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, 2016
  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/widget.h"
  43
  44 /*** global variables ****************************************************************************/
  45
  46 /*** file scope macro definitions ****************************************************************/
  47
  48 /*** file scope type declarations ****************************************************************/
  49
  50 /*** file scope variables ************************************************************************/
  51
  52 /*** file scope functions ************************************************************************/
  53
  54 static cb_ret_t
  55 check_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
  56 {
  57     WCheck *c = CHECK (w);
  58
  59     switch (msg)
  60     {
  61     case MSG_HOTKEY:
  62         if (c->text.hotkey != NULL)
  63         {
  64             if (g_ascii_tolower ((gchar) c->text.hotkey[0]) == parm)
  65             {
  66                 /* make action */
  67                 send_message (w, sender, MSG_KEY, ' ', data);
  68                 return MSG_HANDLED;
  69             }
  70         }
  71         return MSG_NOT_HANDLED;
  72
  73     case MSG_KEY:
  74         if (parm != ' ')
  75             return MSG_NOT_HANDLED;
  76         c->state ^= C_BOOL;
  77         c->state ^= C_CHANGE;
  78         send_message (w, sender, MSG_FOCUS, ' ', data);
  79         send_message (WIDGET (w)->owner, w, MSG_NOTIFY, 0, NULL);
  80         return MSG_HANDLED;
  81
  82     case MSG_CURSOR:
  83         widget_move (c, 0, 1);
  84         return MSG_HANDLED;
  85
  86     case MSG_FOCUS:
  87     case MSG_UNFOCUS:
  88     case MSG_DRAW:
  89         widget_selectcolor (w, msg == MSG_FOCUS, FALSE);
  90         widget_move (c, 0, 0);
  91         tty_print_string ((c->state & C_BOOL) ? "[x] " : "[ ] ");
  92         hotkey_draw (w, c->text, msg == MSG_FOCUS);
  93         return MSG_HANDLED;
  94
  95     case MSG_DESTROY:
  96         release_hotkey (c->text);
  97         return MSG_HANDLED;
  98
  99     default:
 100         return widget_default_callback (w, sender, msg, parm, data);
 101     }
 102 }
 103
 104 /* --------------------------------------------------------------------------------------------- */
 105
 106 static void
 107 check_mouse_callback (Widget * w, mouse_msg_t msg, mouse_event_t * event)
 108 {
 109     (void) event;
 110
 111     switch (msg)
 112     {
 113     case MSG_MOUSE_DOWN:
 114         dlg_select_widget (w);
 115         break;
 116
 117     case MSG_MOUSE_CLICK:
 118         send_message (w, NULL, MSG_KEY, ' ', NULL);
 119         send_message (w->owner, w, MSG_POST_KEY, ' ', NULL);
 120         break;
 121
 122     default:
 123         break;
 124     }
 125 }
 126
 127 /* --------------------------------------------------------------------------------------------- */
 128 /*** public functions ****************************************************************************/
 129 /* --------------------------------------------------------------------------------------------- */
 130
 131 WCheck *
 132 check_new (int y, int x, int state, const char *text)
 133 {
 134     WCheck *c;
 135     Widget *w;
 136
 137     c = g_new (WCheck, 1);
 138     w = WIDGET (c);
 139     c->text = parse_hotkey (text);
 140     /* 4 is width of "[X] " */
 141     widget_init (w, y, x, 1, 4 + hotkey_width (c->text), check_callback, check_mouse_callback);
 142     c->state = state ? C_BOOL : 0;
 143     widget_want_cursor (w, TRUE);
 144     widget_want_hotkey (w, TRUE);
 145
 146     return c;
 147 }
 148
 149 /* --------------------------------------------------------------------------------------------- */