing: The logic that runs once this call has reached its point of execution in the element's $.queue() stack. Most logic is placed here to avoid risking it becoming stale.
|
2321 | 3) Pushing: Consolidation of the tween data followed by its push onto the global in-progress calls container.
|
2322 | */
|
2323 |
|
2324 | function processElement () {
|
2325 |
|
2326 | /*************************
|
2327 | Part I: Pre-Queueing
|
2328 | *************************/
|
2329 |
|
2330 | /***************************
|
2331 | Element-Wide Variables
|
2332 | ***************************/
|
2333 |
|
2334 | var element = this,
|
2335 | /* The runtime opts object is the extension of the current call's options and Velocity's page-wide option defaults. */
|
2336 | opts = $.extend({}, Velocity.defaults, options),
|
2337 | /* A container for the processed data associated with each property in the propertyMap.
|
2338 | (Each property in the map produces its own "tween".) */
|
2339 | tweensContainer = {},
|
2340 | elementUnitConversionData;
|
2341 |
|
2342 | /******************
|
2343 | Element Init
|
2344 | ******************/
|
2345 |
|
2346 | if (Data(element) === undefined) {
|
2347 | Velocity.init(element);
|
2348 | }
|
2349 |
|
2350 | /******************
|
2351 | Option: Delay
|
2352 | ******************/
|
2353 |
|
2354 | /* Since queue:false doesn't respect the item's existing queue, we avoid injecting its delay here (it's set later on). */
|
2355 | /* Note: Velocity rolls its own delay function since jQuery doesn't have a utility alias for $.fn.delay()
|
2356 | (and thus requires jQuery element creation, which we avoid since its overhead includes DOM querying). */
|
2357 | if (parseFloat(opts.delay) && opts.queue !== false) {
|
2358 | $.queue(element, opts.queue, function(next) {
|
2359 | /* This is a flag used to indicate to the upcoming completeCall() function that this queue entry was initiated by Velocity. See completeCall() for further details. */
|
2360 | Velocity.velocityQueueEntryFlag = true;
|
2361 |
|
2362 | /* The ensuing queue item (which is assigned to the "next" argument that $.queue() automatically passes in) will be triggered after a setTimeout delay.
|
2363 | The setTimeout is stored so that it can be subjected to clearTimeout() if this animation is prematurely stopped via Velocity's "stop" command. */
|
2364 | Data(element).delayTimer = {
|
2365 | setTimeout: setTimeout(next, parseFloat(opts.delay)),
|
2366 | next: next
|
2367 | };
|
2368 | });
|
2369 | }
|
2370 |
|
2371 | /*********************
|
2372 | Option: Duration
|
2373 | *********************/
|
2374 |
|
2375 | /* Support for jQuery's named durations. */
|
2376 | switch (opts.duration.toString().toLowerCase()) {
|
2377 | case "fast":
|
2378 | opts.duration = 200;
|
2379 | break;
|
2380 |
|
2381 | case "normal":
|
2382 | opts.duration = DURATION_DEFAULT;
|
2383 | break;
|
2384 |
|
2385 | case "slow":
|
2386 | opts.duration = 600;
|
2387 | break;
|
2388 |
|
2389 | default:
|
2390 | /* Remove the potential "ms" suffix and default to 1 if the user is attempting to set a duration of 0 (in order to produce an immediate style change). */
|
2391 | opts.duration = parseFloat(opts.duration) || 1;
|
2392 | }
|
2393 |
|
2394 | /************************
|
2395 | Global Option: Mock
|
2396 | ************************/
|
2397 |
|
2398 | if (Velocity.mock !== false) {
|
2399 | /* In mock mode, all animations are forced to 1ms so that they occur immediately upon the next rAF tick.
|
2400 | Alternatively, a multiplier can be passed in to time remap all delays and durations. */
|
2401 | if (Velocity.mock === true) {
|
2402 | opts.duration = opts.delay = 1;
|
2403 | } else {
|
2404 | opts.duration *= parseFloat(Velocity.mock) || 1;
|
2405 | opts.delay *= parseFloat(Velocity.mock) || 1;
|
2406 | }
|
2407 | }
|
2408 |
|
2409 | /*******************
|
2410 | Option: Easing
|
2411 | *******************/
|
2412 |
|
2413 | opts.easing = getEasing(opts.easing, opts.duration);
|
2414 |
|
2415 | /**********************
|
2416 | Option: Callbacks
|
2417 | **********************/
|
2418 |
|
2419 | /* Callbacks must functions. Otherwise, default to null. */
|
2420 | if (opts.begin && !Type.isFunction(opts.begin)) {
|
2421 | opts.begin = null;
|
2422 | }
|
2423 |
|
2424 | if (opts.progress && !Type.isFunction(opts.progress)) {
|
2425 | opts.progress = null;
|
2426 | }
|
2427 |
|
2428 | if (opts.complete && !Type.isFunction(opts.complete)) {
|
2429 | opts.complete = null;
|
2430 | }
|
2431 |
|
2432 | /*********************************
|
2433 | Option: Display & Visibility
|
2434 | *********************************/
|
2435 |
|
2436 | /* Refer to Velocity's documentation (VelocityJS.org/#displayAndVisibility) for a description of the display and visibility options' behavior. */
|
2437 | /* Note: We strictly check for undefined instead of falsiness because display accepts an empty string value. */
|
2438 | if (opts.display !== undefined && opts.display !== null) {
|
2439 | opts.display = opts.display.toString().toLowerCase();
|
2440 |
|
2441 | /* Users can pass in a special "auto" value to instruct Velocity to set the element to its default display value. */
|
2442 | if (opts.display === "auto") {
|
2443 | opts.display = Velocity.CSS.Values.getDisplayType(element);
|
2444 | }
|
2445 | }
|
2446 |
|
2447 | if (opts.visibility !== undefined && opts.visibility !== null) {
|
2448 | opts.visibility = opts.visibility.toString().toLowerCase();
|
2449 | }
|
2450 |
|
2451 | /**********************
|
2452 | Option: mobileHA
|
2453 | **********************/
|
2454 |
|
2455 | /* When set to true, and if this is a mobile device, mobileHA automatically enables hardware acceleration (via a null transform hack)
|
2456 | on animating elements. HA is removed from the element at the completion of its animation. */
|
2457 | /* Note: Android Gingerbread doesn't support HA. If a null transform hack (mobileHA) is in fact set, it will prevent other tranform subproperties from taking effect. */
|
2458 | /* Note: You can read more about the use of mobileHA in Velocity's documentation: VelocityJS.org/#mobileHA. */
|
2459 | opts.mobileHA = (opts.mobileHA && Velocity.State.isMobile && !Velocity.State.isGingerbread);
|
2460 |
|
2461 | /***********************
|
2462 | Part II: Queueing
|
2463 | ***********************/
|
2464 |
|
2465 | /* When a set of elements is targeted by a Velocity call, the set is broken up and each element has the current Velocity call individually queued onto it.
|
2466 | In this way, each element's existing queue is respected; some elements may already be animating and accordingly should not have this current Velocity call triggered immediately. */
|
2467 | /* In each queue, tween data is processed for each animating property then pushed onto the call-wide calls array. When the last element in the set has had its tweens processed,
|
2468 | the call array is pushed to Velocity.State.calls for live processing by the requestAnimationFrame tick. */
|
2469 | function buildQueue (next) {
|
2470 |
|
2471 | /*******************
|
2472 | Option: Begin
|
2473 | *******************/
|
2474 |
|
2475 | /* The begin callback is fired once per call -- not once per elemenet -- and is passed the full raw DOM element set as both its context and its first argument. */
|
2476 | if (opts.begin && elementsIndex === 0) {
|
2477 | /* We throw callbacks in a setTimeout so that thrown errors don't halt the execution of Velocity itself. */
|
2478 | try {
|
2479 | opts.begin.call(elements, elements);
|
2480 | } catch (error) {
|
2481 | setTimeout(function() { throw error; }, 1);
|
2482 | }
|
2483 | }
|
2484 |
|
2485 | /*****************************************
|
2486 | Tween Data Construction (for Scroll)
|
2487 | *****************************************/
|
2488 |
|
2489 | /* Note: In order to be subjected to chaining and animation options, scroll's tweening is routed through Velocity as if it were a standard CSS property animation. */
|
2490 | if (action === "scroll") {
|
2491 | /* The scroll action uniquely takes an optional "offset" option -- specified in pixels -- that offsets the targeted scroll position. */
|
2492 | var scrollDirection = (/^x$/i.test(opts.axis) ? "Left" : "Top"),
|
2493 | scrollOffset = parseFloat(opts.offset) || 0,
|
2494 | scrollPositionCurrent,
|
2495 | scrollPositionCurrentAlternate,
|
2496 | scrollPositionEnd;
|
2497 |
|
2498 | /* Scroll also uniquely takes an optional "container" option, which indicates the parent element that should be scrolled --
|
2499 | as opposed to the browser window itself. This is useful for scrolling toward an element that's inside an overflowing parent element. */
|
2500 | if (opts.container) {
|
2501 | /* Ensure that either a jQuery object or a raw DOM element was passed in. */
|
2502 | if (Type.isWrapped(opts.container) || Type.isNode(opts.container)) {
|
2503 | /* Extract the raw DOM element from the jQuery wrapper. */
|
2504 | opts.container = opts.container[0] || opts.container;
|
2505 | /* Note: Unlike other properties in Velocity, the browser's scroll position is never cached since it so frequently changes
|
2506 | (due to the user's natural interaction with the page). */
|
2507 | scrollPositionCurrent = opts.container["scroll" + scrollDirection]; /* GET */
|
2508 |
|
2509 | /* $.position() values are relative to the container's currently viewable area (without taking into account the container's true dimensions
|
2510 | -- say, for example, if the container was not overflowing). Thus, the scroll end value is the sum of the child element's position *and*
|
2511 | the scroll container's current scroll position. */
|
2512 | /* Note: jQuery does not offer a utility alias for $.position(), so we have to incur jQuery object conversion here.
