Qt Reference Documentation

# flowlayout.h Example File

graphicsview/flowlayout/flowlayout.h

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     #include <QtGui/qgraphicslayout.h>

     class FlowLayout : public QGraphicsLayout
     {
     public:
         FlowLayout();
         inline void addItem(QGraphicsLayoutItem *item);
         void insertItem(int index, QGraphicsLayoutItem *item);
         void setSpacing(Qt::Orientations o, qreal spacing);
         qreal spacing(Qt::Orientation o) const;

         // inherited functions
         void setGeometry(const QRectF &geom);

         int count() const;
         QGraphicsLayoutItem *itemAt(int index) const;
         void removeAt(int index);

     protected:
         QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const;

     private:
         qreal doLayout(const QRectF &geom, bool applyNewGeometry) const;
         QSizeF minSize(const QSizeF &constraint) const;
         QSizeF prefSize() const;
         QSizeF maxSize() const;

         QList<QGraphicsLayoutItem*> m_items;
         qreal m_spacing[2];
     };

     inline void FlowLayout::addItem(QGraphicsLayoutItem *item)
     {
         insertItem(-1, item);
     }