yetangitu/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
src/worker.js
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@ -398,31 +398,11 @@ var WorkerMessageHandler = {
var pageNum = data.pageIndex + 1;
var start = Date.now();
// Pre compile the pdf page and fetch the fonts/images.
page.getOperatorList(handler).then(function(opListData) {
var operatorList = opListData.queue;
var dependency = Object.keys(opListData.dependencies);
// The following code does quite the same as
// Page.prototype.startRendering, but stops at one point and sends the
// result back to the main thread.
page.getOperatorList(handler).then(function(operatorList) {
log('page=%d - getOperatorList: time=%dms, len=%d', pageNum,
Date.now() - start, operatorList.fnArray.length);
// Filter the dependecies for fonts.
var fonts = {};
for (var i = 0, ii = dependency.length; i < ii; i++) {
var dep = dependency[i];
if (dep.indexOf('g_font_') === 0) {
fonts[dep] = true;
}
}
handler.send('RenderPage', {
pageIndex: data.pageIndex,
operatorList: operatorList,
depFonts: Object.keys(fonts)
});
}, function(e) {
var minimumStackMessage =