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/*
* Copyright (C) 2013 Google, 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef CustomFontData_h
#define CustomFontData_h
#include "platform/PlatformExport.h"
#include "platform/fonts/Glyph.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include <unicode/uchar.h>
namespace WebCore {
class CSSFontFaceSource;
struct GlyphData;
class GlyphPage;
class SimpleFontData;
struct WidthIterator;
class PLATFORM_EXPORT CustomFontData : public RefCounted<CustomFontData> {
public:
static PassRefPtr<CustomFontData> create(bool isLoadingFallback = false)
{
return adoptRef(new CustomFontData(isLoadingFallback));
}
virtual ~CustomFontData() { }
virtual void beginLoadIfNeeded() const { };
bool isLoading() const { return m_isLoadingFallback && m_isUsed; }
bool isLoadingFallback() const { return m_isLoadingFallback; }
virtual bool isSVGFont() const { return false; }
virtual void initializeFontData(SimpleFontData*, float) { }
virtual float widthForSVGGlyph(Glyph, float) const { return 0.0f; }
virtual bool fillSVGGlyphPage(GlyphPage*, unsigned, unsigned, UChar*, unsigned, const SimpleFontData*) const { return false; }
virtual bool applySVGGlyphSelection(WidthIterator&, GlyphData&, bool, int, unsigned&) const { return false; }
virtual void setCSSFontFaceSource(CSSFontFaceSource* source) { ASSERT_NOT_REACHED(); }
virtual void clearCSSFontFaceSource() { }
protected:
CustomFontData(bool isLoadingFallback)
: m_isLoadingFallback(isLoadingFallback)
, m_isUsed(false)
{
}
bool m_isLoadingFallback; // Whether or not this is a temporary font data for a custom font which is not yet loaded.
mutable bool m_isUsed;
};
}
#endif // CustomFontData_h
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