wheelwidget.h Example File | Qt WebKit Examples 5.9

Qt 5.9 | Qt WebKit Examples | Wheel Scroller Example | wheelwidget.h Example File

Qt 5.9.2 Reference Documentation

# wheelwidget.h Example File

webkitwidgets/scroller/wheel/wheelwidget.h

      /****************************************************************************
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      ** This file is part of the examples of the Qt Toolkit.
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      #ifndef WHEELWIDGET_H
      #define WHEELWIDGET_H

      #include <QWidget>
      #include <QStringList>

      class QPainter;
      class QRect;

      class AbstractWheelWidget : public QWidget {
          Q_OBJECT

      public:
          AbstractWheelWidget(bool touch, QWidget *parent = 0);
          virtual ~AbstractWheelWidget();

          int currentIndex() const;
          void setCurrentIndex(int index);

          bool event(QEvent*);
          void paintEvent(QPaintEvent *e);
          virtual void paintItem(QPainter* painter, int index, const QRect &rect) = 0;

          virtual int itemHeight() const = 0;
          virtual int itemCount() const = 0;

      public slots:
          void scrollTo(int index);

      signals:
          void stopped(int index);

      protected:
          int m_currentItem;
          int m_itemOffset; // 0-itemHeight()
          qreal m_lastY;
      };

      class StringWheelWidget : public AbstractWheelWidget {
          Q_OBJECT

      public:
          StringWheelWidget(bool touch);

          QStringList items() const;
          void setItems( const QStringList &items );

          QSize sizeHint() const;
          QSize minimumSizeHint() const;

          void paintItem(QPainter* painter, int index, const QRect &rect);

          int itemHeight() const;
          int itemCount() const;

      private:
          QStringList m_items;
      };

      #endif // WHEELWIDGET_H