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True color (24-bit) terminal support for emacs-24.3
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This diff is a modified version of a diff written by Rüdiger Sonderfeld. | |
The original diff can be found here: | |
http://emacs.1067599.n5.nabble.com/RFC-Add-tty-True-Color-support-tt299962.html | |
To enable the feature one must set one of 2 environment variables either | |
ITERM_24BIT or KONSOLE_DBUS_SESSION. The former will enable ITU T.416 mode, the | |
latter will use semi-colon seperators used by other terminals (and also | |
supported by iterm development branch). | |
I've added ITERM_24BIT as an environment variable to set that will cause emacs | |
to use the : seperated values as specified by ITU T.416. These are apparently | |
better to use and supported by iterm development branch. | |
Other chagnes: | |
- modified map_tty_color to set the color into the pixel field. | |
- modified the colors defined to be the standard X11 list. | |
- modified tty-color-desc to add missing colors on demand. | |
*** ./lisp/term/tty-colors.el.orig 2013-01-01 15:37:17.000000000 -0500 | |
--- ./lisp/term/tty-colors.el 2014-09-02 19:29:50.000000000 -0400 | |
*************** | |
*** 1007,1017 **** | |
Value is a list of the form \(NAME INDEX R G B\). The returned NAME or | |
RGB value may not be the same as the argument COLOR, because the latter | |
might need to be approximated if it is not supported directly." | |
(and (stringp color) | |
(let ((color (tty-color-canonicalize color))) | |
! (or (assoc color (tty-color-alist frame)) | |
! (let ((rgb (tty-color-standard-values color))) | |
! (and rgb (tty-color-approximate rgb frame))))))) | |
(defun tty-color-gray-shades (&optional display) | |
"Return the number of gray colors supported by DISPLAY's terminal. | |
--- 1007,1027 ---- | |
Value is a list of the form \(NAME INDEX R G B\). The returned NAME or | |
RGB value may not be the same as the argument COLOR, because the latter | |
might need to be approximated if it is not supported directly." | |
+ ;; Here we are expeting to return (name idx (values)), be nice if we | |
+ ;; could just return the rgb, there is one use in | |
+ ;; read-face-attribute that uses the name unforutnately. To | |
+ ;; accomidate we just create entries with RGB values. | |
(and (stringp color) | |
(let ((color (tty-color-canonicalize color))) | |
! (or (assoc color (tty-color-alist frame)) | |
! (let ((rgb (tty-color-standard-values color)) elt len) | |
! (if rgb | |
! (if (< (display-color-cells frame) 16777216) | |
! (tty-color-approximate rgb frame) | |
! ;; Add this value to tty-color-alist | |
! (setq elt (append (list color (length tty-defined-color-alist)) rgb)) | |
! (tty-modify-color-alist elt frame) | |
! elt))))))) | |
(defun tty-color-gray-shades (&optional display) | |
"Return the number of gray colors supported by DISPLAY's terminal. | |
*** ./lisp/term/xterm.el.orig 2013-02-12 23:17:58.000000000 -0500 | |
--- ./lisp/term/xterm.el 2014-09-02 18:41:42.000000000 -0400 | |
*************** | |
*** 641,646 **** | |
--- 641,655 ---- | |
;; are more colors to support, compute them now. | |
(when (> ncolors 0) | |
(cond | |
