libreoffice/sdext/source/pdfimport/tree/pdfiprocessor.hxx

/* -*- 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_PDFI_PROCESSOR_HXX
#define INCLUDED_PDFI_PROCESSOR_HXX

#include <com/sun/star/util/XStringMapping.hpp>
#include <com/sun/star/xml/sax/XDocumentHandler.hpp>
#include <com/sun/star/task/XStatusIndicator.hpp>
#include <com/sun/star/rendering/XVolatileBitmap.hpp>
#include <com/sun/star/geometry/RealSize2D.hpp>
#include <com/sun/star/geometry/RealPoint2D.hpp>
#include <com/sun/star/geometry/RealRectangle2D.hpp>
#include <com/sun/star/geometry/Matrix2D.hpp>

#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/range/b2drange.hxx>

#include <rtl/ustring.hxx>
#include <rtl/ustrbuf.hxx>

#include <boost/shared_ptr.hpp>
#include <list>
#include <boost/unordered_map.hpp>

#include "imagecontainer.hxx"
#include "contentsink.hxx"
#include "treevisitorfactory.hxx"
#include "genericelements.hxx"

namespace pdfi
{

    class  PDFIProcessor;
    struct Element;
    struct DocumentElement;
    struct PageElement;
    class  ElementFactory;
    class  XmlEmitter;
    class  CharGlyph;

    /** Main entry from the parser

        Creates the internal DOM tree from the render calls
     */
    class PDFIProcessor : public ContentSink
    {
    public:
        com::sun::star::uno::Reference<
            com::sun::star::uno::XComponentContext >  m_xContext;
        double fYPrevTextPosition;
        double fPrevTextHeight;
        double fXPrevTextPosition;
        double fPrevTextWidth;
        enum DocumentTextDirecion { LrTb, RlTb, TbLr };

        explicit PDFIProcessor( const com::sun::star::uno::Reference< com::sun::star::task::XStatusIndicator >& xStat,
            com::sun::star::uno::Reference< com::sun::star::uno::XComponentContext > xContext) ;

        /// TEMP - enable writer-like text:p on doc level
        void enableToplevelText();

        void emit( XmlEmitter&               rEmitter,
                   const TreeVisitorFactory& rVisitorFactory );

        sal_Int32 getGCId( const GraphicsContext& rGC );
        const GraphicsContext& getGraphicsContext( sal_Int32 nGCId ) const;
        GraphicsContext& getCurrentContext() { return m_aGCStack.back(); }
        const GraphicsContext& getCurrentContext() const { return m_aGCStack.back(); }

        ImageContainer& getImages() { return m_aImages; }
        boost::shared_ptr<ElementFactory> getElementFactory() const { return m_pElFactory; }

        const com::sun::star::uno::Reference< com::sun::star::task::XStatusIndicator >& getStatusIndicator() const
        { return m_xStatusIndicator; }
        void setStatusIndicator( const com::sun::star::uno::Reference< com::sun::star::task::XStatusIndicator >& xStatus )
        { m_xStatusIndicator = xStatus; }

        const FontAttributes& getFont( sal_Int32 nFontId ) const;
        sal_Int32 getFontId( const FontAttributes& rAttr ) const;

        void sortElements( Element* pElement, bool bDeep = false );

        rtl::OUString mirrorString( const rtl::OUString& i_rInString );

    private:
        void prepareMirrorMap();
        void processGlyphLine();
        void processGlyph(   double       fPreAvarageSpaceValue,
                             CharGlyph&   rGlyph,
                             ParagraphElement* pPara,
                             FrameElement* pFrame,
                             bool         bIsWhiteSpaceInLine );

        void drawGlyphLine( const rtl::OUString&                               rGlyphs,
                            const ::com::sun::star::geometry::RealRectangle2D& rRect,
                            const ::com::sun::star::geometry::Matrix2D&        rFontMatrix  );

        void drawCharGlyphs( rtl::OUString&             rGlyphs,
                             ::com::sun::star::geometry::RealRectangle2D&  rRect,
                             const GraphicsContext& aGC,
                             ParagraphElement* pPara,
                             FrameElement* pFrame,
                             bool bSpaceFlag );

        GraphicsContext& getTransformGlyphContext( CharGlyph& rGlyph );

