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2b03a82ba0
This removes a lot of old cruft in thebes to instantiate Cairo scaled fonts. Instead, we only instantiate the Cairo scaled font inside Moz2D when we actually need it for DrawTargetCairo. This thus gets rid of the duplicated code we had inside both Moz2D and thebes to deal with Cairo scaled fonts. Differential Revision: https://phabricator.services.mozilla.com/D47297 --HG-- extra : moz-landing-system : lando
81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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 "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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RefPtr<mozilla::gfx::SharedFTFace>&& aFTFace,
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FT2FontEntry* aFontEntry, const gfxFontStyle* aFontStyle,
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int aLoadFlags);
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virtual ~gfxFT2Font();
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FT2FontEntry* GetFontEntry();
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already_AddRefed<mozilla::gfx::ScaledFont> GetScaledFont(
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DrawTarget* aTarget) override;
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bool ShouldHintMetrics() const override;
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void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontCacheSizes* aSizes) const override;
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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() : glyphIndex(0xffffffffU) {}
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explicit CachedGlyphData(uint32_t gid) : 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) return nullptr;
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if (entry->GetData().glyphIndex == 0xffffffffU) {
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// this is a new entry, fill it
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FillGlyphDataForChar(aFace, ch, entry->GetModifiableData());
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}
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return &entry->GetData();
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}
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bool ShapeText(DrawTarget* aDrawTarget, const char16_t* aText,
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uint32_t aOffset, uint32_t aLength, Script aScript,
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bool aVertical, 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, uint32_t aOffset, uint32_t aLength,
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gfxShapedText* aShapedText);
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typedef nsBaseHashtableET<nsUint32HashKey, CachedGlyphData>
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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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