Add -Z flag to rotate-window, select-pane, swap-pane, switch-client to

preserve zoomed state. GitHub issue 1839.

cmd-rotate-window.c

@@ -31,8 +31,8 @@ const struct cmd_entry cmd_rotate_window_entry = {
 	.name = "rotate-window",
 	.alias = "rotatew",
 
-	.args = { "Dt:U", 0, 0 },
+	.args = { "Dt:UZ", 0, 0 },
-	.usage = "[-DU] " CMD_TARGET_WINDOW_USAGE,
+	.usage = "[-DUZ] " CMD_TARGET_WINDOW_USAGE,
 
 	.target = { 't', CMD_FIND_WINDOW, 0 },
 
@@ -50,7 +50,7 @@ cmd_rotate_window_exec(struct cmd *self, struct cmdq_item *item)
 	struct layout_cell	*lc;
 	u_int			 sx, sy, xoff, yoff;
 
-	server_unzoom_window(w);
+	window_push_zoom(w, args_has(self->args, 'Z'));
 
 	if (args_has(self->args, 'D')) {
 		wp = TAILQ_LAST(&w->panes, window_panes);
@@ -77,9 +77,6 @@ cmd_rotate_window_exec(struct cmd *self, struct cmdq_item *item)
 
 		if ((wp = TAILQ_PREV(w->active, window_panes, entry)) == NULL)
 			wp = TAILQ_LAST(&w->panes, window_panes);
-		window_set_active_pane(w, wp, 1);
-		cmd_find_from_winlink_pane(current, wl, wp, 0);
-		server_redraw_window(w);
 	} else {
 		wp = TAILQ_FIRST(&w->panes);
 		TAILQ_REMOVE(&w->panes, wp, entry);
@@ -105,10 +102,12 @@ cmd_rotate_window_exec(struct cmd *self, struct cmdq_item *item)
 
 		if ((wp = TAILQ_NEXT(w->active, entry)) == NULL)
 			wp = TAILQ_FIRST(&w->panes);
-		window_set_active_pane(w, wp, 1);
-		cmd_find_from_winlink_pane(current, wl, wp, 0);
-		server_redraw_window(w);
 	}
 
+	window_set_active_pane(w, wp, 1);
+	cmd_find_from_winlink_pane(current, wl, wp, 0);
+	window_pop_zoom(w);
+	server_redraw_window(w);
+
 	return (CMD_RETURN_NORMAL);
 }

cmd-select-pane.c

@@ -33,8 +33,8 @@ const struct cmd_entry cmd_select_pane_entry = {
 	.name = "select-pane",
 	.alias = "selectp",
 
-	.args = { "DdegLlMmP:RT:t:U", 0, 0 }, /* -P and -g deprecated */
+	.args = { "DdegLlMmP:RT:t:UZ", 0, 0 }, /* -P and -g deprecated */
-	.usage = "[-DdeLlMmRU] [-T title] " CMD_TARGET_PANE_USAGE,
+	.usage = "[-DdeLlMmRUZ] [-T title] " CMD_TARGET_PANE_USAGE,
 
 	.target = { 't', CMD_FIND_PANE, 0 },
 
@@ -46,8 +46,8 @@ const struct cmd_entry cmd_last_pane_entry = {
 	.name = "last-pane",
 	.alias = "lastp",
 
-	.args = { "det:", 0, 0 },
+	.args = { "det:Z", 0, 0 },
-	.usage = "[-de] " CMD_TARGET_WINDOW_USAGE,
+	.usage = "[-deZ] " CMD_TARGET_WINDOW_USAGE,
 
 	.target = { 't', CMD_FIND_WINDOW, 0 },
 
@@ -111,12 +111,15 @@ cmd_select_pane_exec(struct cmd *self, struct cmdq_item *item)
 		else if (args_has(self->args, 'd'))
 			lastwp->flags |= PANE_INPUTOFF;
 		else {
-			server_unzoom_window(w);
+			if (window_push_zoom(w, args_has(self->args, 'Z')))
+				server_redraw_window(w);
 			window_redraw_active_switch(w, lastwp);
 			if (window_set_active_pane(w, lastwp, 1)) {
 				cmd_find_from_winlink(current, wl, 0);
 				cmd_select_pane_redraw(w);
 			}
+			if (window_pop_zoom(w))
+				server_redraw_window(w);
 		}
 		return (CMD_RETURN_NORMAL);
 	}
@@ -161,17 +164,21 @@ cmd_select_pane_exec(struct cmd *self, struct cmdq_item *item)
 	}
 
