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/*
** Copyright (C) 1991, 1997 Free Software Foundation, Inc.
**
** This file is part of TACK.
**
** TACK 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.
**
** TACK 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 TACK; see the file COPYING. If not, write to
** the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
** Boston, MA 02110-1301, USA
*/
#include <tack.h>
MODULE_ID("$Id: color.c,v 1.7 2006/11/26 00:14:25 tom Exp $")
/*
* Color terminal tests. Has only one entry point: test_color().
*/
static void color_check(struct test_list *, int *, int *);
static void color_setf(struct test_list *, int *, int *);
static void color_matrix(struct test_list *, int *, int *);
static void color_ncv(struct test_list *, int *, int *);
static void color_ccc(struct test_list *, int *, int *);
static void color_bce(struct test_list *, int *, int *);
struct test_list color_test_list[] = {
{0, 0, 0, 0, "e) edit terminfo", 0, &edit_menu},
{MENU_NEXT, 2, "colors) (pairs", 0, 0, color_check, 0},
{MENU_NEXT, 12, "setf) (setb) (scp", 0, 0, color_setf, 0},
{MENU_NEXT, 24, "op", 0, 0, color_matrix, 0},
{MENU_NEXT, 16, "ncv", 0, 0, color_ncv, 0},
{MENU_NEXT, 0, "bce", 0, 0, color_bce, 0},
{MENU_NEXT | MENU_CLEAR, 0, "ccc) (initc) (initp", "hls op oc", 0, color_ccc, 0},
{MENU_LAST, 0, 0, 0, 0, 0, 0}
};
#ifndef COLOR_BLACK
#define COLOR_BLACK 0
#define COLOR_BLUE 1
#define COLOR_GREEN 2
#define COLOR_CYAN 3
#define COLOR_RED 4
#define COLOR_MAGENTA 5
#define COLOR_YELLOW 6
#define COLOR_WHITE 7
#endif
struct color_table {
const char *name;
int index;
int r, g, b;
int h, l, s;
};
static struct color_table def_colors[8] = {
{"black ", COLOR_BLACK, 0, 0, 0, 0, 0, 0},
{"blue ", COLOR_BLUE, 0, 0, 1000, 330, 50, 100},
{"green ", COLOR_GREEN, 0, 1000, 0, 240, 50, 100},
{"cyan ", COLOR_CYAN, 0, 1000, 1000, 300, 50, 100},
{"red ", COLOR_RED, 1000, 0, 0, 120, 50, 100},
{"magenta", COLOR_MAGENTA, 1000, 0, 1000, 60, 50, 100},
{"yellow ", COLOR_YELLOW, 1000, 1000, 0, 180, 50, 100},
{"white ", COLOR_WHITE, 1000, 1000, 1000, 0, 100, 0}
};
#define MAX_PAIR 256
static int fg_color[MAX_PAIR] = {COLOR_BLACK, COLOR_BLUE, COLOR_GREEN,
COLOR_CYAN, COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE};
static int bg_color[MAX_PAIR] = {COLOR_BLACK, COLOR_BLACK, COLOR_BLACK,
COLOR_BLACK, COLOR_BLACK, COLOR_BLACK, COLOR_BLACK, COLOR_BLACK};
static int pairs_used = 8;
static int a_bright_color, bright_value;
static int cookie_monster, color_step, colors_per_line;
static int R, G, B;
static void reset_colors(void)
{
tc_putp(orig_colors);
tc_putp(TPARM_0(orig_pair));
}
static int
color_trans(int c)
{ /* translate or load the color */
int i;
for (i = 0; i < pairs_used; i++) {
if (fg_color[i] == c) {
return i;
}
}
if (!can_change) {
return 0;
}
if (pairs_used > max_colors || pairs_used >= MAX_PAIR) {
pairs_used = 0;
ptextln("Ran out of colors");
}
fg_color[pairs_used] = c;
bg_color[pairs_used] = c;
if (hue_lightness_saturation) {
tc_putp(TPARM_4(initialize_color, pairs_used,
def_colors[c].h, def_colors[c].l, def_colors[c].s));
} else {
tc_putp(TPARM_4(initialize_color, pairs_used,
def_colors[c].r, def_colors[c].g, def_colors[c].b));
}
return pairs_used++;
}
static void
new_color(
int fg,
int bg,
