/* -*- 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 * * for a copy of the LGPLv3 License. * ************************************************************************/ #ifndef _SV_SALLAYOUT_HXX #define _SV_SALLAYOUT_HXX #include #include namespace basegfx { class B2DPolyPolygon; typedef std::vector B2DPolyPolygonVector; } #ifndef _TOOLS_LANG_HXX typedef unsigned short LanguageType; #endif #include #include #include // for typedef sal_UCS4 #include class SalGraphics; class ImplFontData; #define MAX_FALLBACK 16 // ---------------- // - LayoutOption - // ---------------- #define SAL_LAYOUT_BIDI_RTL 0x0001 #define SAL_LAYOUT_BIDI_STRONG 0x0002 #define SAL_LAYOUT_RIGHT_ALIGN 0x0004 #define SAL_LAYOUT_KERNING_PAIRS 0x0010 #define SAL_LAYOUT_KERNING_ASIAN 0x0020 #define SAL_LAYOUT_VERTICAL 0x0040 #define SAL_LAYOUT_COMPLEX_DISABLED 0x0100 #define SAL_LAYOUT_ENABLE_LIGATURES 0x0200 #define SAL_LAYOUT_SUBSTITUTE_DIGITS 0x0400 #define SAL_LAYOUT_KASHIDA_JUSTIFICATON 0x0800 #define SAL_LAYOUT_DISABLE_GLYPH_PROCESSING 0x1000 #define SAL_LAYOUT_FOR_FALLBACK 0x2000 // ----------------- // used for managing runs e.g. for BiDi, glyph and script fallback class VCL_PLUGIN_PUBLIC ImplLayoutRuns { private: int mnRunIndex; std::vector maRuns; public: ImplLayoutRuns() { mnRunIndex = 0; maRuns.reserve(8); } void Clear() { maRuns.clear(); } bool AddPos( int nCharPos, bool bRTL ); bool AddRun( int nMinRunPos, int nEndRunPos, bool bRTL ); bool IsEmpty() const { return maRuns.empty(); } void ResetPos() { mnRunIndex = 0; } void NextRun() { mnRunIndex += 2; } bool GetRun( int* nMinRunPos, int* nEndRunPos, bool* bRTL ) const; bool GetNextPos( int* nCharPos, bool* bRTL ); bool PosIsInRun( int nCharPos ) const; bool PosIsInAnyRun( int nCharPos ) const; }; // ----------------- class ImplLayoutArgs { public: // string related inputs int mnFlags; int mnLength; int mnMinCharPos; int mnEndCharPos; const xub_Unicode* mpStr; // positioning related inputs const sal_Int32* mpDXArray; // in pixel units long mnLayoutWidth; // in pixel units int mnOrientation; // in 0-3600 system // data for bidi and glyph+script fallback ImplLayoutRuns maRuns; ImplLayoutRuns maReruns; public: ImplLayoutArgs( const xub_Unicode* pStr, int nLength, int nMinCharPos, int nEndCharPos, int nFlags ); void SetLayoutWidth( long nWidth ) { mnLayoutWidth = nWidth; } void SetDXArray( const sal_Int32* pDXArray ) { mpDXArray = pDXArray; } void SetOrientation( int nOrientation ) { mnOrientation = nOrientation; } void ResetPos() { maRuns.ResetPos(); } bool GetNextPos( int* nCharPos, bool* bRTL ) { return maRuns.GetNextPos( nCharPos, bRTL ); } bool GetNextRun( int* nMinRunPos, int* nEndRunPos, bool* bRTL ); bool NeedFallback( int nCharPos, bool bRTL ) { return maReruns.AddPos( nCharPos, bRTL ); } bool NeedFallback( int nMinRunPos, int nEndRunPos, bool bRTL ) { return maReruns.AddRun( nMinRunPos, nEndRunPos, bRTL ); } // methods used by BiDi and glyph fallback bool NeedFallback() const { return !maReruns.IsEmpty(); } bool PrepareFallback(); protected: void AddRun( int nMinCharPos, int nEndCharPos, bool bRTL ); }; // helper functions often used with ImplLayoutArgs bool IsDiacritic( sal_UCS4 ); int GetVerticalFlags( sal_UCS4 ); sal_UCS4 GetVerticalChar( sal_UCS4 ); // #i80090# GetMirroredChar also needed outside vcl, moved to svapp.hxx // VCL_DLLPUBLIC sal_UCS4 GetMirroredChar( sal_UCS4 ); sal_UCS4 GetLocalizedChar( sal_UCS4, LanguageType ); // ------------- // - SalLayout - // ------------- typedef sal_uInt32 sal_GlyphId; // Glyph Flags #define GF_NONE 0x00000000 #define GF_FLAGMASK 0xFF800000 #define