chasewidget.h Example File

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  #ifndef CHASEWIDGET_H
  #define CHASEWIDGET_H

  #include <QtWidgets/QWidget>

  #include <QtCore/QSize>
  #include <QtGui/QColor>
  #include <QtGui/QPixmap>

  class QHideEvent;
  class QShowEvent;
  class QPaintEvent;
  class QTimerEvent;

  class ChaseWidget : public QWidget
  {
      Q_OBJECT
  public:
      ChaseWidget(QWidget *parent = 0, QPixmap pixmap = QPixmap(), bool pixmapEnabled = false);

      void setAnimated(bool value);
      void setPixmapEnabled(bool enable);
      QSize sizeHint() const;

  protected:
      void paintEvent(QPaintEvent *event);
      void timerEvent(QTimerEvent *event);

  private:
      int segmentCount() const;
      QColor colorForSegment(int segment) const;

      int m_segment;
      int m_delay;
      int m_step;
      int m_timerId;
      bool m_animated;
      QPixmap m_pixmap;
      bool m_pixmapEnabled;
  };

  #endif