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1 #include <QtGui>
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2 #include "edwaveform.h"
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3
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4
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5 WaveformView::WaveformView(QWidget *parent) : QWidget(parent)
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6 {
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7 track = NULL;
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8 time = offs = 0;
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9 scale = 1.0f;
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10 }
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11
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12
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13 void WaveformView::setTrack(DMWaveform *mtrack)
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14 {
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15 track = mtrack;
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16 update();
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17 }
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18
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19
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20 DMWaveform * WaveformView::getTrack()
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21 {
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22 return track;
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23 }
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24
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25
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26 void WaveformView::setTime(const int mtime)
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27 {
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28 time = mtime;
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29 update();
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30 }
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31
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32
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33 void WaveformView::setOffset(const int moffs)
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34 {
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35 offs = moffs;
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36 update();
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37 }
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38
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39
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40 void WaveformView::setScale(const float mscale)
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41 {
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42 if (mscale > 0.05)
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43 scale = mscale;
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44 update();
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45 }
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46
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47
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48 void WaveformView::paintEvent(QPaintEvent *)
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49 {
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50 QColor waveColor(0, 150, 0);
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51 QColor markerColor(255,255,255);
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52
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53 QPainter painter(this);
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54 painter.setRenderHint(QPainter::Antialiasing);
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55
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56 painter.save();
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57 painter.translate(0, height() / 2);
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58 painter.scale(scale, height() / 32768.0f);
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59 painter.setPen(waveColor);
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60
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61 int prevY = 0, prevX = 0;
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62 for (int xc = 0; xc < width(); xc++)
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63 {
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64 qint16 value = data[(offs + xc) * scale];
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65 painter.drawLine(prevX, prevY, xc, value);
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66 prevY = value; prevX = xc;
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67 }
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68 painter.restore();
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69
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70
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71 if (time >= offs * scale && time - offs <= width() * scale)
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72 {
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73 int xc = time - offs;
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74 painter.scale(scale, 1);
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75 painter.setPen(markerColor);
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76 painter.drawLine(xc, 0, xc, height());
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77 }
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78 }
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79
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80
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81 void WaveformView::mousePressEvent(QMouseEvent *ev)
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82 {
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83 /*
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84 if (ev->button() == Qt::LeftButton)
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85 {
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86 lastPoint = ev->pos();
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87 scribbling = true;
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88 }
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89 */
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90 }
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91
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92
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93 void WaveformView::mouseMoveEvent(QMouseEvent *ev)
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94 {
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95 /*
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96 if ((ev->buttons() & Qt::LeftButton) && scribbling)
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97 drawLineTo(ev->pos());
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98 */
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99 }
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100
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101
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102 void WaveformView::mouseReleaseEvent(QMouseEvent *ev)
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103 {
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104 /*
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105 if (ev->button() == Qt::LeftButton && scribbling)
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106 {
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107 drawLineTo(ev->pos());
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108 scribbling = false;
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109 }
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110 */
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111 }
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