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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** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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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 QDESIGNER_COMMAND2_H
41#define QDESIGNER_COMMAND2_H
42
43#include "shared_global_p.h"
44#include "qdesigner_formwindowcommand_p.h"
45
46#include <QtWidgets/qwidget.h>
47
48QT_BEGIN_NAMESPACE
49
50namespace qdesigner_internal {
51
52class LayoutCommand;
53class BreakLayoutCommand;
54
55/* This command changes the type of a managed layout on a widget (including
56 * red layouts of type 'QLayoutWidget') into another type, maintaining the
57 * applicable properties. It does this by chaining BreakLayoutCommand and
58 * LayoutCommand, parametrizing them not to actually delete/reparent
59 * QLayoutWidget's. */
60
61class QDESIGNER_SHARED_EXPORT MorphLayoutCommand : public QDesignerFormWindowCommand {
62 Q_DISABLE_COPY_MOVE(MorphLayoutCommand)
63public:
64 explicit MorphLayoutCommand(QDesignerFormWindowInterface *formWindow);
65 ~MorphLayoutCommand() override;
66
67 bool init(QWidget *w, int newType);
68
69 static bool canMorph(const QDesignerFormWindowInterface *formWindow, QWidget *w, int *ptrToCurrentType = nullptr);
70
71 void redo() override;
72 void undo() override;
73
74private:
75 static QString formatDescription(QDesignerFormEditorInterface *core, const QWidget *w, int oldType, int newType);
76
77 BreakLayoutCommand *m_breakLayoutCommand;
78 LayoutCommand *m_layoutCommand;
79 int m_newType;
80 QWidgetList m_widgets;
81 QWidget *m_layoutBase;
82};
83
84// Change the alignment of a widget in a managed grid/box layout cell.
85class LayoutAlignmentCommand : public QDesignerFormWindowCommand {
86 Q_DISABLE_COPY_MOVE(LayoutAlignmentCommand)
87public:
88 explicit LayoutAlignmentCommand(QDesignerFormWindowInterface *formWindow);
89
90 bool init(QWidget *w, Qt::Alignment alignment);
91
92 void redo() override;
93 void undo() override;
94
95 // Find out alignment and return whether command is enabled.
96 static Qt::Alignment alignmentOf(const QDesignerFormEditorInterface *core, QWidget *w, bool *enabled = nullptr);
97
98private:
99 static void applyAlignment(const QDesignerFormEditorInterface *core, QWidget *w, Qt::Alignment a);
100
101 Qt::Alignment m_newAlignment;
102 Qt::Alignment m_oldAlignment;
103 QWidget *m_widget;
104};
105
106} // namespace qdesigner_internal
107
108QT_END_NAMESPACE
109
110#endif // QDESIGNER_COMMAND2_H
111

source code of qttools/src/designer/src/lib/shared/qdesigner_command2_p.h