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1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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2
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3 /*
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4 Rosegarden
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5 A MIDI and audio sequencer and musical notation editor.
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6 Copyright 2000-2010 the Rosegarden development team.
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7
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8 Other copyrights also apply to some parts of this work. Please
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9 see the AUTHORS file and individual file headers for details.
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10
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11 This program is free software; you can redistribute it and/or
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12 modify it under the terms of the GNU General Public License as
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13 published by the Free Software Foundation; either version 2 of the
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14 License, or (at your option) any later version. See the file
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15 COPYING included with this distribution for more information.
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16 */
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17
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18 #ifndef _RG_PANNER_H_
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19 #define _RG_PANNER_H_
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20
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21 #include <QGraphicsView>
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22
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23 class Panned;
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24
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25 class Panner : public QGraphicsView
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26 {
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27 Q_OBJECT
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28
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29 public:
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30 Panner();
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31 virtual ~Panner() { }
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32
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33 virtual void setScene(QGraphicsScene *);
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34
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35 void connectToPanned(Panned *p);
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36
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37 signals:
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38 void pannedRectChanged(QRectF);
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39 void pannerChanged(QRectF);
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40 void zoomIn();
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41 void zoomOut();
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42
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43 public slots:
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44 void slotSetPannedRect(QRectF);
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45
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46 protected slots:
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47 void slotSceneRectChanged(const QRectF &);
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48
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49 protected:
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50 QRectF m_pannedRect;
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51
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52 void moveTo(QPoint);
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53
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54 virtual void paintEvent(QPaintEvent *);
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55 virtual void mousePressEvent(QMouseEvent *e);
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56 virtual void mouseMoveEvent(QMouseEvent *e);
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57 virtual void mouseReleaseEvent(QMouseEvent *e);
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58 virtual void mouseDoubleClickEvent(QMouseEvent *e);
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59 virtual void wheelEvent(QWheelEvent *e);
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60
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61 virtual void resizeEvent(QResizeEvent *);
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62
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63 virtual void updateScene(const QList<QRectF> &);
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64 virtual void drawItems(QPainter *, int, QGraphicsItem *[],
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65 const QStyleOptionGraphicsItem []);
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66
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67 bool m_clicked;
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68 QRectF m_clickedRect;
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69 QPoint m_clickedPoint;
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70
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71 QPixmap m_cache;
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72 };
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73
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74 #endif
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75
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