зеркало из https://github.com/mozilla/gecko-dev.git
90 строки
2.9 KiB
C++
90 строки
2.9 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 "mozilla/MemoryReporting.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(const RefPtr<mozilla::gfx::UnscaledFontFreeType>& aUnscaledFont,
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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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FT2FontEntry *GetFontEntry();
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virtual already_AddRefed<mozilla::gfx::ScaledFont>
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GetScaledFont(DrawTarget *aTarget) override;
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virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontCacheSizes* aSizes) const override;
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virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontCacheSizes* aSizes) const override;
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protected:
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struct CachedGlyphData {
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CachedGlyphData()
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: glyphIndex(0xffffffffU) { }
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explicit 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(FT_Face aFace, 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(aFace, ch, &entry->mData);
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}
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return &entry->mData;
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}
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bool ShapeText(DrawTarget *aDrawTarget,
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const char16_t *aText,
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uint32_t aOffset,
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uint32_t aLength,
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Script aScript,
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bool aVertical,
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RoundingFlags aRounding,
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gfxShapedText *aShapedText) override;
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void FillGlyphDataForChar(FT_Face face, uint32_t ch, CachedGlyphData *gd);
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void AddRange(const char16_t *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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#endif /* GFX_FT2FONTS_H */
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