CanvasPicker.h

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/***************************************************************************
    File                 : CanvasPicker.h
    Project              : SciDAVis
    --------------------------------------------------------------------
    Copyright            : (C) 2006 by Ion Vasilief, Tilman Benkert
    Email (use @ for *)  : ion_vasilief*yahoo.fr, thzs*gmx.net
    Description          : Canvas picker

 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *  This program is free software; you can redistribute it and/or modify   *
 *  it under the terms of the GNU General Public License as published by   *
 *  the Free Software Foundation; either version 2 of the License, or      *
 *  (at your option) any later version.                                    *
 *                                                                         *
 *  This program is distributed in the hope that it will be useful,        *
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
 *  GNU General Public License for more details.                           *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the Free Software           *
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor,                    *
 *   Boston, MA  02110-1301  USA                                           *
 *                                                                         *
 ***************************************************************************/
#include <QObject>
#include "Plot.h"

class Graph;
class ArrowMarker;

class CanvasPicker: public QObject
{
    Q_OBJECT
public:
     CanvasPicker(Graph *plot);
     virtual bool eventFilter(QObject *, QEvent *);
     void selectPoints(int n);
     void selectPeak(const QPoint& p);


    void disableEditing();

private:
    void drawTextMarker(const QPoint&);
    void drawLineMarker(const QPoint&, bool endArrow);


    bool selectMarker(const QMouseEvent *e);

    Graph *plot() { return (Graph *)parent(); }

    Plot* plotWidget;
    QPoint startLinePoint, endLinePoint;

signals:
    void showPlotDialog(int);
    void viewTextDialog();
    void viewLineDialog();
    void viewImageDialog();
    void drawTextOff();
    void showMarkerPopupMenu();
    void modified();
    void selectPlot();

private:
    bool pointSelected;
    ArrowMarker *d_editing_marker;
};