qmlistview.h

可以播放MP3,wma等文件格式的播放器

/* ;-*-c++-*-
 * 
 * qmlistview.h
 *
 * $Id: qmlistview.h,v 1.27 2002/03/31 23:52:41 kyllingstad Exp $
 * 
 * Apollo sound player: http://www.apolloplayer.org
 * Copyright(C) 2000-2002 Apollo Team.  See CREDITS file.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The GNU General Public License is also available online at:
 *
 * http://www.gnu.org/copyleft/gpl.html
 */

#ifndef QMLISTVIEW_H_INCLUDED
#define QMLISTVIEW_H_INCLUDED

#include <qlistview.h>
#include <qlist.h>
#include "qmmainwindow.h"
#include <qpoint.h>

class QDomNode;
class QTextStream;
class QTimer;
class QmDropIndicator;

/*! \file qmlistview.h
  Definition of QmListView which adds a few features to QListView.
*/

class QmListView : public QListView
{
	Q_OBJECT
public:
    enum InsertPosition
        {
            Below,
            Child
        };
    QmListView(QWidget *parent = 0, const char *name = 0);
	virtual ~QmListView();

	void 			reposition(QListViewItem *moveitem, QListViewItem *itemabove);
	void 			take(QListViewItem *item);
	QListViewItem*	at(const QPoint &p) const;
	void 			insertBelow(QListViewItem *insertitem, QListViewItem *itemabove);
    QListViewItem*  lastChild() const;
    QListViewItem*  lastItem() const;
	bool			hasSelectedItems();
	void			reorganizable(bool d);
	bool			reorganizable() { return m_Reorganizable; }
	
	void			enableSelfSave(const QString &filename);
	void			disableSelfSave();
	void			save();
	void			save(QTextStream &out);
	const QString &fileName() const;

protected:
	virtual void	contentsMousePressEvent(QMouseEvent *e);
	virtual void	contentsMouseMoveEvent(QMouseEvent *e);
	virtual void	dragMoveEvent(QDragMoveEvent *e);
	virtual void    dragEnterEvent(QDragEnterEvent *e);
	virtual void    dragLeaveEvent(QDragLeaveEvent *e);	
	virtual void	dropEvent(QDropEvent *e);
	virtual bool    canDecode(QDragMoveEvent *e);
	virtual void    startDragging();
	virtual void    stopDragging();	
	QListViewItem*  dropPos() { return m_pItemAbove; }

	virtual QList<QListViewItem>* 	selectedItems();
	bool            isParent(QListViewItem *parent, QListViewItem *item) const;
    void        insertItem( QListViewItem *parent,
                            QListViewItem *item,
                            QListViewItem *after );

private:
// 	void 		startDragging();
// 	void 		stopDragging();
	bool 		isDroppable(QListViewItem *itemabove);
	bool		isFolder(QListViewItem *item);
	QPoint		indicatorPos(const QPoint &pos);
    bool        atTopMargin( const QPoint &pos );
    bool        atBottomMargin( const QPoint &pos );
    void        moveIndicator( const QPoint &mousepos );

protected slots:
    virtual void removeSelectedItems();
	virtual void clear();
	
private slots:
    void        slotScrollView();

private:

    /*!
      The number of pixels the user must drag an item to start the DnD.
    */
#ifdef _WS_WIN_
	#define DRAG_THRESHOLD 3
#else
	static const int 	 DRAG_THRESHOLD = 3;
#endif
	QPoint		 		 m_Click;
	QmDropIndicator		*m_pDropIndicator;
	QListViewItem		*m_pItemAbove;
    InsertPosition       m_InsertPos;
	bool				 m_Reorganizable;
	QString				 m_FileName;
    QPoint               m_DragPos, m_PointerPos;
    QTimer              *m_pScrollTimer;
};

#endif // QMLISTVIEW_H_INCLUDED