bmap.min.js

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/


!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports,require("echarts")):"function"==typeof define&&define.amd?define(["exports","echarts"],e):e(t.bmap={},t.echarts)}(this,function(t,e){"use strict";function o(t,e){this._bmap=t,this.dimensions=["lng","lat"],this._mapOffset=[0,0],this._api=e,this._projection=new BMap.MercatorProjection}function n(t,o){return o=o||[0,0],e.util.map([0,1],function(e){var n=o[e],i=t[e]/2,a=[],r=[];return a[e]=n-i,r[e]=n+i,a[1-e]=r[1-e]=o[1-e],Math.abs(this.dataToPoint(a)[e]-this.dataToPoint(r)[e])},this)}function i(){function t(t){this._root=t}return t.prototype=new BMap.Overlay,t.prototype.initialize=function(t){return t.getPanes().labelPane.appendChild(this._root),this._root},t.prototype.draw=function(){},t}function a(t,e){return t&&e&&t[0]===e[0]&&t[1]===e[1]}o.prototype.dimensions=["lng","lat"],o.prototype.setZoom=function(t){this._zoom=t},o.prototype.setCenter=function(t){this._center=this._projection.lngLatToPoint(new BMap.Point(t[0],t[1]))},o.prototype.setMapOffset=function(t){this._mapOffset=t},o.prototype.getBMap=function(){return this._bmap},o.prototype.dataToPoint=function(t){var e=new BMap.Point(t[0],t[1]),o=this._bmap.pointToOverlayPixel(e),n=this._mapOffset;return[o.x-n[0],o.y-n[1]]},o.prototype.pointToData=function(t){var e=this._mapOffset;return[(t=this._bmap.overlayPixelToPoint({x:t[0]+e[0],y:t[1]+e[1]})).lng,t.lat]},o.prototype.getViewRect=function(){var t=this._api;return new e.graphic.BoundingRect(0,0,t.getWidth(),t.getHeight())},o.prototype.getRoamTransform=function(){return e.matrix.create()},o.prototype.prepareCustoms=function(t){var o=this.getViewRect();return{coordSys:{type:"bmap",x:o.x,y:o.y,width:o.width,height:o.height},api:{coord:e.util.bind(this.dataToPoint,this),size:e.util.bind(n,this)}}};var r;o.dimensions=o.prototype.dimensions,o.create=function(t,e){var n,a=e.getDom();t.eachComponent("bmap",function(t){var p=e.getZr().painter,s=p.getViewportRoot();if("undefined"==typeof BMap)throw new Error("BMap api is not loaded");if(r=r||i(),n)throw new Error("Only one bmap component can exist");if(!t.__bmap){var m=a.querySelector(".ec-extension-bmap");m&&(s.style.left="0px",s.style.top="0px",a.removeChild(m)),(m=document.createElement("div")).style.cssText="width:100%;height:100%",m.classList.add("ec-extension-bmap"),a.appendChild(m);var c=t.__bmap=new BMap.Map(m),d=new r(s);c.addOverlay(d),p.getViewportRootOffset=function(){return{offsetLeft:0,offsetTop:0}}}var c=t.__bmap,f=t.get("center"),l=t.get("zoom");if(f&&l){var h=new BMap.Point(f[0],f[1]);c.centerAndZoom(h,l)}(n=new o(c,e)).setMapOffset(t.__mapOffset||[0,0]),n.setZoom(l),n.setCenter(f),t.coordinateSystem=n}),t.eachSeries(function(t){"bmap"===t.get("coordinateSystem")&&(t.coordinateSystem=n)})},e.extendComponentModel({type:"bmap",getBMap:function(){return this.__bmap},setCenterAndZoom:function(t,e){this.option.center=t,this.option.zoom=e},centerOrZoomChanged:function(t,e){var o=this.option;return!(a(t,o.center)&&e===o.zoom)},defaultOption:{center:[104.114129,37.550339],zoom:5,mapStyle:{},roam:!1}}),e.extendComponentView({type:"bmap",render:function(t,e,o){function n(){i||o.dispatchAction({type:"bmapRoam"})}var i=!0,a=t.getBMap(),r=o.getZr().painter.getViewportRoot(),p=t.coordinateSystem,s=function(e,n){if(!i){var a=r.parentNode.parentNode.parentNode,s=[-parseInt(a.style.left,10)||0,-parseInt(a.style.top,10)||0];r.style.left=s[0]+"px",r.style.top=s[1]+"px",p.setMapOffset(s),t.__mapOffset=s,o.dispatchAction({type:"bmapRoam"})}};a.removeEventListener("moving",this._oldMoveHandler),a.removeEventListener("zoomend",this._oldZoomEndHandler),a.addEventListener("moving",s),a.addEventListener("zoomend",n),this._oldMoveHandler=s,this._oldZoomEndHandler=n;var m=t.get("roam");m&&"scale"!==m?a.enableDragging():a.disableDragging(),m&&"move"!==m?(a.enableScrollWheelZoom(),a.enableDoubleClickZoom(),a.enablePinchToZoom()):(a.disableScrollWheelZoom(),a.disableDoubleClickZoom(),a.disablePinchToZoom());var c=t.__mapStyle,d=t.get("mapStyle")||{},f=JSON.stringify(d);JSON.stringify(c)!==f&&(Object.keys(d).length&&a.setMapStyle(d),t.__mapStyle=JSON.parse(f)),i=!1}}),e.registerCoordinateSystem("bmap",o),e.registerAction({type:"bmapRoam",event:"bmapRoam",update:"updateLayout"},function(t,e){e.eachComponent("bmap",function(t){var e=t.getBMap(),o=e.getCenter();t.setCenterAndZoom([o.lng,o.lat],e.getZoom())})});t.version="1.0.0"});