Merge branch 'obsd-master'

cmd-break-pane.c

@@ -99,7 +99,7 @@ cmd_break_pane_exec(struct cmd *self, struct cmdq_item *item)
 
 	w = wp->window = window_create(w->sx, w->sy, w->xpixel, w->ypixel);
 	options_set_parent(wp->options, w->options);
-	wp->flags |= PANE_STYLECHANGED;
+	wp->flags |= (PANE_STYLECHANGED|PANE_THEMECHANGED);
 	TAILQ_INSERT_HEAD(&w->panes, wp, entry);
 	w->active = wp;
 	w->latest = tc;

cmd-join-pane.c

@@ -149,7 +149,7 @@ cmd_join_pane_exec(struct cmd *self, struct cmdq_item *item)
 
 	src_wp->window = dst_w;
 	options_set_parent(src_wp->options, dst_w->options);
-	src_wp->flags |= PANE_STYLECHANGED;
+	src_wp->flags |= (PANE_STYLECHANGED|PANE_THEMECHANGED);
 	if (flags & SPAWN_BEFORE)
 		TAILQ_INSERT_BEFORE(dst_wp, src_wp, entry);
 	else

cmd-select-pane.c

@@ -149,12 +149,14 @@ cmd_select_pane_exec(struct cmd *self, struct cmdq_item *item)
 		markedwp = marked_pane.wp;
 
 		if (lastwp != NULL) {
-			lastwp->flags |= (PANE_REDRAW|PANE_STYLECHANGED);
+			lastwp->flags |= (PANE_REDRAW|PANE_STYLECHANGED|
+			    PANE_THEMECHANGED);
 			server_redraw_window_borders(lastwp->window);
 			server_status_window(lastwp->window);
 		}
 		if (markedwp != NULL) {
-			markedwp->flags |= (PANE_REDRAW|PANE_STYLECHANGED);
+			markedwp->flags |= (PANE_REDRAW|PANE_STYLECHANGED|
+			    PANE_THEMECHANGED);
 			server_redraw_window_borders(markedwp->window);
 			server_status_window(markedwp->window);
 		}
@@ -169,7 +171,7 @@ cmd_select_pane_exec(struct cmd *self, struct cmdq_item *item)
 			return (CMD_RETURN_ERROR);
 		}
 		options_set_string(oo, "window-active-style", 0, "%s", style);
-		wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED);
+		wp->flags |= (PANE_REDRAW|PANE_STYLECHANGED|PANE_THEMECHANGED);
 	}
 	if (args_has(args, 'g')) {
 		cmdq_print(item, "%s", options_get_string(oo, "window-style"));

cmd-send-keys.c

@@ -217,7 +217,7 @@ cmd_send_keys_exec(struct cmd *self, struct cmdq_item *item)
 	if (args_has(args, 'R')) {
 		colour_palette_clear(&wp->palette);
 		input_reset(wp->ictx, 1);
-		wp->flags |= (PANE_STYLECHANGED|PANE_REDRAW);
+		wp->flags |= (PANE_STYLECHANGED|PANE_THEMECHANGED|PANE_REDRAW);
 	}
 
 	if (count == 0) {

cmd-swap-pane.c

@@ -101,10 +101,10 @@ cmd_swap_pane_exec(struct cmd *self, struct cmdq_item *item)
 
 	src_wp->window = dst_w;
 	options_set_parent(src_wp->options, dst_w->options);
-	src_wp->flags |= PANE_STYLECHANGED;
+	src_wp->flags |= (PANE_STYLECHANGED|PANE_THEMECHANGED);
 	dst_wp->window = src_w;
 	options_set_parent(dst_wp->options, src_w->options);
-	dst_wp->flags |= PANE_STYLECHANGED;
+	dst_wp->flags |= (PANE_STYLECHANGED|PANE_THEMECHANGED);
 
 	sx = src_wp->sx; sy = src_wp->sy;
 	xoff = src_wp->xoff; yoff = src_wp->yoff;

