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File: vendors/gentelella/vendors/echarts/extension/bmap/BMapCoordSys.js

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File: vendors/gentelella/vendors/echarts/extension/bmap/BMapCoordSys.js
Role: Auxiliary data
Content type: text/plain
Description: Auxiliary data
Class: Gentelella BladeOne
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Date: 3 years ago
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define(function (require) { var echarts = require('echarts'); function BMapCoordSys(bmap, api) { this._bmap = bmap; this.dimensions = ['lng', 'lat']; this._mapOffset = [0, 0]; this._api = api; } BMapCoordSys.prototype.dimensions = ['lng', 'lat']; BMapCoordSys.prototype.setMapOffset = function (mapOffset) { this._mapOffset = mapOffset; }; BMapCoordSys.prototype.getBMap = function () { return this._bmap; }; BMapCoordSys.prototype.dataToPoint = function (data) { var point = new BMap.Point(data[0], data[1]); var px = this._bmap.pointToOverlayPixel(point); var mapOffset = this._mapOffset; return [px.x - mapOffset[0], px.y - mapOffset[1]]; }; BMapCoordSys.prototype.pointToData = function (pt) { var mapOffset = this._mapOffset; var pt = this._bmap.overlayPixelToPoint({ x: pt[0] + mapOffset[0], y: pt[1] + mapOffset[1] }); return [pt.lng, pt.lat]; }; BMapCoordSys.prototype.getViewRect = function () { var api = this._api; return new echarts.graphic.BoundingRect(0, 0, api.getWidth(), api.getHeight()); }; BMapCoordSys.prototype.getRoamTransform = function () { return echarts.matrix.create(); }; var Overlay; // For deciding which dimensions to use when creating list data BMapCoordSys.dimensions = BMapCoordSys.prototype.dimensions; function createOverlayCtor() { function Overlay(root) { this._root = root; } Overlay.prototype = new BMap.Overlay(); /** * ??? * * @param {BMap.Map} map * @override */ Overlay.prototype.initialize = function (map) { map.getPanes().labelPane.appendChild(this._root); return this._root; }; /** * @override */ Overlay.prototype.draw = function () {}; return Overlay; } BMapCoordSys.create = function (ecModel, api) { var bmapCoordSys; var root = api.getDom(); // TODO Dispose ecModel.eachComponent('bmap', function (bmapModel) { var viewportRoot = api.getZr().painter.getViewportRoot(); if (typeof BMap === 'undefined') { throw new Error('BMap api is not loaded'); } Overlay = Overlay || createOverlayCtor(); if (bmapCoordSys) { throw new Error('Only one bmap component can exist'); } if (!bmapModel.__bmap) { // Not support IE8 var bmapRoot = root.querySelector('.ec-extension-bmap'); if (bmapRoot) { // Reset viewport left and top, which will be changed // in moving handler in BMapView viewportRoot.style.left = '0px'; viewportRoot.style.top = '0px'; root.removeChild(bmapRoot); } bmapRoot = document.createElement('div'); bmapRoot.style.cssText = 'width:100%;height:100%'; // Not support IE8 bmapRoot.classList.add('ec-extension-bmap'); root.appendChild(bmapRoot); var bmap = bmapModel.__bmap = new BMap.Map(bmapRoot); var overlay = new Overlay(viewportRoot); bmap.addOverlay(overlay); } var bmap = bmapModel.__bmap; // Set bmap options // centerAndZoom before layout and render var center = bmapModel.get('center'); var zoom = bmapModel.get('zoom'); if (center && zoom) { var pt = new BMap.Point(center[0], center[1]); bmap.centerAndZoom(pt, zoom); } bmapCoordSys = new BMapCoordSys(bmap, api); bmapCoordSys.setMapOffset(bmapModel.__mapOffset || [0, 0]); bmapModel.coordinateSystem = bmapCoordSys; }); ecModel.eachSeries(function (seriesModel) { if (seriesModel.get('coordinateSystem') === 'bmap') { seriesModel.coordinateSystem = bmapCoordSys; } }); }; return BMapCoordSys; });