fix errorUrl loop

fuzhenn · fuzhenn · commit 38bf8380b023 · 2020-10-21T20:49:01.000+08:00
diff --git a/src/renderer/layer/tilelayer/TileLayerCanvasRenderer.js b/src/renderer/layer/tilelayer/TileLayerCanvasRenderer.js
@@ -443,8 +443,9 @@ class TileLayerCanvasRenderer extends CanvasRenderer {
             return;
         }
         if (tileImage instanceof Image) {
-            if (this.layer.options['errorUrl']) {
-                tileImage.src = this.layer.options['errorUrl'];
+            const errorUrl = this.layer.options['errorUrl'];
+            if (errorUrl && tileImage.src !== errorUrl) {
+                tileImage.src = errorUrl;
                 return;
             }
             this.abortTileLoading(tileImage, tileInfo);

Original file line number	Diff line number	Diff line change
`@@ -443,8 +443,9 @@ class TileLayerCanvasRenderer extends CanvasRenderer {`
`443`	`443`	`return;`
`444`	`444`	`}`
`445`	`445`	`if (tileImage instanceof Image) {`
`446`		`- if (this.layer.options['errorUrl']) {`
`447`		`- tileImage.src = this.layer.options['errorUrl'];`
	`446`	`+ const errorUrl = this.layer.options['errorUrl'];`
	`447`	`+ if (errorUrl && tileImage.src !== errorUrl) {`
	`448`	`+ tileImage.src = errorUrl;`
`448`	`449`	`return;`
`449`	`450`	`}`
`450`	`451`	`this.abortTileLoading(tileImage, tileInfo);`