Sakurai/pdf.js
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Avoid repeated creation of a simple RegExp object.

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This commit is contained in:
Nicholas Nethercote 2014-08-07 22:06:12 -07:00
parent c6c4583956
commit be29fc44e0
1 changed files with 7 additions and 1 deletions
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8
web/text_layer_builder.js
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@ -22,6 +22,12 @@ var FIND_SCROLL_OFFSET_LEFT = -400;
var MAX_TEXT_DIVS_TO_RENDER = 100000; var MAX_TEXT_DIVS_TO_RENDER = 100000;
var RENDER_DELAY = 200; // ms var RENDER_DELAY = 200; // ms
var NonWhitespaceRegexp = /\S/;
function isAllWhitespace(str) {
return !NonWhitespaceRegexp.test(str);
}
/** /**
* TextLayerBuilder provides text-selection functionality for the PDF. * TextLayerBuilder provides text-selection functionality for the PDF.
* It does this by creating overlay divs over the PDF text. These divs * It does this by creating overlay divs over the PDF text. These divs
@ -118,7 +124,7 @@ var TextLayerBuilder = (function TextLayerBuilderClosure() {
var style = styles[geom.fontName]; var style = styles[geom.fontName];
var textDiv = document.createElement('div'); var textDiv = document.createElement('div');
this.textDivs.push(textDiv); this.textDivs.push(textDiv);
if (!/\S/.test(geom.str)) { if (isAllWhitespace(geom.str)) {
textDiv.dataset.isWhitespace = true; textDiv.dataset.isWhitespace = true;
return; return;
} }