Merge branch 'master' of https://github.com/SuperMap/iClient-JavaScript

Author: yuzhiyao

dist/classic/iclient-classic-es6.js

@@ -7782,7 +7782,7 @@ class MapVLayer_MapVLayer extends SuperMap_SuperMap.Layer {
         this.canvasContext = this.canvas.getContext(context);
         var global$2 = typeof window === 'undefined' ? {} : window;
         var devicePixelRatio = this.devicePixelRatio = global$2.devicePixelRatio;
-        if (this.options.context == '2d') {
+        if (context == '2d') {
             this.canvasContext.scale(devicePixelRatio, devicePixelRatio);
         }
         this.attribution = "© 2018 百度 <a href='http://mapv.baidu.com' target='_blank'>MapV</a> with <span>© <a target='_blank' href='http://iclient.supermap.io' " +

dist/classic/iclient-classic-es6.min.js

@@ -10378,7 +10378,7 @@ var MapVLayer = exports.MapVLayer = function (_SuperMap$Layer) {
         _this.canvasContext = _this.canvas.getContext(context);
         var global$2 = typeof window === 'undefined' ? {} : window;
         var devicePixelRatio = _this.devicePixelRatio = global$2.devicePixelRatio;
-        if (_this.options.context == '2d') {
+        if (context == '2d') {
             _this.canvasContext.scale(devicePixelRatio, devicePixelRatio);
         }
         _this.attribution = "© 2018 百度 <a href='http://mapv.baidu.com' target='_blank'>MapV</a> with <span>© <a target='_blank' href='http://iclient.supermap.io' " + "style='color: #08c;text-decoration: none;'>SuperMap iClient</a></span>";