зеркало из https://github.com/mozilla/gecko-dev.git
117 строки
4.3 KiB
C++
117 строки
4.3 KiB
C++
/* -*- 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>
|
|
|
|
#include "mozilla/gfx/UnscaledFontMac.h"
|
|
|
|
class MacOSFontEntry;
|
|
|
|
class gfxMacFont : public gfxFont
|
|
{
|
|
public:
|
|
gfxMacFont(const RefPtr<mozilla::gfx::UnscaledFontMac>& aUnscaledFont,
|
|
MacOSFontEntry *aFontEntry, const gfxFontStyle *aFontStyle,
|
|
bool aNeedsBold);
|
|
|
|
virtual ~gfxMacFont();
|
|
|
|
CGFontRef GetCGFontRef() const { return mCGFont; }
|
|
|
|
/* overrides for the pure virtual methods in gfxFont */
|
|
uint32_t GetSpaceGlyph() override {
|
|
return mSpaceGlyph;
|
|
}
|
|
|
|
bool SetupCairoFont(DrawTarget* aDrawTarget) override;
|
|
|
|
/* override Measure to add padding for antialiasing */
|
|
RunMetrics Measure(const gfxTextRun *aTextRun,
|
|
uint32_t aStart, uint32_t aEnd,
|
|
BoundingBoxType aBoundingBoxType,
|
|
DrawTarget *aDrawTargetForTightBoundingBox,
|
|
Spacing *aSpacing,
|
|
mozilla::gfx::ShapedTextFlags 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.
|
|
bool ProvidesGlyphWidths() const override {
|
|
return mVariationFont ||
|
|
mFontEntry->HasFontTable(TRUETYPE_TAG('s','b','i','x'));
|
|
}
|
|
|
|
int32_t GetGlyphWidth(DrawTarget& aDrawTarget,
|
|
uint16_t aGID) override;
|
|
|
|
already_AddRefed<mozilla::gfx::ScaledFont>
|
|
GetScaledFont(mozilla::gfx::DrawTarget *aTarget) override;
|
|
|
|
already_AddRefed<mozilla::gfx::GlyphRenderingOptions>
|
|
GetGlyphRenderingOptions(const TextRunDrawParams* aRunParams = nullptr) override;
|
|
|
|
void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
|
|
FontCacheSizes* aSizes) const override;
|
|
void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
|
|
FontCacheSizes* aSizes) const override;
|
|
|
|
FontType GetType() const override { return FONT_TYPE_MAC; }
|
|
|
|
// Helper to create a CTFont from a CGFont, with optional font descriptor
|
|
// (for features), and copying any variations that were set on the CGFont.
|
|
// This is public so that gfxCoreTextShaper can also use it.
|
|
static CTFontRef
|
|
CreateCTFontFromCGFontWithVariations(CGFontRef aCGFont,
|
|
CGFloat aSize,
|
|
CTFontDescriptorRef aFontDesc = nullptr);
|
|
|
|
protected:
|
|
const Metrics& GetHorizontalMetrics() override {
|
|
return mMetrics;
|
|
}
|
|
|
|
// override to prefer CoreText shaping with fonts that depend on AAT
|
|
bool ShapeText(DrawTarget *aDrawTarget,
|
|
const char16_t *aText,
|
|
uint32_t aOffset,
|
|
uint32_t aLength,
|
|
Script aScript,
|
|
bool aVertical,
|
|
RoundingFlags aRounding,
|
|
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 strong reference to the CoreGraphics font
|
|
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;
|
|
|
|
bool mVariationFont; // true if font has OpenType variations
|
|
};
|
|
|
|
#endif /* GFX_MACFONT_H */
|