+ ((= (display-color-cells (selected-frame)) 16777216) ; 24-bit xterm | |
+ (let ((idx (length xterm-standard-colors))) | |
+ ;; Insert standard X colors after the standard xterm ones | |
+ (mapc (lambda (color) | |
+ (if (not (assoc (car color) xterm-standard-colors)) | |
+ (progn | |
+ (tty-color-define (car color) idx (cdr color)) | |
+ (setq idx (1+ idx))))) | |
+ color-name-rgb-alist))) | |
((= ncolors 240) ; 256-color xterm | |
;; 216 non-gray colors first | |
(let ((r 0) (g 0) (b 0)) | |
*** ./README-24BIT.orig 2014-09-03 11:52:55.000000000 -0400 | |
--- ./README-24BIT 2014-09-03 11:54:21.000000000 -0400 | |
*************** | |
*** 0 **** | |
--- 1,19 ---- | |
+ This diff is a modified version of a diff written by Rüdiger Sonderfeld. | |
+ | |
+ The original diff can be found here: | |
+ http://emacs.1067599.n5.nabble.com/RFC-Add-tty-True-Color-support-tt299962.html | |
+ | |
+ To enable the feature one must set one of 2 environment variables either | |
+ ITERM_24BIT or KONSOLE_DBUS_SESSION. The former will enable ITU T.416 mode, the | |
+ latter will use semi-colon seperators used by other terminals (and also | |
+ supported by iterm development branch). If you also use tmux with the 24bit | |
+ patch you may need to use the latter environment variable. | |
+ | |
+ I've added ITERM_24BIT as an environment variable to set that will cause emacs | |
+ to use the : seperated values as specified by ITU T.416. These are apparently | |
+ better to use and supported by iterm development branch. | |
+ | |
+ Other chagnes: | |
+ - modified map_tty_color to set the color into the pixel field. | |
+ - modified the colors defined to be the standard X11 list. | |
+ - modified tty-color-desc to add missing colors on demand. | |
*** ./src/dispextern.h.orig 2013-01-01 15:37:17.000000000 -0500 | |
--- ./src/dispextern.h 2014-09-03 11:52:15.000000000 -0400 | |
*************** | |
*** 1677,1682 **** | |
--- 1677,1689 ---- | |
#define FACE_TTY_DEFAULT_BG_COLOR ((unsigned long) -3) | |
+ DISPEXTERN_INLINE bool | |
+ face_tty_specified_24_bit_color (unsigned long color) | |
+ { | |
+ /* 24 bit colors have 24th but not 25th bit set */ | |
+ return ((color & (0x03 << 24)) == (0x01 << 24)); | |
+ } | |
+ | |
/* Non-zero if FACE was realized for unibyte use. */ | |
#define FACE_UNIBYTE_P(FACE) ((FACE)->charset < 0) | |
*** ./src/term.c.orig 2013-01-01 15:37:17.000000000 -0500 | |
--- ./src/term.c 2014-09-02 18:59:47.000000000 -0400 | |
*************** | |
*** 1976,1993 **** | |
const char *ts; | |
char *p; | |
! ts = tty->standout_mode ? tty->TS_set_background : tty->TS_set_foreground; | |
if (fg >= 0 && ts) | |
{ | |
! p = tparam (ts, NULL, 0, (int) fg, 0, 0, 0); | |
OUTPUT (tty, p); | |
xfree (p); | |
} | |
! ts = tty->standout_mode ? tty->TS_set_foreground : tty->TS_set_background; | |
if (bg >= 0 && ts) | |
{ | |
! p = tparam (ts, NULL, 0, (int) bg, 0, 0, 0); | |
OUTPUT (tty, p); | |
xfree (p); | |
} | |
--- 1976,2015 ---- | |
const char *ts; | |
char *p; | |
! if (face_tty_specified_24_bit_color(fg)) | |
! ts = tty->standout_mode ? tty->TS_set_rgb_background : tty->TS_set_rgb_foreground; | |
! else | |
! ts = tty->standout_mode ? tty->TS_set_background : tty->TS_set_foreground; | |
