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Support for RGB colour, using the extended cell mechanism to avoid

Browse Source 
wasting unnecessary space. The 'Tc' flag must be set in the external
TERM entry (using terminal-overrides or a custom terminfo entry), if not
tmux will map to the closest of the 256 or 16 colour palettes.

Mostly from Suraj N Kurapati, based on a diff originally by someone else.
This commit is contained in:
nicm 2016-01-29 11:13:56 +00:00
parent b5b5221c13
commit 427b820426
6 changed files with 209 additions and 55 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
grid.c
View File

@ -37,7 +37,7 @@
/* Default grid cell data. */
const struct grid_cell grid_default_cell = {
0, 0, 8, 8, { { ' ' }, 0, 1, 1 }
0, 0, { .fg = 8 }, { .bg = 8 }, { { ' ' }, 0, 1, 1 }
};
const struct grid_cell_entry grid_default_entry = {
0, { .data = { 0, 8, 8, ' ' } }
@ -284,6 +284,7 @@ grid_set_cell(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc)
struct grid_line *gl;
struct grid_cell_entry *gce;
struct grid_cell *gcp;
int extended;
if (grid_check_y(gd, py) != 0)
return;
@ -293,8 +294,12 @@ grid_set_cell(struct grid *gd, u_int px, u_int py, const struct grid_cell *gc)
gl = &gd->linedata[py];
gce = &gl->celldata[px];
if ((gce->flags & GRID_FLAG_EXTENDED) || gc->data.size != 1 ||
gc->data.width != 1) {
extended = (gce->flags & GRID_FLAG_EXTENDED);
if (!extended && (gc->data.size != 1 || gc->data.width != 1))
extended = 1;
if (!extended && (gc->flags & (GRID_FLAG_FGRGB|GRID_FLAG_BGRGB)))
extended = 1;
if (extended) {
if (~gce->flags & GRID_FLAG_EXTENDED) {
gl->extddata = xreallocarray(gl->extddata,
gl->extdsize + 1, sizeof *gl->extddata);

35
input.c
View File

@ -1629,18 +1629,20 @@ input_csi_dispatch_sgr_256(struct input_ctx *ictx, int fgbg, u_int *i)
c = input_get(ictx, *i, 0, -1);
if (c == -1) {
if (fgbg == 38) {
gc->flags &= ~GRID_FLAG_FG256;
gc->flags &= ~(GRID_FLAG_FG256|GRID_FLAG_FGRGB);
gc->fg = 8;
} else if (fgbg == 48) {
gc->flags &= ~GRID_FLAG_BG256;
gc->flags &= ~(GRID_FLAG_BG256|GRID_FLAG_BGRGB);
gc->bg = 8;
}
} else {
if (fgbg == 38) {
gc->flags |= GRID_FLAG_FG256;
gc->flags &= ~GRID_FLAG_FGRGB;
gc->fg = c;
} else if (fgbg == 48) {
gc->flags |= GRID_FLAG_BG256;
gc->flags &= ~GRID_FLAG_BGRGB;
gc->bg = c;
}
}
@ -1651,7 +1653,7 @@ void
input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i)
{
struct grid_cell *gc = &ictx->cell.cell;
int c, r, g, b;
int r, g, b;
(*i)++;
r = input_get(ictx, *i, 0, -1);
@ -1666,13 +1668,18 @@ input_csi_dispatch_sgr_rgb(struct input_ctx *ictx, int fgbg, u_int *i)
if (b == -1 || b > 255)
return;
c = colour_find_rgb(r, g, b);
if (fgbg == 38) {
gc->flags |= GRID_FLAG_FG256;
gc->fg = c;
gc->flags &= ~GRID_FLAG_FG256;
gc->flags |= GRID_FLAG_FGRGB;
gc->fg_rgb.r = r;
gc->fg_rgb.g = g;
gc->fg_rgb.b = b;
} else if (fgbg == 48) {
gc->flags |= GRID_FLAG_BG256;
gc->bg = c;
gc->flags &= ~GRID_FLAG_BG256;
gc->flags |= GRID_FLAG_BGRGB;
gc->bg_rgb.r = r;
gc->bg_rgb.g = g;
gc->bg_rgb.b = b;
}
}
@ -1754,11 +1761,11 @@ input_csi_dispatch_sgr(struct input_ctx *ictx)
case 35:
case 36:
case 37:
gc->flags &= ~GRID_FLAG_FG256;
gc->flags &= ~(GRID_FLAG_FG256|GRID_FLAG_FGRGB);
gc->fg = n - 30;
break;
case 39:
gc->flags &= ~GRID_FLAG_FG256;
gc->flags &= ~(GRID_FLAG_FG256|GRID_FLAG_FGRGB);
gc->fg = 8;
break;
case 40:
@ -1769,11 +1776,11 @@ input_csi_dispatch_sgr(struct input_ctx *ictx)
case 45:
case 46:
case 47:
gc->flags &= ~GRID_FLAG_BG256;
gc->flags &= ~(GRID_FLAG_BG256|GRID_FLAG_BGRGB);
gc->bg = n - 40;
break;
case 49:
gc->flags &= ~GRID_FLAG_BG256;
gc->flags &= ~(GRID_FLAG_BG256|GRID_FLAG_BGRGB);
gc->bg = 8;
break;
case 90:
@ -1784,7 +1791,7 @@ input_csi_dispatch_sgr(struct input_ctx *ictx)
case 95:
case 96:
case 97:
gc->flags &= ~GRID_FLAG_FG256;
gc->flags &= ~(GRID_FLAG_FG256|GRID_FLAG_FGRGB);
gc->fg = n;
break;
case 100:
@ -1795,7 +1802,7 @@ input_csi_dispatch_sgr(struct input_ctx *ictx)
case 105:
case 106:
case 107:
gc->flags &= ~GRID_FLAG_BG256;
gc->flags &= ~(GRID_FLAG_BG256|GRID_FLAG_BGRGB);
gc->bg = n - 10;
break;
}

