mc/lib/widget/gauge.c
Slava Zanko 0138645541 Ticket 1551: Update GPL version from 2 to 3
Signed-off-by: Slava Zanko <slavazanko@gmail.com>
2011-10-18 14:08:34 +03:00

177 lines
5.3 KiB
C

/*
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 gauge.c
* \brief Source: WGauge widget (progress indicator)
*/
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include "lib/global.h"
#include "lib/tty/tty.h"
#include "lib/tty/color.h"
#include "lib/skin.h"
#include "lib/widget.h"
/*** global variables ****************************************************************************/
/*** file scope macro definitions ****************************************************************/
/* Currently width is hardcoded here for text mode */
#define gauge_len 47
/*** file scope type declarations ****************************************************************/
/*** file scope variables ************************************************************************/
/*** file scope functions ************************************************************************/
static cb_ret_t
gauge_callback (Widget * w, widget_msg_t msg, int parm)
{
WGauge *g = (WGauge *) w;
Dlg_head *h = g->widget.owner;
if (msg == WIDGET_INIT)
return MSG_HANDLED;
/* We don't want to get the focus */
if (msg == WIDGET_FOCUS)
return MSG_NOT_HANDLED;
if (msg == WIDGET_DRAW)
{
widget_move (&g->widget, 0, 0);
tty_setcolor (h->color[DLG_COLOR_NORMAL]);
if (!g->shown)
tty_printf ("%*s", gauge_len, "");
else
{
int percentage, columns;
long total = g->max;
long done = g->current;
if (total <= 0 || done < 0)
{
done = 0;
total = 100;
}
if (done > total)
done = total;
while (total > 65535)
{
total /= 256;
done /= 256;
}
percentage = (200 * done / total + 1) / 2;
columns = (2 * (gauge_len - 7) * done / total + 1) / 2;
tty_print_char ('[');
if (g->from_left_to_right)
{
tty_setcolor (GAUGE_COLOR);
tty_printf ("%*s", (int) columns, "");
tty_setcolor (h->color[DLG_COLOR_NORMAL]);
tty_printf ("%*s] %3d%%", (int) (gauge_len - 7 - columns), "", (int) percentage);
}
else
{
tty_setcolor (h->color[DLG_COLOR_NORMAL]);
tty_printf ("%*s", gauge_len - columns - 7, "");
tty_setcolor (GAUGE_COLOR);
tty_printf ("%*s", columns, "");
tty_setcolor (h->color[DLG_COLOR_NORMAL]);
tty_printf ("] %3d%%", 100 * columns / (gauge_len - 7), percentage);
}
}
return MSG_HANDLED;
}
return default_proc (msg, parm);
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
WGauge *
gauge_new (int y, int x, gboolean shown, int max, int current)
{
WGauge *g;
g = g_new (WGauge, 1);
init_widget (&g->widget, y, x, 1, gauge_len, gauge_callback, NULL);
g->shown = shown;
if (max == 0)
max = 1; /* I do not like division by zero :) */
g->max = max;
g->current = current;
g->from_left_to_right = TRUE;
widget_want_cursor (g->widget, FALSE);
widget_want_hotkey (g->widget, FALSE);
return g;
}
/* --------------------------------------------------------------------------------------------- */
void
gauge_set_value (WGauge * g, int max, int current)
{
if (g->current == current && g->max == max)
return; /* Do not flicker */
if (max == 0)
max = 1; /* I do not like division by zero :) */
g->current = current;
g->max = max;
gauge_callback ((Widget *) g, WIDGET_DRAW, 0);
}
/* --------------------------------------------------------------------------------------------- */
void
gauge_show (WGauge * g, gboolean shown)
{
if (g->shown != shown)
{
g->shown = shown;
gauge_callback ((Widget *) g, WIDGET_DRAW, 0);
}
}
/* --------------------------------------------------------------------------------------------- */