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Forces to measure "standard" fonts

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This commit is contained in:
Yury Delendik 2013-05-06 09:34:47 -05:00
parent a081c2d0f1
commit 9278abe738
2 changed files with 25 additions and 0 deletions
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21
src/canvas.js
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@ -1030,6 +1030,7 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
continue;
}
var restoreNeeded = false;
var character = glyph.fontChar;
var vmetric = glyph.vmetric || defaultVMetrics;
if (vertical) {
@ -1055,6 +1056,22 @@ 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:
@ -1096,6 +1113,10 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
x += charWidth;
canvasWidth += charWidth;
if (restoreNeeded) {
ctx.restore();
}
}
if (vertical) {
current.y -= x * textHScale;