nlistview.h

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#ifndef NLISTVIEW_H
#define NLISTVIEW_H
//!	@addtogroup libarchos
//!	@{

#include <qpixmap.h>
#include <qscrollview.h>
#include <qstringlist.h>
class QImage;
class QLineEdit;
class NListViewData;


QImage blendIcons(const QImage &a, const QImage &b);


class NListSource : public QObject {
	Q_OBJECT

 public:
	virtual ~NListSource();
	
	virtual uint    count()                       const= 0;
	virtual QPixmap icon(uint index)              const= 0;
	virtual QString text(uint index, uint col= 0) const= 0;
	virtual int     indent(uint index)            const= 0;
	
 signals:
	        void    itemCountChanged(uint cnt);
	        void    itemsChanged(uint start, uint span);

 protected:
	        NListSource(QObject *parent, const char *name= NULL);
};


class NListView : public QScrollView {
	Q_OBJECT

 public:
	        NListView(NListSource *src, QWidget *parent, const char *name= NULL);
	virtual ~NListView();
	
	virtual NListSource* source();
	        void         setSource(NListSource *src);
	
	        uint         columns() const;
	        void         setColumns(uint cnt);
	        int          columnWidth(uint col) const;
	        void         setColumnWidth(uint col, int pixelwidth);
	
	virtual bool         select(const QString &text);
	        void         setSelection(int pos, int cnt= 1, bool ensure_visible= true, bool update= true);
	        uint         selection(uint *cnt= NULL) const;
	        QStringList  selectionList();

	virtual bool eventFilter(QObject *, QEvent *);

 public slots:
	virtual void  selectAll();
	virtual void  editSelection();
	
 signals:
	        void  selected(uint index);
	        void  activated(uint index);
	        void  selectionEdited(const QString &newtext);
	        void  resizedContents(int width, int height);

 protected slots:
	        void  ensureSelectionVisible();

 protected:
	QLineEdit *m_ledit;
	uint m_selpos, 
		m_selcnt,
		m_item_height,
		m_tapped_index;
	bool m_tapped_border;
	
	        QRect areaFor(int index, int cnt= 1) const;
	        bool  isOnText(const QPoint &pos) const;
	
	virtual void  keyPressEvent(QKeyEvent *evt);
	virtual void  resizeEvent(QResizeEvent *evt); 
	virtual void  contentsMousePressEvent(QMouseEvent *evt);
	virtual void  contentsMouseMoveEvent(QMouseEvent *evt);
	virtual void  contentsMouseDoubleClickEvent(QMouseEvent *evt);
	virtual void  drawContents(QPainter *p, int x, int y, int w, int h);
	virtual void  focusInEvent(QFocusEvent*);
	virtual void  focusOutEvent(QFocusEvent*);

 private slots:
	        void  onItemsChanged(uint start, uint span);
	        void  onItemCountChanged(uint cnt);
	        void  prepareAnimation();
	        void  animateSelection();
	        void  animate();
	
 private:
	NListViewData *m;
	NListSource *m_src;
		
	        NListView(const NListView &obj);
	        NListView& operator=(const NListView &obj);
	
	        uint  indexAt(int ypos) const;
	        void  restrictRange(int &index, int &cnt) const;
	        void  renderItem(QPainter *p, uint index, bool selected);
	        QRect selectionArea(QPainter *p) const;
};

extern QString fitString(const QFontMetrics &fm, QString s, int len);

//!	@}
#endif // NLISTVIEW_H