00001 /*************************************************************************** 00002 File : RangeSelectorTool.h 00003 Project : QtiPlot 00004 -------------------------------------------------------------------- 00005 Copyright : (C) 2006,2007 by Ion Vasilief, Knut Franke 00006 Email (use @ for *) : ion_vasilief*yahoo.fr, knut.franke*gmx.de 00007 Description : Plot tool for selecting ranges on curves. 00008 00009 ***************************************************************************/ 00010 00011 /*************************************************************************** 00012 * * 00013 * This program is free software; you can redistribute it and/or modify * 00014 * it under the terms of the GNU General Public License as published by * 00015 * the Free Software Foundation; either version 2 of the License, or * 00016 * (at your option) any later version. * 00017 * * 00018 * This program is distributed in the hope that it will be useful, * 00019 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00020 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00021 * GNU General Public License for more details. * 00022 * * 00023 * You should have received a copy of the GNU General Public License * 00024 * along with this program; if not, write to the Free Software * 00025 * Foundation, Inc., 51 Franklin Street, Fifth Floor, * 00026 * Boston, MA 02110-1301 USA * 00027 * * 00028 ***************************************************************************/ 00029 #ifndef RANGE_SELECTOR_TOOL_H 00030 #define RANGE_SELECTOR_TOOL_H 00031 00032 #include "PlotToolInterface.h" 00033 #include <qwt_double_rect.h> 00034 #include <qwt_plot_marker.h> 00035 #include <qwt_plot_picker.h> 00036 00037 class QwtPlotCurve; 00038 class QPoint; 00039 class QEvent; 00040 00052 class RangeSelectorTool : public QwtPlotPicker, public PlotToolInterface 00053 { 00054 Q_OBJECT 00055 public: 00056 RangeSelectorTool(Graph *graph, const QObject *status_target=NULL, const char *status_slot=""); 00057 virtual ~RangeSelectorTool(); 00058 double minXValue() const { return QMIN(d_active_marker.xValue(), d_inactive_marker.xValue()); } 00059 double maxXValue() const { return QMAX(d_active_marker.xValue(), d_inactive_marker.xValue()); } 00060 int dataSize() const { return qAbs(d_active_point - d_inactive_point); } 00061 virtual bool eventFilter(QObject *obj, QEvent *event); 00062 bool keyEventFilter(QKeyEvent *ke); 00063 00064 QwtPlotCurve *selectedCurve() const { return d_selected_curve; } 00066 void setSelectedCurve(QwtPlotCurve *curve); 00067 00068 void copySelection(); 00069 void cutSelection(); 00070 void clearSelection(); 00071 void pasteSelection(); 00072 virtual int rtti() const {return PlotToolInterface::Rtti_RangeSelector;}; 00073 00074 public slots: 00075 virtual void pointSelected(const QPoint &point); 00076 void setCurveRange(); 00077 void setEnabled(bool on = true); 00078 00079 signals: 00084 void statusText(const QString&); 00086 void changed(); 00087 protected: 00088 virtual void append(const QPoint& point) { pointSelected(point); } 00089 void emitStatusText(); 00090 void switchActiveMarker(); 00092 void setActivePoint(int index); 00093 private: 00094 QwtPlotMarker d_active_marker, d_inactive_marker; 00095 int d_active_point, d_inactive_point; 00096 QwtPlotCurve *d_selected_curve; 00097 bool d_enabled; 00098 }; 00099 00100 #endif // ifndef RANGE_SELECTOR_TOOL_H 00101