1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/thebes/gfxGDIFont.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,99 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef GFX_GDIFONT_H
1.10 +#define GFX_GDIFONT_H
1.11 +
1.12 +#include "mozilla/MemoryReporting.h"
1.13 +#include "gfxFont.h"
1.14 +#include "gfxGDIFontList.h"
1.15 +
1.16 +#include "nsDataHashtable.h"
1.17 +#include "nsHashKeys.h"
1.18 +
1.19 +#include "cairo.h"
1.20 +
1.21 +class gfxGDIFont : public gfxFont
1.22 +{
1.23 +public:
1.24 + gfxGDIFont(GDIFontEntry *aFontEntry,
1.25 + const gfxFontStyle *aFontStyle,
1.26 + bool aNeedsBold,
1.27 + AntialiasOption anAAOption = kAntialiasDefault);
1.28 +
1.29 + virtual ~gfxGDIFont();
1.30 +
1.31 + HFONT GetHFONT() { if (!mMetrics) Initialize(); return mFont; }
1.32 +
1.33 + gfxFloat GetAdjustedSize() { if (!mMetrics) Initialize(); return mAdjustedSize; }
1.34 +
1.35 + cairo_font_face_t *CairoFontFace() { return mFontFace; }
1.36 + cairo_scaled_font_t *CairoScaledFont() { return mScaledFont; }
1.37 +
1.38 + /* overrides for the pure virtual methods in gfxFont */
1.39 + virtual const gfxFont::Metrics& GetMetrics();
1.40 +
1.41 + virtual uint32_t GetSpaceGlyph();
1.42 +
1.43 + virtual bool SetupCairoFont(gfxContext *aContext);
1.44 +
1.45 + /* override Measure to add padding for antialiasing */
1.46 + virtual RunMetrics Measure(gfxTextRun *aTextRun,
1.47 + uint32_t aStart, uint32_t aEnd,
1.48 + BoundingBoxType aBoundingBoxType,
1.49 + gfxContext *aContextForTightBoundingBox,
1.50 + Spacing *aSpacing);
1.51 +
1.52 + /* required for MathML to suppress effects of ClearType "padding" */
1.53 + virtual gfxFont* CopyWithAntialiasOption(AntialiasOption anAAOption);
1.54 +
1.55 + virtual bool ProvidesGlyphWidths() { return true; }
1.56 +
1.57 + // get hinted glyph width in pixels as 16.16 fixed-point value
1.58 + virtual int32_t GetGlyphWidth(gfxContext *aCtx, uint16_t aGID);
1.59 +
1.60 + virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
1.61 + FontCacheSizes* aSizes) const;
1.62 + virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
1.63 + FontCacheSizes* aSizes) const;
1.64 +
1.65 + virtual FontType GetType() const { return FONT_TYPE_GDI; }
1.66 +
1.67 +protected:
1.68 + virtual void CreatePlatformShaper();
1.69 +
1.70 + /* override to check for uniscribe failure and fall back to GDI */
1.71 + virtual bool ShapeText(gfxContext *aContext,
1.72 + const char16_t *aText,
1.73 + uint32_t aOffset,
1.74 + uint32_t aLength,
1.75 + int32_t aScript,
1.76 + gfxShapedText *aShapedText,
1.77 + bool aPreferPlatformShaping);
1.78 +
1.79 + void Initialize(); // creates metrics and Cairo fonts
1.80 +
1.81 + // Fill the given LOGFONT record according to our style, but don't adjust
1.82 + // the lfItalic field if we're going to use a cairo transform for fake
1.83 + // italics.
1.84 + void FillLogFont(LOGFONTW& aLogFont, gfxFloat aSize, bool aUseGDIFakeItalic);
1.85 +
1.86 + // mPlatformShaper is used for the GDI shaper, mUniscribeShaper
1.87 + // for the Uniscribe version if needed
1.88 + nsAutoPtr<gfxFontShaper> mUniscribeShaper;
1.89 +
1.90 + HFONT mFont;
1.91 + cairo_font_face_t *mFontFace;
1.92 +
1.93 + Metrics *mMetrics;
1.94 + uint32_t mSpaceGlyph;
1.95 +
1.96 + bool mNeedsBold;
1.97 +
1.98 + // cache of glyph widths in 16.16 fixed-point pixels
1.99 + nsAutoPtr<nsDataHashtable<nsUint32HashKey,int32_t> > mGlyphWidths;
1.100 +};
1.101 +
1.102 +#endif /* GFX_GDIFONT_H */
