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/* -*- 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_GDIFONT_H
#define GFX_GDIFONT_H
#include "mozilla/MemoryReporting.h"
#include "gfxFont.h"
#include "gfxGDIFontList.h"
#include "nsDataHashtable.h"
#include "nsHashKeys.h"
#include "cairo.h"
#include "usp10.h"
class gfxGDIFont : public gfxFont
{
public:
gfxGDIFont(GDIFontEntry *aFontEntry,
const gfxFontStyle *aFontStyle,
bool aNeedsBold,
AntialiasOption anAAOption = kAntialiasDefault);
virtual ~gfxGDIFont();
HFONT GetHFONT() { return mFont; }
cairo_font_face_t *CairoFontFace() { return mFontFace; }
cairo_scaled_font_t *CairoScaledFont() { return mScaledFont; }
/* overrides for the pure virtual methods in gfxFont */
virtual uint32_t GetSpaceGlyph() override;
virtual bool SetupCairoFont(DrawTarget* aDrawTarget) override;
/* 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;
/* required for MathML to suppress effects of ClearType "padding" */
virtual gfxFont*
CopyWithAntialiasOption(AntialiasOption anAAOption) override;
// If the font has a cmap table, we handle it purely with harfbuzz;
// but if not (e.g. .fon fonts), we'll use a GDI callback to get glyphs.
virtual bool ProvidesGetGlyph() const override {
return !mFontEntry->HasCmapTable();
}
virtual uint32_t GetGlyph(uint32_t aUnicode,
uint32_t aVarSelector) override;
virtual bool ProvidesGlyphWidths() const override { return true; }
// get hinted glyph width in pixels as 16.16 fixed-point value
virtual int32_t GetGlyphWidth(DrawTarget& aDrawTarget,
uint16_t aGID) override;
virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
FontCacheSizes* aSizes) const;
virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
FontCacheSizes* aSizes) const;
virtual FontType GetType() const override { return FONT_TYPE_GDI; }
protected:
virtual const Metrics& GetHorizontalMetrics() override;
/* override to ensure the cairo font is set up properly */
virtual bool ShapeText(DrawTarget *aDrawTarget,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
Script aScript,
bool aVertical,
gfxShapedText *aShapedText) override;
void Initialize(); // creates metrics and Cairo fonts
// Fill the given LOGFONT record according to our style, but don't adjust
// the lfItalic field if we're going to use a cairo transform for fake
// italics.
void FillLogFont(LOGFONTW& aLogFont, gfxFloat aSize, bool aUseGDIFakeItalic);
HFONT mFont;
cairo_font_face_t *mFontFace;
Metrics *mMetrics;
uint32_t mSpaceGlyph;
bool mNeedsBold;
// cache of glyph IDs (used for non-sfnt fonts only)
mozilla::UniquePtr<nsDataHashtable<nsUint32HashKey,uint32_t> > mGlyphIDs;
SCRIPT_CACHE mScriptCache;
// cache of glyph widths in 16.16 fixed-point pixels
mozilla::UniquePtr<nsDataHashtable<nsUint32HashKey,int32_t> > mGlyphWidths;
};
#endif /* GFX_GDIFONT_H */
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