KChart

ReverseMapper.h
1 /*
2  * Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
3  *
4  * This file is part of the KD Chart library.
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License as
8  * published by the Free Software Foundation; either version 2 of
9  * the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program. If not, see <https://www.gnu.org/licenses/>.
18  */
19 
20 #ifndef REVERSEMAPPER_H
21 #define REVERSEMAPPER_H
22 
23 #include <QModelIndex>
24 #include <QHash>
25 
26 QT_BEGIN_NAMESPACE
27 class QRectF;
28 class QGraphicsScene;
29 class QPolygonF;
30 QT_END_NAMESPACE
31 
32 namespace KChart {
33 
34  class AbstractDiagram;
35  class ChartGraphicsItem;
36 
42  {
43 
44  public:
45  ReverseMapper();
46  explicit ReverseMapper( AbstractDiagram* diagram );
47 
48  ~ReverseMapper();
49 
50  void setDiagram( AbstractDiagram* diagram );
51 
52  void clear();
53 
54  QModelIndexList indexesAt( const QPointF& point ) const;
55  QModelIndexList indexesIn( const QRect& rect ) const;
56 
57  QPolygonF polygon( int row, int column ) const;
58  QRectF boundingRect( int row, int column ) const;
59 
60  void addItem( ChartGraphicsItem* item );
61 
62  // convenience methods:
63  void addPolygon( int row, int column, const QPolygonF& polygon );
64  void addRect( int row, int column, const QRectF& rect );
65  void addCircle( int row, int column, const QPointF& location, const QSizeF& diameter );
66  void addLine( int row, int column, const QPointF& from, const QPointF& to );
67 
68  private:
69  QGraphicsScene* m_scene;
70  AbstractDiagram* m_diagram;
72  };
73 
74 }
75 
76 #endif
AbstractDiagram defines the interface for diagram classes.
Graphics item used inside of the ReverseMapper.
The ReverseMapper stores information about objects on a chart and their respective model indexes...
Definition: ReverseMapper.h:41
Global namespace.
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