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7 |
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8 | (function (global, factory) {
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9 | typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
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10 | typeof define === 'function' && define.amd ? define(factory) :
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11 | (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.lgZoom = factory());
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12 | }(this, (function () { 'use strict';
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13 |
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14 | |
15 |
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16 |
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17 |
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18 |
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19 |
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20 |
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21 |
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22 |
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23 |
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24 |
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25 |
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26 |
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27 |
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28 |
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29 | var __assign = function() {
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30 | __assign = Object.assign || function __assign(t) {
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31 | for (var s, i = 1, n = arguments.length; i < n; i++) {
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32 | s = arguments[i];
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33 | for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
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34 | }
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35 | return t;
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36 | };
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37 | return __assign.apply(this, arguments);
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38 | };
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39 |
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40 | var zoomSettings = {
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41 | scale: 1,
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42 | zoom: true,
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43 | actualSize: true,
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44 | showZoomInOutIcons: false,
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45 | actualSizeIcons: {
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46 | zoomIn: 'lg-zoom-in',
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47 | zoomOut: 'lg-zoom-out',
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48 | },
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49 | enableZoomAfter: 300,
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50 | zoomPluginStrings: {
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51 | zoomIn: 'Zoom in',
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52 | zoomOut: 'Zoom out',
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53 | viewActualSize: 'View actual size',
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54 | },
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55 | };
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56 |
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57 | |
58 |
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59 |
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60 |
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61 |
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62 | var lGEvents = {
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63 | afterAppendSlide: 'lgAfterAppendSlide',
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64 | init: 'lgInit',
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65 | hasVideo: 'lgHasVideo',
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66 | containerResize: 'lgContainerResize',
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67 | updateSlides: 'lgUpdateSlides',
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68 | afterAppendSubHtml: 'lgAfterAppendSubHtml',
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69 | beforeOpen: 'lgBeforeOpen',
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70 | afterOpen: 'lgAfterOpen',
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71 | slideItemLoad: 'lgSlideItemLoad',
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72 | beforeSlide: 'lgBeforeSlide',
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73 | afterSlide: 'lgAfterSlide',
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74 | posterClick: 'lgPosterClick',
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75 | dragStart: 'lgDragStart',
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76 | dragMove: 'lgDragMove',
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77 | dragEnd: 'lgDragEnd',
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78 | beforeNextSlide: 'lgBeforeNextSlide',
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79 | beforePrevSlide: 'lgBeforePrevSlide',
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80 | beforeClose: 'lgBeforeClose',
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81 | afterClose: 'lgAfterClose',
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82 | rotateLeft: 'lgRotateLeft',
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83 | rotateRight: 'lgRotateRight',
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84 | flipHorizontal: 'lgFlipHorizontal',
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85 | flipVertical: 'lgFlipVertical',
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86 | autoplay: 'lgAutoplay',
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87 | autoplayStart: 'lgAutoplayStart',
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88 | autoplayStop: 'lgAutoplayStop',
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89 | };
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90 |
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91 | var Zoom = (function () {
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92 | function Zoom(instance, $LG) {
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93 |
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94 | this.core = instance;
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95 | this.$LG = $LG;
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96 | this.settings = __assign(__assign({}, zoomSettings), this.core.settings);
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97 | return this;
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98 | }
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99 |
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100 | Zoom.prototype.buildTemplates = function () {
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101 | var zoomIcons = this.settings.showZoomInOutIcons
