void Font::drawGlyphs(GraphicsContext* graphicsContext,
const SimpleFontData* font,
const GlyphBuffer& glyphBuffer,
int from,
int numGlyphs,
const FloatPoint& point) const
{
SkColor color = graphicsContext->platformContext()->effectiveFillColor();
unsigned char alpha = SkColorGetA(color);
// Skip 100% transparent text; no need to draw anything.
if (!alpha && graphicsContext->platformContext()->getStrokeStyle() == NoStroke && !graphicsContext->hasShadow())
return;
if (!alpha || windowsCanHandleDrawTextShadow(graphicsContext) || !windowsCanHandleTextDrawingWithoutShadow(graphicsContext)) {
drawGlyphsWin(graphicsContext, font, glyphBuffer, from, numGlyphs, point);
return;
}
// Draw in two passes: skia for the shadow, GDI for foreground text
// pass1: shadow (will use skia)
graphicsContext->save();
graphicsContext->setFillColor(Color::transparent, graphicsContext->fillColorSpace());
drawGlyphsWin(graphicsContext, font, glyphBuffer, from, numGlyphs, point);
graphicsContext->restore();
// pass2: foreground text (will use GDI)
FloatSize shadowOffset;
float shadowBlur;
Color shadowColor;
ColorSpace shadowColorSpace;
graphicsContext->getShadow(shadowOffset, shadowBlur, shadowColor, shadowColorSpace);
graphicsContext->setShadow(shadowOffset, shadowBlur, Color::transparent, shadowColorSpace);
drawGlyphsWin(graphicsContext, font, glyphBuffer, from, numGlyphs, point);
graphicsContext->setShadow(shadowOffset, shadowBlur, shadowColor, shadowColorSpace);
}
bool windowsCanHandleTextDrawing(GraphicsContext* context)
{
if (!windowsCanHandleTextDrawingWithoutShadow(context))
return false;
// Check for shadow effects.
if (!windowsCanHandleDrawTextShadow(context))
return false;
return true;
}