12
tmux.1
View File

@ -2921,7 +2921,7 @@ and poor for interactive programs such as shells.
.Op Ic on | off
.Xc
Allow programs to change the window name using a terminal escape
sequence (\\033k...\\033\\\\).
sequence (\eek...\ee\e\e).
The default is on.
.Pp
.It Xo Ic alternate-screen
@ -4024,7 +4024,7 @@ This command only works from outside
.El
.Sh TERMINFO EXTENSIONS
.Nm
understands some extensions to
understands some unofficial extensions to
.Xr terminfo 5 :
.Bl -tag -width Ds
.It Em Cs , Cr
@ -4048,10 +4048,12 @@ $ printf '\e033[4 q'
If
.Em Se
is not set, \&Ss with argument 0 will be used to reset the cursor style instead.
.It Em \&Tc
Indicate that the terminal supports the
.Ql direct colour
RGB escape sequence (for example, \ee[38;2;255;255;255m).
.It Em \&Ms
This sequence can be used by
.Nm
to store the current buffer in the host terminal's selection (clipboard).
Store the current buffer in the host terminal's selection (clipboard).
See the
.Em set-clipboard
option above and the

20
tmux.h
View File

@ -385,6 +385,7 @@ enum tty_code_code {
TTYC_SMSO, /* enter_standout_mode, so */
TTYC_SMUL, /* enter_underline_mode, us */
TTYC_SS, /* set cursor style, Ss */
TTYC_TC, /* 24-bit "true" colour, Tc */
TTYC_TSL, /* to_status_line, tsl */
TTYC_VPA, /* row_address, cv */
TTYC_XENL, /* eat_newline_glitch, xn */
@ -641,16 +642,31 @@ enum utf8_state {
#define GRID_FLAG_BG256 0x2
#define GRID_FLAG_PADDING 0x4
#define GRID_FLAG_EXTENDED 0x8
#define GRID_FLAG_FGRGB 0x10
#define GRID_FLAG_BGRGB 0x20
/* Grid line flags. */
#define GRID_LINE_WRAPPED 0x1
/* Grid cell RGB colours. */
struct grid_cell_rgb {
u_char r;
u_char g;
u_char b;
};
/* Grid cell data. */
struct grid_cell {
u_char flags;
u_char attr;
u_char fg;
u_char bg;
union {
u_char fg;
struct grid_cell_rgb fg_rgb;
};
union {
u_char bg;
struct grid_cell_rgb bg_rgb;
};
struct utf8_data data;
};