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102 | ? "<button id=\"" + this.core.getIdName('lg-zoom-in') + "\" type=\"button\" aria-label=\"" + this.settings.zoomPluginStrings['zoomIn'] + "\" class=\"lg-zoom-in lg-icon\"></button><button id=\"" + this.core.getIdName('lg-zoom-out') + "\" type=\"button\" aria-label=\"" + this.settings.zoomPluginStrings['zoomIn'] + "\" class=\"lg-zoom-out lg-icon\"></button>"
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103 | : '';
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104 | if (this.settings.actualSize) {
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105 | zoomIcons += "<button id=\"" + this.core.getIdName('lg-actual-size') + "\" type=\"button\" aria-label=\"" + this.settings.zoomPluginStrings['viewActualSize'] + "\" class=\"" + this.settings.actualSizeIcons.zoomIn + " lg-icon\"></button>";
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106 | }
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107 | this.core.outer.addClass('lg-use-transition-for-zoom');
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108 | this.core.$toolbar.first().append(zoomIcons);
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109 | };
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110 | |
111 |
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112 |
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113 |
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114 |
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115 |
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116 | Zoom.prototype.enableZoom = function (event) {
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117 | var _this = this;
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118 |
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119 | var _speed = this.settings.enableZoomAfter + event.detail.delay;
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120 |
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121 | if (this.$LG('body').first().hasClass('lg-from-hash') &&
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122 | event.detail.delay) {
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123 |
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124 | _speed = 0;
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125 | }
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126 | else {
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127 |
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128 | this.$LG('body').first().removeClass('lg-from-hash');
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129 | }
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130 | this.zoomableTimeout = setTimeout(function () {
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131 | if (!_this.isImageSlide()) {
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132 | return;
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133 | }
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134 | _this.core.getSlideItem(event.detail.index).addClass('lg-zoomable');
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135 | if (event.detail.index === _this.core.index) {
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136 | _this.setZoomEssentials();
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137 | }
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138 | }, _speed + 30);
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139 | };
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140 | Zoom.prototype.enableZoomOnSlideItemLoad = function () {
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141 |
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142 | this.core.LGel.on(lGEvents.slideItemLoad + ".zoom", this.enableZoom.bind(this));
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143 | };
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144 | Zoom.prototype.getModifier = function (rotateValue, axis, el) {
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145 | var originalRotate = rotateValue;
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146 | rotateValue = Math.abs(rotateValue);
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147 | var transformValues = this.getCurrentTransform(el);
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148 | if (!transformValues) {
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149 | return 1;
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150 | }
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151 | var modifier = 1;
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152 | if (axis === 'X') {
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153 | var flipHorizontalValue = Math.sign(parseFloat(transformValues[0]));
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154 | if (rotateValue === 0 || rotateValue === 180) {
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155 | modifier = 1;
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156 | }
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157 | else if (rotateValue === 90) {
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158 | if ((originalRotate === -90 && flipHorizontalValue === 1) ||
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159 | (originalRotate === 90 && flipHorizontalValue === -1)) {
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160 | modifier = -1;
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161 | }
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162 | else {
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163 | modifier = 1;
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164 | }
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165 | }
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166 | modifier = modifier * flipHorizontalValue;
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167 | }
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168 | else {
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169 | var flipVerticalValue = Math.sign(parseFloat(transformValues[3]));
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170 | if (rotateValue === 0 || rotateValue === 180) {
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171 | modifier = 1;
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172 | }
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173 | else if (rotateValue === 90) {
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174 | var sinX = parseFloat(transformValues[1]);
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175 | var sinMinusX = parseFloat(transformValues[2]);
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176 | modifier = Math.sign(sinX * sinMinusX * originalRotate * flipVerticalValue);
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177 | }
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178 | modifier = modifier * flipVerticalValue;
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179 | }
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180 | return modifier;
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181 | };
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182 | Zoom.prototype.getImageSize = function ($image, rotateValue, axis) {
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183 | var imageSizes = {
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184 | y: 'offsetHeight',
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185 | x: 'offsetWidth',
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186 | };
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187 | if (Math.abs(rotateValue) === 90) {