|
2513 | This syncs up with an ensuing batch of GETs, so it fortunately does not trigger layout thrashing. */
|
2514 | scrollPositionEnd = (scrollPositionCurrent + $(element).position()[scrollDirection.toLowerCase()]) + scrollOffset; /* GET */
|
2515 | /* If a value other than a jQuery object or a raw DOM element was passed in, default to null so that this option is ignored. */
|
2516 | } else {
|
2517 | opts.container = null;
|
2518 | }
|
2519 | } else {
|
2520 | /* If the window itself is being scrolled -- not a containing element -- perform a live scroll position lookup using
|
2521 | the appropriate cached property names (which differ based on browser type). */
|
2522 | scrollPositionCurrent = Velocity.State.scrollAnchor[Velocity.State["scrollProperty" + scrollDirection]]; /* GET */
|
2523 | /* When scrolling the browser window, cache the alternate axis's current value since window.scrollTo() doesn't let us change only one value at a time. */
|
2524 | scrollPositionCurrentAlternate = Velocity.State.scrollAnchor[Velocity.State["scrollProperty" + (scrollDirection === "Left" ? "Top" : "Left")]]; /* GET */
|
2525 |
|
2526 | /* Unlike $.position(), $.offset() values are relative to the browser window's true dimensions -- not merely its currently viewable area --
|
2527 | and therefore end values do not need to be compounded onto current values. */
|
2528 | scrollPositionEnd = $(element).offset()[scrollDirection.toLowerCase()] + scrollOffset; /* GET */
|
2529 | }
|
2530 |
|
2531 | /* Since there's only one format that scroll's associated tweensContainer can take, we create it manually. */
|
2532 | tweensContainer = {
|
2533 | scroll: {
|
2534 | rootPropertyValue: false,
|
2535 | startValue: scrollPositionCurrent,
|
2536 | currentValue: scrollPositionCurrent,
|
2537 | endValue: scrollPositionEnd,
|
2538 | unitType: "",
|
2539 | easing: opts.easing,
|
2540 | scrollData: {
|
2541 | container: opts.container,
|
2542 | direction: scrollDirection,
|
2543 | alternateValue: scrollPositionCurrentAlternate
|
2544 | }
|
2545 | },
|
2546 | element: element
|
2547 | };
|
2548 |
|
2549 | if (Velocity.debug) console.log("tweensContainer (scroll): ", tweensContainer.scroll, element);
|
2550 |
|
2551 | /******************************************
|
2552 | Tween Data Construction (for Reverse)
|
2553 | ******************************************/
|
2554 |
|
2555 | /* Reverse acts like a "start" action in that a property map is animated toward. The only difference is
|
2556 | that the property map used for reverse is the inverse of the map used in the previous call. Thus, we manipulate
|
2557 | the previous call to construct our new map: use the previous map's end values as our new map's start values. Copy over all other data. */
|
2558 | /* Note: Reverse can be directly called via the "reverse" parameter, or it can be indirectly triggered via the loop option. (Loops are composed of multiple reverses.) */
|
2559 | /* Note: Reverse calls do not need to be consecutively chained onto a currently-animating element in order to operate on cached values;
|
2560 | there is no harm to reverse being called on a potentially stale data cache since reverse's behavior is simply defined
|
2561 | as reverting to the element's values as they were prior to the previous *Velocity* call. */
|
2562 | } else if (action === "reverse") {
|
2563 | /* Abort if there is no prior animation data to reverse to. */
|
2564 | if (!Data(element).tweensContainer) {
|
2565 | /* Dequeue the element so that this queue entry releases itself immediately, allowing subsequent queue entries to run. */
|
2566 | $.dequeue(element, opts.queue);
|
2567 |
|
2568 | return;
|
2569 | } else {
|
2570 | /*********************
|
2571 | Options Parsing
|
2572 | *********************/
|
2573 |
|
2574 | /* If the element was hidden via the display option in the previous call,
|
2575 | revert display to "auto" prior to reversal so that the element is visible again. */
|
2576 | if (Data(element).opts.display === "none") {
|
2577 | Data(element).opts.display = "auto";
|
2578 | }
|
2579 |
|
2580 | if (Data(element).opts.visibility === "hidden") {
|
2581 | Data(element).opts.visibility = "visible";
|
2582 | }
|
2583 |
|
2584 | /* If the loop option was set in the previous call, disable it so that "reverse" calls aren't recursively generated.
|
2585 | Further, remove the previous call's callback options; typically, users do not want these to be refired. */
|
2586 | Data(element).opts.loop = false;
|
2587 | Data(element).opts.begin = null;
|
2588 | Data(element).opts.complete = null;
|
2589 |
|
2590 | /* Since we're extending an opts object that has already been extended with the defaults options object,
|
2591 | we remove non-explicitly-defined properties that are auto-assigned values. */
|
2592 | if (!options.easing) {
|
2593 | delete opts.easing;
|
2594 | }
|
2595 |
|
2596 | if (!options.duration) {
|
2597 | delete opts.duration;
|
2598 | }
|
2599 |
|
2600 | /* The opts object used for reversal is an extension of the options object optionally passed into this
|
2601 | reverse call plus the options used in the previous Velocity call. */
|
2602 | opts = $.extend({}, Data(element).opts, opts);
|
2603 |
|
2604 | /*************************************
|
2605 | Tweens Container Reconstruction
|
2606 | *************************************/
|
2607 |
|
2608 | /* Create a deepy copy (indicated via the true flag) of the previous call's tweensContainer. */
|
2609 | var lastTweensContainer = $.extend(true, {}, Data(element).tweensContainer);
|
2610 |
|
2611 | /* Manipulate the previous tweensContainer by replacing its end values and currentValues with its start values. */
|
2612 | for (var lastTween in lastTweensContainer) {
|
2613 | /* In addition to tween data, tweensContainers contain an element property that we ignore here. */
|
2614 | if (lastTween !== "element") {
|
2615 | var lastStartValue = lastTweensContainer[lastTween].startValue;
|
2616 |
|
2617 | lastTweensContainer[lastTween].startValue = lastTweensContainer[lastTween].currentValue = lastTweensContainer[lastTween].endValue;
|
2618 | lastTweensContainer[lastTween].endValue = lastStartValue;
|
2619 |
|
2620 | /* Easing is the only option that embeds into the individual tween data (since it can be defined on a per-property basis).
|
2621 | Accordingly, every property's easing value must be updated when an options object is passed in with a reverse call.
|
2622 | The side effect of this extensibility is that all per-property easing values are forcefully reset to the new value. */
|
2623 | if (!Type.isEmptyObject(options)) {
|
2624 | lastTweensContainer[lastTween].easing = opts.easing;
|
2625 | }
|
2626 |
|
2627 | if (Velocity.debug) console.log("reverse tweensContainer (" + lastTween + "): " + JSON.stringify(lastTweensContainer[lastTween]), element);
|
2628 | }
|
2629 | }
|
2630 |
|
2631 | tweensContainer = lastTweensContainer;
|
2632 | }
|
2633 |
|
2634 | /*****************************************
|
2635 | Tween Data Construction (for Start)
|
2636 | *****************************************/
|
2637 |
|
2638 | } else if (action === "start") {
|
2639 |
|
2640 | /*************************
|
2641 | Value Transferring
|
2642 | *************************/
|
2643 |
|
2644 | /* If this queue entry follows a previous Velocity-initiated queue entry *and* if this entry was created
|
2645 | while the element was in the process of being animated by Velocity, then this current call is safe to use
|
2646 | the end values from the prior call as its start values. Velocity attempts to perform this value transfer
|
2647 | process whenever possible in order to avoid requerying the DOM. */
|
2648 | /* If values aren't transferred from a prior call and start values were not forcefed by the user (more on this below),
|
2649 | then the DOM is queried for the element's current values as a last resort. */
|
2650 | /* Note: Conversely, animation reversal (and looping) *always* perform inter-call value transfers; they never requery the DOM. */
|
2651 | var lastTweensContainer;
|
2652 |
|
2653 | /* The per-element isAnimating flag is used to indicate whether it's safe (i.e. the data isn't stale)
|
2654 | to transfer over end values to use as start values. If it's set to true and there is a previous
|
2655 | Velocity call to pull values from, do so. */
|
2656 | if (Data(element).tweensContainer && Data(element).isAnimating === true) {
|
2657 | lastTweensContainer = Data(element).tweensContainer;
|
2658 | }
|
2659 |
|
2660 | /***************************
|
2661 | Tween Data Calculation
|
2662 | ***************************/
|
2663 |
|
2664 | /* This function parses property data and defaults endValue, easing, and startValue as appropriate. */
|
2665 | /* Property map values can either take the form of 1) a single value representing the end value,
|
2666 | or 2) an array in the form of [ endValue, [, easing] [, startValue] ].
