QVision: Qt's Image, Video and Computer Vision Library

00001 /*
00002  *      Copyright (C) 2008, 2009, 2010, 2011, 2012. 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
src/qvblockprogramming/qvguiblocks/qvdesigner/slate/slateview.cpp
