File indexing completed on 2024-05-12 16:34:02

0001 /* This file is part of the KDE project
0002    Copyright (C)  2006 Martin Pfeiffer <hubipete@gmx.net>
0003                   2009 Jeremias Epperlein <jeeree@web.de>
0004    This library is free software; you can redistribute it and/or
0005    modify it under the terms of the GNU Library General Public
0006    License as published by the Free Software Foundation; either
0007    version 2 of the License, or (at your option) any later version.
0008 
0009    This library is distributed in the hope that it will be useful,
0010    but WITHOUT ANY WARRANTY; without even the implied warranty of
0011    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0012    Library General Public License for more details.
0013 
0014    You should have received a copy of the GNU Library General Public License
0015    along with this library; see the file COPYING.LIB.  If not, write to
0016    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
0017    Boston, MA 02110-1301, USA.
0018 */
0019 
0020 #ifndef KOFORMULASHAPE_H
0021 #define KOFORMULASHAPE_H
0022 
0023 #include <KoShape.h>
0024 #define KoFormulaShapeId "FormulaShapeID"
0025 #include <KoFrameShape.h>
0026 
0027 class KoStore;
0028 class KoDocumentResourceManager;
0029 class KoOdfLoadingContext;
0030 
0031 class BasicElement;
0032 class FormulaRenderer;
0033 class FormulaData;
0034 class FormulaDocument;
0035 
0036 /**
0037  * @short The flake shape for a formula
0038  *
0039  * This class is basically the container for the formula and has also methods to paint,
0040  * load and save the formula. The formulaRenderer instance that is part of this class
0041  * serves to paint and layout the formula. The actual formula data means the tree of
0042  * elements is accessible through the root element which is constructed and destroyed
0043  * by this class that holds a pointer to it. Everything that goes into the area of
0044  * editing the formula data is implemented in KoFormulaTool respectively FormulaCursor.
0045  *
0046  * @author Martin Pfeiffer <hubipete@gmx.net>
0047  */
0048 class KoFormulaShape : public KoShape, public KoFrameShape {
0049 public:
0050     /// The basic constructor
0051     explicit KoFormulaShape(KoDocumentResourceManager *documentResourceManager);
0052     //KoFormulaShape();
0053 
0054     /// The basic destructor
0055     ~KoFormulaShape() override;
0056 
0057     /// inherited from KoShape
0058     void paint( QPainter &painter, const KoViewConverter &converter, KoShapePaintingContext &paintcontext) override;
0059 
0060     void updateLayout();
0061 
0062     /// @return The element at the point @p p
0063     BasicElement* elementAt( const QPointF& p );
0064 
0065     /// Resize the shape.
0066     void resize( const QSizeF &size );
0067 
0068     /// @return Get the bounding box of the shape.
0069 //     QRectF boundingRect() const;
0070 
0071     /// @return the data shown by the shape
0072     FormulaData* formulaData() const;
0073 
0074     /// @return the formularenderer used to paint this shape
0075     FormulaRenderer* formulaRenderer() const;
0076 
0077     /**
0078      * Load a shape from odf - reimplemented from KoShape
0079      * @param context the KoShapeLoadingContext used for loading
0080      * @param element element which represents the shape in odf
0081      * @return false if loading failed
0082      */
0083     bool loadOdf( const KoXmlElement& element, KoShapeLoadingContext& context ) override;
0084 
0085     bool loadOdfFrameElement(const KoXmlElement& element, KoShapeLoadingContext& context) override;
0086     bool loadOdfEmbedded(const KoXmlElement &mathElement, KoShapeLoadingContext &context);
0087 
0088     /**
0089      * @brief store the shape data as ODF XML. - reimplemented from KoShape
0090      * This is the method that will be called when saving a shape as a described in
0091      * OpenDocument 9.2 Drawing Shapes.
0092      * @see saveOdfAttributes
0093      */
0094     void saveOdf( KoShapeSavingContext& context ) const override;
0095 
0096     KoDocumentResourceManager *resourceManager() const;
0097 
0098 private:
0099     bool loadEmbeddedDocument(KoStore *store,const KoXmlElement &objectElement,
0100                               const KoOdfLoadingContext &odfLoadingContext);
0101 
0102     /// The data this shape displays
0103     FormulaData* m_formulaData;
0104 
0105     /// The renderer that takes care of painting the shape's formula
0106     FormulaRenderer* m_formulaRenderer;
0107 
0108     /// True if this formula is inline, i.e. not embedded in a formula document.
0109     bool m_isInline;
0110 
0111     FormulaDocument *m_document;
0112     KoDocumentResourceManager *m_resourceManager;
0113 };
0114 
0115 #endif // KOFORMULASHAPE_H