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/*
* Copyright (C) 2008, 2009 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 SegmentedFontData_h
#define SegmentedFontData_h
#include "platform/PlatformExport.h"
#include "platform/fonts/FontData.h"
#include "wtf/Vector.h"
namespace WebCore {
class SimpleFontData;
struct FontDataRange {
FontDataRange(UChar32 from, UChar32 to, PassRefPtr<SimpleFontData> fontData)
: m_from(from)
, m_to(to)
, m_fontData(fontData)
{
}
UChar32 from() const { return m_from; }
UChar32 to() const { return m_to; }
bool isEntireRange() const { return !m_from && m_to >= 0x10ffff; }
PassRefPtr<SimpleFontData> fontData() const { return m_fontData; }
private:
UChar32 m_from;
UChar32 m_to;
RefPtr<SimpleFontData> m_fontData;
};
class PLATFORM_EXPORT SegmentedFontData : public FontData {
public:
static PassRefPtr<SegmentedFontData> create() { return adoptRef(new SegmentedFontData); }
virtual ~SegmentedFontData();
void appendRange(const FontDataRange& range) { m_ranges.append(range); }
unsigned numRanges() const { return m_ranges.size(); }
const FontDataRange& rangeAt(unsigned i) const { return m_ranges[i]; }
#ifndef NDEBUG
virtual String description() const;
#endif
private:
SegmentedFontData() { }
virtual const SimpleFontData* fontDataForCharacter(UChar32) const OVERRIDE;
virtual bool containsCharacters(const UChar*, int length) const OVERRIDE;
virtual bool isCustomFont() const OVERRIDE;
virtual bool isLoading() const OVERRIDE;
virtual bool isLoadingFallback() const OVERRIDE;
virtual bool isSegmented() const OVERRIDE;
bool containsCharacter(UChar32) const;
Vector<FontDataRange, 1> m_ranges;
};
inline SegmentedFontData* toSegmentedFontData(FontData* fontData)
{
ASSERT_WITH_SECURITY_IMPLICATION(!fontData || fontData->isSegmented());
return static_cast<SegmentedFontData*>(fontData);
}
} // namespace WebCore
#endif // SegmentedFontData_h
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