|
2667 | The optional third parameter is a forcefed startValue to be used instead of querying the DOM for
|
2668 | the element's current value. Read Velocity's docmentation to learn more about forcefeeding: VelocityJS.org/#forcefeeding */
|
2669 | function parsePropertyValue (valueData, skipResolvingEasing) {
|
2670 | var endValue = undefined,
|
2671 | easing = undefined,
|
2672 | startValue = undefined;
|
2673 |
|
2674 | /* Handle the array format, which can be structured as one of three potential overloads:
|
2675 | A) [ endValue, easing, startValue ], B) [ endValue, easing ], or C) [ endValue, startValue ] */
|
2676 | if (Type.isArray(valueData)) {
|
2677 | /* endValue is always the first item in the array. Don't bother validating endValue's value now
|
2678 | since the ensuing property cycling logic does that. */
|
2679 | endValue = valueData[0];
|
2680 |
|
2681 | /* Two-item array format: If the second item is a number, function, or hex string, treat it as a
|
2682 | start value since easings can only be non-hex strings or arrays. */
|
2683 | if ((!Type.isArray(valueData[1]) && /^[\d-]/.test(valueData[1])) || Type.isFunction(valueData[1]) || CSS.RegEx.isHex.test(valueData[1])) {
|
2684 | startValue = valueData[1];
|
2685 | /* Two or three-item array: If the second item is a non-hex string or an array, treat it as an easing. */
|
2686 | } else if ((Type.isString(valueData[1]) && !CSS.RegEx.isHex.test(valueData[1])) || Type.isArray(valueData[1])) {
|
2687 | easing = skipResolvingEasing ? valueData[1] : getEasing(valueData[1], opts.duration);
|
2688 |
|
2689 | /* Don't bother validating startValue's value now since the ensuing property cycling logic inherently does that. */
|
2690 | if (valueData[2] !== undefined) {
|
2691 | startValue = valueData[2];
|
2692 | }
|
2693 | }
|
2694 | /* Handle the single-value format. */
|
2695 | } else {
|
2696 | endValue = valueData;
|
2697 | }
|
2698 |
|
2699 | /* Default to the call's easing if a per-property easing type was not defined. */
|
2700 | if (!skipResolvingEasing) {
|
2701 | easing = easing || opts.easing;
|
2702 | }
|
2703 |
|
2704 | /* If functions were passed in as values, pass the function the current element as its context,
|
2705 | plus the element's index and the element set's size as arguments. Then, assign the returned value. */
|
2706 | if (Type.isFunction(endValue)) {
|
2707 | endValue = endValue.call(element, elementsIndex, elementsLength);
|
2708 | }
|
2709 |
|
2710 | if (Type.isFunction(startValue)) {
|
2711 | startValue = startValue.call(element, elementsIndex, elementsLength);
|
2712 | }
|
2713 |
|
2714 | /* Allow startValue to be left as undefined to indicate to the ensuing code that its value was not forcefed. */
|
2715 | return [ endValue || 0, easing, startValue ];
|
2716 | }
|
2717 |
|
2718 | /* Cycle through each property in the map, looking for shorthand color properties (e.g. "color" as opposed to "colorRed"). Inject the corresponding
|
2719 | colorRed, colorGreen, and colorBlue RGB component tweens into the propertiesMap (which Velocity understands) and remove the shorthand property. */
|
2720 | $.each(propertiesMap, function(property, value) {
|
2721 | /* Find shorthand color properties that have been passed a hex string. */
|
2722 | if (RegExp("^" + CSS.Lists.colors.join("$|^") + "$").test(property)) {
|
2723 | /* Parse the value data for each shorthand. */
|
2724 | var valueData = parsePropertyValue(value, true),
|
2725 | endValue = valueData[0],
|
2726 | easing = valueData[1],
|
2727 | startValue = valueData[2];
|
2728 |
|
2729 | if (CSS.RegEx.isHex.test(endValue)) {
|
2730 | /* Convert the hex strings into their RGB component arrays. */
|
2731 | var colorComponents = [ "Red", "Green", "Blue" ],
|
2732 | endValueRGB = CSS.Values.hexToRgb(endValue),
|
2733 | startValueRGB = startValue ? CSS.Values.hexToRgb(startValue) : undefined;
|
2734 |
|
2735 | /* Inject the RGB component tweens into propertiesMap. */
|
2736 | for (var i = 0; i < colorComponents.length; i++) {
|
2737 | var dataArray = [ endValueRGB[i] ];
|
2738 |
|
2739 | if (easing) {
|
2740 | dataArray.push(easing);
|
2741 | }
|
2742 |
|
2743 | if (startValueRGB !== undefined) {
|
2744 | dataArray.push(startValueRGB[i]);
|
2745 | }
|
2746 |
|
2747 | propertiesMap[property + colorComponents[i]] = dataArray;
|
2748 | }
|
2749 |
|
2750 | /* Remove the intermediary shorthand property entry now that we've processed it. */
|
2751 | delete propertiesMap[property];
|
2752 | }
|
2753 | }
|
2754 | });
|
2755 |
|
2756 | /* Create a tween out of each property, and append its associated data to tweensContainer. */
|
2757 | for (var property in propertiesMap) {
|
2758 |
|
2759 | /**************************
|
2760 | Start Value Sourcing
|
2761 | **************************/
|
2762 |
|
2763 | /* Parse out endValue, easing, and startValue from the property's data. */
|
2764 | var valueData = parsePropertyValue(propertiesMap[property]),
|
2765 | endValue = valueData[0],
|
2766 | easing = valueData[1],
|
2767 | startValue = valueData[2];
|
2768 |
|
2769 | /* Now that the original property name's format has been used for the parsePropertyValue() lookup above,
|
2770 | we force the property to its camelCase styling to normalize it for manipulation. */
|
2771 | property = CSS.Names.camelCase(property);
|
2772 |
|
2773 | /* In case this property is a hook, there are circumstances where we will intend to work on the hook's root property and not the hooked subproperty. */
|
2774 | var rootProperty = CSS.Hooks.getRoot(property),
|
2775 | rootPropertyValue = false;
|
2776 |
|
2777 | /* Properties that are not supported by the browser (and do not have an associated normalization) will
|
2778 | inherently produce no style changes when set, so they are skipped in order to decrease animation tick overhead.
|
2779 | Property support is determined via prefixCheck(), which returns a false flag when no supported is detected. */
|
2780 | /* Note: Since SVG elements have some of their properties directly applied as HTML attributes,
|
2781 | there is no way to check for their explicit browser support, and so we skip skip this check for them. */
|
2782 | if (!Data(element).isSVG && CSS.Names.prefixCheck(rootProperty)[1] === false && CSS.Normalizations.registered[rootProperty] === undefined) {
|
2783 | if (Velocity.debug) console.log("Skipping [" + rootProperty + "] due to a lack of browser support.");
|
2784 |
|
2785 | continue;
|
2786 | }
|
2787 |
|
2788 | /* If the display option is being set to a non-"none" (e.g. "block") and opacity (filter on IE<=8) is being
|
2789 | animated to an endValue of non-zero, the user's intention is to fade in from invisible, thus we forcefeed opacity
|
2790 | a startValue of 0 if its startValue hasn't already been sourced by value transferring or prior forcefeeding. */
|
2791 | if (((opts.display !== undefined && opts.display !== null && opts.display !== "none") || (opts.visibility !== undefined && opts.visibility !== "hidden")) && /opacity|filter/.test(property) && !startValue && endValue !== 0) {
|
2792 | startValue = 0;
|
2793 | }
|
2794 |
|
2795 | /* If values have been transferred from the previous Velocity call, extract the endValue and rootPropertyValue
|
2796 | for all of the current call's properties that were *also* animated in the previous call. */
|
2797 | /* Note: Value transferring can optionally be disabled by the user via the _cacheValues option. */
|
2798 | if (opts._cacheValues && lastTweensContainer && lastTweensContainer[property]) {
|
2799 | if (startValue === undefined) {
|
2800 | startValue = lastTweensContainer[property].endValue + lastTweensContainer[property].unitType;
|
2801 | }
|
2802 |
|
2803 | /* The previous call's rootPropertyValue is extracted from the element's data cache since that's the
|
2804 | instance of rootPropertyValue that gets freshly updated by the tweening process, whereas the rootPropertyValue
|
2805 | attached to the incoming lastTweensContainer is equal to the root property's value prior to any tweening. */
|
2806 | rootPropertyValue = Data(element).rootPropertyValueCache[rootProperty];
|
2807 | /* If values were not transferred from a previous Velocity call, query the DOM as needed. */
|
2808 | } else {
|
2809 | /* Handle hooked properties. */
|
2810 | if (CSS.Hooks.registered[property]) {
|
2811 | if (startValue === undefined) {
|
2812 | rootPropertyValue = CSS.getPropertyValue(element, rootProperty); /* GET */
|
2813 | /* Note: The following getPropertyValue() call does not actually trigger a DOM query;
|
2814 | getPropertyValue() will extract the hook from rootPropertyValue. */
|
2815 | startValue = CSS.getPropertyValue(element, property, rootPropertyValue);
|
2816 | /* If startValue is already defined via forcefeeding, do not query the DOM for the root property's value;
|
2817 | just grab rootProperty's zero-value template from CSS.Hooks. This overwrites the element's actual
|
2818 | root property value (if one is set), but this is acceptable since the primary reason users forcefeed is
|
2819 | to avoid DOM queries, and thus we likewise avoid querying the DOM for the root property's value. */
|
2820 | } else {
|
2821 | /* Grab this hook's zero-value template, e.g. "0px 0px 0px black". */
|
2822 | rootPropertyValue = CSS.Hooks.templates[rootProperty][1];
|
2823 | }
|
2824 | /* Handle non-hooked properties that haven't already been defined via forcefeeding. */
|
2825 | } else if (startValue === undefined) {
|
2826 | startValue = CSS.getPropertyValue(element, property); /* GET */
|
2827 | }
|
2828 | }
|
2829 |
|
2830 | /**************************
|
2831 | Value Data Extraction
|
2832 | **************************/
|
2833 |
|
2834 | var separatedValue,
|
2835 | endValueUnitType,
|
2836 | startValueUnitType,
|
2837 | operator = false;
|
2838 |
|
2839 | /* Separates a property value into its numeric value and its unit type. */
|
2840 | function separateValue (property, value) {
|
2841 | var unitType,
|
2842 | numericValue;
|
2843 |
|
2844 | numericValue = (value || "0")
|
2845 | .toString()
|
2846 | .toLowerCase()
|
2847 | /* Match the unit type at the end of the value. */
|
2848 | .replace(/[%A-z]+$/, function(match) {
|
2849 | /* Grab the unit type. */
|
2850 | unitType = match;
|
2851 |
|
2852 | /* Strip the unit type off of value. */
|
2853 | return "";
|
2854 | });
|
2855 |
|
2856 | /* If no unit type was supplied, assign one that is appropriate for this property (e.g. "deg" for rotateZ or "px" for width). */
|
2857 | if (!unitType) {
|
2858 | unitType = CSS.Values.getUnitType(property);
|
2859 | }
|
2860 |
|
2861 | return [ numericValue, unitType ];
|
2862 | }
|
2863 |
|
2864 | /* Separate startValue. */
|
2865 | separatedValue = separateValue(property, startValue);
|
2866 | startValue = separatedValue[0];
|
2867 | startValueUnitType = separatedValue[1];
|
2868 |
|
2869 | /* Separate endValue, and extract a value operator (e.g. "+=", "-=") if one exists. */
|
2870 | separatedValue = separateValue(property, endValue);
|
2871 | endValue = separatedValue[0].replace(/^([+-\/*])=/, function(match, subMatch) {
|
