/*
* Copyright (C) 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.
*/
#ifndef FontData_h
#define FontData_h
#include "platform/PlatformExport.h"
#include "wtf/FastAllocBase.h"
#include "wtf/Forward.h"
#include "wtf/Noncopyable.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/unicode/Unicode.h"
namespace WebCore {
class SimpleFontData;
class PLATFORM_EXPORT FontData : public RefCounted<FontData> {
WTF_MAKE_NONCOPYABLE(FontData); WTF_MAKE_FAST_ALLOCATED;
public:
FontData()
: m_maxGlyphPageTreeLevel(0)
{
}
virtual ~FontData();
virtual const SimpleFontData* fontDataForCharacter(UChar32) const = 0;
virtual bool isCustomFont() const = 0;
virtual bool isLoading() const = 0;
// Returns whether this is a temporary font data for a custom font which is not yet loaded.
virtual bool isLoadingFallback() const = 0;
virtual bool isSegmented() const = 0;
virtual bool shouldSkipDrawing() const = 0;
void setMaxGlyphPageTreeLevel(unsigned level) const { m_maxGlyphPageTreeLevel = level; }
unsigned maxGlyphPageTreeLevel() const { return m_maxGlyphPageTreeLevel; }
#ifndef NDEBUG
virtual String description() const = 0;
#endif
private:
mutable unsigned m_maxGlyphPageTreeLevel;
};
} // namespace WebCore
#endif // FontData_h