1
tty-term.c
View File

@ -251,6 +251,7 @@ const struct tty_term_code_entry tty_term_codes[] = {
[TTYC_SMSO] = { TTYCODE_STRING, "smso" },
[TTYC_SMUL] = { TTYCODE_STRING, "smul" },
[TTYC_SS] = { TTYCODE_STRING, "Ss" },
[TTYC_TC] = { TTYCODE_FLAG, "Tc" },
[TTYC_TSL] = { TTYCODE_STRING, "tsl" },
[TTYC_VPA] = { TTYCODE_STRING, "vpa" },
[TTYC_XENL] = { TTYCODE_FLAG, "xenl" },

185
tty.c
View File

@ -36,8 +36,15 @@ static int tty_log_fd = -1;
void tty_read_callback(struct bufferevent *, void *);
void tty_error_callback(struct bufferevent *, short, void *);
static int tty_same_fg(const struct grid_cell *, const struct grid_cell *);
static int tty_same_bg(const struct grid_cell *, const struct grid_cell *);
static int tty_same_colours(const struct grid_cell *, const struct grid_cell *);
static int tty_is_fg(const struct grid_cell *, int);
static int tty_is_bg(const struct grid_cell *, int);
void tty_set_italics(struct tty *);
int tty_try_256(struct tty *, u_char, const char *);
int tty_try_rgb(struct tty *, const struct grid_cell_rgb *, const char *);
void tty_colours(struct tty *, const struct grid_cell *);
void tty_check_fg(struct tty *, struct grid_cell *);
@ -61,6 +68,74 @@ void tty_default_colours(struct grid_cell *, const struct window_pane *);
#define tty_pane_full_width(tty, ctx) \
((ctx)->xoff == 0 && screen_size_x((ctx)->wp->screen) >= (tty)->sx)
static int
tty_same_fg(const struct grid_cell *gc1, const struct grid_cell *gc2)
{
int flags1, flags2;
flags1 = (gc1->flags & (GRID_FLAG_FG256|GRID_FLAG_FGRGB));
flags2 = (gc2->flags & (GRID_FLAG_FG256|GRID_FLAG_FGRGB));
if (flags1 != flags2)
return (0);
if (flags1 & GRID_FLAG_FGRGB) {
if (gc1->fg_rgb.r != gc2->fg_rgb.r)
return (0);
if (gc1->fg_rgb.g != gc2->fg_rgb.g)
return (0);
if (gc1->fg_rgb.b != gc2->fg_rgb.b)
return (0);
return (1);
}
return (gc1->fg == gc2->fg);
}
static int
tty_same_bg(const struct grid_cell *gc1, const struct grid_cell *gc2)
{
int flags1, flags2;
flags1 = (gc1->flags & (GRID_FLAG_BG256|GRID_FLAG_BGRGB));
flags2 = (gc2->flags & (GRID_FLAG_BG256|GRID_FLAG_BGRGB));
if (flags1 != flags2)
return (0);
if (flags1 & GRID_FLAG_BGRGB) {
if (gc1->bg_rgb.r != gc2->bg_rgb.r)
return (0);
if (gc1->bg_rgb.g != gc2->bg_rgb.g)
return (0);
if (gc1->bg_rgb.b != gc2->bg_rgb.b)
return (0);
return (1);
}
return (gc1->bg == gc2->bg);
}
static int
tty_same_colours(const struct grid_cell *gc1, const struct grid_cell *gc2)
{
return (tty_same_fg(gc1, gc2) && tty_same_bg(gc1, gc2));
}
static int
tty_is_fg(const struct grid_cell *gc, int c)
{
if (gc->flags & (GRID_FLAG_FG256|GRID_FLAG_FGRGB))
return (0);
return (gc->fg == c);
}
static int
tty_is_bg(const struct grid_cell *gc, int c)
{
if (gc->flags & (GRID_FLAG_BG256|GRID_FLAG_BGRGB))
return (0);
return (gc->bg == c);
}
void
tty_create_log(void)
{
@ -1423,12 +1498,10 @@ void
