KD Chart 2  [rev.2.6]
KDChartZoomParameters.h
Go to the documentation of this file.
1 /****************************************************************************
2 ** Copyright (C) 2001-2019 Klaralvdalens Datakonsult AB. All rights reserved.
3 **
4 ** This file is part of the KD Chart library.
5 **
6 ** Licensees holding valid commercial KD Chart licenses may use this file in
7 ** accordance with the KD Chart Commercial License Agreement provided with
8 ** the Software.
9 **
10 **
11 ** This file may be distributed and/or modified under the terms of the
12 ** GNU General Public License version 2 and version 3 as published by the
13 ** Free Software Foundation and appearing in the file LICENSE.GPL.txt included.
14 **
15 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
17 **
18 ** Contact info@kdab.com if any conditions of this licensing are not
19 ** clear to you.
20 **
21 **********************************************************************/
22 
23 #ifndef ZOOMPARAMETERS_H
24 #define ZOOMPARAMETERS_H
25 
26 //
27 // W A R N I N G
28 // -------------
29 //
30 // This file is not part of the KD Chart API. It exists purely as an
31 // implementation detail. This header file may change from version to
32 // version without notice, or even be removed.
33 //
34 // We mean it.
35 //
36 
37 #include <QPointF>
38 
39 namespace KDChart {
45  public:
47  : xFactor( 1.0 ),
48  yFactor( 1.0 ),
49  xCenter( 0.5 ),
50  yCenter( 0.5)
51  {
52  }
53 
54  ZoomParameters( qreal xFactor, qreal yFactor, const QPointF& center )
55  : xFactor( xFactor ),
56  yFactor( yFactor ),
57  xCenter( center.x() ),
58  yCenter( center.y() )
59  {
60  }
61 
62  void setCenter( const QPointF& center )
63  {
64  xCenter = center.x();
65  yCenter = center.y();
66  }
67  const QPointF center() const
68  {
69  return QPointF( xCenter, yCenter );
70  }
71 
72  qreal xFactor;
73  qreal yFactor;
74 
75  qreal xCenter;
76  qreal yCenter;
77  };
78 }
79 
80 #endif
ZoomParameters stores the center and the factor of zooming internally.
const QPointF center() const
ZoomParameters(qreal xFactor, qreal yFactor, const QPointF &center)
void setCenter(const QPointF &center)

Klarälvdalens Datakonsult AB (KDAB)
Qt-related services and products
https://www.kdab.com/
https://www.kdab.com/products/kd-chart/