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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 
48 QT_BEGIN_NAMESPACE
49 
50 namespace qdesigner_internal {
51 
52 class LayoutCommand;
53 class 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 
61 class QDESIGNER_SHARED_EXPORT MorphLayoutCommand : public QDesignerFormWindowCommand {
62     Q_DISABLE_COPY_MOVE(MorphLayoutCommand)
63 public:
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 
74 private:
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.
85 class LayoutAlignmentCommand : public QDesignerFormWindowCommand {
86     Q_DISABLE_COPY_MOVE(LayoutAlignmentCommand)
87 public:
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 
98 private:
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 
108 QT_END_NAMESPACE
109 
110 #endif // QDESIGNER_COMMAND2_H
111