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188 |
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189 | if (axis === 'x') {
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190 | axis = 'y';
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191 | }
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192 | else {
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193 | axis = 'x';
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194 | }
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195 | }
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196 | return $image[imageSizes[axis]];
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197 | };
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198 | Zoom.prototype.getDragCords = function (e, rotateValue) {
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199 | if (rotateValue === 90) {
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200 | return {
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201 | x: e.pageY,
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202 | y: e.pageX,
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203 | };
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204 | }
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205 | else {
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206 | return {
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207 | x: e.pageX,
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208 | y: e.pageY,
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209 | };
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210 | }
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211 | };
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212 | Zoom.prototype.getSwipeCords = function (e, rotateValue) {
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213 | var x = e.targetTouches[0].pageX;
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214 | var y = e.targetTouches[0].pageY;
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215 | if (rotateValue === 90) {
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216 | return {
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217 | x: y,
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218 | y: x,
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219 | };
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220 | }
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221 | else {
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222 | return {
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223 | x: x,
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224 | y: y,
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225 | };
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226 | }
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227 | };
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228 | Zoom.prototype.getDragAllowedAxises = function (rotateValue, scale) {
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229 | scale = scale || this.scale || 1;
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230 | var allowY = this.imageYSize * scale > this.containerRect.height;
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231 | var allowX = this.imageXSize * scale > this.containerRect.width;
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232 | if (rotateValue === 90) {
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233 | return {
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234 | allowX: allowY,
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235 | allowY: allowX,
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236 | };
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237 | }
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238 | else {
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239 | return {
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240 | allowX: allowX,
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241 | allowY: allowY,
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242 | };
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243 | }
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244 | };
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245 | |
246 |
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247 |
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248 |
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249 |
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250 |
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251 | Zoom.prototype.getCurrentTransform = function (el) {
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252 | if (!el) {
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253 | return;
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254 | }
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255 | var st = window.getComputedStyle(el, null);
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256 | var tm = st.getPropertyValue('-webkit-transform') ||
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257 | st.getPropertyValue('-moz-transform') ||
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258 | st.getPropertyValue('-ms-transform') ||
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259 | st.getPropertyValue('-o-transform') ||
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260 | st.getPropertyValue('transform') ||
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261 | 'none';
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262 | if (tm !== 'none') {
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263 | return tm.split('(')[1].split(')')[0].split(',');
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264 | }
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265 | return;
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266 | };
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267 | Zoom.prototype.getCurrentRotation = function (el) {
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268 | if (!el) {
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269 | return 0;
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270 | }
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271 | var values = this.getCurrentTransform(el);
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272 | if (values) {
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273 | return Math.round(Math.atan2(parseFloat(values[1]), parseFloat(values[0])) *
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274 | (180 / Math.PI));
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275 |
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276 |
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277 | }
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278 | return 0;
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279 | };
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280 | Zoom.prototype.setZoomEssentials = function () {
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281 | var $image = this.core
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282 | .getSlideItem(this.core.index)
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283 | .find('.lg-image')
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284 | .first();
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285 | var rotateEl = this.core
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286 | .getSlideItem(this.core.index)
