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Diffstat (limited to 'vcl/win/source/gdi/winlayout.hxx')
| -rw-r--r-- | vcl/win/source/gdi/winlayout.hxx | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/vcl/win/source/gdi/winlayout.hxx b/vcl/win/source/gdi/winlayout.hxx new file mode 100644 index 000000000000..b96e9eab6427 --- /dev/null +++ b/vcl/win/source/gdi/winlayout.hxx @@ -0,0 +1,221 @@ +/* -*- 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_WIN_SOURCE_GDI_WINLAYOUT_HXX +#define INCLUDED_VCL_WIN_SOURCE_GDI_WINLAYOUT_HXX + +#include <rtl/ustring.hxx> + +#include <sallayout.hxx> +#include <svsys.h> +#include <win/salgdi.h> + +#include <usp10.h> + +// Graphite headers +#include <config_graphite.h> +#if ENABLE_GRAPHITE +#include <graphite_layout.hxx> +#endif + +class ImplWinFontEntry; +struct VisualItem; + +class WinLayout : public SalLayout +{ +public: + WinLayout( HDC, const ImplWinFontData&, ImplWinFontEntry& ); + virtual void InitFont() const; + void SetFontScale( float f ) { mfFontScale = f; } + HFONT DisableFontScaling( void) const; + + SCRIPT_CACHE& GetScriptCache() const; + +protected: + HDC mhDC; // WIN32 device handle + HFONT mhFont; // WIN32 font handle + int mnBaseAdv; // x-offset relative to Layout origin + float mfFontScale; // allows metrics emulation of huge font sizes + + const ImplWinFontData& mrWinFontData; + ImplWinFontEntry& mrWinFontEntry; +}; + +class SimpleWinLayout : public WinLayout +{ +public: + SimpleWinLayout( HDC, BYTE nCharSet, const ImplWinFontData&, ImplWinFontEntry& ); + virtual ~SimpleWinLayout(); + + virtual bool LayoutText( ImplLayoutArgs& ); + virtual void AdjustLayout( ImplLayoutArgs& ); + virtual void DrawText( SalGraphics& ) const; + + virtual int GetNextGlyphs( int nLen, sal_GlyphId* pGlyphs, Point& rPos, int&, + DeviceCoordinate* pGlyphAdvances, int* pCharIndexes, + const PhysicalFontFace** pFallbackFonts = NULL ) const; + + virtual DeviceCoordinate FillDXArray( DeviceCoordinate* pDXArray ) const; + virtual sal_Int32 GetTextBreak(DeviceCoordinate nMaxWidth, DeviceCoordinate nCharExtra, int nFactor) const SAL_OVERRIDE; + virtual void GetCaretPositions( int nArraySize, long* pCaretXArray ) const; + + // for glyph+font+script fallback + virtual void MoveGlyph( int nStart, long nNewXPos ); + virtual void DropGlyph( int nStart ); + virtual void Simplify( bool bIsBase ); + +protected: + void Justify( DeviceCoordinate nNewWidth ); + void ApplyDXArray( const ImplLayoutArgs& ); + +private: + int mnGlyphCount; + int mnCharCount; + WCHAR* mpOutGlyphs; + int* mpGlyphAdvances; // if possible this is shared with mpGlyphAdvances[] + int* mpGlyphOrigAdvs; + int* mpCharWidths; // map rel char pos to char width + int* mpChars2Glyphs; // map rel char pos to abs glyph pos + int* mpGlyphs2Chars; // map abs glyph pos to abs char pos + bool* mpGlyphRTLFlags; // BiDi status for glyphs: true=>RTL + mutable long mnWidth; + bool mbDisableGlyphs; + + int mnNotdefWidth; + BYTE mnCharSet; +}; + +class UniscribeLayout : public WinLayout +{ +public: + UniscribeLayout( HDC, const ImplWinFontData&, ImplWinFontEntry& ); + + virtual bool LayoutText( ImplLayoutArgs& ); + virtual void AdjustLayout( ImplLayoutArgs& ); + virtual void DrawText( SalGraphics& ) const; + virtual int GetNextGlyphs( int nLen, sal_GlyphId* pGlyphs, Point& rPos, int&, + DeviceCoordinate* pGlyphAdvances, int* pCharPosAry, + const PhysicalFontFace** pFallbackFonts = NULL ) const; + + virtual DeviceCoordinate FillDXArray( DeviceCoordinate* pDXArray ) const; + virtual sal_Int32 GetTextBreak(DeviceCoordinate nMaxWidth, DeviceCoordinate nCharExtra, int nFactor) const SAL_OVERRIDE; + virtual void