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nano/color.c

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/* $Id$ */
/**************************************************************************
* color.c *
* *
* Copyright (C) 1999-2002 Chris Allegretta *
* 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. *
* *
**************************************************************************/
#include "config.h"
#ifdef ENABLE_COLOR
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "proto.h"
#include "nano.h"
#ifdef ENABLE_NLS
#include <libintl.h>
#define _(string) gettext(string)
#else
#define _(string) (string)
#endif
void color_on(WINDOW *win, int whatever)
{
/* Temporary fallback, if the color value hasn't been set,
turn on highlighting */
if (!colors[whatever - FIRST_COLORNUM].set) {
wattron(win, A_REVERSE);
return;
}
if (colors[whatever - FIRST_COLORNUM].bold)
wattron(win, A_BOLD);
/* If the foreground color is black, we've switched fg and bg (see
the comment in colorinit_one() about this) so turn on reverse so
it looks like it's supposed to */
if (colors[whatever - FIRST_COLORNUM].fg == COLOR_BLACK)
wattron(win, A_REVERSE);
wattron(win, COLOR_PAIR(whatever));
}
void color_off(WINDOW *win, int whatever)
{
if (!colors[whatever - FIRST_COLORNUM].set) {
wattroff(win, A_REVERSE);
return;
}
wattroff(win, COLOR_PAIR(whatever));
if (colors[whatever - FIRST_COLORNUM].fg == COLOR_BLACK)
wattroff(win, A_REVERSE);
if (colors[whatever - FIRST_COLORNUM].bold)
wattroff(win, A_BOLD);
}
void colorinit_one(int colortoset, short fg, short bg, int bold)
{
colors[colortoset - FIRST_COLORNUM].fg = fg;
colors[colortoset - FIRST_COLORNUM].bg = bg;
colors[colortoset - FIRST_COLORNUM].bold = bold;
colors[colortoset - FIRST_COLORNUM].set = 1;
/* Okay, so if they want a black foreground, do a switch on the fg
and bg, because specifying black as the foreground color gives
this ugly grey color. Then in color_on we will turn A_REVERSE
which is probably what they want it to look like... */
if (fg == COLOR_BLACK)
init_pair(colortoset, bg, fg);
else
init_pair(colortoset, fg, bg);
}
int do_colorinit(void)
{
int i;
colortype *tmpcolor = NULL, *beforenow = NULL;
int defok = 0;
if (has_colors()) {
start_color();
/* Add in colors, if available */
#ifdef HAVE_USE_DEFAULT_COLORS
if (use_default_colors() != ERR)
defok = 1;
#endif
i = 1;
for (tmpcolor = colorstrings; tmpcolor != NULL;
tmpcolor = tmpcolor->next) {
for (beforenow = colorstrings; beforenow != NULL
&& beforenow != tmpcolor &&
(beforenow->fg != tmpcolor->fg || beforenow->bg != tmpcolor->bg
|| beforenow->bright != tmpcolor->bright);
beforenow = beforenow->next)
;
if (beforenow != NULL && beforenow != tmpcolor) {
tmpcolor->pairnum = beforenow->pairnum;
continue;
}
if (defok && tmpcolor->bg == -1)
init_pair(i, tmpcolor->fg, -1);
else if (tmpcolor->bg == -1)
init_pair(i, tmpcolor->fg, COLOR_BLACK);
else /* They picked a fg and bg color */
init_pair(i, tmpcolor->fg, tmpcolor->bg);
#ifdef DEBUG
fprintf(stderr, _("Running init_pair with fg = %d and bg = %d\n"), tmpcolor->fg, tmpcolor->bg);
#endif
tmpcolor->pairnum = i;
i++;
}
}
/*
if (use_default_colors() != ERR) {
init_pair(COLOR_BLACK, -1, -1);
init_pair(COLOR_GREEN, COLOR_GREEN, -1);
init_pair(COLOR_WHITE, COLOR_WHITE, -1);
init_pair(COLOR_RED, COLOR_RED, -1);
init_pair(COLOR_CYAN, COLOR_CYAN, -1);
init_pair(COLOR_MAGENTA, COLOR_MAGENTA, -1);
init_pair(COLOR_BLUE, COLOR_BLUE, -1);
init_pair(COLOR_YELLOW, COLOR_YELLOW, -1);
} else {
init_pair(COLOR_BLACK, COLOR_BLACK, COLOR_BLACK);
init_pair(COLOR_GREEN, COLOR_GREEN, COLOR_BLACK);
init_pair(COLOR_WHITE, COLOR_WHITE, COLOR_BLACK);
init_pair(COLOR_RED, COLOR_RED, COLOR_BLACK);
init_pair(COLOR_CYAN, COLOR_CYAN, COLOR_BLACK);
init_pair(COLOR_MAGENTA, COLOR_MAGENTA, COLOR_BLACK);
init_pair(COLOR_BLUE, COLOR_BLUE, COLOR_BLACK);
init_pair(COLOR_YELLOW, COLOR_YELLOW, COLOR_BLACK);
}
*/
/* Okay I'll be nice and comment these out for the commit =)
colorinit_one(COLOR_TITLEBAR, COLOR_GREEN, COLOR_BLUE, 1);
colorinit_one(COLOR_BOTTOMBARS, COLOR_GREEN, COLOR_BLUE, 1);
colorinit_one(COLOR_STATUSBAR, COLOR_BLACK, COLOR_CYAN, 0);
colorinit_one(COLOR_TEXT, COLOR_WHITE, COLOR_BLACK, 0);
colorinit_one(COLOR_MARKER, COLOR_BLACK, COLOR_CYAN, 0);
}
*/
return 0;
}
/* Update the color information based on the current filename */
void update_color(void)
{
syntaxtype *tmpsyntax;
colorstrings = NULL;
for (tmpsyntax = syntaxes; tmpsyntax != NULL; tmpsyntax = tmpsyntax->next) {
exttype *e;
for (e = tmpsyntax->extensions; e != NULL; e = e->next) {
regcomp(&syntaxfile_regexp, e->val, 0);
/* Set colorstrings if we matched the extension regex */
if (!regexec(&syntaxfile_regexp, filename, 1, synfilematches, 0))
colorstrings = tmpsyntax->color;
regfree(&syntaxfile_regexp);
}
}
/* if we haven't found a match, use the override string */
if (colorstrings == NULL && syntaxstr != NULL) {
for (tmpsyntax = syntaxes; tmpsyntax != NULL;
tmpsyntax = tmpsyntax->next) {
if (!strcasecmp(tmpsyntax->desc, syntaxstr))
colorstrings = tmpsyntax->color;
}
}
do_colorinit();
edit_refresh();
}
#endif /* ENABLE_COLOR */
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