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93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GFX_GDIFONT_H
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#define GFX_GDIFONT_H
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#include "gfxFont.h"
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#include "gfxGDIFontList.h"
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#include "nsDataHashtable.h"
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#include "nsHashKeys.h"
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#include "cairo.h"
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class gfxGDIFont : public gfxFont
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{
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public:
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gfxGDIFont(GDIFontEntry *aFontEntry,
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const gfxFontStyle *aFontStyle,
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bool aNeedsBold,
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AntialiasOption anAAOption = kAntialiasDefault);
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virtual ~gfxGDIFont();
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HFONT GetHFONT() { if (!mMetrics) Initialize(); return mFont; }
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gfxFloat GetAdjustedSize() { if (!mMetrics) Initialize(); return mAdjustedSize; }
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cairo_font_face_t *CairoFontFace() { return mFontFace; }
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cairo_scaled_font_t *CairoScaledFont() { return mScaledFont; }
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/* overrides for the pure virtual methods in gfxFont */
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virtual const gfxFont::Metrics& GetMetrics();
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virtual PRUint32 GetSpaceGlyph();
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virtual bool SetupCairoFont(gfxContext *aContext);
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/* override Measure to add padding for antialiasing */
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virtual RunMetrics Measure(gfxTextRun *aTextRun,
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PRUint32 aStart, PRUint32 aEnd,
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BoundingBoxType aBoundingBoxType,
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gfxContext *aContextForTightBoundingBox,
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Spacing *aSpacing);
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/* required for MathML to suppress effects of ClearType "padding" */
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virtual gfxFont* CopyWithAntialiasOption(AntialiasOption anAAOption);
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virtual bool ProvidesGlyphWidths() { return true; }
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// get hinted glyph width in pixels as 16.16 fixed-point value
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virtual PRInt32 GetGlyphWidth(gfxContext *aCtx, PRUint16 aGID);
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virtual void SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf,
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FontCacheSizes* aSizes) const;
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virtual void SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf,
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FontCacheSizes* aSizes) const;
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virtual FontType GetType() const { return FONT_TYPE_GDI; }
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protected:
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virtual void CreatePlatformShaper();
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/* override to check for uniscribe failure and fall back to GDI */
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virtual bool ShapeWord(gfxContext *aContext,
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gfxShapedWord *aShapedWord,
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const PRUnichar *aString,
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bool aPreferPlatformShaping = false);
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void Initialize(); // creates metrics and Cairo fonts
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void FillLogFont(LOGFONTW& aLogFont, gfxFloat aSize);
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// mPlatformShaper is used for the GDI shaper, mUniscribeShaper
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// for the Uniscribe version if needed
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nsAutoPtr<gfxFontShaper> mUniscribeShaper;
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HFONT mFont;
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cairo_font_face_t *mFontFace;
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Metrics *mMetrics;
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PRUint32 mSpaceGlyph;
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bool mNeedsBold;
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// cache of glyph widths in 16.16 fixed-point pixels
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nsDataHashtable<nsUint32HashKey,PRInt32> mGlyphWidths;
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};
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#endif /* GFX_GDIFONT_H */
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