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/*
* This file is part of the internal font implementation.
* It should not be included by source files outside of it.
*
* Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
*
* 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef FontPlatformData_h
#define FontPlatformData_h
#include "StringImpl.h"
#ifdef __OBJC__
@class NSFont;
#else
class NSFont;
#endif
typedef struct CGFont* CGFontRef;
#ifndef BUILDING_ON_TIGER
typedef const struct __CTFont* CTFontRef;
#endif
#include <CoreFoundation/CFBase.h>
#include <objc/objc-auto.h>
#include <wtf/RetainPtr.h>
typedef UInt32 ATSUFontID;
namespace WebCore {
class String;
#ifndef BUILDING_ON_TIGER
inline CTFontRef toCTFontRef(NSFont *nsFont) { return reinterpret_cast<CTFontRef>(nsFont); }
#endif
struct FontPlatformData {
FontPlatformData(float size, bool syntheticBold, bool syntheticOblique)
: m_syntheticBold(syntheticBold)
, m_syntheticOblique(syntheticOblique)
, m_atsuFontID(0)
, m_size(size)
, m_font(0)
#ifdef BUILDING_ON_TIGER
, m_cgFont(0)
#endif
{
}
FontPlatformData(NSFont *nsFont, bool syntheticBold = false, bool syntheticOblique = false);
FontPlatformData(CGFontRef cgFont, ATSUFontID fontID, float size, bool syntheticBold, bool syntheticOblique)
: m_syntheticBold(syntheticBold)
, m_syntheticOblique(syntheticOblique)
, m_atsuFontID(fontID)
, m_size(size)
, m_font(0)
, m_cgFont(cgFont)
{
}
FontPlatformData(const FontPlatformData&);
~FontPlatformData();
FontPlatformData(WTF::HashTableDeletedValueType) : m_font(hashTableDeletedFontValue()) { }
bool isHashTableDeletedValue() const { return m_font == hashTableDeletedFontValue(); }
float size() const { return m_size; }
bool syntheticBold() const { return m_syntheticBold; }
bool syntheticOblique() const { return m_syntheticOblique; }
bool m_syntheticBold;
bool m_syntheticOblique;
ATSUFontID m_atsuFontID;
float m_size;
unsigned hash() const
{
ASSERT(m_font != 0 || m_cgFont == 0);
uintptr_t hashCodes[2] = { (uintptr_t)m_font, m_syntheticBold << 1 | m_syntheticOblique };
return StringImpl::computeHash(reinterpret_cast<UChar*>(hashCodes), sizeof(hashCodes) / sizeof(UChar));
}
const FontPlatformData& operator=(const FontPlatformData& f);
bool operator==(const FontPlatformData& other) const
{
return m_font == other.m_font && m_syntheticBold == other.m_syntheticBold && m_syntheticOblique == other.m_syntheticOblique &&
m_cgFont == other.m_cgFont && m_size == other.m_size && m_atsuFontID == other.m_atsuFontID;
}
NSFont *font() const { return m_font; }
void setFont(NSFont *font);
bool roundsGlyphAdvances() const;
bool allowsLigatures() const;
#ifndef BUILDING_ON_TIGER
CGFontRef cgFont() const { return m_cgFont.get(); }
#else
CGFontRef cgFont() const { return m_cgFont; }
#endif
#ifndef NDEBUG
String description() const;
#endif
private:
static NSFont *hashTableDeletedFontValue() { return reinterpret_cast<NSFont *>(-1); }
NSFont *m_font;
#ifndef BUILDING_ON_TIGER
RetainPtr<CGFontRef> m_cgFont;
#else
CGFontRef m_cgFont; // It is not necessary to refcount this, since either an NSFont owns it or some CachedFont has it referenced.
#endif
};
}
#endif
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