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Deal with null images

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This commit is contained in:
Éric Lemoine
2013-02-17 23:07:58 +01:00
parent be6c1a1a27
commit d713c9b8ed
3 changed files with 36 additions and 31 deletions
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19
src/ol/renderer/canvas/canvasimagelayerrenderer.js
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@@ -79,15 +79,16 @@ ol.renderer.canvas.ImageLayer.prototype.renderFrame =
var hints = frameState.viewHints;
if (!hints[ol.ViewHint.ANIMATING] && !hints[ol.ViewHint.PANNING]) {
image = imageSource.getImage(
frameState.extent, viewResolution);
var imageState = image.getState();
if (imageState == ol.ImageState.IDLE) {
goog.events.listenOnce(image, goog.events.EventType.CHANGE,
this.handleImageChange, false, this);
image.load();
} else if (imageState == ol.ImageState.LOADED) {
this.image_ = image;
image = imageSource.getImage(frameState.extent, viewResolution);
if (!goog.isNull(image)) {
var imageState = image.getState();
if (imageState == ol.ImageState.IDLE) {
goog.events.listenOnce(image, goog.events.EventType.CHANGE,
this.handleImageChange, false, this);
image.load();
} else if (imageState == ol.ImageState.LOADED) {
this.image_ = image;
}
}
}