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| 1 /* | |
| 2 * Copyright (c) 2006, 2007, 2008, Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #ifndef FontPlatformDataHarfBuzz_h | |
| 32 #define FontPlatformDataHarfBuzz_h | |
| 33 | |
| 34 #include "SkPaint.h" | |
| 35 #include "platform/SharedBuffer.h" | |
| 36 #include "core/platform/graphics/opentype/OpenTypeVerticalData.h" | |
| 37 #include "platform/fonts/FontDescription.h" | |
| 38 #include "platform/fonts/FontOrientation.h" | |
| 39 #include "platform/fonts/FontRenderStyle.h" | |
| 40 #include "wtf/Forward.h" | |
| 41 #include "wtf/HashTableDeletedValueType.h" | |
| 42 #include "wtf/RefPtr.h" | |
| 43 #include "wtf/text/CString.h" | |
| 44 #include "wtf/text/StringImpl.h" | |
| 45 | |
| 46 class SkTypeface; | |
| 47 typedef uint32_t SkFontID; | |
| 48 | |
| 49 namespace WebCore { | |
| 50 | |
| 51 class GraphicsContext; | |
| 52 class HarfBuzzFace; | |
| 53 | |
| 54 // ----------------------------------------------------------------------------- | |
| 55 // FontPlatformData is the handle which WebKit has on a specific face. A face | |
| 56 // is the tuple of (font, size, ...etc). Here we are just wrapping a Skia | |
| 57 // SkTypeface pointer and dealing with the reference counting etc. | |
| 58 // ----------------------------------------------------------------------------- | |
| 59 class FontPlatformData { | |
| 60 public: | |
| 61 // Used for deleted values in the font cache's hash tables. The hash table | |
| 62 // will create us with this structure, and it will compare other values | |
| 63 // to this "Deleted" one. It expects the Deleted one to be differentiable | |
| 64 // from the 0 one (created with the empty constructor), so we can't just | |
| 65 // set everything to 0. | |
| 66 FontPlatformData(WTF::HashTableDeletedValueType); | |
| 67 FontPlatformData(); | |
| 68 FontPlatformData(float textSize, bool fakeBold, bool fakeItalic); | |
| 69 FontPlatformData(const FontPlatformData&); | |
| 70 FontPlatformData(PassRefPtr<SkTypeface>, const char* name, float textSize, b
ool fakeBold, bool fakeItalic, FontOrientation = Horizontal, bool subpixelTextPo
sition = FontDescription::subpixelPositioning()); | |
| 71 FontPlatformData(const FontPlatformData& src, float textSize); | |
| 72 ~FontPlatformData(); | |
| 73 | |
| 74 String fontFamilyName() const; | |
| 75 | |
| 76 // ------------------------------------------------------------------------- | |
| 77 // Return true iff this font is monospaced (i.e. every glyph has an equal x | |
| 78 // advance) | |
| 79 // ------------------------------------------------------------------------- | |
| 80 bool isFixedPitch() const; | |
| 81 | |
| 82 // ------------------------------------------------------------------------- | |
| 83 // Setup a Skia painting context to use this font. | |
| 84 // ------------------------------------------------------------------------- | |
| 85 void setupPaint(SkPaint*, GraphicsContext* = 0) const; | |
| 86 | |
| 87 // ------------------------------------------------------------------------- | |
| 88 // Return Skia's unique id for this font. This encodes both the style and | |
| 89 // the font's file name so refers to a single face. | |
| 90 // ------------------------------------------------------------------------- | |
| 91 SkFontID uniqueID() const; | |
| 92 SkTypeface* typeface() const { return m_typeface.get(); } | |
| 93 | |
| 94 unsigned hash() const; | |
| 95 float size() const { return m_textSize; } | |
| 96 int emSizeInFontUnits() const; | |
| 97 | |
| 98 FontOrientation orientation() const { return m_orientation; } | |
| 99 void setOrientation(FontOrientation orientation) { m_orientation = orientati
on; } | |
| 100 void setFakeBold(bool fakeBold) { m_fakeBold = fakeBold; } | |
| 101 void setFakeItalic(bool fakeItalic) { m_fakeItalic = fakeItalic; } | |
| 102 bool operator==(const FontPlatformData&) const; | |
| 103 FontPlatformData& operator=(const FontPlatformData&); | |
| 104 bool isHashTableDeletedValue() const { return m_isHashTableDeletedValue; } | |
| 105 | |
| 106 #if ENABLE(OPENTYPE_VERTICAL) | |
| 107 PassRefPtr<OpenTypeVerticalData> verticalData() const; | |
| 108 PassRefPtr<SharedBuffer> openTypeTable(uint32_t table) const; | |
| 109 #endif | |
| 110 | |
| 111 #ifndef NDEBUG | |
| 112 String description() const; | |
| 113 #endif | |
| 114 | |
| 115 HarfBuzzFace* harfBuzzFace() const; | |
| 116 | |
| 117 // The returned styles are all actual styles without FontRenderStyle::NoPref
erence. | |
| 118 const FontRenderStyle& fontRenderStyle() const { return m_style; } | |
| 119 | |
| 120 // ------------------------------------------------------------------------- | |
| 121 // Global font preferences... | |
| 122 | |
| 123 static void setHinting(SkPaint::Hinting); | |
| 124 static void setAutoHint(bool); | |
| 125 static void setUseBitmaps(bool); | |
| 126 static void setAntiAlias(bool); | |
| 127 static void setSubpixelRendering(bool); | |
| 128 | |
| 129 private: | |
| 130 void getRenderStyleForStrike(const char*, int); | |
| 131 void querySystemForRenderStyle(bool useSkiaSubpixelPositioning); | |
| 132 | |
| 133 RefPtr<SkTypeface> m_typeface; | |
| 134 CString m_family; | |
| 135 float m_textSize; | |
| 136 mutable int m_emSizeInFontUnits; | |
| 137 bool m_fakeBold; | |
| 138 bool m_fakeItalic; | |
| 139 FontOrientation m_orientation; | |
| 140 FontRenderStyle m_style; | |
| 141 mutable RefPtr<HarfBuzzFace> m_harfBuzzFace; | |
| 142 bool m_isHashTableDeletedValue; | |
| 143 }; | |
| 144 | |
| 145 } // namespace WebCore | |
| 146 | |
| 147 #endif // ifdef FontPlatformDataHarfBuzz_h | |
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Chromium Code Reviews
Issue 99103006:
Moving GraphicsContext and dependencies from core to platform. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk