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39
40#ifndef QGRAPHICSLAYOUTITEM_P_H
41#define QGRAPHICSLAYOUTITEM_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists for the convenience
48// of other Qt classes. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtWidgets/private/qtwidgetsglobal_p.h>
55#include <QtCore/QSizeF>
56#include <QtWidgets/QSizePolicy>
57
58QT_REQUIRE_CONFIG(graphicsview);
59
60QT_BEGIN_NAMESPACE
61
62class QGraphicsLayoutItem;
63class Q_AUTOTEST_EXPORT QGraphicsLayoutItemPrivate
64{
65 Q_DECLARE_PUBLIC(QGraphicsLayoutItem)
66public:
67 virtual ~QGraphicsLayoutItemPrivate();
68 QGraphicsLayoutItemPrivate(QGraphicsLayoutItem *parent, bool isLayout);
69 static QGraphicsLayoutItemPrivate *get(QGraphicsLayoutItem *q) { return q->d_func();}
70 static const QGraphicsLayoutItemPrivate *get(const QGraphicsLayoutItem *q) { return q->d_func();}
71
72 void init();
73 QSizeF *effectiveSizeHints(const QSizeF &constraint) const;
74 QGraphicsItem *parentItem() const;
75 void ensureUserSizeHints();
76 void setSize(Qt::SizeHint which, const QSizeF &size);
77 enum SizeComponent { Width, Height };
78 void setSizeComponent(Qt::SizeHint which, SizeComponent component, qreal value);
79
80 bool hasHeightForWidth() const;
81 bool hasWidthForHeight() const;
82
83 QSizePolicy sizePolicy;
84 QGraphicsLayoutItem *parent;
85
86 QSizeF *userSizeHints;
87 mutable QSizeF cachedSizeHints[Qt::NSizeHints];
88 mutable QSizeF cachedConstraint;
89 mutable QSizeF cachedSizeHintsWithConstraints[Qt::NSizeHints];
90
91 mutable quint32 sizeHintCacheDirty : 1;
92 mutable quint32 sizeHintWithConstraintCacheDirty : 1;
93 quint32 isLayout : 1;
94 quint32 ownedByLayout : 1;
95
96 QGraphicsLayoutItem *q_ptr;
97 QRectF geom;
98 QGraphicsItem *graphicsItem;
99};
100
101QT_END_NAMESPACE
102
103#endif //QGRAPHICSLAYOUTITEM_P_H
104
105

source code of qtbase/src/widgets/graphicsview/qgraphicslayoutitem_p.h