void Font::drawGlyphs(GraphicsContext* graphicsContext, const FontData* font, const GlyphBuffer& glyphBuffer,
int from, int numGlyphs, const FloatPoint& point) const
{
CGContextRef cgContext = graphicsContext->platformContext();
uint32_t oldFontSmoothingStyle = wkSetFontSmoothingStyle(cgContext);
const FontPlatformData& platformData = font->platformData();
//NSFont* drawFont;
//if ([gContext isDrawingToScreen]) {
// drawFont = [platformData.font screenFont];
// if (drawFont != platformData.font)
// // We are getting this in too many places (3406411); use ERROR so it only prints on debug versions for now. (We should debug this also, eventually).
// LOG_ERROR("Attempting to set non-screen font (%@) when drawing to screen. Using screen font anyway, may result in incorrect metrics.",
// [[[platformData.font fontDescriptor] fontAttributes] objectForKey:NSFontNameAttribute]);
//} else {
// drawFont = [platformData.font printerFont];
// if (drawFont != platformData.font)
// NSLog(@"Attempting to set non-printer font (%@) when printing. Using printer font anyway, may result in incorrect metrics.",
// [[[platformData.font fontDescriptor] fontAttributes] objectForKey:NSFontNameAttribute]);
//}
CGContextSetFont(cgContext, platformData.cgFont());
CGAffineTransform matrix = CGAffineTransformIdentity;
matrix.b = -matrix.b;
matrix.d = -matrix.d;
if (platformData.syntheticOblique())
{
static float skew = -tanf(syntheticObliqueAngle * acosf(0) / 90);
matrix = CGAffineTransformConcat(matrix, CGAffineTransformMake(1, 0, skew, 1, 0, 0));
}
// Uniscribe gives us offsets to help refine the positioning of combining glyphs.
FloatSize translation = glyphBuffer.offsetAt(from);
if (translation.width() || translation.height())
CGAffineTransformTranslate(matrix, translation.width(), translation.height());
CGContextSetTextMatrix(cgContext, matrix);
//wkSetCGFontRenderingMode(cgContext, drawFont);
CGContextSetFontSize(cgContext, platformData.size());
CGContextSetTextPosition(cgContext, point.x(), point.y());
CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
if (font->m_syntheticBoldOffset) {
CGContextSetTextPosition(cgContext, point.x() + font->m_syntheticBoldOffset, point.y());
CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
}
wkRestoreFontSmoothingStyle(cgContext, oldFontSmoothingStyle);
}
void Font::drawGlyphs(GraphicsContext* graphicsContext, const SimpleFontData* font, const GlyphBuffer& glyphBuffer,
int from, int numGlyphs, const FloatPoint& point) const
{
CGContextRef cgContext = graphicsContext->platformContext();
bool shouldUseFontSmoothing = WebCoreShouldUseFontSmoothing();
switch(fontDescription().fontSmoothing()) {
case Antialiased: {
graphicsContext->setShouldAntialias(true);
shouldUseFontSmoothing = false;
break;
}
case SubpixelAntialiased: {
graphicsContext->setShouldAntialias(true);
shouldUseFontSmoothing = true;
break;
}
case NoSmoothing: {
graphicsContext->setShouldAntialias(false);
shouldUseFontSmoothing = false;
break;
}
case AutoSmoothing: {
// For the AutoSmooth case, don't do anything! Keep the default settings.
break;
}
default:
ASSERT_NOT_REACHED();
}
if (font->platformData().useGDI() && !shouldUseFontSmoothing) {
drawGDIGlyphs(graphicsContext, font, glyphBuffer, from, numGlyphs, point);
return;
}
uint32_t oldFontSmoothingStyle = wkSetFontSmoothingStyle(cgContext, shouldUseFontSmoothing);
const FontPlatformData& platformData = font->platformData();
CGContextSetFont(cgContext, platformData.cgFont());
CGAffineTransform matrix = CGAffineTransformIdentity;
matrix.b = -matrix.b;
matrix.d = -matrix.d;
if (platformData.syntheticOblique()) {
static float skew = -tanf(syntheticObliqueAngle * piFloat / 180.0f);
matrix = CGAffineTransformConcat(matrix, CGAffineTransformMake(1, 0, skew, 1, 0, 0));
}
CGContextSetTextMatrix(cgContext, matrix);
// Uniscribe gives us offsets to help refine the positioning of combining glyphs.
FloatSize translation = glyphBuffer.offsetAt(from);
CGContextSetFontSize(cgContext, platformData.size());
wkSetCGContextFontRenderingStyle(cgContext, font->isSystemFont(), false, font->platformData().useGDI());
FloatSize shadowOffset;
float shadowBlur;
Color shadowColor;
ColorSpace shadowColorSpace;
graphicsContext->getShadow(shadowOffset, shadowBlur, shadowColor, shadowColorSpace);
bool hasSimpleShadow = graphicsContext->textDrawingMode() == TextModeFill && shadowColor.isValid() && !shadowBlur && (!graphicsContext->shadowsIgnoreTransforms() || graphicsContext->getCTM().isIdentityOrTranslationOrFlipped());
if (hasSimpleShadow) {
// Paint simple shadows ourselves instead of relying on CG shadows, to avoid losing subpixel antialiasing.
