зеркало из https://github.com/mozilla/gecko-dev.git
114 строки
3.6 KiB
C++
114 строки
3.6 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_WINDOWSDWRITEFONTS_H
|
|
#define GFX_WINDOWSDWRITEFONTS_H
|
|
|
|
#include "mozilla/MemoryReporting.h"
|
|
#include "mozilla/UniquePtr.h"
|
|
#include <dwrite.h>
|
|
|
|
#include "gfxFont.h"
|
|
#include "gfxUserFontSet.h"
|
|
#include "cairo-win32.h"
|
|
|
|
#include "nsDataHashtable.h"
|
|
#include "nsHashKeys.h"
|
|
|
|
#include "mozilla/gfx/UnscaledFontDWrite.h"
|
|
|
|
/**
|
|
* \brief Class representing a font face for a font entry.
|
|
*/
|
|
class gfxDWriteFont : public gfxFont
|
|
{
|
|
public:
|
|
gfxDWriteFont(const RefPtr<mozilla::gfx::UnscaledFontDWrite>& aUnscaledFont,
|
|
gfxFontEntry *aFontEntry,
|
|
const gfxFontStyle *aFontStyle,
|
|
bool aNeedsBold = false,
|
|
AntialiasOption = kAntialiasDefault);
|
|
~gfxDWriteFont();
|
|
|
|
static void UpdateClearTypeUsage();
|
|
|
|
mozilla::UniquePtr<gfxFont>
|
|
CopyWithAntialiasOption(AntialiasOption anAAOption) override;
|
|
|
|
virtual uint32_t GetSpaceGlyph() override;
|
|
|
|
virtual bool SetupCairoFont(DrawTarget* aDrawTarget) override;
|
|
|
|
virtual bool AllowSubpixelAA() override
|
|
{ return mAllowManualShowGlyphs; }
|
|
|
|
bool IsValid() const;
|
|
|
|
IDWriteFontFace *GetFontFace();
|
|
|
|
/* 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;
|
|
|
|
virtual bool ProvidesGlyphWidths() const override;
|
|
|
|
virtual int32_t GetGlyphWidth(DrawTarget& aDrawTarget,
|
|
uint16_t aGID) 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_DWRITE; }
|
|
|
|
virtual already_AddRefed<mozilla::gfx::ScaledFont>
|
|
GetScaledFont(mozilla::gfx::DrawTarget *aTarget) override;
|
|
|
|
virtual cairo_scaled_font_t *GetCairoScaledFont() override;
|
|
|
|
protected:
|
|
virtual const Metrics& GetHorizontalMetrics() override;
|
|
|
|
bool GetFakeMetricsForArialBlack(DWRITE_FONT_METRICS *aFontMetrics);
|
|
|
|
void ComputeMetrics(AntialiasOption anAAOption);
|
|
|
|
bool HasBitmapStrikeForSize(uint32_t aSize);
|
|
|
|
cairo_font_face_t *CairoFontFace();
|
|
|
|
gfxFloat MeasureGlyphWidth(uint16_t aGlyph);
|
|
|
|
DWRITE_MEASURING_MODE GetMeasuringMode();
|
|
bool GetForceGDIClassic();
|
|
|
|
RefPtr<IDWriteFontFace> mFontFace;
|
|
cairo_font_face_t *mCairoFontFace;
|
|
|
|
Metrics *mMetrics;
|
|
|
|
// cache of glyph widths in 16.16 fixed-point pixels
|
|
mozilla::UniquePtr<nsDataHashtable<nsUint32HashKey,int32_t>> mGlyphWidths;
|
|
|
|
uint32_t mSpaceGlyph;
|
|
|
|
bool mNeedsOblique;
|
|
bool mNeedsBold;
|
|
bool mUseSubpixelPositions;
|
|
bool mAllowManualShowGlyphs;
|
|
bool mAzureScaledFontIsCairo;
|
|
static bool mUseClearType;
|
|
};
|
|
|
|
#endif
|