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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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 "mozilla/MemoryReporting.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(const RefPtr<mozilla::gfx::UnscaledFontFreeType>& aUnscaledFont,
RefPtr<mozilla::gfx::SharedFTFace>&& aFTFace,
FT2FontEntry* aFontEntry, const gfxFontStyle* aFontStyle,
int aLoadFlags);
virtual ~gfxFT2Font();
FT2FontEntry* GetFontEntry();
already_AddRefed<mozilla::gfx::ScaledFont> GetScaledFont(
DrawTarget* aTarget) override;
bool ShouldHintMetrics() const override;
void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
FontCacheSizes* aSizes) const override;
void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
FontCacheSizes* aSizes) const override;
protected:
struct CachedGlyphData {
CachedGlyphData() : glyphIndex(0xffffffffU) {}
explicit CachedGlyphData(uint32_t gid) : glyphIndex(gid) {}
uint32_t glyphIndex;
int32_t lsbDelta;
int32_t rsbDelta;
int32_t xAdvance;
};
const CachedGlyphData* GetGlyphDataForChar(FT_Face aFace, uint32_t ch) {
CharGlyphMapEntryType* entry = mCharGlyphCache.PutEntry(ch);
if (!entry) return nullptr;
if (entry->GetData().glyphIndex == 0xffffffffU) {
// this is a new entry, fill it
FillGlyphDataForChar(aFace, ch, entry->GetModifiableData());
}
return &entry->GetData();
}
bool ShapeText(DrawTarget* aDrawTarget, const char16_t* aText,
uint32_t aOffset, uint32_t aLength, Script aScript,
nsAtom* aLanguage, bool aVertical, RoundingFlags aRounding,
gfxShapedText* aShapedText) override;
void FillGlyphDataForChar(FT_Face face, uint32_t ch, CachedGlyphData* gd);
void AddRange(const char16_t* aText, uint32_t aOffset, uint32_t aLength,
gfxShapedText* aShapedText);
typedef nsBaseHashtableET<nsUint32HashKey, CachedGlyphData>
CharGlyphMapEntryType;
typedef nsTHashtable<CharGlyphMapEntryType> CharGlyphMap;
CharGlyphMap mCharGlyphCache;
};
#endif /* GFX_FT2FONTS_H */
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