CanvasPicker.h

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00001 /***************************************************************************
00002     File                 : CanvasPicker.h
00003     Project              : QtiPlot
00004     --------------------------------------------------------------------
00005     Copyright            : (C) 2006 by Ion Vasilief, Tilman Hoener zu Siederdissen
00006     Email (use @ for *)  : ion_vasilief*yahoo.fr, thzs*gmx.net
00007     Description          : Canvas picker
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 #include <QObject>
00030 #include "Plot.h"
00031 
00032 class Graph;
00033 class ArrowMarker;
00034 
00041 class CanvasPicker: public QObject
00042 {
00043     Q_OBJECT
00044 public:
00045      CanvasPicker(Graph *plot);
00046      virtual bool eventFilter(QObject *, QEvent *);
00047      void selectPoints(int n);
00048      void selectPeak(const QPoint& p);
00049 
00051 
00053     void disableEditing();
00054 
00055 private:
00056     void drawTextMarker(const QPoint&);
00057     void drawLineMarker(const QPoint&, bool endArrow);
00058 
00060 
00063     bool selectMarker(const QMouseEvent *e);
00064 
00070     Graph *plot() { return (Graph *)parent(); }
00071 
00077     Plot* plotWidget;
00078     QPoint startLinePoint, endLinePoint;
00079 
00080 signals:
00081     void showPlotDialog(int);
00082     void viewLineDialog();
00083     void viewImageDialog();
00084     void drawTextOff();
00085     void showMarkerPopupMenu();
00086     void modified();
00087     void selectPlot();
00088 
00089 private:
00090     bool pointSelected;
00097     ArrowMarker *d_editing_marker;
00098 };

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