lib/widget/check.c

   1 /* Widgets for the Midnight Commander
   2
   3    Copyright (C) 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
   4    2004, 2005, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.
   5
   6    Authors: 1994, 1995 Radek Doulik
   7    1994, 1995 Miguel de Icaza
   8    1995 Jakub Jelinek
   9    1996 Andrej Borsenkow
  10    1997 Norbert Warmuth
  11    2009, 2010 Andrew Borodin
  12
  13    This program is free software; you can redistribute it and/or modify
  14    it under the terms of the GNU General Public License as published by
  15    the Free Software Foundation; either version 2 of the License, or
  16    (at your option) any later version.
  17
  18    This program is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program; if not, write to the Free Software
  25    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  26
  27  */
  28
  29 /** \file check.c
  30  *  \brief Source: WCheck widget (checkbutton)
  31  */
  32
  33 #include <config.h>
  34
  35 #include <stdlib.h>
  36
  37 #include "lib/global.h"
  38
  39 #include "lib/tty/tty.h"
  40 #include "lib/tty/mouse.h"
  41 #include "lib/widget.h"
  42
  43 /*** global variables ****************************************************************************/
  44
  45 /*** file scope macro definitions ****************************************************************/
  46
  47 /*** file scope type declarations ****************************************************************/
  48
  49 /*** file scope variables ************************************************************************/
  50
  51 /*** file scope functions ************************************************************************/
  52
  53 static cb_ret_t
  54 check_callback (Widget * w, widget_msg_t msg, int parm)
  55 {
  56     WCheck *c = (WCheck *) w;
  57     Dlg_head *h = c->widget.owner;
  58
  59     switch (msg)
  60     {
  61     case WIDGET_HOTKEY:
  62         if (c->text.hotkey != NULL)
  63         {
  64             if (g_ascii_tolower ((gchar) c->text.hotkey[0]) == parm)
  65             {
  66                 check_callback (w, WIDGET_KEY, ' ');    /* make action */
  67                 return MSG_HANDLED;
  68             }
  69         }
  70         return MSG_NOT_HANDLED;
  71
  72     case WIDGET_KEY:
  73         if (parm != ' ')
  74             return MSG_NOT_HANDLED;
  75         c->state ^= C_BOOL;
  76         c->state ^= C_CHANGE;
  77         h->callback (h, w, DLG_ACTION, 0, NULL);
  78         check_callback (w, WIDGET_FOCUS, ' ');
  79         return MSG_HANDLED;
  80
  81     case WIDGET_CURSOR:
  82         widget_move (&c->widget, 0, 1);
  83         return MSG_HANDLED;
  84
  85     case WIDGET_FOCUS:
  86     case WIDGET_UNFOCUS:
  87     case WIDGET_DRAW:
  88         widget_selectcolor (w, msg == WIDGET_FOCUS, FALSE);
  89         widget_move (&c->widget, 0, 0);
  90         tty_print_string ((c->state & C_BOOL) ? "[x] " : "[ ] ");
  91         hotkey_draw (w, c->text, msg == WIDGET_FOCUS);
  92         return MSG_HANDLED;
  93
  94     case WIDGET_DESTROY:
  95         release_hotkey (c->text);
  96         return MSG_HANDLED;
  97
  98     default:
  99         return default_proc (msg, parm);
 100     }
 101 }
 102
 103 /* --------------------------------------------------------------------------------------------- */
 104
 105 static int
 106 check_event (Gpm_Event * event, void *data)
 107 {
 108     WCheck *c = data;
 109     Widget *w = data;
 110
 111     if ((event->type & (GPM_DOWN | GPM_UP)) != 0)
 112     {
 113         Dlg_head *h = c->widget.owner;
 114
 115         dlg_select_widget (c);
 116         if (event->type & GPM_UP)
 117         {
 118             check_callback (w, WIDGET_KEY, ' ');
 119             check_callback (w, WIDGET_FOCUS, 0);
 120             h->callback (h, w, DLG_POST_KEY, ' ', NULL);
 121             return MOU_NORMAL;
 122         }
 123     }
 124     return MOU_NORMAL;
 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
 136     c = g_new (WCheck, 1);
 137     c->text = parse_hotkey (text);
 138     init_widget (&c->widget, y, x, 1, 4 + hotkey_width (c->text), check_callback, check_event);
 139     /* 4 is width of "[X] " */
 140     c->state = state ? C_BOOL : 0;
 141     widget_want_hotkey (c->widget, TRUE);
 142
 143     return c;
 144 }