just some directory renaming
[toast/confclerk.git] / src / mvc / delegate.h
1 #ifndef DELEGATE_H
2 #define DELEGATE_H
3
4 #include <QItemDelegate>
5 #include <QTreeView>
6 #include <QPointer>
7
8 class Delegate : public QItemDelegate
9 {
10     Q_OBJECT
11
12     public:
13
14         enum ControlId
15         {
16             ControlNone = 0,
17             FavouriteControl,
18             AlarmControl
19         };
20
21         class Control
22         {
23             public:
24                 Control(ControlId aControlId, const QString &aImageName)
25                     : mId(aControlId)
26                     , mImage(new QImage(aImageName))
27                     , mDrawPoint(QPoint(0,0))
28                 { }
29                 inline QImage *image() const { return mImage; }
30                 inline void setDrawPoint(const QPoint &aPoint) { mDrawPoint = aPoint; }
31                 inline QPoint drawPoint(const QRect &aRect) const // for painter to draw Control
32                 {
33                     return QPoint(aRect.x()+aRect.width(),aRect.y()) + mDrawPoint;
34                 }
35                 inline QRect drawRect(const QRect &aRect) const // helper for determining if Control was clicked
36                 {
37                     return QRect(drawPoint(aRect), drawPoint(aRect)+QPoint(mImage->size().width(),mImage->size().height()));
38                 }
39             private:
40                 ControlId mId;
41                 QImage *mImage;
42                 QPoint mDrawPoint; // relative 'start-drawing' position (may hold negative values)
43         };
44
45         Delegate(QTreeView *aParent); // the delegate 'owner' has to be specified in the constructor - it's used to obtain visualRect of selected item/index
46         ~Delegate();
47
48         void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const;
49         QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const;
50         //
51         Delegate::ControlId whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const;
52         bool isPointFromRect(const QPoint &aPoint, const QRect &aRect) const;
53
54     private:
55         bool hasParent( const QModelIndex &index ) const;
56         bool isLast( const QModelIndex &index ) const;
57         bool isExpanded( const QModelIndex &index ) const;
58         void defineControls();
59
60     private:
61         QPointer<QTreeView> mViewPtr;
62         QMap<ControlId,Control*> mControls;
63 };
64
65 #endif /* DELEGATE_H */
66