int hungry)
{ /* change the color to fg and bg. */
int i;
if (hungry) {
eat_cookie();
}
if (set_a_foreground) {
/* set ANSI color (setaf) (setab) */
tc_putp(TPARM_1(set_a_foreground, fg));
tc_putp(TPARM_1(set_a_background, bg));
} else if (set_foreground) {
/* make sure black is zero */
(void) color_trans(COLOR_BLACK);
tc_putp(TPARM_1(set_foreground, color_trans(fg)));
tc_putp(TPARM_1(set_background, color_trans(bg)));
} else { /* set color pair */
for (i = 0; i < pairs_used; i++) {
if (fg_color[i] == fg && bg_color[i] == bg) {
tc_putp(TPARM_1(set_color_pair, i));
if (hungry) {
eat_cookie();
}
return;
}
}
if (!can_change) {
/* try to set just the foreground */
for (i = pairs_used - 1; i; i--) {
if (fg_color[i] == fg)
break;
}
tc_putp(TPARM_1(set_color_pair, i));
if (hungry) {
eat_cookie();
}
return;
}
if (pairs_used > max_pairs || pairs_used >= MAX_PAIR) {
pairs_used = 0;
ptextln("Ran out of color pairs");
}
fg_color[pairs_used] = fg;
bg_color[pairs_used] = bg;
if (hue_lightness_saturation) {
tc_putp(TPARM_7(initialize_pair, pairs_used,
def_colors[fg].h, def_colors[fg].l, def_colors[fg].s,
def_colors[bg].h, def_colors[bg].l, def_colors[bg].s));
} else {
tc_putp(TPARM_7(initialize_pair, pairs_used,
def_colors[fg].r, def_colors[fg].g, def_colors[fg].b,
def_colors[bg].r, def_colors[bg].g, def_colors[bg].b));
}
tc_putp(TPARM_1(set_color_pair, pairs_used));
pairs_used++;
}
if (hungry) {
eat_cookie();
}
}
static void
set_color_step(void)
{ /* set the color_step for the (ccc) display */
int i;
for (i = 2; i < 1000; i++) {
if ((i * i * i) >= max_colors) {
break;
}
}
color_step = 1000 / (i - 1);
}
static void
rgb_2_hls(int r, int g, int b, int *h, int *l, int *s)
{ /* convert RGB to HLS system */
int min, max, t;
if ((min = g < r ? g : r) > b) {
min = b;
}
if ((max = g > r ? g : r) < b) {
max = b;
}
/* calculate lightness */
*l = (min + max) / 20;
if (min == max) { /* black, white and all shades of gray */
*h = 0;
*s = 0;
return;
}
/* calculate saturation */
if (*l < 50) {
*s = ((max - min) * 100) / (max + min);
} else {
*s = ((max - min) * 100) / (2000 - max - min);
}
/* calculate hue */
if (r == max) {
t = 120 + ((g - b) * 60) / (max - min);
} else if (g == max) {
t = 240 + ((b - r) * 60) / (max - min);
} else {
t = 360 + ((r - g) * 60) / (max - min);
}
*h = t % 360;
}
static void
send_color(int p, int r, int g, int b)
{ /* send the initialize_color (initc) command */
int h, l, s;
if (hue_lightness_saturation) {
rgb_2_hls(r, g, b, &h, &l, &s);
tc_putp(TPARM_4(initialize_color, p, h, l, s));
} else {
tc_putp(TPARM_4(initialize_color, p, r, g, b));
}
}
static void
send_pair(int p, int fr, int fg, int fb, int br, int bg, int bb)
{ /* send the initialize_pair (initp) command */
int fh, fl, fs, bh, bl, bs;
if (hue_lightness_saturation) {
rgb_2_hls(fr, fg, fb, &fh, &fl, &fs);
rgb_2_hls(br, bg, bb, &bh, &bl, &bs);
tc_putp(TPARM_7(initialize_pair, p, fh, fl, fs, bh, bl, bs));
} else {
tc_putp(TPARM_7(initialize_pair, p, fr, fg, fb, bb, bg, bb));
}
}
static int
load_palette(int n)
{ /* load the color palette */
int rgb;
for (;;) {
if (pairs_used >= n) {
return FALSE;
}
if (set_a_foreground || set_foreground) {
if (pairs_used >= max_colors) {
return FALSE;
}
send_color(pairs_used, R, G, B);
rgb = R + G + B;
if (rgb > bright_value) {
bright_value = rgb;
a_bright_color = pairs_used;
}
} else {
if (pairs_used >= max_pairs) {
return FALSE;
}
if (pairs_used == 0) {
send_pair(pairs_used, 1000, 1000, 1000, R, G, B);
} else {
send_pair(pairs_used, R, G, B, R, G, B);
}
}
pairs_used++;
if ((B += color_step) > 1000) {
B = 0;
if ((G += color_step) > 1000) {
G = 0;
if ((R += color_step) > 1000) {
return TRUE;
}
}
}
}
}
static int
rainbow(int n)
{ /* print the programmable color display */
int i, c, d, palette_full, initial_pair;
static const struct {
const char *name;
char ch;
} splat[] = {
{"Bg normal", ' '},
{"Fg normal", ' '},
{0, 0}
};
if ((set_a_foreground || set_foreground)
? pairs_used >= max_colors
: pairs_used >= max_pairs) {
ptext("New palette: ");
(void) wait_here();
initial_pair = pairs_used = 1;
bright_value = 0;
} else if (line_count + 3 >= lines) {
ptext("Go: ");
(void) wait_here();
put_clear();
initial_pair = pairs_used = 1;
bright_value = 0;
n++;
} else {
initial_pair = pairs_used;
n += initial_pair;
}
palette_full = load_palette(n);
for (d = 0; splat[d].name; d++) {
c = splat[d].ch;
if (d == 1) {
put_mode(enter_reverse_mode);
}
for (i = initial_pair; i < n; i++) {
if (i >= pairs_used) {
break;
}
if (set_a_foreground) {
if (i >= max_colors) {
break;
}
tc_putp(TPARM_1(set_a_foreground, i));
tc_putp(TPARM_1(set_a_background, i));
} else if (set_foreground) {
if (i >= max_colors) {
break;
}
tc_putp(TPARM_1(set_foreground, i));
tc_putp(TPARM_1(set_background, i));
} else {
if (i >= max_pairs) {
break;
}
tc_putp(TPARM_1(set_color_pair, i));
}
putchp(c);
}
if (d == 1) {
put_mode(exit_attribute_mode);
}
if (set_a_foreground) {
tc_putp(TPARM_1(set_a_foreground, a_bright_color));
tc_putp(TPARM_1(set_a_background, 0));
} else if (set_foreground) {
tc_putp(TPARM_1(set_foreground, a_bright_color));
tc_putp(TPARM_1(set_background, 0));
} else {
tc_putp(TPARM_1(set_color_pair, 0));
}
put_str(" ");
put_str(splat[d].name);
put_crlf();
}
return palette_full;
}
static void
ncv_display(int m)
{ /* print the no_color_video (ncv) test line */
putchp('0' + m);
putchp(' ');
eat_cookie();
set_attr(1 << m);
sprintf(temp, "%-11s", alt_modes[m].name);
put_str(temp);
new_color(COLOR_BLUE, COLOR_BLACK, TRUE);
put_str("blue");
new_color(COLOR_BLACK, COLOR_GREEN, TRUE);
put_str("green");
new_color(COLOR_WHITE, COLOR_BLACK, TRUE);
put_str(alt_modes[m].name);
eat_cookie();
set_attr(0);
reset_colors();
put_crlf();
}
static void
dump_colors(void)
{ /* display the colors in some esthetic
pattern */
static int xmap[8] = {0, 3, 4, 7, 1, 2, 5, 6};
int i, j, k, xi, xj, width, p, cs;
int found_one;
cs = color_step <= 125 ? 125 : color_step;
width = (1000 / cs) + 1;
for (xi = 0; xi < 16; xi++) {
i = (xi & 8) ? xi ^ 15 : xi;
R = i * cs;
if (R <= 1000) {
found_one = FALSE;
for (xj = 0; xj < 32; xj++) {
j = ((xj & 8) ? xj ^ 15 : xj) & 7;
k = xmap[((xi >> 1) & 4) + (xj >> 3)];
G = j * cs;
B = k * cs;
if (G <= 1000 && B <= 1000) {
p = (k * width + j) * width + i;
if (set_a_background) {
if (p >= max_colors) {
continue;
}
send_color(p, R, G, B);
tc_putp(TPARM_1(set_a_background, p));
} else if (set_background) {
if (p >= max_colors) {
continue;
}
send_color(p, R, G, B);
tc_putp(TPARM_1(set_background, p));
} else {
if (p >= max_pairs) {
continue;
}
send_pair(p, R, G, B, R, G, B);
tc_putp(TPARM_1(set_color_pair, p));
}
found_one = TRUE;
putchp(' ');
putchp(' ');
}
}
if (found_one) {
put_crlf();
}
}
}
}
/*
** color_check(test_list, status, ch)
**
** test (colors) and (pairs)
*/
static void
color_check(
struct test_list *t,
int *state,
int *ch)
{
if (max_colors <= 0 && max_pairs <= 0) {
ptext("This is not a color terminal; (colors) and (pairs) are missing. ");
*state |= MENU_STOP;
} else {
sprintf(temp, "This terminal can display %d colors and %d color pairs. (colors) (pairs)",
max_colors, max_pairs);
ptextln(temp);
}
generic_done_message(t, state, ch);
}
/*
** color_setf(test_list, status, ch)
**
** test (setf) (setb) and (scp)
*/
static void
color_setf(
struct test_list *t,
int *state,
int *ch)
{
int i, j;
if (max_colors <= 0 && max_pairs <= 0) {
ptext("This is not a color terminal; (colors) and (pairs) are missing. ");
generic_done_message(t, state, ch);
*state |= MENU_STOP;
return;
}
if ((set_a_foreground == NULL || set_a_background == NULL)
&& (set_foreground == NULL || set_background == NULL)
&& set_color_pair == NULL) {
ptextln("Both set foreground (setaf/setf) and set color pair (scp) are not present.");
if (!set_a_background || !set_background) {
ptextln("(setab/setb) set background not present");
}
ptext("These must be defined for color testing. ");
generic_done_message(t, state, ch);
*state |= MENU_STOP;
return;
}
/* initialize the color palette */
pairs_used = max_colors >= 8 ? 8 : max_colors;
reset_colors();
new_color(COLOR_WHITE, COLOR_BLACK, FALSE);
ptextln("(setf) (setb) (scp) The following colors are predefined:");
ptextln("\n Foreground Background");
put_crlf();
j = max_colors > 8 ? 8 : max_colors;
/*
* the black on white test is the same as the white on black test.
*/
for (i = 1; i < j; i++) {
putchp('0' + def_colors[i].index);
putchp(' ');
sprintf(temp, " %s ", def_colors[i].name);
new_color(def_colors[i].index, COLOR_BLACK, TRUE);
put_str(temp);
new_color(COLOR_BLACK, COLOR_BLACK, TRUE);
put_str(" ");
new_color(COLOR_BLACK, def_colors[i].index, TRUE);
put_str(temp);
new_color(COLOR_WHITE, COLOR_BLACK, FALSE);
put_crlf();
}
reset_colors();
put_crlf();
generic_done_message(t, state, ch);
}
/*
** color_matrix(test_list, status, ch)
**
** test (pairs) (op)
*/
static void
color_matrix(
struct test_list *t,
int *state,
int *ch)
{
int i, j, matrix_size, matrix_area, brightness;
matrix_size = max_colors > 8 ? 8 : max_colors;
sprintf(temp, "(pairs) There are %d color pairs.", max_pairs);
ptextln(temp);
for ( ; matrix_size; matrix_size--) {
if (matrix_size * matrix_size <= max_pairs) {
break;
}
}
matrix_area = matrix_size * matrix_size;
for (brightness = 0; brightness < 2; brightness++) {
put_crlf();
sprintf(temp,
"%dx%d matrix of foreground/background colors, bright *o%s*",
matrix_size, matrix_size, brightness ? "n" : "ff");
put_str(temp);
put_str("\n ");
for (i = 0; i < matrix_size; i++) {
(void) sprintf(temp, "%-8s", def_colors[i].name);
put_str(temp);
}
for (j = 0; j < matrix_area; j++) {
if (j % matrix_size == 0) {
reset_colors();
put_crlf();
if (brightness) {
tc_putp(exit_attribute_mode);
}
(void) sprintf(temp, "%-8s", def_colors[j / matrix_size].name);
put_str(temp);
if (brightness) {
put_mode(enter_bold_mode);
}
}
new_color(def_colors[j % matrix_size].index,
def_colors[j / matrix_size].index,
FALSE);
put_str(" Hello ");
}
reset_colors();
if (brightness) {
tc_putp(exit_attribute_mode);
}
put_crlf();
}
generic_done_message(t, state, ch);
}
/*
** color_ncv(test_list, status, ch)
**
** test (ncv)
*/
static void
color_ncv(
struct test_list *t,
int *state,
int *ch)
{
int i;
if (no_color_video == -1) {
/* I have no idea what this means */
return;
}
sprintf(temp, "According to no_color_video (ncv) which is %d, the following attributes should work correctly with color.", no_color_video);
ptextln(temp);
put_crlf();
set_attr(0);
ncv_display(0);
for (i = 1; i <= 9; i++) {
if (((no_color_video >> (mode_map[i] - 1)) & 1) == 0) {
ncv_display(mode_map[i]);
}
}
if (no_color_video & 0x3ff) {
ptextln("\nThe following attributes should not work correctly with color. (ncv)\n");
for (i = 1; i <= 9; i++) {
if ((no_color_video >> (mode_map[i] - 1)) & 1) {
ncv_display(mode_map[i]);
}
}
}
reset_colors();
put_crlf();
generic_done_message(t, state, ch);
}
/*
** color_bce(test_list, status, ch)
**
** test (bce) background color erase
*/
static void
color_bce(
struct test_list *t,
int *state,
int *ch)
{
new_color(COLOR_CYAN, COLOR_BLUE, FALSE);
put_clear();
put_newlines(2);
reset_colors();
ptextln("If the two lines above are blue then back_color_erase (bce) should be true.");
sprintf(temp, "(bce) is %s in the data base.", back_color_erase ? "true" : "false");
ptextln(temp);
generic_done_message(t, state, ch);
}
/*
** color_ccc(test_list, status, ch)
**
** test (ccc) color palette test (oc) (op) (initc) (initp)
*/
static void
color_ccc(
struct test_list *t,
int *state,
int *ch)
{
int i, j;
if (!can_change) {
ptextln("Terminal can not change colors (ccc)");
generic_done_message(t, state, ch);
return;
}
reset_colors();
pairs_used = 0;
new_color(COLOR_WHITE, COLOR_BLACK, FALSE);
sprintf(temp, "Reloading colors (init%c) using %s method",
set_foreground ? 'c' : 'p',
hue_lightness_saturation ? "HLS" : "RGB");
ptextln(temp);
put_crlf();
j = max_colors > 7 ? 7 : max_colors;
/* redisplay the above test with reinitialized colors */
/* If these colors don't look right to you... */
for (i = 0; i < j; i++) {
sprintf(temp, " %s ", def_colors[i ^ 7].name);
new_color(i ^ 7, COLOR_BLACK, TRUE);
put_str(temp);
new_color(COLOR_BLACK, COLOR_BLACK, TRUE);
put_str(" ");
new_color(COLOR_BLACK, i ^ 7, TRUE);
put_str(temp);
new_color(COLOR_WHITE, COLOR_BLACK, FALSE);
put_crlf();
}
generic_done_message(t, state, ch);
if (*ch != 0 && *ch != 'n') {
reset_colors();
return;
}
pairs_used = 0;
cookie_monster = 0;
if (magic_cookie_glitch > 0) {
cookie_monster =
((set_a_foreground || set_foreground)
? magic_cookie_glitch : 0) +
((set_a_background || set_background)
? magic_cookie_glitch : 0) +
(set_color_pair ? magic_cookie_glitch : 0);
}
set_color_step();
colors_per_line = max_colors > max_pairs
? max_pairs : max_colors;
j = (columns - 14) / (cookie_monster + 1);
if (colors_per_line > j) {
colors_per_line = (j / i) * i;
}
sprintf(temp, "RGB color step %d, cookies %d", color_step,
cookie_monster);
ptextln(temp);
R = G = B = 0;
pairs_used = 0;
for (;;) {
if (rainbow(colors_per_line)) {
break;
}
}
generic_done_message(t, state, ch);
if (*ch != 0 && *ch != 'n') {
reset_colors();
return;
}
dump_colors();
reset_colors();
generic_done_message(t, state, ch);
}