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Only draw glyphs on canvas if they are in the font or the font file is missing.

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This commit is contained in:
Brendan Dahl 2016-02-24 10:48:02 -08:00
parent c53581f4e5
commit ff87f3fb86
5 changed files with 34 additions and 14 deletions
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22
src/display/canvas.js
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@ -1501,15 +1501,19 @@ var CanvasGraphics = (function CanvasGraphicsClosure() {
}
}
if (simpleFillText && !accent) {
// common case
ctx.fillText(character, scaledX, scaledY);
} else {
this.paintChar(character, scaledX, scaledY);
if (accent) {
scaledAccentX = scaledX + accent.offset.x / fontSizeScale;
scaledAccentY = scaledY - accent.offset.y / fontSizeScale;
this.paintChar(accent.fontChar, scaledAccentX, scaledAccentY);
// Only attempt to draw the glyph if it is actually in the embedded font
// file or if there isn't a font file so the fallback font is shown.
if (glyph.isInFont || font.missingFile) {
if (simpleFillText && !accent) {
// common case
ctx.fillText(character, scaledX, scaledY);
} else {
this.paintChar(character, scaledX, scaledY);
if (accent) {
scaledAccentX = scaledX + accent.offset.x / fontSizeScale;
scaledAccentY = scaledY - accent.offset.y / fontSizeScale;
this.paintChar(accent.fontChar, scaledAccentX, scaledAccentY);
}
}
}