String LoggingCanvas::stringForSkPaintFlags(const SkPaint& paint)
{
if (!paint.getFlags())
return "none";
String flagsString = "";
appendFlagToString(&flagsString, paint.isAntiAlias(), "AntiAlias");
appendFlagToString(&flagsString, paint.isDither(), "Dither");
appendFlagToString(&flagsString, paint.isUnderlineText(), "UnderlinText");
appendFlagToString(&flagsString, paint.isStrikeThruText(), "StrikeThruText");
appendFlagToString(&flagsString, paint.isFakeBoldText(), "FakeBoldText");
appendFlagToString(&flagsString, paint.isLinearText(), "LinearText");
appendFlagToString(&flagsString, paint.isSubpixelText(), "SubpixelText");
appendFlagToString(&flagsString, paint.isDevKernText(), "DevKernText");
appendFlagToString(&flagsString, paint.isLCDRenderText(), "LCDRenderText");
appendFlagToString(&flagsString, paint.isEmbeddedBitmapText(), "EmbeddedBitmapText");
appendFlagToString(&flagsString, paint.isAutohinted(), "Autohinted");
appendFlagToString(&flagsString, paint.isVerticalText(), "VerticalText");
appendFlagToString(&flagsString, paint.getFlags() & SkPaint::kGenA8FromLCD_Flag, "GenA8FromLCD");
return flagsString;
}
void SkPDFDevice::drawText(const SkDraw& d, const void* text, size_t len,
SkScalar x, SkScalar y, const SkPaint& paint) {
SkPaint textPaint = calculateTextPaint(paint);
updateGSFromPaint(textPaint, true);
// We want the text in glyph id encoding and a writable buffer, so we end
// up making a copy either way.
size_t numGlyphs = paint.textToGlyphs(text, len, NULL);
uint16_t* glyphIDs =
(uint16_t*)sk_malloc_flags(numGlyphs * 2,
SK_MALLOC_TEMP | SK_MALLOC_THROW);
SkAutoFree autoFreeGlyphIDs(glyphIDs);
if (paint.getTextEncoding() != SkPaint::kGlyphID_TextEncoding) {
paint.textToGlyphs(text, len, glyphIDs);
textPaint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
} else {
SkASSERT((len & 1) == 0);
SkASSERT(len / 2 == numGlyphs);
memcpy(glyphIDs, text, len);
}
SkScalar width;
SkScalar* widthPtr = NULL;
if (textPaint.isUnderlineText() || textPaint.isStrikeThruText())
widthPtr = &width;
SkDrawCacheProc glyphCacheProc = textPaint.getDrawCacheProc();
alignText(glyphCacheProc, textPaint, glyphIDs, numGlyphs, &x, &y, widthPtr);
fContent.writeText("BT\n");
setTextTransform(x, y, textPaint.getTextSkewX());
size_t consumedGlyphCount = 0;
while (numGlyphs > consumedGlyphCount) {
updateFont(textPaint, glyphIDs[consumedGlyphCount]);
SkPDFFont* font = fGraphicStack[fGraphicStackIndex].fFont;
size_t availableGlyphs =
font->glyphsToPDFFontEncoding(glyphIDs + consumedGlyphCount,
numGlyphs - consumedGlyphCount);
SkString encodedString =
SkPDFString::formatString(glyphIDs + consumedGlyphCount,
availableGlyphs, font->multiByteGlyphs());
fContent.writeText(encodedString.c_str());
consumedGlyphCount += availableGlyphs;
fContent.writeText(" Tj\n");
}
fContent.writeText("ET\n");
// Draw underline and/or strikethrough if the paint has them.
// drawPosText() and drawTextOnPath() don't draw underline or strikethrough
// because the raster versions don't. Use paint instead of textPaint
// because we may have changed strokeWidth to do fakeBold text.
if (paint.isUnderlineText() || paint.isStrikeThruText()) {
SkScalar textSize = paint.getTextSize();
SkScalar height = SkScalarMul(textSize, kStdUnderline_Thickness);
if (paint.isUnderlineText()) {
SkScalar top = SkScalarMulAdd(textSize, kStdUnderline_Offset, y);
SkRect r = SkRect::MakeXYWH(x, top - height, width, height);
drawRect(d, r, paint);
}
if (paint.isStrikeThruText()) {
SkScalar top = SkScalarMulAdd(textSize, kStdStrikeThru_Offset, y);
SkRect r = SkRect::MakeXYWH(x, top - height, width, height);
drawRect(d, r, paint);
}
}
}