lib/widget/check.c

   1 /*
   2    Widgets for the Midnight Commander
   3
   4    Copyright (C) 1994-2016
   5    Free Software Foundation, Inc.
   6
   7    Authors:
   8    Radek Doulik, 1994, 1995
   9    Miguel de Icaza, 1994, 1995
  10    Jakub Jelinek, 1995
  11    Andrej Borsenkow, 1996
  12    Norbert Warmuth, 1997
  13    Andrew Borodin <aborodin@vmail.ru>, 2009, 2010, 2013
  14
  15    This file is part of the Midnight Commander.
  16
  17    The Midnight Commander is free software: you can redistribute it
  18    and/or modify it under the terms of the GNU General Public License as
  19    published by the Free Software Foundation, either version 3 of the License,
  20    or (at your option) any later version.
  21
  22    The Midnight Commander is distributed in the hope that it will be useful,
  23    but WITHOUT ANY WARRANTY; without even the implied warranty of
  24    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25    GNU General Public License for more details.
  26
  27    You should have received a copy of the GNU General Public License
  28    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  29  */
  30
  31 /** \file check.c
  32  *  \brief Source: WCheck widget (checkbutton)
  33  */
  34
  35 #include <config.h>
  36
  37 #include <stdlib.h>
  38
  39 #include "lib/global.h"
  40
  41 #include "lib/tty/tty.h"
  42 #include "lib/tty/mouse.h"
  43 #include "lib/widget.h"
  44
  45 /*** global variables ****************************************************************************/
  46
  47 /*** file scope macro definitions ****************************************************************/
  48
  49 /*** file scope type declarations ****************************************************************/
  50
  51 /*** file scope variables ************************************************************************/
  52
  53 /*** file scope functions ************************************************************************/
  54
  55 static cb_ret_t
  56 check_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
  57 {
  58     WCheck *c = CHECK (w);
  59
  60     switch (msg)
  61     {
  62     case MSG_HOTKEY:
  63         if (c->text.hotkey != NULL)
  64         {
  65             if (g_ascii_tolower ((gchar) c->text.hotkey[0]) == parm)
  66             {
  67                 /* make action */
  68                 send_message (w, sender, MSG_KEY, ' ', data);
  69                 return MSG_HANDLED;
  70             }
  71         }
  72         return MSG_NOT_HANDLED;
  73
  74     case MSG_KEY:
  75         if (parm != ' ')
  76             return MSG_NOT_HANDLED;
  77         c->state ^= C_BOOL;
  78         c->state ^= C_CHANGE;
  79         send_message (WIDGET (w)->owner, w, MSG_ACTION, 0, NULL);
  80         send_message (w, sender, MSG_FOCUS, ' ', data);
  81         return MSG_HANDLED;
  82
  83     case MSG_CURSOR:
  84         widget_move (c, 0, 1);
  85         return MSG_HANDLED;
  86
  87     case MSG_FOCUS:
  88     case MSG_UNFOCUS:
  89     case MSG_DRAW:
  90         widget_selectcolor (w, msg == MSG_FOCUS, FALSE);
  91         widget_move (c, 0, 0);
  92         tty_print_string ((c->state & C_BOOL) ? "[x] " : "[ ] ");
  93         hotkey_draw (w, c->text, msg == MSG_FOCUS);
  94         return MSG_HANDLED;
  95
  96     case MSG_DESTROY:
  97         release_hotkey (c->text);
  98         return MSG_HANDLED;
  99
 100     default:
 101         return widget_default_callback (w, sender, msg, parm, data);
 102     }
 103 }
 104
 105 /* --------------------------------------------------------------------------------------------- */
 106
 107 static int
 108 check_event (Gpm_Event * event, void *data)
 109 {
 110     Widget *w = WIDGET (data);
 111
 112     if (!mouse_global_in_widget (event, w))
 113         return MOU_UNHANDLED;
 114
 115     if ((event->type & (GPM_DOWN | GPM_UP)) != 0)
 116     {
 117         dlg_select_widget (w);
 118         if ((event->type & GPM_UP) != 0)
 119         {
 120             send_message (w, NULL, MSG_KEY, ' ', NULL);
 121             send_message (w, NULL, MSG_FOCUS, 0, NULL);
 122             send_message (w->owner, w, MSG_POST_KEY, ' ', NULL);
 123         }
 124     }
 125
 126     return MOU_NORMAL;
 127 }
 128
 129 /* --------------------------------------------------------------------------------------------- */
 130 /*** public functions ****************************************************************************/
 131 /* --------------------------------------------------------------------------------------------- */
 132
 133 WCheck *
 134 check_new (int y, int x, int state, const char *text)
 135 {
 136     WCheck *c;
 137     Widget *w;
 138
 139     c = g_new (WCheck, 1);
 140     w = WIDGET (c);
 141     c->text = parse_hotkey (text);
 142     widget_init (w, y, x, 1, 4 + hotkey_width (c->text), check_callback, check_event);
 143     /* 4 is width of "[X] " */
 144     c->state = state ? C_BOOL : 0;
 145     widget_want_hotkey (w, TRUE);
 146
 147     return c;
 148 }
 149
 150 /* --------------------------------------------------------------------------------------------- */