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287 | .find('.lg-img-rotate')
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288 | .first()
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289 | .get();
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290 | this.rotateValue = this.getCurrentRotation(rotateEl);
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291 | this.imageYSize = this.getImageSize($image.get(), this.rotateValue, 'y');
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292 | this.imageXSize = this.getImageSize($image.get(), this.rotateValue, 'x');
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293 | this.containerRect = this.core.outer.get().getBoundingClientRect();
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294 | this.modifierX = this.getModifier(this.rotateValue, 'X', rotateEl);
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295 | this.modifierY = this.getModifier(this.rotateValue, 'Y', rotateEl);
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296 | };
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297 | |
298 |
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299 |
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300 |
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301 |
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302 |
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303 | Zoom.prototype.zoomImage = function (scale) {
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304 |
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305 | var offsetX = (this.containerRect.width - this.imageXSize) / 2 +
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306 | this.containerRect.left;
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307 | var _a = this.core.mediaContainerPosition, top = _a.top, bottom = _a.bottom;
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308 | var topBottomSpacing = Math.abs(top - bottom) / 2;
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309 | var offsetY = (this.containerRect.height -
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310 | this.imageYSize -
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311 | topBottomSpacing * this.modifierX) /
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312 | 2 +
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313 | this.scrollTop +
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314 | this.containerRect.top;
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315 | var originalX;
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316 | var originalY;
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317 | if (scale === 1) {
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318 | this.positionChanged = false;
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319 | }
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320 | var dragAllowedAxises = this.getDragAllowedAxises(Math.abs(this.rotateValue), scale);
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321 | var allowY = dragAllowedAxises.allowY, allowX = dragAllowedAxises.allowX;
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322 | if (this.positionChanged) {
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323 | originalX = this.left / (this.scale - 1);
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324 | originalY = this.top / (this.scale - 1);
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325 | this.pageX = Math.abs(originalX) + offsetX;
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326 | this.pageY = Math.abs(originalY) + offsetY;
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327 | this.positionChanged = false;
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328 | }
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329 | var possibleSwipeCords = this.getPossibleSwipeDragCords(this.rotateValue, scale);
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330 | var _x = offsetX - this.pageX;
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331 | var _y = offsetY - this.pageY;
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332 | var x = (scale - 1) * _x;
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333 | var y = (scale - 1) * _y;
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334 | if (allowX) {
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335 | if (this.isBeyondPossibleLeft(x, possibleSwipeCords.minX)) {
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336 | x = possibleSwipeCords.minX;
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337 | }
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338 | else if (this.isBeyondPossibleRight(x, possibleSwipeCords.maxX)) {
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339 | x = possibleSwipeCords.maxX;
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340 | }
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341 | }
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342 | else {
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343 | if (scale > 1) {
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344 | if (x < possibleSwipeCords.minX) {
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345 | x = possibleSwipeCords.minX;
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346 | }
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347 | else if (x > possibleSwipeCords.maxX) {
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348 | x = possibleSwipeCords.maxX;
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349 | }
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350 | }
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351 | }
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352 | if (allowY) {
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353 | if (this.isBeyondPossibleTop(y, possibleSwipeCords.minY)) {
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354 | y = possibleSwipeCords.minY;
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355 | }
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356 | else if (this.isBeyondPossibleBottom(y, possibleSwipeCords.maxY)) {
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357 | y = possibleSwipeCords.maxY;
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358 | }
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359 | }
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360 | else {
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361 |
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362 | if (scale > 1) {
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363 |
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364 | if (y < possibleSwipeCords.minY) {
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365 | y = possibleSwipeCords.minY;
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366 | }
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367 | else if (y > possibleSwipeCords.maxY) {
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368 | y = possibleSwipeCords.maxY;
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369 | }
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370 | }
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371 | }
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372 | this.setZoomStyles({
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373 | x: x,
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374 | y: y,
