/**
* This file is part of the html renderer for KDE.
*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2003, 2006 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#import "config.h"
#import "Font.h"
#import "Logging.h"
#import "BlockExceptions.h"
#import "FoundationExtras.h"
#import "FontFallbackList.h"
#import "GraphicsContext.h"
#import "Settings.h"
#import "FontData.h"
#import "IntRect.h"
#import "WebCoreSystemInterface.h"
#import "WebCoreTextRenderer.h"
#import "WKGraphics.h"
#import
#define SYNTHETIC_OBLIQUE_ANGLE 14
#define POP_DIRECTIONAL_FORMATTING 0x202C
#define LEFT_TO_RIGHT_OVERRIDE 0x202D
#define RIGHT_TO_LEFT_OVERRIDE 0x202E
#if defined(__LP64__)
#define URefCon void*
#else
#define URefCon UInt32
#endif
using namespace std;
namespace WebCore {
Font::Font(const FontPlatformData& fontData)
:m_letterSpacing(0), m_wordSpacing(0)
{
m_fontList = new FontFallbackList();
m_fontList->setPlatformFont(fontData);
m_fontDescription.setSpecifiedSize (GSFontGetSize(fontData.font));
m_fontDescription.setComputedSize (GSFontGetSize(fontData.font));
m_fontDescription.setItalic (GSFontGetTraits(fontData.font) & GSItalicFontMask);
m_fontDescription.setWeight ((GSFontGetTraits(fontData.font) & GSBoldFontMask)?cBoldWeight:cNormalWeight);
}
void Font::drawGlyphs(GraphicsContext* context, const FontData* font, const GlyphBuffer& glyphBuffer, int from, int numGlyphs, const FloatPoint& point, bool setColor) const
{
// FIXME: Grab the CGContext from the GraphicsContext eventually, when we have made sure to shield against flipping caused by calls into us
// from Safari.
CGContextRef cgContext = WKGetCurrentGraphicsContext();
// Enable font smoothing
bool originalShouldUseFontSmoothing = CGContextGetShouldSmoothFonts(cgContext);
bool shouldUseFontSmoothing = WebCoreShouldUseFontSmoothing();
if (shouldUseFontSmoothing != originalShouldUseFontSmoothing)
CGContextSetShouldSmoothFonts(cgContext, shouldUseFontSmoothing);
#if defined(__arm__)
// Font smoothing style
CGFontSmoothingStyle originalFontSmoothingStyle = CGContextGetFontSmoothingStyle(cgContext);
CGFontSmoothingStyle fontSmoothingStyle = WebCoreFontSmoothingStyle();
if (shouldUseFontSmoothing && fontSmoothingStyle != originalFontSmoothingStyle)
CGContextSetFontSmoothingStyle(cgContext, fontSmoothingStyle);
// Font antialiasing style
CGFontAntialiasingStyle originalFontAntialiasingStyle = CGContextGetFontAntialiasingStyle(cgContext);
CGFontAntialiasingStyle fontAntialiasingStyle = WebCoreFontAntialiasingStyle();
if (fontAntialiasingStyle != originalFontAntialiasingStyle)
CGContextSetFontAntialiasingStyle(cgContext, fontAntialiasingStyle);
#endif /* defined(__arm__) */
const FontPlatformData& platformData = font->platformData();
GSFontSetFont(cgContext, platformData.font);
float fontSize = GSFontGetSize(platformData.font);
CGAffineTransform matrix = CGAffineTransformMakeScale(fontSize, fontSize);
matrix.b = -matrix.b;
matrix.d = -matrix.d;
if (platformData.syntheticOblique)
matrix = CGAffineTransformConcat(matrix, CGAffineTransformMake(1, 0, -tanf(SYNTHETIC_OBLIQUE_ANGLE * acosf(0) / 90), 1, 0, 0));
CGContextSetTextMatrix(cgContext, matrix);
CGContextSetFontSize(cgContext, 1.0f);
if (setColor) {
CGColorRef color = cgColor(context->pen().color());
GSColorSetColor(cgContext, color);
CGColorRelease (color);
}
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);
}
if (shouldUseFontSmoothing != originalShouldUseFontSmoothing)
CGContextSetShouldSmoothFonts(cgContext, originalShouldUseFontSmoothing);
#if defined(__arm__)
if (shouldUseFontSmoothing && fontSmoothingStyle != originalFontSmoothingStyle)
CGContextSetFontSmoothingStyle(cgContext, originalFontSmoothingStyle);
if (fontAntialiasingStyle != originalFontAntialiasingStyle)
CGContextSetFontAntialiasingStyle(cgContext, originalFontAntialiasingStyle);
#endif /* defined(__arm__) */
}
}