| 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 | FavouriteControlOn, |
|---|
| 18 | FavouriteControlOff, |
|---|
| 19 | AlarmControlOn, |
|---|
| 20 | AlarmControlOff, |
|---|
| 21 | MapControl, |
|---|
| 22 | WarningControlOn, |
|---|
| 23 | WarningControlOff |
|---|
| 24 | }; |
|---|
| 25 | |
|---|
| 26 | class Control |
|---|
| 27 | { |
|---|
| 28 | public: |
|---|
| 29 | Control(ControlId aControlId, const QString &aImageName) |
|---|
| 30 | : mId(aControlId) |
|---|
| 31 | , mImage(new QImage(aImageName)) |
|---|
| 32 | , mDrawPoint(QPoint(0,0)) |
|---|
| 33 | { } |
|---|
| 34 | inline QImage *image() const { return mImage; } |
|---|
| 35 | inline void setDrawPoint(const QPoint &aPoint) { mDrawPoint = aPoint; } |
|---|
| 36 | inline QPoint drawPoint(const QRect &aRect = QRect()) const // for painter to draw Control |
|---|
| 37 | { |
|---|
| 38 | if(aRect == QRect()) // null rectangle |
|---|
| 39 | return mDrawPoint; // returns relative drawing point |
|---|
| 40 | else |
|---|
| 41 | return QPoint(aRect.x()+aRect.width(),aRect.y()) + mDrawPoint; // returns absolute drawing point |
|---|
| 42 | } |
|---|
| 43 | inline QRect drawRect(const QRect &aRect) const // helper for determining if Control was clicked |
|---|
| 44 | { |
|---|
| 45 | return QRect(drawPoint(aRect), drawPoint(aRect)+QPoint(mImage->size().width(),mImage->size().height())); |
|---|
| 46 | } |
|---|
| 47 | private: |
|---|
| 48 | ControlId mId; |
|---|
| 49 | QImage *mImage; |
|---|
| 50 | QPoint mDrawPoint; // relative 'start-drawing' position (may hold negative values) |
|---|
| 51 | }; |
|---|
| 52 | |
|---|
| 53 | Delegate(QTreeView *aParent); // the delegate 'owner' has to be specified in the constructor - it's used to obtain visualRect of selected item/index |
|---|
| 54 | ~Delegate(); |
|---|
| 55 | |
|---|
| 56 | void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const; |
|---|
| 57 | QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const; |
|---|
| 58 | // |
|---|
| 59 | Delegate::ControlId whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const; |
|---|
| 60 | bool isPointFromRect(const QPoint &aPoint, const QRect &aRect) const; |
|---|
| 61 | |
|---|
| 62 | private: |
|---|
| 63 | bool hasParent( const QModelIndex &index ) const; |
|---|
| 64 | bool isLast( const QModelIndex &index ) const; |
|---|
| 65 | bool isExpanded( const QModelIndex &index ) const; |
|---|
| 66 | void defineControls(); |
|---|
| 67 | // TODO: the better place for these methods would be 'eventmodel' |
|---|
| 68 | // they are used in 'paint' method and so it's better to obtain number of |
|---|
| 69 | // favourities/alarms once when the data has changed and not to call |
|---|
| 70 | // these methods which iterate over all Events in corresponding group |
|---|
| 71 | // every time it requires them |
|---|
| 72 | int numberOfFavourities(const QModelIndex &index) const; |
|---|
| 73 | int numberOfAlarms(const QModelIndex &index) const; |
|---|
| 74 | bool hasTimeConflict(const QModelIndex &index, const QModelIndex &parent) const; |
|---|
| 75 | |
|---|
| 76 | private: |
|---|
| 77 | QPointer<QTreeView> mViewPtr; |
|---|
| 78 | QMap<ControlId,Control*> mControls; |
|---|
| 79 | }; |
|---|
| 80 | |
|---|
| 81 | #endif /* DELEGATE_H */ |
|---|
| 82 | |
|---|
