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https://github.com/flutter/flutter.git
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88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
/*
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* Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SKY_ENGINE_PLATFORM_FONTS_SEGMENTEDFONTDATA_H_
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#define SKY_ENGINE_PLATFORM_FONTS_SEGMENTEDFONTDATA_H_
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#include "flutter/sky/engine/platform/PlatformExport.h"
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#include "flutter/sky/engine/platform/fonts/FontData.h"
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#include "flutter/sky/engine/wtf/Vector.h"
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namespace blink {
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class SimpleFontData;
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struct FontDataRange {
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FontDataRange(UChar32 from, UChar32 to, PassRefPtr<SimpleFontData> fontData)
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: m_from(from), m_to(to), m_fontData(fontData) {}
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UChar32 from() const { return m_from; }
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UChar32 to() const { return m_to; }
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bool isEntireRange() const { return !m_from && m_to >= 0x10ffff; }
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PassRefPtr<SimpleFontData> fontData() const { return m_fontData; }
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private:
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UChar32 m_from;
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UChar32 m_to;
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RefPtr<SimpleFontData> m_fontData;
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};
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class PLATFORM_EXPORT SegmentedFontData : public FontData {
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public:
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static PassRefPtr<SegmentedFontData> create() {
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return adoptRef(new SegmentedFontData);
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}
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virtual ~SegmentedFontData();
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void appendRange(const FontDataRange& range) { m_ranges.append(range); }
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unsigned numRanges() const { return m_ranges.size(); }
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const FontDataRange& rangeAt(unsigned i) const { return m_ranges[i]; }
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bool containsCharacter(UChar32) const;
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#ifndef NDEBUG
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virtual String description() const override;
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#endif
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private:
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SegmentedFontData() {}
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virtual const SimpleFontData* fontDataForCharacter(UChar32) const override;
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virtual bool isCustomFont() const override;
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virtual bool isLoading() const override;
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virtual bool isLoadingFallback() const override;
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virtual bool isSegmented() const override;
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virtual bool shouldSkipDrawing() const override;
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Vector<FontDataRange, 1> m_ranges;
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};
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DEFINE_FONT_DATA_TYPE_CASTS(SegmentedFontData, true);
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} // namespace blink
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#endif // SKY_ENGINE_PLATFORM_FONTS_SEGMENTEDFONTDATA_H_
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