tty_colours(struct tty *tty, const struct grid_cell *gc)
{
struct grid_cell *tc = &tty->cell;
u_char fg = gc->fg, bg = gc->bg, flags = gc->flags;
int have_ax, fg_default, bg_default;
/* No changes? Nothing is necessary. */
if (fg == tc->fg && bg == tc->bg &&
((flags ^ tc->flags) & (GRID_FLAG_FG256|GRID_FLAG_BG256)) == 0)
if (tty_same_colours(gc, tc))
return;
/*
@ -1437,8 +1510,8 @@ tty_colours(struct tty *tty, const struct grid_cell *gc)
* case if only one is default need to fall onward to set the other
* colour.
*/
fg_default = (fg == 8 && !(flags & GRID_FLAG_FG256));
bg_default = (bg == 8 && !(flags & GRID_FLAG_BG256));
fg_default = tty_is_fg(gc, 8);
bg_default = tty_is_bg(gc, 8);
if (fg_default || bg_default) {
/*
* If don't have AX but do have op, send sgr0 (op can't
@ -1451,48 +1524,52 @@ tty_colours(struct tty *tty, const struct grid_cell *gc)
if (!have_ax && tty_term_has(tty->term, TTYC_OP))
tty_reset(tty);
else {
if (fg_default &&
(tc->fg != 8 || tc->flags & GRID_FLAG_FG256)) {
if (fg_default && !tty_is_fg(tc, 8)) {
if (have_ax)
tty_puts(tty, "\033[39m");
else if (tc->fg != 7 ||
tc->flags & GRID_FLAG_FG256)
else if (!tty_is_fg(tc, 7))
tty_putcode1(tty, TTYC_SETAF, 7);
tc->fg = 8;
tc->flags &= ~GRID_FLAG_FG256;
tc->flags &= ~(GRID_FLAG_FG256|GRID_FLAG_FGRGB);
}
if (bg_default &&
(tc->bg != 8 || tc->flags & GRID_FLAG_BG256)) {
if (bg_default && !tty_is_bg(tc, 8)) {
if (have_ax)
tty_puts(tty, "\033[49m");
else if (tc->bg != 0 ||
tc->flags & GRID_FLAG_BG256)
else if (!tty_is_bg(tc, 0))
tty_putcode1(tty, TTYC_SETAB, 0);
tc->bg = 8;
tc->flags &= ~GRID_FLAG_BG256;
tc->flags &= ~(GRID_FLAG_BG256|GRID_FLAG_BGRGB);
}
}
}
/* Set the foreground colour. */
if (!fg_default && (fg != tc->fg ||
((flags & GRID_FLAG_FG256) != (tc->flags & GRID_FLAG_FG256))))
if (!fg_default && !tty_same_fg(gc, tc))
tty_colours_fg(tty, gc);
/*
* Set the background colour. This must come after the foreground as
* tty_colour_fg() can call tty_reset().
*/
if (!bg_default && (bg != tc->bg ||
((flags & GRID_FLAG_BG256) != (tc->flags & GRID_FLAG_BG256))))
if (!bg_default && !tty_same_bg(gc, tc))
tty_colours_bg(tty, gc);
}
void
tty_check_fg(struct tty *tty, struct grid_cell *gc)
{
u_int colours;
struct grid_cell_rgb *rgb = &gc->fg_rgb;
u_int colours;
/* Is this a 24-bit colour? */
if (gc->flags & GRID_FLAG_FGRGB) {
/* Not a 24-bit terminal? Translate to 256-colour palette. */
if (!tty_term_flag(tty->term, TTYC_TC)) {
gc->flags &= ~GRID_FLAG_FGRGB;
gc->flags |= GRID_FLAG_FG256;
gc->fg = colour_find_rgb(rgb->r, rgb->g, rgb->b);
}
}
colours = tty_term_number(tty->term, TTYC_COLORS);
/* Is this a 256-colour colour? */
@ -1524,8 +1601,18 @@ tty_check_fg(struct tty *tty, struct grid_cell *gc)
void
tty_check_bg(struct tty *tty, struct grid_cell *gc)
{
u_int colours;
struct grid_cell_rgb *rgb = &gc->bg_rgb;
u_int colours;
/* Is this a 24-bit colour? */