        // ContentSink interface implementation

        virtual void setPageNum( sal_Int32 nNumPages );
        virtual void startPage( const ::com::sun::star::geometry::RealSize2D& rSize );
        virtual void endPage();

        virtual void hyperLink( const ::com::sun::star::geometry::RealRectangle2D& rBounds,
                                const ::rtl::OUString&                             rURI );
        virtual void pushState();
        virtual void popState();
        virtual void setFlatness( double );
        virtual void setTransformation( const ::com::sun::star::geometry::AffineMatrix2D& rMatrix );
        virtual void setLineDash( const ::com::sun::star::uno::Sequence<double>& dashes,
                                  double                                         start );
        virtual void setLineJoin(sal_Int8);
        virtual void setLineCap(sal_Int8);
        virtual void setMiterLimit(double);
        virtual void setLineWidth(double);
        virtual void setFillColor( const ::com::sun::star::rendering::ARGBColor& rColor );
        virtual void setStrokeColor( const ::com::sun::star::rendering::ARGBColor& rColor );
        virtual void setBlendMode(sal_Int8);
        virtual void setFont( const FontAttributes& rFont );
        virtual void setTextRenderMode( sal_Int32 );

        virtual void strokePath( const ::com::sun::star::uno::Reference<
                                       ::com::sun::star::rendering::XPolyPolygon2D >& rPath );
        virtual void fillPath( const ::com::sun::star::uno::Reference<
                                     ::com::sun::star::rendering::XPolyPolygon2D >& rPath );
        virtual void eoFillPath( const ::com::sun::star::uno::Reference<
                                       ::com::sun::star::rendering::XPolyPolygon2D >& rPath );

        virtual void intersectClip(const ::com::sun::star::uno::Reference<
                                         ::com::sun::star::rendering::XPolyPolygon2D >& rPath);
        virtual void intersectEoClip(const ::com::sun::star::uno::Reference<
                                           ::com::sun::star::rendering::XPolyPolygon2D >& rPath);

        virtual void drawGlyphs( const rtl::OUString&                               rGlyphs,
                                 const ::com::sun::star::geometry::RealRectangle2D& rRect,
                                 const ::com::sun::star::geometry::Matrix2D&        rFontMatrix );
        virtual void endText();

        virtual void drawMask(const ::com::sun::star::uno::Sequence<
                                    ::com::sun::star::beans::PropertyValue>& xBitmap,
                              bool                                           bInvert );
        /// Given image must already be color-mapped and normalized to sRGB.
        virtual void drawImage(const ::com::sun::star::uno::Sequence<
                                     ::com::sun::star::beans::PropertyValue>& xBitmap );
        /** Given image must already be color-mapped and normalized to sRGB.

            maskColors must contain two sequences of color components
         */
        virtual void drawColorMaskedImage(const ::com::sun::star::uno::Sequence<
                                                ::com::sun::star::beans::PropertyValue>& xBitmap,
                                          const ::com::sun::star::uno::Sequence<
                                                ::com::sun::star::uno::Any>&             xMaskColors );
        virtual void drawMaskedImage(const ::com::sun::star::uno::Sequence<
                                           ::com::sun::star::beans::PropertyValue>& xBitmap,
                                     const ::com::sun::star::uno::Sequence<
                                           ::com::sun::star::beans::PropertyValue>& xMask,
                                     bool                                             bInvertMask);
        virtual void drawAlphaMaskedImage(const ::com::sun::star::uno::Sequence<
                                                ::com::sun::star::beans::PropertyValue>& xImage,
                                          const ::com::sun::star::uno::Sequence<
                                                ::com::sun::star::beans::PropertyValue>& xMask);

        /// nElements == -1 means fill in number of pages
        void startIndicator( const rtl::OUString& rText, sal_Int32 nElements = -1 );
        void endIndicator();

        void setupImage(ImageId nImage);

        typedef boost::unordered_map<sal_Int32,FontAttributes> IdToFontMap;
        typedef boost::unordered_map<FontAttributes,sal_Int32,FontAttrHash> FontToIdMap;

        typedef boost::unordered_map<sal_Int32,GraphicsContext> IdToGCMap;
        typedef boost::unordered_map<GraphicsContext,sal_Int32,GraphicsContextHash> GCToIdMap;

        typedef std::vector<GraphicsContext> GraphicsContextStack;

