00001 /****************************************************************************** 00002 * Copyright (C) 2015 by Ralf Kaestner * 00003 * ralf.kaestner@gmail.com * 00004 * * 00005 * This program is free software; you can redistribute it and/or modify * 00006 * it under the terms of the Lesser GNU General Public License as published by* 00007 * the Free Software Foundation; either version 3 of the License, or * 00008 * (at your option) any later version. * 00009 * * 00010 * This program is distributed in the hope that it will be useful, * 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00013 * Lesser GNU General Public License for more details. * 00014 * * 00015 * You should have received a copy of the Lesser GNU General Public License * 00016 * along with this program. If not, see <http://www.gnu.org/licenses/>. * 00017 ******************************************************************************/ 00018 00019 #ifndef RQT_MULTIPLOT_PLOT_CURSOR_H 00020 #define RQT_MULTIPLOT_PLOT_CURSOR_H 00021 00022 #include <QColor> 00023 #include <QPoint> 00024 #include <QVector> 00025 00026 #include <qwt/qwt_plot_picker.h> 00027 00028 class QwtPlotCanvas; 00029 00030 namespace rqt_multiplot { 00031 class PlotCursor : 00032 public QwtPlotPicker { 00033 Q_OBJECT 00034 public: 00035 PlotCursor(QwtPlotCanvas* canvas); 00036 ~PlotCursor(); 00037 00038 void setActive(bool active, const QPointF& position = QPointF(0.0, 0.0)); 00039 using QwtPlotPicker::isActive; 00040 void setCurrentPosition(const QPointF& position); 00041 const QPointF& getCurrentPosition() const; 00042 void setTrackPoints(bool track); 00043 bool arePointsTracked() const; 00044 bool hasMouseControl() const; 00045 00046 void update(); 00047 00048 void drawRubberBand(QPainter* painter) const; 00049 00050 signals: 00051 void activeChanged(bool active); 00052 void currentPositionChanged(const QPointF& position); 00053 00054 protected: 00055 QRect getTextRect(const QPointF& point, const QFont& font) const; 00056 00057 QwtText trackerTextF(const QPointF& point) const; 00058 00059 void begin(); 00060 void move(const QPoint& point); 00061 bool end(bool ok = true); 00062 00063 bool eventFilter(QObject* object, QEvent* event); 00064 00065 void updateDisplay(); 00066 void updateTrackedPoints(); 00067 00068 void drawTrackedPoints(QPainter* painter) const; 00069 00070 private: 00071 struct TrackedPoint { 00072 QPointF position; 00073 QColor color; 00074 }; 00075 00076 QPointF currentPosition_; 00077 QVector<TrackedPoint> trackedPoints_; 00078 00079 bool trackPoints_; 00080 bool mouseControl_; 00081 00082 private slots: 00083 void plotXAxisScaleDivChanged(); 00084 void plotYAxisScaleDivChanged(); 00085 }; 00086 }; 00087 00088 #endif