comparison widgets/LevelPanWidget.cpp @ 925:76f4b81b766d tonioni

Try using audio level fader logic

 #include <QPainter>
 #include <QMouseEvent>
 #include <QWheelEvent>
 
 #include "layer/ColourMapper.h"
+#include "base/AudioLevel.h"
 
 #include <iostream>
 
 using std::cerr;
 using std::endl;

 LevelPanWidget::~LevelPanWidget()
 {
 }
 
 void
-LevelPanWidget::setLevel(float level)
-{
-    m_level = int(round(level * maxLevel));
-    if (m_level < 0) m_level = 0;
-    if (m_level > maxLevel) m_level = maxLevel;
-    update();
+LevelPanWidget::setLevel(float flevel)
+{
+    int level = AudioLevel::multiplier_to_fader
+	(flevel, maxLevel, AudioLevel::ShortFader);
+    if (level < 0) level = 0;
+    if (level > maxLevel) level = maxLevel;
+    if (level != m_level) {
+	m_level = level;
+	float convertsTo = getLevel();
+	if (fabsf(convertsTo - flevel) > 1e-5) {
+	    emitLevelChanged();
+	}
+	update();
+    }
 }
 
 void
 LevelPanWidget::setPan(float pan)
 {

 }
 
 float
 LevelPanWidget::getLevel() const
 {
-    return float(m_level) / float(maxLevel);
+    return float(AudioLevel::fader_to_multiplier
+		 (m_level, maxLevel, AudioLevel::ShortFader));
 }
 
 float
 LevelPanWidget::getPan() const
 {