graphicsContext->clearShadow();
Color fillColor = graphicsContext->fillColor();
Color shadowFillColor(shadowColor.red(), shadowColor.green(), shadowColor.blue(), shadowColor.alpha() * fillColor.alpha() / 255);
graphicsContext->setFillColor(shadowFillColor, ColorSpaceDeviceRGB);
float shadowTextX = point.x() + translation.width() + shadowOffset.width();
// If shadows are ignoring transforms, then we haven't applied the Y coordinate flip yet, so down is negative.
float shadowTextY = point.y() + translation.height() + shadowOffset.height() * (graphicsContext->shadowsIgnoreTransforms() ? -1 : 1);
CGContextSetTextPosition(cgContext, shadowTextX, shadowTextY);
CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
if (font->syntheticBoldOffset()) {
CGContextSetTextPosition(cgContext, point.x() + translation.width() + shadowOffset.width() + font->syntheticBoldOffset(), point.y() + translation.height() + shadowOffset.height());
CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
}
graphicsContext->setFillColor(fillColor, ColorSpaceDeviceRGB);
}
CGContextSetTextPosition(cgContext, point.x() + translation.width(), point.y() + translation.height());
CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
if (font->syntheticBoldOffset()) {
CGContextSetTextPosition(cgContext, point.x() + translation.width() + font->syntheticBoldOffset(), point.y() + translation.height());
CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
}
if (hasSimpleShadow)
graphicsContext->setShadow(shadowOffset, shadowBlur, shadowColor, ColorSpaceDeviceRGB);
wkRestoreFontSmoothingStyle(cgContext, oldFontSmoothingStyle);
}
void Font::drawGlyphs(GraphicsContext* graphicsContext, const SimpleFontData* font, const GlyphBuffer& glyphBuffer,
int from, int numGlyphs, const FloatPoint& point) const
{
CGContextRef cgContext = graphicsContext->platformContext();
bool shouldUseFontSmoothing = WebCoreShouldUseFontSmoothing();
if (font->platformData().useGDI()) {
static bool canUsePlatformNativeGlyphs = wkCanUsePlatformNativeGlyphs();
if (!canUsePlatformNativeGlyphs || !shouldUseFontSmoothing || (graphicsContext->textDrawingMode() & cTextStroke)) {
drawGDIGlyphs(graphicsContext, font, glyphBuffer, from, numGlyphs, point);
return;
}
}
uint32_t oldFontSmoothingStyle = wkSetFontSmoothingStyle(cgContext, shouldUseFontSmoothing);
const FontPlatformData& platformData = font->platformData();
CGContextSetFont(cgContext, platformData.cgFont());
CGAffineTransform matrix = CGAffineTransformIdentity;
matrix.b = -matrix.b;
matrix.d = -matrix.d;
if (platformData.syntheticOblique()) {
static float skew = -tanf(syntheticObliqueAngle * piFloat / 180.0f);
matrix = CGAffineTransformConcat(matrix, CGAffineTransformMake(1, 0, skew, 1, 0, 0));
}
CGContextSetTextMatrix(cgContext, matrix);
// Uniscribe gives us offsets to help refine the positioning of combining glyphs.
FloatSize translation = glyphBuffer.offsetAt(from);
CGContextSetFontSize(cgContext, platformData.size());
wkSetCGContextFontRenderingStyle(cgContext, font->isSystemFont(), false, font->platformData().useGDI());
IntSize shadowSize;
int shadowBlur;
Color shadowColor;
graphicsContext->getShadow(shadowSize, shadowBlur, shadowColor);
bool hasSimpleShadow = graphicsContext->textDrawingMode() == cTextFill && shadowColor.isValid() && !shadowBlur;
if (hasSimpleShadow) {
// Paint simple shadows ourselves instead of relying on CG shadows, to avoid losing subpixel antialiasing.
graphicsContext->clearShadow();
Color fillColor = graphicsContext->fillColor();
Color shadowFillColor(shadowColor.red(), shadowColor.green(), shadowColor.blue(), shadowColor.alpha() * fillColor.alpha() / 255);
graphicsContext->setFillColor(shadowFillColor);
CGContextSetTextPosition(cgContext, point.x() + translation.width() + shadowSize.width(), point.y() + translation.height() + shadowSize.height());
CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
if (font->m_syntheticBoldOffset) {
CGContextSetTextPosition(cgContext, point.x() + translation.width() + shadowSize.width() + font->m_syntheticBoldOffset, point.y() + translation.height() + shadowSize.height());
CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
}
graphicsContext->setFillColor(fillColor);
}
CGContextSetTextPosition(cgContext, point.x() + translation.width(), point.y() + translation.height());
CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
if (font->m_syntheticBoldOffset) {
CGContextSetTextPosition(cgContext, point.x() + translation.width() + font->m_syntheticBoldOffset, point.y() + translation.height());
CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
}
if (hasSimpleShadow)
graphicsContext->setShadow(shadowSize, shadowBlur, shadowColor);
wkRestoreFontSmoothingStyle(cgContext, oldFontSmoothingStyle);
}
