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Merge pull request #4968 from nnethercote/glyphBuf

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Build up textChunk.str more efficiently.
This commit is contained in:
Yury Delendik 2014-06-18 17:51:07 -05:00
commit cf4bc42e33
1 changed files with 8 additions and 5 deletions
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13
src/core/evaluator.js
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@ -908,7 +908,9 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
}; };
} }
return { return {
str: '', // |str| is initially an array which we push individual chars to, and
// then runBidi() overwrites it with the final string.
str: [],
dir: null, dir: null,
width: 0, width: 0,
height: 0, height: 0,
@ -918,7 +920,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
} }
function runBidi(textChunk) { function runBidi(textChunk) {
var bidiResult = PDFJS.bidi(textChunk.str, -1, textState.font.vertical); var str = textChunk.str.join('');
var bidiResult = PDFJS.bidi(str, -1, textState.font.vertical);
textChunk.str = bidiResult.str; textChunk.str = bidiResult.str;
textChunk.dir = bidiResult.dir; textChunk.dir = bidiResult.dir;
return textChunk; return textChunk;
@ -1008,7 +1011,7 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
} }
textState.translateTextMatrix(tx, ty); textState.translateTextMatrix(tx, ty);
textChunk.str += glyphUnicode; textChunk.str.push(glyphUnicode);
} }
var a = textState.textLineMatrix[0]; var a = textState.textLineMatrix[0];
@ -1103,10 +1106,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
if (fakeSpaces > MULTI_SPACE_FACTOR) { if (fakeSpaces > MULTI_SPACE_FACTOR) {
fakeSpaces = Math.round(fakeSpaces); fakeSpaces = Math.round(fakeSpaces);
while (fakeSpaces--) { while (fakeSpaces--) {
textChunk.str += ' '; textChunk.str.push(' ');
} }
} else if (fakeSpaces > SPACE_FACTOR) { } else if (fakeSpaces > SPACE_FACTOR) {
textChunk.str += ' '; textChunk.str.push(' ');
} }
} }
} }