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Ensure that any pending rendering operations in PDFViewer/PDFThumbnailViewer are cancelled when the viewer is closed

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This commit is contained in:
Jonas Jenwald 2016-07-29 20:39:22 +02:00
parent fb5aa58008
commit a824c6c4f6
5 changed files with 66 additions and 27 deletions
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18
web/pdf_thumbnail_view.js
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@ -98,8 +98,9 @@ var PDFThumbnailView = (function PDFThumbnailViewClosure() {
this.linkService = linkService;
this.renderingQueue = renderingQueue;
this.resume = null;
this.renderTask = null;
this.renderingState = RenderingStates.INITIAL;
this.resume = null;
this.disableCanvasToImageConversion = disableCanvasToImageConversion;
this.pageWidth = this.viewport.width;
@ -151,11 +152,7 @@ var PDFThumbnailView = (function PDFThumbnailViewClosure() {
},
reset: function PDFThumbnailView_reset() {
if (this.renderTask) {
this.renderTask.cancel();
}
this.resume = null;
this.renderingState = RenderingStates.INITIAL;
this.cancelRendering();
this.pageWidth = this.viewport.width;
this.pageHeight = this.viewport.height;
@ -199,6 +196,15 @@ var PDFThumbnailView = (function PDFThumbnailViewClosure() {
this.reset();
},
cancelRendering: function PDFThumbnailView_cancelRendering() {
if (this.renderTask) {
this.renderTask.cancel();
this.renderTask = null;
}
this.renderingState = RenderingStates.INITIAL;
this.resume = null;
},
/**
* @private
*/