if (fg >= 0 && ts) | |
{ | |
! if (!face_tty_specified_24_bit_color(fg)) | |
! p = tparam (ts, NULL, 0, (int) fg, 0, 0, 0); | |
! else | |
! { | |
! const unsigned char r = (fg >> 16) & 0xFF, | |
! g = (fg >> 8) & 0xFF, | |
! b = fg & 0xFF; | |
! p = tparam (ts, NULL, 0, (int)r, (int)g, (int)b, 0); | |
! } | |
OUTPUT (tty, p); | |
xfree (p); | |
} | |
! if (face_tty_specified_24_bit_color(bg)) | |
! ts = tty->standout_mode ? tty->TS_set_rgb_foreground : tty->TS_set_rgb_background; | |
! else | |
! ts = tty->standout_mode ? tty->TS_set_foreground : tty->TS_set_background; | |
if (bg >= 0 && ts) | |
{ | |
! if (!face_tty_specified_24_bit_color(bg)) | |
! p = tparam (ts, NULL, 0, (int) bg, 0, 0, 0); | |
! else | |
! { | |
! const unsigned char r = (bg >> 16) & 0xFF, | |
! g = (bg >> 8) & 0xFF, | |
! b = bg & 0xFF; | |
! p = tparam (ts, NULL, 0, (int)r, (int)g, (int)b, 0); | |
! } | |
OUTPUT (tty, p); | |
xfree (p); | |
} | |
*************** | |
*** 2091,2096 **** | |
--- 2113,2120 ---- | |
struct terminal *t = get_tty_terminal (terminal, 0); | |
if (!t) | |
return make_number (0); | |
+ else if (t->display_info.tty->TS_set_rgb_foreground) | |
+ return make_number (16777216); /* 24 bit True Color */ | |
else | |
return make_number (t->display_info.tty->TN_max_colors); | |
} | |
*************** | |
*** 2106,2111 **** | |
--- 2130,2137 ---- | |
static char *default_orig_pair; | |
static char *default_set_foreground; | |
static char *default_set_background; | |
+ static char *default_set_rgb_foreground; | |
+ static char *default_set_rgb_background; | |
/* Save or restore the default color-related capabilities of this | |
terminal. */ | |
*************** | |
*** 2126,2131 **** | |
--- 2152,2165 ---- | |
default_set_background = tty->TS_set_background ? xstrdup (tty->TS_set_background) | |
: NULL; | |
+ xfree (default_set_rgb_foreground); | |
+ default_set_rgb_foreground = tty->TS_set_rgb_foreground ? xstrdup (tty->TS_set_rgb_foreground) | |
+ : NULL; | |
+ | |
+ xfree (default_set_rgb_background); | |
+ default_set_rgb_background = tty->TS_set_rgb_background ? xstrdup (tty->TS_set_rgb_background) | |
+ : NULL; | |
+ | |
default_max_colors = tty->TN_max_colors; | |
default_max_pairs = tty->TN_max_pairs; | |
default_no_color_video = tty->TN_no_color_video; | |
*************** | |
*** 2135,2140 **** | |
--- 2169,2176 ---- | |
tty->TS_orig_pair = default_orig_pair; | |
tty->TS_set_foreground = default_set_foreground; | |
tty->TS_set_background = default_set_background; | |
+ tty->TS_set_rgb_foreground = default_set_rgb_foreground; | |
+ tty->TS_set_rgb_background = default_set_rgb_background; | |
tty->TN_max_colors = default_max_colors; | |
tty->TN_max_pairs = default_max_pairs; | |
tty->TN_no_color_video = default_no_color_video; | |
*************** | |
*** 2159,2164 **** | |
--- 2195,2201 ---- | |
tty->TN_max_pairs = 0; | |
tty->TN_no_color_video = 0; | |
tty->TS_set_foreground = tty->TS_set_background = tty->TS_orig_pair = NULL; | |
+ tty->TS_set_rgb_foreground = tty->TS_set_rgb_background = NULL; | |
break; | |
case 0: /* default colors, if any */ | |
default: | |
*************** | |
*** 2173,2182 **** | |
--- 2210,2238 ---- | |
