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_GDIFONT_H
michael@0: #define GFX_GDIFONT_H
michael@0: 
michael@0: #include "mozilla/MemoryReporting.h"
michael@0: #include "gfxFont.h"
michael@0: #include "gfxGDIFontList.h"
michael@0: 
michael@0: #include "nsDataHashtable.h"
michael@0: #include "nsHashKeys.h"
michael@0: 
michael@0: #include "cairo.h"
michael@0: 
michael@0: class gfxGDIFont : public gfxFont
michael@0: {
michael@0: public:
michael@0:     gfxGDIFont(GDIFontEntry *aFontEntry,
michael@0:                const gfxFontStyle *aFontStyle,
michael@0:                bool aNeedsBold,
michael@0:                AntialiasOption anAAOption = kAntialiasDefault);
michael@0: 
michael@0:     virtual ~gfxGDIFont();
michael@0: 
michael@0:     HFONT GetHFONT() { if (!mMetrics) Initialize(); return mFont; }
michael@0: 
michael@0:     gfxFloat GetAdjustedSize() { if (!mMetrics) Initialize(); return mAdjustedSize; }
michael@0: 
michael@0:     cairo_font_face_t   *CairoFontFace() { return mFontFace; }
michael@0:     cairo_scaled_font_t *CairoScaledFont() { return mScaledFont; }
michael@0: 
michael@0:     /* overrides for the pure virtual methods in gfxFont */
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:     /* 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:     /* required for MathML to suppress effects of ClearType "padding" */
michael@0:     virtual gfxFont* CopyWithAntialiasOption(AntialiasOption anAAOption);
michael@0: 
michael@0:     virtual bool ProvidesGlyphWidths() { return true; }
michael@0: 
michael@0:     // get hinted glyph width in pixels as 16.16 fixed-point value
michael@0:     virtual int32_t GetGlyphWidth(gfxContext *aCtx, uint16_t aGID);
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_GDI; }
michael@0: 
michael@0: protected:
michael@0:     virtual void CreatePlatformShaper();
michael@0: 
michael@0:     /* override to check for uniscribe failure and fall back to GDI */
michael@0:     virtual bool ShapeText(gfxContext      *aContext,
michael@0:                            const char16_t *aText,
michael@0:                            uint32_t         aOffset,
michael@0:                            uint32_t         aLength,
michael@0:                            int32_t          aScript,
michael@0:                            gfxShapedText   *aShapedText,
michael@0:                            bool             aPreferPlatformShaping);
michael@0: 
michael@0:     void Initialize(); // creates metrics and Cairo fonts
michael@0: 
michael@0:     // Fill the given LOGFONT record according to our style, but don't adjust
michael@0:     // the lfItalic field if we're going to use a cairo transform for fake
michael@0:     // italics.
michael@0:     void FillLogFont(LOGFONTW& aLogFont, gfxFloat aSize, bool aUseGDIFakeItalic);
michael@0: 
michael@0:     // mPlatformShaper is used for the GDI shaper, mUniscribeShaper
michael@0:     // for the Uniscribe version if needed
michael@0:     nsAutoPtr<gfxFontShaper>   mUniscribeShaper;
michael@0: 
michael@0:     HFONT                 mFont;
michael@0:     cairo_font_face_t    *mFontFace;
michael@0: 
michael@0:     Metrics              *mMetrics;
michael@0:     uint32_t              mSpaceGlyph;
michael@0: 
michael@0:     bool                  mNeedsBold;
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: 
michael@0: #endif /* GFX_GDIFONT_H */