/* -*- 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