colour.c

@@ -182,6 +182,46 @@ colour_tostring(int c)
 	return ("invalid");
 }
 
+/* Convert background colour to theme. */
+enum client_theme
+colour_totheme(int c)
+{
+	int	r, g, b, brightness;
+
+	if (c == -1)
+		return (THEME_UNKNOWN);
+
+	if (c & COLOUR_FLAG_RGB) {
+		r = (c >> 16) & 0xff;
+		g = (c >> 8) & 0xff;
+		b = (c >> 0) & 0xff;
+
+		brightness = r + g + b;
+		if (brightness > 382)
+			return (THEME_LIGHT);
+		return (THEME_DARK);
+	}
+
+	if (c & COLOUR_FLAG_256)
+		return (colour_totheme(colour_256toRGB(c)));
+
+	switch (c) {
+	case 0:
+	case 90:
+		return (THEME_DARK);
+	case 7:
+	case 97:
+		return (THEME_LIGHT);
+	default:
+		if (c >= 0 && c <= 7)
+			return (colour_totheme(colour_256toRGB(c)));
+		if (c >= 90 && c <= 97)
+			return (colour_totheme(colour_256toRGB(8 + c - 90)));
+		break;
+	}
+	return (THEME_UNKNOWN);
+}
+
 /* Convert colour from string. */
 int
 colour_fromstring(const char *s)

format.c

@@ -1544,6 +1544,23 @@ format_cb_client_written(struct format_tree *ft)
 	return (NULL);
 }
 
+/* Callback for client_theme. */
+static void *
+format_cb_client_theme(struct format_tree *ft)
+{
+	if (ft->c != NULL) {
+		switch (ft->c->theme) {
+		case THEME_DARK:
+			return (xstrdup("dark"));
+		case THEME_LIGHT:
+			return (xstrdup("light"));
+		case THEME_UNKNOWN:
+			return (NULL);
+		}
+	}
+	return (NULL);
+}
+
 /* Callback for config_files. */
 static void *
 format_cb_config_files(__unused struct format_tree *ft)
@@ -2881,6 +2898,9 @@ static const struct format_table_entry format_table[] = {
 	{ "client_termtype", FORMAT_TABLE_STRING,
 	  format_cb_client_termtype
 	},
+	{ "client_theme", FORMAT_TABLE_STRING,
+	  format_cb_client_theme
+	},
 	{ "client_tty", FORMAT_TABLE_STRING,
 	  format_cb_client_tty
 	},

input-keys.c

@@ -313,6 +313,12 @@ static struct input_key_entry input_key_defaults[] = {
 	{ .key = KEYC_DC|KEYC_BUILD_MODIFIERS,
 	  .data = "\033[3;_~"
 	},
+	{ .key = KEYC_REPORT_DARK_THEME,
+	  .data = "\033[?997;1n"
+	},
+	{ .key = KEYC_REPORT_LIGHT_THEME,
+	  .data = "\033[?997;2n"
+	},
 };
 static const key_code input_key_modifiers[] = {
 	0,

