mc/lib/widget/label.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 Free Software Foundation, Inc.
Authors: 1994, 1995 Radek Doulik
1994, 1995 Miguel de Icaza
1995 Jakub Jelinek
1996 Andrej Borsenkow
1997 Norbert Warmuth
2009, 2010 Andrew Borodin
This program 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 2 of the License, or
(at your option) any later version.
This program 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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/** \file label.c
* \brief Source: WLabel widget
*/
#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/strutil.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
label_callback (Widget * w, widget_msg_t msg, int parm)
{
WLabel *l = (WLabel *) w;
Dlg_head *h = l->widget.owner;
switch (msg)
{
case WIDGET_INIT:
return MSG_HANDLED;
/* We don't want to get the focus */
case WIDGET_FOCUS:
return MSG_NOT_HANDLED;
case WIDGET_DRAW:
{
char *p = l->text;
int y = 0;
gboolean disabled = (w->options & W_DISABLED) != 0;
if (l->text == NULL)
return MSG_HANDLED;
if (l->transparent)
tty_setcolor (disabled ? DISABLED_COLOR : DEFAULT_COLOR);
else
tty_setcolor (disabled ? DISABLED_COLOR : h->color[DLG_COLOR_NORMAL]);
while (TRUE)
{
char *q;
char c = '\0';
q = strchr (p, '\n');
if (q != NULL)
{
c = q[0];
q[0] = '\0';
}
widget_move (&l->widget, y, 0);
tty_print_string (str_fit_to_term (p, l->widget.cols, J_LEFT));
if (q == NULL)
break;
q[0] = c;
p = q + 1;
y++;
}
return MSG_HANDLED;
}
case WIDGET_DESTROY:
g_free (l->text);
return MSG_HANDLED;
default:
return default_proc (msg, parm);
}
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
WLabel *
label_new (int y, int x, const char *text)
{
WLabel *l;
int cols = 1;
int lines = 1;
if (text != NULL)
str_msg_term_size (text, &lines, &cols);
l = g_new (WLabel, 1);
init_widget (&l->widget, y, x, lines, cols, label_callback, NULL);
l->text = g_strdup (text);
l->auto_adjust_cols = TRUE;
l->transparent = FALSE;
widget_want_cursor (l->widget, FALSE);
widget_want_hotkey (l->widget, FALSE);
return l;
}
/* --------------------------------------------------------------------------------------------- */
void
label_set_text (WLabel * label, const char *text)
{
int newcols = label->widget.cols;
int newlines;
if (label->text != NULL && text != NULL && strcmp (label->text, text) == 0)
return; /* Flickering is not nice */
g_free (label->text);
if (text == NULL)
label->text = NULL;
else
{
label->text = g_strdup (text);
if (label->auto_adjust_cols)
{
str_msg_term_size (text, &newlines, &newcols);
if (newcols > label->widget.cols)
label->widget.cols = newcols;
if (newlines > label->widget.lines)
label->widget.lines = newlines;
}
}
if (label->widget.owner != NULL)
label_callback ((Widget *) label, WIDGET_DRAW, 0);
if (newcols < label->widget.cols)
label->widget.cols = newcols;
}
/* --------------------------------------------------------------------------------------------- */