text: /*
   * 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 FontPlatformData_h
  #define FontPlatformData_h
  
  #include "SkPaint.h"
  #include "SkTypeface.h"
  #include "platform/PlatformExport.h"
  #include "platform/SharedBuffer.h"
  #include "platform/fonts/FontDescription.h"
  #include "platform/fonts/FontOrientation.h"
  #include "platform/fonts/SmallCapsIterator.h"
  #include "platform/fonts/opentype/OpenTypeVerticalData.h"
  #include "third_party/skia/include/core/SkRefCnt.h"
  #include "wtf/Allocator.h"
  #include "wtf/Forward.h"
  #include "wtf/HashTableDeletedValueType.h"
  #include "wtf/RefPtr.h"
  #include "wtf/text/CString.h"
  #include "wtf/text/StringImpl.h"
  
  #if OS(LINUX) || OS(ANDROID)
  #include "platform/fonts/linux/FontRenderStyle.h"
  #endif  // OS(LINUX) || OS(ANDROID)
  
  #if OS(MACOSX)
  OBJC_CLASS NSFont;
  
  typedef struct CGFont* CGFontRef;
  typedef const struct __CTFont* CTFontRef;
  
  #include <objc/objc-auto.h>
  
  inline CTFontRef toCTFontRef(NSFont* nsFont) {
    return reinterpret_cast<CTFontRef>(nsFont);
  }
  inline NSFont* toNSFont(CTFontRef ctFontRef) {
    return const_cast<NSFont*>(reinterpret_cast<const NSFont*>(ctFontRef));
  }
  #endif  // OS(MACOSX)
  
  class SkTypeface;
  typedef uint32_t SkFontID;
  
  namespace blink {
  
  class Font;
  class GraphicsContext;
  class HarfBuzzFace;
  
  class PLATFORM_EXPORT FontPlatformData {
    USING_FAST_MALLOC(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(const FontPlatformData&);
    FontPlatformData(float size,
                     bool syntheticBold,
                     bool syntheticItalic,
                     FontOrientation = FontOrientation::Horizontal);
    FontPlatformData(const FontPlatformData& src, float textSize);
  #if OS(MACOSX)
    FontPlatformData(NSFont*,
                     float size,
                     bool syntheticBold = false,
                     bool syntheticItalic = false,
                     FontOrientation = FontOrientation::Horizontal);
  #endif
    FontPlatformData(sk_sp<SkTypeface>,
                     const char* name,
                     float textSize,
                     bool syntheticBold,
                     bool syntheticItalic,
                     FontOrientation = FontOrientation::Horizontal);
    ~FontPlatformData();
  
  #if OS(MACOSX)
    CTFontRef ctFont() const;
    CGFontRef cgFont() const;
  #endif
  
    String fontFamilyName() const;
    float size() const { return m_textSize; }
    bool syntheticBold() const { return m_syntheticBold; }
    bool syntheticItalic() const { return m_syntheticItalic; }
  
    SkTypeface* typeface() const;
    HarfBuzzFace* harfBuzzFace() const;
    bool hasSpaceInLigaturesOrKerning(TypesettingFeatures) const;
    SkFontID uniqueID() const;
    unsigned hash() const;
  
    FontOrientation orientation() const { return m_orientation; }
    bool isVerticalAnyUpright() const {
      return blink::isVerticalAnyUpright(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;
    const FontPlatformData& operator=(const FontPlatformData&);
  
    bool isHashTableDeletedValue() const { return m_isHashTableDeletedValue; }
  #if OS(WIN)
    void setMinSizeForAntiAlias(unsigned size) { m_minSizeForAntiAlias = size; }
    unsigned minSizeForAntiAlias() const { return m_minSizeForAntiAlias; }
    void setMinSizeForSubpixel(float size) { m_minSizeForSubpixel = size; }
    float minSizeForSubpixel() const { return m_minSizeForSubpixel; }
  #endif
    bool fontContainsCharacter(UChar32 character);
  
    PassRefPtr<OpenTypeVerticalData> verticalData() const;
    PassRefPtr<SharedBuffer> openTypeTable(SkFontTableTag) const;
  
  #if OS(LINUX) || OS(ANDROID)
    // The returned styles are all actual styles without
    // FontRenderStyle::NoPreference.
    const FontRenderStyle& getFontRenderStyle() const { return m_style; }
  #endif
    void setupPaint(SkPaint*, float deviceScaleFactor = 1, const Font* = 0) const;
  
  #if OS(WIN)
    int paintTextFlags() const { return m_paintTextFlags; }
  #endif
  
   private:
  #if OS(WIN)
    void querySystemForRenderStyle();
  #endif
  
    sk_sp<SkTypeface> m_typeface;
  #if !OS(WIN)
    CString m_family;
  #endif
  
   public:
    float m_textSize;
    bool m_syntheticBold;
    bool m_syntheticItalic;
    FontOrientation m_orientation;
  
   private:
  #if OS(LINUX) || OS(ANDROID)
    FontRenderStyle m_style;
  #endif
  
    mutable RefPtr<HarfBuzzFace> m_harfBuzzFace;
    bool m_isHashTableDeletedValue;
  #if OS(WIN)
    int m_paintTextFlags;
    unsigned m_minSizeForAntiAlias;
    float m_minSizeForSubpixel;
  #endif
  };
  
  }  // namespace blink
  
  #endif  // ifdef FontPlatformData_h
  