 	if (args_has(self->args, 'L')) {
-		server_unzoom_window(wp->window);
+		window_push_zoom(w, 1);
 		wp = window_pane_find_left(wp);
+		window_pop_zoom(w);
 	} else if (args_has(self->args, 'R')) {
-		server_unzoom_window(wp->window);
+		window_push_zoom(w, 1);
 		wp = window_pane_find_right(wp);
+		window_pop_zoom(w);
 	} else if (args_has(self->args, 'U')) {
-		server_unzoom_window(wp->window);
+		window_push_zoom(w, 1);
 		wp = window_pane_find_up(wp);
+		window_pop_zoom(w);
 	} else if (args_has(self->args, 'D')) {
-		server_unzoom_window(wp->window);
+		window_push_zoom(w, 1);
 		wp = window_pane_find_down(wp);
+		window_pop_zoom(w);
 	}
 	if (wp == NULL)
 		return (CMD_RETURN_NORMAL);
@@ -196,13 +203,16 @@ cmd_select_pane_exec(struct cmd *self, struct cmdq_item *item)
 
 	if (wp == w->active)
 		return (CMD_RETURN_NORMAL);
-	server_unzoom_window(wp->window);
+	if (window_push_zoom(w, args_has(self->args, 'Z')))
+		server_redraw_window(w);
 	window_redraw_active_switch(w, wp);
 	if (window_set_active_pane(w, wp, 1)) {
 		cmd_find_from_winlink_pane(current, wl, wp, 0);
 		cmdq_insert_hook(s, item, current, "after-select-pane");
 		cmd_select_pane_redraw(w);
 	}
+	if (window_pop_zoom(w))
+		server_redraw_window(w);
 
 	return (CMD_RETURN_NORMAL);
 }

cmd-swap-pane.c

@@ -32,8 +32,8 @@ const struct cmd_entry cmd_swap_pane_entry = {
 	.name = "swap-pane",
 	.alias = "swapp",
 
-	.args = { "dDs:t:U", 0, 0 },
+	.args = { "dDs:t:UZ", 0, 0 },
-	.usage = "[-dDU] " CMD_SRCDST_PANE_USAGE,
+	.usage = "[-dDUZ] " CMD_SRCDST_PANE_USAGE,
 
 	.source = { 's', CMD_FIND_PANE, CMD_FIND_DEFAULT_MARKED },
 	.target = { 't', CMD_FIND_PANE, 0 },
@@ -45,6 +45,7 @@ const struct cmd_entry cmd_swap_pane_entry = {
 static enum cmd_retval
 cmd_swap_pane_exec(struct cmd *self, struct cmdq_item *item)
 {
+	struct args		*args = self->args;
 	struct window		*src_w, *dst_w;
 	struct window_pane	*tmp_wp, *src_wp, *dst_wp;
 	struct layout_cell	*src_lc, *dst_lc;
@@ -54,23 +55,27 @@ cmd_swap_pane_exec(struct cmd *self, struct cmdq_item *item)
 	dst_wp = item->target.wp;
 	src_w = item->source.wl->window;
 	src_wp = item->source.wp;
-	server_unzoom_window(dst_w);
 
-	if (args_has(self->args, 'D')) {
+	if (window_push_zoom(dst_w, args_has(args, 'Z')))
+		server_redraw_window(dst_w);
+
+	if (args_has(args, 'D')) {
 		src_w = dst_w;
 		src_wp = TAILQ_NEXT(dst_wp, entry);
 		if (src_wp == NULL)
 			src_wp = TAILQ_FIRST(&dst_w->panes);
-	} else if (args_has(self->args, 'U')) {
+	} else if (args_has(args, 'U')) {
 		src_w = dst_w;
 		src_wp = TAILQ_PREV(dst_wp, window_panes, entry);
 		if (src_wp == NULL)
 			src_wp = TAILQ_LAST(&dst_w->panes, window_panes);
 	}
-	server_unzoom_window(src_w);
+
+	if (src_w != dst_w && window_push_zoom(src_w, args_has(args, 'Z')))
+		server_redraw_window(src_w);
 
