mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
135 lines
5.2 KiB
C++
135 lines
5.2 KiB
C++
/*
|
|
* Copyright (c) 2006, 2007, 2008, Google 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:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * 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.
|
|
* * Neither the name of Google Inc. nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "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 THE COPYRIGHT
|
|
* OWNER 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_FONTPLATFORMDATA_H_
|
|
#define SKY_ENGINE_PLATFORM_FONTS_FONTPLATFORMDATA_H_
|
|
|
|
#include "flutter/sky/engine/platform/SharedBuffer.h"
|
|
#include "flutter/sky/engine/platform/fonts/FontDescription.h"
|
|
#include "flutter/sky/engine/platform/fonts/FontOrientation.h"
|
|
#include "flutter/sky/engine/platform/fonts/FontRenderStyle.h"
|
|
#include "flutter/sky/engine/platform/fonts/opentype/OpenTypeVerticalData.h"
|
|
#include "flutter/sky/engine/wtf/Forward.h"
|
|
#include "flutter/sky/engine/wtf/HashTableDeletedValueType.h"
|
|
#include "flutter/sky/engine/wtf/RefPtr.h"
|
|
#include "flutter/sky/engine/wtf/text/CString.h"
|
|
#include "flutter/sky/engine/wtf/text/StringImpl.h"
|
|
#include "third_party/skia/include/core/SkPaint.h"
|
|
|
|
class SkTypeface;
|
|
typedef uint32_t SkFontID;
|
|
|
|
namespace blink {
|
|
|
|
class GraphicsContext;
|
|
class HarfBuzzFace;
|
|
|
|
class PLATFORM_EXPORT FontPlatformData {
|
|
public:
|
|
// Used for deleted values in the font cache's hash tables. The hash table
|
|
// will create us with this structure, and it will compare other values
|
|
// to this "Deleted" one. It expects the Deleted one to be differentiable
|
|
// from the 0 one (created with the empty constructor), so we can't just
|
|
// set everything to 0.
|
|
FontPlatformData(WTF::HashTableDeletedValueType);
|
|
FontPlatformData();
|
|
FontPlatformData(float textSize, bool syntheticBold, bool syntheticItalic);
|
|
FontPlatformData(const FontPlatformData&);
|
|
FontPlatformData(sk_sp<SkTypeface>,
|
|
const char* name,
|
|
float textSize,
|
|
bool syntheticBold,
|
|
bool syntheticItalic,
|
|
FontOrientation = Horizontal,
|
|
bool subpixelTextPosition = defaultUseSubpixelPositioning());
|
|
FontPlatformData(const FontPlatformData& src, float textSize);
|
|
~FontPlatformData();
|
|
|
|
String fontFamilyName() const;
|
|
float size() const { return m_textSize; }
|
|
bool isFixedPitch() const;
|
|
|
|
SkTypeface* typeface() const { return m_typeface.get(); }
|
|
HarfBuzzFace* harfBuzzFace() const;
|
|
SkFontID uniqueID() const;
|
|
unsigned hash() const;
|
|
|
|
FontOrientation orientation() const { return m_orientation; }
|
|
void setOrientation(FontOrientation orientation) {
|
|
m_orientation = orientation;
|
|
}
|
|
void setSyntheticBold(bool syntheticBold) { m_syntheticBold = syntheticBold; }
|
|
void setSyntheticItalic(bool syntheticItalic) {
|
|
m_syntheticItalic = syntheticItalic;
|
|
}
|
|
bool operator==(const FontPlatformData&) const;
|
|
FontPlatformData& operator=(const FontPlatformData&);
|
|
bool isHashTableDeletedValue() const { return m_isHashTableDeletedValue; }
|
|
bool fontContainsCharacter(UChar32 character);
|
|
|
|
#if ENABLE(OPENTYPE_VERTICAL)
|
|
PassRefPtr<OpenTypeVerticalData> verticalData() const;
|
|
PassRefPtr<SharedBuffer> openTypeTable(uint32_t table) const;
|
|
#endif
|
|
|
|
#ifndef NDEBUG
|
|
String description() const;
|
|
#endif
|
|
|
|
// The returned styles are all actual styles without
|
|
// FontRenderStyle::NoPreference.
|
|
const FontRenderStyle& fontRenderStyle() const { return m_style; }
|
|
void setupPaint(SkPaint*, GraphicsContext* = 0) const;
|
|
|
|
static void setHinting(SkPaint::Hinting);
|
|
static void setAutoHint(bool);
|
|
static void setUseBitmaps(bool);
|
|
static void setAntiAlias(bool);
|
|
static void setSubpixelRendering(bool);
|
|
|
|
private:
|
|
bool static defaultUseSubpixelPositioning();
|
|
void querySystemForRenderStyle(bool useSkiaSubpixelPositioning);
|
|
|
|
sk_sp<SkTypeface> m_typeface;
|
|
CString m_family;
|
|
float m_textSize;
|
|
bool m_syntheticBold;
|
|
bool m_syntheticItalic;
|
|
FontOrientation m_orientation;
|
|
FontRenderStyle m_style;
|
|
mutable RefPtr<HarfBuzzFace> m_harfBuzzFace;
|
|
bool m_isHashTableDeletedValue;
|
|
};
|
|
|
|
} // namespace blink
|
|
|
|
#endif // SKY_ENGINE_PLATFORM_FONTS_FONTPLATFORMDATA_H_
|