2872 | operator = subMatch;
|
2873 |
|
2874 | /* Strip the operator off of the value. */
|
2875 | return "";
|
2876 | });
|
2877 | endValueUnitType = separatedValue[1];
|
2878 |
|
2879 | /* Parse float values from endValue and startValue. Default to 0 if NaN is returned. */
|
2880 | startValue = parseFloat(startValue) || 0;
|
2881 | endValue = parseFloat(endValue) || 0;
|
2882 |
|
2883 | /***************************************
|
2884 | Property-Specific Value Conversion
|
2885 | ***************************************/
|
2886 |
|
2887 | /* Custom support for properties that don't actually accept the % unit type, but where pollyfilling is trivial and relatively foolproof. */
|
2888 | if (endValueUnitType === "%") {
|
2889 | /* A %-value fontSize/lineHeight is relative to the parent's fontSize (as opposed to the parent's dimensions),
|
2890 | which is identical to the em unit's behavior, so we piggyback off of that. */
|
2891 | if (/^(fontSize|lineHeight)$/.test(property)) {
|
2892 | /* Convert % into an em decimal value. */
|
2893 | endValue = endValue / 100;
|
2894 | endValueUnitType = "em";
|
2895 | /* For scaleX and scaleY, convert the value into its decimal format and strip off the unit type. */
|
2896 | } else if (/^scale/.test(property)) {
|
2897 | endValue = endValue / 100;
|
2898 | endValueUnitType = "";
|
2899 | /* For RGB components, take the defined percentage of 255 and strip off the unit type. */
|
2900 | } else if (/(Red|Green|Blue)$/i.test(property)) {
|
2901 | endValue = (endValue / 100) * 255;
|
2902 | endValueUnitType = "";
|
2903 | }
|
2904 | }
|
2905 |
|
2906 | /***************************
|
2907 | Unit Ratio Calculation
|
2908 | ***************************/
|
2909 |
|
2910 | /* When queried, the browser returns (most) CSS property values in pixels. Therefore, if an endValue with a unit type of
|
2911 | %, em, or rem is animated toward, startValue must be converted from pixels into the same unit type as endValue in order
|
2912 | for value manipulation logic (increment/decrement) to proceed. Further, if the startValue was forcefed or transferred
|
2913 | from a previous call, startValue may also not be in pixels. Unit conversion logic therefore consists of two steps:
|
2914 | 1) Calculating the ratio of %/em/rem/vh/vw relative to pixels
|
2915 | 2) Converting startValue into the same unit of measurement as endValue based on these ratios. */
|
2916 | /* Unit conversion ratios are calculated by inserting a sibling node next to the target node, copying over its position property,
|
2917 | setting values with the target unit type then comparing the returned pixel value. */
|
2918 | /* Note: Even if only one of these unit types is being animated, all unit ratios are calculated at once since the overhead
|
2919 | of batching the SETs and GETs together upfront outweights the potential overhead
|
2920 | of layout thrashing caused by re-querying for uncalculated ratios for subsequently-processed properties. */
|
2921 | /* Todo: Shift this logic into the calls' first tick instance so that it's synced with RAF. */
|
2922 | function calculateUnitRatios () {
|
2923 |
|
2924 | /************************
|
2925 | Same Ratio Checks
|
2926 | ************************/
|
2927 |
|
2928 | /* The properties below are used to determine whether the element differs sufficiently from this call's
|
2929 | previously iterated element to also differ in its unit conversion ratios. If the properties match up with those
|
2930 | of the prior element, the prior element's conversion ratios are used. Like most optimizations in Velocity,
|
2931 | this is done to minimize DOM querying. */
|
2932 | var sameRatioIndicators = {
|
2933 | myParent: element.parentNode || document.body, /* GET */
|
2934 | position: CSS.getPropertyValue(element, "position"), /* GET */
|
2935 | fontSize: CSS.getPropertyValue(element, "fontSize") /* GET */
|
2936 | },
|
2937 | /* Determine if the same % ratio can be used. % is based on the element's position value and its parent's width and height dimensions. */
|
2938 | samePercentRatio = ((sameRatioIndicators.position === callUnitConversionData.lastPosition) && (sameRatioIndicators.myParent === callUnitConversionData.lastParent)),
|
2939 | /* Determine if the same em ratio can be used. em is relative to the element's fontSize. */
|
2940 | sameEmRatio = (sameRatioIndicators.fontSize === callUnitConversionData.lastFontSize);
|
2941 |
|
2942 | /* Store these ratio indicators call-wide for the next element to compare against. */
|
2943 | callUnitConversionData.lastParent = sameRatioIndicators.myParent;
|
2944 | callUnitConversionData.lastPosition = sameRatioIndicators.position;
|
2945 | callUnitConversionData.lastFontSize = sameRatioIndicators.fontSize;
|
2946 |
|
2947 | /***************************
|
2948 | Element-Specific Units
|
2949 | ***************************/
|
2950 |
|
2951 | /* Note: IE8 rounds to the nearest pixel when returning CSS values, thus we perform conversions using a measurement
|
2952 | of 100 (instead of 1) to give our ratios a precision of at least 2 decimal values. */
|
2953 | var measurement = 100,
|
2954 | unitRatios = {};
|
2955 |
|
2956 | if (!sameEmRatio || !samePercentRatio) {
|
2957 | var dummy = Data(element).isSVG ? document.createElementNS("http://www.w3.org/2000/svg", "rect") : document.createElement("div");
|
2958 |
|
2959 | Velocity.init(dummy);
|
2960 | sameRatioIndicators.myParent.appendChild(dummy);
|
2961 |
|
2962 | /* To accurately and consistently calculate conversion ratios, the element's cascaded overflow and box-sizing are stripped.
|
2963 | Similarly, since width/height can be artificially constrained by their min-/max- equivalents, these are controlled for as well. */
|
2964 | /* Note: Overflow must be also be controlled for per-axis since the overflow property overwrites its per-axis values. */
|
2965 | $.each([ "overflow", "overflowX", "overflowY" ], function(i, property) {
|
2966 | Velocity.CSS.setPropertyValue(dummy, property, "hidden");
|
2967 | });
|
2968 | Velocity.CSS.setPropertyValue(dummy, "position", sameRatioIndicators.position);
|
2969 | Velocity.CSS.setPropertyValue(dummy, "fontSize", sameRatioIndicators.fontSize);
|
2970 | Velocity.CSS.setPropertyValue(dummy, "boxSizing", "content-box");
|
2971 |
|
2972 | /* width and height act as our proxy properties for measuring the horizontal and vertical % ratios. */
|
2973 | $.each([ "minWidth", "maxWidth", "width", "minHeight", "maxHeight", "height" ], function(i, property) {
|
2974 | Velocity.CSS.setPropertyValue(dummy, property, measurement + "%");
|
2975 | });
|
2976 | /* paddingLeft arbitrarily acts as our proxy property for the em ratio. */
|
2977 | Velocity.CSS.setPropertyValue(dummy, "paddingLeft", measurement + "em");
|
2978 |
|
2979 | /* Divide the returned value by the measurement to get the ratio between 1% and 1px. Default to 1 since working with 0 can produce Infinite. */
|
2980 | unitRatios.percentToPxWidth = callUnitConversionData.lastPercentToPxWidth = (parseFloat(CSS.getPropertyValue(dummy, "width", null, true)) || 1) / measurement; /* GET */
|
2981 | unitRatios.percentToPxHeight = callUnitConversionData.lastPercentToPxHeight = (parseFloat(CSS.getPropertyValue(dummy, "height", null, true)) || 1) / measurement; /* GET */
|
2982 | unitRatios.emToPx = callUnitConversionData.lastEmToPx = (parseFloat(CSS.getPropertyValue(dummy, "paddingLeft")) || 1) / measurement; /* GET */
|
2983 |
|
2984 | sameRatioIndicators.myParent.removeChild(dummy);
|
2985 | } else {
|
2986 | unitRatios.emToPx = callUnitConversionData.lastEmToPx;
|
2987 | unitRatios.percentToPxWidth = callUnitConversionData.lastPercentToPxWidth;
|
2988 | unitRatios.percentToPxHeight = callUnitConversionData.lastPercentToPxHeight;
|
2989 | }
|
2990 |
|
2991 | /***************************
|
2992 | Element-Agnostic Units
|
2993 | ***************************/
|
2994 |
|
2995 | /* Whereas % and em ratios are determined on a per-element basis, the rem unit only needs to be checked
|
2996 | once per call since it's exclusively dependant upon document.body's fontSize. If this is the first time
|
2997 | that calculateUnitRatios() is being run during this call, remToPx will still be set to its default value of null,
|
2998 | so we calculate it now. */
|
2999 | if (callUnitConversionData.remToPx === null) {
|
3000 | /* Default to browsers' default fontSize of 16px in the case of 0. */
|
3001 | callUnitConversionData.remToPx = parseFloat(CSS.getPropertyValue(document.body, "fontSize")) || 16; /* GET */
|
3002 | }
|
3003 |
|
3004 | /* Similarly, viewport units are %-relative to the window's inner dimensions. */
|
3005 | if (callUnitConversionData.vwToPx === null) {
|
3006 | callUnitConversionData.vwToPx = parseFloat(window.innerWidth) / 100; /* GET */
|
3007 | callUnitConversionData.vhToPx = parseFloat(window.innerHeight) / 100; /* GET */
|
3008 | }
|
3009 |
|
3010 | unitRatios.remToPx = callUnitConversionData.remToPx;
|
3011 | unitRatios.vwToPx = callUnitConversionData.vwToPx;
|
3012 | unitRatios.vhToPx = callUnitConversionData.vhToPx;
|
3013 |
|
3014 | if (Velocity.debug >= 1) console.log("Unit ratios: " + JSON.stringify(unitRatios), element);
|
3015 |
|
3016 | return unitRatios;
|
3017 | }
|
3018 |
|
3019 | /********************
|
3020 | Unit Conversion
|
3021 | ********************/
|
3022 |
|
3023 | /* The * and / operators, which are not passed in with an associated unit, inherently use startValue's unit. Skip value and unit conversion. */
|
3024 | if (/[\/*]/.test(operator)) {
|
3025 | endValueUnitType = startValueUnitType;
|
3026 | /* If startValue and endValue differ in unit type, convert startValue into the same unit type as endValue so that if endValueUnitType
|
3027 | is a relative unit (%, em, rem), the values set during tweening will continue to be accurately relative even if the metrics they depend
|
3028 | on are dynamically changing during the course of the animation. Conversely, if we always normalized into px and used px for setting values, the px ratio
|
3029 | would become stale if the original unit being animated toward was relative and the underlying metrics change during the animation. */
|
3030 | /* Since 0 is 0 in any unit type, no conversion is necessary when startValue is 0 -- we just start at 0 with endValueUnitType. */
|
3031 | } else if ((startValueUnitType !== endValueUnitType) && startValue !== 0) {
|
3032 | /* Unit conversion is also skipped when endValue is 0, but *startValueUnitType* must be used for tween values to remain accurate. */
|
3033 | /* Note: Skipping unit conversion here means that if endValueUnitType was originally a relative unit, the animation won't relatively
|
3034 | match the underlying metrics if they change, but this is acceptable since we're animating toward invisibility instead of toward visibility,
|
3035 | which remains past the point of the animation's completion. */
|
3036 | if (endValue === 0) {
|
3037 | endValueUnitType = startValueUnitType;
|
3038 | } else {
|
3039 | /* By this point, we cannot avoid unit conversion (it's undesirable since it causes layout thrashing).
