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41 
42 //
43 //  W A R N I N G
44 //  -------------
45 //
46 // This file is not part of the Qt API.  It exists for the convenience
47 // of Qt Designer.  This header
48 // file may change from version to version without notice, or even be removed.
49 //
50 // We mean it.
51 //
52 
53 #ifndef QDESIGNER_COMMAND2_H
54 #define QDESIGNER_COMMAND2_H
55 
56 #include "shared_global_p.h"
57 #include "qdesigner_formwindowcommand_p.h"
58 
59 #include <QtGui/QWidget>
60 
61 QT_BEGIN_NAMESPACE
62 
63 namespace qdesigner_internal {
64 
65 class LayoutCommand;
66 class BreakLayoutCommand;
67 
68 /* This command changes the type of a managed layout on a widget (including
69  * red layouts of type 'QLayoutWidget') into another type, maintaining the
70  * applicable properties. It does this by chaining BreakLayoutCommand and
71  * LayoutCommand, parametrizing them not to actually delete/reparent
72  * QLayoutWidget's. */
73 
74 class QDESIGNER_SHARED_EXPORT MorphLayoutCommand : public QDesignerFormWindowCommand {
75     Q_DISABLE_COPY(MorphLayoutCommand)
76 public:
77     explicit MorphLayoutCommand(QDesignerFormWindowInterface *formWindow);
78     virtual ~MorphLayoutCommand();
79 
80     bool init(QWidget *w, int newType);
81 
82     static bool canMorph(const QDesignerFormWindowInterface *formWindow, QWidget *w, int *ptrToCurrentType = 0);
83 
84     virtual void redo();
85     virtual void undo();
86 
87 private:
88     static QString formatDescription(QDesignerFormEditorInterface *core, const QWidget *w, int oldType, int newType);
89 
90     BreakLayoutCommand *m_breakLayoutCommand;
91     LayoutCommand *m_layoutCommand;
92     int m_newType;
93     QWidgetList m_widgets;
94     QWidget *m_layoutBase;
95 };
96 
97 // Change the alignment of a widget in a managed grid/box layout cell.
98 class LayoutAlignmentCommand : public QDesignerFormWindowCommand {
99     Q_DISABLE_COPY(LayoutAlignmentCommand)
100 public:
101     explicit LayoutAlignmentCommand(QDesignerFormWindowInterface *formWindow);
102 
103     bool init(QWidget *w, Qt::Alignment alignment);
104 
105     virtual void redo();
106     virtual void undo();
107 
108     // Find out alignment and return whether command is enabled.
109     static Qt::Alignment alignmentOf(const QDesignerFormEditorInterface *core, QWidget *w, bool *enabled = 0);
110 
111 private:
112     static void applyAlignment(const QDesignerFormEditorInterface *core, QWidget *w, Qt::Alignment a);
113 
114     Qt::Alignment m_newAlignment;
115     Qt::Alignment m_oldAlignment;
116     QWidget *m_widget;
117 };
118 
119 } // namespace qdesigner_internal
120 
121 QT_END_NAMESPACE
122 
123 #endif // QDESIGNER_COMMAND2_H
124