mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
84 lines
3.2 KiB
C++
84 lines
3.2 KiB
C++
/*
|
|
* 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 SKY_ENGINE_PLATFORM_FONTS_FONTDATA_H_
|
|
#define SKY_ENGINE_PLATFORM_FONTS_FONTDATA_H_
|
|
|
|
#include "flutter/sky/engine/platform/PlatformExport.h"
|
|
#include "flutter/sky/engine/wtf/FastAllocBase.h"
|
|
#include "flutter/sky/engine/wtf/Forward.h"
|
|
#include "flutter/sky/engine/wtf/Noncopyable.h"
|
|
#include "flutter/sky/engine/wtf/PassRefPtr.h"
|
|
#include "flutter/sky/engine/wtf/RefCounted.h"
|
|
#include "flutter/sky/engine/wtf/unicode/Unicode.h"
|
|
|
|
namespace blink {
|
|
|
|
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;
|
|
};
|
|
|
|
#define DEFINE_FONT_DATA_TYPE_CASTS(thisType, predicate) \
|
|
template <typename T> \
|
|
inline thisType* to##thisType(const RefPtr<T>& fontData) { \
|
|
return to##thisType(fontData.get()); \
|
|
} \
|
|
DEFINE_TYPE_CASTS(thisType, FontData, fontData, \
|
|
fontData->isSegmented() == predicate, \
|
|
fontData.isSegmented() == predicate)
|
|
|
|
} // namespace blink
|
|
|
|
#endif // SKY_ENGINE_PLATFORM_FONTS_FONTDATA_H_
|