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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
98 lines
3.5 KiB
C++
98 lines
3.5 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_GDIFONT_H
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#define GFX_GDIFONT_H
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#include "mozilla/MemoryReporting.h"
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#include "gfxFont.h"
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#include "gfxGDIFontList.h"
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#include "nsDataHashtable.h"
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#include "nsHashKeys.h"
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#include "usp10.h"
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class gfxGDIFont : public gfxFont {
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public:
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gfxGDIFont(GDIFontEntry* aFontEntry, const gfxFontStyle* aFontStyle,
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AntialiasOption anAAOption = kAntialiasDefault);
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virtual ~gfxGDIFont();
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HFONT GetHFONT() { return mFont; }
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/* overrides for the pure virtual methods in gfxFont */
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uint32_t GetSpaceGlyph() override;
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already_AddRefed<mozilla::gfx::ScaledFont> GetScaledFont(
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DrawTarget* aTarget) override;
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/* override Measure to add padding for antialiasing */
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RunMetrics Measure(const gfxTextRun* aTextRun, uint32_t aStart, uint32_t aEnd,
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BoundingBoxType aBoundingBoxType,
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DrawTarget* aDrawTargetForTightBoundingBox,
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Spacing* aSpacing,
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mozilla::gfx::ShapedTextFlags aOrientation) override;
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/* required for MathML to suppress effects of ClearType "padding" */
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mozilla::UniquePtr<gfxFont> CopyWithAntialiasOption(
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AntialiasOption anAAOption) override;
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// If the font has a cmap table, we handle it purely with harfbuzz;
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// but if not (e.g. .fon fonts), we'll use a GDI callback to get glyphs.
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bool ProvidesGetGlyph() const override { return !mFontEntry->HasCmapTable(); }
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uint32_t GetGlyph(uint32_t aUnicode, uint32_t aVarSelector) override;
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bool ProvidesGlyphWidths() const override { return true; }
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// get hinted glyph width in pixels as 16.16 fixed-point value
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int32_t GetGlyphWidth(uint16_t aGID) override;
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bool GetGlyphBounds(uint16_t aGID, gfxRect* aBounds, bool aTight) override;
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void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontCacheSizes* aSizes) const;
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void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontCacheSizes* aSizes) const;
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FontType GetType() const override { return FONT_TYPE_GDI; }
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protected:
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const Metrics& GetHorizontalMetrics() override;
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/* override to ensure the cairo font is set up properly */
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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 Initialize(); // creates metrics and Cairo fonts
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// Fill the given LOGFONT record according to our size.
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// (Synthetic italic is *not* handled here, because GDI may not reliably
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// use the face we expect if we tweak the lfItalic field, and because we
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// have generic support for this in gfxFont::Draw instead.)
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void FillLogFont(LOGFONTW& aLogFont, gfxFloat aSize);
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HFONT mFont;
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Metrics* mMetrics;
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uint32_t mSpaceGlyph;
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bool mIsBitmap;
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bool mNeedsSyntheticBold;
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// cache of glyph IDs (used for non-sfnt fonts only)
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mozilla::UniquePtr<nsDataHashtable<nsUint32HashKey, uint32_t> > mGlyphIDs;
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SCRIPT_CACHE mScriptCache;
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// cache of glyph widths in 16.16 fixed-point pixels
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mozilla::UniquePtr<nsDataHashtable<nsUint32HashKey, int32_t> > mGlyphWidths;
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};
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#endif /* GFX_GDIFONT_H */
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