ashatora/openlayers
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Use data URI instead of whole empty image

Browse Source
This commit is contained in:
Andreas Hocevar
2017-08-17 10:43:29 -04:00
parent 2566c50a10
commit 2a117cce8f
2 changed files with 8 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
src/ol/imagetile.js
View File

@@ -60,7 +60,7 @@ ol.inherits(ol.ImageTile, ol.Tile);
ol.ImageTile.prototype.disposeInternal = function() {
if (this.state == ol.TileState.LOADING) {
this.unlistenImage_();
this.image_.src = ol.ImageTile.blankImage.toDataURL('image/png');
this.image_.src = ol.ImageTile.blankImageUrl;
}
if (this.interimTile) {
this.interimTile.dispose();
@@ -97,7 +97,7 @@ ol.ImageTile.prototype.getKey = function() {
ol.ImageTile.prototype.handleImageError_ = function() {
this.state = ol.TileState.ERROR;
this.unlistenImage_();
this.image_ = ol.ImageTile.blankImage;
this.image_.src = ol.ImageTile.blankImageUrl;
this.changed();
};
@@ -149,12 +149,12 @@ ol.ImageTile.prototype.unlistenImage_ = function() {
/**
* A blank image.
* @type {HTMLCanvasElement}
* Data URI for a blank image.
* @type {string}
*/
ol.ImageTile.blankImage = (function() {
ol.ImageTile.blankImageUrl = (function() {
var ctx = ol.dom.createCanvasContext2D(1, 1);
ctx.fillStyle = 'rgba(0,0,0,0)';
ctx.fillRect(0, 0, 1, 1);
return ctx.canvas;
return ctx.canvas.toDataURL('image/png');
})();