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28 
29 #ifndef LAYOUTDECORATION_H
30 #define LAYOUTDECORATION_H
31 
32 #include <QtDesigner/extension.h>
33 
34 #include <QtCore/qobject.h>
35 #include <QtCore/qpair.h>
36 
37 QT_BEGIN_NAMESPACE
38 
39 class QPoint;
40 class QLayoutItem;
41 class QWidget;
42 class QRect;
43 class QLayout;
44 
45 class QDesignerLayoutDecorationExtension
46 {
47 public:
48     enum InsertMode
49     {
50         InsertWidgetMode,
51         InsertRowMode,
52         InsertColumnMode
53     };
54 
~QDesignerLayoutDecorationExtension()55     virtual ~QDesignerLayoutDecorationExtension() {}
56 
57     virtual QList<QWidget*> widgets(QLayout *layout) const = 0;
58 
59     virtual QRect itemInfo(int index) const = 0;
60     virtual int indexOf(QWidget *widget) const = 0;
61     virtual int indexOf(QLayoutItem *item) const = 0;
62 
63     virtual InsertMode currentInsertMode() const = 0;
64     virtual int currentIndex() const = 0;
65     virtual QPair<int, int> currentCell() const = 0;
66     virtual void insertWidget(QWidget *widget, const QPair<int, int> &cell) = 0;
67     virtual void removeWidget(QWidget *widget) = 0;
68 
69     virtual void insertRow(int row) = 0;
70     virtual void insertColumn(int column) = 0;
71     virtual void simplify() = 0;
72 
73     virtual int findItemAt(const QPoint &pos) const = 0;
74     virtual int findItemAt(int row, int column) const = 0; // atm only for grid.
75 
76     virtual void adjustIndicator(const QPoint &pos, int index) = 0;
77 };
78 Q_DECLARE_EXTENSION_INTERFACE(QDesignerLayoutDecorationExtension, "org.qt-project.Qt.Designer.LayoutDecoration")
79 
80 QT_END_NAMESPACE
81 
82 #endif // LAYOUTDECORATION_H
83