Sakurai/pdf.js
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Make showText and showSpacedText slightly faster.

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This commit is contained in:
Kalervo Kujala 2011-09-22 23:01:16 +03:00
parent 37a980ca28
commit 5c772329d8
1 changed files with 14 additions and 12 deletions
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26
pdf.js
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@ -5033,7 +5033,8 @@ var CanvasGraphics = (function canvasGraphics() {
ctx.scale(1 / textHScale, 1); ctx.scale(1 / textHScale, 1);
var width = 0; var width = 0;
for (var i = 0; i < glyphs.length; i++) { var glyphsLength = glyphs.length;
for (var i = 0; i < glyphsLength; ++i) {
var glyph = glyphs[i]; var glyph = glyphs[i];
if (glyph === null) { if (glyph === null) {
// word break // word break
@ -5042,34 +5043,35 @@ var CanvasGraphics = (function canvasGraphics() {
} }
var unicode = glyph.unicode; var unicode = glyph.unicode;
var char = unicode >= 0x10000 ? var char = (unicode >= 0x10000) ?
String.fromCharCode(0xD800 | ((unicode - 0x10000) >> 10), String.fromCharCode(0xD800 | ((unicode - 0x10000) >> 10),
0xDC00 | (unicode & 0x3FF)) : String.fromCharCode(unicode); 0xDC00 | (unicode & 0x3FF)) : String.fromCharCode(unicode);
var charWidth = glyph.width * fontSize * 0.001;
charWidth += charSpacing;
ctx.fillText(char, width, 0); ctx.fillText(char, width, 0);
width += charWidth; width += glyph.width * fontSize * 0.001 + charSpacing;
} }
current.x += width; current.x += width;
this.ctx.restore(); this.ctx.restore();
}, },
showSpacedText: function canvasGraphicsShowSpacedText(arr) { showSpacedText: function canvasGraphicsShowSpacedText(arr) {
for (var i = 0; i < arr.length; ++i) { var ctx = this.ctx;
var current = this.current;
var fontSize = current.fontSize;
var textHScale = current.textHScale;
var arrLength = arr.length;
for (var i = 0; i < arrLength; ++i) {
var e = arr[i]; var e = arr[i];
if (IsNum(e)) { if (IsNum(e)) {
if (this.ctx.$addCurrentX) { if (ctx.$addCurrentX) {
this.ctx.$addCurrentX(-e * 0.001 * this.current.fontSize); ctx.$addCurrentX(-e * 0.001 * fontSize);
} else { } else {
this.current.x -= e * 0.001 * this.current.fontSize * current.x -= e * 0.001 * fontSize * textHScale;
this.current.textHScale;
} }
} else if (IsString(e)) { } else if (IsString(e)) {
this.showText(e); this.showText(e);
} else { } else {
malformed('TJ array element ' + e + " isn't string or num"); malformed('TJ array element ' + e + ' is not string or num');
} }
} }
}, },