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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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44
src/core.js
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@ -18,7 +18,8 @@
isArrayBuffer, isDict, isName, isStream, isString, Lexer,
Linearization, NullStream, PartialEvaluator, shadow, Stream,
StreamsSequenceStream, stringToPDFString, TODO, Util, warn, XRef,
MissingDataException, Promise, Annotation, ObjectLoader */
MissingDataException, Promise, Annotation, ObjectLoader, OperatorList
*/
'use strict';
@ -183,33 +184,35 @@ var Page = (function PageClosure() {
dataPromises.then(function(data) {
var contentStream = data[0];
partialEvaluator.getOperatorList(contentStream, self.resources).then(
function(data) {
pageListPromise.resolve(data);
},
reject
);
var opList = new OperatorList(handler, self.pageIndex);
handler.send('StartRenderPage', {
transparency: partialEvaluator.hasBlendModes(self.resources),
pageIndex: self.pageIndex
});
partialEvaluator.getOperatorList(contentStream, self.resources, opList);
pageListPromise.resolve(opList);
});
var annotationsPromise = pdfManager.ensure(this, 'annotations');
Promise.all([pageListPromise, annotationsPromise]).then(function(datas) {
var pageData = datas[0];
var pageQueue = pageData.queue;
var pageOpList = datas[0];
var annotations = datas[1];
if (annotations.length === 0) {
PartialEvaluator.optimizeQueue(pageQueue);
promise.resolve(pageData);
PartialEvaluator.optimizeQueue(pageOpList);
pageOpList.flush(true);
promise.resolve(pageOpList);
return;
}
var dependencies = pageData.dependencies;
var annotationsReadyPromise = Annotation.appendToOperatorList(
annotations, pageQueue, pdfManager, dependencies, partialEvaluator);
annotations, pageOpList, pdfManager, partialEvaluator);
annotationsReadyPromise.then(function () {
PartialEvaluator.optimizeQueue(pageQueue);
promise.resolve(pageData);
PartialEvaluator.optimizeQueue(pageOpList);
pageOpList.flush(true);
promise.resolve(pageOpList);
}, reject);
}, reject);
@ -244,12 +247,9 @@ var Page = (function PageClosure() {
self.pageIndex, 'p' + self.pageIndex + '_',
self.idCounters);
partialEvaluator.getTextContent(
contentStream, self.resources).then(function(bidiTexts) {
textContentPromise.resolve({
bidiTexts: bidiTexts
});
});
var bidiTexts = partialEvaluator.getTextContent(contentStream,
self.resources);
textContentPromise.resolve(bidiTexts);
});
return textContentPromise;