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375 | scale: scale,
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376 | });
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377 | };
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378 | |
379 |
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380 |
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381 |
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382 | Zoom.prototype.setZoomStyles = function (style) {
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383 | var $image = this.core
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384 | .getSlideItem(this.core.index)
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385 | .find('.lg-image')
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386 | .first();
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387 | var $dummyImage = this.core.outer
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388 | .find('.lg-current .lg-dummy-img')
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389 | .first();
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390 | var $imageWrap = $image.parent();
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391 | this.scale = style.scale;
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392 | $image.css('transform', 'scale3d(' + style.scale + ', ' + style.scale + ', 1)');
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393 | $dummyImage.css('transform', 'scale3d(' + style.scale + ', ' + style.scale + ', 1)');
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394 | var transform = 'translate3d(' + style.x + 'px, ' + style.y + 'px, 0)';
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395 | $imageWrap.css('transform', transform);
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396 | this.left = style.x;
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397 | this.top = style.y;
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398 | };
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399 | |
400 |
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401 |
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402 |
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403 | Zoom.prototype.setActualSize = function (index, event) {
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404 | var _this = this;
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405 |
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406 | if (!this.isImageSlide() ||
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407 | this.core.outer.hasClass('lg-first-slide-loading')) {
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408 | return;
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409 | }
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410 | var scale = this.getCurrentImageActualSizeScale();
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411 | if (this.core.outer.hasClass('lg-zoomed')) {
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412 | this.scale = 1;
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413 | }
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414 | else {
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415 | this.scale = this.getScale(scale);
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416 | }
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417 | this.setPageCords(event);
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418 | this.beginZoom(this.scale);
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419 | this.zoomImage(this.scale);
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420 | setTimeout(function () {
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421 | _this.core.outer.removeClass('lg-grabbing').addClass('lg-grab');
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422 | }, 10);
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423 | };
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424 | Zoom.prototype.getNaturalWidth = function (index) {
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425 | var $image = this.core.getSlideItem(index).find('.lg-image').first();
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426 | var naturalWidth = this.core.galleryItems[index].width;
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427 | return naturalWidth
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428 | ? parseFloat(naturalWidth)
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429 | : $image.get().naturalWidth;
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430 | };
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431 | Zoom.prototype.getActualSizeScale = function (naturalWidth, width) {
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432 | var _scale;
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433 | var scale;
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434 | if (naturalWidth > width) {
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435 | _scale = naturalWidth / width;
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436 | scale = _scale || 2;
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437 | }
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438 | else {
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439 | scale = 1;
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440 | }
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441 | return scale;
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442 | };
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443 | Zoom.prototype.getCurrentImageActualSizeScale = function () {
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444 | var $image = this.core
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445 | .getSlideItem(this.core.index)
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446 | .find('.lg-image')
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447 | .first();
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448 | var width = $image.get().offsetWidth;
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449 | var naturalWidth = this.getNaturalWidth(this.core.index) || width;
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450 | return this.getActualSizeScale(naturalWidth, width);
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451 | };
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452 | Zoom.prototype.getPageCords = function (event) {
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453 | var cords = {};
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454 | if (event) {
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455 | cords.x = event.pageX || event.targetTouches[0].pageX;
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456 | cords.y = event.pageY || event.targetTouches[0].pageY;
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457 | }
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458 | else {
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459 | var containerRect = this.core.outer.get().getBoundingClientRect();
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460 | cords.x = containerRect.width / 2 + containerRect.left;
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461 | cords.y =
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462 | containerRect.height / 2 + this.scrollTop + containerRect.top;
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463 | }
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464 | return cords;
