mc/lib/tty/color-ncurses.c
Andrew Borodin 7257f794d2 Update template for .c files.
Add section for forward declarations of local functions. This section is
located before file scope variables because functions can be used in
strucutres (see find.c for example):

/*** forward declarations (file scope functions) *************************************************/

/* button callbacks */
static int start_stop (WButton * button, int action);
static int find_do_view_file (WButton * button, int action);
static int find_do_edit_file (WButton * button, int action);

/*** file scope variables ************************************************************************/

static struct
{
    ...
    bcback_fn callback;
} fbuts[] =
{
    ...
    { B_STOP, NORMAL_BUTTON, N_("S&uspend"), 0, 0, NULL, start_stop },
    ...
    { B_VIEW, NORMAL_BUTTON, N_("&View - F3"), 0, 0, NULL, find_do_view_file },
    { B_VIEW, NORMAL_BUTTON, N_("&Edit - F4"), 0, 0, NULL, find_do_edit_file }
};

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
2023-03-19 20:34:24 +03:00

252 lines
7.6 KiB
C

/*
Color setup for NCurses screen library
Copyright (C) 1994-2023
Free Software Foundation, Inc.
Written by:
Andrew Borodin <aborodin@vmail.ru>, 2009
Slava Zanko <slavazanko@gmail.com>, 2010
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-ncurses.c
* \brief Source: NCUrses-specific 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-ncurses.h"
#include "color.h" /* variables */
#include "color-internal.h"
/*** global variables ****************************************************************************/
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/*** forward declarations (file scope functions) *************************************************/
/*** file scope variables ************************************************************************/
static GHashTable *mc_tty_color_color_pair_attrs = NULL;
/* --------------------------------------------------------------------------------------------- */
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
static inline void
mc_tty_color_attr_destroy_cb (gpointer data)
{
g_free (data);
}
/* --------------------------------------------------------------------------------------------- */
static void
mc_tty_color_save_attr (int color_pair, int color_attr)
{
int *attr, *key;
attr = g_try_new0 (int, 1);
if (attr == NULL)
return;
key = g_try_new (int, 1);
if (key == NULL)
{
g_free (attr);
return;
}
*key = color_pair;
*attr = color_attr;
g_hash_table_replace (mc_tty_color_color_pair_attrs, (gpointer) key, (gpointer) attr);
}
/* --------------------------------------------------------------------------------------------- */
static int
color_get_attr (int color_pair)
{
int *fnd = NULL;
if (mc_tty_color_color_pair_attrs != NULL)
fnd = (int *) g_hash_table_lookup (mc_tty_color_color_pair_attrs, (gpointer) & color_pair);
return (fnd != NULL) ? *fnd : 0;
}
/* --------------------------------------------------------------------------------------------- */
static void
mc_tty_color_pair_init_special (tty_color_pair_t * mc_color_pair,
int fg1, int bg1, int fg2, int bg2, int attr)
{
if (has_colors () && !mc_tty_color_disable)
init_pair (mc_color_pair->pair_index, fg1, bg1);
else
init_pair (mc_color_pair->pair_index, fg2, bg2);
mc_tty_color_save_attr (mc_color_pair->pair_index, attr);
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
void
tty_color_init_lib (gboolean disable, gboolean force)
{
(void) force;
if (has_colors () && !disable)
{
use_colors = TRUE;
start_color ();
use_default_colors ();
}
mc_tty_color_color_pair_attrs = g_hash_table_new_full
(g_int_hash, g_int_equal, mc_tty_color_attr_destroy_cb, mc_tty_color_attr_destroy_cb);
}
/* --------------------------------------------------------------------------------------------- */
void
tty_color_deinit_lib (void)
{
g_hash_table_destroy (mc_tty_color_color_pair_attrs);
mc_tty_color_color_pair_attrs = NULL;
}
/* --------------------------------------------------------------------------------------------- */
void
tty_color_try_alloc_pair_lib (tty_color_pair_t * mc_color_pair)
{
if (mc_color_pair->ifg <= (int) SPEC_A_REVERSE)
{
switch (mc_color_pair->ifg)
{
case SPEC_A_REVERSE:
mc_tty_color_pair_init_special (mc_color_pair,
COLOR_BLACK, COLOR_WHITE,
COLOR_BLACK, COLOR_WHITE | A_BOLD, A_REVERSE);
break;
case SPEC_A_BOLD:
mc_tty_color_pair_init_special (mc_color_pair,
COLOR_WHITE, COLOR_BLACK,
COLOR_WHITE, COLOR_BLACK, A_BOLD);
break;
case SPEC_A_BOLD_REVERSE:
mc_tty_color_pair_init_special (mc_color_pair,
COLOR_WHITE, COLOR_WHITE,
COLOR_WHITE, COLOR_WHITE, A_BOLD | A_REVERSE);
break;
case SPEC_A_UNDERLINE:
mc_tty_color_pair_init_special (mc_color_pair,
COLOR_WHITE, COLOR_BLACK,
COLOR_WHITE, COLOR_BLACK, A_UNDERLINE);
break;
default:
break;
}
}
else
{
int ifg, ibg, attr;
ifg = mc_color_pair->ifg;
ibg = mc_color_pair->ibg;
attr = mc_color_pair->attr;
/* In legacy color mode, change bright colors into bold */
if (!tty_use_256colors (NULL) && !tty_use_truecolors (NULL))
{
if (ifg >= 8 && ifg < 16)
{
ifg &= 0x07;
attr |= A_BOLD;
}
if (ibg >= 8 && ibg < 16)
{
ibg &= 0x07;
/* attr | = A_BOLD | A_REVERSE ; */
}
}
init_pair (mc_color_pair->pair_index, ifg, ibg);
mc_tty_color_save_attr (mc_color_pair->pair_index, attr);
}
}
/* --------------------------------------------------------------------------------------------- */
void
tty_setcolor (int color)
{
attrset (COLOR_PAIR (color) | color_get_attr (color));
}
/* --------------------------------------------------------------------------------------------- */
void
tty_lowlevel_setcolor (int color)
{
tty_setcolor (color);
}
/* --------------------------------------------------------------------------------------------- */
void
tty_set_normal_attrs (void)
{
standend ();
}
/* --------------------------------------------------------------------------------------------- */
gboolean
tty_use_256colors (GError ** error)
{
(void) error;
return (COLORS == 256);
}
/* --------------------------------------------------------------------------------------------- */
gboolean
tty_use_truecolors (GError ** error)
{
/* Not yet supported in ncurses */
g_set_error (error, MC_ERROR, -1, _("True color not supported with ncurses."));
return FALSE;
}
/* --------------------------------------------------------------------------------------------- */