1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtWidgets module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40#ifndef QGRAPHICSLAYOUT_H
41#define QGRAPHICSLAYOUT_H
42
43#include <QtWidgets/qtwidgetsglobal.h>
44#include <QtWidgets/qgraphicslayoutitem.h>
45
46QT_REQUIRE_CONFIG(graphicsview);
47
48QT_BEGIN_NAMESPACE
49
50class QGraphicsLayoutPrivate;
51class QGraphicsLayoutItem;
52class QGraphicsWidget;
53
54class Q_WIDGETS_EXPORT QGraphicsLayout : public QGraphicsLayoutItem
55{
56public:
57 QGraphicsLayout(QGraphicsLayoutItem *parent = nullptr);
58 ~QGraphicsLayout();
59
60 void setContentsMargins(qreal left, qreal top, qreal right, qreal bottom);
61 void getContentsMargins(qreal *left, qreal *top, qreal *right, qreal *bottom) const override;
62
63 void activate();
64 bool isActivated() const;
65 virtual void invalidate();
66 virtual void updateGeometry() override;
67
68 virtual void widgetEvent(QEvent *e);
69
70 virtual int count() const = 0;
71 virtual QGraphicsLayoutItem *itemAt(int i) const = 0;
72 virtual void removeAt(int index) = 0;
73
74 static void setInstantInvalidatePropagation(bool enable);
75 static bool instantInvalidatePropagation();
76protected:
77 QGraphicsLayout(QGraphicsLayoutPrivate &, QGraphicsLayoutItem *);
78 void addChildLayoutItem(QGraphicsLayoutItem *layoutItem);
79
80private:
81 Q_DISABLE_COPY(QGraphicsLayout)
82 Q_DECLARE_PRIVATE(QGraphicsLayout)
83 friend class QGraphicsWidget;
84};
85
86#ifndef Q_CLANG_QDOC
87Q_DECLARE_INTERFACE(QGraphicsLayout, "org.qt-project.Qt.QGraphicsLayout")
88#endif
89
90QT_END_NAMESPACE
91
92#endif
93