103 lines
3.8 KiB
C++
103 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_MACFONT_H
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#define GFX_MACFONT_H
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#include "mozilla/MemoryReporting.h"
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#include "gfxFont.h"
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#include "cairo.h"
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#include <ApplicationServices/ApplicationServices.h>
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class MacOSFontEntry;
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class gfxMacFont : public gfxFont
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{
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public:
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gfxMacFont(MacOSFontEntry *aFontEntry, const gfxFontStyle *aFontStyle,
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bool aNeedsBold);
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virtual ~gfxMacFont();
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CGFontRef GetCGFontRef() const { return mCGFont; }
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/* overrides for the pure virtual methods in gfxFont */
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virtual uint32_t GetSpaceGlyph() override {
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return mSpaceGlyph;
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}
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virtual bool SetupCairoFont(DrawTarget* aDrawTarget) override;
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/* override Measure to add padding for antialiasing */
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virtual RunMetrics Measure(const gfxTextRun *aTextRun,
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uint32_t aStart, uint32_t aEnd,
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BoundingBoxType aBoundingBoxType,
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DrawTarget *aDrawTargetForTightBoundingBox,
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Spacing *aSpacing,
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uint16_t aOrientation) override;
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// We need to provide hinted (non-linear) glyph widths if using a font
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// with embedded color bitmaps (Apple Color Emoji), as Core Text renders
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// the glyphs with non-linear scaling at small pixel sizes.
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virtual bool ProvidesGlyphWidths() const override {
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return mFontEntry->HasFontTable(TRUETYPE_TAG('s','b','i','x'));
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}
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virtual int32_t GetGlyphWidth(DrawTarget& aDrawTarget,
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uint16_t aGID) override;
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virtual already_AddRefed<mozilla::gfx::ScaledFont>
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GetScaledFont(mozilla::gfx::DrawTarget *aTarget) override;
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virtual already_AddRefed<mozilla::gfx::GlyphRenderingOptions>
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GetGlyphRenderingOptions(const TextRunDrawParams* aRunParams = nullptr) override;
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virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontCacheSizes* aSizes) const override;
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virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontCacheSizes* aSizes) const override;
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virtual FontType GetType() const override { return FONT_TYPE_MAC; }
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protected:
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virtual const Metrics& GetHorizontalMetrics() override {
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return mMetrics;
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}
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// override to prefer CoreText shaping with fonts that depend on AAT
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virtual bool ShapeText(DrawTarget *aDrawTarget,
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const char16_t *aText,
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uint32_t aOffset,
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uint32_t aLength,
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Script aScript,
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bool aVertical,
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gfxShapedText *aShapedText) override;
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void InitMetrics();
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void InitMetricsFromPlatform();
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// Get width and glyph ID for a character; uses aConvFactor
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// to convert font units as returned by CG to actual dimensions
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gfxFloat GetCharWidth(CFDataRef aCmap, char16_t aUniChar,
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uint32_t *aGlyphID, gfxFloat aConvFactor);
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// a weak reference to the CoreGraphics font: this is owned by the
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// MacOSFontEntry, it is not retained or released by gfxMacFont
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CGFontRef mCGFont;
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// a Core Text font reference, created only if we're using CT to measure
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// glyph widths; otherwise null.
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CTFontRef mCTFont;
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cairo_font_face_t *mFontFace;
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mozilla::UniquePtr<gfxFontShaper> mCoreTextShaper;
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Metrics mMetrics;
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uint32_t mSpaceGlyph;
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};
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#endif /* GFX_MACFONT_H */
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