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Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: dnd.h
	3	// Purpose: declaration of the wxDropTarget class
	4	// Author: Robert Roebling
	5	// RCS-ID: $Id$
	6	// Copyright: (c) 1998 Vadim Zeitlin, Robert Roebling
	7	// Licence: wxWindows license
	8	///////////////////////////////////////////////////////////////////////////////
	9
	10
	11	#ifndef __GTKDNDH__
	12	#define __GTKDNDH__
	13
	14	#ifdef __GNUG__
	15	#pragma interface
	16	#endif
	17
	18	#include "wx/defs.h"
	19	#include "wx/object.h"
	20	#include "wx/string.h"
	21	#include "wx/dataobj.h"
	22	#include "wx/cursor.h"
	23
	24	//-------------------------------------------------------------------------
	25	// conditional compilation
	26	//-------------------------------------------------------------------------
	27
	28	#if (GTK_MINOR_VERSION == 1)
	29	#if (GTK_MICRO_VERSION >= 3)
	30	#define NEW_GTK_DND_CODE
	31	#endif
	32	#endif
	33
	34	//-------------------------------------------------------------------------
	35	// classes
	36	//-------------------------------------------------------------------------
	37
	38	class wxWindow;
	39
	40	class wxDropTarget;
	41	class wxTextDropTarget;
	42	class wxFileDropTarget;
	43
	44	class wxDropSource;
	45
	46	//-------------------------------------------------------------------------
	47	// wxDropTarget
	48	//-------------------------------------------------------------------------
	49
	50	class wxDropTarget: public wxObject
	51	{
	52	public:
	53
	54	wxDropTarget();
	55	~wxDropTarget();
	56
	57	virtual void OnEnter() { }
	58	virtual void OnLeave() { }
	59	virtual bool OnDrop( long x, long y, const void *data, size_t size ) = 0;
	60
	61	// Override these to indicate what kind of data you support:
	62
	63	virtual size_t GetFormatCount() const = 0;
	64	virtual wxDataFormat GetFormat(size_t n) const = 0;
	65
	66	// implementation
	67
	68	void RegisterWidget( GtkWidget *widget );
	69	void UnregisterWidget( GtkWidget *widget );
	70	};
	71
	72	//-------------------------------------------------------------------------
	73	// wxTextDropTarget
	74	//-------------------------------------------------------------------------
	75
	76	class wxTextDropTarget: public wxDropTarget
	77	{
	78	public:
	79
	80	wxTextDropTarget() {};
	81	virtual bool OnDrop( long x, long y, const void *data, size_t size );
	82	virtual bool OnDropText( long x, long y, const char *psz );
	83
	84	protected:
	85
	86	virtual size_t GetFormatCount() const;
	87	virtual wxDataFormat GetFormat(size_t n) const;
	88	};
	89
	90	// ----------------------------------------------------------------------------
	91	// A drop target which accepts files (dragged from File Manager or Explorer)
	92	// ----------------------------------------------------------------------------
	93
	94	class wxFileDropTarget: public wxDropTarget
	95	{
	96	public:
	97
	98	wxFileDropTarget() {};
	99
	100	virtual bool OnDrop( long x, long y, const void *data, size_t size );
	101	virtual bool OnDropFiles( long x, long y,
	102	size_t nFiles, const char * const aszFiles[] );
	103
	104	protected:
	105
	106	virtual size_t GetFormatCount() const;
	107	virtual wxDataFormat GetFormat(size_t n) const;
	108	};
	109
	110	//-------------------------------------------------------------------------
	111	// wxDropSource
	112	//-------------------------------------------------------------------------
	113
	114	enum wxDragResult
	115	{
	116	wxDragError, // error prevented the d&d operation from completing
	117	wxDragNone, // drag target didn't accept the data
	118	wxDragCopy, // the data was successfully copied
	119	wxDragMove, // the data was successfully moved
	120	wxDragCancel // the operation was cancelled by user (not an error)
	121	};
	122
	123	class wxDropSource: public wxObject
	124	{
	125	public:
	126
	127	wxDropSource( wxWindow *win );
	128	wxDropSource( wxDataObject &data, wxWindow *win );
	129
	130	~wxDropSource(void);
	131
	132	void SetData( wxDataObject &data );
	133	wxDragResult DoDragDrop( bool bAllowMove = FALSE );
	134
	135	virtual bool GiveFeedback( wxDragResult WXUNUSED(effect), bool WXUNUSED(bScrolling) ) { return TRUE; };
	136
	137	// implementation
	138
	139	void RegisterWindow(void);
	140	void UnregisterWindow(void);
	141
	142	GtkWidget *m_widget;
	143	wxWindow *m_window;
	144	wxDragResult m_retValue;
	145	wxDataObject *m_data;
	146
	147	wxCursor m_defaultCursor;
	148	wxCursor m_goaheadCursor;
	149	};
	150
	151	#endif
	152	//__GTKDNDH__
	153