|
3040 | If we haven't already, we trigger calculateUnitRatios(), which runs once per element per call. */
|
3041 | elementUnitConversionData = elementUnitConversionData || calculateUnitRatios();
|
3042 |
|
3043 | /* The following RegEx matches CSS properties that have their % values measured relative to the x-axis. */
|
3044 | /* Note: W3C spec mandates that all of margin and padding's properties (even top and bottom) are %-relative to the *width* of the parent element. */
|
3045 | var axis = (/margin|padding|left|right|width|text|word|letter/i.test(property) || /X$/.test(property) || property === "x") ? "x" : "y";
|
3046 |
|
3047 | /* In order to avoid generating n^2 bespoke conversion functions, unit conversion is a two-step process:
|
3048 | 1) Convert startValue into pixels. 2) Convert this new pixel value into endValue's unit type. */
|
3049 | switch (startValueUnitType) {
|
3050 | case "%":
|
3051 | /* Note: translateX and translateY are the only properties that are %-relative to an element's own dimensions -- not its parent's dimensions.
|
3052 | Velocity does not include a special conversion process to account for this behavior. Therefore, animating translateX/Y from a % value
|
3053 | to a non-% value will produce an incorrect start value. Fortunately, this sort of cross-unit conversion is rarely done by users in practice. */
|
3054 | startValue *= (axis === "x" ? elementUnitConversionData.percentToPxWidth : elementUnitConversionData.percentToPxHeight);
|
3055 | break;
|
3056 |
|
3057 | case "px":
|
3058 | /* px acts as our midpoint in the unit conversion process; do nothing. */
|
3059 | break;
|
3060 |
|
3061 | default:
|
3062 | startValue *= elementUnitConversionData[startValueUnitType + "ToPx"];
|
3063 | }
|
3064 |
|
3065 | /* Invert the px ratios to convert into to the target unit. */
|
3066 | switch (endValueUnitType) {
|
3067 | case "%":
|
3068 | startValue *= 1 / (axis === "x" ? elementUnitConversionData.percentToPxWidth : elementUnitConversionData.percentToPxHeight);
|
3069 | break;
|
3070 |
|
3071 | case "px":
|
3072 | /* startValue is already in px, do nothing; we're done. */
|
3073 | break;
|
3074 |
|
3075 | default:
|
3076 | startValue *= 1 / elementUnitConversionData[endValueUnitType + "ToPx"];
|
3077 | }
|
3078 | }
|
3079 | }
|
3080 |
|
3081 | /*********************
|
3082 | Relative Values
|
3083 | *********************/
|
3084 |
|
3085 | /* Operator logic must be performed last since it requires unit-normalized start and end values. */
|
3086 | /* Note: Relative *percent values* do not behave how most people think; while one would expect "+=50%"
|
3087 | to increase the property 1.5x its current value, it in fact increases the percent units in absolute terms:
|
3088 | 50 points is added on top of the current % value. */
|
3089 | switch (operator) {
|
3090 | case "+":
|
3091 | endValue = startValue + endValue;
|
3092 | break;
|
3093 |
|
3094 | case "-":
|
3095 | endValue = startValue - endValue;
|
3096 | break;
|
3097 |
|
3098 | case "*":
|
3099 | endValue = startValue * endValue;
|
3100 | break;
|
3101 |
|
3102 | case "/":
|
3103 | endValue = startValue / endValue;
|
3104 | break;
|
3105 | }
|
3106 |
|
3107 | /**************************
|
3108 | tweensContainer Push
|
3109 | **************************/
|
3110 |
|
3111 | /* Construct the per-property tween object, and push it to the element's tweensContainer. */
|
3112 | tweensContainer[property] = {
|
3113 | rootPropertyValue: rootPropertyValue,
|
3114 | startValue: startValue,
|
3115 | currentValue: startValue,
|
3116 | endValue: endValue,
|
3117 | unitType: endValueUnitType,
|
3118 | easing: easing
|
3119 | };
|
3120 |
|
3121 | if (Velocity.debug) console.log("tweensContainer (" + property + "): " + JSON.stringify(tweensContainer[property]), element);
|
3122 | }
|
3123 |
|
3124 | /* Along with its property data, store a reference to the element itself onto tweensContainer. */
|
3125 | tweensContainer.element = element;
|
3126 | }
|
3127 |
|
3128 | /*****************
|
3129 | Call Push
|
3130 | *****************/
|
3131 |
|
3132 | /* Note: tweensContainer can be empty if all of the properties in this call's property map were skipped due to not
|
3133 | being supported by the browser. The element property is used for checking that the tweensContainer has been appended to. */
|
3134 | if (tweensContainer.element) {
|
3135 | /* Apply the "velocity-animating" indicator class. */
|
3136 | CSS.Values.addClass(element, "velocity-animating");
|
3137 |
|
3138 | /* The call array houses the tweensContainers for each element being animated in the current call. */
|
3139 | call.push(tweensContainer);
|
3140 |
|
3141 | /* Store the tweensContainer and options if we're working on the default effects queue, so that they can be used by the reverse command. */
|
3142 | if (opts.queue === "") {
|
3143 | Data(element).tweensContainer = tweensContainer;
|
3144 | Data(element).opts = opts;
|
3145 | }
|
3146 |
|
3147 | /* Switch on the element's animating flag. */
|
3148 | Data(element).isAnimating = true;
|
3149 |
|
3150 | /* Once the final element in this call's element set has been processed, push the call array onto
|
3151 | Velocity.State.calls for the animation tick to immediately begin processing. */
|
3152 | if (elementsIndex === elementsLength - 1) {
|
3153 | /* To speed up iterating over this array, it is compacted (falsey items -- calls that have completed -- are removed)
|
3154 | when its length has ballooned to a point that can impact tick performance. This only becomes necessary when animation
|
3155 | has been continuous with many elements over a long period of time; whenever all active calls are completed, completeCall() clears Velocity.State.calls. */
|
3156 | if (Velocity.State.calls.length > 10000) {
|
3157 | Velocity.State.calls = compactSparseArray(Velocity.State.calls);
|
3158 | }
|
3159 |
|
3160 | /* Add the current call plus its associated metadata (the element set and the call's options) onto the global call container.
|
3161 | Anything on this call container is subjected to tick() processing. */
|
3162 | Velocity.State.calls.push([ call, elements, opts, null, promiseData.resolver ]);
|
3163 |
|
3164 | /* If the animation tick isn't running, start it. (Velocity shuts it off when there are no active calls to process.) */
|
3165 | if (Velocity.State.isTicking === false) {
|
3166 | Velocity.State.isTicking = true;
|
3167 |
|
3168 | /* Start the tick loop. */
|
3169 | tick();
|
3170 | }
|
3171 | } else {
|
3172 | elementsIndex++;
|
3173 | }
|
3174 | }
|
3175 | }
|
3176 |
|
3177 | /* When the queue option is set to false, the call skips the element's queue and fires immediately. */
|
3178 | if (opts.queue === false) {
|
3179 | /* Since this buildQueue call doesn't respect the element's existing queue (which is where a delay option would have been appended),
|
3180 | we manually inject the delay property here with an explicit setTimeout. */
|
3181 | if (opts.delay) {
|
3182 | setTimeout(buildQueue, opts.delay);
|
3183 | } else {
|
3184 | buildQueue();
|
3185 | }
|
3186 | /* Otherwise, the call undergoes element queueing as normal. */
|
3187 | /* Note: To interoperate with jQuery, Velocity uses jQuery's own $.queue() stack for queuing logic. */
|
3188 | } else {
|
3189 | $.queue(element, opts.queue, function(next, clearQueue) {
|
3190 | /* If the clearQueue flag was passed in by the stop command, resolve this call's promise. (Promises can only be resolved once,
|
3191 | so it's fine if this is repeatedly triggered for each element in the associated call.) */
|
3192 | if (clearQueue === true) {
|
3193 | if (promiseData.promise) {
|
3194 | promiseData.resolver(elements);
|
3195 | }
|
3196 |
|
3197 | /* Do not continue with animation queueing. */
|
3198 | return true;
|
3199 | }
|
3200 |
|
3201 | /* This flag indicates to the upcoming completeCall() function that this queue entry was initiated by Velocity.
|
3202 | See completeCall() for further details. */
|
3203 | Velocity.velocityQueueEntryFlag = true;
|
3204 |
|
3205 | buildQueue(next);
|
3206 | });
|
3207 | }
|
3208 |
|
3209 | /*********************
|
3210 | Auto-Dequeuing
|
3211 | *********************/
|
3212 |
|
3213 | /* As per jQuery's $.queue() behavior, to fire the first non-custom-queue entry on an element, the element
|
3214 | must be dequeued if its queue stack consists *solely* of the current call. (This can be determined by checking
|
3215 | for the "inprogress" item that jQuery prepends to active queue stack arrays.) Regardless, whenever the element's
|
3216 | queue is further appended with additional items -- including $.delay()'s or even $.animate() calls, the queue's
|
3217 | first entry is automatically fired. This behavior contrasts that of custom queues, which never auto-fire. */
|
3218 | /* Note: When an element set is being subjected to a non-parallel Velocity call, the animation will not begin until
|
3219 | each one of the elements in the set has reached the end of its individually pre-existing queue chain. */
|
3220 | /* Note: Unfortunately, most people don't fully grasp jQuery's powerful, yet quirky, $.queue() function.
|
3221 | Lean more here: http://stackoverflow.com/questions/1058158/can-somebody-explain-jquery-queue-to-me */
|
3222 | if ((opts.queue === "" || opts.queue === "fx") && $.queue(element)[0] !== "inprogress") {
|
3223 | $.dequeue(element);
|
3224 | }
|
3225 | }
|
3226 |
|
3227 | /**************************
|
3228 | Element Set Iteration
|
3229 | **************************/
|
3230 |
|
3231 | /* If the "nodeType" property exists on the elements variable, we're animating a single element.
