void QFontEngineMac::draw(CGContextRef ctx, qreal x, qreal y, const QTextItemInt &ti, int paintDeviceHeight)
{
QVarLengthArray<QFixedPoint> positions;
QVarLengthArray<glyph_t> glyphs;
QTransform matrix;
matrix.translate(x, y);
getGlyphPositions(ti.glyphs, ti.num_glyphs, matrix, ti.flags, glyphs, positions);
if (glyphs.size() == 0)
return;
CGContextSetFontSize(ctx, fontDef.pixelSize);
CGAffineTransform oldTextMatrix = CGContextGetTextMatrix(ctx);
CGAffineTransform cgMatrix = CGAffineTransformMake(1, 0, 0, -1, 0, -paintDeviceHeight);
CGAffineTransformConcat(cgMatrix, oldTextMatrix);
if (synthesisFlags & QFontEngine::SynthesizedItalic)
cgMatrix = CGAffineTransformConcat(cgMatrix, CGAffineTransformMake(1, 0, -tanf(14 * acosf(0) / 90), 1, 0, 0));
cgMatrix = CGAffineTransformConcat(cgMatrix, multiEngine->transform);
CGContextSetTextMatrix(ctx, cgMatrix);
CGContextSetTextDrawingMode(ctx, kCGTextFill);
QVarLengthArray<CGSize> advances(glyphs.size());
QVarLengthArray<CGGlyph> cgGlyphs(glyphs.size());
for (int i = 0; i < glyphs.size() - 1; ++i) {
advances[i].width = (positions[i + 1].x - positions[i].x).toReal();
advances[i].height = (positions[i + 1].y - positions[i].y).toReal();
cgGlyphs[i] = glyphs[i];
}
advances[glyphs.size() - 1].width = 0;
advances[glyphs.size() - 1].height = 0;
cgGlyphs[glyphs.size() - 1] = glyphs[glyphs.size() - 1];
CGContextSetFont(ctx, cgFont);
CGContextSetTextPosition(ctx, positions[0].x.toReal(), positions[0].y.toReal());
CGContextShowGlyphsWithAdvances(ctx, cgGlyphs.data(), advances.data(), glyphs.size());
if (synthesisFlags & QFontEngine::SynthesizedBold) {
CGContextSetTextPosition(ctx, positions[0].x.toReal() + 0.5 * lineThickness().toReal(),
positions[0].y.toReal());
CGContextShowGlyphsWithAdvances(ctx, cgGlyphs.data(), advances.data(), glyphs.size());
}
CGContextSetTextMatrix(ctx, oldTextMatrix);
}
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 drawTextWithSpacing(GraphicsContext* graphicsContext, const SimpleFontData* font, const wxColour& color, const GlyphBuffer& glyphBuffer, int from, int numGlyphs, const FloatPoint& point)
{
graphicsContext->save();
wxGCDC* dc = static_cast<wxGCDC*>(graphicsContext->platformContext());
wxFont* wxfont = font->getWxFont();
graphicsContext->setFillColor(graphicsContext->fillColor(), ColorSpaceDeviceRGB);
CGContextRef cgContext = static_cast<CGContextRef>(dc->GetGraphicsContext()->GetNativeContext());
CGFontRef cgFont = font->platformData().cgFont();
CGContextSetFont(cgContext, cgFont);
CGContextSetFontSize(cgContext, wxfont->GetPointSize());
CGFloat red, green, blue, alpha;
graphicsContext->fillColor().getRGBA(red, green, blue, alpha);
CGContextSetRGBFillColor(cgContext, red, green, blue, alpha);
CGAffineTransform matrix = CGAffineTransformIdentity;
matrix.b = -matrix.b;
matrix.d = -matrix.d;
CGContextSetTextMatrix(cgContext, matrix);
CGContextSetTextPosition(cgContext, point.x(), point.y());
CGContextShowGlyphsWithAdvances(cgContext, glyphBuffer.glyphs(from), glyphBuffer.advances(from), numGlyphs);
if (cgFont)
CGFontRelease(cgFont);
graphicsContext->restore();
}
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 drawTextWithSpacing(GraphicsContext* graphicsContext, const SimpleFontData* font, const wxColour& color, const GlyphBuffer& glyphBuffer, int from, int numGlyphs, const FloatPoint& point)
{
graphicsContext->save();
wxGCDC* dc = static_cast<wxGCDC*>(graphicsContext->platformContext());
wxFont* wxfont = font->getWxFont();
graphicsContext->setFillColor(graphicsContext->fillColor(), DeviceColorSpace);
CGContextRef cgContext = static_cast<CGContextRef>(dc->GetGraphicsContext()->GetNativeContext());
CGFontRef cgFont;
#ifdef wxOSX_USE_CORE_TEXT && wxOSX_USE_CORE_TEXT
cgFont = CTFontCopyGraphicsFont((CTFontRef)wxfont->OSXGetCTFont(), NULL);
#else
ATSFontRef fontRef;
fontRef = FMGetATSFontRefFromFont(wxfont->MacGetATSUFontID());
if (fontRef)
cgFont = CGFontCreateWithPlatformFont((void*)&fontRef);
#endif
CGContextSetFont(cgContext, cgFont);
CGContextSetFontSize(cgContext, wxfont->GetPointSize());
CGFloat red, green, blue, alpha;
graphicsContext->fillColor().getRGBA(red, green, blue, alpha);
CGContextSetRGBFillColor(cgContext, red, green, blue, alpha);
CGAffineTransform matrix = CGAffineTransformIdentity;
matrix.b = -matrix.b;
matrix.d = -matrix.d;
CGContextSetTextMatrix(cgContext, matrix);
CGContextSetTextPosition(cgContext, point.x(), point.y());
const FloatSize* advanceSizes = static_cast<const FloatSize*>(glyphBuffer.advances(from));
int size = glyphBuffer.size() - from;
CGSize sizes[size];
CGGlyph glyphs[numGlyphs];
// if the function doesn't exist, we're probably on tiger and need to grab the
// function under its old name, CGFontGetGlyphsForUnicodes
if (!CGFontGetGlyphsForUnichars)
CGFontGetGlyphsForUnichars = (CGFontGetGlyphsForUnicharsPtr)dlsym(RTLD_DEFAULT, "CGFontGetGlyphsForUnicodes");
// Let's make sure we got the function under one name or another!
