зеркало из https://github.com/mozilla/gecko-dev.git
132 строки
4.4 KiB
C++
132 строки
4.4 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_FT2FONTS_H
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#define GFX_FT2FONTS_H
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#include "cairo.h"
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#include "gfxTypes.h"
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#include "gfxFont.h"
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#include "gfxFT2FontBase.h"
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#include "gfxContext.h"
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#include "gfxFontUtils.h"
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#include "gfxUserFontSet.h"
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class FT2FontEntry;
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class gfxFT2Font : public gfxFT2FontBase {
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public: // new functions
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gfxFT2Font(cairo_scaled_font_t *aCairoFont,
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FT2FontEntry *aFontEntry,
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const gfxFontStyle *aFontStyle,
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bool aNeedsBold);
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virtual ~gfxFT2Font ();
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cairo_font_face_t *CairoFontFace();
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FT2FontEntry *GetFontEntry();
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static already_AddRefed<gfxFT2Font>
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GetOrMakeFont(const nsAString& aName, const gfxFontStyle *aStyle,
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bool aNeedsBold = false);
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static already_AddRefed<gfxFT2Font>
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GetOrMakeFont(FT2FontEntry *aFontEntry, const gfxFontStyle *aStyle,
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bool aNeedsBold = false);
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struct CachedGlyphData {
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CachedGlyphData()
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: glyphIndex(0xffffffffU) { }
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CachedGlyphData(uint32_t gid)
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: glyphIndex(gid) { }
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uint32_t glyphIndex;
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int32_t lsbDelta;
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int32_t rsbDelta;
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int32_t xAdvance;
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};
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const CachedGlyphData* GetGlyphDataForChar(uint32_t ch) {
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CharGlyphMapEntryType *entry = mCharGlyphCache.PutEntry(ch);
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if (!entry)
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return nullptr;
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if (entry->mData.glyphIndex == 0xffffffffU) {
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// this is a new entry, fill it
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FillGlyphDataForChar(ch, &entry->mData);
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}
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return &entry->mData;
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}
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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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protected:
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virtual bool ShapeText(gfxContext *aContext,
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const PRUnichar *aText,
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uint32_t aOffset,
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uint32_t aLength,
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int32_t aScript,
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gfxShapedText *aShapedText,
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bool aPreferPlatformShaping);
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void FillGlyphDataForChar(uint32_t ch, CachedGlyphData *gd);
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void AddRange(const PRUnichar *aText,
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uint32_t aOffset,
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uint32_t aLength,
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gfxShapedText *aShapedText);
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typedef nsBaseHashtableET<nsUint32HashKey, CachedGlyphData> CharGlyphMapEntryType;
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typedef nsTHashtable<CharGlyphMapEntryType> CharGlyphMap;
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CharGlyphMap mCharGlyphCache;
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};
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#ifndef ANDROID // not needed on Android, uses the standard gfxFontGroup directly
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class THEBES_API gfxFT2FontGroup : public gfxFontGroup {
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public: // new functions
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gfxFT2FontGroup (const nsAString& families,
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const gfxFontStyle *aStyle,
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gfxUserFontSet *aUserFontSet);
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virtual ~gfxFT2FontGroup ();
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protected: // from gfxFontGroup
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virtual gfxFontGroup *Copy(const gfxFontStyle *aStyle);
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protected: // new functions
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static bool FontCallback (const nsAString & fontName,
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const nsACString & genericName,
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bool aUseFontSet,
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void *closure);
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bool mEnableKerning;
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void GetPrefFonts(nsIAtom *aLangGroup,
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nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList);
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void GetCJKPrefFonts(nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList);
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void FamilyListToArrayList(const nsString& aFamilies,
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nsIAtom *aLangGroup,
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nsTArray<nsRefPtr<gfxFontEntry> > *aFontEntryList);
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already_AddRefed<gfxFT2Font> WhichFontSupportsChar(const nsTArray<nsRefPtr<gfxFontEntry> >& aFontEntryList,
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uint32_t aCh);
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already_AddRefed<gfxFont> WhichPrefFontSupportsChar(uint32_t aCh);
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already_AddRefed<gfxFont>
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WhichSystemFontSupportsChar(uint32_t aCh, int32_t aRunScript);
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nsTArray<gfxTextRange> mRanges;
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nsString mString;
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};
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#endif // !ANDROID
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#endif /* GFX_FT2FONTS_H */
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