/* -*- 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_MACFONT_H #define GFX_MACFONT_H #include "mozilla/MemoryReporting.h" #include "gfxFont.h" #include "cairo.h" #include <ApplicationServices/ApplicationServices.h> class MacOSFontEntry; class gfxMacFont : public gfxFont { public: gfxMacFont(MacOSFontEntry *aFontEntry, const gfxFontStyle *aFontStyle, bool aNeedsBold); virtual ~gfxMacFont(); CGFontRef GetCGFontRef() const { return mCGFont; } /* overrides for the pure virtual methods in gfxFont */ virtual uint32_t GetSpaceGlyph() override { return mSpaceGlyph; } 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; // We need to provide hinted (non-linear) glyph widths if using a font // with embedded color bitmaps (Apple Color Emoji), as Core Text renders // the glyphs with non-linear scaling at small pixel sizes. virtual bool ProvidesGlyphWidths() const override { return mFontEntry->HasFontTable(TRUETYPE_TAG('s','b','i','x')); } virtual int32_t GetGlyphWidth(DrawTarget& aDrawTarget, uint16_t aGID) override; virtual already_AddRefed<mozilla::gfx::ScaledFont> GetScaledFont(mozilla::gfx::DrawTarget *aTarget) override; virtual already_AddRefed<mozilla::gfx::GlyphRenderingOptions> GetGlyphRenderingOptions(const TextRunDrawParams* aRunParams = nullptr) override; virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf, FontCacheSizes* aSizes) const override; virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf, FontCacheSizes* aSizes) const override; virtual FontType GetType() const override { return FONT_TYPE_MAC; } protected: virtual const Metrics& GetHorizontalMetrics() override { return mMetrics; } // override to prefer CoreText shaping with fonts that depend on AAT virtual bool ShapeText(DrawTarget *aDrawTarget, const char16_t *aText, uint32_t aOffset, uint32_t aLength, Script aScript, bool aVertical, gfxShapedText *aShapedText) override; void InitMetrics(); void InitMetricsFromPlatform(); // Get width and glyph ID for a character; uses aConvFactor // to convert font units as returned by CG to actual dimensions gfxFloat GetCharWidth(CFDataRef aCmap, char16_t aUniChar, uint32_t *aGlyphID, gfxFloat aConvFactor); // a weak reference to the CoreGraphics font: this is owned by the // MacOSFontEntry, it is not retained or released by gfxMacFont CGFontRef mCGFont; // a Core Text font reference, created only if we're using CT to measure // glyph widths; otherwise null. CTFontRef mCTFont; cairo_font_face_t *mFontFace; mozilla::UniquePtr<gfxFontShaper> mCoreTextShaper; Metrics mMetrics; uint32_t mSpaceGlyph; }; #endif /* GFX_MACFONT_H */