input.c

@@ -133,7 +133,7 @@ static void printflike(2, 3) input_reply(struct input_ctx *, const char *, ...);
 static void	input_set_state(struct input_ctx *,
 		    const struct input_transition *);
 static void	input_reset_cell(struct input_ctx *);
-
+static void	input_report_current_theme(struct input_ctx *);
 static void	input_osc_4(struct input_ctx *, const char *);
 static void	input_osc_8(struct input_ctx *, const char *);
 static void	input_osc_10(struct input_ctx *, const char *);
@@ -243,6 +243,7 @@ enum input_csi_type {
 	INPUT_CSI_DECSTBM,
 	INPUT_CSI_DL,
 	INPUT_CSI_DSR,
+	INPUT_CSI_DSR_PRIVATE,
 	INPUT_CSI_ECH,
 	INPUT_CSI_ED,
 	INPUT_CSI_EL,
@@ -251,6 +252,7 @@ enum input_csi_type {
 	INPUT_CSI_IL,
 	INPUT_CSI_MODOFF,
 	INPUT_CSI_MODSET,
+	INPUT_CSI_QUERY_PRIVATE,
 	INPUT_CSI_RCP,
 	INPUT_CSI_REP,
 	INPUT_CSI_RM,
@@ -259,8 +261,8 @@ enum input_csi_type {
 	INPUT_CSI_SD,
 	INPUT_CSI_SGR,
 	INPUT_CSI_SM,
-	INPUT_CSI_SM_PRIVATE,
 	INPUT_CSI_SM_GRAPHICS,
+	INPUT_CSI_SM_PRIVATE,
 	INPUT_CSI_SU,
 	INPUT_CSI_TBC,
 	INPUT_CSI_VPA,
@@ -304,6 +306,8 @@ static const struct input_table_entry input_csi_table[] = {
 	{ 'm', ">", INPUT_CSI_MODSET },
 	{ 'n', "",  INPUT_CSI_DSR },
 	{ 'n', ">", INPUT_CSI_MODOFF },
+	{ 'n', "?", INPUT_CSI_DSR_PRIVATE },
+	{ 'p', "?$", INPUT_CSI_QUERY_PRIVATE },
 	{ 'q', " ", INPUT_CSI_DECSCUSR },
 	{ 'q', ">", INPUT_CSI_XDA },
 	{ 'r', "",  INPUT_CSI_DECSTBM },
@@ -1531,6 +1535,20 @@ input_csi_dispatch(struct input_ctx *ictx)
 		if (n != -1)
 			screen_write_deleteline(sctx, n, bg);
 		break;
+	case INPUT_CSI_DSR_PRIVATE:
+		switch (input_get(ictx, 0, 0, 0)) {
+		case 996:
+			input_report_current_theme(ictx);
+			break;
+		}
+		break;
+	case INPUT_CSI_QUERY_PRIVATE:
+		switch (input_get(ictx, 0, 0, 0)) {
+		case 2031:
+			input_reply(ictx, "\033[?2031;2$y");
+			break;
+		}
+		break;
 	case INPUT_CSI_DSR:
 		switch (input_get(ictx, 0, 0, 0)) {
 		case -1:
@@ -1781,6 +1799,9 @@ input_csi_dispatch_rm_private(struct input_ctx *ictx)
 		case 2004:
 			screen_write_mode_clear(sctx, MODE_BRACKETPASTE);
 			break;
+		case 2031:
+			screen_write_mode_clear(sctx, MODE_THEME_UPDATES);
+			break;
 		default:
 			log_debug("%s: unknown '%c'", __func__, ictx->ch);
 			break;
@@ -1876,6 +1897,9 @@ input_csi_dispatch_sm_private(struct input_ctx *ictx)
 		case 2004:
 			screen_write_mode_set(sctx, MODE_BRACKETPASTE);
 			break;
+		case 2031:
+			screen_write_mode_set(sctx, MODE_THEME_UPDATES);
+			break;
 		default:
 			log_debug("%s: unknown '%c'", __func__, ictx->ch);
 			break;
@@ -2697,84 +2721,6 @@ bad:
 	free(id);
 }
 
-/*
- * Get a client with a foreground for the pane. There isn't much to choose
- * between them so just use the first.
- */
-static int
-input_get_fg_client(struct window_pane *wp)
-{
-	struct window	*w = wp->window;
-	struct client	*loop;
-
-	TAILQ_FOREACH(loop, &clients, entry) {
-		if (loop->flags & CLIENT_UNATTACHEDFLAGS)
-			continue;
-		if (loop->session == NULL || !session_has(loop->session, w))
-			continue;
-		if (loop->tty.fg == -1)
-			continue;
-		return (loop->tty.fg);
-	}
-	return (-1);
-}
-
-/* Get a client with a background for the pane. */
-static int
-input_get_bg_client(struct window_pane *wp)
-{
-	struct window	*w = wp->window;
-	struct client	*loop;
-
-	TAILQ_FOREACH(loop, &clients, entry) {
-		if (loop->flags & CLIENT_UNATTACHEDFLAGS)
-			continue;
-		if (loop->session == NULL || !session_has(loop->session, w))
-			continue;
-		if (loop->tty.bg == -1)
-			continue;
-		return (loop->tty.bg);
-	}
-	return (-1);
-}
-
-/*
- * If any control mode client exists that has provided a bg color, return it.
- * Otherwise, return -1.
- */
-static int
-input_get_bg_control_client(struct window_pane *wp)
-{
-	struct client	*c;
-
-	if (wp->control_bg == -1)
-		return (-1);
-
-	TAILQ_FOREACH(c, &clients, entry) {
-		if (c->flags & CLIENT_CONTROL)
-			return (wp->control_bg);
-	}
-	return (-1);
-}
-
-/*
- * If any control mode client exists that has provided a fg color, return it.
- * Otherwise, return -1.
- */
-static int
-input_get_fg_control_client(struct window_pane *wp)
-{
-	struct client	*c;
-
-	if (wp->control_fg == -1)
-		return (-1);
-
-	TAILQ_FOREACH(c, &clients, entry) {
-		if (c->flags & CLIENT_CONTROL)
-			return (wp->control_fg);
-	}
-	return (-1);
-}
 
