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36
37#ifndef QQUICKITEMGROUP_P_H
38#define QQUICKITEMGROUP_P_H
39
40//
41// W A R N I N G
42// -------------
43//
44// This file is not part of the Qt API. It exists purely as an
45// implementation detail. This header file may change from version to
46// version without notice, or even be removed.
47//
48// We mean it.
49//
50
51#include <QtQuick/private/qquickimplicitsizeitem_p.h>
52#include <QtQuick/private/qquickitemchangelistener_p.h>
53#include <QtQuickControls2/private/qtquickcontrols2global_p.h>
54
55QT_BEGIN_NAMESPACE
56
57class Q_QUICKCONTROLS2_PRIVATE_EXPORT QQuickItemGroup : public QQuickImplicitSizeItem, protected QQuickItemChangeListener
58{
59 Q_OBJECT
60
61public:
62 explicit QQuickItemGroup(QQuickItem *parent = nullptr);
63 ~QQuickItemGroup();
64
65protected:
66 void watch(QQuickItem *item);
67 void unwatch(QQuickItem *item);
68
69 QSizeF calculateImplicitSize() const;
70 void updateImplicitSize();
71
72 void itemChange(ItemChange change, const ItemChangeData &data) override;
73 void geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry) override;
74
75 void itemImplicitWidthChanged(QQuickItem *item) override;
76 void itemImplicitHeightChanged(QQuickItem *item) override;
77};
78
79QT_END_NAMESPACE
80
81QML_DECLARE_TYPE(QQuickItemGroup)
82
83#endif // QQUICKITEMGROUP_P_H
84

source code of qtquickcontrols2/src/quickcontrols2/qquickitemgroup_p.h