lib/focus.h

   1 /* Dia -- a diagram creation/manipulation program
   2  * Copyright (C) 1998 Alexander Larsson
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18 #ifndef FOCUS_H
  19 #define FOCUS_H
  20
  21 #include "diatypes.h"
  22
  23 struct _Focus {
  24   DiaObject *obj;
  25   Text *text;
  26   int has_focus;
  27   void *user_data; /* To be used by the object using this focus (eg. Text) */
  28
  29   /* return TRUE if modified object.
  30      Set change if object is changed. */
  31   int (*key_event)(Focus *focus, guint keysym, const gchar *str, int strlen,
  32                    ObjectChange **change);
  33 };
  34
  35 void request_focus(Focus *focus);
  36 Focus *active_focus(void);
  37 void give_focus(Focus *focus);
  38 Focus *focus_get_first_on_object(DiaObject *obj);
  39 Focus *focus_next(void);
  40 Focus *focus_previous(void);
  41 void remove_focus(void);
  42 gboolean remove_focus_object(DiaObject *obj);
  43 void reset_foci(void);
  44 DiaObject* focus_get_object(Focus *focus);
  45
  46 #endif /* FOCUS_H */
  47
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  50