/* 
 * Copyright (C) 2000-2004 the xine project
 * 
 * This file is part of xine, a unix video player.
 * 
 * xine is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * xine is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
 *
 * $Id: dnd.h,v 1.11 2004/04/13 19:55:49 f1rmb Exp $
 *
 */

#ifndef _HAVE_XITK_DND_H
#define _HAVE_XITK_DND_H

#include "_xitk.h"

#define MAX_SUPPORTED_TYPE 2

typedef struct {
  Display             *display;
  Window               win;

  xitk_dnd_callback_t  callback;

  int                  x;
  int                  y;
  Window               dropper_toplevel;
  Window               dropper_window;
  Window               dragger_window;
  Atom                *dragger_typelist;
  Atom                 desired;
  Time                 time;

  Atom                 _XA_XdndAware;
  Atom                 _XA_XdndEnter;
  Atom                 _XA_XdndLeave;
  Atom                 _XA_XdndDrop;
  Atom                 _XA_XdndPosition;
  Atom                 _XA_XdndStatus;
  Atom                 _XA_XdndSelection;
  Atom                 _XA_XdndFinished;
  Atom                 _XA_XdndTypeList;
  Atom                 _XA_XITK_PROTOCOL_ATOM;
  Atom                 _XA_WM_DELETE_WINDOW;
  Atom                 supported[MAX_SUPPORTED_TYPE];
  Atom                 version;
} xitk_dnd_t;

/* header was ripped from xdnd's example on its page */

#define XDND_THREE 3
#define XDND_ENTER_SOURCE_WIN(e)	((e)->xclient.data.l[0])
#define XDND_ENTER_THREE_TYPES(e)	(((e)->xclient.data.l[1] & 0x1UL) == 0)
#define XDND_ENTER_THREE_TYPES_SET(e,b)	(e)->xclient.data.l[1] = ((e)->xclient.data.l[1] & ~0x1UL) | (((b) == 0) ? 0 : 0x1UL)
#define XDND_ENTER_VERSION(e)		((e)->xclient.data.l[1] >> 24)
#define XDND_ENTER_VERSION_SET(e,v)	(e)->xclient.data.l[1] = ((e)->xclient.data.l[1] & ~(0xFF << 24)) | ((v) << 24)
#define XDND_ENTER_TYPE(e,i)		((e)->xclient.data.l[2 + i])	/* i => (0, 1, 2) */

/* XdndPosition */
#define XDND_POSITION_SOURCE_WIN(e)	((e)->xclient.data.l[0])
#define XDND_POSITION_ROOT_X(e)		((e)->xclient.data.l[2] >> 16)
#define XDND_POSITION_ROOT_Y(e)		((e)->xclient.data.l[2] & 0xFFFFUL)
#define XDND_POSITION_ROOT_SET(e,x,y)	(e)->xclient.data.l[2]  = ((x) << 16) | ((y) & 0xFFFFUL)
#define XDND_POSITION_TIME(e)		((e)->xclient.data.l[3])
#define XDND_POSITION_ACTION(e)		((e)->xclient.data.l[4])

/* XdndStatus */
#define XDND_STATUS_TARGET_WIN(e)	((e)->xclient.data.l[0])
#define XDND_STATUS_WILL_ACCEPT(e)	((e)->xclient.data.l[1] & 0x1L)
#define XDND_STATUS_WILL_ACCEPT_SET(e,b) (e)->xclient.data.l[1] = ((e)->xclient.data.l[1] & ~0x1UL) | (((b) == 0) ? 0 : 0x1UL)
#define XDND_STATUS_WANT_POSITION(e)	((e)->xclient.data.l[1] & 0x2UL)
#define XDND_STATUS_WANT_POSITION_SET(e,b) (e)->xclient.data.l[1] = ((e)->xclient.data.l[1] & ~0x2UL) | (((b) == 0) ? 0 : 0x2UL)
#define XDND_STATUS_RECT_X(e)		((e)->xclient.data.l[2] >> 16)
#define XDND_STATUS_RECT_Y(e)		((e)->xclient.data.l[2] & 0xFFFFL)
#define XDND_STATUS_RECT_WIDTH(e)	((e)->xclient.data.l[3] >> 16)
#define XDND_STATUS_RECT_HEIGHT(e)	((e)->xclient.data.l[3] & 0xFFFFL)
#define XDND_STATUS_RECT_SET(e,x,y,w,h)	{(e)->xclient.data.l[2] = ((x) << 16) | ((y) & 0xFFFFUL); (e)->xclient.data.l[3] = ((w) << 16) | ((h) & 0xFFFFUL); }
#define XDND_STATUS_ACTION(e)		((e)->xclient.data.l[4])

/* XdndLeave */
#define XDND_LEAVE_SOURCE_WIN(e)	((e)->xclient.data.l[0])

/* XdndDrop */
#define XDND_DROP_SOURCE_WIN(e)		((e)->xclient.data.l[0])
#define XDND_DROP_TIME(e)		((e)->xclient.data.l[2])

/* XdndFinished */
#define XDND_FINISHED_TARGET_WIN(e)	((e)->xclient.data.l[0])

/*
 * *** DND
 */
void xitk_init_dnd(Display *display, xitk_dnd_t *);

int xitk_make_window_dnd_aware(xitk_dnd_t *, Window);

int xitk_process_client_dnd_message(xitk_dnd_t *, XEvent *);

void xitk_set_dnd_callback(xitk_dnd_t *, xitk_dnd_callback_t);
void xitk_unset_dnd_callback(xitk_dnd_t *);


#endif
