File indexing completed on 2024-05-12 15:54:20

0001 /*
0002  * Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB.  All rights reserved.
0003  *
0004  * This file is part of the KD Chart library.
0005  *
0006  * This program is free software; you can redistribute it and/or
0007  * modify it under the terms of the GNU General Public License as
0008  * published by the Free Software Foundation; either version 2 of
0009  * the License, or (at your option) any later version.
0010  *
0011  * This program is distributed in the hope that it will be useful,
0012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
0013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
0014  * GNU General Public License for more details.
0015  *
0016  * You should have received a copy of the GNU General Public License
0017  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
0018  */
0019 
0020 #ifndef ZOOMPARAMETERS_H
0021 #define ZOOMPARAMETERS_H
0022 
0023 //
0024 //  W A R N I N G
0025 //  -------------
0026 //
0027 // This file is not part of the KD Chart API.  It exists purely as an
0028 // implementation detail.  This header file may change from version to
0029 // version without notice, or even be removed.
0030 //
0031 // We mean it.
0032 //
0033 
0034 namespace KChart {
0035     /**
0036       * ZoomParameters stores the center and the factor of zooming internally
0037       * \internal
0038       */
0039     class ZoomParameters {
0040     public:
0041         ZoomParameters()
0042         : xFactor( 1.0 ),
0043           yFactor( 1.0 ),
0044           xCenter( 0.5 ),
0045           yCenter( 0.5)
0046         {
0047         }
0048 
0049         ZoomParameters( qreal xFactor, qreal yFactor, const QPointF& center )
0050         : xFactor( xFactor ),
0051           yFactor( yFactor ),
0052           xCenter( center.x() ),
0053           yCenter( center.y() )
0054         {
0055         }
0056 
0057         void setCenter( const QPointF& center )
0058         {
0059             xCenter = center.x();
0060             yCenter = center.y();
0061         }
0062         const QPointF center() const
0063         {
0064             return QPointF( xCenter, yCenter );
0065         }
0066 
0067         qreal xFactor;
0068         qreal yFactor;
0069 
0070         qreal xCenter;
0071         qreal yCenter;
0072     };
0073 }
0074 
0075 #endif