lib/widget/check.c

   1 /*
   2    Widgets for the Midnight Commander
   3
   4    Copyright (C) 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
   5    2004, 2005, 2006, 2007, 2009, 2010, 2011
   6    The Free Software Foundation, Inc.
   7
   8    Authors:
   9    Radek Doulik, 1994, 1995
  10    Miguel de Icaza, 1994, 1995
  11    Jakub Jelinek, 1995
  12    Andrej Borsenkow, 1996
  13    Norbert Warmuth, 1997
  14    Andrew Borodin <aborodin@vmail.ru>, 2009, 2010
  15
  16    This file is part of the Midnight Commander.
  17
  18    The Midnight Commander is free software: you can redistribute it
  19    and/or modify it under the terms of the GNU General Public License as
  20    published by the Free Software Foundation, either version 3 of the License,
  21    or (at your option) any later version.
  22
  23    The Midnight Commander is distributed in the hope that it will be useful,
  24    but WITHOUT ANY WARRANTY; without even the implied warranty of
  25    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  26    GNU General Public License for more details.
  27
  28    You should have received a copy of the GNU General Public License
  29    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  30  */
  31
  32 /** \file check.c
  33  *  \brief Source: WCheck widget (checkbutton)
  34  */
  35
  36 #include <config.h>
  37
  38 #include <stdlib.h>
  39
  40 #include "lib/global.h"
  41
  42 #include "lib/tty/tty.h"
  43 #include "lib/tty/mouse.h"
  44 #include "lib/widget.h"
  45
  46 /*** global variables ****************************************************************************/
  47
  48 /*** file scope macro definitions ****************************************************************/
  49
  50 /*** file scope type declarations ****************************************************************/
  51
  52 /*** file scope variables ************************************************************************/
  53
  54 /*** file scope functions ************************************************************************/
  55
  56 static cb_ret_t
  57 check_callback (Widget * w, widget_msg_t msg, int parm)
  58 {
  59     WCheck *c = (WCheck *) w;
  60     Dlg_head *h = w->owner;
  61
  62     switch (msg)
  63     {
  64     case WIDGET_HOTKEY:
  65         if (c->text.hotkey != NULL)
  66         {
  67             if (g_ascii_tolower ((gchar) c->text.hotkey[0]) == parm)
  68             {
  69                 check_callback (w, WIDGET_KEY, ' ');    /* make action */
  70                 return MSG_HANDLED;
  71             }
  72         }
  73         return MSG_NOT_HANDLED;
  74
  75     case WIDGET_KEY:
  76         if (parm != ' ')
  77             return MSG_NOT_HANDLED;
  78         c->state ^= C_BOOL;
  79         c->state ^= C_CHANGE;
  80         h->callback (h, w, DLG_ACTION, 0, NULL);
  81         check_callback (w, WIDGET_FOCUS, ' ');
  82         return MSG_HANDLED;
  83
  84     case WIDGET_CURSOR:
  85         widget_move (c, 0, 1);
  86         return MSG_HANDLED;
  87
  88     case WIDGET_FOCUS:
  89     case WIDGET_UNFOCUS:
  90     case WIDGET_DRAW:
  91         widget_selectcolor (w, msg == WIDGET_FOCUS, FALSE);
  92         widget_move (c, 0, 0);
  93         tty_print_string ((c->state & C_BOOL) ? "[x] " : "[ ] ");
  94         hotkey_draw (w, c->text, msg == WIDGET_FOCUS);
  95         return MSG_HANDLED;
  96
  97     case WIDGET_DESTROY:
  98         release_hotkey (c->text);
  99         return MSG_HANDLED;
 100
 101     default:
 102         return default_proc (msg, parm);
 103     }
 104 }
 105
 106 /* --------------------------------------------------------------------------------------------- */
 107
 108 static int
 109 check_event (Gpm_Event * event, void *data)
 110 {
 111     Widget *w = WIDGET (data);
 112
 113     if (!mouse_global_in_widget (event, w))
 114         return MOU_UNHANDLED;
 115
 116     if ((event->type & (GPM_DOWN | GPM_UP)) != 0)
 117     {
 118         dlg_select_widget (w);
 119         if ((event->type & GPM_UP) != 0)
 120         {
 121             check_callback (w, WIDGET_KEY, ' ');
 122             check_callback (w, WIDGET_FOCUS, 0);
 123             w->owner->callback (w->owner, w, DLG_POST_KEY, ' ', NULL);
 124         }
 125     }
 126
 127     return MOU_NORMAL;
 128 }
 129
 130 /* --------------------------------------------------------------------------------------------- */
 131 /*** public functions ****************************************************************************/
 132 /* --------------------------------------------------------------------------------------------- */
 133
 134 WCheck *
 135 check_new (int y, int x, int state, const char *text)
 136 {
 137     WCheck *c;
 138     Widget *w;
 139
 140     c = g_new (WCheck, 1);
 141     w = WIDGET (c);
 142     c->text = parse_hotkey (text);
 143     init_widget (w, y, x, 1, 4 + hotkey_width (c->text), check_callback, check_event);
 144     /* 4 is width of "[X] " */
 145     c->state = state ? C_BOOL : 0;
 146     widget_want_hotkey (w, TRUE);
 147
 148     return c;
 149 }
 150
 151 /* --------------------------------------------------------------------------------------------- */