gecko/gfx/thebes/gfxFT2Fonts.h

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2012-05-21 04:12:37 -07:00
* 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_FT2FONTS_H
#define GFX_FT2FONTS_H
#include "cairo.h"
#include "gfxTypes.h"
#include "gfxFont.h"
#include "gfxFT2FontBase.h"
#include "gfxContext.h"
#include "gfxFontUtils.h"
#include "gfxUserFontSet.h"
class FT2FontEntry;
class gfxFT2Font : public gfxFT2FontBase {
public: // new functions
gfxFT2Font(cairo_scaled_font_t *aCairoFont,
FT2FontEntry *aFontEntry,
const gfxFontStyle *aFontStyle,
bool aNeedsBold);
virtual ~gfxFT2Font ();
cairo_font_face_t *CairoFontFace();
FT2FontEntry *GetFontEntry();
static already_AddRefed<gfxFT2Font>
GetOrMakeFont(const nsAString& aName, const gfxFontStyle *aStyle,
bool aNeedsBold = false);
static already_AddRefed<gfxFT2Font>
GetOrMakeFont(FT2FontEntry *aFontEntry, const gfxFontStyle *aStyle,
bool aNeedsBold = false);
struct CachedGlyphData {
CachedGlyphData()
: glyphIndex(0xffffffffU) { }
CachedGlyphData(uint32_t gid)
: glyphIndex(gid) { }
uint32_t glyphIndex;
int32_t lsbDelta;
int32_t rsbDelta;
int32_t xAdvance;
};
const CachedGlyphData* GetGlyphDataForChar(uint32_t ch) {
CharGlyphMapEntryType *entry = mCharGlyphCache.PutEntry(ch);
if (!entry)
return nullptr;
if (entry->mData.glyphIndex == 0xffffffffU) {
// this is a new entry, fill it
FillGlyphDataForChar(ch, &entry->mData);
}
return &entry->mData;
}
virtual void SizeOfExcludingThis(nsMallocSizeOfFun aMallocSizeOf,
FontCacheSizes* aSizes) const;
virtual void SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf,
FontCacheSizes* aSizes) const;
protected:
virtual bool ShapeWord(gfxContext *aContext,
gfxShapedWord *aShapedWord,
const PRUnichar *aString,
bool aPreferPlatformShaping = false);
void FillGlyphDataForChar(uint32_t ch, CachedGlyphData *gd);
void AddRange(gfxShapedWord *aShapedWord, const PRUnichar *str);
typedef nsBaseHashtableET<nsUint32HashKey, CachedGlyphData> CharGlyphMapEntryType;
typedef nsTHashtable<CharGlyphMapEntryType> CharGlyphMap;
CharGlyphMap mCharGlyphCache;
};
#ifndef ANDROID // not needed on Android, uses the standard gfxFontGroup directly
class THEBES_API gfxFT2FontGroup : public gfxFontGroup {
public: // new functions
gfxFT2FontGroup (const nsAString& families,
const gfxFontStyle *aStyle,
gfxUserFontSet *aUserFontSet);
virtual ~gfxFT2FontGroup ();
protected: // from gfxFontGroup
virtual gfxFontGroup *Copy(const gfxFontStyle *aStyle);
protected: // new functions
static bool FontCallback (const nsAString & fontName,
const nsACString & genericName,
bool aUseFontSet,
void *closure);
bool mEnableKerning;
void GetPrefFonts(nsIAtom *aLangGroup,
nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList);
void GetCJKPrefFonts(nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList);
void FamilyListToArrayList(const nsString& aFamilies,
nsIAtom *aLangGroup,
nsTArray<nsRefPtr<gfxFontEntry> > *aFontEntryList);
already_AddRefed<gfxFT2Font> WhichFontSupportsChar(const nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList,
uint32_t aCh);
already_AddRefed<gfxFont> WhichPrefFontSupportsChar(uint32_t aCh);
already_AddRefed<gfxFont>
WhichSystemFontSupportsChar(uint32_t aCh, int32_t aRunScript);
nsTArray<gfxTextRange> mRanges;
nsString mString;
};
#endif // !ANDROID
#endif /* GFX_FT2FONTS_H */