mc/lib/tty/color.c

245 lines
7.4 KiB
C
Raw Normal View History

/*
Color setup.
Interface functions.
Copyright (C) 1994, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
2007, 2008, 2009, 2010, 2011
The Free Software Foundation, Inc.
Written by:
Andrew Borodin <aborodin@vmail.ru>, 2009
Slava Zanko <slavazanko@gmail.com>, 2009
Egmont Koblinger <egmont@gmail.com>, 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,
1998-02-27 07:54:42 +03:00
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/>.
*/
1998-02-27 07:54:42 +03:00
/** \file color.c
* \brief Source: color setup
*/
1998-02-27 07:54:42 +03:00
#include <config.h>
2005-02-08 12:04:03 +03:00
1998-02-27 07:54:42 +03:00
#include <stdio.h>
2005-02-08 12:04:03 +03:00
#include <stdlib.h>
1998-02-27 07:54:42 +03:00
#include <string.h>
#include <sys/types.h> /* size_t */
2005-02-08 12:04:03 +03:00
#include "lib/global.h"
#include "tty.h"
#include "color.h"
#include "color-internal.h"
1998-02-27 07:54:42 +03:00
/*** global variables ****************************************************************************/
1998-02-27 07:54:42 +03:00
static char *tty_color_defaults__fg = NULL;
static char *tty_color_defaults__bg = NULL;
static char *tty_color_defaults__attrs = NULL;
1998-02-27 07:54:42 +03:00
/* Set if we are actually using colors */
gboolean use_colors = FALSE;
1998-02-27 07:54:42 +03:00
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/*** file scope variables ************************************************************************/
static GHashTable *mc_tty_color__hashtable = NULL;
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
static gboolean
tty_color_free_condition_cb (gpointer key, gpointer value, gpointer user_data)
{
gboolean is_temp_color;
tty_color_pair_t *mc_color_pair;
(void) key;
is_temp_color = user_data != NULL;
mc_color_pair = (tty_color_pair_t *) value;
return (mc_color_pair->is_temp == is_temp_color);
}
/* --------------------------------------------------------------------------------------------- */
static void
tty_color_free_all (gboolean is_temp_color)
{
g_hash_table_foreach_remove (mc_tty_color__hashtable, tty_color_free_condition_cb,
is_temp_color ? GINT_TO_POINTER (1) : NULL);
}
/* --------------------------------------------------------------------------------------------- */
static gboolean
tty_color_get_next_cpn_cb (gpointer key, gpointer value, gpointer user_data)
{
size_t cp;
tty_color_pair_t *mc_color_pair;
(void) key;
cp = GPOINTER_TO_INT (user_data);
mc_color_pair = (tty_color_pair_t *) value;
return (cp == mc_color_pair->pair_index);
}
/* --------------------------------------------------------------------------------------------- */
static size_t
tty_color_get_next__color_pair_number (void)
{
const size_t cp_count = g_hash_table_size (mc_tty_color__hashtable);
size_t cp;
for (cp = 0; cp < cp_count; cp++)
if (g_hash_table_find (mc_tty_color__hashtable, tty_color_get_next_cpn_cb,
GINT_TO_POINTER (cp)) == NULL)
break;
return cp;
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
1998-02-27 07:54:42 +03:00
void
tty_init_colors (gboolean disable, gboolean force)
{
tty_color_init_lib (disable, force);
mc_tty_color__hashtable = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
}
/* --------------------------------------------------------------------------------------------- */
void
tty_colors_done (void)
{
tty_color_deinit_lib ();
g_free (tty_color_defaults__fg);
g_free (tty_color_defaults__bg);
g_free (tty_color_defaults__attrs);
g_hash_table_destroy (mc_tty_color__hashtable);
}
1998-02-27 07:54:42 +03:00
/* --------------------------------------------------------------------------------------------- */
gboolean
tty_use_colors (void)
{
return use_colors;
}
/* --------------------------------------------------------------------------------------------- */
int
tty_try_alloc_color_pair2 (const char *fg, const char *bg, const char *attrs,
gboolean is_temp_color)
{
gchar *color_pair;
tty_color_pair_t *mc_color_pair;
int ifg, ibg, attr;
if (fg == NULL || !strcmp (fg, "base"))
fg = tty_color_defaults__fg;
if (bg == NULL || !strcmp (bg, "base"))
bg = tty_color_defaults__bg;
if (attrs == NULL || !strcmp (attrs, "base"))
attrs = tty_color_defaults__attrs;
ifg = tty_color_get_index_by_name (fg);
ibg = tty_color_get_index_by_name (bg);
attr = tty_attr_get_bits (attrs);
color_pair = g_strdup_printf ("%d.%d.%d", ifg, ibg, attr);
if (color_pair == NULL)
return 0;
mc_color_pair =
(tty_color_pair_t *) g_hash_table_lookup (mc_tty_color__hashtable, (gpointer) color_pair);
if (mc_color_pair != NULL)
{
g_free (color_pair);
return mc_color_pair->pair_index;
}
mc_color_pair = g_try_new0 (tty_color_pair_t, 1);
if (mc_color_pair == NULL)
{
g_free (color_pair);
return 0;
1998-02-27 07:54:42 +03:00
}
mc_color_pair->is_temp = is_temp_color;
mc_color_pair->ifg = ifg;
mc_color_pair->ibg = ibg;
mc_color_pair->attr = attr;
mc_color_pair->pair_index = tty_color_get_next__color_pair_number ();
1998-02-27 07:54:42 +03:00
tty_color_try_alloc_pair_lib (mc_color_pair);
g_hash_table_insert (mc_tty_color__hashtable, (gpointer) color_pair, (gpointer) mc_color_pair);
return mc_color_pair->pair_index;
1998-02-27 07:54:42 +03:00
}
/* --------------------------------------------------------------------------------------------- */
int
tty_try_alloc_color_pair (const char *fg, const char *bg, const char *attrs)
{
return tty_try_alloc_color_pair2 (fg, bg, attrs, TRUE);
}
/* --------------------------------------------------------------------------------------------- */
void
tty_color_free_all_tmp (void)
{
tty_color_free_all (TRUE);
}
/* --------------------------------------------------------------------------------------------- */
void
tty_color_free_all_non_tmp (void)
{
tty_color_free_all (FALSE);
}
/* --------------------------------------------------------------------------------------------- */
void
tty_color_set_defaults (const char *fgcolor, const char *bgcolor, const char *attrs)
{
g_free (tty_color_defaults__fg);
g_free (tty_color_defaults__bg);
g_free (tty_color_defaults__attrs);
tty_color_defaults__fg = (fgcolor != NULL) ? g_strdup (fgcolor) : NULL;
tty_color_defaults__bg = (bgcolor != NULL) ? g_strdup (bgcolor) : NULL;
tty_color_defaults__attrs = (attrs != NULL) ? g_strdup (attrs) : NULL;
}
/* --------------------------------------------------------------------------------------------- */