tty->TS_set_foreground = "\033[3%dm"; | |
tty->TS_set_background = "\033[4%dm"; | |
#endif | |
+ tty->TS_set_rgb_foreground = NULL; | |
+ tty->TS_set_rgb_background = NULL; | |
tty->TN_max_colors = 8; | |
tty->TN_max_pairs = 64; | |
tty->TN_no_color_video = 0; | |
break; | |
+ case 16777216: /* RGB colors */ | |
+ tty->TS_orig_pair = "\033[0m"; | |
+ #ifdef TERMINFO | |
+ tty->TS_set_foreground = "\033[3%p1%dm"; | |
+ tty->TS_set_background = "\033[4%p1%dm"; | |
+ tty->TS_set_rgb_foreground = "\033[38;2;%p1%d;%p2%d;%p3%dm"; | |
+ tty->TS_set_rgb_background = "\033[48;2;%p1%d;%p2%d;%p3%dm"; | |
+ #else | |
+ tty->TS_set_foreground = "\033[3%dm"; | |
+ tty->TS_set_background = "\033[4%dm"; | |
+ tty->TS_set_rgb_foreground = "\033[38;2;%d;%d;%dm"; | |
+ tty->TS_set_rgb_background = "\033[48;2;%d;%d;%dm"; | |
+ #endif | |
+ tty->TN_max_colors = 16777216; | |
+ /*tty->TN_max_pairs = 64; TODO */ | |
+ tty->TN_no_color_video = 0; | |
+ break; | |
} | |
} | |
*************** | |
*** 3207,3212 **** | |
--- 3263,3298 ---- | |
tty->TN_no_color_video = tgetnum ("NC"); | |
if (tty->TN_no_color_video == -1) | |
tty->TN_no_color_video = 0; | |
+ | |
+ /* TODO Reliable way to detect: Konsole, iTerm2, st */ | |
+ if (getenv ("KONSOLE_DBUS_SESSION")) | |
+ { | |
+ /* TODO This should be extracted from terminfo/termcap. */ | |
+ #ifdef TERMINFO | |
+ tty->TS_set_rgb_foreground = "\033[38;2;%p1%d;%p2%d;%p3%dm"; | |
+ tty->TS_set_rgb_background = "\033[48;2;%p1%d;%p2%d;%p3%dm"; | |
+ #else | |
+ tty->TS_set_rgb_foreground = "\033[38;2;%d;%d;%dm"; | |
+ tty->TS_set_rgb_background = "\033[48;2;%d;%d;%dm"; | |
+ #endif | |
+ } | |
+ else if (getenv ("ITERM_24BIT")) | |
+ { | |
+ /* XXX chopps use ITU T.421 ':' separator */ | |
+ /* TODO This should be extracted from terminfo/termcap. */ | |
+ #ifdef TERMINFO | |
+ tty->TS_set_rgb_foreground = "\033[38:2:%p1%d:%p2%d:%p3%dm"; | |
+ tty->TS_set_rgb_background = "\033[48:2:%p1%d:%p2%d:%p3%dm"; | |
+ #else | |
+ tty->TS_set_rgb_foreground = "\033[38:2:%d:%d:%dm"; | |
+ tty->TS_set_rgb_background = "\033[48:2:%d:%d:%dm"; | |
+ #endif | |
+ } | |
+ else | |
+ { | |
+ tty->TS_set_rgb_foreground = NULL; | |
+ tty->TS_set_rgb_background = NULL; | |
+ } | |
} | |
tty_default_color_capabilities (tty, 1); | |
*** ./src/termchar.h.orig 2013-01-01 15:37:17.000000000 -0500 | |
--- ./src/termchar.h 2014-09-02 18:41:42.000000000 -0400 | |
*************** | |
*** 154,159 **** | |
--- 154,163 ---- | |
const char *TS_set_foreground; | |
const char *TS_set_background; | |
+ /* Support for 24bit RGB color terminals. */ | |
+ const char *TS_set_rgb_foreground; | |
+ const char *TS_set_rgb_background; | |
+ | |
int TF_hazeltine; /* termcap hz flag. */ | |
int TF_insmode_motion; /* termcap mi flag: can move while in insert mode. */ | |
int TF_standout_motion; /* termcap mi flag: can move while in standout mode. */ | |
*** ./src/xfaces.c.orig 2013-01-01 15:37:17.000000000 -0500 | |
--- ./src/xfaces.c 2014-09-02 19:26:32.000000000 -0400 | |
*************** | |
*** 400,406 **** | |
/* TTY color-related functions (defined in tty-colors.el). */ | |
! static Lisp_Object Qtty_color_desc, Qtty_color_by_index, Qtty_color_standard_values; | |