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465 | };
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466 | Zoom.prototype.setPageCords = function (event) {
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467 | var pageCords = this.getPageCords(event);
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468 | this.pageX = pageCords.x;
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469 | this.pageY = pageCords.y;
|
470 | };
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471 |
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472 | Zoom.prototype.beginZoom = function (scale) {
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473 | this.core.outer.removeClass('lg-zoom-drag-transition lg-zoom-dragging');
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474 | if (scale > 1) {
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475 | this.core.outer.addClass('lg-zoomed');
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476 | var $actualSize = this.core.getElementById('lg-actual-size');
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477 | $actualSize
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478 | .removeClass(this.settings.actualSizeIcons.zoomIn)
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479 | .addClass(this.settings.actualSizeIcons.zoomOut);
|
480 | }
|
481 | else {
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482 | this.resetZoom();
|
483 | }
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484 | return scale > 1;
|
485 | };
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486 | Zoom.prototype.getScale = function (scale) {
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487 | var actualSizeScale = this.getCurrentImageActualSizeScale();
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488 | if (scale < 1) {
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489 | scale = 1;
|
490 | }
|
491 | else if (scale > actualSizeScale) {
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492 | scale = actualSizeScale;
|
493 | }
|
494 | return scale;
|
495 | };
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496 | Zoom.prototype.init = function () {
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497 | var _this = this;
|
498 | if (!this.settings.zoom) {
|
499 | return;
|
500 | }
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501 | this.buildTemplates();
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502 | this.enableZoomOnSlideItemLoad();
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503 | var tapped = null;
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504 | this.core.outer.on('dblclick.lg', function (event) {
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505 | if (!_this.$LG(event.target).hasClass('lg-image')) {
|
506 | return;
|
507 | }
|
508 | _this.setActualSize(_this.core.index, event);
|
509 | });
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510 | this.core.outer.on('touchstart.lg', function (event) {
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511 | var $target = _this.$LG(event.target);
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512 | if (event.targetTouches.length === 1 &&
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513 | $target.hasClass('lg-image')) {
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514 | if (!tapped) {
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515 | tapped = setTimeout(function () {
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516 | tapped = null;
|
517 | }, 300);
|
518 | }
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519 | else {
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520 | clearTimeout(tapped);
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521 | tapped = null;
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522 | event.preventDefault();
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523 | _this.setActualSize(_this.core.index, event);
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524 | }
|
525 | }
|
526 | });
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527 |
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528 | this.core.LGel.on(lGEvents.containerResize + ".zoom " + lGEvents.rotateRight + ".zoom " + lGEvents.rotateLeft + ".zoom " + lGEvents.flipHorizontal + ".zoom " + lGEvents.flipVertical + ".zoom", function () {
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529 | if (!_this.core.lgOpened || !_this.isImageSlide())
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530 | return;
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531 | _this.setPageCords();
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532 | _this.setZoomEssentials();
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533 | _this.zoomImage(_this.scale);
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534 | });
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535 |
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536 | this.$LG(window).on("scroll.lg.zoom.global" + this.core.lgId, function () {
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537 | if (!_this.core.lgOpened)
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538 | return;
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539 | _this.scrollTop = _this.$LG(window).scrollTop();
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540 | });
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541 | this.core.getElementById('lg-zoom-out').on('click.lg', function () {
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542 | if (_this.core.outer.find('.lg-current .lg-image').get()) {
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543 | _this.scale -= _this.settings.scale;
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544 | _this.scale = _this.getScale(_this.scale);
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545 | _this.beginZoom(_this.scale);
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546 | _this.zoomImage(_this.scale);
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547 | }
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548 | });
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549 | this.core.getElementById('lg-zoom-in').on('click.lg', function () {
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550 | _this.zoomIn();
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551 | });
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552 | this.core.getElementById('lg-actual-size').on('click.lg', function () {
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553 | _this.setActualSize(_this.core.index);
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554 | });
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555 | this.core.LGel.on(lGEvents.beforeOpen + ".zoom", function () {
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556 | _this.core.outer.find('.lg-item').removeClass('lg-zoomable');
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557 | });
|
558 | this.core.LGel.on(lGEvents.afterOpen + ".zoom", function () {
|
559 | _this.scrollTop = _this.$LG(window).scrollTop();
|
560 |
|
561 | _this.pageX = _this.core.outer.width() / 2;
|
562 | _this.pageY = _this.core.outer.height() / 2 + _this.scrollTop;
|
563 | _this.scale = 1;
|
564 | });
|
565 |
|
566 | this.core.LGel.on(lGEvents.afterSlide + ".zoom", function (event) {
|
567 | var prevIndex = event.detail.prevIndex;
|
568 | _this.scale = 1;
|