|
3232 | Place it in an array so that $.each() can iterate over it. */
|
3233 | $.each(elements, function(i, element) {
|
3234 | /* Ensure each element in a set has a nodeType (is a real element) to avoid throwing errors. */
|
3235 | if (Type.isNode(element)) {
|
3236 | processElement.call(element);
|
3237 | }
|
3238 | });
|
3239 |
|
3240 | /******************
|
3241 | Option: Loop
|
3242 | ******************/
|
3243 |
|
3244 | /* The loop option accepts an integer indicating how many times the element should loop between the values in the
|
3245 | current call's properties map and the element's property values prior to this call. */
|
3246 | /* Note: The loop option's logic is performed here -- after element processing -- because the current call needs
|
3247 | to undergo its queue insertion prior to the loop option generating its series of constituent "reverse" calls,
|
3248 | which chain after the current call. Two reverse calls (two "alternations") constitute one loop. */
|
3249 | var opts = $.extend({}, Velocity.defaults, options),
|
3250 | reverseCallsCount;
|
3251 |
|
3252 | opts.loop = parseInt(opts.loop);
|
3253 | reverseCallsCount = (opts.loop * 2) - 1;
|
3254 |
|
3255 | if (opts.loop) {
|
3256 | /* Double the loop count to convert it into its appropriate number of "reverse" calls.
|
3257 | Subtract 1 from the resulting value since the current call is included in the total alternation count. */
|
3258 | for (var x = 0; x < reverseCallsCount; x++) {
|
3259 | /* Since the logic for the reverse action occurs inside Queueing and therefore this call's options object
|
3260 | isn't parsed until then as well, the current call's delay option must be explicitly passed into the reverse
|
3261 | call so that the delay logic that occurs inside *Pre-Queueing* can process it. */
|
3262 | var reverseOptions = {
|
3263 | delay: opts.delay,
|
3264 | progress: opts.progress
|
3265 | };
|
3266 |
|
3267 | /* If a complete callback was passed into this call, transfer it to the loop redirect's final "reverse" call
|
3268 | so that it's triggered when the entire redirect is complete (and not when the very first animation is complete). */
|
3269 | if (x === reverseCallsCount - 1) {
|
3270 | reverseOptions.display = opts.display;
|
3271 | reverseOptions.visibility = opts.visibility;
|
3272 | reverseOptions.complete = opts.complete;
|
3273 | }
|
3274 |
|
3275 | animate(elements, "reverse", reverseOptions);
|
3276 | }
|
3277 | }
|
3278 |
|
3279 | /***************
|
3280 | Chaining
|
3281 | ***************/
|
3282 |
|
3283 | /* Return the elements back to the call chain, with wrapped elements taking precedence in case Velocity was called via the $.fn. extension. */
|
3284 | return getChain();
|
3285 | };
|
3286 |
|
3287 | /* Turn Velocity into the animation function, extended with the pre-existing Velocity object. */
|
3288 | Velocity = $.extend(animate, Velocity);
|
3289 | /* For legacy support, also expose the literal animate method. */
|
3290 | Velocity.animate = animate;
|
3291 |
|
3292 | /**************
|
3293 | Timing
|
3294 | **************/
|
3295 |
|
3296 | /* Ticker function. */
|
3297 | var ticker = window.requestAnimationFrame || rAFShim;
|
3298 |
|
3299 | /* Inactive browser tabs pause rAF, which results in all active animations immediately sprinting to their completion states when the tab refocuses.
|
3300 | To get around this, we dynamically switch rAF to setTimeout (which the browser *doesn't* pause) when the tab loses focus. We skip this for mobile
|
3301 | devices to avoid wasting battery power on inactive tabs. */
|
3302 | /* Note: Tab focus detection doesn't work on older versions of IE, but that's okay since they don't support rAF to begin with. */
|
3303 | if (!Velocity.State.isMobile && document.hidden !== undefined) {
|
3304 | document.addEventListener("visibilitychange", function() {
|
3305 | /* Reassign the rAF function (which the global tick() function uses) based on the tab's focus state. */
|
3306 | if (document.hidden) {
|
3307 | ticker = function(callback) {
|
3308 | /* The tick function needs a truthy first argument in order to pass its internal timestamp check. */
|
3309 | return setTimeout(function() { callback(true) }, 16);
|
3310 | };
|
3311 |
|
3312 | /* The rAF loop has been paused by the browser, so we manually restart the tick. */
|
3313 | tick();
|
3314 | } else {
|
3315 | ticker = window.requestAnimationFrame || rAFShim;
|
3316 | }
|
3317 | });
|
3318 | }
|
3319 |
|
3320 | /************
|
3321 | Tick
|
3322 | ************/
|
3323 |
|
3324 | /* Note: All calls to Velocity are pushed to the Velocity.State.calls array, which is fully iterated through upon each tick. */
|
3325 | function tick (timestamp) {
|
3326 | /* An empty timestamp argument indicates that this is the first tick occurence since ticking was turned on.
|
3327 | We leverage this metadata to fully ignore the first tick pass since RAF's initial pass is fired whenever
|
3328 | the browser's next tick sync time occurs, which results in the first elements subjected to Velocity
|
3329 | calls being animated out of sync with any elements animated immediately thereafter. In short, we ignore
|
3330 | the first RAF tick pass so that elements being immediately consecutively animated -- instead of simultaneously animated
|
3331 | by the same Velocity call -- are properly batched into the same initial RAF tick and consequently remain in sync thereafter. */
|
3332 | if (timestamp) {
|
3333 | /* We ignore RAF's high resolution timestamp since it can be significantly offset when the browser is
|
3334 | under high stress; we opt for choppiness over allowing the browser to drop huge chunks of frames. */
|
3335 | var timeCurrent = (new Date).getTime();
|
3336 |
|
3337 | /********************
|
3338 | Call Iteration
|
3339 | ********************/
|
3340 |
|
3341 | /* Iterate through each active call. */
|
3342 | for (var i = 0, callsLength = Velocity.State.calls.length; i < callsLength; i++) {
|
3343 | /* When a Velocity call is completed, its Velocity.State.calls entry is set to false. Continue on to the next call. */
|
3344 | if (!Velocity.State.calls[i]) {
|
3345 | continue;
|
3346 | }
|
3347 |
|
3348 | /************************
|
3349 | Call-Wide Variables
|
3350 | ************************/
|
3351 |
|
3352 | var callContainer = Velocity.State.calls[i],
|
3353 | call = callContainer[0],
|
3354 | opts = callContainer[2],
|
3355 | timeStart = callContainer[3],
|
3356 | firstTick = !!timeStart;
|
3357 |
|
3358 | /* If timeStart is undefined, then this is the first time that this call has been processed by tick().
|
3359 | We assign timeStart now so that its value is as close to the real animation start time as possible.
|
3360 | (Conversely, had timeStart been defined when this call was added to Velocity.State.calls, the delay
|
3361 | between that time and now would cause the first few frames of the tween to be skipped since
|
3362 | percentComplete is calculated relative to timeStart.) */
|
3363 | /* Further, subtract 16ms (the approximate resolution of RAF) from the current time value so that the
|
3364 | first tick iteration isn't wasted by animating at 0% tween completion, which would produce the
|
3365 | same style value as the element's current value. */
|
3366 | if (!timeStart) {
|
3367 | timeStart = Velocity.State.calls[i][3] = timeCurrent - 16;
|
3368 | }
|
3369 |
|
3370 | /* The tween's completion percentage is relative to the tween's start time, not the tween's start value
|
3371 | (which would result in unpredictable tween durations since JavaScript's timers are not particularly accurate).
|
3372 | Accordingly, we ensure that percentComplete does not exceed 1. */
|
3373 | var percentComplete = Math.min((timeCurrent - timeStart) / opts.duration, 1);
|
3374 |
|
3375 | /**********************
|
3376 | Element Iteration
|
3377 | **********************/
|
3378 |
|
3379 | /* For every call, iterate through each of the elements in its set. */
|
3380 | for (var j = 0, callLength = call.length; j < callLength; j++) {
|
3381 | var tweensContainer = call[j],
|
3382 | element = tweensContainer.element;
|
3383 |
|
3384 | /* Check to see if this element has been deleted midway through the animation by checking for the
|
3385 | continued existence of its data cache. If it's gone, skip animating this element. */
|
3386 | if (!Data(element)) {
|
3387 | continue;
|
3388 | }
|
3389 |
|
3390 | var transformPropertyExists = false;
|
3391 |
|
3392 | /**********************************
|
3393 | Display & Visibility Toggling
|
3394 | **********************************/
|
3395 |
|
3396 | /* If the display option is set to non-"none", set it upfront so that the element can become visible before tweening begins.