ASSERT(CGFontGetGlyphsForUnichars);
CGFontGetGlyphsForUnichars(cgFont, glyphBuffer.glyphs(from), glyphs, numGlyphs);
for (int i = 0; i < size; i++) {
FloatSize fsize = advanceSizes[i];
sizes[i] = CGSizeMake(fsize.width(), fsize.height());
}
CGContextShowGlyphsWithAdvances(cgContext, glyphs, sizes, numGlyphs);
if (cgFont)
CGFontRelease(cgFont);
graphicsContext->restore();
}
QImage QFontEngineMac::alphaMapForGlyph(glyph_t glyph)
{
const glyph_metrics_t br = boundingBox(glyph);
QImage im(qRound(br.width)+2, qRound(br.height)+2, QImage::Format_RGB32);
im.fill(0);
CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceRGB();
#if (MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4)
uint cgflags = kCGImageAlphaNoneSkipFirst;
#ifdef kCGBitmapByteOrder32Host //only needed because CGImage.h added symbols in the minor version
if(QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
cgflags |= kCGBitmapByteOrder32Host;
#endif
#else
CGImageAlphaInfo cgflags = kCGImageAlphaNoneSkipFirst;
#endif
CGContextRef ctx = CGBitmapContextCreate(im.bits(), im.width(), im.height(),
8, im.bytesPerLine(), colorspace,
cgflags);
CGColorSpaceRelease(colorspace);
CGContextSetFontSize(ctx, fontDef.pixelSize);
CGContextSetShouldAntialias(ctx, fontDef.pointSize > qt_antialiasing_threshold && !(fontDef.styleStrategy & QFont::NoAntialias));
CGAffineTransform oldTextMatrix = CGContextGetTextMatrix(ctx);
CGAffineTransform cgMatrix = CGAffineTransformMake(1, 0, 0, 1, 0, 0);
CGAffineTransformConcat(cgMatrix, oldTextMatrix);
if (synthesisFlags & QFontEngine::SynthesizedItalic)
cgMatrix = CGAffineTransformConcat(cgMatrix, CGAffineTransformMake(1, 0, tanf(14 * acosf(0) / 90), 1, 0, 0));
cgMatrix = CGAffineTransformConcat(cgMatrix, multiEngine->transform);
CGContextSetTextMatrix(ctx, cgMatrix);
CGContextSetRGBFillColor(ctx, 1, 1, 1, 1);
CGContextSetTextDrawingMode(ctx, kCGTextFill);
CGContextSetFont(ctx, cgFont);
qreal pos_x = -br.x.toReal()+1, pos_y = im.height()+br.y.toReal();
CGContextSetTextPosition(ctx, pos_x, pos_y);
CGSize advance;
advance.width = 0;
advance.height = 0;
CGGlyph cgGlyph = glyph;
CGContextShowGlyphsWithAdvances(ctx, &cgGlyph, &advance, 1);
if (synthesisFlags & QFontEngine::SynthesizedBold) {
CGContextSetTextPosition(ctx, pos_x + 0.5 * lineThickness().toReal(), pos_y);
CGContextShowGlyphsWithAdvances(ctx, &cgGlyph, &advance, 1);
}
CGContextRelease(ctx);
QImage indexed(im.width(), im.height(), QImage::Format_Indexed8);
QVector<QRgb> colors(256);
for (int i=0; i<256; ++i)
colors[i] = qRgba(0, 0, 0, i);
indexed.setColorTable(colors);
for (int y=0; y<im.height(); ++y) {
uint *src = (uint*) im.scanLine(y);
uchar *dst = indexed.scanLine(y);
for (int x=0; x<im.width(); ++x) {
*dst = qGray(*src);
++dst;
++src;
}
}
return indexed;
}
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);
}
