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Diffstat (limited to 'vcl/inc/glyphcache.hxx')
| -rw-r--r-- | vcl/inc/glyphcache.hxx | 391 |
1 files changed, 391 insertions, 0 deletions
diff --git a/vcl/inc/glyphcache.hxx b/vcl/inc/glyphcache.hxx new file mode 100644 index 000000000000..42f90672f87b --- /dev/null +++ b/vcl/inc/glyphcache.hxx @@ -0,0 +1,391 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#ifndef _SV_GLYPHCACHE_HXX +#define _SV_GLYPHCACHE_HXX + +#include <vcl/dllapi.h> + +class GlyphCache; +class GlyphMetric; +class GlyphData; +class ServerFont; +class GlyphCachePeer; +class ServerFontLayoutEngine; +class ServerFontLayout; +class ExtraKernInfo; +struct ImplKernPairData; +class ImplFontOptions; + +#include <tools/gen.hxx> +#include <boost/unordered_map.hpp> +#include <boost/unordered_set.hpp> +#include <boost/shared_ptr.hpp> + +namespace basegfx { class B2DPolyPolygon; } + +class RawBitmap; + +#include <outfont.hxx> +#include <impfont.hxx> + +class ServerFontLayout; +#include <sallayout.hxx> + +namespace vcl +{ + struct FontCapabilities; +} + +// ======================================================================= + +class VCL_PLUGIN_PUBLIC GlyphCache +{ +public: + explicit GlyphCache( GlyphCachePeer& ); + /*virtual*/ ~GlyphCache(); + + static GlyphCache& GetInstance(); + void LoadFonts(); + + void ClearFontPath(); + void AddFontPath( const String& rFontPath ); + void AddFontFile( const rtl::OString& rNormalizedName, + int nFaceNum, sal_IntPtr nFontId, const ImplDevFontAttributes&, + const ExtraKernInfo* = NULL ); + void AnnounceFonts( ImplDevFontList* ) const; + + ServerFont* CacheFont( const ImplFontSelectData& ); + void UncacheFont( ServerFont& ); + void InvalidateAllGlyphs(); + +protected: + GlyphCachePeer& mrPeer; + +private: + friend class ServerFont; + // used by ServerFont class only + void AddedGlyph( ServerFont&, GlyphData& ); + void RemovingGlyph( ServerFont&, GlyphData&, int nGlyphIndex ); + void UsingGlyph( ServerFont&, GlyphData& ); + void GrowNotify(); + +private: + sal_uLong CalcByteCount() const; + 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 ImplFontSelectData&, const ImplFontSelectData& ) const; }; + struct IFSD_Hash{ size_t operator()( const ImplFontSelectData& ) const; }; + typedef ::boost::unordered_map<ImplFontSelectData,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; + + class FreetypeManager* mpFtManager; +}; + +// ======================================================================= + +class GlyphMetric +{ +public: + Point GetOffset() const { return maOffset; } + Point GetDelta() const { return maDelta; } + 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; +}; + +// ----------------------------------------------------------------------- + +// the glyph specific data needed by a GlyphCachePeer is usually trivial, +// not attaching it to the corresponding GlyphData would be overkill +struct ExtGlyphData +{ + int meInfo; + void* mpData; + + ExtGlyphData() : meInfo(0), mpData(NULL) {} +}; + +// ----------------------------------------------------------------------- + +class GlyphData +{ +public: + const GlyphMetric& GetMetric() const { return maMetric; } + Size GetSize() const { return maMetric.GetSize(); } + + void SetSize( const Size& s) { maMetric.SetSize( s ); } + void SetOffset( int nX, int nY ) { maMetric.SetOffset( nX, nY ); } + void SetDelta( int nX, int nY ) { maMetric.SetDelta( nX, nY ); } + void SetCharWidth( long nW ) { maMetric.SetCharWidth( nW ); } + + void SetLruValue( int n ) const { mnLruValue = n; } + long GetLruValue() const { return mnLruValue;} + + ExtGlyphData& ExtDataRef() { return maExtData; } + const ExtGlyphData& ExtDataRef() const { return maExtData; } + +private: + GlyphMetric maMetric; + ExtGlyphData maExtData; + + // used by GlyphCache for cache LRU algorithm + mutable long mnLruValue; +}; + +// ======================================================================= + +class VCL_PLUGIN_PUBLIC ServerFont +{ +public: + virtual const ::rtl::OString* GetFontFileName() const { return NULL; } + virtual int GetFontFaceNumber() const { return 0; } + virtual bool TestFont() const { return true; } + virtual void* GetFtFace() const { return 0; } + virtual int GetLoadFlags() const { return 0; } + virtual void SetFontOptions( boost::shared_ptr<ImplFontOptions> ) {} + virtual boost::shared_ptr<ImplFontOptions> GetFontOptions() const + { return boost::shared_ptr<ImplFontOptions>(); } + virtual bool NeedsArtificialBold() const { return false; } + virtual bool NeedsArtificialItalic() const { return false; } + + const ImplFontSelectData& GetFontSelData() const { return maFontSelData; } + + virtual void FetchFontMetric( ImplFontMetricData&, long& rFactor ) const = 0; + virtual sal_uLong GetKernPairs( ImplKernPairData** ) const { return 0; } + virtual int GetGlyphKernValue( int, int ) const { return 0; } + virtual const ImplFontCharMap* GetImplFontCharMap() const = 0; + virtual bool GetFontCapabilities(vcl::FontCapabilities &) const { return false; } + Point TransformPoint( const Point& ) const; + + GlyphData& GetGlyphData( int nGlyphIndex ); + const GlyphMetric& GetGlyphMetric( int nGlyphIndex ) + { return GetGlyphData( nGlyphIndex ).GetMetric(); } + + virtual int GetGlyphIndex( sal_UCS4 ) const = 0; + virtual bool GetGlyphOutline( int nGlyphIndex, ::basegfx::B2DPolyPolygon& ) const = 0; + virtual bool GetAntialiasAdvice( void ) const = 0; + bool IsGlyphInvisible( int nGlyphIndex ); + virtual bool GetGlyphBitmap1( int nGlyphIndex, RawBitmap& ) const = 0; + virtual bool GetGlyphBitmap8( int nGlyphIndex, RawBitmap& ) const = 0; + + void SetExtended( int nInfo, void* ppVoid ); + int GetExtInfo() { return mnExtInfo; } + void* GetExtPointer() { return mpExtData; } + +protected: + friend class GlyphCache; + friend class ServerFontLayout; + explicit ServerFont( const ImplFontSelectData& ); + virtual ~ServerFont(); + + void AddRef() const { ++mnRefCount; } + long GetRefCount() const { return mnRefCount; } + long Release() const; + sal_uLong GetByteCount() const { return mnBytesUsed; } + + virtual void InitGlyphData( int nGlyphIndex, GlyphData& ) const = 0; + virtual void GarbageCollect( long ); + void ReleaseFromGarbageCollect(); + + virtual ServerFontLayoutEngine* GetLayoutEngine() { return NULL; } + +private: + typedef ::boost::unordered_map<int,GlyphData> GlyphList; + mutable GlyphList maGlyphList; + + const ImplFontSelectData maFontSelData; + + // info for GlyphcachePeer + int mnExtInfo; + void* mpExtData; + + // used by GlyphCache for cache LRU algorithm + mutable long mnRefCount; + mutable sal_uLong mnBytesUsed; + + ServerFont* mpPrevGCFont; + ServerFont* mpNextGCFont; + +protected: + // 16.16 fixed point values used for a rotated font + long mnCos; + long mnSin; +private: + int mnZWJ; + int mnZWNJ; + bool mbCollectedZW; +}; + +// ======================================================================= + +// a class for cache entries for physical font instances that are based on