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41 
42 #ifndef LAYOUTDECORATION_H
43 #define LAYOUTDECORATION_H
44 
45 #include <QtDesigner/extension.h>
46 
47 #include <QtCore/QObject>
48 #include <QtCore/QPair>
49 
50 QT_BEGIN_HEADER
51 
52 QT_BEGIN_NAMESPACE
53 
54 class QPoint;
55 class QLayoutItem;
56 class QWidget;
57 class QRect;
58 class QLayout;
59 
60 class QDesignerLayoutDecorationExtension
61 {
62 public:
63     enum InsertMode
64     {
65         InsertWidgetMode,
66         InsertRowMode,
67         InsertColumnMode
68     };
69 
~QDesignerLayoutDecorationExtension()70     virtual ~QDesignerLayoutDecorationExtension() {}
71 
72     virtual QList<QWidget*> widgets(QLayout *layout) const = 0;
73 
74     virtual QRect itemInfo(int index) const = 0;
75     virtual int indexOf(QWidget *widget) const = 0;
76     virtual int indexOf(QLayoutItem *item) const = 0;
77 
78     virtual InsertMode currentInsertMode() const = 0;
79     virtual int currentIndex() const = 0;
80     virtual QPair<int, int> currentCell() const = 0;
81     virtual void insertWidget(QWidget *widget, const QPair<int, int> &cell) = 0;
82     virtual void removeWidget(QWidget *widget) = 0;
83 
84     virtual void insertRow(int row) = 0;
85     virtual void insertColumn(int column) = 0;
86     virtual void simplify() = 0;
87 
88     virtual int findItemAt(const QPoint &pos) const = 0;
89     virtual int findItemAt(int row, int column) const = 0; // atm only for grid.
90 
91     virtual void adjustIndicator(const QPoint &pos, int index) = 0;
92 };
93 Q_DECLARE_EXTENSION_INTERFACE(QDesignerLayoutDecorationExtension, "com.trolltech.Qt.Designer.LayoutDecoration")
94 
95 QT_END_NAMESPACE
96 
97 QT_END_HEADER
98 
99 #endif // LAYOUTDECORATION_H
100