mirror of https://github.com/MidnightCommander/mc
245 lines
7.4 KiB
C
245 lines
7.4 KiB
C
/*
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Color setup.
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Interface functions.
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Copyright (C) 1994, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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2007, 2008, 2009, 2010, 2011
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The Free Software Foundation, Inc.
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Written by:
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Andrew Borodin <aborodin@vmail.ru>, 2009
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Slava Zanko <slavazanko@gmail.com>, 2009
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Egmont Koblinger <egmont@gmail.com>, 2010
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This file is part of the Midnight Commander.
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The Midnight Commander is free software: you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of the License,
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or (at your option) any later version.
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The Midnight Commander is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file color.c
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* \brief Source: color setup
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h> /* size_t */
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#include "lib/global.h"
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#include "tty.h"
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#include "color.h"
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#include "color-internal.h"
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/*** global variables ****************************************************************************/
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static char *tty_color_defaults__fg = NULL;
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static char *tty_color_defaults__bg = NULL;
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static char *tty_color_defaults__attrs = NULL;
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/* Set if we are actually using colors */
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gboolean use_colors = FALSE;
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/*** file scope macro definitions ****************************************************************/
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/*** file scope type declarations ****************************************************************/
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/*** file scope variables ************************************************************************/
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static GHashTable *mc_tty_color__hashtable = NULL;
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/*** file scope functions ************************************************************************/
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/* --------------------------------------------------------------------------------------------- */
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static gboolean
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tty_color_free_condition_cb (gpointer key, gpointer value, gpointer user_data)
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{
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gboolean is_temp_color;
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tty_color_pair_t *mc_color_pair;
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(void) key;
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is_temp_color = user_data != NULL;
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mc_color_pair = (tty_color_pair_t *) value;
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return (mc_color_pair->is_temp == is_temp_color);
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}
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/* --------------------------------------------------------------------------------------------- */
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static void
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tty_color_free_all (gboolean is_temp_color)
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{
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g_hash_table_foreach_remove (mc_tty_color__hashtable, tty_color_free_condition_cb,
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is_temp_color ? GINT_TO_POINTER (1) : NULL);
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}
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/* --------------------------------------------------------------------------------------------- */
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static gboolean
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tty_color_get_next_cpn_cb (gpointer key, gpointer value, gpointer user_data)
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{
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size_t cp;
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tty_color_pair_t *mc_color_pair;
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(void) key;
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cp = GPOINTER_TO_INT (user_data);
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mc_color_pair = (tty_color_pair_t *) value;
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return (cp == mc_color_pair->pair_index);
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}
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/* --------------------------------------------------------------------------------------------- */
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static size_t
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tty_color_get_next__color_pair_number (void)
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{
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const size_t cp_count = g_hash_table_size (mc_tty_color__hashtable);
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size_t cp;
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for (cp = 0; cp < cp_count; cp++)
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if (g_hash_table_find (mc_tty_color__hashtable, tty_color_get_next_cpn_cb,
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GINT_TO_POINTER (cp)) == NULL)
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break;
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return cp;
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}
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/* --------------------------------------------------------------------------------------------- */
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/*** public functions ****************************************************************************/
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/* --------------------------------------------------------------------------------------------- */
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void
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tty_init_colors (gboolean disable, gboolean force)
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{
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tty_color_init_lib (disable, force);
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mc_tty_color__hashtable = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
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}
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/* --------------------------------------------------------------------------------------------- */
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void
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tty_colors_done (void)
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{
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tty_color_deinit_lib ();
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g_free (tty_color_defaults__fg);
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g_free (tty_color_defaults__bg);
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g_free (tty_color_defaults__attrs);
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g_hash_table_destroy (mc_tty_color__hashtable);
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}
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/* --------------------------------------------------------------------------------------------- */
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gboolean
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tty_use_colors (void)
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{
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return use_colors;
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}
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/* --------------------------------------------------------------------------------------------- */
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int
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tty_try_alloc_color_pair2 (const char *fg, const char *bg, const char *attrs,
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gboolean is_temp_color)
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{
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gchar *color_pair;
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tty_color_pair_t *mc_color_pair;
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int ifg, ibg, attr;
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if (fg == NULL || !strcmp (fg, "base"))
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fg = tty_color_defaults__fg;
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if (bg == NULL || !strcmp (bg, "base"))
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bg = tty_color_defaults__bg;
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if (attrs == NULL || !strcmp (attrs, "base"))
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attrs = tty_color_defaults__attrs;
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ifg = tty_color_get_index_by_name (fg);
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ibg = tty_color_get_index_by_name (bg);
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attr = tty_attr_get_bits (attrs);
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color_pair = g_strdup_printf ("%d.%d.%d", ifg, ibg, attr);
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if (color_pair == NULL)
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return 0;
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mc_color_pair =
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(tty_color_pair_t *) g_hash_table_lookup (mc_tty_color__hashtable, (gpointer) color_pair);
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if (mc_color_pair != NULL)
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{
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g_free (color_pair);
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return mc_color_pair->pair_index;
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}
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mc_color_pair = g_try_new0 (tty_color_pair_t, 1);
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if (mc_color_pair == NULL)
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{
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g_free (color_pair);
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return 0;
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}
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mc_color_pair->is_temp = is_temp_color;
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mc_color_pair->ifg = ifg;
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mc_color_pair->ibg = ibg;
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mc_color_pair->attr = attr;
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mc_color_pair->pair_index = tty_color_get_next__color_pair_number ();
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tty_color_try_alloc_pair_lib (mc_color_pair);
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g_hash_table_insert (mc_tty_color__hashtable, (gpointer) color_pair, (gpointer) mc_color_pair);
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return mc_color_pair->pair_index;
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}
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/* --------------------------------------------------------------------------------------------- */
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int
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tty_try_alloc_color_pair (const char *fg, const char *bg, const char *attrs)
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{
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return tty_try_alloc_color_pair2 (fg, bg, attrs, TRUE);
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}
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/* --------------------------------------------------------------------------------------------- */
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void
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tty_color_free_all_tmp (void)
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{
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tty_color_free_all (TRUE);
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}
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/* --------------------------------------------------------------------------------------------- */
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void
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tty_color_free_all_non_tmp (void)
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{
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tty_color_free_all (FALSE);
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}
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/* --------------------------------------------------------------------------------------------- */
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void
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tty_color_set_defaults (const char *fgcolor, const char *bgcolor, const char *attrs)
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{
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g_free (tty_color_defaults__fg);
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g_free (tty_color_defaults__bg);
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g_free (tty_color_defaults__attrs);
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tty_color_defaults__fg = (fgcolor != NULL) ? g_strdup (fgcolor) : NULL;
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tty_color_defaults__bg = (bgcolor != NULL) ? g_strdup (bgcolor) : NULL;
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tty_color_defaults__attrs = (attrs != NULL) ? g_strdup (attrs) : NULL;
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}
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/* --------------------------------------------------------------------------------------------- */
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