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Handle bidi ordering of PDF strings

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This commit is contained in:
Adil Allawi 2012-02-10 16:06:59 +00:00
parent d50773fb96
commit 2e1a88f39e
4 changed files with 393 additions and 3 deletions
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17
src/canvas.js
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@ -749,8 +749,16 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
x += charWidth;
text.str += glyph.unicode === ' ' ? '\u00A0' : glyph.unicode;
text.length++;
var glyphUnicode = glyph.unicode === ' ' ? '\u00A0' : glyph.unicode;
var glyphUniLen = glyphUnicode.length;
//reverse an arabic ligature
if (glyphUniLen > 1 && isRTLRangeFor(glyphUnicode.charCodeAt(0)))
{
for (var ii = glyphUniLen - 1; ii >= 0; ii--)
text.str += glyphUnicode[ii];
} else
text.str += glyphUnicode;
text.length += glyphUniLen;
text.canvasWidth += charWidth;
}
current.x += x * textHScale2;
@ -823,8 +831,11 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
}
}
if (textSelection)
if (textSelection) {
if (isRTLRangeFor(text.str.charCodeAt(0))) //first char is rtl
text.str = bidi(null, text.str, 1);
this.textLayer.appendText(text, font.loadedName, fontSize);
}
},
nextLineShowText: function canvasGraphicsNextLineShowText(text) {
this.nextLine();