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 Qt Designer of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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
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16**
17** GNU General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU
19** General Public License version 3 as published by the Free Software
20** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
21** included in the packaging of this file. Please review the following
22** information to ensure the GNU General Public License requirements will
23** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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25** $QT_END_LICENSE$
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27****************************************************************************/
28
29//
30// W A R N I N G
31// -------------
32//
33// This file is not part of the Qt API. It exists for the convenience
34// of Qt Designer. This header
35// file may change from version to version without notice, or even be removed.
36//
37// We mean it.
38//
39
40#ifndef LAYOUTINFO_H
41#define LAYOUTINFO_H
42
43#include "shared_global_p.h"
44
45QT_BEGIN_NAMESPACE
46
47class QWidget;
48class QLayout;
49class QLayoutItem;
50class QDesignerFormEditorInterface;
51class QFormLayout;
52class QRect;
53class QString;
54
55namespace qdesigner_internal {
56
57class QDESIGNER_SHARED_EXPORT LayoutInfo
58{
59public:
60 enum Type
61 {
62 NoLayout,
63 HSplitter,
64 VSplitter,
65 HBox,
66 VBox,
67 Grid,
68 Form,
69 UnknownLayout // QDockWindow inside QMainWindow is inside QMainWindowLayout - it doesn't mean there is no layout
70 };
71
72 static void deleteLayout(const QDesignerFormEditorInterface *core, QWidget *widget);
73
74 // Examines the immediate layout of the widget.
75 static Type layoutType(const QDesignerFormEditorInterface *core, const QWidget *w);
76 // Examines the managed layout of the widget
77 static Type managedLayoutType(const QDesignerFormEditorInterface *core, const QWidget *w, QLayout **layout = nullptr);
78 static Type layoutType(const QDesignerFormEditorInterface *core, const QLayout *layout);
79 static Type layoutType(const QString &typeName);
80 static QString layoutName(Type t);
81
82 static QWidget *layoutParent(const QDesignerFormEditorInterface *core, QLayout *layout);
83
84 static Type laidoutWidgetType(const QDesignerFormEditorInterface *core, QWidget *widget, bool *isManaged = nullptr, QLayout **layout = nullptr);
85 static bool inline isWidgetLaidout(const QDesignerFormEditorInterface *core, QWidget *widget) { return laidoutWidgetType(core, widget) != NoLayout; }
86
87 static QLayout *managedLayout(const QDesignerFormEditorInterface *core, const QWidget *widget);
88 static QLayout *managedLayout(const QDesignerFormEditorInterface *core, QLayout *layout);
89 static QLayout *internalLayout(const QWidget *widget);
90
91 // Is it a a dummy grid placeholder created by Designer?
92 static bool isEmptyItem(QLayoutItem *item);
93};
94
95QDESIGNER_SHARED_EXPORT void getFormLayoutItemPosition(const QFormLayout *formLayout, int index, int *rowPtr, int *columnPtr = nullptr, int *rowspanPtr = nullptr, int *colspanPtr = nullptr);
96QDESIGNER_SHARED_EXPORT void formLayoutAddWidget(QFormLayout *formLayout, QWidget *w, const QRect &r, bool insert);
97} // namespace qdesigner_internal
98
99QT_END_NAMESPACE
100
101#endif // LAYOUTINFO_H
102

source code of qttools/src/designer/src/lib/shared/layoutinfo_p.h