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42 #include "private/qdeclarativelayoutitem_p.h"
51 \qmlclass LayoutItem QDeclarativeLayoutItem
52 \ingroup qml-utility-elements
54 \brief The LayoutItem element allows declarative UI elements to be placed inside Qt's Graphics View layouts.
56 LayoutItem is a variant of \l Item with additional size hint properties. These properties provide the size hints
57 necessary for items to work in conjunction with Qt \l{Graphics View Framework}{Graphics View} layout classes
58 such as QGraphicsLinearLayout and QGraphicsGridLayout. The Qt layout mechanisms will resize the LayoutItem as appropriate,
59 taking its size hints into account, and you can propagate this to the other elements in your UI via anchors and bindings.
61 This is a QGraphicsLayoutItem subclass, and its properties merely expose the QGraphicsLayoutItem functionality to QML.
63 The \l{declarative/cppextensions/qgraphicslayouts/layoutitem}{LayoutItem example}
64 demonstrates how a LayoutItem can be used within a \l{Graphics View Framework}{Graphics View}
69 \qmlproperty QSizeF LayoutItem::maximumSize
71 The maximumSize property can be set to specify the maximum desired size of this LayoutItem
75 \qmlproperty QSizeF LayoutItem::minimumSize
77 The minimumSize property can be set to specify the minimum desired size of this LayoutItem
81 \qmlproperty QSizeF LayoutItem::preferredSize
83 The preferredSize property can be set to specify the preferred size of this LayoutItem
86 QDeclarativeLayoutItem::QDeclarativeLayoutItem(QDeclarativeItem* parent)
87 : QDeclarativeItem(parent), m_maximumSize(INT_MAX,INT_MAX), m_minimumSize(0,0), m_preferredSize(0,0)
89 setGraphicsItem(this);
92 void QDeclarativeLayoutItem::setGeometry(const QRectF & rect)
96 setWidth(rect.width());
97 setHeight(rect.height());
100 QSizeF QDeclarativeLayoutItem::sizeHint(Qt::SizeHint w, const QSizeF &constraint) const
102 Q_UNUSED(constraint);
103 if(w == Qt::MinimumSize){
104 return m_minimumSize;
105 }else if(w == Qt::MaximumSize){
106 return m_maximumSize;
108 return m_preferredSize;