From 531869bd92f0daff3cc3c3cc0ab273846f411dc8 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Fri, 13 Nov 2015 10:00:26 +0000
Subject: [PATCH] Add window_visible_layout which ignores zoomed panes and use
 it for control mode (which needs to know all panes), from George Nachman.

---
 control-notify.c | 11 +++++++++--
 format.c         | 15 +++++++++++++++
 tmux.1           |  9 +++++++--
 3 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/control-notify.c b/control-notify.c
index 943d670c..16a98e3a 100644
--- a/control-notify.c
+++ b/control-notify.c
@@ -19,6 +19,8 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
+
 #include "tmux.h"
 
 #define CONTROL_SHOULD_NOTIFY_CLIENT(c) \
@@ -65,6 +67,10 @@ control_notify_window_layout_changed(struct window *w)
 	struct format_tree	*ft;
 	struct winlink		*wl;
 	const char		*template;
+	char			*expanded;
+
+	template = "%layout-change #{window_id} #{window_layout} "
+	    "#{window_visible_layout} #{window_flags}";
 
 	TAILQ_FOREACH(c, &clients, entry) {
 		if (!CONTROL_SHOULD_NOTIFY_CLIENT(c) || c->session == NULL)
@@ -81,13 +87,14 @@ control_notify_window_layout_changed(struct window *w)
 		 */
 		if (w->layout_root == NULL)
 			continue;
-		template = "%layout-change #{window_id} #{window_layout}";
 
 		ft = format_create();
 		wl = winlink_find_by_window(&s->windows, w);
 		if (wl != NULL) {
 			format_defaults(ft, c, NULL, wl, NULL);
-			control_write(c, "%s", format_expand(ft, template));
+			expanded = format_expand(ft, template);
+			control_write(c, "%s", expanded);
+			free(expanded);
 		}
 		format_free(ft);
 	}
diff --git a/format.c b/format.c
index 389026ac..9cfee277 100644
--- a/format.c
+++ b/format.c
@@ -48,6 +48,7 @@ void	 format_cb_host_short(struct format_tree *, struct format_entry *);
 void	 format_cb_pid(struct format_tree *, struct format_entry *);
 void	 format_cb_session_alerts(struct format_tree *, struct format_entry *);
 void	 format_cb_window_layout(struct format_tree *, struct format_entry *);
+void format_cb_window_visible_layout(struct format_tree *, struct format_entry *);
 void	 format_cb_start_command(struct format_tree *, struct format_entry *);
 void	 format_cb_current_command(struct format_tree *, struct format_entry *);
 void	 format_cb_history_bytes(struct format_tree *, struct format_entry *);
@@ -362,6 +363,18 @@ format_cb_window_layout(struct format_tree *ft, struct format_entry *fe)
 		fe->value = layout_dump(w->layout_root);
 }
 
+/* Callback for window_visible_layout. */
+void
+format_cb_window_visible_layout(struct format_tree *ft, struct format_entry *fe)
+{
+	struct window	*w = ft->w;
+
+	if (w == NULL)
+		return;
+
+	fe->value = layout_dump(w->layout_root);
+}
+
 /* Callback for pane_start_command. */
 void
 format_cb_start_command(struct format_tree *ft, struct format_entry *fe)
@@ -1024,6 +1037,8 @@ format_defaults_window(struct format_tree *ft, struct window *w)
 	format_add(ft, "window_width", "%u", w->sx);
 	format_add(ft, "window_height", "%u", w->sy);
 	format_add_cb(ft, "window_layout", format_cb_window_layout);
+	format_add_cb(ft, "window_visible_layout",
+	    format_cb_window_visible_layout);
 	format_add(ft, "window_panes", "%u", window_count_panes(w));
 	format_add(ft, "window_zoomed_flag", "%d",
 	    !!(w->flags & WINDOW_ZOOMED));
diff --git a/tmux.1 b/tmux.1
index e0646697..3a08c8cd 100644
--- a/tmux.1
+++ b/tmux.1
@@ -3412,11 +3412,12 @@ The following variables are available, where appropriate:
 .It Li "window_id" Ta "" Ta "Unique window ID"
 .It Li "window_index" Ta "#I" Ta "Index of window"
 .It Li "window_last_flag" Ta "" Ta "1 if window is the last used"
-.It Li "window_layout" Ta "" Ta "Window layout description"
+.It Li "window_layout" Ta "" Ta "Window layout description, ignoring zoomed window panes"
 .It Li "window_linked" Ta "" Ta "1 if window is linked across sessions"
 .It Li "window_name" Ta "#W" Ta "Name of window"
 .It Li "window_panes" Ta "" Ta "Number of panes in window"
 .It Li "window_silence_flag" Ta "" Ta "1 if window has silence alert"
+.It Li "window_visible_layout" Ta "" Ta "Window layout description, respecting zoomed window panes"
 .It Li "window_width" Ta "" Ta "Width of window"
 .It Li "window_zoomed_flag" Ta "" Ta "1 if window is zoomed"
 .It Li "wrap_flag" Ta "" Ta "Pane wrap flag"
@@ -4007,12 +4008,16 @@ or an error occurred.
 If present,
 .Ar reason
 describes why the client exited.
-.It Ic %layout-change Ar window-id Ar window-layout
+.It Ic %layout-change Ar window-id Ar window-layout Ar window-visible-layout Ar window-flags
 The layout of a window with ID
 .Ar window-id
 changed.
 The new layout is
 .Ar window-layout .
+The window's visible layout is
+.Ar window-visible-layout
+and the window flags are
+.Ar window-flags .
 .It Ic %output Ar pane-id Ar value
 A window pane produced output.
 .Ar value