- float level_lu = level_lufs + 23.0f;
- int y = lufs_to_pos(level_lu, height());
- painter.fillRect(0, y, width(), 2, Qt::white);
+ float level_lu = level_lufs - ref_level_lufs;
+ int on_pos = lrint(lufs_to_pos(level_lu, height()));
+ QRect off_rect(0, 0, width(), on_pos);
+ QRect on_rect(0, on_pos, width(), height() - on_pos);
+
+ painter.drawPixmap(off_rect, off_pixmap, off_rect);
+ painter.drawPixmap(on_rect, on_pixmap, on_rect);
+}
+
+void VUMeter::recalculate_pixmaps()
+{
+ on_pixmap = QPixmap(width(), height());
+ QPainter on_painter(&on_pixmap);
+ draw_vu_meter(on_painter, width(), height(), 0, true, min_level, max_level);
+
+ off_pixmap = QPixmap(width(), height());
+ QPainter off_painter(&off_pixmap);
+ draw_vu_meter(off_painter, width(), height(), 0, false, min_level, max_level);