void Font::drawGlyphBuffer(GraphicsContext* context, const GlyphBuffer& glyphBuffer, const FloatPoint& point) const { // Draw each contiguous run of glyphs that use the same font data. const SimpleFontData* fontData = glyphBuffer.fontDataAt(0); FloatSize offset = glyphBuffer.offsetAt(0); FloatPoint startPoint(point); float nextX = startPoint.x(); int lastFrom = 0; int nextGlyph = 0; while (nextGlyph < glyphBuffer.size()) { const SimpleFontData* nextFontData = glyphBuffer.fontDataAt(nextGlyph); FloatSize nextOffset = glyphBuffer.offsetAt(nextGlyph); if (nextFontData != fontData || nextOffset != offset) { drawGlyphs(context, fontData, glyphBuffer, lastFrom, nextGlyph - lastFrom, startPoint); lastFrom = nextGlyph; fontData = nextFontData; offset = nextOffset; startPoint.setX(nextX); } nextX += glyphBuffer.advanceAt(nextGlyph); nextGlyph++; } drawGlyphs(context, fontData, glyphBuffer, lastFrom, nextGlyph - lastFrom, startPoint); }
void Font::drawGlyphBuffer(GraphicsContext* context, const TextRun& run, const GlyphBuffer& glyphBuffer, FloatPoint& point) const { #if !ENABLE(SVG_FONTS) UNUSED_PARAM(run); #endif // Draw each contiguous run of glyphs that use the same font data. const SimpleFontData* fontData = glyphBuffer.fontDataAt(0); FloatSize offset = glyphBuffer.offsetAt(0); FloatPoint startPoint(point.x(), point.y() - glyphBuffer.initialAdvance().height()); float nextX = startPoint.x() + glyphBuffer.advanceAt(0).width(); float nextY = startPoint.y() + glyphBuffer.advanceAt(0).height(); int lastFrom = 0; int nextGlyph = 1; #if ENABLE(SVG_FONTS) TextRun::RenderingContext* renderingContext = run.renderingContext(); #endif while (nextGlyph < glyphBuffer.size()) { const SimpleFontData* nextFontData = glyphBuffer.fontDataAt(nextGlyph); FloatSize nextOffset = glyphBuffer.offsetAt(nextGlyph); if (nextFontData != fontData || nextOffset != offset) { #if ENABLE(SVG_FONTS) if (renderingContext && fontData->isSVGFont()) renderingContext->drawSVGGlyphs(context, fontData, glyphBuffer, lastFrom, nextGlyph - lastFrom, startPoint); else #endif drawGlyphs(context, fontData, glyphBuffer, lastFrom, nextGlyph - lastFrom, startPoint); lastFrom = nextGlyph; fontData = nextFontData; offset = nextOffset; startPoint.setX(nextX); startPoint.setY(nextY); } nextX += glyphBuffer.advanceAt(nextGlyph).width(); nextY += glyphBuffer.advanceAt(nextGlyph).height(); nextGlyph++; } #if ENABLE(SVG_FONTS) if (renderingContext && fontData->isSVGFont()) renderingContext->drawSVGGlyphs(context, fontData, glyphBuffer, lastFrom, nextGlyph - lastFrom, startPoint); else { #endif drawGlyphs(context, fontData, glyphBuffer, lastFrom, nextGlyph - lastFrom, startPoint); point.setX(nextX); #if ENABLE(SVG_FONTS) } #endif }
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); }
static void drawGDIGlyphs(GraphicsContext* graphicsContext, const SimpleFontData* font, const GlyphBuffer& glyphBuffer, int from, int numGlyphs, const FloatPoint& point) { Color fillColor = graphicsContext->fillColor(); bool drawIntoBitmap = false; TextDrawingModeFlags drawingMode = graphicsContext->textDrawingMode(); if (drawingMode == TextModeFill) { if (!fillColor.alpha()) return; drawIntoBitmap = fillColor.alpha() != 255 || graphicsContext->inTransparencyLayer(); if (!drawIntoBitmap) { FloatSize offset; float blur; Color color; ColorSpace shadowColorSpace; graphicsContext->getShadow(offset, blur, color, shadowColorSpace); drawIntoBitmap = offset.width() || offset.height() || blur; } } // We have to convert CG's two-dimensional floating point advances to just horizontal integer advances. Vector<int, 2048> gdiAdvances; int totalWidth = 0; for (int i = 0; i < numGlyphs; i++) { gdiAdvances.append(lroundf(glyphBuffer.advanceAt(from + i))); totalWidth += gdiAdvances[i]; } HDC hdc = 0; OwnPtr<GraphicsContext::WindowsBitmap> bitmap; IntRect textRect; if (!drawIntoBitmap) hdc = graphicsContext->getWindowsContext(textRect, true, false); if (!hdc) { drawIntoBitmap = true; // We put slop into this rect, since glyphs can overflow the ascent/descent bounds and the left/right edges. // FIXME: Can get glyphs' optical bounds (even from CG) to get this right. const FontMetrics& fontMetrics = font->fontMetrics(); int lineGap = fontMetrics.lineGap(); textRect = IntRect(point.x() - (fontMetrics.ascent() + fontMetrics.descent()) / 2, point.y() - fontMetrics.ascent() - lineGap, totalWidth + fontMetrics.ascent() + fontMetrics.descent(), fontMetrics.lineSpacing()); bitmap = graphicsContext->createWindowsBitmap(textRect.size()); memset(bitmap->buffer(), 255, bitmap->bufferLength()); hdc = bitmap->hdc(); XFORM xform; xform.eM11 = 1.0f; xform.eM12 = 0.0f; xform.eM21 = 0.0f; xform.eM22 = 1.0f; xform.eDx = -textRect.x(); xform.eDy = -textRect.y(); SetWorldTransform(hdc, &xform); } SelectObject(hdc, font->platformData().hfont()); // Set the correct color. if (drawIntoBitmap) SetTextColor(hdc, RGB(0, 0, 0)); else SetTextColor(hdc, RGB(fillColor.red(), fillColor.green(), fillColor.blue())); SetBkMode(hdc, TRANSPARENT); SetTextAlign(hdc, TA_LEFT | TA_BASELINE); // Uniscribe gives us offsets to help refine the positioning of combining glyphs. FloatSize translation = glyphBuffer.offsetAt(from); if (translation.width() || translation.height()) { XFORM xform; xform.eM11 = 1.0; xform.eM12 = 0; xform.eM21 = 0; xform.eM22 = 1.0; xform.eDx = translation.width(); xform.eDy = translation.height(); ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY); } if (drawingMode == TextModeFill) { XFORM xform; xform.eM11 = 1.0; xform.eM12 = 0; xform.eM21 = font->platformData().syntheticOblique() ? -tanf(syntheticObliqueAngle * piFloat / 180.0f) : 0; xform.eM22 = 1.0; xform.eDx = point.x(); xform.eDy = point.y(); ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY); ExtTextOut(hdc, 0, 0, ETO_GLYPH_INDEX, 0, reinterpret_cast<const WCHAR*>(glyphBuffer.glyphs(from)), numGlyphs, gdiAdvances.data()); if (font->syntheticBoldOffset()) { xform.eM21 = 0; xform.eDx = font->syntheticBoldOffset(); xform.eDy = 0; ModifyWorldTransform(hdc, &xform, MWT_LEFTMULTIPLY); ExtTextOut(hdc, 0, 0, ETO_GLYPH_INDEX, 0, reinterpret_cast<const WCHAR*>(glyphBuffer.glyphs(from)), numGlyphs, gdiAdvances.data()); } } else { XFORM xform; GetWorldTransform(hdc, &xform); AffineTransform hdcTransform(xform.eM11, xform.eM21, xform.eM12, xform.eM22, xform.eDx, xform.eDy); CGAffineTransform initialGlyphTransform = hdcTransform.isInvertible() ? hdcTransform.inverse() : CGAffineTransformIdentity; if (font->platformData().syntheticOblique()) initialGlyphTransform = CGAffineTransformConcat(initialGlyphTransform, CGAffineTransformMake(1, 0, tanf(syntheticObliqueAngle * piFloat / 180.0f), 1, 0, 0)); initialGlyphTransform.tx = 0; initialGlyphTransform.ty = 0; CGContextRef cgContext = graphicsContext->platformContext(); CGContextSaveGState(cgContext); BOOL fontSmoothingEnabled = false; SystemParametersInfo(SPI_GETFONTSMOOTHING, 0, &fontSmoothingEnabled, 0); CGContextSetShouldAntialias(cgContext, fontSmoothingEnabled); CGContextScaleCTM(cgContext, 1.0, -1.0); CGContextTranslateCTM(cgContext, point.x() + glyphBuffer.offsetAt(from).width(), -(point.y() + glyphBuffer.offsetAt(from).height())); for (unsigned i = 0; i < numGlyphs; ++i) { RetainPtr<CGPathRef> glyphPath(AdoptCF, createPathForGlyph(hdc, glyphBuffer.glyphAt(from + i))); CGContextSaveGState(cgContext); CGContextConcatCTM(cgContext, initialGlyphTransform); if (drawingMode & TextModeFill) { CGContextAddPath(cgContext, glyphPath.get()); CGContextFillPath(cgContext); if (font->syntheticBoldOffset()) { CGContextTranslateCTM(cgContext, font->syntheticBoldOffset(), 0); CGContextAddPath(cgContext, glyphPath.get()); CGContextFillPath(cgContext); CGContextTranslateCTM(cgContext, -font->syntheticBoldOffset(), 0); } } if (drawingMode & TextModeStroke) { CGContextAddPath(cgContext, glyphPath.get()); CGContextStrokePath(cgContext); if (font->syntheticBoldOffset()) { CGContextTranslateCTM(cgContext, font->syntheticBoldOffset(), 0); CGContextAddPath(cgContext, glyphPath.get()); CGContextStrokePath(cgContext); CGContextTranslateCTM(cgContext, -font->syntheticBoldOffset(), 0); } } CGContextRestoreGState(cgContext); CGContextTranslateCTM(cgContext, gdiAdvances[i], 0); } CGContextRestoreGState(cgContext); } if (drawIntoBitmap) { UInt8* buffer = bitmap->buffer(); unsigned bufferLength = bitmap->bufferLength(); for (unsigned i = 0; i < bufferLength; i += 4) { // Use green, which is always in the middle. UInt8 alpha = (255 - buffer[i + 1]) * fillColor.alpha() / 255; buffer[i] = fillColor.blue(); buffer[i + 1] = fillColor.green(); buffer[i + 2] = fillColor.red(); buffer[i + 3] = alpha; } graphicsContext->drawWindowsBitmap(bitmap.get(), textRect.location()); } else graphicsContext->releaseWindowsContext(hdc, textRect, true, false); }
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); }