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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_FT2FONTS_H
#define GFX_FT2FONTS_H
#include "mozilla/MemoryReporting.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 ();
FT2FontEntry *GetFontEntry();
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 AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
FontCacheSizes* aSizes) const override;
virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
FontCacheSizes* aSizes) const override;
protected:
virtual bool ShapeText(DrawTarget *aDrawTarget,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
Script aScript,
bool aVertical,
gfxShapedText *aShapedText) override;
void FillGlyphDataForChar(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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