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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_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"
/**
* \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) 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;
};
#endif
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