/* The name of the function used to compute colors on TTYs. */ | |
--- 400,406 ---- | |
/* TTY color-related functions (defined in tty-colors.el). */ | |
! static Lisp_Object Qtty_color_desc, Qtty_color_by_index, Qtty_color_standard_values, Qtty_color_canonicalize; | |
/* The name of the function used to compute colors on TTYs. */ | |
*************** | |
*** 998,1051 **** | |
if (!STRINGP (color) || NILP (Ffboundp (Qtty_color_desc))) | |
return 0; | |
! XSETFRAME (frame, f); | |
! color_desc = call2 (Qtty_color_desc, color, frame); | |
! if (CONSP (color_desc) && CONSP (XCDR (color_desc))) | |
{ | |
! Lisp_Object rgb; | |
! if (! INTEGERP (XCAR (XCDR (color_desc)))) | |
! return 0; | |
! tty_color->pixel = XINT (XCAR (XCDR (color_desc))); | |
! rgb = XCDR (XCDR (color_desc)); | |
! if (! parse_rgb_list (rgb, tty_color)) | |
! return 0; | |
! /* Should we fill in STD_COLOR too? */ | |
! if (std_color) | |
! { | |
! /* Default STD_COLOR to the same as TTY_COLOR. */ | |
! *std_color = *tty_color; | |
! /* Do a quick check to see if the returned descriptor is | |
! actually _exactly_ equal to COLOR, otherwise we have to | |
! lookup STD_COLOR separately. If it's impossible to lookup | |
! a standard color, we just give up and use TTY_COLOR. */ | |
! if ((!STRINGP (XCAR (color_desc)) | |
! || NILP (Fstring_equal (color, XCAR (color_desc)))) | |
! && !NILP (Ffboundp (Qtty_color_standard_values))) | |
! { | |
! /* Look up STD_COLOR separately. */ | |
! rgb = call1 (Qtty_color_standard_values, color); | |
! if (! parse_rgb_list (rgb, std_color)) | |
! return 0; | |
! } | |
! } | |
! return 1; | |
} | |
- else if (NILP (Fsymbol_value (intern ("tty-defined-color-alist")))) | |
- /* We were called early during startup, and the colors are not | |
- yet set up in tty-defined-color-alist. Don't return a failure | |
- indication, since this produces the annoying "Unable to | |
- load color" messages in the *Messages* buffer. */ | |
- return 1; | |
- else | |
- /* tty-color-desc seems to have returned a bad value. */ | |
- return 0; | |
} | |
/* A version of defined_color for non-X frames. */ | |
--- 998,1077 ---- | |
if (!STRINGP (color) || NILP (Ffboundp (Qtty_color_desc))) | |
return 0; | |
! if (f->output_method == output_termcap | |
! && f->output_data.tty->display_info->TS_set_rgb_foreground | |
! && !NILP (Ffboundp (Qtty_color_standard_values))) | |
! { | |
! /* Terminal supports 3 byte RGB colors. */ | |
! if (!NILP (Ffboundp (Qtty_color_canonicalize))) | |
! color = call1(Qtty_color_canonicalize, color); | |
! | |
! color_desc = call1 (Qtty_color_standard_values, color); | |
! if (! parse_rgb_list (color_desc, tty_color)) | |
! return 0; | |
! | |
! /* Map XColor to 3 byte values. */ | |
! tty_color->pixel = 1 << 24 /* Set bit 24 to mark RGB values. */ | |
! | (tty_color->red / 256) << 16 | |
! | (tty_color->green / 256) << 8 | |
! | (tty_color->blue / 256); | |
! | |
! if (std_color) | |
! *std_color = *tty_color; | |
! return 1; | |
! } | |
! else | |
{ | |
! XSETFRAME (frame, f); | |
! color_desc = call2 (Qtty_color_desc, color, frame); | |
! if (CONSP (color_desc) && CONSP (XCDR (color_desc))) | |
! { | |
! Lisp_Object rgb; | |
! if (! INTEGERP (XCAR (XCDR (color_desc)))) | |
! return 0; | |
