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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 #include "panned.h"
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19
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20 #include <QScrollBar>
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21
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22 #include <iostream>
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23
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24 Panned::Panned()
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25 {
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26 }
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27
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28 void
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29 Panned::resizeEvent(QResizeEvent *ev)
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30 {
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31 QPointF near = mapToScene(0, 0);
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32 QPointF far = mapToScene(width(), height());
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33 QSizeF sz(far.x()-near.x(), far.y()-near.y());
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34 QRectF pr(near, sz);
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35
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36 if (pr != m_pannedRect) {
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37 m_pannedRect = pr;
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38 emit pannedRectChanged(pr);
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39 }
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40
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41 QGraphicsView::resizeEvent(ev);
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42 }
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43
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44 void
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45 Panned::paintEvent(QPaintEvent *e)
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46 {
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47 QGraphicsView::paintEvent(e);
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48 }
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49
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50 void
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51 Panned::drawForeground(QPainter *paint, const QRectF &)
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52 {
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53 QPointF near = mapToScene(0, 0);
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54 QPointF far = mapToScene(width(), height());
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55 QSizeF sz(far.x()-near.x(), far.y()-near.y());
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56 QRectF pr(near, sz);
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57
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58 if (pr != m_pannedRect) {
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59 if (pr.x() != m_pannedRect.x()) emit pannedContentsScrolled();
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60 m_pannedRect = pr;
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61 emit pannedRectChanged(pr);
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62 }
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63 }
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64
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65 void
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66 Panned::slotSetPannedRect(QRectF pr)
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67 {
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68 centerOn(pr.center());
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69 // setSceneRect(pr);
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70 // m_pannedRect = pr;
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71 }
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72
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73 void
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74 Panned::wheelEvent(QWheelEvent *ev)
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75 {
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76 emit wheelEventReceived(ev);
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77 QGraphicsView::wheelEvent(ev);
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78 }
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79
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80 void
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81 Panned::slotEmulateWheelEvent(QWheelEvent *ev)
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82 {
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83 QGraphicsView::wheelEvent(ev);
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84 }
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85
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86 void
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87 Panned::leaveEvent(QEvent *)
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88 {
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89 emit mouseLeaves();
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90 }
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