///////////////////////////////////////////////////////////////////////////////
-// Name: dnd.h
+// Name: wx/gtk/dnd.h
// Purpose: declaration of the wxDropTarget class
// Author: Robert Roebling
-// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin, Robert Roebling
-// Licence: wxWindows license
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
+#ifndef _WX_GTK_DND_H_
+#define _WX_GTK_DND_H_
-#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"
#include "wx/icon.h"
-#include "wx/gdicmn.h"
-//-------------------------------------------------------------------------
-// classes
-//-------------------------------------------------------------------------
-
-class wxWindow;
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
-class wxDropTarget;
-class wxTextDropTarget;
-class wxFileDropTarget;
-class wxPrivateDropTarget;
-
-class wxDropSource;
+// 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 wxObject
+class WXDLLIMPEXP_CORE wxDropTarget: public wxDropTargetBase
{
public:
+ wxDropTarget(wxDataObject *dataObject = NULL );
- wxDropTarget();
- ~wxDropTarget();
-
- /* may be overridden to react to events */
- virtual void OnEnter();
- virtual void OnLeave();
-
- /* may be overridden to reject certain formats or drops
- on certain areas. always returns TRUE by default
- indicating that you'd accept the data from the drag. */
- virtual bool OnMove( long x, long y );
-
- /* has to be overridden to accept a drop event. call
- IsSupported() to ask which formats are available
- and then call RequestData() to indicate the format
- you request. */
- virtual bool OnDrop( long x, long y );
-
- /* this gets called once the data has actually arrived. get
- it with GetData(). this has to be overridden. */
- virtual bool OnData( long x, long y );
-
- /* called from within OnDrop() to request a certain format
- from the drop event. */
- bool RequestData( wxDataFormat format );
-
- /* called to query what formats are available */
- bool IsSupported( wxDataFormat format );
-
- /* fill data with data from the dragging source */
- bool GetData( wxDataObject *data );
-
-// implementation
-
- 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; }
-};
+ 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();
-//-------------------------------------------------------------------------
-// wxTextDropTarget
-//-------------------------------------------------------------------------
+ // Can only be called during OnXXX methods.
+ wxDataFormat GetMatchingPair();
-class wxTextDropTarget: public wxDropTarget
-{
-public:
+ // implementation
- wxTextDropTarget() {}
+ GdkAtom GTKGetMatchingPair(bool quiet = false);
+ wxDragResult GTKFigureOutSuggestedAction();
- virtual bool OnMove( long x, long y );
- virtual bool OnDrop( long x, long y );
- virtual bool OnData( long x, long y );
-
- /* you have to override OnDropData to get at the text */
- virtual bool OnDropText( long x, long y, const wxChar *text ) = 0;
-
-};
+ void GtkRegisterWidget( GtkWidget *widget );
+ void GtkUnregisterWidget( GtkWidget *widget );
-//-------------------------------------------------------------------------
-// wxPrivateDropTarget
-//-------------------------------------------------------------------------
-
-class wxPrivateDropTarget: public wxDropTarget
-{
-public:
-
- /* sets id to "application/myprogram" where "myprogram" is the
- same as wxApp->GetAppName() */
- wxPrivateDropTarget();
- /* see SetId() below for explanation */
- wxPrivateDropTarget( const wxString &id );
-
- virtual bool OnMove( long x, long y );
- virtual bool OnDrop( long x, long y );
- virtual bool OnData( long x, long y );
-
- /* you have to override OnDropData to get at the data */
- virtual bool OnDropData( long x, long y, void *data, size_t size ) = 0;
-
- /* the string ID identifies the format of clipboard or DnD data. a word
- processor would e.g. add a wxTextDataObject and a wxPrivateDataObject
