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/* -*- 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 */
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