 /* Handle the OSC 10 sequence for setting and querying foreground colour. */
 static void
@@ -2787,11 +2733,11 @@ input_osc_10(struct input_ctx *ictx, const char *p)
 	if (strcmp(p, "?") == 0) {
 		if (wp == NULL)
 			return;
-		c = input_get_fg_control_client(wp);
+		c = window_pane_get_fg_control_client(wp);
 		if (c == -1) {
 			tty_default_colours(&defaults, wp);
 			if (COLOUR_DEFAULT(defaults.fg))
-				c = input_get_fg_client(wp);
+				c = window_pane_get_fg(wp);
 			else
 				c = defaults.fg;
 		}
@@ -2832,20 +2778,12 @@ static void
 input_osc_11(struct input_ctx *ictx, const char *p)
 {
 	struct window_pane	*wp = ictx->wp;
-	struct grid_cell	 defaults;
 	int			 c;
 
 	if (strcmp(p, "?") == 0) {
 		if (wp == NULL)
 			return;
-		c = input_get_bg_control_client(wp);
+		c = window_pane_get_bg(wp);
-		if (c == -1) {
-			tty_default_colours(&defaults, wp);
-			if (COLOUR_DEFAULT(defaults.bg))
-				c = input_get_bg_client(wp);
-			else
-				c = defaults.bg;
-		}
 		input_osc_colour_reply(ictx, 11, c);
 		return;
 	}
@@ -2857,7 +2795,7 @@ input_osc_11(struct input_ctx *ictx, const char *p)
 	if (ictx->palette != NULL) {
 		ictx->palette->bg = c;
 		if (wp != NULL)
-			wp->flags |= PANE_STYLECHANGED;
+			wp->flags |= (PANE_STYLECHANGED|PANE_THEMECHANGED);
 		screen_write_fullredraw(&ictx->ctx);
 	}
 }
@@ -2873,7 +2811,7 @@ input_osc_111(struct input_ctx *ictx, const char *p)
 	if (ictx->palette != NULL) {
 		ictx->palette->bg = 8;
 		if (wp != NULL)
-			wp->flags |= PANE_STYLECHANGED;
+			wp->flags |= (PANE_STYLECHANGED|PANE_THEMECHANGED);
 		screen_write_fullredraw(&ictx->ctx);
 	}
 }
@@ -3064,3 +3002,18 @@ input_set_buffer_size(size_t buffer_size)
 	log_debug("%s: %lu -> %lu", __func__, input_buffer_size, buffer_size);
 	input_buffer_size = buffer_size;
 }
+
+static void
+input_report_current_theme(struct input_ctx *ictx)
+{
+	switch (window_pane_get_theme(ictx->wp)) {
+		case THEME_DARK:
+			input_reply(ictx, "\033[?997;1n");
+			break;
+		case THEME_LIGHT:
+			input_reply(ictx, "\033[?997;2n");
+			break;
+		case THEME_UNKNOWN:
+			break;
+	}
+}

options-table.c

@@ -1454,6 +1454,8 @@ const struct options_table_entry options_table[] = {
 	OPTIONS_TABLE_HOOK("client-focus-out", ""),
 	OPTIONS_TABLE_HOOK("client-resized", ""),
 	OPTIONS_TABLE_HOOK("client-session-changed", ""),
+	OPTIONS_TABLE_HOOK("client-light-theme", ""),
+	OPTIONS_TABLE_HOOK("client-dark-theme", ""),
 	OPTIONS_TABLE_HOOK("command-error", ""),
 	OPTIONS_TABLE_PANE_HOOK("pane-died", ""),
 	OPTIONS_TABLE_PANE_HOOK("pane-exited", ""),

