wxWidgets/include/wx/gtk1/dnd.h

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///////////////////////////////////////////////////////////////////////////////
// Name: dnd.h
// Purpose: declaration of the wxDropTarget class
// Author: Robert Roebling
// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin, Robert Roebling
// Licence: wxWindows license
///////////////////////////////////////////////////////////////////////////////
#ifndef __GTKDNDH__
#define __GTKDNDH__
#ifdef __GNUG__
#pragma interface
#endif
#include "wx/defs.h"
#if wxUSE_DRAG_AND_DROP
#include "wx/object.h"
#include "wx/string.h"
#include "wx/dataobj.h"
#include "wx/cursor.h"
//-------------------------------------------------------------------------
// conditional compilation
//-------------------------------------------------------------------------
#if (GTK_MINOR_VERSION == 1)
#if (GTK_MICRO_VERSION >= 3)
#define NEW_GTK_DND_CODE
#endif
#endif
//-------------------------------------------------------------------------
// classes
//-------------------------------------------------------------------------
class wxWindow;
class wxDropTarget;
class wxTextDropTarget;
class wxFileDropTarget;
class wxDropSource;
//-------------------------------------------------------------------------
// wxDropTarget
//-------------------------------------------------------------------------
class wxDropTarget: public wxObject
{
public:
wxDropTarget();
~wxDropTarget();
virtual void OnEnter() { }
virtual void OnLeave() { }
virtual bool OnDrop( long x, long y, const void *data, size_t size ) = 0;
// Override these to indicate what kind of data you support:
virtual size_t GetFormatCount() const = 0;
virtual wxDataFormat GetFormat(size_t n) const = 0;
// implementation
void RegisterWidget( GtkWidget *widget );
void UnregisterWidget( GtkWidget *widget );
};
//-------------------------------------------------------------------------
// wxTextDropTarget
//-------------------------------------------------------------------------
class wxTextDropTarget: public wxDropTarget
{
public:
wxTextDropTarget() {};
virtual bool OnDrop( long x, long y, const void *data, size_t size );
virtual bool OnDropText( long x, long y, const char *psz );
protected:
virtual size_t GetFormatCount() const;
virtual wxDataFormat GetFormat(size_t n) const;
};
// ----------------------------------------------------------------------------
// A drop target which accepts files (dragged from File Manager or Explorer)
// ----------------------------------------------------------------------------
class wxFileDropTarget: public wxDropTarget
{
public:
wxFileDropTarget() {};
virtual bool OnDrop( long x, long y, const void *data, size_t size );
virtual bool OnDropFiles( long x, long y,
size_t nFiles, const char * const aszFiles[] );
protected:
virtual size_t GetFormatCount() const;
virtual wxDataFormat GetFormat(size_t n) const;
};
//-------------------------------------------------------------------------
// wxDropSource
//-------------------------------------------------------------------------
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
wxDragCancel // the operation was cancelled by user (not an error)
};
class wxDropSource: public wxObject
{
public:
wxDropSource( wxWindow *win );
wxDropSource( wxDataObject &data, wxWindow *win );
~wxDropSource(void);
void SetData( wxDataObject &data );
wxDragResult DoDragDrop( bool bAllowMove = FALSE );
virtual bool GiveFeedback( wxDragResult WXUNUSED(effect), bool WXUNUSED(bScrolling) ) { return TRUE; };
// implementation
void RegisterWindow(void);
void UnregisterWindow(void);
GtkWidget *m_widget;
wxWindow *m_window;
wxDragResult m_retValue;
wxDataObject *m_data;
wxCursor m_defaultCursor;
wxCursor m_goaheadCursor;
};
#endif
// wxUSE_DRAG_AND_DROP
#endif
//__GTKDNDH__