CustomEventRelayer.h

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#ifndef CUSTOMEVENTRELAYER_H
#define CUSTOMEVENTRELAYER_H
 
#include <QObject>
 
#include "libmythbase/mythcorecontext.h"
 
/* This is a simple class that relays a QT custom event to an ordinary function
 * pointer.  Useful when you have a relativly small app like mythcommflag that
 * you don't want to wrap inside a class. 
 */
 
class QEvent;
class CustomEventRelayer : public QObject
{
    Q_OBJECT
 
  public:
    explicit CustomEventRelayer(void (*fp_in)(QEvent*)) : m_fp(fp_in)
    {
        gCoreContext->addListener(this);
    }
 
    CustomEventRelayer()
    {
        gCoreContext->addListener(this);
    }
 
    virtual void deleteLater(void)
    {
        gCoreContext->removeListener(this);
        QObject::deleteLater();
    }
 
    void customEvent(QEvent *e) override //QObject
        { m_fp(e); }
 
  protected:
    ~CustomEventRelayer() override = default;
 
  private:
    void (*m_fp)(QEvent*) {nullptr};
};
 
#endif //  CUSTOMEVENTRELAYER_H
 
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