Merge FontPlatformDataHarfBuzz and FontPlatformData headers

Source/platform/fonts/FontPlatformData.h

 /*
- * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc.
- * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
- * Copyright (C) 2007 Holger Hans Peter Freyther
- * Copyright (C) 2007 Pioneer Research Center USA, Inc.
- * Copyright (C) 2010, 2011 Brent Fulgham <bfulgham@webkit.org>
+ * Copyright (c) 2006, 2007, 2008, Google Inc. All rights reserved.
  *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
  *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
+ *     * 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.
  *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB.  If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
+ * 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.
  */
 
-// FIXME: This is temporary until mac switch to using FontPlatformDataHarfBuzz.h and we merge it with this file.
-#if !OS(MACOSX)
-#include "platform/fonts/harfbuzz/FontPlatformDataHarfBuzz.h"
-
-#else
-
 #ifndef FontPlatformData_h
 #define FontPlatformData_h
 
+#include "SkPaint.h"
 #include "platform/PlatformExport.h"
+#include "platform/SharedBuffer.h"
+#include "platform/fonts/FontDescription.h"
 #include "platform/fonts/FontOrientation.h"
-#include "platform/fonts/FontWidthVariant.h"
+#include "platform/fonts/FontRenderStyle.h"
+#include "platform/fonts/opentype/OpenTypeVerticalData.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(MACOSX)
 OBJC_CLASS NSFont;
 
 typedef struct CGFont* CGFontRef;
 typedef const struct __CTFont* CTFontRef;
 
+#include "platform/fonts/mac/MemoryActivatedFont.h"
 #include <CoreFoundation/CFBase.h>
 #include <objc/objc-auto.h>
 
-#include "wtf/Forward.h"
-#include "wtf/HashTableDeletedValueType.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
-#include "wtf/RetainPtr.h"
-#include "wtf/text/StringImpl.h"
+inline CTFontRef toCTFontRef(NSFont *nsFont) { return reinterpret_cast<CTFontRef>(nsFont); }
+#endif // OS(MACOSX)
 
-#include "platform/fonts/mac/MemoryActivatedFont.h"
-#include "third_party/skia/include/core/SkTypeface.h"
-
-typedef struct CGFont* CGFontRef;
-typedef const struct __CTFont* CTFontRef;
-typedef UInt32 FMFont;
-typedef FMFont ATSUFontID;
-typedef UInt32 ATSFontRef;
+class SkTypeface;
+typedef uint32_t SkFontID;
 
 namespace blink {
 
+class GraphicsContext;
 class HarfBuzzFace;
 
-inline CTFontRef toCTFontRef(NSFont *nsFont) { return reinterpret_cast<CTFontRef>(nsFont); }
-
 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(const FontPlatformData&);
-    FontPlatformData(float size, bool syntheticBold, bool syntheticOblique, FontOrientation = Horizontal, FontWidthVariant = RegularWidth);
-    FontPlatformData(NSFont*, float size, bool syntheticBold = false, bool syntheticOblique = false,
+#if OS(MACOSX)
+    FontPlatformData(float size, bool syntheticBold, bool syntheticItalic, FontOrientation = Horizontal, FontWidthVariant = RegularWidth);
+    FontPlatformData(NSFont*, float size, bool syntheticBold = false, bool syntheticItalic = false,
                      FontOrientation = Horizontal, FontWidthVariant = RegularWidth);
     FontPlatformData(CGFontRef, float size, bool syntheticBold, bool syntheticOblique, FontOrientation, FontWidthVariant);
-
+#else
+    FontPlatformData(float textSize, bool syntheticBold, bool syntheticItalic);
+    FontPlatformData(PassRefPtr<SkTypeface>, const char* name, float textSize, bool syntheticBold, bool syntheticItalic, FontOrientation = Horizontal, bool subpixelTextPosition = defaultUseSubpixelPositioning());
+    FontPlatformData(const FontPlatformData& src, float textSize);
+#endif
     ~FontPlatformData();
 
+#if OS(MACOSX)
     NSFont* font() const { return m_font; }
     void setFont(NSFont*);
 
     CGFontRef cgFont() const { return m_cgFont.get(); }
     CTFontRef ctFont() const;
-    SkTypeface* typeface() const;
 
     bool roundsGlyphAdvances() const;
     bool allowsLigatures() const;
 
-    String fontFamilyName() const;
-    bool isFixedPitch() const;
-    float size() const { return m_size; }
-    void setSize(float size) { m_size = size; }
-    bool syntheticBold() const { return m_syntheticBold; }
-    bool syntheticOblique() const { return m_syntheticOblique; }
     bool isColorBitmapFont() const { return m_isColorBitmapFont; }
     bool isCompositeFontReference() const { return m_isCompositeFontReference; }
 
+    FontWidthVariant widthVariant() const { return m_widthVariant; }
+#endif
+
+    String fontFamilyName() const;
+    float size() const { return m_textSize; }
+    bool isFixedPitch() const;
+    bool syntheticBold() const { return m_syntheticBold; }
+    bool syntheticItalic() const { return m_syntheticItalic; }
+
+    SkTypeface* typeface() const;
+    HarfBuzzFace* harfBuzzFace() const;
+    SkFontID uniqueID() const;
+    unsigned hash() const;
+
     FontOrientation orientation() const { return m_orientation; }
-    FontWidthVariant widthVariant() const { return m_widthVariant; }
+    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 setHinting(SkPaint::Hinting style)
+    {
+        m_style.useAutoHint = 0;
+        m_style.hintStyle = style;
+    }
+#endif
+    bool fontContainsCharacter(UChar32 character);
 
