ZenBrowserMirrors/pdf.js
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Incrementally render by sending the operator list by chunks as they're ready.

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This commit is contained in:
Brendan Dahl 2013-07-31 11:17:36 -07:00
parent f7d2a09bf8
commit bf72bc94e2
11 changed files with 641 additions and 789 deletions
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22
web/viewer.js
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@ -1553,8 +1553,12 @@ var PageView = function pageView(container, id, scale,
};
this.update = function pageViewUpdate(scale, rotation) {
this.renderingState = RenderingStates.INITIAL;
if (this.renderTask) {
this.renderTask.cancel();
this.renderTask = null;
}
this.resume = null;
this.renderingState = RenderingStates.INITIAL;
if (typeof rotation !== 'undefined') {
this.rotation = rotation;
@ -1818,13 +1822,9 @@ var PageView = function pageView(container, id, scale,
// Rendering area
var self = this;
var renderingWasReset = false;
function pageViewDrawCallback(error) {
if (renderingWasReset) {
return;
}
self.renderingState = RenderingStates.FINISHED;
self.renderTask = null;
if (self.loadingIconDiv) {
div.removeChild(self.loadingIconDiv);
@ -1874,12 +1874,6 @@ var PageView = function pageView(container, id, scale,
viewport: this.viewport,
textLayer: textLayer,
continueCallback: function pdfViewcContinueCallback(cont) {
if (self.renderingState === RenderingStates.INITIAL) {
// The page update() was called, we just need to abort any rendering.
renderingWasReset = true;
return;
}
if (PDFView.highestPriorityPage !== 'page' + self.id) {
self.renderingState = RenderingStates.PAUSED;
self.resume = function resumeCallback() {
@ -1891,7 +1885,9 @@ var PageView = function pageView(container, id, scale,
cont();
}
};
this.pdfPage.render(renderContext).then(
this.renderTask = this.pdfPage.render(renderContext);
this.renderTask.then(
function pdfPageRenderCallback() {
pageViewDrawCallback(null);
},