X-Git-Url: https://git.sesse.net/?p=nageru;a=blobdiff_plain;f=vumeter.cpp;h=c7f8df467ab3681900205d35fdedbfe115846fbc;hp=ab649bc792af8c74e3657f9986006125471d6f0c;hb=92246b3e7e2d914a0549bbc7f90dd07ff3fd103a;hpb=94c0099fc26cb9c55c2a9a1436a3e8f740a4bb8a

diff --git a/vumeter.cpp b/vumeter.cpp
index ab649bc..c7f8df4 100644
--- a/vumeter.cpp
+++ b/vumeter.cpp
@@ -1,34 +1,46 @@
 #include <QPainter>
 
 #include "vumeter.h"
+#include "vu_common.h"
 
 using namespace std;
 
-VUMeter *global_vu_meter = nullptr;
-
 VUMeter::VUMeter(QWidget *parent)
 	: 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);
-
 	float level_lufs;
 	{
 		unique_lock<mutex> lock(level_mutex);
 		level_lufs = this->level_lufs;
 	}
 
-	float level_lu = level_lufs + 23.0f;
-	const float min_level = 18.0f;    // y=0 is top of screen, so “min” is the loudest level.
-	const float max_level = -36.0f;
-	int y = lrintf(height() * (level_lu - min_level) / (max_level - min_level));
-	if (y >= 0 && y < height()) {
-		painter.setPen(Qt::white);
-		painter.drawLine(0, y, width(), y);
-	}
+	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);
 }