GF_IDXMASK ~GF_FLAGMASK #define GF_ISCHAR 0x00800000 #define GF_ROTL 0x01000000 // caution !!! #define GF_VERT 0x02000000 // GF_VERT is only for windows implementation // (win/source/gdi/salgdi3.cxx, win/source/gdi/winlayout.cxx) // don't use this elsewhere !!! #define GF_ROTR 0x03000000 #define GF_ROTMASK 0x03000000 #define GF_UNHINTED 0x04000000 #define GF_GSUB 0x08000000 #define GF_FONTMASK 0xF0000000 #define GF_FONTSHIFT 28 #define GF_DROPPED 0xFFFFFFFF // all positions/widths are in font units // one exception: drawposition is in pixel units class VCL_PLUGIN_PUBLIC SalLayout { public: // used by upper layers Point& DrawBase() { return maDrawBase; } const Point& DrawBase() const { return maDrawBase; } Point& DrawOffset() { return maDrawOffset; } const Point& DrawOffset() const { return maDrawOffset; } Point GetDrawPosition( const Point& rRelative = Point(0,0) ) const; virtual bool LayoutText( ImplLayoutArgs& ) = 0; // first step of layouting virtual void AdjustLayout( ImplLayoutArgs& ); // adjusting after fallback etc. virtual void InitFont() const {} virtual void DrawText( SalGraphics& ) const = 0; int GetUnitsPerPixel() const { return mnUnitsPerPixel; } int GetOrientation() const { return mnOrientation; } virtual const ImplFontData* GetFallbackFontData( sal_GlyphId ) const; // methods using string indexing virtual int GetTextBreak( long nMaxWidth, long nCharExtra=0, int nFactor=1 ) const = 0; virtual long FillDXArray( sal_Int32* pDXArray ) const = 0; virtual long GetTextWidth() const { return FillDXArray( NULL ); } virtual void GetCaretPositions( int nArraySize, sal_Int32* pCaretXArray ) const = 0; virtual bool IsKashidaPosValid ( int /*nCharPos*/ ) const { return true; } // i60594 // methods using glyph indexing virtual int GetNextGlyphs( int nLen, sal_GlyphId* pGlyphIdAry, Point& rPos, int&, sal_Int32* pGlyphAdvAry = NULL, int* pCharPosAry = NULL ) const = 0; virtual bool GetOutline( SalGraphics&, ::basegfx::B2DPolyPolygonVector& ) const; virtual bool GetBoundRect( SalGraphics&, Rectangle& ) const; virtual bool IsSpacingGlyph( sal_GlyphId ) const; // reference counting void Release() const; // used by glyph+font+script fallback virtual void MoveGlyph( int nStart, long nNewXPos ) = 0; virtual void DropGlyph( int nStart ) = 0; virtual void Simplify( bool bIsBase ) = 0; virtual void DisableGlyphInjection( bool /*bDisable*/ ) {} protected: // used by layout engines SalLayout(); virtual ~SalLayout(); // used by layout layers void SetUnitsPerPixel( int n ) { mnUnitsPerPixel = n; } void SetOrientation( int nOrientation ) // in 0-3600 system { mnOrientation = nOrientation; } static int CalcAsianKerning( sal_UCS4, bool bLeft, bool bVertical ); private: // enforce proper copy semantic SAL_DLLPRIVATE SalLayout( const SalLayout& ); SAL_DLLPRIVATE SalLayout& operator=( const SalLayout& ); protected: int mnMinCharPos; int mnEndCharPos; int mnLayoutFlags; int mnUnitsPerPixel; int mnOrientation; mutable int mnRefCount; mutable Point maDrawOffset; Point maDrawBase; }; // ------------------ // - MultiSalLayout - // ------------------ class VCL_PLUGIN_PUBLIC MultiSalLayout : public SalLayout { public: virtual void DrawText( SalGraphics& ) const; virtual int GetTextBreak( long nMaxWidth, long nCharExtra, int nFactor ) const; virtual long FillDXArray( sal_Int32* pDXArray ) const; virtual void GetCaretPositions( int nArraySize, sal_Int32* pCaretXArray ) const; virtual int GetNextGlyphs( int nLen, sal_GlyphId* pGlyphIdxAry, Point& rPos, int&, sal_Int32* pGlyphAdvAry, int* pCharPosAry ) const; virtual bool