 	if (src_wp == dst_wp)
-		return (CMD_RETURN_NORMAL);
+		goto out;
 
 	tmp_wp = TAILQ_PREV(dst_wp, window_panes, entry);
 	TAILQ_REMOVE(&dst_w->panes, dst_wp, entry);
@@ -103,7 +108,7 @@ cmd_swap_pane_exec(struct cmd *self, struct cmdq_item *item)
 	dst_wp->xoff = xoff; dst_wp->yoff = yoff;
 	window_pane_resize(dst_wp, sx, sy);
 
-	if (!args_has(self->args, 'd')) {
+	if (!args_has(args, 'd')) {
 		if (src_w != dst_w) {
 			window_set_active_pane(src_w, dst_wp, 1);
 			window_set_active_pane(dst_w, src_wp, 1);
@@ -126,5 +131,10 @@ cmd_swap_pane_exec(struct cmd *self, struct cmdq_item *item)
 	server_redraw_window(src_w);
 	server_redraw_window(dst_w);
 
+out:
+	if (window_pop_zoom(src_w))
+		server_redraw_window(src_w);
+	if (src_w != dst_w && window_pop_zoom(dst_w))
+		server_redraw_window(dst_w);
 	return (CMD_RETURN_NORMAL);
 }

cmd-switch-client.c

@@ -34,8 +34,8 @@ const struct cmd_entry cmd_switch_client_entry = {
 	.name = "switch-client",
 	.alias = "switchc",
 
-	.args = { "lc:Enpt:rT:", 0, 0 },
+	.args = { "lc:Enpt:rT:Z", 0, 0 },
-	.usage = "[-Elnpr] [-c target-client] [-t target-session] "
+	.usage = "[-ElnprZ] [-c target-client] [-t target-session] "
 		 "[-T key-table]",
 
 	/* -t is special */
@@ -54,6 +54,7 @@ cmd_switch_client_exec(struct cmd *self, struct cmdq_item *item)
 	struct client		*c;
 	struct session		*s;
 	struct winlink		*wl;
+	struct window		*w;
 	struct window_pane	*wp;
 	const char		*tablename;
 	struct key_table	*table;
@@ -72,6 +73,7 @@ cmd_switch_client_exec(struct cmd *self, struct cmdq_item *item)
 		return (CMD_RETURN_ERROR);
 	s = item->target.s;
 	wl = item->target.wl;
+	w = wl->window;
 	wp = item->target.wp;
 
 	if (args_has(args, 'r'))
@@ -112,12 +114,15 @@ cmd_switch_client_exec(struct cmd *self, struct cmdq_item *item)
 	} else {
 		if (item->client == NULL)
 			return (CMD_RETURN_NORMAL);
+		if (wl != NULL && wp != NULL) {
+			if (window_push_zoom(w, args_has(self->args, 'Z')))
+				server_redraw_window(w);
+			window_redraw_active_switch(w, wp);
+			window_set_active_pane(w, wp, 1);
+			if (window_pop_zoom(w))
+				server_redraw_window(w);
+		}
 		if (wl != NULL) {
-			server_unzoom_window(wl->window);
-			if (wp != NULL) {
-				window_redraw_active_switch(wp->window, wp);
-				window_set_active_pane(wp->window, wp, 1);
-			}
 			session_set_current(s, wl);
 			cmd_find_from_session(&item->shared->current, s, 0);
 		}

