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

Reset image when empty

Browse Source
This commit is contained in:
Andreas Hocevar
2022-03-10 16:27:24 +01:00
parent 7d9cf83efe
commit 46ddbd7e0e
2 changed files with 22 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/ol/renderer/canvas/ImageLayer.js
View File

@@ -2,6 +2,7 @@
* @module ol/renderer/canvas/ImageLayer
*/
import CanvasLayerRenderer from './Layer.js';
import ImageState from '../../ImageState.js';
import ViewHint from '../../ViewHint.js';
import {ENABLE_RASTER_REPROJECTION} from '../../reproj/common.js';
import {IMAGE_SMOOTHING_DISABLED, IMAGE_SMOOTHING_ENABLED} from './common.js';
@@ -91,8 +92,12 @@ class CanvasImageLayerRenderer extends CanvasLayerRenderer {
pixelRatio,
projection
);
if (image && this.loadImage(image)) {
if (image) {
if (this.loadImage(image)) {
this.image_ = image;
} else if (image.getState() === ImageState.EMPTY) {
this.image_ = null;
}
}
} else {
this.image_ = null;

15
test/browser/spec/ol/renderer/canvas/ImageLayer.test.js
View File

@@ -1,6 +1,8 @@
import CanvasImageLayerRenderer from '../../../../../../src/ol/renderer/canvas/ImageLayer.js';
import Feature from '../../../../../../src/ol/Feature.js';
import ImageLayer from '../../../../../../src/ol/layer/Image.js';
import ImageState from '../../../../../../src/ol/ImageState.js';
import ImageWrapper from '../../../../../../src/ol/Image.js';
import Map from '../../../../../../src/ol/Map.js';
import Point from '../../../../../../src/ol/geom/Point.js';
import Projection from '../../../../../../src/ol/proj/Projection.js';
@@ -446,5 +448,18 @@ describe('ol/renderer/canvas/ImageLayer', function () {
}
});
});
it('resets image when empty', function (done) {
const frameState = createLayerFrameState([0, 0, 100, 100]);
layer.getSource().on('imageloadend', function () {
if (renderer.prepareFrame(frameState)) {
renderer.renderFrame(frameState, null);
}
expect(renderer.image_).to.be.a(ImageWrapper);
renderer.image_.state = ImageState.EMPTY;
expect(renderer.prepareFrame(frameState)).to.be(false);
expect(renderer.image_).to.be(null);
done();
});
});
});
});