michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef GFX_WINDOWSDWRITEFONTS_H
michael@0: #define GFX_WINDOWSDWRITEFONTS_H
michael@0: 
michael@0: #include "mozilla/MemoryReporting.h"
michael@0: #include <dwrite.h>
michael@0: 
michael@0: #include "gfxFont.h"
michael@0: #include "gfxUserFontSet.h"
michael@0: #include "cairo-win32.h"
michael@0: 
michael@0: #include "nsDataHashtable.h"
michael@0: #include "nsHashKeys.h"
michael@0: 
michael@0: /**
michael@0:  * \brief Class representing a font face for a font entry.
michael@0:  */
michael@0: class gfxDWriteFont : public gfxFont 
michael@0: {
michael@0: public:
michael@0:     gfxDWriteFont(gfxFontEntry *aFontEntry,
michael@0:                   const gfxFontStyle *aFontStyle,
michael@0:                   bool aNeedsBold = false,
michael@0:                   AntialiasOption = kAntialiasDefault);
michael@0:     ~gfxDWriteFont();
michael@0: 
michael@0:     virtual gfxFont* CopyWithAntialiasOption(AntialiasOption anAAOption);
michael@0: 
michael@0:     virtual const gfxFont::Metrics& GetMetrics();
michael@0: 
michael@0:     virtual uint32_t GetSpaceGlyph();
michael@0: 
michael@0:     virtual bool SetupCairoFont(gfxContext *aContext);
michael@0: 
michael@0:     virtual bool AllowSubpixelAA() { return mAllowManualShowGlyphs; }
michael@0: 
michael@0:     virtual bool IsValid();
michael@0: 
michael@0:     gfxFloat GetAdjustedSize() {
michael@0:         return mAdjustedSize;
michael@0:     }
michael@0: 
michael@0:     IDWriteFontFace *GetFontFace();
michael@0: 
michael@0:     /* override Measure to add padding for antialiasing */
michael@0:     virtual RunMetrics Measure(gfxTextRun *aTextRun,
michael@0:                                uint32_t aStart, uint32_t aEnd,
michael@0:                                BoundingBoxType aBoundingBoxType,
michael@0:                                gfxContext *aContextForTightBoundingBox,
michael@0:                                Spacing *aSpacing);
michael@0: 
michael@0:     virtual bool ProvidesGlyphWidths();
michael@0: 
michael@0:     virtual int32_t GetGlyphWidth(gfxContext *aCtx, uint16_t aGID);
michael@0: 
michael@0:     virtual mozilla::TemporaryRef<mozilla::gfx::GlyphRenderingOptions> GetGlyphRenderingOptions();
michael@0: 
michael@0:     virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
michael@0:                                         FontCacheSizes* aSizes) const;
michael@0:     virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
michael@0:                                         FontCacheSizes* aSizes) const;
michael@0: 
michael@0:     virtual FontType GetType() const { return FONT_TYPE_DWRITE; }
michael@0: 
michael@0:     virtual mozilla::TemporaryRef<mozilla::gfx::ScaledFont> GetScaledFont(mozilla::gfx::DrawTarget *aTarget);
michael@0: 
michael@0:     virtual cairo_scaled_font_t *GetCairoScaledFont();
michael@0: 
michael@0: protected:
michael@0:     friend class gfxDWriteShaper;
michael@0: 
michael@0:     virtual void CreatePlatformShaper();
michael@0: 
michael@0:     bool GetFakeMetricsForArialBlack(DWRITE_FONT_METRICS *aFontMetrics);
michael@0: 
michael@0:     void ComputeMetrics(AntialiasOption anAAOption);
michael@0: 
michael@0:     bool HasBitmapStrikeForSize(uint32_t aSize);
michael@0: 
michael@0:     cairo_font_face_t *CairoFontFace();
michael@0: 
michael@0:     gfxFloat MeasureGlyphWidth(uint16_t aGlyph);
michael@0: 
michael@0:     DWRITE_MEASURING_MODE GetMeasuringMode();
michael@0:     bool GetForceGDIClassic();
michael@0: 
michael@0:     nsRefPtr<IDWriteFontFace> mFontFace;
michael@0:     cairo_font_face_t *mCairoFontFace;
michael@0: 
michael@0:     gfxFont::Metrics          *mMetrics;
michael@0: 
michael@0:     // cache of glyph widths in 16.16 fixed-point pixels
michael@0:     nsAutoPtr<nsDataHashtable<nsUint32HashKey,int32_t> > mGlyphWidths;
michael@0: 
michael@0:     bool mNeedsOblique;
michael@0:     bool mNeedsBold;
michael@0:     bool mUseSubpixelPositions;
michael@0:     bool mAllowManualShowGlyphs;
michael@0:     bool mAzureScaledFontIsCairo;
michael@0: };
michael@0: 
michael@0: #endif