audiomonitor: revert to qopenglwidget

app/panel/audiomonitor/audiomonitor.cpp

@@ -31,24 +31,11 @@ AudioMonitorPanel::AudioMonitorPanel(QWidget *parent) :
 {
   audio_monitor_ = new AudioMonitor();
 
-  audio_monitor_->installEventFilter(this);
-
-  setWidget(QWidget::createWindowContainer(audio_monitor_));
+  setWidget(audio_monitor_);
 
   Retranslate();
 }
 
-bool AudioMonitorPanel::eventFilter(QObject *o, QEvent *e)
-{
-  if (o == audio_monitor_ && e->type() == QEvent::FocusIn) {
-    // HACK: QWindow focus isn't accounted for in QApplication::focusChanged, so we handle it
-    //       manually here.
-    PanelManager::instance()->FocusChanged(nullptr, this);
-  }
-
-  return super::eventFilter(o, e);
-}
-
 void AudioMonitorPanel::Retranslate()
 {
   SetTitle(tr("Audio Monitor"));

app/panel/audiomonitor/audiomonitor.h

@@ -45,8 +45,6 @@ public:
     audio_monitor_->SetParams(params);
   }
 
-  virtual bool eventFilter(QObject *o, QEvent *e) override;
-
 private:
   virtual void Retranslate() override;
 

app/widget/audiomonitor/audiomonitor.h

@@ -22,7 +22,7 @@
 #define AUDIOMONITORWIDGET_H
 
 #include <QFile>
-#include <QOpenGLWindow>
+#include <QOpenGLWidget>
 #include <QTimer>
 
 #include "audio/audiovisualwaveform.h"
@@ -32,7 +32,7 @@
 
 namespace olive {
 
-class AudioMonitor : public QOpenGLWindow
+class AudioMonitor : public QOpenGLWidget
 {
   Q_OBJECT
 public: