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Diffstat (limited to 'sdext/source/pdfimport/tree/genericelements.hxx')
| -rw-r--r-- | sdext/source/pdfimport/tree/genericelements.hxx | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/sdext/source/pdfimport/tree/genericelements.hxx b/sdext/source/pdfimport/tree/genericelements.hxx new file mode 100644 index 000000000000..b2122a6c7cc2 --- /dev/null +++ b/sdext/source/pdfimport/tree/genericelements.hxx @@ -0,0 +1,326 @@ +/* -*- 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 INCLUDED_PDFI_GENERICELEMENTS_HXX +#define INCLUDED_PDFI_GENERICELEMENTS_HXX + +#include "pdfihelper.hxx" +#include "treevisiting.hxx" + +#include <com/sun/star/task/XStatusIndicator.hpp> +#include <com/sun/star/uno/XComponentContext.hpp> +#include <basegfx/polygon/b2dpolypolygon.hxx> +#include <basegfx/range/b2drange.hxx> +#include <rtl/ustring.hxx> +#include <rtl/ustrbuf.hxx> + +#include <list> + +namespace pdfi +{ + class XmlEmitter; + class StyleContainer; + class ImageContainer; + class PDFIProcessor; + class ElementFactory; + + + struct EmitContext + { + EmitContext( + XmlEmitter& _rEmitter, + StyleContainer& _rStyles, + ImageContainer& _rImages, + PDFIProcessor& _rProcessor, + const com::sun::star::uno::Reference< + com::sun::star::task::XStatusIndicator>& _xStatusIndicator, + com::sun::star::uno::Reference< com::sun::star::uno::XComponentContext > xContext) + : + rEmitter(_rEmitter), + rStyles(_rStyles), + rImages(_rImages), + rProcessor(_rProcessor), + xStatusIndicator(_xStatusIndicator), + m_xContext(xContext) + {} + + XmlEmitter& rEmitter; + StyleContainer& rStyles; + ImageContainer& rImages; + PDFIProcessor& rProcessor; + com::sun::star::uno::Reference< + com::sun::star::task::XStatusIndicator> xStatusIndicator; + com::sun::star::uno::Reference< + com::sun::star::uno::XComponentContext > m_xContext; + }; + + struct Element : public ElementTreeVisitable + { + protected: + Element( Element* pParent ) + : x( 0 ), y( 0 ), w( 0 ), h( 0 ), StyleId( -1 ), Parent( pParent ) + { + if( pParent ) + pParent->Children.push_back( this ); + } + + public: + virtual ~Element(); + + /// Apply visitor to all children + void applyToChildren( ElementTreeVisitor& ); + /// Union element geometry with given element + void updateGeometryWith( const Element* pMergeFrom ); + +#if OSL_DEBUG_LEVEL > 1 + // xxx refac TODO: move code to visitor + virtual void emitStructure( int nLevel ); +#endif + /** el must be a valid dereferencable iterator of el->Parent->Children + pNewParent must not be NULL + */ + static void setParent( std::list<Element*>::iterator& el, Element* pNewParent ); + + double x, y, w, h; + sal_Int32 StyleId; + Element* Parent; + std::list<Element*> Children; + }; + + struct ListElement : public Element + { + ListElement() : Element( NULL ) {} + // ElementTreeVisitable + virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& ); + }; + + struct HyperlinkElement : public Element + { + friend class ElementFactory; + protected: + HyperlinkElement( Element* pParent, const rtl::OUString& rURI ) + : Element( pParent ), URI( rURI ) {} + public: + // ElementTreeVisitable + virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& ); + + rtl::OUString URI; + }; + + struct GraphicalElement : public Element + { + protected: + GraphicalElement( Element* pParent, sal_Int32 nGCId ) + : Element( pParent ), GCId( nGCId ), MirrorVertical( false ) {} + + public: + sal_Int32 GCId; + bool MirrorVertical; + }; + + struct DrawElement : public GraphicalElement + { + protected: + DrawElement( Element* pParent, sal_Int32 nGCId ) + : GraphicalElement( pParent, nGCId ), isCharacter(false), ZOrder(0) {} + + public: + bool isCharacter; + sal_Int32 ZOrder; + }; + + struct FrameElement : public DrawElement + { + friend class ElementFactory; + protected: + FrameElement( Element* pParent, sal_Int32 nGCId ) + : DrawElement( pParent, nGCId ) {} + + public: + // ElementTreeVisitable + virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& ); + }; + + struct TextElement : public GraphicalElement + { + friend class ElementFactory; + protected: + TextElement( Element* pParent, sal_Int32 nGCId, sal_Int32 nFontId ) + : GraphicalElement( pParent, nGCId ), FontId( nFontId ) {} + + public: + // ElementTreeVisitable + virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& ); + + rtl::OUStringBuffer Text; + sal_Int32 FontId; + }; + + struct ParagraphElement : public Element + { + friend