1999-10-20 20:25:42 -04:00
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
// Name: wx/dnd.h
|
|
|
|
// Purpose: Drag and drop classes declarations
|
|
|
|
// Author: Vadim Zeitlin, Robert Roebling
|
|
|
|
// Modified by:
|
|
|
|
// Created: 26.05.99
|
|
|
|
// RCS-ID: $Id$
|
|
|
|
// Copyright: (c) wxWindows Team
|
|
|
|
// Licence: wxWindows license
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
1998-08-14 20:23:28 -04:00
|
|
|
#ifndef _WX_DND_H_BASE_
|
|
|
|
#define _WX_DND_H_BASE_
|
1998-05-20 10:01:55 -04:00
|
|
|
|
2002-08-31 07:29:13 -04:00
|
|
|
#if defined(__GNUG__) && !defined(__APPLE__)
|
2000-01-24 08:13:41 -05:00
|
|
|
#pragma interface "dndbase.h"
|
|
|
|
#endif
|
|
|
|
|
1999-10-20 20:25:42 -04:00
|
|
|
#include "wx/defs.h"
|
|
|
|
|
|
|
|
#if wxUSE_DRAG_AND_DROP
|
|
|
|
|
1999-05-26 18:39:42 -04:00
|
|
|
#include "wx/dataobj.h"
|
1999-10-25 11:51:37 -04:00
|
|
|
#include "wx/cursor.h"
|
1999-10-20 20:25:42 -04:00
|
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// constants
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
|
2002-04-28 10:30:54 -04:00
|
|
|
// flags for wxDropSource::DoDragDrop()
|
|
|
|
//
|
|
|
|
// NB: wxDrag_CopyOnly must be 0 (== FALSE) and wxDrag_AllowMove must be 1
|
|
|
|
// (== TRUE) for compatibility with the old DoDragDrop(bool) method!
|
|
|
|
enum
|
|
|
|
{
|
|
|
|
wxDrag_CopyOnly = 0, // allow only copying
|
|
|
|
wxDrag_AllowMove = 1, // allow moving (copying is always allowed)
|
|
|
|
wxDrag_DefaultMove = 3 // the default operation is move, not copy
|
|
|
|
};
|
|
|
|
|
1999-10-20 20:25:42 -04:00
|
|
|
// result of wxDropSource::DoDragDrop() call
|
|
|
|
enum wxDragResult
|
|
|
|
{
|
|
|
|
wxDragError, // error prevented the d&d operation from completing
|
|
|
|
wxDragNone, // drag target didn't accept the data
|
|
|
|
wxDragCopy, // the data was successfully copied
|
|
|
|
wxDragMove, // the data was successfully moved (MSW only)
|
2001-10-25 22:11:23 -04:00
|
|
|
wxDragLink, // operation is a drag-link
|
1999-10-20 20:25:42 -04:00
|
|
|
wxDragCancel // the operation was cancelled by user (not an error)
|
|
|
|
};
|
|
|
|
|
1999-10-23 19:40:55 -04:00
|
|
|
inline WXDLLEXPORT bool wxIsDragResultOk(wxDragResult res)
|
|
|
|
{
|
2001-10-25 22:11:23 -04:00
|
|
|
return res == wxDragCopy || res == wxDragMove || res == wxDragLink;
|
1999-10-23 19:40:55 -04:00
|
|
|
}
|
|
|
|
|
1999-10-20 20:25:42 -04:00
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// wxDropSource is the object you need to create (and call DoDragDrop on it)
|
|
|
|
// to initiate a drag-and-drop operation
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
class WXDLLEXPORT wxDropSourceBase
|
|
|
|
{
|
|
|
|
public:
|
1999-10-24 15:34:11 -04:00
|
|
|
wxDropSourceBase(const wxCursor &cursorCopy = wxNullCursor,
|
|
|
|
const wxCursor &cursorMove = wxNullCursor,
|
|
|
|
const wxCursor &cursorStop = wxNullCursor)
|
|
|
|
: m_cursorCopy(cursorCopy),
|
|
|
|
m_cursorMove(cursorMove),
|
|
|
|
m_cursorStop(cursorStop)
|
|
|
|
{ m_data = (wxDataObject *)NULL; }
|
1999-10-20 20:25:42 -04:00
|
|
|
virtual ~wxDropSourceBase() { }
|
|
|
|
|
|
|
|
// set the data which is transfered by drag and drop
|
1999-10-22 00:37:39 -04:00
|
|
|
void SetData(wxDataObject& data)
|
1999-10-21 09:09:06 -04:00
|
|
|
{ m_data = &data; }
|
1999-10-22 00:37:39 -04:00
|
|
|
|
1999-10-21 09:09:06 -04:00
|
|
|
wxDataObject *GetDataObject()
|
|
|
|
{ return m_data; }
|
1999-10-20 20:25:42 -04:00
|
|
|
|
1999-10-24 15:34:11 -04:00
|
|
|
// set the icon corresponding to given drag result
|
|
|
|
void SetCursor(wxDragResult res, const wxCursor& cursor)
|
|
|
|
{
|
|
|
|
if ( res == wxDragCopy )
|
|
|
|
m_cursorCopy = cursor;
|
|
|
|
else if ( res == wxDragMove )
|
|
|
|
m_cursorMove = cursor;
|
|
|
|
else
