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author | Upstream <upstream-import@none> | 1970-01-12 13:46:40 +0000 |
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committer | Upstream <upstream-import@none> | 1970-01-12 13:46:40 +0000 |
commit | d8543bb6618c17b12da906afa77d216f58cf4058 (patch) | |
tree | c58dc05ed86825bd0ef8d305d58c8205106b540f /WebCore/platform/graphics/win/FontCGWin.cpp | |
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external/webkit r30707
Diffstat (limited to 'WebCore/platform/graphics/win/FontCGWin.cpp')
-rw-r--r-- | WebCore/platform/graphics/win/FontCGWin.cpp | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/WebCore/platform/graphics/win/FontCGWin.cpp b/WebCore/platform/graphics/win/FontCGWin.cpp new file mode 100644 index 0000000..8b59a48 --- /dev/null +++ b/WebCore/platform/graphics/win/FontCGWin.cpp @@ -0,0 +1,127 @@ +/* + * Copyright (C) 2006, 2007, 2008 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 "GlyphBuffer.h" +#include "GraphicsContext.h" +#include "IntRect.h" +#include "SimpleFontData.h" +#include "UniscribeController.h" +#include <ApplicationServices/ApplicationServices.h> +#include <WebKitSystemInterface/WebKitSystemInterface.h> +#include <wtf/MathExtras.h> + +namespace WebCore { + +const int syntheticObliqueAngle = 14; + +void Font::drawGlyphs(GraphicsContext* graphicsContext, const SimpleFontData* font, const GlyphBuffer& glyphBuffer, + int from, int numGlyphs, const FloatPoint& point) const +{ + if (font->m_font.useGDI()) { + // FIXME: Support alpha blending. + // FIXME: Support text stroke/fill. + // FIXME: Support text shadow. + Color fillColor = graphicsContext->fillColor(); + if (fillColor.alpha() == 0) + return; + + // 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]; + } + + // We put slop into this rect, since glyphs can overflow the ascent/descent bounds and the left/right edges. + int lineGap = font->lineGap(); + IntRect textRect(point.x() - lineGap, point.y() - font->ascent() - lineGap, totalWidth + 2 * lineGap, font->lineSpacing()); + HDC hdc = graphicsContext->getWindowsContext(textRect); + SelectObject(hdc, font->m_font.hfont()); + + // Set the correct color. + HDC textDrawingDC = hdc; + 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); + } + ExtTextOut(hdc, point.x(), point.y(), ETO_GLYPH_INDEX, 0, (WCHAR*)glyphBuffer.glyphs(from), numGlyphs, gdiAdvances.data()); + + graphicsContext->releaseWindowsContext(hdc, textRect); + return; + } + + CGContextRef cgContext = graphicsContext->platformContext(); + + uint32_t oldFontSmoothingStyle = wkSetFontSmoothingStyle(cgContext); + + 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 * acosf(0) / 90.0f); + 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); + + 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); +} + +} |