| 1 | #ifndef DELEGATE_H |
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| 2 | #define DELEGATE_H |
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| 3 | |
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| 4 | #include <QItemDelegate> |
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| 5 | #include <QTreeView> |
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| 6 | #include <QPointer> |
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| 7 | |
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| 8 | class Delegate : public QItemDelegate |
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| 9 | { |
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| 10 | Q_OBJECT |
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| 11 | |
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| 12 | public: |
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| 13 | |
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| 14 | enum ControlId |
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| 15 | { |
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| 16 | ControlNone = 0, |
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| 17 | FavouriteControlOn, |
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| 18 | FavouriteControlOff, |
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| 19 | AlarmControlOn, |
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| 20 | AlarmControlOff, |
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| 21 | MapControl |
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| 22 | }; |
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| 23 | |
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| 24 | class Control |
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| 25 | { |
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| 26 | public: |
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| 27 | Control(ControlId aControlId, const QString &aImageName) |
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| 28 | : mId(aControlId) |
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| 29 | , mImage(new QImage(aImageName)) |
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| 30 | , mDrawPoint(QPoint(0,0)) |
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| 31 | { } |
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| 32 | inline QImage *image() const { return mImage; } |
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| 33 | inline void setDrawPoint(const QPoint &aPoint) { mDrawPoint = aPoint; } |
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| 34 | inline QPoint drawPoint(const QRect &aRect) const // for painter to draw Control |
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| 35 | { |
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| 36 | return QPoint(aRect.x()+aRect.width(),aRect.y()) + mDrawPoint; |
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| 37 | } |
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| 38 | inline QRect drawRect(const QRect &aRect) const // helper for determining if Control was clicked |
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| 39 | { |
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| 40 | return QRect(drawPoint(aRect), drawPoint(aRect)+QPoint(mImage->size().width(),mImage->size().height())); |
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| 41 | } |
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| 42 | private: |
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| 43 | ControlId mId; |
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| 44 | QImage *mImage; |
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| 45 | QPoint mDrawPoint; // relative 'start-drawing' position (may hold negative values) |
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| 46 | }; |
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| 47 | |
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| 48 | Delegate(QTreeView *aParent); // the delegate 'owner' has to be specified in the constructor - it's used to obtain visualRect of selected item/index |
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| 49 | ~Delegate(); |
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| 50 | |
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| 51 | void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const; |
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| 52 | QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const; |
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| 53 | // |
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| 54 | Delegate::ControlId whichControlClicked(const QModelIndex &aIndex, const QPoint &aPoint) const; |
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| 55 | bool isPointFromRect(const QPoint &aPoint, const QRect &aRect) const; |
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| 56 | |
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| 57 | private: |
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| 58 | bool hasParent( const QModelIndex &index ) const; |
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| 59 | bool isLast( const QModelIndex &index ) const; |
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| 60 | bool isExpanded( const QModelIndex &index ) const; |
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| 61 | void defineControls(); |
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| 62 | |
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| 63 | private: |
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| 64 | QPointer<QTreeView> mViewPtr; |
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| 65 | QMap<ControlId,Control*> mControls; |
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| 66 | }; |
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| 67 | |
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| 68 | #endif /* DELEGATE_H */ |
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| 69 | |
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