|
|
|
|
m_cursorStop = cursor;
|
|
|
|
}
|
|
|
|
|
1999-10-20 20:25:42 -04:00
|
|
|
// start drag action, see enum wxDragResult for return value description
|
|
|
|
//
|
2002-04-28 10:30:54 -04:00
|
|
|
// if flags contains wxDrag_AllowMove, moving (and only copying) data is
|
|
|
|
// allowed, if it contains wxDrag_DefaultMove (which includes the previous
|
|
|
|
// flag), it is even the default operation
|
|
|
|
virtual wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly) = 0;
|
1999-10-20 20:25:42 -04:00
|
|
|
|
|
|
|
// override to give feedback depending on the current operation result
|
1999-10-24 15:34:11 -04:00
|
|
|
// "effect" and return TRUE if you did something, FALSE to let the library
|
|
|
|
// give the default feedback
|
|
|
|
virtual bool GiveFeedback(wxDragResult WXUNUSED(effect)) { return FALSE; }
|
|
|
|
|
|
|
|
protected:
|
|
|
|
const wxCursor& GetCursor(wxDragResult res) const
|
1999-10-20 20:25:42 -04:00
|
|
|
{
|
1999-10-24 15:34:11 -04:00
|
|
|
if ( res == wxDragCopy )
|
|
|
|
return m_cursorCopy;
|
|
|
|
else if ( res == wxDragMove )
|
|
|
|
return m_cursorMove;
|
|
|
|
else
|
|
|
|
return m_cursorStop;
|
1999-10-20 20:25:42 -04:00
|
|
|
}
|
|
|
|
|
2002-04-28 10:30:54 -04:00
|
|
|
// the data we're dragging
|
1999-10-20 20:25:42 -04:00
|
|
|
wxDataObject *m_data;
|
1999-10-24 15:34:11 -04:00
|
|
|
|
|
|
|
// the cursors to use for feedback
|
2002-04-28 10:30:54 -04:00
|
|
|
wxCursor m_cursorCopy,
|
|
|
|
m_cursorMove,
|
|
|
|
m_cursorStop;
|
2003-01-02 18:38:11 -05:00
|
|
|
|
|
|
|
DECLARE_NO_COPY_CLASS(wxDropSourceBase)
|
1999-10-20 20:25:42 -04:00
|
|
|
};
|
|
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// wxDropTarget should be associated with a window if it wants to be able to
|
1999-10-20 21:58:57 -04:00
|
|
|
// receive data via drag and drop.
|
|
|
|
//
|
|
|
|
// To use this class, you should derive from wxDropTarget and implement
|
|
|
|
// OnData() pure virtual method. You may also wish to override OnDrop() if you
|
|
|
|
// want to accept the data only inside some region of the window (this may
|
|
|
|
// avoid having to copy the data to this application which happens only when
|
|
|
|
// OnData() is called)
|
1999-10-20 20:25:42 -04:00
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
class WXDLLEXPORT wxDropTargetBase
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
// ctor takes a pointer to heap-allocated wxDataObject which will be owned
|
|
|
|
// by wxDropTarget and deleted by it automatically. If you don't give it
|
|
|
|
// here, you can use SetDataObject() later.
|
1999-10-21 06:23:30 -04:00
|
|
|
wxDropTargetBase(wxDataObject *dataObject = (wxDataObject*)NULL)
|
1999-10-20 20:25:42 -04:00
|
|
|
{ m_dataObject = dataObject; }
|
|
|
|
// dtor deletes our data object
|
|
|
|
virtual ~wxDropTargetBase()
|
|
|
|
{ delete m_dataObject; }
|
|
|
|
|
|
|
|
// get/set the associated wxDataObject
|
|
|
|
wxDataObject *GetDataObject() const
|
|
|
|
{ return m_dataObject; }
|
|
|
|
void SetDataObject(wxDataObject *dataObject)
|
1999-10-22 00:37:39 -04:00
|
|
|
{ if (m_dataObject) delete m_dataObject;
|
|
|
|
m_dataObject = dataObject; }
|
1999-10-20 20:25:42 -04:00
|
|
|
|
1999-10-21 13:47:45 -04:00
|
|
|
// these functions are called when data is moved over position (x, y) and
|
|
|
|
// may return either wxDragCopy, wxDragMove or wxDragNone depending on
|
|
|
|
// what would happen if the data were dropped here.
|
|
|
|
//
|
|
|
|
// the last parameter is what would happen by default and is determined by
|
|
|
|
// the platform-specific logic (for example, under Windows it's wxDragCopy
|
|
|
|
// if Ctrl key is pressed and wxDragMove otherwise) except that it will
|
|
|
|
// always be wxDragNone if the carried data is in an unsupported format.
