12 LRAMeter::LRAMeter(QWidget *parent)
17 void LRAMeter::resizeEvent(QResizeEvent *event)
21 on_pixmap = QPixmap(width(), height());
22 QPainter on_painter(&on_pixmap);
23 on_painter.fillRect(0, 0, width(), height(), parentWidget()->palette().window());
24 draw_vu_meter(on_painter, -HUGE_VAL, HUGE_VAL, width(), height(), margin);
26 off_pixmap = QPixmap(width(), height());
27 QPainter off_painter(&off_pixmap);
28 off_painter.fillRect(0, 0, width(), height(), parentWidget()->palette().window());
29 draw_vu_meter(off_painter, -HUGE_VAL, -HUGE_VAL, width(), height(), margin);
32 void LRAMeter::paintEvent(QPaintEvent *event)
34 QPainter painter(this);
38 float range_high_lufs;
40 unique_lock<mutex> lock(level_mutex);
41 level_lufs = this->level_lufs;
42 range_low_lufs = this->range_low_lufs;
43 range_high_lufs = this->range_high_lufs;
46 float level_lu = level_lufs + 23.0f;
47 float range_low_lu = range_low_lufs + 23.0f;
48 float range_high_lu = range_high_lufs + 23.0f;
49 int range_low_pos = lufs_to_pos(range_low_lu, height());
50 int range_high_pos = lufs_to_pos(range_high_lu, height());
52 QRect top_off_rect(0, 0, width(), range_high_pos);
53 QRect on_rect(0, range_high_pos, width(), range_low_pos - range_high_pos);
54 QRect bottom_off_rect(0, range_low_pos, width(), height() - range_low_pos);
56 painter.drawPixmap(top_off_rect, off_pixmap, top_off_rect);
57 painter.drawPixmap(on_rect, on_pixmap, on_rect);
58 painter.drawPixmap(bottom_off_rect, off_pixmap, bottom_off_rect);
60 // Draw the target area (+/-1 LU is allowed EBU range).
61 // It turns green when we're within.
62 int min_y = lufs_to_pos(1.0f, height());
63 int max_y = lufs_to_pos(-1.0f, height());
65 // FIXME: This outlining isn't so pretty.
70 painter.drawRect(2, min_y, width() - 5, max_y - min_y);
74 if (level_lu >= -1.0f && level_lu <= 1.0f) {
75 pen.setColor(Qt::green);
77 pen.setColor(Qt::red);
81 painter.drawRect(2, min_y, width() - 5, max_y - min_y);
84 // Draw the integrated loudness meter, in the same color as the target area.
85 int y = lufs_to_pos(level_lu, height());
90 painter.drawRect(2, y, width() - 5, 1);
94 if (level_lu >= -1.0f && level_lu <= 1.0f) {
95 pen.setColor(Qt::green);
97 pen.setColor(Qt::red);
101 painter.drawRect(2, y, width() - 5, 1);