359 lines
13 KiB
C++
359 lines
13 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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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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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_VCL_INC_GENERIC_GLYPHCACHE_HXX
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#define INCLUDED_VCL_INC_GENERIC_GLYPHCACHE_HXX
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#include <config_graphite.h>
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include FT_GLYPH_H
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#include <basebmp/bitmapdevice.hxx>
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#include <com/sun/star/i18n/XBreakIterator.hpp>
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#include <tools/gen.hxx>
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#include <vcl/dllapi.h>
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#include <vcl/metric.hxx>
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#include <outfont.hxx>
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#include <sallayout.hxx>
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#include <unordered_map>
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class FtFontInfo;
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class GlyphCachePeer;
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class GlyphData;
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class GraphiteFaceWrapper;
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class ImplFontOptions;
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class PhysicalFontCollection;
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class RawBitmap;
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class ServerFont;
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class ServerFontLayout;
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class ServerFontLayoutEngine;
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class SvpGcpHelper;
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namespace basegfx { class B2DPolyPolygon; }
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namespace vcl { struct FontCapabilities; }
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class VCL_DLLPUBLIC GlyphCache
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{
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public:
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explicit GlyphCache( GlyphCachePeer& );
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~GlyphCache();
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static GlyphCache& GetInstance();
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void AddFontFile(
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const OString& rNormalizedName,
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int nFaceNum, sal_IntPtr nFontId,
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const ImplDevFontAttributes&);
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void AnnounceFonts( PhysicalFontCollection* ) const;
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ServerFont* CacheFont( const FontSelectPattern& );
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void UncacheFont( ServerFont& );
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void ClearFontCache();
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void InvalidateAllGlyphs();
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protected:
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GlyphCachePeer& mrPeer;
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private:
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friend class ServerFont;
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// used by ServerFont class only
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void AddedGlyph( ServerFont&, GlyphData& );
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void RemovingGlyph( GlyphData& );
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void UsingGlyph( ServerFont&, GlyphData& );
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void GrowNotify();
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private:
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void GarbageCollect();
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// the GlyphCache's FontList matches a font request to a serverfont instance
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// the FontList key's mpFontData member is reinterpreted as integer font id
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struct IFSD_Equal{ bool operator()( const FontSelectPattern&, const FontSelectPattern& ) const; };
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struct IFSD_Hash{ size_t operator()( const FontSelectPattern& ) const; };
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typedef std::unordered_map<FontSelectPattern,ServerFont*,IFSD_Hash,IFSD_Equal > FontList;
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FontList maFontList;
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sal_uLong mnMaxSize; // max overall cache size in bytes
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mutable sal_uLong mnBytesUsed;
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mutable long mnLruIndex;
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mutable int mnGlyphCount;
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ServerFont* mpCurrentGCFont;
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class FreetypeManager* mpFtManager;
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};
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class GlyphMetric
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{
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public:
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GlyphMetric() : mnAdvanceWidth(0) {}
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Point GetOffset() const { return maOffset; }
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Point GetDelta() const { return maDelta; }
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Size GetSize() const { return maSize; }
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long GetCharWidth() const { return mnAdvanceWidth; }
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protected:
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friend class GlyphData;
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void SetOffset( int nX, int nY ) { maOffset = Point( nX, nY); }
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void SetDelta( int nX, int nY ) { maDelta = Point( nX, nY); }
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void SetSize( const Size& s ) { maSize = s; }
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void SetCharWidth( long nW ) { mnAdvanceWidth = nW; }
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private:
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long mnAdvanceWidth;
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Point maDelta;
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Point maOffset;
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Size maSize;
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};
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// the glyph specific data needed by a GlyphCachePeer is usually trivial,
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// not attaching it to the corresponding GlyphData would be overkill;
