00001 /* 00002 * Copyright (C) 2008. PARP Research Group. 00003 * <http://perception.inf.um.es> 00004 * University of Murcia, Spain. 00005 * 00006 * This file is part of the QVision library. 00007 * 00008 * QVision is free software: you can redistribute it and/or modify 00009 * it under the terms of the GNU Lesser General Public License as 00010 * published by the Free Software Foundation, version 3 of the License. 00011 * 00012 * QVision is distributed in the hope that it will be useful, 00013 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00015 * GNU Lesser General Public License for more details. 00016 * 00017 * You should have received a copy of the GNU Lesser General Public 00018 * License along with QVision. If not, see <http://www.gnu.org/licenses/>. 00019 */ 00020 00021 00022 #include <QtGui> 00023 #include <cmath> 00024 00025 #include "slateview.h" 00026 00027 SlateView::SlateView(QWidget *parent) 00028 : QGraphicsView(parent) 00029 { 00030 setDragMode(ScrollHandDrag); 00031 } 00032 00033 void SlateView::wheelEvent(QWheelEvent *event) 00034 { 00035 double numDegrees = -event->delta() / 8.0; 00036 double numSteps = numDegrees / 15.0; 00037 double factor = std::pow(1.125, numSteps); 00038 00039 // event.x(); 00040 // event.y(); 00041 // event.globalX(); 00042 // event.globalY(); 00043 00044 scale(factor, factor); 00045 // translate(event->globalX(), event->globalX()); 00046 // rotate(5); 00047 } 00048