if (gc->flags & GRID_FLAG_BGRGB) {
/* Not a 24-bit terminal? Translate to 256-colour palette. */
if (!tty_term_flag(tty->term, TTYC_TC)) {
gc->flags &= ~GRID_FLAG_BGRGB;
gc->flags |= GRID_FLAG_BG256;
gc->bg = colour_find_rgb(rgb->r, rgb->g, rgb->b);
}
}
colours = tty_term_number(tty->term, TTYC_COLORS);
/* Is this a 256-colour colour? */
@ -1560,12 +1647,21 @@ tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
u_char fg = gc->fg;
char s[32];
tc->flags &= ~(GRID_FLAG_FG256|GRID_FLAG_FGRGB);
/* Is this a 24-bit colour? */
if (gc->flags & GRID_FLAG_FGRGB) {
if (tty_try_rgb(tty, &gc->fg_rgb, "38") == 0)
goto save_fg;
/* Should not get here, already converted in tty_check_fg. */
return;
}
/* Is this a 256-colour colour? */
if (gc->flags & GRID_FLAG_FG256) {
/* Try as 256 colours. */
if (tty_try_256(tty, fg, "38") == 0)
goto save_fg;
/* Else already handled by tty_check_fg. */
/* Should not get here, already converted in tty_check_fg. */
return;
}
@ -1581,9 +1677,12 @@ tty_colours_fg(struct tty *tty, const struct grid_cell *gc)
save_fg:
/* Save the new values in the terminal current cell. */
tc->fg = fg;
tc->flags &= ~GRID_FLAG_FG256;
tc->flags |= gc->flags & GRID_FLAG_FG256;
if (gc->flags & GRID_FLAG_FGRGB)
memcpy(&tc->fg_rgb, &gc->fg_rgb, sizeof tc->fg_rgb);
else
tc->fg = fg;
tc->flags &= ~(GRID_FLAG_FGRGB|GRID_FLAG_FG256);
tc->flags |= (gc->flags & (GRID_FLAG_FG256|GRID_FLAG_FGRGB));
}
void
@ -1593,12 +1692,19 @@ tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
u_char bg = gc->bg;
char s[32];
/* Is this a 24-bit colour? */
if (gc->flags & GRID_FLAG_BGRGB) {
if (tty_try_rgb(tty, &gc->bg_rgb, "48") == 0)
goto save_bg;
/* Should not get here, already converted in tty_check_bg. */
return;
}
/* Is this a 256-colour colour? */
if (gc->flags & GRID_FLAG_BG256) {
/* Try as 256 colours. */
if (tty_try_256(tty, bg, "48") == 0)
goto save_bg;
/* Else already handled by tty_check_bg. */
/* Should not get here, already converted in tty_check_bg. */
return;
}
@ -1614,9 +1720,12 @@ tty_colours_bg(struct tty *tty, const struct grid_cell *gc)
save_bg:
/* Save the new values in the terminal current cell. */
tc->bg = bg;
tc->flags &= ~GRID_FLAG_BG256;
tc->flags |= gc->flags & GRID_FLAG_BG256;
if (gc->flags & GRID_FLAG_BGRGB)
memcpy(&tc->bg_rgb, &gc->bg_rgb, sizeof tc->bg_rgb);
else
tc->bg = bg;
tc->flags &= ~(GRID_FLAG_BGRGB|GRID_FLAG_BG256);
tc->flags |= (gc->flags & (GRID_FLAG_BG256|GRID_FLAG_BGRGB));
}
int
@ -1656,6 +1765,20 @@ fallback:
return (0);
}
int
tty_try_rgb(struct tty *tty, const struct grid_cell_rgb *rgb, const char *type)
{
char s[32];
if (!tty_term_flag(tty->term, TTYC_TC))
return (-1);
xsnprintf(s, sizeof s, "\033[%s;2;%hhu;%hhu;%hhum", type, rgb->r,
rgb->g, rgb->b);
tty_puts(tty, s);
return (0);
}
void
tty_default_colours(struct grid_cell *gc, const struct window_pane *wp)
{