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// this is currently only used by the headless (aka svp) plugin, where meInfo is
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// basebmp::Format and mpData is SvpGcpHelper*
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struct ExtGlyphData
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{
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basebmp::Format meInfo;
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SvpGcpHelper* mpData;
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ExtGlyphData() : meInfo(basebmp::Format::NONE), mpData(NULL) {}
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};
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class GlyphData
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{
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public:
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GlyphData() : mnLruValue(0) {}
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const GlyphMetric& GetMetric() const { return maMetric; }
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Size GetSize() const { return maMetric.GetSize(); }
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void SetSize( const Size& s) { maMetric.SetSize( s ); }
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void SetOffset( int nX, int nY ) { maMetric.SetOffset( nX, nY ); }
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void SetDelta( int nX, int nY ) { maMetric.SetDelta( nX, nY ); }
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void SetCharWidth( long nW ) { maMetric.SetCharWidth( nW ); }
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void SetLruValue( int n ) const { mnLruValue = n; }
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long GetLruValue() const { return mnLruValue;}
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ExtGlyphData& ExtDataRef() { return maExtData; }
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const ExtGlyphData& ExtDataRef() const { return maExtData; }
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private:
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GlyphMetric maMetric;
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ExtGlyphData maExtData;
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// used by GlyphCache for cache LRU algorithm
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mutable long mnLruValue;
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};
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class VCL_DLLPUBLIC ServerFont
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{
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public:
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ServerFont( const FontSelectPattern&, FtFontInfo* );
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virtual ~ServerFont();
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const OString& GetFontFileName() const;
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bool TestFont() const { return mbFaceOk;}
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FT_Face GetFtFace() const;
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int GetLoadFlags() const { return (mnLoadFlags & ~FT_LOAD_IGNORE_TRANSFORM); }
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void SetFontOptions(std::shared_ptr<ImplFontOptions>);
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std::shared_ptr<ImplFontOptions> GetFontOptions() const;
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bool NeedsArtificialBold() const { return mbArtBold; }
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bool NeedsArtificialItalic() const { return mbArtItalic; }
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const FontSelectPattern& GetFontSelData() const { return maFontSelData; }
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void FetchFontMetric( ImplFontMetricData&, long& rFactor ) const;
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const unsigned char* GetTable( const char* pName, sal_uLong* pLength );
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int GetEmUnits() const { return maFaceFT->units_per_EM;}
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const FT_Size_Metrics& GetMetricsFT() const { return maSizeFT->metrics; }
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const FontCharMapPtr GetFontCharMap() const;
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bool GetFontCapabilities(vcl::FontCapabilities &) const;
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GlyphData& GetGlyphData( sal_GlyphId );
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const GlyphMetric& GetGlyphMetric( sal_GlyphId aGlyphId )
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{ return GetGlyphData( aGlyphId ).GetMetric(); }
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#if ENABLE_GRAPHITE
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GraphiteFaceWrapper* GetGraphiteFace() const;
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#endif
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sal_GlyphId GetGlyphIndex( sal_UCS4 ) const;
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sal_GlyphId GetRawGlyphIndex( sal_UCS4, sal_UCS4 = 0 ) const;
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sal_GlyphId FixupGlyphIndex( sal_GlyphId aGlyphId, sal_UCS4 ) const;
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bool GetGlyphOutline( sal_GlyphId aGlyphId, ::basegfx::B2DPolyPolygon& ) const;
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bool GetAntialiasAdvice() const;
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bool GetGlyphBitmap1( sal_GlyphId aGlyphId, RawBitmap& ) const;
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bool GetGlyphBitmap8( sal_GlyphId aGlyphId, RawBitmap& ) const;
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private:
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friend class GlyphCache;
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friend class ServerFontLayout;
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friend class ImplServerFontEntry;
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friend class X11SalGraphics;
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friend class CairoTextRender;
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void AddRef() const { ++mnRefCount; }
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long GetRefCount() const { return mnRefCount; }
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long Release() const;
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sal_uLong GetByteCount() const { return mnBytesUsed; }
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void InitGlyphData( sal_GlyphId, GlyphData& ) const;
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void GarbageCollect( long );
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void ReleaseFromGarbageCollect();
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int ApplyGlyphTransform( int nGlyphFlags, FT_GlyphRec_*, bool ) const;
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bool ApplyGSUB( const FontSelectPattern& );
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ServerFontLayoutEngine* GetLayoutEngine();
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typedef std::unordered_map<int,GlyphData> GlyphList;
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mutable GlyphList maGlyphList;
