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comparison: gfx/thebes/gfxGDIFont.h
gfx/thebes/gfxGDIFont.h
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| 1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef GFX_GDIFONT_H | |
| 7 #define GFX_GDIFONT_H | |
| 8 | |
| 9 #include "mozilla/MemoryReporting.h" | |
| 10 #include "gfxFont.h" | |
| 11 #include "gfxGDIFontList.h" | |
| 12 | |
| 13 #include "nsDataHashtable.h" | |
| 14 #include "nsHashKeys.h" | |
| 15 | |
| 16 #include "cairo.h" | |
| 17 | |
| 18 class gfxGDIFont : public gfxFont | |
| 19 { | |
| 20 public: | |
| 21 gfxGDIFont(GDIFontEntry *aFontEntry, | |
| 22 const gfxFontStyle *aFontStyle, | |
| 23 bool aNeedsBold, | |
| 24 AntialiasOption anAAOption = kAntialiasDefault); | |
| 25 | |
| 26 virtual ~gfxGDIFont(); | |
| 27 | |
| 28 HFONT GetHFONT() { if (!mMetrics) Initialize(); return mFont; } | |
| 29 | |
| 30 gfxFloat GetAdjustedSize() { if (!mMetrics) Initialize(); return mAdjustedSize; } | |
| 31 | |
| 32 cairo_font_face_t *CairoFontFace() { return mFontFace; } | |
| 33 cairo_scaled_font_t *CairoScaledFont() { return mScaledFont; } | |
| 34 | |
| 35 /* overrides for the pure virtual methods in gfxFont */ | |
| 36 virtual const gfxFont::Metrics& GetMetrics(); | |
| 37 | |
| 38 virtual uint32_t GetSpaceGlyph(); | |
| 39 | |
| 40 virtual bool SetupCairoFont(gfxContext *aContext); | |
| 41 | |
| 42 /* override Measure to add padding for antialiasing */ | |
| 43 virtual RunMetrics Measure(gfxTextRun *aTextRun, | |
| 44 uint32_t aStart, uint32_t aEnd, | |
| 45 BoundingBoxType aBoundingBoxType, | |
| 46 gfxContext *aContextForTightBoundingBox, | |
| 47 Spacing *aSpacing); | |
| 48 | |
| 49 /* required for MathML to suppress effects of ClearType "padding" */ | |
| 50 virtual gfxFont* CopyWithAntialiasOption(AntialiasOption anAAOption); | |
| 51 | |
| 52 virtual bool ProvidesGlyphWidths() { return true; } | |
| 53 | |
| 54 // get hinted glyph width in pixels as 16.16 fixed-point value | |
| 55 virtual int32_t GetGlyphWidth(gfxContext *aCtx, uint16_t aGID); | |
| 56 | |
| 57 virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf, | |
| 58 FontCacheSizes* aSizes) const; | |
| 59 virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf, | |
| 60 FontCacheSizes* aSizes) const; | |
| 61 | |
| 62 virtual FontType GetType() const { return FONT_TYPE_GDI; } | |
| 63 | |
| 64 protected: | |
| 65 virtual void CreatePlatformShaper(); | |
| 66 | |
| 67 /* override to check for uniscribe failure and fall back to GDI */ | |
| 68 virtual bool ShapeText(gfxContext *aContext, | |
| 69 const char16_t *aText, | |
| 70 uint32_t aOffset, | |
| 71 uint32_t aLength, | |
| 72 int32_t aScript, | |
| 73 gfxShapedText *aShapedText, | |
| 74 bool aPreferPlatformShaping); | |
| 75 | |
| 76 void Initialize(); // creates metrics and Cairo fonts | |
| 77 | |
| 78 // Fill the given LOGFONT record according to our style, but don't adjust | |
| 79 // the lfItalic field if we're going to use a cairo transform for fake | |
| 80 // italics. | |
| 81 void FillLogFont(LOGFONTW& aLogFont, gfxFloat aSize, bool aUseGDIFakeItalic); | |
| 82 | |
| 83 // mPlatformShaper is used for the GDI shaper, mUniscribeShaper | |
| 84 // for the Uniscribe version if needed | |
| 85 nsAutoPtr<gfxFontShaper> mUniscribeShaper; | |
| 86 | |
| 87 HFONT mFont; | |
| 88 cairo_font_face_t *mFontFace; | |
| 89 | |
| 90 Metrics *mMetrics; | |
| 91 uint32_t mSpaceGlyph; | |
| 92 | |
| 93 bool mNeedsBold; | |
| 94 | |
| 95 // cache of glyph widths in 16.16 fixed-point pixels | |
| 96 nsAutoPtr<nsDataHashtable<nsUint32HashKey,int32_t> > mGlyphWidths; | |
| 97 }; | |
| 98 | |
| 99 #endif /* GFX_GDIFONT_H */ |