|
|
|
|
|
|
|
|
// called when the mouse enters the window (only once until OnLeave())
|
|
|
|
virtual wxDragResult OnEnter(wxCoord x, wxCoord y, wxDragResult def)
|
|
|
|
{ return OnDragOver(x, y, def); }
|
|
|
|
|
|
|
|
// called when the mouse moves in the window - shouldn't take long to
|
|
|
|
// execute or otherwise mouse movement would be too slow
|
|
|
|
virtual wxDragResult OnDragOver(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
|
|
|
|
wxDragResult def)
|
|
|
|
{ return def; }
|
1999-10-22 00:37:39 -04:00
|
|
|
|
1999-10-21 13:47:45 -04:00
|
|
|
// called when mouse leaves the window: might be used to remove the
|
|
|
|
// feedback which was given in OnEnter()
|
|
|
|
virtual void OnLeave() { }
|
1999-10-22 00:37:39 -04:00
|
|
|
|
1999-10-20 20:25:42 -04:00
|
|
|
// this function is called when data is dropped at position (x, y) - if it
|
|
|
|
// returns TRUE, OnData() will be called immediately afterwards which will
|
|
|
|
// allow to retrieve the data dropped.
|
|
|
|
virtual bool OnDrop(wxCoord x, wxCoord y) = 0;
|
|
|
|
|
|
|
|
// called after OnDrop() returns TRUE: you will usually just call
|
|
|
|
// GetData() from here and, probably, also refresh something to update the
|
1999-10-23 19:40:55 -04:00
|
|
|
// new data and, finally, return the code indicating how did the operation
|
|
|
|
// complete (returning default value in case of success and wxDragError on
|
|
|
|
// failure is usually ok)
|
|
|
|
virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def) = 0;
|
1999-10-20 20:25:42 -04:00
|
|
|
|
|
|
|
// may be called *only* from inside OnData() and will fill m_dataObject
|
|
|
|
// with the data from the drop source if it returns TRUE
|
|
|
|
virtual bool GetData() = 0;
|
|
|
|
|
|
|
|
protected:
|
|
|
|
wxDataObject *m_dataObject;
|
2003-01-02 18:38:11 -05:00
|
|
|
|
|
|
|
DECLARE_NO_COPY_CLASS(wxDropTargetBase)
|
1999-10-20 20:25:42 -04:00
|
|
|
};
|
|
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// include platform dependent class declarations
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
#if defined(__WXMSW__)
|
|
|
|
#include "wx/msw/ole/dropsrc.h"
|
|
|
|
#include "wx/msw/ole/droptgt.h"
|
1998-07-10 10:15:17 -04:00
|
|
|
#elif defined(__WXMOTIF__)
|
1999-10-20 20:25:42 -04:00
|
|
|
#include "wx/motif/dnd.h"
|
2002-02-05 11:34:33 -05:00
|
|
|
#elif defined(__WXX11__)
|
|
|
|
#include "wx/x11/dnd.h"
|
1998-07-10 10:15:17 -04:00
|
|
|
#elif defined(__WXGTK__)
|
1999-10-20 20:25:42 -04:00
|
|
|
#include "wx/gtk/dnd.h"
|
1998-08-14 20:23:28 -04:00
|
|
|
#elif defined(__WXMAC__)
|
1999-10-20 20:25:42 -04:00
|
|
|
#include "wx/mac/dnd.h"
|
1999-07-27 23:38:12 -04:00
|
|
|
#elif defined(__WXPM__)
|
1999-10-20 20:25:42 -04:00
|
|
|
#include "wx/os2/dnd.h"
|
1998-05-20 10:01:55 -04:00
|
|
|
#endif
|
|
|
|
|
1999-10-23 19:40:55 -04:00
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// standard wxDropTarget implementations (implemented in common/dobjcmn.cpp)
|
|
|
|
// ----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
// A simple wxDropTarget derived class for text data: you only need to
|
|
|
|
// override OnDropText() to get something working
|
|
|
|
class WXDLLEXPORT wxTextDropTarget : public wxDropTarget
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
wxTextDropTarget();
|
|
|
|
|
|
|
|
virtual bool OnDropText(wxCoord x, wxCoord y, const wxString& text) = 0;
|
|
|
|
|
|
|
|
virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
|
|
|
|
};
|
|
|
|
|
|
|
|
// A drop target which accepts files (dragged from File Manager or Explorer)
|
|
|
|
class WXDLLEXPORT wxFileDropTarget : public wxDropTarget
|
|
|
|
{
|
|
|
|
public:
|
|
|
|
wxFileDropTarget();
|
|
|
|
|
|
|
|
// parameters are the number of files and the array of file names
|
|
|
|
virtual bool OnDropFiles(wxCoord x, wxCoord y,
|
|
|
|
const wxArrayString& filenames) = 0;
|
|
|
|
|
|
|
|
virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
|
|
|
|
};
|
|
|
|
|
1999-10-20 20:25:42 -04:00
|
|
|
#endif // wxUSE_DRAG_AND_DROP
|
|
|
|
|
|
|
|
#endif // _WX_DND_H_BASE_
|