Sakurai/pdf.js
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Merge pull request #4962 from yurydelendik/issue-4943

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Increases page cache size when needed
This commit is contained in:
Jonas Jenwald 2014-06-17 21:02:46 +02:00
commit b160e858b3
2 changed files with 12 additions and 2 deletions
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6
web/ui_utils.js
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@ -255,5 +255,11 @@ var Cache = function cacheCache(size) {
data.shift().destroy(); data.shift().destroy();
} }
}; };
this.resize = function (newSize) {
size = newSize;
while (data.length > size) {
data.shift().destroy();
}
};
}; };

8
web/viewer.js
View File

@ -28,7 +28,7 @@ var DEFAULT_URL = 'compressed.tracemonkey-pldi-09.pdf';
var DEFAULT_SCALE = 'auto'; var DEFAULT_SCALE = 'auto';
var DEFAULT_SCALE_DELTA = 1.1; var DEFAULT_SCALE_DELTA = 1.1;
var UNKNOWN_SCALE = 0; var UNKNOWN_SCALE = 0;
var CACHE_SIZE = 10; var DEFAULT_CACHE_SIZE = 10;
var CSS_UNITS = 96.0 / 72.0; var CSS_UNITS = 96.0 / 72.0;
var SCROLLBAR_PADDING = 40; var SCROLLBAR_PADDING = 40;
var VERTICAL_PADDING = 5; var VERTICAL_PADDING = 5;
@ -91,7 +91,7 @@ var mozL10n = document.mozL10n || document.webL10n;
//#include chromecom.js //#include chromecom.js
//#endif //#endif
var cache = new Cache(CACHE_SIZE); var cache = new Cache(DEFAULT_CACHE_SIZE);
var currentPageNumber = 1; var currentPageNumber = 1;
//#include view_history.js //#include view_history.js
@ -1964,6 +1964,10 @@ function updateViewarea() {
return; return;
} }
var suggestedCacheSize = Math.max(DEFAULT_CACHE_SIZE,
2 * visiblePages.length + 1);
cache.resize(suggestedCacheSize);
PDFView.renderHighestPriority(visible); PDFView.renderHighestPriority(visible);
var currentId = PDFView.page; var currentId = PDFView.page;