8 VUMeter::VUMeter(QWidget *parent)
13 void VUMeter::resizeEvent(QResizeEvent *event)
15 on_pixmap = QPixmap(width(), height());
16 QPainter on_painter(&on_pixmap);
17 draw_vu_meter(on_painter, width(), height(), 0, true);
19 off_pixmap = QPixmap(width(), height());
20 QPainter off_painter(&off_pixmap);
21 draw_vu_meter(off_painter, width(), height(), 0, false);
24 void VUMeter::paintEvent(QPaintEvent *event)
26 QPainter painter(this);
30 unique_lock<mutex> lock(level_mutex);
31 level_lufs = this->level_lufs;
34 float level_lu = level_lufs + 23.0f;
35 int on_pos = lrint(lufs_to_pos(level_lu, height()));
36 QRect off_rect(0, 0, width(), on_pos);
37 QRect on_rect(0, on_pos, width(), height() - on_pos);
39 painter.drawPixmap(off_rect, off_pixmap, off_rect);
40 painter.drawPixmap(on_rect, on_pixmap, on_rect);