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Avoiding double draw() calls

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This commit is contained in:
Yury Delendik 2014-01-07 10:59:54 -06:00
parent c1c15ac635
commit 378c49c2d8
1 changed files with 5 additions and 0 deletions
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5
web/page_view.js
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@ -414,12 +414,17 @@ var PageView = function pageView(container, id, scale,
this.draw = function pageviewDraw(callback) { this.draw = function pageviewDraw(callback) {
var pdfPage = this.pdfPage; var pdfPage = this.pdfPage;
if (this.pagePdfPromise) {
return;
}
if (!pdfPage) { if (!pdfPage) {
var promise = PDFView.getPage(this.id); var promise = PDFView.getPage(this.id);
promise.then(function(pdfPage) { promise.then(function(pdfPage) {
delete this.pagePdfPromise;
this.setPdfPage(pdfPage); this.setPdfPage(pdfPage);
this.draw(callback); this.draw(callback);
}.bind(this)); }.bind(this));
this.pagePdfPromise = promise;
return; return;
} }