tmux.1

@@ -1291,7 +1291,7 @@ Suspend a client by sending
 .Dv SIGTSTP
 (tty stop).
 .It Xo Ic switch-client
-.Op Fl Elnpr
+.Op Fl ElnprZ
 .Op Fl c Ar target-client
 .Op Fl t Ar target-session
 .Op Fl T Ar key-table
@@ -1308,7 +1308,10 @@ may refer to a pane (a target that contains
 .Ql \&.
 or
 .Ql % ) ,
-in which case the session, window and pane are all changed.
+to change session, window and pane.
+In that case,
+.Fl Z
+keeps the window zoomed if it was zoomed.
 If
 .Fl l ,
 .Fl n
@@ -1934,11 +1937,13 @@ The
 option kills all but the window given with
 .Fl t .
 .It Xo Ic last-pane
-.Op Fl de
+.Op Fl deZ
 .Op Fl t Ar target-window
 .Xc
 .D1 (alias: Ic lastp )
 Select the last (previously selected) pane.
+.Fl Z
+keeps the window zoomed if it was zoomed.
 .Fl e
 enables or
 .Fl d
@@ -2320,7 +2325,7 @@ option has the same meaning as for the
 .Ic new-window
 command.
 .It Xo Ic rotate-window
-.Op Fl DU
+.Op Fl DUZ
 .Op Fl t Ar target-window
 .Xc
 .D1 (alias: Ic rotatew )
@@ -2328,6 +2333,8 @@ Rotate the positions of the panes within a window, either upward (numerically
 lower) with
 .Fl U
 or downward (numerically higher).
+.Fl Z
+keeps the window zoomed if it was zoomed.
 .It Xo Ic select-layout
 .Op Fl Enop
 .Op Fl t Ar target-pane
@@ -2351,7 +2358,7 @@ applies the last set layout if possible (undoes the most recent layout change).
 .Fl E
 spreads the current pane and any panes next to it out evenly.
 .It Xo Ic select-pane
-.Op Fl DdeLlMmRU
+.Op Fl DdeLlMmRUZ
 .Op Fl T Ar title
 .Op Fl t Ar target-pane
 .Xc
@@ -2368,6 +2375,8 @@ or
 .Fl U
 is used, respectively the pane below, to the left, to the right, or above the
 target pane is used.
+.Fl Z
+keeps the window zoomed if it was zoomed.
 .Fl l
 is the same as using the
 .Ic last-pane
@@ -2473,7 +2482,7 @@ All other options have the same meaning as for the
 .Ic new-window
 command.
 .It Xo Ic swap-pane
-.Op Fl dDU
+.Op Fl dDUZ
 .Op Fl s Ar src-pane
 .Op Fl t Ar dst-pane
 .Xc
@@ -2490,7 +2499,9 @@ swaps with the next pane (after it numerically).
 .Fl d
 instructs
 .Nm
-not to change the active pane.
+not to change the active pane and
+.Fl Z
+keeps the window zoomed if it was zoomed.
 .Pp
 If
 .Fl s

tmux.h

@@ -922,6 +922,7 @@ struct window {
 #define WINDOW_ACTIVITY 0x2
 #define WINDOW_SILENCE 0x4
 #define WINDOW_ZOOMED 0x8
+#define WINDOW_WASZOOMED 0x10
 #define WINDOW_ALERTFLAGS (WINDOW_BELL|WINDOW_ACTIVITY|WINDOW_SILENCE)
 
 	int		 alerts_queued;
@@ -2381,6 +2382,8 @@ struct window_pane *window_add_pane(struct window *, struct window_pane *,
 void		 window_resize(struct window *, u_int, u_int);
 int		 window_zoom(struct window_pane *);
 int		 window_unzoom(struct window *);
+int		 window_push_zoom(struct window *, int);
+int		 window_pop_zoom(struct window *);
 void		 window_lost_pane(struct window *, struct window_pane *);
 void		 window_remove_pane(struct window *, struct window_pane *);
 struct window_pane *window_pane_at_index(struct window *, u_int);

window.c

@@ -587,6 +587,28 @@ window_unzoom(struct window *w)
 	return (0);
 }
 
+int
+window_push_zoom(struct window *w, int flag)
+{
+	log_debug("%s: @%u %d", __func__, w->id,
+	    flag && (w->flags & WINDOW_ZOOMED));
+	if (flag && (w->flags & WINDOW_ZOOMED))
+		w->flags |= WINDOW_WASZOOMED;
+	else
+		w->flags &= ~WINDOW_WASZOOMED;
+	return (window_unzoom(w) == 0);
+}
+
+int
+window_pop_zoom(struct window *w)
+{
+	log_debug("%s: @%u %d", __func__, w->id,
+	    !!(w->flags & WINDOW_WASZOOMED));
+	if (w->flags & WINDOW_WASZOOMED)
+		return (window_zoom(w->active) == 0);
+	return (0);
+}
+
 struct window_pane *
 window_add_pane(struct window *w, struct window_pane *other, u_int hlimit,
     int flags)