|
3397 | (Otherwise, display's "none" value is set in completeCall() once the animation has completed.) */
|
3398 | if (opts.display !== undefined && opts.display !== null && opts.display !== "none") {
|
3399 | if (opts.display === "flex") {
|
3400 | var flexValues = [ "-webkit-box", "-moz-box", "-ms-flexbox", "-webkit-flex" ];
|
3401 |
|
3402 | $.each(flexValues, function(i, flexValue) {
|
3403 | CSS.setPropertyValue(element, "display", flexValue);
|
3404 | });
|
3405 | }
|
3406 |
|
3407 | CSS.setPropertyValue(element, "display", opts.display);
|
3408 | }
|
3409 |
|
3410 | /* Same goes with the visibility option, but its "none" equivalent is "hidden". */
|
3411 | if (opts.visibility !== undefined && opts.visibility !== "hidden") {
|
3412 | CSS.setPropertyValue(element, "visibility", opts.visibility);
|
3413 | }
|
3414 |
|
3415 | /************************
|
3416 | Property Iteration
|
3417 | ************************/
|
3418 |
|
3419 | /* For every element, iterate through each property. */
|
3420 | for (var property in tweensContainer) {
|
3421 | /* Note: In addition to property tween data, tweensContainer contains a reference to its associated element. */
|
3422 | if (property !== "element") {
|
3423 | var tween = tweensContainer[property],
|
3424 | currentValue,
|
3425 | /* Easing can either be a pre-genereated function or a string that references a pre-registered easing
|
3426 | on the Velocity.Easings object. In either case, return the appropriate easing *function*. */
|
3427 | easing = Type.isString(tween.easing) ? Velocity.Easings[tween.easing] : tween.easing;
|
3428 |
|
3429 | /******************************
|
3430 | Current Value Calculation
|
3431 | ******************************/
|
3432 |
|
3433 | /* If this is the last tick pass (if we've reached 100% completion for this tween),
|
3434 | ensure that currentValue is explicitly set to its target endValue so that it's not subjected to any rounding. */
|
3435 | if (percentComplete === 1) {
|
3436 | currentValue = tween.endValue;
|
3437 | /* Otherwise, calculate currentValue based on the current delta from startValue. */
|
3438 | } else {
|
3439 | currentValue = tween.startValue + ((tween.endValue - tween.startValue) * easing(percentComplete));
|
3440 |
|
3441 | /* If no value change is occurring, don't proceed with DOM updating. */
|
3442 | if (!firstTick && (currentValue === tween.currentValue)) {
|
3443 | continue;
|
3444 | }
|
3445 | }
|
3446 |
|
3447 | tween.currentValue = currentValue;
|
3448 |
|
3449 | /******************
|
3450 | Hooks: Part I
|
3451 | ******************/
|
3452 |
|
3453 | /* For hooked properties, the newly-updated rootPropertyValueCache is cached onto the element so that it can be used
|
3454 | for subsequent hooks in this call that are associated with the same root property. If we didn't cache the updated
|
3455 | rootPropertyValue, each subsequent update to the root property in this tick pass would reset the previous hook's
|
3456 | updates to rootPropertyValue prior to injection. A nice performance byproduct of rootPropertyValue caching is that
|
3457 | subsequently chained animations using the same hookRoot but a different hook can use this cached rootPropertyValue. */
|
3458 | if (CSS.Hooks.registered[property]) {
|
3459 | var hookRoot = CSS.Hooks.getRoot(property),
|
3460 | rootPropertyValueCache = Data(element).rootPropertyValueCache[hookRoot];
|
3461 |
|
3462 | if (rootPropertyValueCache) {
|
3463 | tween.rootPropertyValue = rootPropertyValueCache;
|
3464 | }
|
3465 | }
|
3466 |
|
3467 | /*****************
|
3468 | DOM Update
|
3469 | *****************/
|
3470 |
|
3471 | /* setPropertyValue() returns an array of the property name and property value post any normalization that may have been performed. */
|
3472 | /* Note: To solve an IE<=8 positioning bug, the unit type is dropped when setting a property value of 0. */
|
3473 | var adjustedSetData = CSS.setPropertyValue(element, /* SET */
|
3474 | property,
|
3475 | tween.currentValue + (parseFloat(currentValue) === 0 ? "" : tween.unitType),
|
3476 | tween.rootPropertyValue,
|
3477 | tween.scrollData);
|
3478 |
|
3479 | /*******************
|
3480 | Hooks: Part II
|
3481 | *******************/
|
3482 |
|
3483 | /* Now that we have the hook's updated rootPropertyValue (the post-processed value provided by adjustedSetData), cache it onto the element. */
|
3484 | if (CSS.Hooks.registered[property]) {
|
3485 | /* Since adjustedSetData contains normalized data ready for DOM updating, the rootPropertyValue needs to be re-extracted from its normalized form. ?? */
|
3486 | if (CSS.Normalizations.registered[hookRoot]) {
|
3487 | Data(element).rootPropertyValueCache[hookRoot] = CSS.Normalizations.registered[hookRoot]("extract", null, adjustedSetData[1]);
|
3488 | } else {
|
3489 | Data(element).rootPropertyValueCache[hookRoot] = adjustedSetData[1];
|
3490 | }
|
3491 | }
|
3492 |
|
3493 | /***************
|
3494 | Transforms
|
3495 | ***************/
|
3496 |
|
3497 | /* Flag whether a transform property is being animated so that flushTransformCache() can be triggered once this tick pass is complete. */
|
3498 | if (adjustedSetData[0] === "transform") {
|
3499 | transformPropertyExists = true;
|
3500 | }
|
3501 | }
|
3502 | }
|
3503 |
|
3504 | /****************
|
3505 | mobileHA
|
3506 | ****************/
|
3507 |
|
3508 | /* If mobileHA is enabled, set the translate3d transform to null to force hardware acceleration.
|
3509 | It's safe to override this property since Velocity doesn't actually support its animation (hooks are used in its place). */
|
3510 | if (opts.mobileHA) {
|
3511 | /* Don't set the null transform hack if we've already done so. */
|
3512 | if (Data(element).transformCache.translate3d === undefined) {
|
3513 | /* All entries on the transformCache object are later concatenated into a single transform string via flushTransformCache(). */
|
3514 | Data(element).transformCache.translate3d = "(0px, 0px, 0px)";
|
3515 |
|
3516 | transformPropertyExists = true;
|
3517 | }
|
3518 | }
|
3519 |
|
3520 | if (transformPropertyExists) {
|
3521 | CSS.flushTransformCache(element);
|
3522 | }
|
3523 | }
|
3524 |
|
3525 | /* The non-"none" display value is only applied to an element once -- when its associated call is first ticked through.
|
3526 | Accordingly, it's set to false so that it isn't re-processed by this call in the next tick. */
|
3527 | if (opts.display !== undefined && opts.display !== "none") {
|
3528 | Velocity.State.calls[i][2].display = false;
|
3529 | }
|
3530 | if (opts.visibility !== undefined && opts.visibility !== "hidden") {
|
3531 | Velocity.State.calls[i][2].visibility = false;
|
3532 | }
|
3533 |
|
3534 |
|
3535 | /* Pass the elements and the timing data (percentComplete, msRemaining, and timeStart) into the progress callback. */
|
3536 | if (opts.progress) {
|
3537 | opts.progress.call(callContainer[1],
|
3538 | callContainer[1],
|
3539 | percentComplete,
|
3540 | Math.max(0, (timeStart + opts.duration) - timeCurrent),
|
3541 | timeStart);
|
3542 | }
|
3543 |
|
3544 | /* If this call has finished tweening, pass its index to completeCall() to handle call cleanup. */
|
3545 | if (percentComplete === 1) {
|
3546 | completeCall(i);
|
3547 | }
|
3548 | }
|
3549 | }
|
3550 |
|
3551 | /* Note: completeCall() sets the isTicking flag to false when the last call on Velocity.State.calls has completed. */
|
3552 | if (Velocity.State.isTicking) {
|
3553 | ticker(tick);
|
3554 | }
|
3555 | }
|
3556 |
|
3557 | /**********************
|
3558 | Call Completion
|
3559 | **********************/
|
3560 |
|
3561 | /* Note: Unlike tick(), which processes all active calls at once, call completion is handled on a per-call basis. */
|
3562 | function completeCall (callIndex, isStopped) {
|
3563 | /* Ensure the call exists. */
|
3564 | if (!Velocity.State.calls[callIndex]) {
|
3565 | return false;
|
3566 | }
|
3567 |
|
3568 | /* Pull the metadata from the call. */
|
3569 | var call = Velocity.State.calls[callIndex][0],
|
3570 | elements = Velocity.State.calls[callIndex][1],
|
3571 | opts = Velocity.State.calls[callIndex][2],
|
3572 | resolver = Velocity.State.calls[callIndex][4];
|
3573 |
|
3574 | var remainingCallsExist = false;
|
3575 |
|
3576 | /*************************
|
3577 | Element Finalization
|
3578 | *************************/
|
3579 |
|
3580 | for (var i = 0, callLength = call.length; i < callLength; i++) {
|
3581 | var element = call[i].element;
|
3582 |
|
3583 | /* If the user set display to "none" (intending to hide the element), set it now that the animation has completed. */
|
3584 | /* Note: display:none isn't set when calls are manually stopped (via Velocity("stop"). */
|
3585 | /* Note: Display gets ignored with "reverse" calls and infinite loops, since this behavior would be undesirable. */
|
3586 | if (!isStopped && !opts.loop) {
|
3587 | if (opts.display === "none") {
|
3588 | CSS.setPropertyValue(element, "display", opts.display);
|
3589 | }
|
3590 |
|
3591 | if (opts.visibility === "hidden") {
|
3592 | CSS.setPropertyValue(element, "visibility", opts.visibility);
|
3593 | }
|
3594 | }
|
3595 |
|
3596 | /* If the element's queue is empty (if only the "inprogress" item is left at position 0) or if its queue is about to run
|
3597 | a non-Velocity-initiated entry, turn off the isAnimating flag. A non-Velocity-initiatied queue entry's logic might alter
|
3598 | an element's CSS values and thereby cause Velocity's cached value data to go stale. To detect if a queue entry was initiated by Velocity,
|
3599 | we check for the existence of our special Velocity.queueEntryFlag declaration, which minifiers won't rename since the flag
|
3600 | is assigned to jQuery's global $ object and thus exists out of Velocity's own scope. */
|
3601 | if (opts.loop !== true && ($.queue(element)[1] === undefined || !/\.velocityQueueEntryFlag/i.test($.queue(element)[1]))) {
|
3602 | /* The element may have been deleted. Ensure that its data cache still exists before acting on it. */
|
3603 | if (Data(element)) {
|
3604 | Data(element).isAnimating = false;
|
3605 | /* Clear the element's rootPropertyValueCache, which will become stale. */
|
3606 | Data(element).rootPropertyValueCache = {};
|
3607 |
|
3608 | var transformHAPropertyExists = false;
|
3609 | /* If any 3D transform subproperty is at its default value (regardless of unit type), remove it. */
|