GetCaretPositions( int nArraySize, long* pCaretXArray ) const; + virtual bool IsKashidaPosValid ( int nCharPos ) const; + + // for glyph+font+script fallback + virtual void MoveGlyph( int nStart, long nNewXPos ); + virtual void DropGlyph( int nStart ); + virtual void Simplify( bool bIsBase ); + virtual void DisableGlyphInjection( bool bDisable ) { mbDisableGlyphInjection = bDisable; } + +protected: + virtual ~UniscribeLayout(); + + void Justify( DeviceCoordinate nNewWidth ); + void ApplyDXArray( const ImplLayoutArgs& ); + + bool GetItemSubrange( const VisualItem&, + int& rMinIndex, int& rEndIndex ) const; + +private: + // item specific info + SCRIPT_ITEM* mpScriptItems; // in logical order + VisualItem* mpVisualItems; // in visual order + int mnItemCount; // number of visual items + + // string specific info + // everything is in logical order + int mnCharCapacity; + WORD* mpLogClusters; // map from absolute_char_pos to relative_glyph_pos + int* mpCharWidths; // map from absolute_char_pos to char_width + int mnSubStringMin; // char_pos of first char in context + + // glyph specific info + // everything is in visual order + int mnGlyphCount; + int mnGlyphCapacity; + int* mpGlyphAdvances; // glyph advance width before justification + int* mpJustifications; // glyph advance width after justification + WORD* mpOutGlyphs; // glyphids in visual order + GOFFSET* mpGlyphOffsets; // glyph offsets to the "naive" layout + SCRIPT_VISATTR* mpVisualAttrs; // glyph visual attributes + mutable int* mpGlyphs2Chars; // map from absolute_glyph_pos to absolute_char_pos + + // kashida stuff + void InitKashidaHandling(); + void KashidaItemFix( int nMinGlyphPos, int nEndGlyphPos ); + bool KashidaWordFix( int nMinGlyphPos, int nEndGlyphPos, int* pnCurrentPos ); + + int mnMinKashidaWidth; + int mnMinKashidaGlyph; + bool mbDisableGlyphInjection; +}; + +#if ENABLE_GRAPHITE + +class GraphiteLayoutWinImpl : public GraphiteLayout +{ +public: + GraphiteLayoutWinImpl(const gr_face * pFace, ImplWinFontEntry & rFont) + throw() + : GraphiteLayout(pFace), mrFont(rFont) {}; + virtual ~GraphiteLayoutWinImpl() throw() {}; + virtual sal_GlyphId getKashidaGlyph(int & rWidth); +private: + ImplWinFontEntry & mrFont; +}; + +/// This class uses the SIL Graphite engine to provide complex text layout services to the VCL +class GraphiteWinLayout : public WinLayout +{ +private: + gr_font * mpFont; + grutils::GrFeatureParser * mpFeatures; + mutable GraphiteLayoutWinImpl maImpl; +public: + GraphiteWinLayout(HDC hDC, const ImplWinFontData& rWFD, ImplWinFontEntry& rWFE) throw(); + virtual ~GraphiteWinLayout(); + + // used by upper layers + virtual bool LayoutText( ImplLayoutArgs& ); // first step of layout + virtual void AdjustLayout( ImplLayoutArgs& ); // adjusting after fallback etc. + virtual void DrawText( SalGraphics& ) const; + + // methods using string indexing + virtual sal_Int32 GetTextBreak(DeviceCoordinate nMaxWidth, DeviceCoordinate nCharExtra=0, int nFactor=1) const SAL_OVERRIDE; + virtual DeviceCoordinate FillDXArray( DeviceCoordinate* pDXArray ) const; + + virtual void GetCaretPositions( int nArraySize, long* pCaretXArray ) const; + + // methods using glyph indexing + virtual int GetNextGlyphs(int nLen, sal_GlyphId* pGlyphIdxAry, ::Point & rPos, int&, + DeviceCoordinate* pGlyphAdvAry = NULL, int* pCharPosAry = NULL, + const PhysicalFontFace** pFallbackFonts = NULL ) const; + + // used by glyph+font+script fallback + virtual void MoveGlyph( int nStart, long nNewXPos ); + virtual void DropGlyph( int nStart ); + virtual void Simplify( bool bIsBase ); +}; + +#endif // ENABLE_GRAPHITE + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |