/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef GFX_GDIFONT_H #define GFX_GDIFONT_H #include "mozilla/MemoryReporting.h" #include "gfxFont.h" #include "gfxGDIFontList.h" #include "nsDataHashtable.h" #include "nsHashKeys.h" #include "cairo.h" #include "usp10.h" class gfxGDIFont : public gfxFont { public: gfxGDIFont(GDIFontEntry *aFontEntry, const gfxFontStyle *aFontStyle, bool aNeedsBold, AntialiasOption anAAOption = kAntialiasDefault); virtual ~gfxGDIFont(); HFONT GetHFONT() { return mFont; } cairo_font_face_t *CairoFontFace() { return mFontFace; } cairo_scaled_font_t *CairoScaledFont() { return mScaledFont; } /* overrides for the pure virtual methods in gfxFont */ virtual uint32_t GetSpaceGlyph() override; virtual bool SetupCairoFont(DrawTarget* aDrawTarget) override; /* override Measure to add padding for antialiasing */ virtual RunMetrics Measure(const gfxTextRun *aTextRun, uint32_t aStart, uint32_t aEnd, BoundingBoxType aBoundingBoxType, DrawTarget *aDrawTargetForTightBoundingBox, Spacing *aSpacing, uint16_t aOrientation) override; /* required for MathML to suppress effects of ClearType "padding" */ virtual gfxFont* CopyWithAntialiasOption(AntialiasOption anAAOption) override; // If the font has a cmap table, we handle it purely with harfbuzz; // but if not (e.g. .fon fonts), we'll use a GDI callback to get glyphs. virtual bool ProvidesGetGlyph() const override { return !mFontEntry->HasCmapTable(); } virtual uint32_t GetGlyph(uint32_t aUnicode, uint32_t aVarSelector) override; virtual bool ProvidesGlyphWidths() const override { return true; } // get hinted glyph width in pixels as 16.16 fixed-point value virtual int32_t GetGlyphWidth(DrawTarget& aDrawTarget, uint16_t aGID) override; virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf, FontCacheSizes* aSizes) const; virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf, FontCacheSizes* aSizes) const; virtual FontType GetType() const override { return FONT_TYPE_GDI; } protected: virtual const Metrics& GetHorizontalMetrics() override; /* override to ensure the cairo font is set up properly */ virtual bool ShapeText(DrawTarget *aDrawTarget, const char16_t *aText, uint32_t aOffset, uint32_t aLength, Script aScript, bool aVertical, gfxShapedText *aShapedText) override; void Initialize(); // creates metrics and Cairo fonts // Fill the given LOGFONT record according to our style, but don't adjust // the lfItalic field if we're going to use a cairo transform for fake // italics. void FillLogFont(LOGFONTW& aLogFont, gfxFloat aSize, bool aUseGDIFakeItalic); HFONT mFont; cairo_font_face_t *mFontFace; Metrics *mMetrics; uint32_t mSpaceGlyph; bool mNeedsBold; // cache of glyph IDs (used for non-sfnt fonts only) mozilla::UniquePtr<nsDataHashtable<nsUint32HashKey,uint32_t> > mGlyphIDs; SCRIPT_CACHE mScriptCache; // cache of glyph widths in 16.16 fixed-point pixels mozilla::UniquePtr<nsDataHashtable<nsUint32HashKey,int32_t> > mGlyphWidths; }; #endif /* GFX_GDIFONT_H */