options.c

@@ -1165,7 +1165,7 @@ options_push_changes(const char *name)
 	if (strcmp(name, "window-style") == 0 ||
 	    strcmp(name, "window-active-style") == 0) {
 		RB_FOREACH(wp, window_pane_tree, &all_window_panes)
-			wp->flags |= PANE_STYLECHANGED;
+			wp->flags |= (PANE_STYLECHANGED|PANE_THEMECHANGED);
 	}
 	if (strcmp(name, "pane-colours") == 0) {
 		RB_FOREACH(wp, window_pane_tree, &all_window_panes)

server-client.c

@@ -56,11 +56,11 @@ static void	server_client_set_title(struct client *);
 static void	server_client_set_path(struct client *);
 static void	server_client_reset_state(struct client *);
 static void	server_client_update_latest(struct client *);
-
 static void	server_client_dispatch(struct imsg *, void *);
 static void	server_client_dispatch_command(struct client *, struct imsg *);
 static void	server_client_dispatch_identify(struct client *, struct imsg *);
 static void	server_client_dispatch_shell(struct client *);
+static void	server_client_report_theme(struct client *, enum client_theme);
 
 /* Compare client windows. */
 static int
@@ -300,6 +300,7 @@ server_client_create(int fd)
 
 	c->tty.sx = 80;
 	c->tty.sy = 24;
+	c->theme = THEME_UNKNOWN;
 
 	status_init(c);
 	c->flags |= CLIENT_FOCUSED;
@@ -401,6 +402,7 @@ server_client_set_session(struct client *c, struct session *s)
 		recalculate_sizes();
 		window_update_focus(s->curw->window);
 		session_update_activity(s, NULL);
+		session_theme_changed(s);
 		gettimeofday(&s->last_attached_time, NULL);
 		s->curw->flags &= ~WINLINK_ALERTFLAGS;
 		s->curw->window->latest = c;
@@ -2384,6 +2386,16 @@ server_client_key_callback(struct cmdq_item *item, void *data)
 		event->key = key;
 	}
 
+	/* Handle theme reporting keys. */
+	if (key == KEYC_REPORT_LIGHT_THEME) {
+		server_client_report_theme(c, THEME_LIGHT);
+		goto out;
+	}
+	if (key == KEYC_REPORT_DARK_THEME) {
+		server_client_report_theme(c, THEME_DARK);
+		goto out;
+	}
+
 	/* Find affected pane. */
 	if (!KEYC_IS_MOUSE(key) || cmd_find_from_mouse(&fs, m, 0) != 0)
 		cmd_find_from_client(&fs, c, 0);
@@ -2674,6 +2686,12 @@ server_client_loop(void)
 		}
 		check_window_name(w);
 	}
+
+	/* Send theme updates. */
+	RB_FOREACH(w, windows, &windows) {
+		TAILQ_FOREACH(wp, &w->panes, entry)
+			window_pane_send_theme_update(wp);
+	}
 }
 
 /* Check if window needs to be resized. */
@@ -3910,3 +3928,21 @@ out:
 	if (!parse)
 		free(msg);
 }
+
+static void
+server_client_report_theme(struct client *c, enum client_theme theme)
+{
+	if (theme == THEME_LIGHT) {
+		c->theme = THEME_LIGHT;
+		notify_client("client-light-theme", c);
+	} else {
+		c->theme = THEME_DARK;
+		notify_client("client-dark-theme", c);
+	}
+
+	/*
+	 * Request foreground and background colour again. Don't forward 2031 to
+	 * panes until a response is received.
+	 */
+	tty_puts(&c->tty, "\033]10;?\033\\\033]11;?\033\\");
+}