3610 | $.each(CSS.Lists.transforms3D, function(i, transformName) {
|
3611 | var defaultValue = /^scale/.test(transformName) ? 1 : 0,
|
3612 | currentValue = Data(element).transformCache[transformName];
|
3613 |
|
3614 | if (Data(element).transformCache[transformName] !== undefined && new RegExp("^\\(" + defaultValue + "[^.]").test(currentValue)) {
|
3615 | transformHAPropertyExists = true;
|
3616 |
|
3617 | delete Data(element).transformCache[transformName];
|
3618 | }
|
3619 | });
|
3620 |
|
3621 | /* Mobile devices have hardware acceleration removed at the end of the animation in order to avoid hogging the GPU's memory. */
|
3622 | if (opts.mobileHA) {
|
3623 | transformHAPropertyExists = true;
|
3624 | delete Data(element).transformCache.translate3d;
|
3625 | }
|
3626 |
|
3627 | /* Flush the subproperty removals to the DOM. */
|
3628 | if (transformHAPropertyExists) {
|
3629 | CSS.flushTransformCache(element);
|
3630 | }
|
3631 |
|
3632 | /* Remove the "velocity-animating" indicator class. */
|
3633 | CSS.Values.removeClass(element, "velocity-animating");
|
3634 | }
|
3635 | }
|
3636 |
|
3637 | /*********************
|
3638 | Option: Complete
|
3639 | *********************/
|
3640 |
|
3641 | /* Complete is fired once per call (not once per element) and is passed the full raw DOM element set as both its context and its first argument. */
|
3642 | /* Note: Callbacks aren't fired when calls are manually stopped (via Velocity("stop"). */
|
3643 | if (!isStopped && opts.complete && !opts.loop && (i === callLength - 1)) {
|
3644 | /* We throw callbacks in a setTimeout so that thrown errors don't halt the execution of Velocity itself. */
|
3645 | try {
|
3646 | opts.complete.call(elements, elements);
|
3647 | } catch (error) {
|
3648 | setTimeout(function() { throw error; }, 1);
|
3649 | }
|
3650 | }
|
3651 |
|
3652 | /**********************
|
3653 | Promise Resolving
|
3654 | **********************/
|
3655 |
|
3656 | /* Note: Infinite loops don't return promises. */
|
3657 | if (resolver && opts.loop !== true) {
|
3658 | resolver(elements);
|
3659 | }
|
3660 |
|
3661 | /****************************
|
3662 | Option: Loop (Infinite)
|
3663 | ****************************/
|
3664 |
|
3665 | if (opts.loop === true && !isStopped) {
|
3666 | /* If a rotateX/Y/Z property is being animated to 360 deg with loop:true, swap tween start/end values to enable
|
3667 | continuous iterative rotation looping. (Otherise, the element would just rotate back and forth.) */
|
3668 | $.each(Data(element).tweensContainer, function(propertyName, tweenContainer) {
|
3669 | if (/^rotate/.test(propertyName) && parseFloat(tweenContainer.endValue) === 360) {
|
3670 | tweenContainer.endValue = 0;
|
3671 | tweenContainer.startValue = 360;
|
3672 | }
|
3673 | });
|
3674 |
|
3675 | Velocity(element, "reverse", { loop: true, delay: opts.delay });
|
3676 | }
|
3677 |
|
3678 | /***************
|
3679 | Dequeueing
|
3680 | ***************/
|
3681 |
|
3682 | /* Fire the next call in the queue so long as this call's queue wasn't set to false (to trigger a parallel animation),
|
3683 | which would have already caused the next call to fire. Note: Even if the end of the animation queue has been reached,
|
3684 | $.dequeue() must still be called in order to completely clear jQuery's animation queue. */
|
3685 | if (opts.queue !== false) {
|
3686 | $.dequeue(element, opts.queue);
|
3687 | }
|
3688 | }
|
3689 |
|
3690 | /************************
|
3691 | Calls Array Cleanup
|
3692 | ************************/
|
3693 |
|
3694 | /* Since this call is complete, set it to false so that the rAF tick skips it. This array is later compacted via compactSparseArray().
|
3695 | (For performance reasons, the call is set to false instead of being deleted from the array: http://www.html5rocks.com/en/tutorials/speed/v8/) */
|
3696 | Velocity.State.calls[callIndex] = false;
|
3697 |
|
3698 | /* Iterate through the calls array to determine if this was the final in-progress animation.
|
3699 | If so, set a flag to end ticking and clear the calls array. */
|
3700 | for (var j = 0, callsLength = Velocity.State.calls.length; j < callsLength; j++) {
|
3701 | if (Velocity.State.calls[j] !== false) {
|
3702 | remainingCallsExist = true;
|
3703 |
|
3704 | break;
|
3705 | }
|
3706 | }
|
3707 |
|
3708 | if (remainingCallsExist === false) {
|
3709 | /* tick() will detect this flag upon its next iteration and subsequently turn itself off. */
|
3710 | Velocity.State.isTicking = false;
|
3711 |
|
3712 | /* Clear the calls array so that its length is reset. */
|
3713 | delete Velocity.State.calls;
|
3714 | Velocity.State.calls = [];
|
3715 | }
|
3716 | }
|
3717 |
|
3718 | /******************
|
3719 | Frameworks
|
3720 | ******************/
|
3721 |
|
3722 | /* Both jQuery and Zepto allow their $.fn object to be extended to allow wrapped elements to be subjected to plugin calls.
|
3723 | If either framework is loaded, register a "velocity" extension pointing to Velocity's core animate() method. Velocity
|
3724 | also registers itself onto a global container (window.jQuery || window.Zepto || window) so that certain features are
|
3725 | accessible beyond just a per-element scope. This master object contains an .animate() method, which is later assigned to $.fn
|
3726 | (if jQuery or Zepto are present). Accordingly, Velocity can both act on wrapped DOM elements and stand alone for targeting raw DOM elements. */
|
3727 | global.Velocity = Velocity;
|
3728 |
|
3729 | if (global !== window) {
|
3730 | /* Assign the element function to Velocity's core animate() method. */
|
3731 | global.fn.velocity = animate;
|
3732 | /* Assign the object function's defaults to Velocity's global defaults object. */
|
3733 | global.fn.velocity.defaults = Velocity.defaults;
|
3734 | }
|
3735 |
|
3736 | /***********************
|
3737 | Packaged Redirects
|
3738 | ***********************/
|
3739 |
|
3740 | /* slideUp, slideDown */
|
3741 | $.each([ "Down", "Up" ], function(i, direction) {
|
3742 | Velocity.Redirects["slide" + direction] = function (element, options, elementsIndex, elementsSize, elements, promiseData) {
|
3743 | var opts = $.extend({}, options),
|
3744 | begin = opts.begin,
|
3745 | complete = opts.complete,
|
3746 | computedValues = { height: "", marginTop: "", marginBottom: "", paddingTop: "", paddingBottom: "" },
|
3747 | inlineValues = {};
|
3748 |
|
3749 | if (opts.display === undefined) {
|
3750 | /* Show the element before slideDown begins and hide the element after slideUp completes. */
|
3751 | /* Note: Inline elements cannot have dimensions animated, so they're reverted to inline-block. */
|
3752 | opts.display = (direction === "Down" ? (Velocity.CSS.Values.getDisplayType(element) === "inline" ? "inline-block" : "block") : "none");
|
3753 | }
|
3754 |
|
3755 | opts.begin = function() {
|
3756 | /* If the user passed in a begin callback, fire it now. */
|
3757 | begin && begin.call(elements, elements);
|
3758 |
|
3759 | /* Cache the elements' original vertical dimensional property values so that we can animate back to them. */
|
3760 | for (var property in computedValues) {
|
3761 | /* Cache all inline values, we reset to upon animation completion. */
|
3762 | inlineValues[property] = element.style[property];
|
3763 |
|
3764 | /* For slideDown, use forcefeeding to animate all vertical properties from 0. For slideUp,
|
3765 | use forcefeeding to start from computed values and animate down to 0. */
|
3766 | var propertyValue = Velocity.CSS.getPropertyValue(element, property);
|
3767 | computedValues[property] = (direction === "Down") ? [ propertyValue, 0 ] : [ 0, propertyValue ];
|
3768 | }
|
3769 |
|
3770 | /* Force vertical overflow content to clip so that sliding works as expected. */
|
3771 | inlineValues.overflow = element.style.overflow;
|
3772 | element.style.overflow = "hidden";
|
3773 | }
|
3774 |
|
3775 | opts.complete = function() {
|
3776 | /* Reset element to its pre-slide inline values once its slide animation is complete. */
|
3777 | for (var property in inlineValues) {
|
3778 | element.style[property] = inlineValues[property];
|
3779 | }
|
3780 |
|
3781 | /* If the user passed in a complete callback, fire it now. */
|
3782 | complete && complete.call(elements, elements);
|
3783 | promiseData && promiseData.resolver(elements);
|
3784 | };
|
3785 |
|
3786 | Velocity(element, computedValues, opts);
|
3787 | };
|
3788 | });
|
3789 |
|
3790 | /* fadeIn, fadeOut */
|
3791 | $.each([ "In", "Out" ], function(i, direction) {
|
3792 | Velocity.Redirects["fade" + direction] = function (element, options, elementsIndex, elementsSize, elements, promiseData) {
|
3793 | var opts = $.extend({}, options),
|
3794 | propertiesMap = { opacity: (direction === "In") ? 1 : 0 },
|
3795 | originalComplete = opts.complete;
|
3796 |
|
3797 | /* Since redirects are triggered individually for each element in the animated set, avoid repeatedly triggering
|
3798 | callbacks by firing them only when the final element has been reached. */
|
3799 | if (elementsIndex !== elementsSize - 1) {
|
3800 | opts.complete = opts.begin = null;
|
3801 | } else {
|
3802 | opts.complete = function() {
|
3803 | if (originalComplete) {
|
3804 | originalComplete.call(elements, elements);
|
3805 | }
|
3806 |
|
3807 | promiseData && promiseData.resolver(elements);
|
3808 | }
|
3809 | }
|
3810 |
|
3811 | /* If a display was passed in, use it. Otherwise, default to "none" for fadeOut or the element-specific default for fadeIn. */
|
3812 | /* Note: We allow users to pass in "null" to skip display setting altogether. */
|
3813 | if (opts.display === undefined) {
|
3814 | opts.display = (direction === "In" ? "auto" : "none");
|
3815 | }
|
3816 |
|
3817 | Velocity(this, propertiesMap, opts);
|
3818 | };
|
3819 | });
|
3820 |
|
3821 | return Velocity;
|
3822 | }((window.jQuery || window.Zepto || window), window, document);
|
3823 | }));
|
3824 |
|
3825 | /******************
|
3826 | Known Issues
|
3827 | ******************/
|
3828 |
|
3829 | /* The CSS spec mandates that the translateX/Y/Z transforms are %-relative to the element itself -- not its parent.
|
3830 | Velocity, however, doesn't make this distinction. Thus, converting to or from the % unit with these subproperties
|
3831 | will produce an inaccurate conversion value. The same issue exists with the cx/cy attributes of SVG circles and ellipses. */ |
\ | No newline at end of file |