Make reference level of VUMeter and LRAMeter adjustable.

[nageru] / lrameter.cpp

diff --git a/lrameter.cpp b/lrameter.cpp
index f4395bec39ceb1094e4a472d67a110e4a05c4515..ab3c5c2b925dee19e3045a940eb61e500e6a8075 100644 (file)
--- a/lrameter.cpp
+++ b/lrameter.cpp
@@ -16,17 +16,7 @@ LRAMeter::LRAMeter(QWidget *parent)
 
 void LRAMeter::resizeEvent(QResizeEvent *event)
 {
-       const int margin = 5;
-
-       on_pixmap = QPixmap(width(), height());
-       QPainter on_painter(&on_pixmap);
-       on_painter.fillRect(0, 0, width(), height(), parentWidget()->palette().window());
-       draw_vu_meter(on_painter, width(), height(), margin, true);
-
-       off_pixmap = QPixmap(width(), height());
-       QPainter off_painter(&off_pixmap);
-       off_painter.fillRect(0, 0, width(), height(), parentWidget()->palette().window());
-       draw_vu_meter(off_painter, width(), height(), margin, false);
+       recalculate_pixmaps();
 }
 
 void LRAMeter::paintEvent(QPaintEvent *event)
@@ -43,9 +33,9 @@ void LRAMeter::paintEvent(QPaintEvent *event)
                range_high_lufs = this->range_high_lufs;
        }
 
-       float level_lu = level_lufs + 23.0f;
-       float range_low_lu = range_low_lufs + 23.0f;
-       float range_high_lu = range_high_lufs + 23.0f;
+       float level_lu = level_lufs - ref_level_lufs;
+       float range_low_lu = range_low_lufs - ref_level_lufs;
+       float range_high_lu = range_high_lufs - ref_level_lufs;
        int range_low_pos = lrint(lufs_to_pos(range_low_lu, height()));
        int range_high_pos = lrint(lufs_to_pos(range_high_lu, height()));
 
@@ -101,3 +91,18 @@ void LRAMeter::paintEvent(QPaintEvent *event)
                painter.drawRect(2, y, width() - 5, 1);
        }
 }
+
+void LRAMeter::recalculate_pixmaps()
+{
+       const int margin = 5;
+
+       on_pixmap = QPixmap(width(), height());
+       QPainter on_painter(&on_pixmap);
+       on_painter.fillRect(0, 0, width(), height(), parentWidget()->palette().window());
+       draw_vu_meter(on_painter, width(), height(), margin, true, min_level, max_level);
+
+       off_pixmap = QPixmap(width(), height());
+       QPainter off_painter(&off_pixmap);
+       off_painter.fillRect(0, 0, width(), height(), parentWidget()->palette().window());
+       draw_vu_meter(off_painter, width(), height(), margin, false, min_level, max_level);
+}