00001 /*************************************************************************** 00002 ** 00003 ** This file is part of fastmap. 00004 ** 00005 ** This file may be distributed and/or modified under the terms of the 00006 ** GNU General Public License version 2 or 3 as published by the Free 00007 ** Software Foundation and appearing in the file LICENSE.GPL included 00008 ** in the packaging of this file. 00009 ** 00010 ** This file is distributed in the hope that it will be useful, but WITHOUT 00011 ** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00012 ** FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 00013 ** more details. 00014 ** 00015 ** You should have received a copy of the GNU General Public License 00016 ** along with this program. If not, see <http://www.gnu.org/licenses/>. 00017 ** 00018 ** See http://www.geopsy.org for more information. 00019 ** 00020 ** Created : 2008-09-12 00021 ** Authors: 00022 ** Marc Wathelet 00023 ** Marc Wathelet (LGIT, Grenoble, France) 00024 ** 00025 ***************************************************************************/ 00026 00027 #ifndef DRAWVIEW_H 00028 #define DRAWVIEW_H 00029 00030 #include <QtGui> 00031 00032 class DrawScene; 00033 00034 class DrawView : public QGraphicsView 00035 { 00036 Q_OBJECT 00037 public: 00038 DrawView(DrawScene * scene); 00039 ~DrawView(); 00040 00041 DrawScene * scene() const; 00042 00043 enum SnapOption {NoSnap=0, SnapX=1, SnapY=2}; 00044 Q_DECLARE_FLAGS(SnapOptions, SnapOption) 00045 enum SnapType {SnapNodes, SnapGrid, SnapContours}; 00046 00047 void setSnapOption(SnapOptions ms) {_snapOption=ms;} 00048 SnapOptions snapOption() const {return _snapOption;} 00049 00050 void setSnapType(SnapType ms) {_snapType=ms;} 00051 SnapType snapType() const {return _snapType;} 00052 00053 void setMousePoint(const QPointF& p); 00054 signals: 00055 void mouseMoved(const QPointF& p); 00056 void mouseReleased(const QPointF& p); 00057 protected: 00058 virtual void wheelEvent(QWheelEvent * e); 00059 virtual void mouseMoveEvent(QMouseEvent * e); 00060 virtual void mouseReleaseEvent(QMouseEvent * e); 00061 virtual void drawBackground(QPainter * painter, const QRectF & rect); 00062 virtual void drawForeground(QPainter * painter, const QRectF & rect); 00063 private: 00064 void autoTicks(qreal delta, qreal& majorTicks, qreal& minorTicks); 00065 00066 SnapType _snapType; 00067 SnapOptions _snapOption; 00068 QPointF _mousePoint; 00069 }; 00070 00071 Q_DECLARE_OPERATORS_FOR_FLAGS(DrawView::SnapOptions) 00072 00073 #endif // DRAWVIEW_H
