@mapgis/webclient-leaflet-plugin
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<h1> MapGIS Client for JavaScript API</h1>
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<div class="category"><div style="font-weight: bold;vertical-align: middle;padding: 0.4rem 0;" class="mapgis-menu-span"><img style="width: 20px;margin-right: 6px;vertical-align: middle;" src="./styles/m.png" alt="">视图模块</div><ul class="mapgis-sidebar-menus"><li><img style="width: 20px;margin-right: 6px;vertical-align: middle;" src="./styles/c.png" alt=""><a href="DrawControl.html">DrawControl</a><span style="display: none;"><p>绘制工具</p></span></li><li><img style="width: 20px;margin-right: 6px;vertical-align: middle;" src="./styles/c.png" alt=""><a href="MapView.html">MapView</a><span style="display: none;"><p>二维场景视图(leaflet引擎)，对地图引擎进行管理，如果要对地图图层进行管理请参考[Map]{@link Map}，<br/>
参考示例：
<a href='#MapView'>[初始化二维场景视图]</a>
<br>[ES5引入方式]：<br/>
Zondy.MapView() <br/>
[ES6引入方式]：<br/>
import { MapView } from '@mapgis/webclient-leaflet-plugin' <br/></p></span></li><li><img style="width: 20px;margin-right: 6px;vertical-align: middle;" src="./styles/c.png" alt=""><a href="Popup.html">Popup</a><span style="display: none;"><p>二维场景信息弹窗(leaflet引擎)
参考示例：
<a href='#MapView'>[初始化二维场景视图]</a>
[ES6引入方式]：<br/>
import { Popup } from '@mapgis/webclient-leaflet-plugin' <br/>
自定义样式说明：<br/>
zondy-popup__content 弹窗容器样式<br/>
zondy-popup__tip 弹窗对话框箭头样式<br/>
zondy-popup__header 弹窗头部样式<br/>
zondy-popup__content 弹窗主体样式<br/>
zondy-popup__footer 弹窗底部样式<br/></p></span></li><li><img style="width: 20px;margin-right: 6px;vertical-align: middle;" src="./styles/c.png" alt=""><a href="Screenshot.html">Screenshot</a><span style="display: none;"><p>屏幕打印工具</p></span></li></ul><div style="font-weight: bold;vertical-align: middle;padding: 0.4rem 0;" class="mapgis-menu-span"><img style="width: 20px;margin-right: 6px;vertical-align: middle;" src="./styles/m.png" alt="">草图编辑模块</div><ul class="mapgis-sidebar-menus"><li><img style="width: 20px;margin-right: 6px;vertical-align: middle;" src="./styles/c.png" alt=""><a href="SketchEditorLeaflet.html">SketchEditorLeaflet</a><span style="display: none;"><p>二维场景草图编辑类<br/>
<br>[ES5引入方式]：<br/>
const { SketchEditorLeaflet } = Zondy <br/>
[ES6引入方式]：<br/>
import { SketchEditorLeaflet } from "@mapgis/webclient-leaflet-plugin" <br/></p></span></li></ul><div style="font-weight: bold;vertical-align: middle;padding: 0.4rem 0;" class="mapgis-menu-span"><img style="width: 20px;margin-right: 6px;vertical-align: middle;" src="./styles/m.png" alt="">渲染器模块</div><ul class="mapgis-sidebar-menus"><li><img style="width: 20px;margin-right: 6px;vertical-align: middle;" src="./styles/c.png" alt=""><a href="Zondy.ThemeLayer.GraphThemeLayer.html">GraphThemeLayer</a><span style="display: none;"><p>统计专题图通过为每个要素绘制统计图表来反映其对应的专题值的大小。它可同时表示多个字段属性信息，在区域本身与各区域之间形成横向和纵向的对比。<br>统计专题图多用于具有相关数量特征的地图上，比如表示不同地区多年的粮食产量、GDP、人口等，不同时段客运量、地铁流量等。目前提供的统计图类型有：柱状图（Bar），折线图（Line），饼图（Pie），三维柱状图（Bar3D），点状图（Point），环状图（Ring）。</p></span></li></ul></div>
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<span class="page-title-sub">view/utils/BaiduLayerUtil.js</span>
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<pre class="prettyprint source linenums"><code>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
</code></pre>
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