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Diffstat (limited to 'WebCore/platform/graphics/win/FontCGWin.cpp')
| -rw-r--r-- | WebCore/platform/graphics/win/FontCGWin.cpp | 392 |
1 files changed, 0 insertions, 392 deletions
diff --git a/WebCore/platform/graphics/win/FontCGWin.cpp b/WebCore/platform/graphics/win/FontCGWin.cpp deleted file mode 100644 index 8012722..0000000 --- a/WebCore/platform/graphics/win/FontCGWin.cpp +++ /dev/null @@ -1,392 +0,0 @@ -/* - * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY - * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "config.h" -#include "Font.h" - -#include "AffineTransform.h" -#include "FloatConversion.h" -#include "GlyphBuffer.h" -#include "GraphicsContext.h" -#include "IntRect.h" -#include "SimpleFontData.h" -#include "UniscribeController.h" -#include "WebCoreTextRenderer.h" -#include <ApplicationServices/ApplicationServices.h> -#include <WebKitSystemInterface/WebKitSystemInterface.h> -#include <wtf/MathExtras.h> - -namespace WebCore { - -const int syntheticObliqueAngle = 14; - -static inline CGFloat toCGFloat(FIXED f) -{ - return f.value + f.fract / CGFloat(65536.0); -} - -static CGPathRef createPathForGlyph(HDC hdc, Glyph glyph) -{ - CGMutablePathRef path = CGPathCreateMutable(); - - static const MAT2 identity = { 0, 1, 0, 0, 0, 0, 0, 1 }; - GLYPHMETRICS glyphMetrics; - // GGO_NATIVE matches the outline perfectly when Windows font smoothing is off. - // GGO_NATIVE | GGO_UNHINTED does not match perfectly either when Windows font smoothing is on or off. - DWORD outlineLength = GetGlyphOutline(hdc, glyph, GGO_GLYPH_INDEX | GGO_NATIVE, &glyphMetrics, 0, 0, &identity); - ASSERT(outlineLength >= 0); - if (outlineLength < 0) - return path; - - Vector<UInt8> outline(outlineLength); - GetGlyphOutline(hdc, glyph, GGO_GLYPH_INDEX | GGO_NATIVE, &glyphMetrics, outlineLength, outline.data(), &identity); - - unsigned offset = 0; - while (offset < outlineLength) { - LPTTPOLYGONHEADER subpath = reinterpret_cast<LPTTPOLYGONHEADER>(outline.data() + offset); - ASSERT(subpath->dwType == TT_POLYGON_TYPE); - if (subpath->dwType != TT_POLYGON_TYPE) - return path; - - CGPathMoveToPoint(path, 0, toCGFloat(subpath->pfxStart.x), toCGFloat(subpath->pfxStart.y)); - - unsigned subpathOffset = sizeof(*subpath); - while (subpathOffset < subpath->cb) { - LPTTPOLYCURVE segment = reinterpret_cast<LPTTPOLYCURVE>(reinterpret_cast<UInt8*>(subpath) + subpathOffset); - switch (segment->wType) { - case TT_PRIM_LINE: - for (unsigned i = 0; i < segment->cpfx; i++) - CGPathAddLineToPoint(path, 0, toCGFloat(segment->apfx[i].x), toCGFloat(segment->apfx[i].y)); - break; - - case TT_PRIM_QSPLINE: - for (unsigned i = 0; i < segment->cpfx; i++) { - CGFloat x = toCGFloat(segment->apfx[i].x); - CGFloat y = toCGFloat(segment->apfx[i].y); - CGFloat cpx; - CGFloat cpy; - - if (i == segment->cpfx - 2) { - cpx = toCGFloat(segment->apfx[i + 1].x); - cpy = toCGFloat(segment->apfx[i + 1].y); - i++; - } else { - cpx = (toCGFloat(segment->apfx[i].x) + toCGFloat(segment->apfx[i + 1].x)) / 2; - cpy = (toCGFloat(segment->apfx[i].y) + toCGFloat(segment->apfx[i + 1].y)) / 2; - } - - CGPathAddQuadCurveToPoint(path, 0, x, y, cpx, cpy); - } - break; - - case TT_PRIM_CSPLINE: - for (unsigned i = 0; i < segment->cpfx; i += 3) { - CGFloat cp1x = toCGFloat(segment->apfx[i].x); - CGFloat cp1y = toCGFloat(segment->apfx[i].y); - CGFloat cp2x = toCGFloat(segment->apfx[i + 1].x); - CGFloat cp2y = toCGFloat(segment->apfx[i + 1].y); - CGFloat x = toCGFloat(segment->apfx[i + 2].x); - CGFloat y = toCGFloat(segment->apfx[i + 2].y); - - CGPathAddCurveToPoint(path, 0, cp1x, cp1y, cp2x, cp2y, x, y); - } - break; - - default: - ASSERT_NOT_REACHED(); - return path; - } - - subpathOffset += sizeof(*segment) + (segment->cpfx - 1) * sizeof(segment->apfx[0]); - } - CGPathCloseSubpath(path); - offset += subpath->cb; - } - return path; -} - -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. - int lineGap = font->lineGap(); - textRect = IntRect(point.x() - (font->ascent() + font->descent()) / 2, point.y() - font->ascent() - lineGap, totalWidth + font->ascent() + font->descent(), font->lineSpacing()); - bitmap.set(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.topLeft()); - } 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(); - - 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); -} - -} |