GetOutline( SalGraphics&, ::basegfx::B2DPolyPolygonVector& ) const; virtual bool GetBoundRect( SalGraphics&, Rectangle& ) const; // used only by OutputDevice::ImplLayout, TODO: make friend explicit MultiSalLayout( SalLayout& rBaseLayout, const ImplFontData* pBaseFont = NULL ); virtual bool AddFallback( SalLayout& rFallbackLayout, ImplLayoutRuns&, const ImplFontData* pFallbackFont ); virtual bool LayoutText( ImplLayoutArgs& ); virtual void AdjustLayout( ImplLayoutArgs& ); virtual void InitFont() const; virtual const ImplFontData* GetFallbackFontData( sal_GlyphId ) const; void SetInComplete(bool bInComplete = true); protected: virtual ~MultiSalLayout(); private: // dummy implementations virtual void MoveGlyph( int, long ) {} virtual void DropGlyph( int ) {} virtual void Simplify( bool ) {} // enforce proper copy semantic SAL_DLLPRIVATE MultiSalLayout( const MultiSalLayout& ); SAL_DLLPRIVATE MultiSalLayout& operator=( const MultiSalLayout& ); private: SalLayout* mpLayouts[ MAX_FALLBACK ]; const ImplFontData* mpFallbackFonts[ MAX_FALLBACK ]; ImplLayoutRuns maFallbackRuns[ MAX_FALLBACK ]; int mnLevel; bool mbInComplete; }; // -------------------- // - GenericSalLayout - // -------------------- struct GlyphItem { int mnFlags; int mnCharPos; // index in string int mnOrigWidth; // original glyph width int mnNewWidth; // width after adjustments sal_GlyphId mnGlyphIndex; Point maLinearPos; // absolute position of non rotated string public: GlyphItem() {} GlyphItem( int nCharPos, sal_GlyphId nGlyphIndex, const Point& rLinearPos, long nFlags, int nOrigWidth ) : mnFlags(nFlags), mnCharPos(nCharPos), mnOrigWidth(nOrigWidth), mnNewWidth(nOrigWidth), mnGlyphIndex(nGlyphIndex), maLinearPos(rLinearPos) {} enum{ FALLBACK_MASK=0xFF, IS_IN_CLUSTER=0x100, IS_RTL_GLYPH=0x200, IS_DIACRITIC=0x400 }; bool IsClusterStart() const { return ((mnFlags & IS_IN_CLUSTER) == 0); } bool IsRTLGlyph() const { return ((mnFlags & IS_RTL_GLYPH) != 0); } bool IsDiacritic() const { return ((mnFlags & IS_DIACRITIC) != 0); } }; // --------------- typedef std::list GlyphList; typedef std::vector GlyphVector; // --------------- class VCL_PLUGIN_PUBLIC GenericSalLayout : public SalLayout { public: // used by layout engines void AppendGlyph( const GlyphItem& ); virtual void AdjustLayout( ImplLayoutArgs& ); virtual void ApplyDXArray( ImplLayoutArgs& ); virtual void Justify( long nNewWidth ); void KashidaJustify( long nIndex, int nWidth ); void ApplyAsianKerning( const sal_Unicode*, int nLength ); void SortGlyphItems(); // used by upper layers virtual long GetTextWidth() const; virtual long FillDXArray( sal_Int32* pDXArray ) const; virtual int GetTextBreak( long nMaxWidth, long nCharExtra, int nFactor ) const; virtual void GetCaretPositions( int nArraySize, sal_Int32* pCaretXArray ) const; // used by display layers virtual int GetNextGlyphs( int nLen, sal_GlyphId* pGlyphIdxAry, Point& rPos, int&, sal_Int32* pGlyphAdvAry = NULL, int* pCharPosAry = NULL ) const; protected: GenericSalLayout(); virtual ~GenericSalLayout(); // for glyph+font+script fallback virtual void MoveGlyph( int nStart, long nNewXPos ); virtual void DropGlyph( int nStart ); virtual void Simplify( bool bIsBase ); bool GetCharWidths( sal_Int32* pCharWidths ) const; private: GlyphItem* mpGlyphItems; // TODO: change to GlyphList int mnGlyphCount; int mnGlyphCapacity; mutable Point maBasePoint; // enforce proper copy semantic SAL_DLLPRIVATE GenericSalLayout( const GenericSalLayout& ); SAL_DLLPRIVATE GenericSalLayout& operator=( const GenericSalLayout& ); }; #undef SalGraphics #endif // _SV_SALLAYOUT_HXX /* vim:set shiftwidth=4 softtabstop=4 expandtab: */