! tty_color->pixel = XINT (XCAR (XCDR (color_desc))); | |
! rgb = XCDR (XCDR (color_desc)); | |
! if (! parse_rgb_list (rgb, tty_color)) | |
! return 0; | |
! /* Should we fill in STD_COLOR too? */ | |
! if (std_color) | |
! { | |
! /* Default STD_COLOR to the same as TTY_COLOR. */ | |
! *std_color = *tty_color; | |
! /* Do a quick check to see if the returned descriptor is | |
! actually _exactly_ equal to COLOR, otherwise we have to | |
! lookup STD_COLOR separately. If it's impossible to lookup | |
! a standard color, we just give up and use TTY_COLOR. */ | |
! if ((!STRINGP (XCAR (color_desc)) | |
! || NILP (Fstring_equal (color, XCAR (color_desc)))) | |
! && !NILP (Ffboundp (Qtty_color_standard_values))) | |
! { | |
! /* Look up STD_COLOR separately. */ | |
! rgb = call1 (Qtty_color_standard_values, color); | |
! if (! parse_rgb_list (rgb, std_color)) | |
! return 0; | |
! } | |
! } | |
! | |
! return 1; | |
! } | |
! else if (NILP (Fsymbol_value (intern ("tty-defined-color-alist")))) | |
! /* We were called early during startup, and the colors are not | |
! yet set up in tty-defined-color-alist. Don't return a failure | |
! indication, since this produces the annoying "Unable to | |
! load color" messages in the *Messages* buffer. */ | |
! return 1; | |
! else | |
! /* tty-color-desc seems to have returned a bad value. */ | |
! return 0; | |
} | |
} | |
/* A version of defined_color for non-X frames. */ | |
*************** | |
*** 5824,5829 **** | |
--- 5850,5856 ---- | |
unsigned long default_pixel = | |
foreground_p ? FACE_TTY_DEFAULT_FG_COLOR : FACE_TTY_DEFAULT_BG_COLOR; | |
unsigned long pixel = default_pixel; | |
+ XColor true_color; | |
#ifdef MSDOS | |
unsigned long default_other_pixel = | |
foreground_p ? FACE_TTY_DEFAULT_BG_COLOR : FACE_TTY_DEFAULT_FG_COLOR; | |
*************** | |
*** 5842,5848 **** | |
{ | |
/* Associations in tty-defined-color-alist are of the form | |
(NAME INDEX R G B). We need the INDEX part. */ | |
! pixel = XINT (XCAR (XCDR (def))); | |
} | |
if (pixel == default_pixel && STRINGP (color)) | |
--- 5869,5886 ---- | |
{ | |
/* Associations in tty-defined-color-alist are of the form | |
(NAME INDEX R G B). We need the INDEX part. */ | |
! if (f->output_method == output_termcap | |
! && f->output_data.tty->display_info->TS_set_rgb_foreground | |
! && parse_rgb_list (XCDR (XCDR(def)), &true_color)) | |
! { | |
! /* Map XColor to 3 byte values. */ | |
! pixel = 1 << 24 /* Set bit 24 to mark RGB values. */ | |
! | (true_color.red / 256) << 16 | |
! | (true_color.green / 256) << 8 | |
! | (true_color.blue / 256); | |
! } | |
! else | |
! pixel = XINT (XCAR (XCDR (def))); | |
} | |
if (pixel == default_pixel && STRINGP (color)) | |
*************** | |
*** 6555,6560 **** | |
--- 6593,6599 ---- | |
DEFSYM (Qmouse, "mouse"); | |
DEFSYM (Qmode_line_inactive, "mode-line-inactive"); | |
DEFSYM (Qvertical_border, "vertical-border"); | |
+ DEFSYM (Qtty_color_canonicalize, "tty-color-canonicalize"); | |
DEFSYM (Qtty_color_desc, "tty-color-desc"); | |
DEFSYM (Qtty_color_standard_values, "tty-color-standard-values"); | |
DEFSYM (Qtty_color_by_index, "tty-color-by-index"); |
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