session.c

@@ -751,3 +751,16 @@ session_renumber_windows(struct session *s)
 	RB_FOREACH_SAFE(wl, winlinks, &old_wins, wl1)
 		winlink_remove(&old_wins, wl);
 }
+
+/* Set the PANE_THEMECHANGED flag for every pane in this session. */
+void
+session_theme_changed(struct session *s)
+{
+	struct window_pane	*wp;
+	struct winlink		*wl;
+
+	RB_FOREACH(wl, winlinks, &s->windows) {
+		TAILQ_FOREACH(wp, &wl->window->panes, entry)
+			wp->flags |= PANE_THEMECHANGED;
+	}
+}

tmux.h

@@ -378,6 +378,10 @@ enum {
 	KEYC_KP_ZERO,
 	KEYC_KP_PERIOD,
 
+	/* Theme reporting. */
+	KEYC_REPORT_DARK_THEME,
+	KEYC_REPORT_LIGHT_THEME,
+
 	/* End of special keys. */
 	KEYC_BASE_END
 };
@@ -645,6 +649,7 @@ enum tty_code_code {
 #define MODE_CURSOR_VERY_VISIBLE 0x10000
 #define MODE_CURSOR_BLINKING_SET 0x20000
 #define MODE_KEYS_EXTENDED_2 0x40000
+#define MODE_THEME_UPDATES 0x80000
 
 #define ALL_MODES 0xffffff
 #define ALL_MOUSE_MODES (MODE_MOUSE_STANDARD|MODE_MOUSE_BUTTON|MODE_MOUSE_ALL)
@@ -1156,8 +1161,9 @@ struct window_pane {
 #define PANE_STATUSDRAWN 0x400
 #define PANE_EMPTY 0x800
 #define PANE_STYLECHANGED 0x1000
-#define PANE_UNSEENCHANGES 0x2000
+#define PANE_THEMECHANGED 0x2000
-#define PANE_REDRAWSCROLLBAR 0x4000
+#define PANE_UNSEENCHANGES 0x4000
+#define PANE_REDRAWSCROLLBAR 0x8000
 
 	u_int		 sb_slider_y;
 	u_int		 sb_slider_h;
@@ -1865,6 +1871,16 @@ struct overlay_ranges {
 	u_int	nx[OVERLAY_MAX_RANGES];
 };
 
+/*
+ * Client theme, this is worked out from the background colour if not reported
+ * by terminal.
+ */
+enum client_theme {
+	THEME_UNKNOWN,
+	THEME_LIGHT,
+	THEME_DARK
+};
+
 /* Client connection. */
 typedef int (*prompt_input_cb)(struct client *, void *, const char *, int);
 typedef void (*prompt_free_cb)(void *);
@@ -1924,6 +1940,7 @@ struct client {
 	struct mouse_event	 click_event;
 
 	struct status_line	 status;
+	enum client_theme	 theme;
 
 #define CLIENT_TERMINAL 0x1
 #define CLIENT_LOGIN 0x2
@@ -2931,6 +2948,8 @@ void	 input_parse_screen(struct input_ctx *, struct screen *,
 void	 input_reply_clipboard(struct bufferevent *, const char *, size_t,
 	     const char *);
 void	 input_set_buffer_size(size_t);
+int 	 input_get_bg_client(struct window_pane *);
+int 	 input_get_bg_control_client(struct window_pane *);
 
 /* input-key.c */
 void	 input_key_build(void);
@@ -2945,7 +2964,8 @@ int	 colour_join_rgb(u_char, u_char, u_char);
 void	 colour_split_rgb(int, u_char *, u_char *, u_char *);
 int	 colour_force_rgb(int);
 const char *colour_tostring(int);
-int	 colour_fromstring(const char *s);
+enum client_theme colour_totheme(int);
+int	 colour_fromstring(const char *);
 int	 colour_256toRGB(int);
 int	 colour_256to16(int);
 int	 colour_byname(const char *);
@@ -3246,6 +3266,13 @@ void		 window_set_fill_character(struct window *);
 void		 window_pane_default_cursor(struct window_pane *);
 int		 window_pane_mode(struct window_pane *);
 int		 window_pane_show_scrollbar(struct window_pane *, int);
+int		 window_pane_get_bg(struct window_pane *);
+int		 window_pane_get_fg(struct window_pane *);
+int		 window_pane_get_fg_control_client(struct window_pane *);
+int		 window_pane_get_bg_control_client(struct window_pane *);
+int		 window_get_bg_client(struct window_pane *);
+enum client_theme window_pane_get_theme(struct window_pane *);
+void		 window_pane_send_theme_update(struct window_pane *);
 
 /* layout.c */
 u_int		 layout_count_cells(struct layout_cell *);
@@ -3443,6 +3470,7 @@ void		 session_group_synchronize_from(struct session *);
 u_int		 session_group_count(struct session_group *);
 u_int		 session_group_attached_count(struct session_group *);
 void		 session_renumber_windows(struct session *);
+void		 session_theme_changed(struct session *);
 
 /* utf8.c */
 enum utf8_state	 utf8_towc (const struct utf8_data *, wchar_t *);

tty-keys.c

@@ -213,6 +213,10 @@ static const struct tty_default_key_raw tty_default_raw_keys[] = {
 
 	/* Extended keys. */
 	{ "\033[1;5Z", '\011'|KEYC_CTRL|KEYC_SHIFT },
+
+	/* Theme reporting. */
+	{ "\033[?997;1n", KEYC_REPORT_DARK_THEME },
+	{ "\033[?997;2n", KEYC_REPORT_LIGHT_THEME },
 };
 
 /* Default xterm keys. */
@@ -791,10 +795,12 @@ tty_keys_next(struct tty *tty)
 	switch (tty_keys_colours(tty, buf, len, &size, &tty->fg, &tty->bg)) {
 	case 0:		/* yes */
 		key = KEYC_UNKNOWN;
+		session_theme_changed(tty->client->session);
 		goto complete_key;
 	case -1:	/* no, or not valid */
 		break;
 	case 1:		/* partial */
+		session_theme_changed(tty->client->session);
 		goto partial_key;
 	}
 

tty.c

@@ -356,6 +356,11 @@ tty_start_tty(struct tty *tty)
 	if (tty_term_has(tty->term, TTYC_ENBP))
 		tty_putcode(tty, TTYC_ENBP);
 
+	if (tty->term->flags & TERM_VT100LIKE) {
+		/* Subscribe to theme changes and request theme now. */
+		tty_puts(tty, "\033[?2031h\033[?996n");
+	}
+
 	evtimer_set(&tty->start_timer, tty_start_timer_callback, tty);
 	evtimer_add(&tty->start_timer, &tv);
 
@@ -468,6 +473,9 @@ tty_stop_tty(struct tty *tty)
 		tty_raw(tty, tty_term_string(tty->term, TTYC_DSMG));
 	tty_raw(tty, tty_term_string(tty->term, TTYC_RMCUP));
 
+	if (tty->term->flags & TERM_VT100LIKE)
+		tty_raw(tty, "\033[?2031l");
+
 	setblocking(c->fd, 1);
 }
 

window.c

@@ -950,7 +950,7 @@ window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
 	wp = xcalloc(1, sizeof *wp);
 	wp->window = w;
 	wp->options = options_create(w->options);
-	wp->flags = PANE_STYLECHANGED;
+	wp->flags = (PANE_STYLECHANGED|PANE_THEMECHANGED);
 
 	wp->id = next_window_pane_id++;
 	RB_INSERT(window_pane_tree, &all_window_panes, wp);
@@ -1769,6 +1769,8 @@ window_set_fill_character(struct window *w)
 		ud = utf8_fromcstr(value);
 		if (ud != NULL && ud[0].width == 1)
 			w->fill_character = ud;
+		else
+			free(ud);
 	}
 }
 