569 | _this.positionChanged = false;
|
570 | _this.resetZoom(prevIndex);
|
571 | if (_this.isImageSlide()) {
|
572 | _this.setZoomEssentials();
|
573 | }
|
574 | });
|
575 |
|
576 | this.zoomDrag();
|
577 | this.pinchZoom();
|
578 | this.zoomSwipe();
|
579 |
|
580 | this.zoomableTimeout = false;
|
581 | this.positionChanged = false;
|
582 | };
|
583 | Zoom.prototype.zoomIn = function (scale) {
|
584 |
|
585 | if (!this.isImageSlide()) {
|
586 | return;
|
587 | }
|
588 | if (scale) {
|
589 | this.scale = scale;
|
590 | }
|
591 | else {
|
592 | this.scale += this.settings.scale;
|
593 | }
|
594 | this.scale = this.getScale(this.scale);
|
595 | this.beginZoom(this.scale);
|
596 | this.zoomImage(this.scale);
|
597 | };
|
598 |
|
599 | Zoom.prototype.resetZoom = function (index) {
|
600 | this.core.outer.removeClass('lg-zoomed lg-zoom-drag-transition');
|
601 | var $actualSize = this.core.getElementById('lg-actual-size');
|
602 | var $item = this.core.getSlideItem(index !== undefined ? index : this.core.index);
|
603 | $actualSize
|
604 | .removeClass(this.settings.actualSizeIcons.zoomOut)
|
605 | .addClass(this.settings.actualSizeIcons.zoomIn);
|
606 | $item.find('.lg-img-wrap').first().removeAttr('style');
|
607 | $item.find('.lg-image').first().removeAttr('style');
|
608 | this.scale = 1;
|
609 | this.left = 0;
|
610 | this.top = 0;
|
611 |
|
612 | this.setPageCords();
|
613 | };
|
614 | Zoom.prototype.getTouchDistance = function (e) {
|
615 | return Math.sqrt((e.targetTouches[0].pageX - e.targetTouches[1].pageX) *
|
616 | (e.targetTouches[0].pageX - e.targetTouches[1].pageX) +
|
617 | (e.targetTouches[0].pageY - e.targetTouches[1].pageY) *
|
618 | (e.targetTouches[0].pageY - e.targetTouches[1].pageY));
|
619 | };
|
620 | Zoom.prototype.pinchZoom = function () {
|
621 | var _this = this;
|
622 | var startDist = 0;
|
623 | var pinchStarted = false;
|
624 | var initScale = 1;
|
625 | var $item = this.core.getSlideItem(this.core.index);
|
626 | this.core.$inner.on('touchstart.lg', function (e) {
|
627 | $item = _this.core.getSlideItem(_this.core.index);
|
628 | if (!_this.isImageSlide()) {
|
629 | return;
|
630 | }
|
631 | if (e.targetTouches.length === 2 &&
|
632 | !_this.core.outer.hasClass('lg-first-slide-loading') &&
|
633 | (_this.$LG(e.target).hasClass('lg-item') ||
|
634 | $item.get().contains(e.target))) {
|
635 | initScale = _this.scale || 1;
|
636 | _this.core.outer.removeClass('lg-zoom-drag-transition lg-zoom-dragging');
|
637 | _this.core.touchAction = 'pinch';
|
638 | startDist = _this.getTouchDistance(e);
|
639 | }
|
640 | });
|
641 | this.core.$inner.on('touchmove.lg', function (e) {
|
642 | if (e.targetTouches.length === 2 &&
|
643 | _this.core.touchAction === 'pinch' &&
|
644 | (_this.$LG(e.target).hasClass('lg-item') ||
|
645 | $item.get().contains(e.target))) {
|
646 | e.preventDefault();
|
647 | var endDist = _this.getTouchDistance(e);
|
648 | var distance = startDist - endDist;
|
649 | if (!pinchStarted && Math.abs(distance) > 5) {
|
650 | pinchStarted = true;
|
651 | }
|
652 | if (pinchStarted) {
|
653 | _this.scale = Math.max(1, initScale + -distance * 0.008);
|
654 | _this.zoomImage(_this.scale);
|
655 | }
|
656 | }
|
657 | });
|
658 | this.core.$inner.on('touchend.lg', function (e) {
|
659 | if (_this.core.touchAction === 'pinch' &&
|
660 | (_this.$LG(e.target).hasClass('lg-item') ||
|
661 | $item.get().contains(e.target))) {
|
662 | pinchStarted = false;
|
663 | startDist = 0;
|
664 | if (_this.scale <= 1) {
|
665 | _this.resetZoom();
|
666 | }
|
667 | else {
|
668 | _this.scale = _this.getScale(_this.scale);
|
669 | _this.zoomImage(_this.scale);
|
670 | _this.core.outer.addClass('lg-zoomed');
|
671 | }
|
672 | _this.core.touchAction = undefined;
|
673 | }
|
674 | });
|
675 | };
|
676 | Zoom.prototype.touchendZoom = function (startCoords, endCoords, allowX, allowY, touchDuration, rotateValue) {
|
677 | var distanceXnew = endCoords.x - startCoords.x;
|
678 | var distanceYnew = endCoords.y - startCoords.y;
|
679 | var speedX = Math.abs(distanceXnew) / touchDuration + 1;
|
680 | var speedY = Math.abs(distanceYnew) / touchDuration + 1;
|
681 | if (speedX > 2) {
|
682 | speedX += 1;
|
683 | }
|
684 | if (speedY > 2) {
|
685 | speedY += 1;
|
686 | }
|
687 | distanceXnew = distanceXnew * speedX;
|
688 | distanceYnew = distanceYnew * speedY;
|
689 | var _LGel = this.core
|
690 | .getSlideItem(this.core.index)
|
691 | .find('.lg-img-wrap')
|
692 | .first();
|
693 | var distance = {};
|
694 | distance.x = this.left + distanceXnew * this.modifierX;
|
695 | distance.y = this.top + distanceYnew * this.modifierY;
|
696 | var possibleSwipeCords = this.getPossibleSwipeDragCords(rotateValue);
|
697 | if (Math.abs(distanceXnew) > 15 || Math.abs(distanceYnew) > 15) {
|
698 | if (allowY) {
|
699 | if (this.isBeyondPossibleTop(distance.y, possibleSwipeCords.minY)) {
|
700 | distance.y = possibleSwipeCords.minY;
|
701 | }
|
702 | else if (this.isBeyondPossibleBottom(distance.y, possibleSwipeCords.maxY)) {
|
703 | distance.y = possibleSwipeCords.maxY;
|
704 | }
|
705 | }
|
706 | if (allowX) {
|
707 | if (this.isBeyondPossibleLeft(distance.x, possibleSwipeCords.minX)) {
|
708 | distance.x = possibleSwipeCords.minX;
|
709 | }
|
710 | else if (this.isBeyondPossibleRight(distance.x, possibleSwipeCords.maxX)) {
|
711 | distance.x = possibleSwipeCords.maxX;
|
712 | }
|
713 | }
|
714 | if (allowY) {
|
715 | this.top = distance.y;
|
716 | }
|
717 | else {
|
718 | distance.y = this.top;
|
719 | }
|
720 | if (allowX) {
|
721 | this.left = distance.x;
|
722 | }
|
723 | else {
|
724 | distance.x = this.left;
|
725 | }
|
726 | this.setZoomSwipeStyles(_LGel, distance);
|
727 | this.positionChanged = true;
|
728 | }
|
729 | };
|
730 | Zoom.prototype.getZoomSwipeCords = function (startCoords, endCoords, allowX, allowY, possibleSwipeCords) {
|
731 | var distance = {};
|
732 | if (allowY) {
|
733 | distance.y =
|
734 | this.top + (endCoords.y - startCoords.y) * this.modifierY;
|
735 | if (this.isBeyondPossibleTop(distance.y, possibleSwipeCords.minY)) {
|
736 | var diffMinY = possibleSwipeCords.minY - distance.y;
|
737 | distance.y = possibleSwipeCords.minY - diffMinY / 6;
|
738 | }
|
739 | else if (this.isBeyondPossibleBottom(distance.y, possibleSwipeCords.maxY)) {
|
740 | var diffMaxY = distance.y - possibleSwipeCords.maxY;
|
741 | distance.y = possibleSwipeCords.maxY + diffMaxY / 6;
|
742 | }
|
743 | }
|
744 | else {
|
745 | distance.y = this.top;
|
746 | }
|
747 | if (allowX) {
|
748 | distance.x =
|
749 | this.left + (endCoords.x - startCoords.x) * this.modifierX;
|
750 | if (this.isBeyondPossibleLeft(distance.x, possibleSwipeCords.minX)) {
|
751 | var diffMinX = possibleSwipeCords.minX - distance.x;
|
752 | distance.x = possibleSwipeCords.minX - diffMinX / 6;
|
753 | }
|
754 | else if (this.isBeyondPossibleRight(distance.x, possibleSwipeCords.maxX)) {
|
755 | var difMaxX = distance.x - possibleSwipeCords.maxX;
|
756 | distance.x = possibleSwipeCords.maxX + difMaxX / 6;
|
757 | }
|
758 | }
|
759 | else {
|
760 | distance.x = this.left;
|
761 | }
|
762 | return distance;
|
763 | };
|
764 | Zoom.prototype.isBeyondPossibleLeft = function (x, minX) {
|
765 | return x >= minX;
|
766 | };
|
767 | Zoom.prototype.isBeyondPossibleRight = function (x, maxX) {
|
768 | return x <= maxX;
|
769 | };
|
770 | Zoom.prototype.isBeyondPossibleTop = function (y, minY) {
|
771 | return y >= minY;
|
772 | };
|
773 | Zoom.prototype.isBeyondPossibleBottom = function (y, maxY) {
|
774 | return y <= maxY;
|
775 | };
|
776 | Zoom.prototype.isImageSlide = function () {
|
777 | var currentItem = this.core.galleryItems[this.core.index];
|
778 | return this.core.getSlideType(currentItem) === 'image';
|
779 | };
|
780 | Zoom.prototype.getPossibleSwipeDragCords = function (rotateValue, scale) {
|
781 | var dataScale = scale || this.scale || 1;
|
782 | var elDataScale = Math.abs(dataScale);
|
783 | var _a = this.core.mediaContainerPosition, top = _a.top, bottom = _a.bottom;
|
784 | var topBottomSpacing = Math.abs(top - bottom) / 2;
|
785 | var minY = (this.imageYSize - this.containerRect.height) / 2 +
|
786 | topBottomSpacing * this.modifierX;
|
787 | var maxY = this.containerRect.height - this.imageYSize * elDataScale + minY;
|
788 | var minX = (this.imageXSize - this.containerRect.width) / 2;
|
789 | var maxX = this.containerRect.width - this.imageXSize * elDataScale + minX;
|
790 | var possibleSwipeCords = {
|
791 | minY: minY,
|
792 | maxY: maxY,
|
793 | minX: minX,
|
794 | maxX: maxX,
|
795 | };
|
796 | if (Math.abs(rotateValue) === 90) {
|
797 | possibleSwipeCords = {
|
798 | minY: minX,
|
799 | maxY: maxX,
|
800 | minX: minY,
|
801 | maxX: maxY,
|
802 | };
|
803 | }
|
804 | return possibleSwipeCords;
|
805 | };
|
806 | Zoom.prototype.setZoomSwipeStyles = function (LGel, distance) {
|
807 | LGel.css('transform', 'translate3d(' + distance.x + 'px, ' + distance.y + 'px, 0)');
|
808 | };
|
809 | Zoom.prototype.zoomSwipe = function () {
|
810 | var _this = this;
|
811 | var startCoords = {};
|
812 | var endCoords = {};
|
813 | var isMoved = false;
|
814 |
|
815 | var allowX = false;
|
816 |
|
817 | var allowY = false;
|
818 | var startTime = new Date();
|
819 | var endTime = new Date();
|
820 | var possibleSwipeCords;
|
821 | var _LGel;
|
822 | var $item = this.core.getSlideItem(this.core.index);
|
823 | this.core.$inner.on('touchstart.lg', function (e) {
|
824 |
|
825 | if (!_this.isImageSlide()) {
|
826 | return;
|
827 | }
|
828 | $item = _this.core.getSlideItem(_this.core.index);
|
829 | if ((_this.$LG(e.target).hasClass('lg-item') ||
|
830 | $item.get().contains(e.target)) &&
|
831 | e.targetTouches.length === 1 &&
|
832 | _this.core.outer.hasClass('lg-zoomed')) {
|
833 | e.preventDefault();
|
834 | startTime = new Date();
|
835 | _this.core.touchAction = 'zoomSwipe';
|
836 | _LGel = _this.core
|
837 | .getSlideItem(_this.core.index)
|
838 | .find('.lg-img-wrap')
|
839 | .first();
|
840 | var dragAllowedAxises = _this.getDragAllowedAxises(Math.abs(_this.rotateValue));
|
841 | allowY = dragAllowedAxises.allowY;
|
842 | allowX = dragAllowedAxises.allowX;
|
843 | if (allowX || allowY) {
|
844 | startCoords = _this.getSwipeCords(e, Math.abs(_this.rotateValue));
|
845 | }
|
846 | possibleSwipeCords = _this.getPossibleSwipeDragCords(_this.rotateValue);
|
847 |
|
848 | _this.core.outer.addClass('lg-zoom-dragging lg-zoom-drag-transition');
|
849 | }
|
850 | });
|
851 | this.core.$inner.on('touchmove.lg', function (e) {
|
852 | if (e.targetTouches.length === 1 &&
|
853 | _this.core.touchAction === 'zoomSwipe' &&
|
854 | (_this.$LG(e.target).hasClass('lg-item') ||
|
855 | $item.get().contains(e.target))) {
|
856 | e.preventDefault();
|
857 | _this.core.touchAction = 'zoomSwipe';
|
858 | endCoords = _this.getSwipeCords(e, Math.abs(_this.rotateValue));
|
859 | var distance = _this.getZoomSwipeCords(startCoords, endCoords, allowX, allowY, possibleSwipeCords);
|
860 | if (Math.abs(endCoords.x - startCoords.x) > 15 ||
|
861 | Math.abs(endCoords.y - startCoords.y) > 15) {
|
862 | isMoved = true;
|
863 | _this.setZoomSwipeStyles(_LGel, distance);
|
864 | }
|
865 | }
|
866 | });
|
867 | this.core.$inner.on('touchend.lg', function (e) {
|
868 | if (_this.core.touchAction === 'zoomSwipe' &&
|
869 | (_this.$LG(e.target).hasClass('lg-item') ||
|
870 | $item.get().contains(e.target))) {
|
871 | _this.core.touchAction = undefined;
|
872 | _this.core.outer.removeClass('lg-zoom-dragging');
|
873 | if (!isMoved) {
|
874 | return;
|
875 | }
|
876 | isMoved = false;
|
877 | endTime = new Date();
|
878 | var touchDuration = endTime.valueOf() - startTime.valueOf();
|
879 | _this.touchendZoom(startCoords, endCoords, allowX, allowY, touchDuration, _this.rotateValue);
|
880 | }
|
881 | });
|
882 | };
|
883 | Zoom.prototype.zoomDrag = function () {
|
884 | var _this = this;
|
885 | var startCoords = {};
|
886 | var endCoords = {};
|
887 | var isDragging = false;
|
888 | var isMoved = false;
|
889 |
|
890 | var allowX = false;
|
891 |
|
892 | var allowY = false;
|
893 | var startTime;
|
894 | var endTime;
|
895 | var possibleSwipeCords;
|
896 | var _LGel;
|
897 | this.core.outer.on('mousedown.lg.zoom', function (e) {
|
898 |
|
899 | if (!_this.isImageSlide()) {
|
900 | return;
|
901 | }
|
902 | var $item = _this.core.getSlideItem(_this.core.index);
|
903 | if (_this.$LG(e.target).hasClass('lg-item') ||
|
904 | $item.get().contains(e.target)) {
|
905 | startTime = new Date();
|
906 | _LGel = _this.core
|
907 | .getSlideItem(_this.core.index)
|
908 | .find('.lg-img-wrap')
|
909 | .first();
|
910 | var dragAllowedAxises = _this.getDragAllowedAxises(Math.abs(_this.rotateValue));
|
911 | allowY = dragAllowedAxises.allowY;
|
912 | allowX = dragAllowedAxises.allowX;
|
913 | if (_this.core.outer.hasClass('lg-zoomed')) {
|
914 | if (_this.$LG(e.target).hasClass('lg-object') &&
|
915 | (allowX || allowY)) {
|
916 | e.preventDefault();
|
917 | startCoords = _this.getDragCords(e, Math.abs(_this.rotateValue));
|
918 | possibleSwipeCords = _this.getPossibleSwipeDragCords(_this.rotateValue);
|
919 | isDragging = true;
|
920 |
|
921 | _this.core.outer.get().scrollLeft += 1;
|
922 | _this.core.outer.get().scrollLeft -= 1;
|
923 | _this.core.outer
|
924 | .removeClass('lg-grab')
|
925 | .addClass('lg-grabbing lg-zoom-drag-transition lg-zoom-dragging');
|
926 |
|
927 | }
|
928 | }
|
929 | }
|
930 | });
|
931 | this.$LG(window).on("mousemove.lg.zoom.global" + this.core.lgId, function (e) {
|
932 | if (isDragging) {
|
933 | isMoved = true;
|
934 | endCoords = _this.getDragCords(e, Math.abs(_this.rotateValue));
|
935 | var distance = _this.getZoomSwipeCords(startCoords, endCoords, allowX, allowY, possibleSwipeCords);
|
936 | _this.setZoomSwipeStyles(_LGel, distance);
|
937 | }
|
938 | });
|
939 | this.$LG(window).on("mouseup.lg.zoom.global" + this.core.lgId, function (e) {
|
940 | if (isDragging) {
|
941 | endTime = new Date();
|
942 | isDragging = false;
|
943 | _this.core.outer.removeClass('lg-zoom-dragging');
|
944 |
|
945 | if (isMoved &&
|
946 | (startCoords.x !== endCoords.x ||
|
947 | startCoords.y !== endCoords.y)) {
|
948 | endCoords = _this.getDragCords(e, Math.abs(_this.rotateValue));
|
949 | var touchDuration = endTime.valueOf() - startTime.valueOf();
|
950 | _this.touchendZoom(startCoords, endCoords, allowX, allowY, touchDuration, _this.rotateValue);
|
951 | }
|
952 | isMoved = false;
|
953 | }
|
954 | _this.core.outer.removeClass('lg-grabbing').addClass('lg-grab');
|
955 | });
|
956 | };
|
957 | Zoom.prototype.closeGallery = function () {
|
958 | this.resetZoom();
|
959 | };
|
960 | Zoom.prototype.destroy = function () {
|
961 |
|
962 | this.$LG(window).off(".lg.zoom.global" + this.core.lgId);
|
963 | this.core.LGel.off('.lg.zoom');
|
964 | this.core.LGel.off('.zoom');
|
965 | clearTimeout(this.zoomableTimeout);
|
966 | this.zoomableTimeout = false;
|
967 | };
|
968 | return Zoom;
|
969 | }());
|
970 |
|
971 | return Zoom;
|
972 |
|
973 | })));
|
974 |
|