X-Git-Url: http://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Fbase%2Flib_color.c;h=86c3fba32cbb057579bf0078904ed358988b9094;hp=492194babbfbb7de35b1204bbb20737bb487667c;hb=refs%2Ftags%2Fv5.3;hpb=c633e5103a29a38532cf1925257b91cea33fd090 diff --git a/ncurses/base/lib_color.c b/ncurses/base/lib_color.c index 492194ba..86c3fba3 100644 --- a/ncurses/base/lib_color.c +++ b/ncurses/base/lib_color.c @@ -1,5 +1,5 @@ /**************************************************************************** - * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc. * + * 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 * @@ -41,15 +41,17 @@ #include #include -MODULE_ID("$Id: lib_color.c,v 1.53 2000/09/02 18:02:15 tom Exp $") +MODULE_ID("$Id: lib_color.c,v 1.62 2002/09/28 20:40:05 tom Exp $") /* * 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. */ -int COLOR_PAIRS = 0; -int COLORS = 0; +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 @@ -61,27 +63,27 @@ int COLORS = 0; static const color_t cga_palette[] = { /* R G B */ - {RGB_OFF, RGB_OFF, RGB_OFF}, /* COLOR_BLACK */ - {RGB_ON, RGB_OFF, RGB_OFF}, /* COLOR_RED */ - {RGB_OFF, RGB_ON, RGB_OFF}, /* COLOR_GREEN */ - {RGB_ON, RGB_ON, RGB_OFF}, /* COLOR_YELLOW */ - {RGB_OFF, RGB_OFF, RGB_ON}, /* COLOR_BLUE */ - {RGB_ON, RGB_OFF, RGB_ON}, /* COLOR_MAGENTA */ - {RGB_OFF, RGB_ON, RGB_ON}, /* COLOR_CYAN */ - {RGB_ON, RGB_ON, RGB_ON}, /* COLOR_WHITE */ + 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 */ - { 0, 0, 0}, /* COLOR_BLACK */ - { 120, 50, 100}, /* COLOR_RED */ - { 240, 50, 100}, /* COLOR_GREEN */ - { 180, 50, 100}, /* COLOR_YELLOW */ - { 330, 50, 100}, /* COLOR_BLUE */ - { 60, 50, 100}, /* COLOR_MAGENTA */ - { 300, 50, 100}, /* COLOR_CYAN */ - { 0, 50, 100}, /* COLOR_WHITE */ + /* 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* */ @@ -117,7 +119,7 @@ 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}; + 8, 12, 10, 14, 9, 13, 11, 15}; c = table[c]; } return c; @@ -147,49 +149,12 @@ set_foreground_color(int fg, int (*outc) (int)) } } -static bool -set_original_colors(void) -{ - if (orig_pair != 0) { - TPUTS_TRACE("orig_pair"); - putp(orig_pair); - return TRUE; - } else if (orig_colors != NULL) { - TPUTS_TRACE("orig_colors"); - putp(orig_colors); - return TRUE; - } - return FALSE; -} - -int -start_color(void) +static void +init_color_table(void) { - int n; const color_t *tp; + int n; - T((T_CALLED("start_color()"))); - - if (set_original_colors() != TRUE) { - set_foreground_color(default_fg(), _nc_outch); - set_background_color(default_bg(), _nc_outch); - } - - if (VALID_NUMERIC(max_pairs)) - COLOR_PAIRS = SP->_pair_count = max_pairs; - else - returnCode(ERR); - if ((SP->_color_pairs = typeCalloc(unsigned short, max_pairs)) == 0) - returnCode(ERR); - SP->_color_pairs[0] = PAIR_OF(default_fg(), default_bg()); - if (VALID_NUMERIC(max_colors)) - COLORS = SP->_color_count = max_colors; - else - returnCode(ERR); - SP->_coloron = 1; - - if ((SP->_color_table = typeMalloc(color_t, COLORS)) == 0) - returnCode(ERR); tp = (hue_lightness_saturation) ? hls_palette : cga_palette; for (n = 0; n < COLORS; n++) { if (n < 8) { @@ -208,9 +173,83 @@ start_color(void) } } } +} + +/* + * 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); + } - T(("started color: COLORS = %d, COLOR_PAIRS = %d", COLORS, COLOR_PAIRS)); + 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); } @@ -256,7 +295,7 @@ rgb2hls(short r, short g, short b, short *h, short *l, short *s) * Extension (1997/1/18) - Allow negative f/b values to set default color * values. */ -int +NCURSES_EXPORT(int) init_pair(short pair, short f, short b) { unsigned result; @@ -299,10 +338,10 @@ init_pair(short pair, short f, short b) struct ldat *ptr = &(curscr->_line[y]); bool changed = FALSE; for (x = 0; x <= curscr->_maxx; x++) { - if ((ptr->text[x] & A_COLOR) == z) { + if ((AttrOf(ptr->text[x]) & A_COLOR) == z) { /* Set the old cell to zero to ensure it will be updated on the next doupdate() */ - ptr->text[x] = 0; + SetChar(ptr->text[x], 0, 0); CHANGED_CELL(ptr, x); changed = TRUE; } @@ -319,73 +358,79 @@ init_pair(short pair, short f, short b) 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)); + 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)); + pair, + tp[f].red, tp[f].green, tp[f].blue, + tp[b].red, tp[b].green, tp[b].blue)); } } returnCode(OK); } -int +#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) - returnCode(ERR); + if (initialize_color != NULL + && (color >= 0 && color < COLORS) + && (okRGB(r) && okRGB(g) && okRGB(b))) { - if (color < 0 || color >= COLORS) - returnCode(ERR); - if (r < 0 || r > 1000 || g < 0 || g > 1000 || b < 0 || b > 1000) - returnCode(ERR); + 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; - } + 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; + } - if (initialize_color) { TPUTS_TRACE("initialize_color"); putp(tparm(initialize_color, color, r, g, b)); + SP->_color_defs = max(color + 1, SP->_color_defs); + result = OK; } - returnCode(OK); + returnCode(result); } -bool +NCURSES_EXPORT(bool) can_change_color(void) { T((T_CALLED("can_change_color()"))); returnCode((can_change != 0) ? TRUE : FALSE); } -bool +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); + && (((set_foreground != NULL) + && (set_background != NULL)) + || ((set_a_foreground != NULL) + && (set_a_background != NULL)) + || set_color_pair)) ? TRUE : FALSE); } -int +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)); @@ -398,10 +443,11 @@ color_content(short color, short *r, short *g, short *b) *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); } -int +NCURSES_EXPORT(int) pair_content(short pair, short *f, short *b) { T((T_CALLED("pair_content(%d,%p,%p)"), pair, f, b)); @@ -413,10 +459,11 @@ pair_content(short pair, short *f, short *b) if (b) *b = (SP->_color_pairs[pair] & C_MASK); + T(("...pair_content(%d,%d,%d)", pair, *f, *b)); returnCode(OK); } -void +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; @@ -434,8 +481,9 @@ _nc_do_color(int old_pair, int pair, bool reverse, int (*outc) (int)) } } - if (old_pair >= 0 && SP != 0) { - pair_content(old_pair, &old_fg, &old_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 @@ -450,10 +498,10 @@ _nc_do_color(int old_pair, int pair, bool reverse, int (*outc) (int)) tputs("\033[49m", 1, outc); } else #endif - set_original_colors(); + reset_color_pair(); } } else { - set_original_colors(); + reset_color_pair(); if (old_pair < 0) return; } @@ -471,7 +519,8 @@ _nc_do_color(int old_pair, int pair, bool reverse, int (*outc) (int)) bg = xx; } - TR(TRACE_ATTRS, ("setting colors: pair = %d, fg = %d, bg = %d", pair, fg, bg)); + TR(TRACE_ATTRS, ("setting colors: pair = %d, fg = %d, bg = %d", pair, + fg, bg)); if (fg != C_MASK) { set_foreground_color(fg, outc);