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+/* -*- 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_SDEXT_SOURCE_PDFIMPORT_INC_GENERICELEMENTS_HXX
+#define INCLUDED_SDEXT_SOURCE_PDFIMPORT_INC_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 <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 css::uno::Reference<
+ css::task::XStatusIndicator>& _xStatusIndicator,
+ css::uno::Reference< css::uno::XComponentContext > const & xContext)
+ :
+ rEmitter(_rEmitter),
+ rStyles(_rStyles),
+ rImages(_rImages),
+ rProcessor(_rProcessor),
+ xStatusIndicator(_xStatusIndicator),
+ m_xContext(xContext)
+ {}
+
+ XmlEmitter& rEmitter;
+ StyleContainer& rStyles;
+ ImageContainer& rImages;
+ PDFIProcessor& rProcessor;
+ css::uno::Reference<
+ css::task::XStatusIndicator> xStatusIndicator;
+ css::uno::Reference<
+ css::uno::XComponentContext > m_xContext;
+ };
+
+ struct Element
+ {
+ protected:
+ explicit Element( Element* pParent )
+ : x( 0 ), y( 0 ), w( 0 ), h( 0 ), StyleId( -1 ), Parent( pParent )
+ {
+ if( pParent )
+ pParent->Children.emplace_back( this );
+ }
+
+ public:
+ virtual ~Element();
+
+ /**
+ To be implemented by every tree node that needs to be
+ visitable.
+ */
+ virtual void visitedBy( ElementTreeVisitor&, const std::list< std::unique_ptr<Element> >::const_iterator& rParentIt ) = 0;
+ /// Apply visitor to all children
+ void applyToChildren( ElementTreeVisitor& );
+ /// Union element geometry with given element
+ void updateGeometryWith( const Element* pMergeFrom );
+
+#if OSL_DEBUG_LEVEL > 0
+ // xxx refact TODO: move code to visitor
+ virtual void emitStructure( int nLevel );
+#endif
+ /** el must be a valid dereferenceable iterator of el->Parent->Children
+ pNewParent must not be NULL
+ */
+ static void setParent( std::list<std::unique_ptr<Element>>::iterator const & el, Element* pNewParent );
+
+ double x, y, w, h;
+ sal_Int32 StyleId;
+ Element* Parent;
+ std::list<std::unique_ptr<Element>> Children;
+ };
+
+ struct ListElement final : public Element
+ {
+ ListElement() : Element( nullptr ) {}
+ virtual void visitedBy( ElementTreeVisitor&, const std::list< std::unique_ptr<Element> >::const_iterator& ) override;
+ };
+
+ struct HyperlinkElement final : public Element
+ {
+ friend class ElementFactory;
+ HyperlinkElement( Element* pParent, const OUString& rURI )
+ : Element( pParent ), URI( rURI ) {}
+ public:
+ virtual void visitedBy( ElementTreeVisitor&, const std::list< std::unique_ptr<Element> >::const_iterator& ) override;
+
+ OUString URI;
+ };
+
+ struct GraphicalElement : public Element
+ {
+ protected:
+ GraphicalElement(Element* pParent, sal_Int32 nGCId)
+ : Element(pParent)
+ , GCId(nGCId)
+ , MirrorVertical(false)
+ , IsForText(false)
+ , FontSize(0.0)
+ , TextStyleId(0)
+ {
+ }
+
+ public:
+ sal_Int32 GCId;
+ bool MirrorVertical;
+ bool IsForText;
+ double FontSize;
+ sal_Int32 TextStyleId;
+ };
+
+ 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 final : public DrawElement
+ {
+ friend class ElementFactory;
+ FrameElement( Element* pParent, sal_Int32 nGCId )
+ : DrawElement( pParent, nGCId ) {}
+
+ public:
+ virtual void visitedBy( ElementTreeVisitor&, const std::list< std::unique_ptr<Element> >::const_iterator& ) override;
+ };
+
+ struct TextElement final : public GraphicalElement
+ {
+ friend class ElementFactory;
+ TextElement( Element* pParent, sal_Int32 nGCId, sal_Int32 nFontId )
+ : GraphicalElement( pParent, nGCId ), FontId( nFontId ) {}
+
+ public:
+ virtual void visitedBy( ElementTreeVisitor&, const std::list< std::unique_ptr<Element> >::const_iterator& ) override;
+
+ OUStringBuffer Text;
+ sal_Int32 FontId;
+ };
+
+ struct ParagraphElement final : public Element
+ {
+ friend class ElementFactory;
+ explicit ParagraphElement( Element* pParent ) : Element( pParent ), Type( Normal ), bRtl( false ) {}
+
