import * as L from '@mapgis/leaflet'
/**
* @author 基础平台/产品2部 龚跃健
* @class Zondy.Map.BaiduTileLayer
* @classdesc 百度地图加载类
* @extends L.TileLayer
* @param option - {Object} 属性键值对，地图属性字段。
* @param {Number} [option.minZoom = 3] 可选。显示此图层的最小缩放级别
* @param {Number} [option.maxZoom = 18] 可选。显示此图层的最大缩放级别
* @param {String} [option.subdomains = [0, 1, 2]] 可选。服务的子域。 一个字符串（每个字母是子域名）或字符串数组。
* @param {String} [option.errorTileUrl = ] 可选。要显示的图块图像的URL，以代替无法加载的图块。
* @param {String} [option.zoomOffset = 0 ] 可选。缩放偏移量。
* @param {Boolean} [option.tms = true] 可选。如果是'true`，则反转tile的Y轴编号（启动[TMS]（https://en.wikipedia.org/wiki/Tile_Map_Service）服务）。
* @param {Boolean} [option.zoomReverse = false] 可选。如果设置为true，则平铺URL中使用的缩放编号将被反转（`maxZoom - zoom`而不是`zoom`）
* @param {Boolean} [option.detectRetina = false] 可选。如果设置为`true`，并且用户在视网膜显示器上浏览，将使用指定大小一半大的四个瓦片来显示，以达到高分辨率的显示。
* @param {Boolean} [option.crossOrigin = false] 可选。是否将crossOrigin属性添加到切片中。如果要访问平铺像素数据，则所有tile都将其crossOrigin属性设置为提供的String。有关有效的字符串值，请参阅[CORS设置]（https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_settings_attributes）。
* @param {String} [option.baidukey = HmkUGKETQBkEcd6aj3udNZ3W5hKXmXSi ] 必选。百度key
* @param {String} [option.id = dark] 必选。可设置为dark,light,street
*/
const BaiduTileLayer = L.TileLayer.extend({
style: {
light: 'light',
visualization: 'visualization',
redalert: 'redalert',
grassgreen: 'grassgreen',
pink: 'pink',
bluish: 'bluish',
darkgreen: 'darkgreen',
grayscale: 'grayscale',
hardedge: 'hardedge',
midnight: 'midnight',
default: 'pl'
},
url: 'http://api2.map.bdimg.com/customimage/tile?&udt=20180601&scale=1&x={x}&y={y}&z={z}&ak={baidukey}&styles={styles}',
options: {
// @option minZoom: Number = 3
// The minimum zoom level down to which this layer will be displayed (inclusive).
minZoom: 3,
// @option maxZoom: Number = 18
// The maximum zoom level up to which this layer will be displayed (inclusive).
maxZoom: 18,
// @option subdomains: String|String[] = 'abc'
// Subdomains of the tile service. Can be passed in the form of one string (where each letter is a subdomain name) or an array of strings.
subdomains: '0123456789',
// @option errorTileUrl: String = ''
// URL to the tile image to show in place of the tile that failed to load.
errorTileUrl: '',
// @option zoomOffset: Number = 0
// The zoom number used in tile URLs will be offset with this value.
zoomOffset: 0,
// @option tms: Boolean = false
// If `true`, inverses Y axis numbering for tiles (turn this on for [TMS](https://en.wikipedia.org/wiki/Tile_Map_Service) services).
tms: true,
// @option zoomReverse: Boolean = false
// If set to true, the zoom number used in tile URLs will be reversed (`maxZoom - zoom` instead of `zoom`)
zoomReverse: false,
// @option detectRetina: Boolean = false
// If `true` and user is on a retina display, it will request four tiles of half the specified size and a bigger zoom level in place of one to utilize the high resolution.
detectRetina: false,
// @option crossOrigin: Boolean|String = false
// Whether the crossOrigin attribute will be added to the tiles.
// If a String is provided, all tiles will have their crossOrigin attribute set to the String provided. This is needed if you want to access tile pixel data.
// Refer to [CORS Settings](https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_settings_attributes) for valid String values.
crossOrigin: false,
baidukey: 'HmkUGKETQBkEcd6aj3udNZ3W5hKXmXSi',
// dark,light,street
id: 'dark',
styles: 'pl'
},
initialize(options) {
L.setOptions(this, options)
},
onAdd(map) {
L.TileLayer.prototype.onAdd.call(this, map)
},
_getSubdomain(tilePoint) {
const index =
Math.abs(tilePoint.x + tilePoint.y) % this.options.subdomains.length
return this.options.subdomains[index]
},
/**
* @private
* @function Zondy.Map.BaiduTileLayer.prototype.getTileUrl
* @description 根据行列号获取瓦片地址
* @param coords - {Object} 行列号
* @return {string} 瓦片地址
*/
getTileUrl(coords) {
const data = {
s: this._getSubdomain(coords),
x: coords.x,
y: coords.y,
z: this._getZoomForUrl(),
styles: this.options.styles,
ak: this.options.baidukey
}
if (this._map && !this._map.options.crs.infinite) {
const invertedY = this._globalTileRange.max.y - coords.y
if (this.options.tms) {
data['y'] = invertedY
}
data['-y'] = invertedY
}
return L.Util.template(this.url, L.Util.extend(data, this.options))
}
})
class BaiduLayerUtil {}
BaiduLayerUtil.addBaiduLayer = function (layer, mapView) {
const baiduLayer = new BaiduTileLayer({
// 地图风格
styles: layer.styles,
// 百度key
baidukey: layer.baidukey
}).addTo(mapView)
return baiduLayer
}
export default BaiduLayerUtil
