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/*
* Copyright (C) 2006 Apple Computer, 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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.
*/
#ifndef FontCache_h
#define FontCache_h
#include <limits.h>
#include <wtf/unicode/Unicode.h>
#if PLATFORM(WIN)
#include <objidl.h>
#include <mlang.h>
#endif
namespace WebCore
{
class AtomicString;
class Font;
class FontPlatformData;
class FontData;
class FontDescription;
class FontSelector;
class SimpleFontData;
class FontCache {
public:
static const FontData* getFontData(const Font&, int& familyIndex, FontSelector*);
static void releaseFontData(const SimpleFontData*);
// This method is implemented by the platform.
// FIXME: Font data returned by this method never go inactive because callers don't track and release them.
static const SimpleFontData* getFontDataForCharacters(const Font&, const UChar* characters, int length);
// Also implemented by the platform.
static void platformInit();
#if PLATFORM(WIN)
static IMLangFontLink2* getFontLinkInterface();
#endif
static bool fontExists(const FontDescription&, const AtomicString& family);
static FontPlatformData* getCachedFontPlatformData(const FontDescription&, const AtomicString& family, bool checkingAlternateName = false);
static SimpleFontData* getCachedFontData(const FontPlatformData*);
static FontPlatformData* getLastResortFallbackFont(const FontDescription&);
static size_t fontDataCount();
static size_t inactiveFontDataCount();
static void purgeInactiveFontData(int count = INT_MAX);
private:
// These methods are implemented by each platform.
static FontPlatformData* getSimilarFontPlatformData(const Font&);
static FontPlatformData* createFontPlatformData(const FontDescription&, const AtomicString& family);
friend class SimpleFontData;
friend class FontFallbackList;
};
}
#endif
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