KD Chart 2 [rev.2.4]
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00001 /**************************************************************************** 00002 ** Copyright (C) 2001-2012 Klaralvdalens Datakonsult AB. All rights reserved. 00003 ** 00004 ** This file is part of the KD Chart library. 00005 ** 00006 ** Licensees holding valid commercial KD Chart licenses may use this file in 00007 ** accordance with the KD Chart Commercial License Agreement provided with 00008 ** the Software. 00009 ** 00010 ** 00011 ** This file may be distributed and/or modified under the terms of the 00012 ** GNU General Public License version 2 and version 3 as published by the 00013 ** Free Software Foundation and appearing in the file LICENSE.GPL.txt included. 00014 ** 00015 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE 00016 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 00017 ** 00018 ** Contact info@kdab.com if any conditions of this licensing are not 00019 ** clear to you. 00020 ** 00021 **********************************************************************/ 00022 00023 #ifndef KDGANTTABSTRACTGRID_H 00024 #define KDGANTTABSTRACTGRID_H 00025 00026 #include "kdganttglobal.h" 00027 #include "kdganttconstraint.h" 00028 00029 class QPainter; 00030 class QRectF; 00031 class QAbstractItemModel; 00032 class QModelIndex; 00033 00034 namespace KDGantt { 00035 class AbstractRowController; 00036 class Span; 00037 00038 class KDGANTT_EXPORT AbstractGrid : public QObject { 00039 Q_OBJECT 00040 KDGANTT_DECLARE_PRIVATE_BASE_POLYMORPHIC( AbstractGrid ) 00041 friend class GraphicsScene; 00042 public: 00043 00044 AbstractGrid(QObject* parent = 0); 00045 virtual ~AbstractGrid(); 00046 00047 QAbstractItemModel* model() const; 00048 QModelIndex rootIndex() const; 00049 00050 virtual Span mapToChart( const QModelIndex& idx ) const = 0; 00051 virtual bool mapFromChart( const Span& span, const QModelIndex& idx, 00052 const QList<Constraint>& constraints=QList<Constraint>() ) const = 0; 00053 virtual qreal mapToChart( const QVariant &value ) const; 00054 virtual QVariant mapFromChart( qreal x ) const; 00055 bool isSatisfiedConstraint( const Constraint& c ) const; 00056 00057 virtual void paintGrid( QPainter* painter, const QRectF& sceneRect, const QRectF& exposedRect, 00058 AbstractRowController* rowController = 0, QWidget* widget=0 ) = 0; 00059 virtual void paintHeader( QPainter* painter, const QRectF& headerRect, const QRectF& exposedRect, 00060 qreal offset, QWidget* widget=0 ) = 0; 00061 00062 public Q_SLOTS: 00063 /*internal*/ virtual void setModel( QAbstractItemModel* model ); 00064 /*internal*/ virtual void setRootIndex( const QModelIndex& idx ); 00065 Q_SIGNALS: 00066 void gridChanged(); 00067 00068 protected: 00069 virtual void drawBackground(QPainter* paint, const QRectF& rect); 00070 virtual void drawForeground(QPainter* paint, const QRectF& rect); 00071 }; 00072 } 00073 00074 #endif /* KDGANTTABSTRACTGRID_H */ 00075