diff options
Diffstat (limited to 'src/3rdparty/webkit/WebCore/platform/graphics/FontCache.h')
-rw-r--r-- | src/3rdparty/webkit/WebCore/platform/graphics/FontCache.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/WebCore/platform/graphics/FontCache.h b/src/3rdparty/webkit/WebCore/platform/graphics/FontCache.h new file mode 100644 index 0000000..816fe64 --- /dev/null +++ b/src/3rdparty/webkit/WebCore/platform/graphics/FontCache.h @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2006, 2008 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/Vector.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 void getTraitsInFamily(const AtomicString&, Vector<unsigned>&); + + static FontPlatformData* getCachedFontPlatformData(const FontDescription&, const AtomicString& family, bool checkingAlternateName = false); + static SimpleFontData* getCachedFontData(const FontPlatformData*); + static FontPlatformData* getLastResortFallbackFont(const FontDescription&); + + static void addClient(FontSelector*); + static void removeClient(FontSelector*); + + static unsigned generation(); + static void invalidate(); + + 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 |