/****************************************************************************
** $Id: qdragobject.h,v 2.21.2.2 1998/08/19 16:02:29 agulbra Exp $
**
** Definition of QDragObject
**
** Copyright (C) 1992-1999 Troll Tech AS. All rights reserved.
**
** This file is part of Qt Free Edition, version 1.45.
**
** See the file LICENSE included in the distribution for the usage
** and distribution terms, or http://www.troll.no/free-license.html.
**
** IMPORTANT NOTE: You may NOT copy this file or any part of it into
** your own programs or libraries.
**
** Please see http://www.troll.no/pricing.html for information about
** Qt Professional Edition, which is this same library but with a
** license which allows creation of commercial/proprietary software.
**
*****************************************************************************/
#ifndef QDRAGOBJECT_H
#define QDRAGOBJECT_H
struct QDragData;
struct QStoredDragData;
class QWidget;
#ifndef QT_H
#include "qobject.h"
#include "qimage.h"
#include "qstrlist.h"
#endif // QT_H
class Q_EXPORT QDragObject: public QObject {
Q_OBJECT
public:
QDragObject( QWidget * dragSource = 0, const char * name = 0 );
~QDragObject();
bool drag();
bool dragMove();
void dragCopy();
virtual bool provides(const char*) const;
virtual const char * format(int) const=0;
virtual QByteArray encodedData(const char*) const=0;
void setPixmap(QPixmap);
void setPixmap(QPixmap, QPoint hotspot);
QPixmap pixmap() const;
QPoint pixmapHotSpot() const;
QWidget * source();
enum DragMode { DragDefault, DragCopy, DragMove, DragCopyOrMove };
protected:
virtual bool drag(DragMode);
private:
QDragData * d;
};
class Q_EXPORT QStoredDrag: public QDragObject {
Q_OBJECT
QStoredDragData * d;
public:
QStoredDrag( const char * mimeType,
QWidget * dragSource = 0, const char * name = 0 );
~QStoredDrag();
void setEncodedData( const QByteArray & );
const char * format(int i) const;
virtual QByteArray encodedData(const char*) const;
};
class Q_EXPORT QTextDrag: public QStoredDrag {
Q_OBJECT
public:
QTextDrag( const char *,
QWidget * dragSource = 0, const char * name = 0 );
QTextDrag( QWidget * dragSource = 0, const char * name = 0 );
~QTextDrag();
void setText( const char * );
static bool canDecode( QDragMoveEvent* e );
static bool decode( QDropEvent* e, QString& s );
};
class Q_EXPORT QImageDrag: public QDragObject {
Q_OBJECT
QImage img;
QStrList ofmts;
public:
QImageDrag( QImage image,
QWidget * dragSource = 0, const char * name = 0 );
QImageDrag( QWidget * dragSource = 0, const char * name = 0 );
~QImageDrag();
void setImage( QImage image );
const char * format(int i) const;
virtual QByteArray encodedData(const char*) const;
static bool canDecode( QDragMoveEvent* e );
static bool decode( QDropEvent* e, QImage& i );
static bool decode( QDropEvent* e, QPixmap& i );
};
class Q_EXPORT QUrlDrag: public QStoredDrag {
Q_OBJECT
public:
QUrlDrag( QStrList urls,
QWidget * dragSource = 0, const char * name = 0 );
QUrlDrag( QWidget * dragSource = 0, const char * name = 0 );
~QUrlDrag();
void setUrls( QStrList urls );
static QString urlToLocalFile(const char*);
static bool canDecode( QDragMoveEvent* e );
static bool decode( QDropEvent* e, QStrList& i );
static bool decodeLocalFiles( QDropEvent* e, QStrList& i );
};
// QDragManager is not part of the public API. It is defined in a
// header file simply so different .cpp files can implement different
// member functions.
//
class Q_EXPORT QDragManager: public QObject {
Q_OBJECT
private:
QDragManager();
~QDragManager();
// only friend classes can use QDragManager.
friend class QDragObject;
bool eventFilter( QObject *, QEvent * );
bool drag( QDragObject *, QDragObject::DragMode );
void cancel();
void move( const QPoint & );
void drop();
void updatePixmap();
private:
QDragObject * object;
QWidget * dragSource;
QWidget * dropWidget;
bool beingCancelled;
bool restoreCursor;
bool willDrop;
QPixmap *pm_cursor;
int n_cursor;
};
#endif
| Copyright © 1999 Troll Tech | Trademarks | Qt version 1.45
|