X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;ds=sidebyside;f=vumeter.cpp;h=c7f8df467ab3681900205d35fdedbfe115846fbc;hb=92246b3e7e2d914a0549bbc7f90dd07ff3fd103a;hp=da93c1e380732535c18ee38d038e2c9996184fe0;hpb=2489e27c559cece872818930a9aa6fbc9ead994d;p=nageru

diff --git a/vumeter.cpp b/vumeter.cpp
index da93c1e..c7f8df4 100644
--- a/vumeter.cpp
+++ b/vumeter.cpp
@@ -10,32 +10,37 @@ VUMeter::VUMeter(QWidget *parent)
 {
 }
 
+void VUMeter::resizeEvent(QResizeEvent *event)
+{
+	recalculate_pixmaps();
+}
+
 void VUMeter::paintEvent(QPaintEvent *event)
 {
 	QPainter painter(this);
 
-	painter.fillRect(0, 0, width(), height(), Qt::black);
-
-	// Draw some reference bars.
-	for (int level = -18; level < 9; ++level) {
-		int min_y = lufs_to_pos(level, height()) - 1;
-		int max_y = lufs_to_pos(level + 1.0f, height()) + 1;
-
-		// Recommended range is 0 LU +/- 1 LU.
-		if (level == -1 || level == 0) {
-			painter.fillRect(1, min_y, width() - 2, max_y - min_y, Qt::green);
-		} else {
-			painter.fillRect(1, min_y, width() - 2, max_y - min_y, QColor(80, 80, 80));
-		}
-	}
-
 	float level_lufs;
 	{
 		unique_lock<mutex> lock(level_mutex);
 		level_lufs = this->level_lufs;
 	}
 
-	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);
 }