-    void setOrientation(FontOrientation orientation) { m_orientation = orientation; }
-
-    HarfBuzzFace* harfBuzzFace();
-
-    unsigned hash() const
-    {
-        ASSERT(m_font || !m_cgFont);
-        uintptr_t hashCodes[3] = { (uintptr_t)m_font, m_widthVariant, static_cast<uintptr_t>(m_orientation << 2 | m_syntheticBold << 1 | m_syntheticOblique) };
-        return StringHasher::hashMemory<sizeof(hashCodes)>(hashCodes);
-    }
-
-    const FontPlatformData& operator=(const FontPlatformData&);
-
-    bool operator==(const FontPlatformData& other) const
-    {
-        return platformIsEqual(other)
-            && m_size == other.m_size
-            && m_syntheticBold == other.m_syntheticBold
-            && m_syntheticOblique == other.m_syntheticOblique
-            && m_isColorBitmapFont == other.m_isColorBitmapFont
-            && m_isCompositeFontReference == other.m_isCompositeFontReference
-            && m_orientation == other.m_orientation
-            && m_widthVariant == other.m_widthVariant;
-    }
-
-    bool isHashTableDeletedValue() const
-    {
-        return m_font == hashTableDeletedFontValue();
-    }
+#if ENABLE(OPENTYPE_VERTICAL)
+    PassRefPtr<OpenTypeVerticalData> verticalData() const;
+    PassRefPtr<SharedBuffer> openTypeTable(uint32_t table) const;
+#endif
 
 #ifndef NDEBUG
     String description() const;
 #endif
 
+#if !OS(MACOSX)
+    // The returned styles are all actual styles without FontRenderStyle::NoPreference.
+    const FontRenderStyle& fontRenderStyle() const { return m_style; }
+    void setupPaint(SkPaint*, GraphicsContext* = 0) const;
+#endif
+
+#if OS(WIN)
+    int paintTextFlags() const { return m_paintTextFlags; }
+#else
+    static void setHinting(SkPaint::Hinting);
+    static void setAutoHint(bool);
+    static void setUseBitmaps(bool);
+    static void setAntiAlias(bool);
+    static void setSubpixelRendering(bool);
+#endif
+
 private:
-    bool platformIsEqual(const FontPlatformData&) const;
-    void platformDataInit(const FontPlatformData&);
-    const FontPlatformData& platformDataAssign(const FontPlatformData&);
-#if OS(MACOSX)
+#if !OS(MACOSX)
+    bool static defaultUseSubpixelPositioning();
+    void querySystemForRenderStyle(bool useSkiaSubpixelPositioning);
+#else
     // Load various data about the font specified by |nsFont| with the size fontSize into the following output paramters:
     // Note: Callers should always take into account that for the Chromium port, |outNSFont| isn't necessarily the same
     // font as |nsFont|. This because the sandbox may block loading of the original font.
     // * outNSFont - The font that was actually loaded, for the Chromium port this may be different than nsFont.
     // The caller is responsible for calling CFRelease() on this parameter when done with it.
     // * cgFont - CGFontRef representing the input font at the specified point size.
     void loadFont(NSFont*, float fontSize, NSFont*& outNSFont, CGFontRef&);
-    static NSFont* hashTableDeletedFontValue() { return reinterpret_cast<NSFont *>(-1); }
+
+    bool platformIsEqual(const FontPlatformData&) const;
+    void platformDataInit(const FontPlatformData&);
+    const FontPlatformData& platformDataAssign(const FontPlatformData&);
+#endif
+
+    mutable RefPtr<SkTypeface> m_typeface;
+#if !OS(WIN)
+    CString m_family;
 #endif
 
 public:
+    float m_textSize;
     bool m_syntheticBold;
-    bool m_syntheticOblique;
+    bool m_syntheticItalic;
     FontOrientation m_orientation;
-    float m_size;
+#if OS(MACOSX)
+    bool m_isColorBitmapFont;
+    bool m_isCompositeFontReference;
     FontWidthVariant m_widthVariant;
-
+#endif
 private:
+#if OS(MACOSX)
     NSFont* m_font;
     RetainPtr<CGFontRef> m_cgFont;
     mutable RetainPtr<CTFontRef> m_CTFont;
+    RefPtr<MemoryActivatedFont> m_inMemoryFont;
+#else
+    FontRenderStyle m_style;
+#endif
 
-    RefPtr<MemoryActivatedFont> m_inMemoryFont;
-    RefPtr<HarfBuzzFace> m_harfBuzzFace;
-    mutable RefPtr<SkTypeface> m_typeface;
-
-    bool m_isColorBitmapFont;
-    bool m_isCompositeFontReference;
+    mutable RefPtr<HarfBuzzFace> m_harfBuzzFace;
+    bool m_isHashTableDeletedValue;
+#if OS(WIN)
+    int m_paintTextFlags;
+    bool m_useSubpixelPositioning;
+    unsigned m_minSizeForAntiAlias;
+#endif
 };
 
 } // namespace blink
 
-#endif // FontPlatformData_h
-
-#endif
+#endif // ifdef FontPlatformData_h