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39
40#ifndef QGRAPHICSLAYOUTITEM_H
41#define QGRAPHICSLAYOUTITEM_H
42
43#include <QtWidgets/qtwidgetsglobal.h>
44#include <QtCore/qscopedpointer.h>
45#include <QtWidgets/qsizepolicy.h>
46#include <QtGui/qevent.h>
47
48QT_REQUIRE_CONFIG(graphicsview);
49
50QT_BEGIN_NAMESPACE
51
52class QGraphicsLayoutItemPrivate;
53class QGraphicsItem;
54class Q_WIDGETS_EXPORT QGraphicsLayoutItem
55{
56public:
57 QGraphicsLayoutItem(QGraphicsLayoutItem *parent = nullptr, bool isLayout = false);
58 virtual ~QGraphicsLayoutItem();
59
60 void setSizePolicy(const QSizePolicy &policy);
61 void setSizePolicy(QSizePolicy::Policy hPolicy, QSizePolicy::Policy vPolicy, QSizePolicy::ControlType controlType = QSizePolicy::DefaultType);
62 QSizePolicy sizePolicy() const;
63
64 void setMinimumSize(const QSizeF &size);
65 inline void setMinimumSize(qreal w, qreal h);
66 QSizeF minimumSize() const;
67 void setMinimumWidth(qreal width);
68 inline qreal minimumWidth() const;
69 void setMinimumHeight(qreal height);
70 inline qreal minimumHeight() const;
71
72 void setPreferredSize(const QSizeF &size);
73 inline void setPreferredSize(qreal w, qreal h);
74 QSizeF preferredSize() const;
75 void setPreferredWidth(qreal width);
76 inline qreal preferredWidth() const;
77 void setPreferredHeight(qreal height);
78 inline qreal preferredHeight() const;
79
80 void setMaximumSize(const QSizeF &size);
81 inline void setMaximumSize(qreal w, qreal h);
82 QSizeF maximumSize() const;
83 void setMaximumWidth(qreal width);
84 inline qreal maximumWidth() const;
85 void setMaximumHeight(qreal height);
86 inline qreal maximumHeight() const;
87
88 virtual void setGeometry(const QRectF &rect);
89 QRectF geometry() const;
90 virtual void getContentsMargins(qreal *left, qreal *top, qreal *right, qreal *bottom) const;
91 QRectF contentsRect() const;
92
93 QSizeF effectiveSizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const;
94
95 virtual void updateGeometry();
96
97 virtual bool isEmpty() const;
98 QGraphicsLayoutItem *parentLayoutItem() const;
99 void setParentLayoutItem(QGraphicsLayoutItem *parent);
100
101 bool isLayout() const;
102 QGraphicsItem *graphicsItem() const;
103 bool ownedByLayout() const;
104
105protected:
106 void setGraphicsItem(QGraphicsItem *item);
107 void setOwnedByLayout(bool ownedByLayout);
108 QGraphicsLayoutItem(QGraphicsLayoutItemPrivate &dd);
109
110 virtual QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const = 0;
111 QScopedPointer<QGraphicsLayoutItemPrivate> d_ptr;
112
113private:
114 QSizeF *effectiveSizeHints(const QSizeF &constraint) const;
115 Q_DECLARE_PRIVATE(QGraphicsLayoutItem)
116
117 friend class QGraphicsLayout;
118};
119
120#ifndef Q_CLANG_QDOC
121Q_DECLARE_INTERFACE(QGraphicsLayoutItem, "org.qt-project.Qt.QGraphicsLayoutItem")
122#endif
123
124inline void QGraphicsLayoutItem::setMinimumSize(qreal aw, qreal ah)
125{ setMinimumSize(QSizeF(aw, ah)); }
126inline void QGraphicsLayoutItem::setPreferredSize(qreal aw, qreal ah)
127{ setPreferredSize(QSizeF(aw, ah)); }
128inline void QGraphicsLayoutItem::setMaximumSize(qreal aw, qreal ah)
129{ setMaximumSize(QSizeF(aw, ah)); }
130
131inline qreal QGraphicsLayoutItem::minimumWidth() const
132{ return effectiveSizeHint(Qt::MinimumSize).width(); }
133inline qreal QGraphicsLayoutItem::minimumHeight() const
134{ return effectiveSizeHint(Qt::MinimumSize).height(); }
135
136inline qreal QGraphicsLayoutItem::preferredWidth() const
137{ return effectiveSizeHint(Qt::PreferredSize).width(); }
138inline qreal QGraphicsLayoutItem::preferredHeight() const
139{ return effectiveSizeHint(Qt::PreferredSize).height(); }
140
141inline qreal QGraphicsLayoutItem::maximumWidth() const
142{ return effectiveSizeHint(Qt::MaximumSize).width(); }
143inline qreal QGraphicsLayoutItem::maximumHeight() const
144{ return effectiveSizeHint(Qt::MaximumSize).height(); }
145
146QT_END_NAMESPACE
147
148#endif
149