gecko/gfx/thebes/gfxDWriteFonts.h

109 lines
3.4 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 <dwrite.h>
#include "gfxFont.h"
#include "gfxUserFontSet.h"
#include "cairo-win32.h"
#include "nsDataHashtable.h"
#include "nsHashKeys.h"
/**
* \brief Class representing a font face for a font entry.
*/
class gfxDWriteFont : public gfxFont
{
public:
gfxDWriteFont(gfxFontEntry *aFontEntry,
const gfxFontStyle *aFontStyle,
bool aNeedsBold = false,
AntialiasOption = kAntialiasDefault);
~gfxDWriteFont();
virtual gfxFont*
CopyWithAntialiasOption(AntialiasOption anAAOption) MOZ_OVERRIDE;
virtual uint32_t GetSpaceGlyph() MOZ_OVERRIDE;
virtual bool SetupCairoFont(gfxContext *aContext) MOZ_OVERRIDE;
virtual bool AllowSubpixelAA() MOZ_OVERRIDE
{ return mAllowManualShowGlyphs; }
bool IsValid() const;
virtual gfxFloat GetAdjustedSize() const MOZ_OVERRIDE {
return mAdjustedSize;
}
IDWriteFontFace *GetFontFace();
/* override Measure to add padding for antialiasing */
virtual RunMetrics Measure(gfxTextRun *aTextRun,
uint32_t aStart, uint32_t aEnd,
BoundingBoxType aBoundingBoxType,
gfxContext *aContextForTightBoundingBox,
Spacing *aSpacing,
uint16_t aOrientation) MOZ_OVERRIDE;
virtual bool ProvidesGlyphWidths() const MOZ_OVERRIDE;
virtual int32_t GetGlyphWidth(DrawTarget& aDrawTarget,
uint16_t aGID) MOZ_OVERRIDE;
virtual mozilla::TemporaryRef<mozilla::gfx::GlyphRenderingOptions>
GetGlyphRenderingOptions(const TextRunDrawParams* aRunParams = nullptr) MOZ_OVERRIDE;
virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
FontCacheSizes* aSizes) const;
virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
FontCacheSizes* aSizes) const;
virtual FontType GetType() const { return FONT_TYPE_DWRITE; }
virtual mozilla::TemporaryRef<mozilla::gfx::ScaledFont>
GetScaledFont(mozilla::gfx::DrawTarget *aTarget) MOZ_OVERRIDE;
virtual cairo_scaled_font_t *GetCairoScaledFont() MOZ_OVERRIDE;
protected:
virtual const Metrics& GetHorizontalMetrics() MOZ_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();
nsRefPtr<IDWriteFontFace> mFontFace;
cairo_font_face_t *mCairoFontFace;
Metrics *mMetrics;
// cache of glyph widths in 16.16 fixed-point pixels
nsAutoPtr<nsDataHashtable<nsUint32HashKey,int32_t> > mGlyphWidths;
bool mNeedsOblique;
bool mNeedsBold;
bool mUseSubpixelPositions;
bool mAllowManualShowGlyphs;
bool mAzureScaledFontIsCairo;
};
#endif