Sakurai/pdf.js
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fix small fonts

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sbarman 2011-07-21 09:20:19 -07:00
parent 88b04b7687
commit 645c9acb62
1 changed files with 8 additions and 1 deletions
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pdf.js
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@ -3879,6 +3879,9 @@ function ScratchCanvas(width, height) {
} }
var CanvasGraphics = (function() { var CanvasGraphics = (function() {
var kScalePrecision = 50;
var kRasterizerMin = 14;
function constructor(canvasCtx, imageCanvas) { function constructor(canvasCtx, imageCanvas) {
this.ctx = canvasCtx; this.ctx = canvasCtx;
this.current = new CanvasExtraState(); this.current = new CanvasExtraState();
@ -4094,8 +4097,10 @@ var CanvasGraphics = (function() {
if (this.ctx.$setFont) { if (this.ctx.$setFont) {
this.ctx.$setFont(fontName, size); this.ctx.$setFont(fontName, size);
} else { } else {
this.ctx.font = size + 'px "' + fontName + '"';
FontMeasure.setActive(fontObj, size); FontMeasure.setActive(fontObj, size);
size = (size <= kRasterizerMin) ? size * kScalePrecision : size;
this.ctx.font = size + 'px"' + fontName + '"';
} }
}, },
setTextRenderingMode: function(mode) { setTextRenderingMode: function(mode) {
@ -4143,6 +4148,8 @@ var CanvasGraphics = (function() {
ctx.translate(current.x, -1 * current.y); ctx.translate(current.x, -1 * current.y);
var font = this.current.font; var font = this.current.font;
if (font) { if (font) {
if (this.current.fontSize < kRasterizerMin)
ctx.transform(1 / kScalePrecision, 0, 0, 1 / kScalePrecision, 0, 0);
ctx.transform.apply(ctx, font.textMatrix); ctx.transform.apply(ctx, font.textMatrix);
text = font.charsToUnicode(text); text = font.charsToUnicode(text);
} }