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
#if wxUSE_DRAG_AND_DROP
#include "wx/object.h"
#include "wx/string.h"
#include "wx/dataobj.h"
#include "wx/cursor.h"
#include "wx/icon.h"
#include "wx/gdicmn.h"
//-------------------------------------------------------------------------
// classes
//-------------------------------------------------------------------------
class wxWindow;
class wxDropTarget;
class wxTextDropTarget;
class wxFileDropTarget;
class wxDropSource;
// ----------------------------------------------------------------------------
// macros
// ----------------------------------------------------------------------------
// this macro may be used instead for wxDropSource ctor arguments: it will use
// the icon 'name' from an XPM file under GTK, but will expand to something
// else under MSW. If you don't use it, you will have to use #ifdef in the
// application code.
#define wxDROP_ICON(name) wxICON(name)
//-------------------------------------------------------------------------
// wxDropTarget
//-------------------------------------------------------------------------
class wxDropTarget: public wxDropTargetBase
{
public:
wxDropTarget(wxDataObject *dataObject = (wxDataObject*) NULL );
virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
virtual bool OnDrop(wxCoord x, wxCoord y);
virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
virtual bool GetData();
// implementation
GdkAtom GetMatchingPair();
void RegisterWidget( GtkWidget *widget );
void UnregisterWidget( GtkWidget *widget );
GdkDragContext *m_dragContext;
GtkWidget *m_dragWidget;
GtkSelectionData *m_dragData;
guint m_dragTime;
bool m_firstMotion; /* gdk has no "gdk_drag_enter" event */
void SetDragContext( GdkDragContext *dc ) { m_dragContext = dc; }
void SetDragWidget( GtkWidget *w ) { m_dragWidget = w; }
void SetDragData( GtkSelectionData *sd ) { m_dragData = sd; }
void SetDragTime( guint time ) { m_dragTime = time; }
};
//-------------------------------------------------------------------------
// wxDropSource
//-------------------------------------------------------------------------
class wxDropSource: public wxDropSourceBase
{
public:
/* constructor. set data later with SetData() */
wxDropSource( wxWindow *win = (wxWindow *)NULL,
const wxIcon &copy = wxNullIcon,
const wxIcon &move = wxNullIcon,
const wxIcon &none = wxNullIcon);
/* constructor for setting one data object */
wxDropSource( wxDataObject& data,
wxWindow *win,
const wxIcon &copy = wxNullIcon,
const wxIcon &move = wxNullIcon,
const wxIcon &none = wxNullIcon);
~wxDropSource();
/* start drag action */
virtual wxDragResult DoDragDrop( bool bAllowMove = FALSE );
/* GTK implementation */
void RegisterWindow();
void UnregisterWindow();
void PrepareIcon( int action, GdkDragContext *context );
GtkWidget *m_widget;
GtkWidget *m_iconWindow;
GdkDragContext *m_dragContext;
wxWindow *m_window;
wxDragResult m_retValue;
wxIcon m_iconCopy,
m_iconMove,
m_iconNone;
bool m_waiting;
private:
// common part of both ctors
void SetIcons(const wxIcon& copy,
const wxIcon& move,
const wxIcon& none);
};
#endif
// wxUSE_DRAG_AND_DROP
#endif
//__GTKDNDH__