serverfonts +class VCL_PLUGIN_PUBLIC ImplServerFontEntry : public ImplFontEntry +{ +private: + ServerFont* mpServerFont; + boost::shared_ptr<ImplFontOptions> mpFontOptions; + bool mbGotFontOptions; + +public: + ImplServerFontEntry( ImplFontSelectData& ); + virtual ~ImplServerFontEntry(); + void SetServerFont( ServerFont* p) { mpServerFont = p; } + void HandleFontOptions(); +}; + +// ======================================================================= + +class VCL_PLUGIN_PUBLIC ServerFontLayout : public GenericSalLayout +{ +private: + ServerFont& mrServerFont; + + // enforce proper copy semantic + SAL_DLLPRIVATE ServerFontLayout( const ServerFontLayout& ); + SAL_DLLPRIVATE ServerFontLayout& operator=( const ServerFontLayout& ); + +public: + ServerFontLayout( ServerFont& ); + virtual bool LayoutText( ImplLayoutArgs& ); + virtual void AdjustLayout( ImplLayoutArgs& ); + virtual void DrawText( SalGraphics& ) const; + ServerFont& GetServerFont() const { return mrServerFont; } +}; + +// ======================================================================= + +class ServerFontLayoutEngine +{ +public: + virtual ~ServerFontLayoutEngine() {} + virtual bool operator()( ServerFontLayout&, ImplLayoutArgs& ); +}; + +// ======================================================================= + +class GlyphCachePeer +{ +protected: + GlyphCachePeer() : mnBytesUsed(0) {} + virtual ~GlyphCachePeer() {} + +public: + sal_Int32 GetByteCount() const { return mnBytesUsed; } + virtual void RemovingFont( ServerFont& ) {} + virtual void RemovingGlyph( ServerFont&, GlyphData&, int ) {} + +protected: + sal_Int32 mnBytesUsed; +}; + +// ======================================================================= + +class VCL_PLUGIN_PUBLIC RawBitmap +{ +public: + RawBitmap(); + ~RawBitmap(); + bool Rotate( int nAngle ); + +public: + unsigned char* mpBits; + sal_uLong mnAllocated; + + sal_uLong mnWidth; + sal_uLong mnHeight; + + sal_uLong mnScanlineSize; + sal_uLong mnBitCount; + + int mnXOffset; + int mnYOffset; +}; + +// ======================================================================= + +inline void ServerFont::SetExtended( int nInfo, void* pVoid ) +{ + mnExtInfo = nInfo; + mpExtData = pVoid; +} + +// ======================================================================= + +// ExtraKernInfo allows an on-demand query of extra kerning info #i29881# +// The kerning values have to be scaled to match the font size before use +class VCL_PLUGIN_PUBLIC ExtraKernInfo +{ +public: + ExtraKernInfo( sal_IntPtr nFontId ); + virtual ~ExtraKernInfo() {} + + bool HasKernPairs() const; + int GetUnscaledKernPairs( ImplKernPairData** ) const; + int GetUnscaledKernValue( sal_Unicode cLeft, sal_Unicode cRight ) const; + +protected: + mutable bool mbInitialized; + virtual void Initialize() const = 0; + +protected: + sal_IntPtr mnFontId; + + // container to map a unicode pair to an unscaled kerning value + struct PairEqual{ int operator()(const ImplKernPairData& rA, const ImplKernPairData& rB) const + { return (rA.mnChar1 == rB.mnChar1) && (rA.mnChar2 == rB.mnChar2); } }; + struct PairHash{ int operator()(const ImplKernPairData& rA) const + { return (rA.mnChar1) * 256 ^ rA.mnChar2; } }; + typedef boost::unordered_set< ImplKernPairData, PairHash, PairEqual > UnicodeKernPairs; + mutable UnicodeKernPairs maUnicodeKernPairs; +}; + +// ======================================================================= + +#endif // _SV_GLYPHCACHE_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |