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Diffstat (limited to 'colors.c')
| -rw-r--r-- | colors.c | 336 |
1 files changed, 336 insertions, 0 deletions
diff --git a/colors.c b/colors.c new file mode 100644 index 000000000..f70969390 --- /dev/null +++ b/colors.c @@ -0,0 +1,336 @@ +/* + * (c) 2004 by Kalle Wallin (kaw@linux.se) + * + * 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 of the License, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ncurses.h> +#include <glib.h> + +#include "config.h" +#include "options.h" +#include "support.h" +#include "colors.h" + +#ifdef DEBUG +#define D(x) x +#else +#define D(x) +#endif + +#define COLOR_BRIGHT_MASK (1<<7) + +#define COLOR_BRIGHT_BLACK (COLOR_BLACK | COLOR_BRIGHT_MASK) +#define COLOR_BRIGHT_RED (COLOR_RED | COLOR_BRIGHT_MASK) +#define COLOR_BRIGHT_GREEN (COLOR_GREEN | COLOR_BRIGHT_MASK) +#define COLOR_BRIGHT_YELLOW (COLOR_YELLOW | COLOR_BRIGHT_MASK) +#define COLOR_BRIGHT_BLUE (COLOR_BLUE | COLOR_BRIGHT_MASK) +#define COLOR_BRIGHT_MAGENTA (COLOR_MAGENTA | COLOR_BRIGHT_MASK) +#define COLOR_BRIGHT_CYAN (COLOR_CYAN | COLOR_BRIGHT_MASK) +#define COLOR_BRIGHT_WHITE (COLOR_WHITE | COLOR_BRIGHT_MASK) + +#define IS_BRIGHT(color) (color & COLOR_BRIGHT_MASK) + +/* name of the color fields */ +#define NAME_TITLE "title" +#define NAME_TITLE_BOLD "title-bold" +#define NAME_LINE "line" +#define NAME_LINE_BOLD "line-flags" +#define NAME_LIST "list" +#define NAME_LIST_BOLD "list-bold" +#define NAME_PROGRESS "progressbar" +#define NAME_STATUS "status-song" +#define NAME_STATUS_BOLD "status-state" +#define NAME_STATUS_TIME "status-time" +#define NAME_ALERT "alert" +#define NAME_BGCOLOR "background" + +typedef struct { + short color; + short r,g,b; +} color_definition_entry_t; + +typedef struct { + int id; + char *name; + short fg; + attr_t attrs; +} color_entry_t; + +static color_entry_t colors[] = { + + /* color pair, field name, color, mono attribute */ + /*-------------------------------------------------------------------------*/ + { COLOR_TITLE, NAME_TITLE, COLOR_YELLOW, A_NORMAL }, + { COLOR_TITLE_BOLD, NAME_TITLE_BOLD, COLOR_BRIGHT_YELLOW, A_BOLD }, + { COLOR_LINE, NAME_LINE, COLOR_WHITE, A_NORMAL }, + { COLOR_LINE_BOLD, NAME_LINE_BOLD, COLOR_BRIGHT_WHITE, A_BOLD }, + { COLOR_LIST, NAME_LIST, COLOR_GREEN, A_NORMAL }, + { COLOR_LIST_BOLD, NAME_LIST_BOLD, COLOR_BRIGHT_GREEN, A_BOLD }, + { COLOR_PROGRESSBAR, NAME_PROGRESS, COLOR_WHITE, A_NORMAL }, + { COLOR_STATUS, NAME_STATUS, COLOR_YELLOW, A_NORMAL }, + { COLOR_STATUS_BOLD, NAME_STATUS_BOLD, COLOR_BRIGHT_YELLOW, A_BOLD }, + { COLOR_STATUS_TIME, NAME_STATUS_TIME, COLOR_RED, A_NORMAL }, + { COLOR_STATUS_ALERT, NAME_ALERT, COLOR_BRIGHT_RED, A_BOLD }, + { 0, NULL, 0, 0 } +}; + +/* background color */ +static short bg = COLOR_BLACK; + +static GList *color_definition_list = NULL; + +static color_entry_t * +colors_lookup(int id) +{ + int i; + + i=0; + while( colors[i].name != NULL ) + { + if( colors[i].id == id ) + return &colors[i]; + i++; + } + return NULL; +} + +static color_entry_t * +colors_lookup_by_name(char *name) +{ + int i; + + i=0; + while( colors[i].name != NULL ) + { + if( !strcasecmp(colors[i].name, name) ) + return &colors[i]; + i++; + } + return NULL; +} + +static int +colors_update_pair(int id) +{ + color_entry_t *entry = colors_lookup(id); + short fg = -1; + + if( !entry ) + return -1; + + if( IS_BRIGHT(entry->fg) ) + { + entry->attrs = A_BOLD; + fg = entry->fg & ~COLOR_BRIGHT_MASK; + } + else + { + entry->attrs = A_NORMAL; + fg = entry->fg; + } + + init_pair(entry->id, fg, bg); + + return 0; +} + +short +colors_str2color(char *str) +{ + if( !strcasecmp(str,"black") ) + return COLOR_BLACK; + else if( !strcasecmp(str,"red") ) + return COLOR_RED; + else if( !strcasecmp(str,"green") ) + return COLOR_GREEN; + else if( !strcasecmp(str,"yellow") ) + return COLOR_YELLOW; + else if( !strcasecmp(str,"blue") ) + return COLOR_BLUE; + else if( !strcasecmp(str,"magenta") ) + return COLOR_MAGENTA; + else if( !strcasecmp(str,"cyan") ) + return COLOR_CYAN; + else if( !strcasecmp(str,"white") ) + return COLOR_WHITE; + else if( !strcasecmp(str,"brightred") ) + return COLOR_BRIGHT_RED; + else if( !strcasecmp(str,"brightgreen") ) + return COLOR_BRIGHT_GREEN; + else if( !strcasecmp(str,"brightyellow") ) + return COLOR_BRIGHT_YELLOW; + else if( !strcasecmp(str,"brightblue") ) + return COLOR_BRIGHT_BLUE; + else if( !strcasecmp(str,"brightmagenta") ) + return COLOR_BRIGHT_MAGENTA; + else if( !strcasecmp(str,"brightcyan") ) + return COLOR_BRIGHT_CYAN; + else if( !strcasecmp(str,"brightwhite") ) + return COLOR_BRIGHT_WHITE; + else if( !strcasecmp(str,"grey") || !strcasecmp(str,"gray") ) + return COLOR_BRIGHT_BLACK; + else if( !strcasecmp(str,"none") ) + return -1; + fprintf(stderr,"Warning: Unknown color - %s\n", str); + return -2; +} + +/* This function is called from conf.c before curses have been started, + * it adds the definition to the color_definition_list and init_color() is + * done in colors_start() */ +int +colors_define(char *name, short r, short g, short b) +{ + color_definition_entry_t *entry; + short color = colors_str2color(name); + + if( color<0 ) + return -1; + + entry = g_malloc(sizeof(color_definition_entry_t)); + entry->color = color; + entry->r = r; + entry->g = g; + entry->b = b; + + color_definition_list = g_list_append(color_definition_list, entry); + + return 0; +} + + +int +colors_assign(char *name, char *value) +{ + color_entry_t *entry = colors_lookup_by_name(name); + short color; + + if( !entry ) + { + if( !strcasecmp(NAME_BGCOLOR, name) ) + { + if( (color=colors_str2color(value)) < -1 ) + return -1; + if( color > COLORS ) + color = color & ~COLOR_BRIGHT_MASK; + bg = color; + return 0; + } + fprintf(stderr,"Warning: Unknown color field - %s\n", name); + return -1; + } + + if( (color=colors_str2color(value)) < -1 ) + return -1; + entry->fg = color; + + return 0; +} + + +int +colors_start(void) +{ + if( has_colors() ) + { + /* initialize color support */ + start_color(); + use_default_colors(); + /* define any custom colors defined in the configuration file */ + if( color_definition_list && can_change_color() ) + { + GList *list = color_definition_list; + + while( list ) + { + color_definition_entry_t *entry = list->data; + + if( entry->color <= COLORS ) + init_color(entry->color, entry->r, entry->g, entry->b); + list=list->next; + } + } + else if( !can_change_color() ) + fprintf(stderr, "Terminal lacks support for changing colors!\n"); + + if( options.enable_colors ) + { + int i = 0; + + while(colors[i].name) + { + /* update the color pairs */ + colors_update_pair(colors[i].id); + i++; + } + + } + } + else if( options.enable_colors ) + { + fprintf(stderr, "Terminal lacks color capabilities!\n"); + options.enable_colors = 0; + } + + /* free the color_definition_list */ + if( color_definition_list ) + { + GList *list = color_definition_list; + + while( list ) + { + g_free(list->data); + list=list->next; + } + g_list_free(color_definition_list); + color_definition_list = NULL; + } + + return 0; +} + + +int +colors_use(WINDOW *w, int id) +{ + color_entry_t *entry = colors_lookup(id); + short pair; + attr_t attrs; + + if( !entry ) + return -1; + + wattr_get(w, &attrs, &pair, NULL); + + if( options.enable_colors ) + { + /* color mode */ + if( attrs != entry->attrs || id!=pair ) + wattr_set(w, entry->attrs, id, NULL); + } + else + { + /* mono mode */ + if( attrs != entry->attrs ) + wattrset(w, entry->attrs); + } + + return 0; +} + |