xdrag.h

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/*
 *  Xdrag.h - Drag-and-drop under X.
 *
 *  Copyright (C) 2000-2001  The Exult Team
 *
 *  This program 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.
 *
 *  This program 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.
 */

#ifndef INCL_XDRAG
#define INCL_XDRAG

#include "u7drag.h"

const int max_types = 15;

/*
 *  This supports the 'drop' side of Xdnd:
 */
class Xdnd
  {
  Display *display;
  Window xwmwin;      // Gets WM window.
  Window xgamewin;    // Game window within xwmwin.
  Atom shapeid_atom;    // For drag-and-drop of shapes.
  Atom chunkid_atom;    // For chunks.
  Atom comboid_atom;    // For combos.
  Atom xdnd_aware;    // For XdndAware.
  Atom xdnd_enter;
  Atom xdnd_leave;
  Atom xdnd_position;
  Atom xdnd_drop;
  Atom xdnd_status;
  Atom xdnd_copy;
  Atom xdnd_ask;
  Atom xdnd_typelist;
  Atom xdnd_selection;
  unsigned long xdnd_version;
  int num_types;
  Atom drag_types[max_types]; // Data type atoms source can supply.
          // Current drag info:
  int lastx, lasty;   // Last mouse pos. during drag, within
          //   our window.
  int winx, winy;     // Window coords. at start of drag.
  int file, shape, frame;   // Set when a shape is being dragged.
  int chunknum;     // Set when a chunk is dragged.
  int combo_cnt;      // Set when combo is dragged.
  int combo_xtiles, combo_ytiles, combo_tiles_right, combo_tiles_below;
  struct U7_combo_data *combo;  // Combo elements (allocated);
  bool data_valid;    // True when the above is retrieved.

  Move_shape_handler_fun move_shape_handler;  // For dragging shapes.
  Move_combo_handler_fun move_combo_handler;  // For dragging combos.
  Drop_shape_handler_fun shape_handler; // For dropping shapes.
  Drop_chunk_handler_fun chunk_handler; // For dropping chunks.
  Drop_combo_handler_fun combo_handler; // For dropping combos.
public:
  Xdnd(Display *d, Window xw, Window xgw, Move_shape_handler_fun movefun,
    Move_combo_handler_fun movecmbfun,
    Drop_shape_handler_fun shapefun, Drop_chunk_handler_fun cfun,
          Drop_combo_handler_fun cmbfun);
  ~Xdnd();
  void client_msg(XClientMessageEvent& cev);
  void select_msg(XSelectionEvent& sev);
  };

#endif

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