        ::basegfx::B2DRange& calcTransformedRectBounds( ::basegfx::B2DRange&            outRect,
                                                        const ::basegfx::B2DRange&      inRect,
                                                        const ::basegfx::B2DHomMatrix&  transformation );
        std::vector<CharGlyph>             m_GlyphsList;

        boost::shared_ptr<ElementFactory>  m_pElFactory;
        boost::shared_ptr<DocumentElement> m_pDocument;
        PageElement*                       m_pCurPage;
        Element*                           m_pCurElement;
        sal_Int32                          m_nNextFontId;
        IdToFontMap                        m_aIdToFont;
        FontToIdMap                        m_aFontToId;

        GraphicsContextStack               m_aGCStack;
        GraphicsContext                    m_prev_aGC;
        sal_Int32                          m_nNextGCId;
        IdToGCMap                          m_aIdToGC;
        GCToIdMap                          m_aGCToId;

        ImageContainer                     m_aImages;

        DocumentTextDirecion               m_eTextDirection;

        sal_Int32                          m_nPages;
        sal_Int32                          m_nNextZOrder;
        bool                               m_bIsWhiteSpaceInLine;
        com::sun::star::uno::Reference<
            com::sun::star::task::XStatusIndicator >
                                           m_xStatusIndicator;

        bool                               m_bHaveTextOnDocLevel;
        std::vector< sal_Unicode >         m_aMirrorMap;
        com::sun::star::uno::Reference<
            com::sun::star::util::XStringMapping >
                                           m_xMirrorMapper;
        bool                               m_bMirrorMapperTried;
    };
    class CharGlyph
    {
        public:
            CharGlyph(double fXPrevGlyphPosition, double fYPrevGlyphPosition, double fPrevGlyphHeight, double fPrevGlyphWidth,
               Element* pCurElement, const GraphicsContext& rCurrentContext, const com::sun::star::geometry::Matrix2D& rFontMatrix,
               const com::sun::star::geometry::RealRectangle2D& rRect, const rtl::OUString& rGlyphs  )
               : m_fXPrevGlyphPosition(fXPrevGlyphPosition), m_fYPrevGlyphPosition(fYPrevGlyphPosition), m_fPrevGlyphHeight(fPrevGlyphHeight),
                 m_fPrevGlyphWidth(fPrevGlyphWidth), m_pCurElement(pCurElement), m_rCurrentContext(rCurrentContext),
                 m_rFontMatrix(rFontMatrix), m_rRect(rRect), m_rGlyphs(rGlyphs) {};

            virtual ~CharGlyph(){};
            rtl::OUString& getGlyph(){ return m_rGlyphs; }
            com::sun::star::geometry::RealRectangle2D& getRect(){ return m_rRect; }
            com::sun::star::geometry::Matrix2D&  getFontMatrix(){ return m_rFontMatrix; }
            GraphicsContext&  getGC(){ return m_rCurrentContext; }
            Element*  getCurElement(){ return m_pCurElement; }

            double getYPrevGlyphPosition() const { return m_fYPrevGlyphPosition; }
            double getXPrevGlyphPosition() const { return m_fXPrevGlyphPosition; }
            double getPrevGlyphHeight() const { return m_fPrevGlyphHeight; }
            double getPrevGlyphWidth () const { return m_fPrevGlyphWidth; }
            double getPrevGlyphsSpace() const
            {
                if( (m_rRect.X1-m_fXPrevGlyphPosition)<0 )
                    return 0;
                else
                    return m_rRect.X1-m_fXPrevGlyphPosition;
            }

        private:

            double                      m_fXPrevGlyphPosition ;
            double                      m_fYPrevGlyphPosition ;
            double                      m_fPrevGlyphHeight ;
            double                      m_fPrevGlyphWidth ;
            Element*                    m_pCurElement ;
            GraphicsContext             m_rCurrentContext ;
            com::sun::star::geometry::Matrix2D          m_rFontMatrix ;
            com::sun::star::geometry::RealRectangle2D   m_rRect ;
            rtl::OUString               m_rGlyphs ;
    };
}

#endif

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