QmitkOverlayWidget.h

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/*============================================================================
 
The Medical Imaging Interaction Toolkit (MITK)
 
Copyright (c) German Cancer Research Center (DKFZ)
All rights reserved.
 
Use of this source code is governed by a 3-clause BSD license that can be
found in the LICENSE file.
 
============================================================================*/
 
#ifndef QmitkOverlayWidget_h
#define QmitkOverlayWidget_h
 
#include <QWidget>
 
#include <MitkQtWidgetsExports.h>
 
class MITKQTWIDGETS_EXPORT QmitkOverlayWidget : public QWidget
{
  Q_OBJECT
  Q_PROPERTY(bool transparentForMouseEvents READ isTransparentForMouseEvents WRITE setTransparentForMouseEvents)
 
public:
  explicit QmitkOverlayWidget(QWidget* parent = nullptr);
  ~QmitkOverlayWidget() override;
 
  bool isTransparentForMouseEvents() const;
  void setTransparentForMouseEvents(bool transparent = true);
 
  int getOpacity() const;
 
public slots:
  void setOpacity(int opacity);
 
protected:
  bool event(QEvent* e) override;
  bool eventFilter(QObject* watched, QEvent* event) override;
  void paintEvent(QPaintEvent* event) override;
 
private:
  void installEventFilterOnParent();
  void removeEventFilterFromParent();
 
  int m_Opacity = 63;
 
};
 
#endif