class ElementFactory; + protected: + ParagraphElement( Element* pParent ) : Element( pParent ), Type( Normal ), bRtl( false ) {} + + public: + // ElementTreeVisitable + virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& rParentIt ); + + // returns true only if only a single line is contained + bool isSingleLined( PDFIProcessor& rProc ) const; + // returns the highest line height of the contained textelements + // line height is font height if the text element is itself multilined + double getLineHeight( PDFIProcessor& rProc ) const; + // returns the first text element child; does not recurse through subparagraphs + TextElement* getFirstTextChild() const; + + enum ParagraphType { Normal, Headline }; + ParagraphType Type; + bool bRtl; + }; + + struct PolyPolyElement : public DrawElement + { + friend class ElementFactory; + protected: + PolyPolyElement( Element* pParent, sal_Int32 nGCId, + const basegfx::B2DPolyPolygon& rPolyPoly, + sal_Int8 nAction ); + public: + // ElementTreeVisitable + virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& rParentIt ); + + void updateGeometry(); + +#if OSL_DEBUG_LEVEL > 1 + virtual void emitStructure( int nLevel ); +#endif + + basegfx::B2DPolyPolygon PolyPoly; + sal_Int8 Action; + }; + + struct ImageElement : public DrawElement + { + friend class ElementFactory; + protected: + ImageElement( Element* pParent, sal_Int32 nGCId, ImageId nImage ) + : DrawElement( pParent, nGCId ), Image( nImage ) {} + + public: + // ElementTreeVisitable + virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& ); + + ImageId Image; + }; + + struct PageElement : public Element + { + friend class ElementFactory; + protected: + PageElement( Element* pParent, sal_Int32 nPageNr ) + : Element( pParent ), PageNumber( nPageNr ), Hyperlinks(), + TopMargin( 0.0 ), BottomMargin( 0.0 ), LeftMargin( 0.0 ), RightMargin( 0.0 ), + HeaderElement( NULL ), FooterElement( NULL ) + {} + private: + // helper method for resolveHyperlinks + bool resolveHyperlink( std::list<Element*>::iterator link_it, std::list<Element*>& rElements ); + public: + virtual ~PageElement(); + + // ElementTreeVisitable + virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& rParentIt ); + + void emitPageAnchoredElements( EmitContext& rEmitContext ); + static void updateParagraphGeometry( Element* pEle ); + void resolveHyperlinks(); + void resolveFontStyles( PDFIProcessor& rProc ); + void resolveUnderlines( PDFIProcessor& rProc ); + + sal_Int32 PageNumber; + ListElement Hyperlinks; // contains not yet realized links on this page + double TopMargin; + double BottomMargin; + double LeftMargin; + double RightMargin; + Element* HeaderElement; + Element* FooterElement; + }; + + struct DocumentElement : public Element + { + friend class ElementFactory; + protected: + DocumentElement() : Element( NULL ) {} + public: + virtual ~DocumentElement(); + + // ElementTreeVisitable + virtual void visitedBy( ElementTreeVisitor&, const std::list< Element* >::const_iterator& ); + + }; + + // this class is the differentiator of document types: it will create + // Element objects with an optimize() method suitable for the document type + class ElementFactory + { + public: + ElementFactory() {} + virtual ~ElementFactory(); + + virtual HyperlinkElement* createHyperlinkElement( Element* pParent, const rtl::OUString& rURI ) + { return new HyperlinkElement( pParent, rURI ); } + + virtual TextElement* createTextElement( Element* pParent, sal_Int32 nGCId, sal_Int32 nFontId ) + { return new TextElement( pParent, nGCId, nFontId ); } + virtual ParagraphElement* createParagraphElement( Element* pParent ) + { return new ParagraphElement( pParent ); } + + virtual FrameElement* createFrameElement( Element* pParent, sal_Int32 nGCId ) + { return new FrameElement( pParent, nGCId ); } + virtual PolyPolyElement* + createPolyPolyElement( Element* pParent, + sal_Int32 nGCId, + const basegfx::B2DPolyPolygon& rPolyPoly, + sal_Int8 nAction) + { return new PolyPolyElement( pParent, nGCId, rPolyPoly, nAction ); } + virtual ImageElement* createImageElement( Element* pParent, sal_Int32 nGCId, ImageId nImage ) + { return new ImageElement( pParent, nGCId, nImage ); } + + virtual PageElement* createPageElement( Element* pParent, + sal_Int32 nPageNr ) + { return new PageElement( pParent, nPageNr ); } + virtual DocumentElement* createDocumentElement() + { return new DocumentElement(); } + }; +} + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |