diff options
Diffstat (limited to 'vcl/inc/unx/glyphcache.hxx')
| -rw-r--r-- | vcl/inc/unx/glyphcache.hxx | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/vcl/inc/unx/glyphcache.hxx b/vcl/inc/unx/glyphcache.hxx new file mode 100644 index 000000000000..da8f29c57608 --- /dev/null +++ b/vcl/inc/unx/glyphcache.hxx @@ -0,0 +1,300 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * 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/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#ifndef INCLUDED_VCL_INC_GENERIC_GLYPHCACHE_HXX +#define INCLUDED_VCL_INC_GENERIC_GLYPHCACHE_HXX + +#include <config_graphite.h> + +#include <ft2build.h> +#include FT_FREETYPE_H +#include FT_GLYPH_H + +#include <basebmp/bitmapdevice.hxx> +#include <com/sun/star/i18n/XBreakIterator.hpp> +#include <tools/gen.hxx> +#include <vcl/dllapi.h> +#include <vcl/metric.hxx> + +#include <fontinstance.hxx> +#include <sallayout.hxx> +#include "fontattributes.hxx" + +#include <unordered_map> + +class FreetypeManager; +class FreetypeFontInfo; +class GlyphData; +class GraphiteFaceWrapper; +class FontConfigFontOptions; +class PhysicalFontCollection; +class ServerFont; +class ServerFontLayout; +class ServerFontLayoutEngine; +class SvpGcpHelper; + +namespace basegfx { class B2DPolyPolygon; } +namespace vcl { struct FontCapabilities; } + +class VCL_DLLPUBLIC GlyphCache +{ +public: + explicit GlyphCache(); + virtual ~GlyphCache(); + + static GlyphCache& GetInstance(); + + void AddFontFile( + const OString& rNormalizedName, + int nFaceNum, sal_IntPtr nFontId, + const FontAttributes&); + + void AnnounceFonts( PhysicalFontCollection* ) const; + + ServerFont* CacheFont( const FontSelectPattern& ); + void UncacheFont( ServerFont& ); + void ClearFontCache(); + void InvalidateAllGlyphs(); + +private: + friend class ServerFont; + // used by ServerFont class only + void AddedGlyph( ServerFont&, GlyphData& ); + void RemovingGlyph(); + void UsingGlyph( ServerFont&, GlyphData& ); + void GrowNotify(); + +private: + void GarbageCollect(); + + // the GlyphCache's FontList matches a font request to a serverfont instance + // the FontList key's mpFontData member is reinterpreted as integer font id + struct IFSD_Equal{ bool operator()( const FontSelectPattern&, const FontSelectPattern& ) const; }; + struct IFSD_Hash{ size_t operator()( const FontSelectPattern& ) const; }; + typedef std::unordered_map<FontSelectPattern,ServerFont*,IFSD_Hash,IFSD_Equal > FontList; + + FontList maFontList; + sal_uLong mnMaxSize; // max overall cache size in bytes + mutable sal_uLong mnBytesUsed; + mutable long mnLruIndex; + mutable int mnGlyphCount; + ServerFont* mpCurrentGCFont; + + FreetypeManager* mpFtManager; +}; + +class GlyphMetric +{ +public: + GlyphMetric() : mnAdvanceWidth(0) {} + + Point GetOffset() const { return maOffset; } + Size GetSize() const { return maSize; } + long GetCharWidth() const { return mnAdvanceWidth; } + +protected: + friend class GlyphData; + void SetOffset( int nX, int nY ) { maOffset = Point( nX, nY); } + void SetDelta( int nX, int nY ) { maDelta = Point( nX, nY); } + void SetSize( const Size& s ) { maSize = s; } + void SetCharWidth( long nW ) { mnAdvanceWidth = nW; } + +private: + long mnAdvanceWidth; + Point maDelta; + Point maOffset; + Size maSize; +}; + +class GlyphData +{ +public: + GlyphData() : mnLruValue(0) {} + + const GlyphMetric& GetMetric() const { return maFontAttributes; } + + void SetSize( const Size& s) { maFontAttributes.SetSize( s ); } + void SetOffset( int nX, int nY ) { maFontAttributes.SetOffset( nX, nY ); } + void SetDelta( int nX, int nY ) { maFontAttributes.SetDelta( nX, nY ); } + void SetCharWidth( long nW ) { maFontAttributes.SetCharWidth( nW ); } + + void SetLruValue( int n ) const { mnLruValue = n; } + long GetLruValue() const { return mnLruValue;} + +private: + GlyphMetric maFontAttributes; + + // used by GlyphCache for cache LRU algorithm + mutable long mnLruValue; +}; + +class VCL_DLLPUBLIC ServerFont +{ +public: + ServerFont( const FontSelectPattern&, FreetypeFontInfo* ); + virtual ~ServerFont(); + + const OString& GetFontFileName() const; + bool TestFont() const { return mbFaceOk;} + FT_Face GetFtFace() const; + int GetLoadFlags() const { return (mnLoadFlags & ~FT_LOAD_IGNORE_TRANSFORM); } + void SetFontOptions(std::shared_ptr<FontConfigFontOptions>); + std::shared_ptr<FontConfigFontOptions> GetFontOptions() const; + bool NeedsArtificialBold() const { return mbArtBold; } + bool NeedsArtificialItalic() const { return mbArtItalic; } + + const FontSelectPattern& GetFontSelData() const { return maFontSelData; } + + void FetchFontAttributes( FontAttributes&, long& rFactor ) const; + const unsigned char* GetTable( const char* pName, sal_uLong* pLength ); + int GetEmUnits() const { return maFaceFT->units_per_EM;} + double GetStretch() { return mfStretch; } + const FontCharMapPtr GetFontCharMap() const; + bool GetFontCapabilities(vcl::FontCapabilities &) const; + + GlyphData& GetGlyphData( sal_GlyphId ); + const GlyphMetric& GetGlyphMetric( sal_GlyphId aGlyphId ) + { return GetGlyphData( aGlyphId ).GetMetric(); } + +#if ENABLE_GRAPHITE + GraphiteFaceWrapper* GetGraphiteFace() const; +#endif + + sal_GlyphId GetGlyphIndex( sal_UCS4 ) const; + sal_GlyphId GetRawGlyphIndex( sal_UCS4, sal_UCS4 = 0 ) const; + sal_GlyphId FixupGlyphIndex( sal_GlyphId aGlyphId, sal_UCS4 ) const; + bool GetGlyphOutline( sal_GlyphId aGlyphId, basegfx::B2DPolyPolygon& ) const; + bool GetAntialiasAdvice() const; + +private: + friend class GlyphCache; + friend class ServerFontLayout; + friend class ServerFontInstance; + friend class X11SalGraphics; + friend class CairoTextRender; + + void AddRef() const { ++mnRefCount; } + long GetRefCount() const { return mnRefCount; } + long Release() const; + sal_uLong GetByteCount() const { return mnBytesUsed; } + + void InitGlyphData( sal_GlyphId, GlyphData& ) const; + void GarbageCollect( long ); + void ReleaseFromGarbageCollect(); + + int ApplyGlyphTransform( int nGlyphFlags, FT_GlyphRec_*, bool ) const; + bool ApplyGSUB( const FontSelectPattern& ); + + ServerFontLayoutEngine* GetLayoutEngine(); + + typedef std::unordered_map<int,GlyphData> GlyphList; + mutable GlyphList maGlyphList; + + const FontSelectPattern maFontSelData; + + // used by GlyphCache for cache LRU algorithm + mutable long mnRefCount; + mutable sal_uLong mnBytesUsed; + + ServerFont* mpPrevGCFont; + ServerFont* mpNextGCFont; + + // 16.16 fixed point values used for a rotated font + long mnCos; + long mnSin; + + int mnWidth; + int mnPrioEmbedded; + int mnPrioAntiAlias; + int mnPrioAutoHint; + FreetypeFontInfo* mpFontInfo; + FT_Int mnLoadFlags; + double mfStretch; + FT_FaceRec_* maFaceFT; + FT_SizeRec_* maSizeFT; + + std::shared_ptr<FontConfigFontOptions> mxFontOptions; + + bool mbFaceOk; + bool mbArtItalic; + bool mbArtBold; + bool mbUseGamma; + + typedef std::unordered_map<int,int> GlyphSubstitution; + GlyphSubstitution maGlyphSubstitution; + + ServerFontLayoutEngine* mpLayoutEngine; +}; + +// a class for cache entries for physical font instances that are based on serverfonts +class VCL_DLLPUBLIC ServerFontInstance : public LogicalFontInstance +{ +public: + ServerFontInstance( FontSelectPattern& ); + virtual ~ServerFontInstance(); + + void SetServerFont(ServerFont* p); + void HandleFontOptions(); + +private: + ServerFont* mpServerFont; + std::shared_ptr<FontConfigFontOptions> mxFontOptions; + bool mbGotFontOptions; + +}; + +class VCL_DLLPUBLIC ServerFontLayout : public GenericSalLayout +{ +public: + ServerFontLayout( ServerFont& ); + + virtual bool LayoutText( ImplLayoutArgs& ) override; + virtual void AdjustLayout( ImplLayoutArgs& ) override; + virtual void DrawText( SalGraphics& ) const override; + + void SetNeedFallback( + ImplLayoutArgs& rArgs, + sal_Int32 nIndex, + bool bRightToLeft); + + ServerFont& GetServerFont() const { return mrServerFont; } + + virtual std::shared_ptr<vcl::TextLayoutCache> + CreateTextLayoutCache(OUString const&) const override; + +private: + ServerFont& mrServerFont; + css::uno::Reference<css::i18n::XBreakIterator> mxBreak; + + ServerFontLayout( const ServerFontLayout& ) = delete; + ServerFontLayout& operator=( const ServerFontLayout& ) = delete; + +}; + +class ServerFontLayoutEngine +{ +public: + virtual ~ServerFontLayoutEngine() {} + + virtual bool Layout(ServerFontLayout&, ImplLayoutArgs&) = 0; +}; + +#endif // INCLUDED_VCL_INC_GENERIC_GLYPHCACHE_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |