8 VUMeter::VUMeter(QWidget *parent)
13 void VUMeter::resizeEvent(QResizeEvent *event)
15 recalculate_pixmaps();
18 void VUMeter::paintEvent(QPaintEvent *event)
20 QPainter painter(this);
24 unique_lock<mutex> lock(level_mutex);
25 level_lufs = this->level_lufs;
28 float level_lu = level_lufs - ref_level_lufs;
29 int on_pos = lrint(lufs_to_pos(level_lu, height()));
32 QRect on_rect(0, 0, width(), height() - on_pos);
33 QRect off_rect(0, height() - on_pos, width(), height());
35 painter.drawPixmap(on_rect, on_pixmap, on_rect);
36 painter.drawPixmap(off_rect, off_pixmap, off_rect);
38 QRect off_rect(0, 0, width(), on_pos);
39 QRect on_rect(0, on_pos, width(), height() - on_pos);
41 painter.drawPixmap(off_rect, off_pixmap, off_rect);
42 painter.drawPixmap(on_rect, on_pixmap, on_rect);
46 void VUMeter::recalculate_pixmaps()
48 on_pixmap = QPixmap(width(), height());
49 QPainter on_painter(&on_pixmap);
50 draw_vu_meter(on_painter, width(), height(), 0, true, min_level, max_level, flip);
52 off_pixmap = QPixmap(width(), height());
53 QPainter off_painter(&off_pixmap);
54 draw_vu_meter(off_painter, width(), height(), 0, false, min_level, max_level, flip);