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Merge pull request #279 from sbarman/spacing

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char spacing, word spacing and horozontal scaling
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sbarman 2011-07-22 18:03:53 -07:00
commit 4efe54fb7b
1 changed files with 38 additions and 16 deletions
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pdf.js
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@ -3448,7 +3448,7 @@ var EvalState = (function() {
// Character and word spacing // Character and word spacing
this.charSpace = 0; this.charSpace = 0;
this.wordSpace = 0; this.wordSpace = 0;
this.textHScale = 100; this.textHScale = 1;
// Color spaces // Color spaces
this.fillColorSpace = null; this.fillColorSpace = null;
this.strokeColorSpace = null; this.strokeColorSpace = null;
@ -3866,7 +3866,7 @@ var CanvasExtraState = (function() {
// Character and word spacing // Character and word spacing
this.charSpace = 0; this.charSpace = 0;
this.wordSpace = 0; this.wordSpace = 0;
this.textHScale = 100; this.textHScale = 1;
// Color spaces // Color spaces
this.fillColorSpaceObj = null; this.fillColorSpaceObj = null;
this.strokeColorSpaceObj = null; this.strokeColorSpaceObj = null;
@ -4114,13 +4114,13 @@ var CanvasGraphics = (function() {
endText: function() { endText: function() {
}, },
setCharSpacing: function(spacing) { setCharSpacing: function(spacing) {
this.ctx.charSpacing = spacing; this.current.charSpacing = spacing;
}, },
setWordSpacing: function(spacing) { setWordSpacing: function(spacing) {
this.ctx.wordSpacing = spacing; this.current.wordSpacing = spacing;
}, },
setHScale: function(scale) { setHScale: function(scale) {
this.ctx.textHScale = (scale % 100) * 0.01; this.current.textHScale = scale / 100;
}, },
setLeading: function(leading) { setLeading: function(leading) {
this.current.leading = leading; this.current.leading = leading;
@ -4196,17 +4196,39 @@ var CanvasGraphics = (function() {
ctx.transform.apply(ctx, current.textMatrix); ctx.transform.apply(ctx, current.textMatrix);
ctx.scale(1, -1); ctx.scale(1, -1);
if (this.ctx.$showText) {
ctx.$showText(current.y, text);
} else {
ctx.translate(current.x, -1 * current.y); ctx.translate(current.x, -1 * current.y);
var scaleFactorX = 1, scaleFactorY = 1;
var font = this.current.font; var font = this.current.font;
if (font) { if (font) {
if (this.current.fontSize < kRasterizerMin) if (this.current.fontSize < kRasterizerMin) {
ctx.transform(1 / kScalePrecision, 0, 0, 1 / kScalePrecision, 0, 0); scaleFactorX = scaleFactorY = kScalePrecision;
ctx.scale(1 / scaleFactorX, 1 / scaleFactorY);
}
ctx.transform.apply(ctx, font.textMatrix); ctx.transform.apply(ctx, font.textMatrix);
text = font.charsToUnicode(text); text = font.charsToUnicode(text);
} }
var charSpacing = current.charSpacing;
var wordSpacing = current.wordSpacing;
var textHScale = current.textHScale;
if (charSpacing != 0 || wordSpacing != 0 || textHScale != 1) {
scaleFactorX *= textHScale;
ctx.scale(1 / textHScale, 1);
var width = 0;
for (var i = 0, ii = text.length; i < ii; ++i) {
var c = text.charAt(i);
ctx.fillText(c, 0, 0);
var charWidth = FontMeasure.measureText(c) + charSpacing;
if (c.charCodeAt(0) == 32)
charWidth += wordSpacing;
ctx.translate(charWidth * scaleFactorX, 0);
width += charWidth;
}
current.x += width;
} else {
ctx.fillText(text, 0, 0); ctx.fillText(text, 0, 0);
current.x += FontMeasure.measureText(text); current.x += FontMeasure.measureText(text);
} }
@ -4220,7 +4242,7 @@ var CanvasGraphics = (function() {
if (this.ctx.$addCurrentX) { if (this.ctx.$addCurrentX) {
this.ctx.$addCurrentX(-e * 0.001 * this.current.fontSize); this.ctx.$addCurrentX(-e * 0.001 * this.current.fontSize);
} else { } else {
this.current.x -= e * 0.001 * this.current.fontSize; this.current.x -= e * 0.001 * this.current.fontSize * this.current.textHScale;
} }
} else if (IsString(e)) { } else if (IsString(e)) {
this.showText(e); this.showText(e);