yetangitu/pdf.js
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Merge pull request #3209 from yurydelendik/remeasure

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Forces to measure "standard" fonts
This commit is contained in:
Brendan Dahl 2013-05-09 14:00:09 -07:00
commit 9d8985f41e
2 changed files with 25 additions and 0 deletions
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21
src/canvas.js
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@ -1049,6 +1049,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
continue;
}
var restoreNeeded = false;
var character = glyph.fontChar;
var vmetric = glyph.vmetric || defaultVMetrics;
if (vertical) {
@ -1074,6 +1075,22 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
scaledAccentX = scaledX + accent.offset.x / fontSizeScale;
scaledAccentY = scaledY - accent.offset.y / fontSizeScale;
}
if (font.remeasure && width > 0) {
// some standard fonts may not have the exact width, trying to
// rescale per character
var measuredWidth = ctx.measureText(character).width * 1000 /
current.fontSize * current.fontSizeScale;
var characterScaleX = width / measuredWidth;
restoreNeeded = true;
ctx.save();
ctx.scale(characterScaleX, 1);
scaledX /= characterScaleX;
if (accent) {
scaledAccentX /= characterScaleX;
}
}
switch (textRenderingMode) {
default: // other unsupported rendering modes
case TextRenderingMode.FILL:
@ -1115,6 +1132,10 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
x += charWidth;
canvasWidth += charWidth;
if (restoreNeeded) {
ctx.restore();
}
}
if (vertical) {
current.y -= x * textHScale;