mc/lib/widget/radio.c

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/*
Widgets for the Midnight Commander
Copyright (C) 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
2004, 2005, 2006, 2007, 2009, 2010, 2011
The Free Software Foundation, Inc.
Authors:
Radek Doulik, 1994, 1995
Miguel de Icaza, 1994, 1995
Jakub Jelinek, 1995
Andrej Borsenkow, 1996
Norbert Warmuth, 1997
Andrew Borodin <aborodin@vmail.ru>, 2009, 2010
This file is part of the Midnight Commander.
The Midnight Commander is free software: you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
The Midnight Commander is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \file radio.c
* \brief Source: WRadui widget (radiobuttons)
*/
#include <config.h>
#include <stdlib.h>
#include "lib/global.h"
#include "lib/tty/tty.h"
#include "lib/tty/mouse.h"
#include "lib/widget.h"
/*** global variables ****************************************************************************/
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/*** file scope variables ************************************************************************/
/*** file scope functions ************************************************************************/
static cb_ret_t
radio_callback (Widget * w, widget_msg_t msg, int parm)
{
WRadio *r = (WRadio *) w;
int i;
Dlg_head *h = w->owner;
switch (msg)
{
case WIDGET_HOTKEY:
{
for (i = 0; i < r->count; i++)
{
if (r->texts[i].hotkey != NULL)
{
int c = g_ascii_tolower ((gchar) r->texts[i].hotkey[0]);
if (c != parm)
continue;
r->pos = i;
/* Take action */
radio_callback (w, WIDGET_KEY, ' ');
return MSG_HANDLED;
}
}
}
return MSG_NOT_HANDLED;
case WIDGET_KEY:
switch (parm)
{
case ' ':
r->sel = r->pos;
h->callback (h, w, DLG_ACTION, 0, NULL);
radio_callback (w, WIDGET_FOCUS, ' ');
return MSG_HANDLED;
case KEY_UP:
case KEY_LEFT:
if (r->pos > 0)
{
r->pos--;
return MSG_HANDLED;
}
return MSG_NOT_HANDLED;
case KEY_DOWN:
case KEY_RIGHT:
if (r->count - 1 > r->pos)
{
r->pos++;
return MSG_HANDLED;
}
}
return MSG_NOT_HANDLED;
case WIDGET_CURSOR:
h->callback (h, w, DLG_ACTION, 0, NULL);
radio_callback (w, WIDGET_FOCUS, ' ');
widget_move (r, r->pos, 1);
return MSG_HANDLED;
case WIDGET_UNFOCUS:
case WIDGET_FOCUS:
case WIDGET_DRAW:
for (i = 0; i < r->count; i++)
{
const gboolean focused = (i == r->pos && msg == WIDGET_FOCUS);
widget_selectcolor (w, focused, FALSE);
widget_move (r, i, 0);
tty_draw_hline (w->y + i, w->x, ' ', w->cols);
tty_print_string ((r->sel == i) ? "(*) " : "( ) ");
hotkey_draw (w, r->texts[i], focused);
}
return MSG_HANDLED;
case WIDGET_DESTROY:
for (i = 0; i < r->count; i++)
release_hotkey (r->texts[i]);
g_free (r->texts);
return MSG_HANDLED;
default:
return default_proc (msg, parm);
}
}
/* --------------------------------------------------------------------------------------------- */
static int
radio_event (Gpm_Event * event, void *data)
{
Widget *w = WIDGET (data);
if (!mouse_global_in_widget (event, w))
return MOU_UNHANDLED;
if ((event->type & (GPM_DOWN | GPM_UP)) != 0)
{
WRadio *r = (WRadio *) data;
Gpm_Event local;
local = mouse_get_local (event, w);
r->pos = local.y - 1;
dlg_select_widget (w);
if ((event->type & GPM_UP) != 0)
{
radio_callback (w, WIDGET_KEY, ' ');
w->owner->callback (w->owner, w, DLG_POST_KEY, ' ', NULL);
}
}
return MOU_NORMAL;
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
WRadio *
radio_new (int y, int x, int count, const char **texts)
{
WRadio *r;
Widget *w;
int i, wmax = 0;
r = g_new (WRadio, 1);
w = WIDGET (r);
/* Compute the longest string */
r->texts = g_new (hotkey_t, count);
for (i = 0; i < count; i++)
{
int width;
r->texts[i] = parse_hotkey (texts[i]);
width = hotkey_width (r->texts[i]);
wmax = max (width, wmax);
}
init_widget (w, y, x, count, 4 + wmax, radio_callback, radio_event);
/* 4 is width of "(*) " */
r->state = 1;
r->pos = 0;
r->sel = 0;
r->count = count;
widget_want_hotkey (w, TRUE);
return r;
}
/* --------------------------------------------------------------------------------------------- */