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const FontSelectPattern maFontSelData;
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// used by GlyphCache for cache LRU algorithm
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mutable long mnRefCount;
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mutable sal_uLong mnBytesUsed;
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ServerFont* mpPrevGCFont;
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ServerFont* mpNextGCFont;
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// 16.16 fixed point values used for a rotated font
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long mnCos;
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long mnSin;
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bool mbCollectedZW;
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int mnWidth;
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int mnPrioEmbedded;
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int mnPrioAntiAlias;
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int mnPrioAutoHint;
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FtFontInfo* mpFontInfo;
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FT_Int mnLoadFlags;
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double mfStretch;
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FT_FaceRec_* maFaceFT;
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FT_SizeRec_* maSizeFT;
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std::shared_ptr<ImplFontOptions> mxFontOptions;
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bool mbFaceOk;
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bool mbArtItalic;
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bool mbArtBold;
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bool mbUseGamma;
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typedef std::unordered_map<int,int> GlyphSubstitution;
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GlyphSubstitution maGlyphSubstitution;
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ServerFontLayoutEngine* mpLayoutEngine;
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};
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// a class for cache entries for physical font instances that are based on serverfonts
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class VCL_DLLPUBLIC ImplServerFontEntry : public ImplFontEntry
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{
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public:
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ImplServerFontEntry( FontSelectPattern& );
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virtual ~ImplServerFontEntry();
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void SetServerFont(ServerFont* p);
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void HandleFontOptions();
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private:
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ServerFont* mpServerFont;
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std::shared_ptr<ImplFontOptions> mxFontOptions;
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bool mbGotFontOptions;
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};
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class VCL_DLLPUBLIC ServerFontLayout : public GenericSalLayout
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{
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public:
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ServerFontLayout( ServerFont& );
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virtual bool LayoutText( ImplLayoutArgs& ) SAL_OVERRIDE;
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virtual void AdjustLayout( ImplLayoutArgs& ) SAL_OVERRIDE;
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virtual void DrawText( SalGraphics& ) const SAL_OVERRIDE;
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void SetNeedFallback(
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ImplLayoutArgs& rArgs,
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sal_Int32 nIndex,
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bool bRightToLeft);
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ServerFont& GetServerFont() const { return mrServerFont; }
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virtual std::shared_ptr<vcl::TextLayoutCache>
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CreateTextLayoutCache(OUString const&) const SAL_OVERRIDE;
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private:
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ServerFont& mrServerFont;
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com::sun::star::uno::Reference<com::sun::star::i18n::XBreakIterator> mxBreak;
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ServerFontLayout( const ServerFontLayout& ) SAL_DELETED_FUNCTION;
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ServerFontLayout& operator=( const ServerFontLayout& ) SAL_DELETED_FUNCTION;
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};
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class ServerFontLayoutEngine
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{
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public:
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virtual ~ServerFontLayoutEngine() {}
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virtual bool Layout(ServerFontLayout&, ImplLayoutArgs&) = 0;
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};
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class GlyphCachePeer
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{
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protected:
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GlyphCachePeer() {}
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virtual ~GlyphCachePeer() {}
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public:
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virtual void RemovingFont( ServerFont& ) {}
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virtual void RemovingGlyph( GlyphData& ) {}
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};
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class VCL_DLLPUBLIC RawBitmap
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{
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public:
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RawBitmap();
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~RawBitmap();
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bool Rotate( int nAngle );
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public:
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basebmp::RawMemorySharedArray mpBits;
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sal_uLong mnAllocated;
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sal_uLong mnWidth;
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sal_uLong mnHeight;
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sal_uLong mnScanlineSize;
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sal_uLong mnBitCount;
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int mnXOffset;
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int mnYOffset;
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};
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#endif // INCLUDED_VCL_INC_GENERIC_GLYPHCACHE_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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