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# sortingbox.h Example File
widgets/tooltips/sortingbox.h

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        #ifndef SORTINGBOX_H
        #define SORTINGBOX_H

        #include <QWidget>

        #include "shapeitem.h"

        class QAction;
        class QPoint;
        class QToolButton;

        class SortingBox : public QWidget
        {
            Q_OBJECT

        public:
            SortingBox();

        protected:
            bool event(QEvent *event);
            void resizeEvent(QResizeEvent *event);
            void paintEvent(QPaintEvent *event);
            void mousePressEvent(QMouseEvent *event);
            void mouseMoveEvent(QMouseEvent *event);
            void mouseReleaseEvent(QMouseEvent *event);

        private slots:
            void createNewCircle();
            void createNewSquare();
            void createNewTriangle();

        private:
            int updateButtonGeometry(QToolButton *button, int x, int y);
            void createShapeItem(const QPainterPath &path, const QString &toolTip,
                                 const QPoint &pos, const QColor &color);
            int itemAt(const QPoint &pos);
            void moveItemTo(const QPoint &pos);
            QPoint initialItemPosition(const QPainterPath &path);
            QPoint randomItemPosition();
            QColor initialItemColor();
            QColor randomItemColor();
            QToolButton *createToolButton(const QString &toolTip, const QIcon &icon,
                                          const char *member);

            QList<ShapeItem> shapeItems;
            QPainterPath circlePath;
            QPainterPath squarePath;
            QPainterPath trianglePath;

            QPoint previousPosition;
            ShapeItem *itemInMotion;

            QToolButton *newCircleButton;
            QToolButton *newSquareButton;
            QToolButton *newTriangleButton;
        };

        #endif