X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=vumeter.cpp;h=08ac1da684c3c479b5c58a4759fdb25e8602d51a;hb=1fc8b5d92fce7ac0b7e87ed3087e393774fd4b3c;hp=da93c1e380732535c18ee38d038e2c9996184fe0;hpb=2489e27c559cece872818930a9aa6fbc9ead994d;p=nageru

diff --git a/vumeter.cpp b/vumeter.cpp
index da93c1e..08ac1da 100644
--- a/vumeter.cpp
+++ b/vumeter.cpp
@@ -10,32 +10,46 @@ 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()));
+
+	if (flip) {
+		QRect on_rect(0, 0, width(), height() - on_pos);
+		QRect off_rect(0, height() - on_pos, width(), height());
+
+		painter.drawPixmap(on_rect, on_pixmap, on_rect);
+		painter.drawPixmap(off_rect, off_pixmap, off_rect);
+	} else {
+		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, flip);
+
+	off_pixmap = QPixmap(width(), height());
+	QPainter off_painter(&off_pixmap);
+	draw_vu_meter(off_painter, width(), height(), 0, false, min_level, max_level, flip);
 }