@@ -1802,3 +1804,162 @@ window_pane_show_scrollbar(struct window_pane *wp, int sb_option)
 		return (1);
 	return (0);
 }
+
+int
+window_pane_get_bg(struct window_pane *wp)
+{
+	int			c;
+	struct grid_cell	defaults;
+
+	c = window_pane_get_bg_control_client(wp);
+	if (c == -1) {
+		tty_default_colours(&defaults, wp);
+		if (COLOUR_DEFAULT(defaults.bg))
+			c = window_get_bg_client(wp);
+		else
+			c = defaults.bg;
+	}
+	return (c);
+}
+
+/* Get a client with a background for the pane. */
+int
+window_get_bg_client(struct window_pane *wp)
+{
+	struct window	*w = wp->window;
+	struct client	*loop;
+
+	TAILQ_FOREACH(loop, &clients, entry) {
+		if (loop->flags & CLIENT_UNATTACHEDFLAGS)
+			continue;
+		if (loop->session == NULL || !session_has(loop->session, w))
+			continue;
+		if (loop->tty.bg == -1)
+			continue;
+		return (loop->tty.bg);
+	}
+	return (-1);
+}
+
+/*
+ * If any control mode client exists that has provided a bg color, return it.
+ * Otherwise, return -1.
+ */
+int
+window_pane_get_bg_control_client(struct window_pane *wp)
+{
+	struct client	*c;
+
+	if (wp->control_bg == -1)
+		return (-1);
+
+	TAILQ_FOREACH(c, &clients, entry) {
+		if (c->flags & CLIENT_CONTROL)
+			return (wp->control_bg);
+	}
+	return (-1);
+}
+
+/*
+ * Get a client with a foreground for the pane. There isn't much to choose
+ * between them so just use the first.
+ */
+int
+window_pane_get_fg(struct window_pane *wp)
+{
+	struct window	*w = wp->window;
+	struct client	*loop;
+
+	TAILQ_FOREACH(loop, &clients, entry) {
+		if (loop->flags & CLIENT_UNATTACHEDFLAGS)
+			continue;
+		if (loop->session == NULL || !session_has(loop->session, w))
+			continue;
+		if (loop->tty.fg == -1)
+			continue;
+		return (loop->tty.fg);
+	}
+	return (-1);
+}
+
+/*
+ * If any control mode client exists that has provided a fg color, return it.
+ * Otherwise, return -1.
+ */
+int
+window_pane_get_fg_control_client(struct window_pane *wp)
+{
+	struct client	*c;
+
+	if (wp->control_fg == -1)
+		return (-1);
+
+	TAILQ_FOREACH(c, &clients, entry) {
+		if (c->flags & CLIENT_CONTROL)
+			return (wp->control_fg);
+	}
+	return (-1);
+}
+
+enum client_theme
+window_pane_get_theme(struct window_pane *wp)
+{
+	struct window		*w = wp->window;
+	struct client		*loop;
+	enum client_theme	 theme;
+	int			 found_light = 0, found_dark = 0;
+
+	/*
+	 * Derive theme from pane background color, if it's not the default
+	 * colour.
+	 */
+	theme = colour_totheme(window_pane_get_bg(wp));
+	if (theme != THEME_UNKNOWN)
+		return (theme);
+
+	/* Try to find a client that has a theme. */
+	TAILQ_FOREACH(loop, &clients, entry) {
+		if (loop->flags & CLIENT_UNATTACHEDFLAGS)
+			continue;
+		if (loop->session == NULL || !session_has(loop->session, w))
+			continue;
+		switch (loop->theme) {
+		case THEME_LIGHT:
+			found_light = 1;
+			break;
+		case THEME_DARK:
+			found_dark = 1;
+			break;
+		case THEME_UNKNOWN:
+			break;
+		}
+	}
+
+	if (found_dark && !found_light)
+		return (THEME_DARK);
+	if (found_light && !found_dark)
+		return (THEME_LIGHT);
+	return (THEME_UNKNOWN);
+}
+
+void
+window_pane_send_theme_update(struct window_pane *wp)
+{
+	if (~wp->flags & PANE_THEMECHANGED)
+		return;
+	if (~wp->screen->mode & MODE_THEME_UPDATES)
+		return;
+
+	switch (window_pane_get_theme(wp)) {
+	case THEME_LIGHT:
+		input_key_pane(wp, KEYC_REPORT_LIGHT_THEME, NULL);
+		break;
+	case THEME_DARK:
+		input_key_pane(wp, KEYC_REPORT_DARK_THEME, NULL);
+		break;
+	case THEME_UNKNOWN:
+		break;
+	}
+
+	wp->flags &= ~PANE_THEMECHANGED;
+}