Mercurial > hg > dmlib
annotate edwaveform.cpp @ 376:40e33ad0d153
Work towards a working editor .. some day.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Wed, 17 Oct 2012 02:27:55 +0300 |
| parents | 1b8362a26692 |
| children | e5220ff48bc8 |
| rev | line source |
|---|---|
| 357 | 1 #include <QtGui> |
| 2 #include "edwaveform.h" | |
| 3 | |
| 4 | |
| 5 WaveformView::WaveformView(QWidget *parent) : QWidget(parent) | |
| 6 { | |
|
376
40e33ad0d153
Work towards a working editor .. some day.
Matti Hamalainen <ccr@tnsp.org>
parents:
357
diff
changeset
|
7 data = NULL; |
|
40e33ad0d153
Work towards a working editor .. some day.
Matti Hamalainen <ccr@tnsp.org>
parents:
357
diff
changeset
|
8 len = time = offs = 0; |
| 357 | 9 scale = 1.0f; |
| 10 } | |
| 11 | |
| 12 | |
|
376
40e33ad0d153
Work towards a working editor .. some day.
Matti Hamalainen <ccr@tnsp.org>
parents:
357
diff
changeset
|
13 void WaveformView::setWaveform(qint16 *mdata, int mlen) |
| 357 | 14 { |
|
376
40e33ad0d153
Work towards a working editor .. some day.
Matti Hamalainen <ccr@tnsp.org>
parents:
357
diff
changeset
|
15 data = mdata; |
|
40e33ad0d153
Work towards a working editor .. some day.
Matti Hamalainen <ccr@tnsp.org>
parents:
357
diff
changeset
|
16 len = mlen; |
| 357 | 17 update(); |
| 18 } | |
| 19 | |
| 20 | |
| 21 void WaveformView::setTime(const int mtime) | |
| 22 { | |
| 23 time = mtime; | |
| 24 update(); | |
| 25 } | |
| 26 | |
| 27 | |
| 28 void WaveformView::setOffset(const int moffs) | |
| 29 { | |
| 30 offs = moffs; | |
| 31 update(); | |
| 32 } | |
| 33 | |
| 34 | |
| 35 void WaveformView::setScale(const float mscale) | |
| 36 { | |
| 37 if (mscale > 0.05) | |
| 38 scale = mscale; | |
| 39 update(); | |
| 40 } | |
| 41 | |
| 42 | |
| 43 void WaveformView::paintEvent(QPaintEvent *) | |
| 44 { | |
| 45 QColor waveColor(0, 150, 0); | |
| 46 QColor markerColor(255,255,255); | |
| 47 | |
| 48 QPainter painter(this); | |
| 49 painter.setRenderHint(QPainter::Antialiasing); | |
| 50 | |
| 51 painter.save(); | |
| 52 painter.translate(0, height() / 2); | |
| 53 painter.scale(scale, height() / 32768.0f); | |
| 54 painter.setPen(waveColor); | |
| 55 | |
| 56 int prevY = 0, prevX = 0; | |
| 57 for (int xc = 0; xc < width(); xc++) | |
| 58 { | |
|
376
40e33ad0d153
Work towards a working editor .. some day.
Matti Hamalainen <ccr@tnsp.org>
parents:
357
diff
changeset
|
59 qint16 value = data[(int) ((offs + xc) * scale)]; |
| 357 | 60 painter.drawLine(prevX, prevY, xc, value); |
| 61 prevY = value; prevX = xc; | |
| 62 } | |
| 63 painter.restore(); | |
| 64 | |
| 65 | |
| 66 if (time >= offs * scale && time - offs <= width() * scale) | |
| 67 { | |
| 68 int xc = time - offs; | |
| 69 painter.scale(scale, 1); | |
| 70 painter.setPen(markerColor); | |
| 71 painter.drawLine(xc, 0, xc, height()); | |
| 72 } | |
| 73 } | |
| 74 | |
| 75 | |
| 76 void WaveformView::mousePressEvent(QMouseEvent *ev) | |
| 77 { | |
| 78 /* | |
| 79 if (ev->button() == Qt::LeftButton) | |
| 80 { | |
| 81 lastPoint = ev->pos(); | |
| 82 scribbling = true; | |
| 83 } | |
| 84 */ | |
| 85 } | |
| 86 | |
| 87 | |
| 88 void WaveformView::mouseMoveEvent(QMouseEvent *ev) | |
| 89 { | |
| 90 /* | |
| 91 if ((ev->buttons() & Qt::LeftButton) && scribbling) | |
| 92 drawLineTo(ev->pos()); | |
| 93 */ | |
| 94 } | |
| 95 | |
| 96 | |
| 97 void WaveformView::mouseReleaseEvent(QMouseEvent *ev) | |
| 98 { | |
| 99 /* | |
| 100 if (ev->button() == Qt::LeftButton && scribbling) | |
| 101 { | |
| 102 drawLineTo(ev->pos()); | |
| 103 scribbling = false; | |
| 104 } | |
| 105 */ | |
| 106 } |