+ public:
+ virtual void visitedBy( ElementTreeVisitor&, const std::list< std::unique_ptr<Element> >::const_iterator& rParentIt ) override;
+
+ // returns true only if only a single line is contained
+ bool isSingleLined( PDFIProcessor const & 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 final : public DrawElement
+ {
+ friend class ElementFactory;
+ PolyPolyElement( Element* pParent, sal_Int32 nGCId,
+ const basegfx::B2DPolyPolygon& rPolyPoly,
+ sal_Int8 nAction );
+ public:
+ virtual void visitedBy( ElementTreeVisitor&, const std::list< std::unique_ptr<Element> >::const_iterator& rParentIt ) override;
+
+ void updateGeometry();
+
+#if OSL_DEBUG_LEVEL > 0
+ virtual void emitStructure( int nLevel ) override;
+#endif
+
+ basegfx::B2DPolyPolygon PolyPoly;
+ sal_Int8 Action;
+ };
+
+ struct ImageElement final : public DrawElement
+ {
+ friend class ElementFactory;
+ ImageElement( Element* pParent, sal_Int32 nGCId, ImageId nImage )
+ : DrawElement( pParent, nGCId ), Image( nImage ) {}
+
+ public:
+ virtual void visitedBy( ElementTreeVisitor&, const std::list< std::unique_ptr<Element> >::const_iterator& ) override;
+
+ ImageId Image;
+ };
+
+ struct PageElement final : public Element
+ {
+ friend class ElementFactory;
+ PageElement( Element* pParent, sal_Int32 nPageNr )
+ : Element( pParent ), PageNumber( nPageNr ), Hyperlinks(),
+ TopMargin( 0.0 ), BottomMargin( 0.0 ), LeftMargin( 0.0 ), RightMargin( 0.0 )
+ {}
+ private:
+ // helper method for resolveHyperlinks
+ bool resolveHyperlink( const std::list<std::unique_ptr<Element>>::iterator& link_it, std::list<std::unique_ptr<Element>>& rElements );
+ public:
+ virtual ~PageElement() override;
+
+ virtual void visitedBy( ElementTreeVisitor&, const std::list< std::unique_ptr<Element> >::const_iterator& rParentIt ) override;
+
+ void resolveHyperlinks();
+ void resolveFontStyles( PDFIProcessor const & rProc );
+ void resolveUnderlines( PDFIProcessor const & rProc );
+
+ sal_Int32 PageNumber;
+ ListElement Hyperlinks; // contains not yet realized links on this page
+ double TopMargin;
+ double BottomMargin;
+ double LeftMargin;
+ double RightMargin;
+ std::unique_ptr<Element> HeaderElement;
+ std::unique_ptr<Element> FooterElement;
+ };
+
+ struct DocumentElement final : public Element
+ {
+ friend class ElementFactory;
+ public:
+ DocumentElement() : Element( nullptr ) {}
+ virtual ~DocumentElement() override;
+
+ virtual void visitedBy( ElementTreeVisitor&, const std::list< std::unique_ptr<Element> >::const_iterator& ) override;
+ };
+
+ // 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() = delete;
+
+ static HyperlinkElement* createHyperlinkElement( Element* pParent, const OUString& rURI )
+ { return new HyperlinkElement( pParent, rURI ); }
+
+ static TextElement* createTextElement( Element* pParent, sal_Int32 nGCId, sal_Int32 nFontId )
+ { return new TextElement( pParent, nGCId, nFontId ); }
+ static ParagraphElement* createParagraphElement( Element* pParent )
+ { return new ParagraphElement( pParent ); }
+
+ static FrameElement* createFrameElement( Element* pParent, sal_Int32 nGCId )
+ { return new FrameElement( pParent, nGCId ); }
+ static PolyPolyElement*
+ createPolyPolyElement( Element* pParent,
+ sal_Int32 nGCId,
+ const basegfx::B2DPolyPolygon& rPolyPoly,
+ sal_Int8 nAction)
+ { return new PolyPolyElement( pParent, nGCId, rPolyPoly, nAction ); }
+ static ImageElement* createImageElement( Element* pParent, sal_Int32 nGCId, ImageId nImage )
+ { return new ImageElement( pParent, nGCId, nImage ); }
+
+ static PageElement* createPageElement( Element* pParent,
+ sal_Int32 nPageNr )
+ { return new PageElement( pParent, nPageNr ); }
+ static std::shared_ptr<DocumentElement> createDocumentElement()
+ { return std::make_shared<DocumentElement>(); }
+ };
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */