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-rw-r--r--ncurses-5.3/ncurses/base/lib_color.c531
1 files changed, 0 insertions, 531 deletions
diff --git a/ncurses-5.3/ncurses/base/lib_color.c b/ncurses-5.3/ncurses/base/lib_color.c
deleted file mode 100644
index f6531ed..0000000
--- a/ncurses-5.3/ncurses/base/lib_color.c
+++ /dev/null
@@ -1,531 +0,0 @@
-/****************************************************************************
- * Copyright (c) 1998-2001,2002 Free Software Foundation, Inc. *
- * *
- * Permission is hereby granted, free of charge, to any person obtaining a *
- * copy of this software and associated documentation files (the *
- * "Software"), to deal in the Software without restriction, including *
- * without limitation the rights to use, copy, modify, merge, publish, *
- * distribute, distribute with modifications, sublicense, and/or sell *
- * copies of the Software, and to permit persons to whom the Software is *
- * furnished to do so, subject to the following conditions: *
- * *
- * The above copyright notice and this permission notice shall be included *
- * in all copies or substantial portions of the Software. *
- * *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
- * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
- * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
- * *
- * Except as contained in this notice, the name(s) of the above copyright *
- * holders shall not be used in advertising or otherwise to promote the *
- * sale, use or other dealings in this Software without prior written *
- * authorization. *
- ****************************************************************************/
-
-/****************************************************************************
- * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
- * and: Eric S. Raymond <esr@snark.thyrsus.com> *
- ****************************************************************************/
-
-/* lib_color.c
- *
- * Handles color emulation of SYS V curses
- */
-
-#include <curses.priv.h>
-
-#include <term.h>
-#include <tic.h>
-
-MODULE_ID("$Id$")
-
-/*
- * These should be screen structure members. They need to be globals for
- * historical reasons. So we assign them in start_color() and also in
- * set_term()'s screen-switching logic.
- */
-NCURSES_EXPORT_VAR(int) COLOR_PAIRS = 0;
-NCURSES_EXPORT_VAR(int) COLORS = 0;
-
-#define DATA(r,g,b) {r,g,b, 0,0,0, 0}
-
-/*
- * Given a RGB range of 0..1000, we'll normally set the individual values
- * to about 2/3 of the maximum, leaving full-range for bold/bright colors.
- */
-#define RGB_ON 680
-#define RGB_OFF 0
-/* *INDENT-OFF* */
-static const color_t cga_palette[] =
-{
- /* R G B */
- DATA(RGB_OFF, RGB_OFF, RGB_OFF), /* COLOR_BLACK */
- DATA(RGB_ON, RGB_OFF, RGB_OFF), /* COLOR_RED */
- DATA(RGB_OFF, RGB_ON, RGB_OFF), /* COLOR_GREEN */
- DATA(RGB_ON, RGB_ON, RGB_OFF), /* COLOR_YELLOW */
- DATA(RGB_OFF, RGB_OFF, RGB_ON), /* COLOR_BLUE */
- DATA(RGB_ON, RGB_OFF, RGB_ON), /* COLOR_MAGENTA */
- DATA(RGB_OFF, RGB_ON, RGB_ON), /* COLOR_CYAN */
- DATA(RGB_ON, RGB_ON, RGB_ON), /* COLOR_WHITE */
-};
-
-static const color_t hls_palette[] =
-{
- /* H L S */
- DATA( 0, 0, 0), /* COLOR_BLACK */
- DATA( 120, 50, 100), /* COLOR_RED */
- DATA( 240, 50, 100), /* COLOR_GREEN */
- DATA( 180, 50, 100), /* COLOR_YELLOW */
- DATA( 330, 50, 100), /* COLOR_BLUE */
- DATA( 60, 50, 100), /* COLOR_MAGENTA */
- DATA( 300, 50, 100), /* COLOR_CYAN */
- DATA( 0, 50, 100), /* COLOR_WHITE */
-};
-/* *INDENT-ON* */
-
-#if NCURSES_EXT_FUNCS
-/*
- * These are called from _nc_do_color(), which in turn is called from
- * vidattr - so we have to assume that SP may be null.
- */
-static int
-default_fg(void)
-{
- return (SP != 0) ? SP->_default_fg : COLOR_WHITE;
-}
-
-static int
-default_bg(void)
-{
- return SP != 0 ? SP->_default_bg : COLOR_BLACK;
-}
-#else
-#define default_fg() COLOR_WHITE
-#define default_bg() COLOR_BLACK
-#endif
-
-/*
- * SVr4 curses is known to interchange color codes (1,4) and (3,6), possibly
- * to maintain compatibility with a pre-ANSI scheme. The same scheme is
- * also used in the FreeBSD syscons.
- */
-static int
-toggled_colors(int c)
-{
- if (c < 16) {
- static const int table[] =
- {0, 4, 2, 6, 1, 5, 3, 7,
- 8, 12, 10, 14, 9, 13, 11, 15};
- c = table[c];
- }
- return c;
-}
-
-static void
-set_background_color(int bg, int (*outc) (int))
-{
- if (set_a_background) {
- TPUTS_TRACE("set_a_background");
- tputs(tparm(set_a_background, bg), 1, outc);
- } else {
- TPUTS_TRACE("set_background");
- tputs(tparm(set_background, toggled_colors(bg)), 1, outc);
- }
-}
-
-static void
-set_foreground_color(int fg, int (*outc) (int))
-{
- if (set_a_foreground) {
- TPUTS_TRACE("set_a_foreground");
- tputs(tparm(set_a_foreground, fg), 1, outc);
- } else {
- TPUTS_TRACE("set_foreground");
- tputs(tparm(set_foreground, toggled_colors(fg)), 1, outc);
- }
-}
-
-static void
-init_color_table(void)
-{
- const color_t *tp;
- int n;
-
- tp = (hue_lightness_saturation) ? hls_palette : cga_palette;
- for (n = 0; n < COLORS; n++) {
- if (n < 8) {
- SP->_color_table[n] = tp[n];
- } else {
- SP->_color_table[n] = tp[n % 8];
- if (hue_lightness_saturation) {
- SP->_color_table[n].green = 100;
- } else {
- if (SP->_color_table[n].red)
- SP->_color_table[n].red = 1000;
- if (SP->_color_table[n].green)
- SP->_color_table[n].green = 1000;
- if (SP->_color_table[n].blue)
- SP->_color_table[n].blue = 1000;
- }
- }
- }
-}
-
-/*
- * Reset the color pair, e.g., to whatever color pair 0 is.
- */
-static bool
-reset_color_pair(void)
-{
- bool result = FALSE;
-
- if (orig_pair != 0) {
- TPUTS_TRACE("orig_pair");
- putp(orig_pair);
- result = TRUE;
- }
- return result;
-}
-
-/*
- * Reset color pairs and definitions. Actually we do both more to accommodate
- * badly-written terminal descriptions than for the relatively rare case where
- * someone has changed the color definitions.
- */
-bool
-_nc_reset_colors(void)
-{
- int result = FALSE;
-
- T((T_CALLED("_nc_reset_colors()")));
- if (SP->_color_defs > 0)
- SP->_color_defs = -(SP->_color_defs);
-
- if (reset_color_pair())
- result = TRUE;
- if (orig_colors != 0) {
- TPUTS_TRACE("orig_colors");
- putp(orig_colors);
- result = TRUE;
- }
- returnBool(result);
-}
-
-NCURSES_EXPORT(int)
-start_color(void)
-{
- int result = ERR;
-
- T((T_CALLED("start_color()")));
-
- if (!SP->_coloron) {
-
- if (reset_color_pair() != TRUE) {
- set_foreground_color(default_fg(), _nc_outch);
- set_background_color(default_bg(), _nc_outch);
- }
-
- if (max_pairs > 0 && max_colors > 0) {
- COLOR_PAIRS = SP->_pair_count = max_pairs;
- COLORS = SP->_color_count = max_colors;
-
- if ((SP->_color_pairs = typeCalloc(unsigned short,
- (unsigned) max_pairs)) != 0) {
- if ((SP->_color_table = typeCalloc(color_t, max_colors)) != 0) {
- SP->_color_pairs[0] = PAIR_OF(default_fg(), default_bg());
- init_color_table();
-
- T(("started color: COLORS = %d, COLOR_PAIRS = %d",
- COLORS, COLOR_PAIRS));
-
- SP->_coloron = 1;
- result = OK;
- } else {
- FreeAndNull(SP->_color_pairs);
- }
- }
- }
- }
- returnCode(OK);
-}
-
-/* This function was originally written by Daniel Weaver <danw@znyx.com> */
-static void
-rgb2hls(short r, short g, short b, short *h, short *l, short *s)
-/* convert RGB to HLS system */
-{
- short 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;
-}
-
-/*
- * Extension (1997/1/18) - Allow negative f/b values to set default color
- * values.
- */
-NCURSES_EXPORT(int)
-init_pair(short pair, short f, short b)
-{
- unsigned result;
-
- T((T_CALLED("init_pair(%d,%d,%d)"), pair, f, b));
-
- if ((pair < 0) || (pair >= COLOR_PAIRS))
- returnCode(ERR);
-#if NCURSES_EXT_FUNCS
- if (SP->_default_color) {
- if (f < 0)
- f = C_MASK;
- if (b < 0)
- b = C_MASK;
- if (f >= COLORS && f != C_MASK)
- returnCode(ERR);
- if (b >= COLORS && b != C_MASK)
- returnCode(ERR);
- } else
-#endif
- {
- if ((f < 0) || (f >= COLORS)
- || (b < 0) || (b >= COLORS)
- || (pair < 1))
- returnCode(ERR);
- }
-
- /*
- * When a pair's content is changed, replace its colors (if pair was
- * initialized before a screen update is performed replacing original
- * pair colors with the new ones).
- */
- result = PAIR_OF(f, b);
- if (SP->_color_pairs[pair] != 0
- && SP->_color_pairs[pair] != result) {
- int y, x;
- attr_t z = COLOR_PAIR(pair);
-
- for (y = 0; y <= curscr->_maxy; y++) {
- struct ldat *ptr = &(curscr->_line[y]);
- bool changed = FALSE;
- for (x = 0; x <= curscr->_maxx; x++) {
- if ((AttrOf(ptr->text[x]) & A_COLOR) == z) {
- /* Set the old cell to zero to ensure it will be
- updated on the next doupdate() */
- SetChar(ptr->text[x], 0, 0);
- CHANGED_CELL(ptr, x);
- changed = TRUE;
- }
- }
- if (changed)
- _nc_make_oldhash(y);
- }
- }
- SP->_color_pairs[pair] = result;
- if ((int) (SP->_current_attr & A_COLOR) == COLOR_PAIR(pair))
- SP->_current_attr |= A_COLOR; /* force attribute update */
-
- if (initialize_pair) {
- const color_t *tp = hue_lightness_saturation ? hls_palette : cga_palette;
-
- T(("initializing pair: pair = %d, fg=(%d,%d,%d), bg=(%d,%d,%d)",
- pair,
- tp[f].red, tp[f].green, tp[f].blue,
- tp[b].red, tp[b].green, tp[b].blue));
-
- if (initialize_pair) {
- TPUTS_TRACE("initialize_pair");
- putp(tparm(initialize_pair,
- pair,
- tp[f].red, tp[f].green, tp[f].blue,
- tp[b].red, tp[b].green, tp[b].blue));
- }
- }
-
- returnCode(OK);
-}
-
-#define okRGB(n) ((n) >= 0 && (n) < 1000)
-
-NCURSES_EXPORT(int)
-init_color(short color, short r, short g, short b)
-{
- int result = ERR;
-
- T((T_CALLED("init_color(%d,%d,%d,%d)"), color, r, g, b));
-
- if (initialize_color != NULL
- && (color >= 0 && color < COLORS)
- && (okRGB(r) && okRGB(g) && okRGB(b))) {
-
- SP->_color_table[color].init = 1;
- SP->_color_table[color].r = r;
- SP->_color_table[color].g = g;
- SP->_color_table[color].b = b;
-
- if (hue_lightness_saturation) {
- rgb2hls(r, g, b,
- &SP->_color_table[color].red,
- &SP->_color_table[color].green,
- &SP->_color_table[color].blue);
- } else {
- SP->_color_table[color].red = r;
- SP->_color_table[color].green = g;
- SP->_color_table[color].blue = b;
- }
-
- TPUTS_TRACE("initialize_color");
- putp(tparm(initialize_color, color, r, g, b));
- SP->_color_defs = max(color + 1, SP->_color_defs);
- result = OK;
- }
- returnCode(result);
-}
-
-NCURSES_EXPORT(bool)
-can_change_color(void)
-{
- T((T_CALLED("can_change_color()")));
- returnCode((can_change != 0) ? TRUE : FALSE);
-}
-
-NCURSES_EXPORT(bool)
-has_colors(void)
-{
- T((T_CALLED("has_colors()")));
- returnCode((VALID_NUMERIC(max_colors) && VALID_NUMERIC(max_pairs)
- && (((set_foreground != NULL)
- && (set_background != NULL))
- || ((set_a_foreground != NULL)
- && (set_a_background != NULL))
- || set_color_pair)) ? TRUE : FALSE);
-}
-
-NCURSES_EXPORT(int)
-color_content(short color, short *r, short *g, short *b)
-{
- T((T_CALLED("color_content(%d,%p,%p,%p)"), color, r, g, b));
- if (color < 0 || color >= COLORS)
- returnCode(ERR);
-
- if (r)
- *r = SP->_color_table[color].red;
- if (g)
- *g = SP->_color_table[color].green;
- if (b)
- *b = SP->_color_table[color].blue;
- T(("...color_content(%d,%d,%d,%d)", color, *r, *g, *b));
- returnCode(OK);
-}
-
-NCURSES_EXPORT(int)
-pair_content(short pair, short *f, short *b)
-{
- T((T_CALLED("pair_content(%d,%p,%p)"), pair, f, b));
-
- if ((pair < 0) || (pair >= COLOR_PAIRS))
- returnCode(ERR);
- if (f)
- *f = ((SP->_color_pairs[pair] >> C_SHIFT) & C_MASK);
- if (b)
- *b = (SP->_color_pairs[pair] & C_MASK);
-
- T(("...pair_content(%d,%d,%d)", pair, *f, *b));
- returnCode(OK);
-}
-
-NCURSES_EXPORT(void)
-_nc_do_color(int old_pair, int pair, bool reverse, int (*outc) (int))
-{
- NCURSES_COLOR_T fg = C_MASK, bg = C_MASK;
- NCURSES_COLOR_T old_fg, old_bg;
-
- if (pair < 0 || pair >= COLOR_PAIRS) {
- return;
- } else if (pair != 0) {
- if (set_color_pair) {
- TPUTS_TRACE("set_color_pair");
- tputs(tparm(set_color_pair, pair), 1, outc);
- return;
- } else if (SP != 0) {
- pair_content(pair, &fg, &bg);
- }
- }
-
- if (old_pair >= 0
- && SP != 0
- && pair_content(old_pair, &old_fg, &old_bg) != ERR) {
- if ((fg == C_MASK && old_fg != C_MASK)
- || (bg == C_MASK && old_bg != C_MASK)) {
-#if NCURSES_EXT_FUNCS
- /*
- * A minor optimization - but extension. If "AX" is specified in
- * the terminal description, treat it as screen's indicator of ECMA
- * SGR 39 and SGR 49, and assume the two sequences are independent.
- */
- if (SP->_has_sgr_39_49 && old_bg == C_MASK && old_fg != C_MASK) {
- tputs("\033[39m", 1, outc);
- } else if (SP->_has_sgr_39_49 && old_fg == C_MASK && old_bg != C_MASK) {
- tputs("\033[49m", 1, outc);
- } else
-#endif
- reset_color_pair();
- }
- } else {
- reset_color_pair();
- if (old_pair < 0)
- return;
- }
-
-#if NCURSES_EXT_FUNCS
- if (fg == C_MASK)
- fg = default_fg();
- if (bg == C_MASK)
- bg = default_bg();
-#endif
-
- if (reverse) {
- NCURSES_COLOR_T xx = fg;
- fg = bg;
- bg = xx;
- }
-
- TR(TRACE_ATTRS, ("setting colors: pair = %d, fg = %d, bg = %d", pair,
- fg, bg));
-
- if (fg != C_MASK) {
- set_foreground_color(fg, outc);
- }
- if (bg != C_MASK) {
- set_background_color(bg, outc);
- }
-}
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