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/*
Color setup.
Interface functions.
Copyright (C) 1994-2024
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,
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 color.c
* \brief Source: color setup
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h> /* size_t */
#include "lib/global.h"
#include "tty.h"
#include "color.h"
#include "color-internal.h"
/*** global variables ****************************************************************************/
/* *INDENT-OFF* */
static tty_color_pair_t tty_color_defaults =
{
.fg = NULL,
.bg = NULL,
.attrs = NULL,
.pair_index = 0
};
/* *INDENT-ON* */
/* Set if we are actually using colors */
gboolean use_colors = FALSE;
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/*** forward declarations (file scope functions) *************************************************/
/*** file scope variables ************************************************************************/
static GHashTable *mc_tty_color__hashtable = NULL;
/* --------------------------------------------------------------------------------------------- */
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
static void
mc_color__deinit (tty_color_pair_t * color)
{
g_free (color->fg);
g_free (color->bg);
g_free (color->attrs);
}
/* --------------------------------------------------------------------------------------------- */
static gboolean
tty_color_free_temp_cb (gpointer key, gpointer value, gpointer user_data)
{
(void) key;
(void) user_data;
return ((tty_color_lib_pair_t *) value)->is_temp;
}
/* --------------------------------------------------------------------------------------------- */
static gboolean
tty_color_get_next_cpn_cb (gpointer key, gpointer value, gpointer user_data)
{
tty_color_lib_pair_t *mc_color_pair = (tty_color_lib_pair_t *) value;
size_t cp = GPOINTER_TO_SIZE (user_data);
(void) key;
return (cp == mc_color_pair->pair_index);
}
/* --------------------------------------------------------------------------------------------- */
static size_t
tty_color_get_next__color_pair_number (void)
{
size_t cp_count, cp;
cp_count = g_hash_table_size (mc_tty_color__hashtable);
for (cp = 0; cp < cp_count; cp++)
if (g_hash_table_find (mc_tty_color__hashtable, tty_color_get_next_cpn_cb,
GSIZE_TO_POINTER (cp)) == NULL)
break;
return cp;
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
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 ();
mc_color__deinit (&tty_color_defaults);
g_hash_table_destroy (mc_tty_color__hashtable);
}
/* --------------------------------------------------------------------------------------------- */
gboolean
tty_use_colors (void)
{
return use_colors;
}
/* --------------------------------------------------------------------------------------------- */
int
tty_try_alloc_color_pair (const tty_color_pair_t * color, gboolean is_temp)
{
gboolean is_base;
gchar *color_pair;
tty_color_lib_pair_t *mc_color_pair;
int ifg, ibg, attr;
is_base = (color->fg == NULL || strcmp (color->fg, "base") == 0);
ifg = tty_color_get_index_by_name (is_base ? tty_color_defaults.fg : color->fg);
is_base = (color->bg == NULL || strcmp (color->bg, "base") == 0);
ibg = tty_color_get_index_by_name (is_base ? tty_color_defaults.bg : color->bg);
is_base = (color->attrs == NULL || strcmp (color->attrs, "base") == 0);
attr = tty_attr_get_bits (is_base ? tty_color_defaults.attrs : color->attrs);
color_pair = g_strdup_printf ("%d.%d.%d", ifg, ibg, attr);
if (color_pair == NULL)
return 0;
mc_color_pair =
(tty_color_lib_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_lib_pair_t, 1);
if (mc_color_pair == NULL)
{
g_free (color_pair);
return 0;
}
mc_color_pair->is_temp = is_temp;
mc_color_pair->fg = ifg;
mc_color_pair->bg = ibg;
mc_color_pair->attr = attr;
mc_color_pair->pair_index = tty_color_get_next__color_pair_number ();
tty_color_try_alloc_lib_pair (mc_color_pair);
g_hash_table_insert (mc_tty_color__hashtable, (gpointer) color_pair, (gpointer) mc_color_pair);
return mc_color_pair->pair_index;
}
/* --------------------------------------------------------------------------------------------- */
void
tty_color_free_temp (void)
{
g_hash_table_foreach_remove (mc_tty_color__hashtable, tty_color_free_temp_cb, NULL);
}
/* --------------------------------------------------------------------------------------------- */
void
tty_color_free_all (void)
{
g_hash_table_remove_all (mc_tty_color__hashtable);
}
/* --------------------------------------------------------------------------------------------- */
void
tty_color_set_defaults (const tty_color_pair_t * color)
{
mc_color__deinit (&tty_color_defaults);
tty_color_defaults.fg = g_strdup (color->fg);
tty_color_defaults.bg = g_strdup (color->bg);
tty_color_defaults.attrs = g_strdup (color->attrs);
tty_color_defaults.pair_index = 0;
}
/* --------------------------------------------------------------------------------------------- */
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