- to the clipboard - the latter with the Id "application/wxword" or
- "image/png". */
- void SetId( const wxString& id ) { m_id = id; }
- wxString GetId() { return m_id; }
-
-private:
-
- wxString m_id;
-};
-
-//----------------------------------------------------------------------------
-// A drop target which accepts files (dragged from File Manager or Explorer)
-//----------------------------------------------------------------------------
-
-class wxFileDropTarget: public wxDropTarget
-{
-public:
-
- wxFileDropTarget() {}
-
- virtual bool OnMove( long x, long y );
- virtual bool OnDrop( long x, long y );
- virtual bool OnData( long x, long y );
-
- /* you have to override OnDropFiles to get at the file names */
- virtual bool OnDropFiles( long x, long y, size_t nFiles, const wxChar * const aszFiles[] ) = 0;
+ GdkDragContext *m_dragContext;
+ GtkWidget *m_dragWidget;
+ GtkSelectionData *m_dragData;
+ unsigned m_dragTime;
+ bool m_firstMotion; // gdk has no "gdk_drag_enter" event
+ void GTKSetDragContext( GdkDragContext *dc ) { m_dragContext = dc; }
+ void GTKSetDragWidget( GtkWidget *w ) { m_dragWidget = w; }
+ void GTKSetDragData( GtkSelectionData *sd ) { m_dragData = sd; }
+ void GTKSetDragTime(unsigned time) { m_dragTime = time; }
};
//-------------------------------------------------------------------------
// 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 (MSW only)
- wxDragCancel // the operation was cancelled by user (not an error)
-};
-
-class wxDropSource: public wxObject
+class WXDLLIMPEXP_CORE wxDropSource: public wxDropSourceBase
{
public:
+ // constructor. set data later with SetData()
+ wxDropSource( wxWindow *win = NULL,
+ const wxIcon © = wxNullIcon,
+ const wxIcon &move = wxNullIcon,
+ const wxIcon &none = wxNullIcon);
+
+ // constructor for setting one data object
+ wxDropSource( wxDataObject& data,
+ wxWindow *win,
+ const wxIcon © = wxNullIcon,
+ const wxIcon &move = wxNullIcon,
+ const wxIcon &none = wxNullIcon);
+
+ virtual ~wxDropSource();
+
+ // set the icon corresponding to given drag result
+ void SetIcon(wxDragResult res, const wxIcon& icon)
+ {
+ if ( res == wxDragCopy )
+ m_iconCopy = icon;
+ else if ( res == wxDragMove )
+ m_iconMove = icon;
+ else
+ m_iconNone = icon;
+ }
+
+ // start drag action
+ virtual wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly);
+
+ 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;
- /* constructor. set data later with SetData() */
- wxDropSource( wxWindow *win, const wxIcon &go = wxNullIcon, const wxIcon &stop = wxNullIcon );
-
- /* constructor for setting one data object */
- wxDropSource( wxDataObject *data, wxWindow *win, const wxIcon &go = wxNullIcon, const wxIcon &stop = wxNullIcon );
-
- /* constructor for setting several data objects via wxDataBroker */
- wxDropSource( wxDataBroker *data, wxWindow *win );
-
- ~wxDropSource();
-
- /* set several dataobjects via wxDataBroker */
- void SetData( wxDataBroker *data );
-
- /* set one dataobject */
- void SetData( wxDataObject *data );
-
- /* start drag action */
- wxDragResult DoDragDrop( bool bAllowMove = FALSE );
-
- /* override to give feedback */
- virtual bool GiveFeedback( wxDragResult WXUNUSED(effect), bool WXUNUSED(bScrolling) ) { return TRUE; }
-
- /* GTK implementation */
-
- void RegisterWindow();
- void UnregisterWindow();
-
- GtkWidget *m_widget;
- wxWindow *m_window;
- wxDragResult m_retValue;
- wxDataBroker *m_data;
-
- wxCursor m_defaultCursor;
- wxCursor m_goaheadCursor;
-
- wxIcon m_goIcon;
- wxIcon m_stopIcon;
-
- bool m_waiting;
-};
+private:
+ // common part of both ctors
+ void SetIcons(const wxIcon& copy,
+ const wxIcon& move,
+ const wxIcon& none);
-#endif
+ // GTK implementation
+ void GTKConnectDragSignals();
+ void GTKDisconnectDragSignals();
- // wxUSE_DRAG_AND_DROP
+};
-#endif
- //__GTKDNDH__
+#endif // _WX_GTK_DND_H_
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