Add resize-pane -Z to temporary zoom the active pane to occupy the full window

or unzoom (restored to the normal layout) if it already zoomed, bound to C-b z
by default. The pane is unzoomed on pretty much any excuse whatsoever.

We considered making this a new layout but the requirements are quite different
from layouts so decided it is better as a special case. Each current layout
cell is saved, a temporary one-cell layout generated and all except the active
pane set to NULL.

Prompted by suggestions and scripts from several. Thanks to Aaron Jensen and
Thiago Padilha for testing an earlier version.

1 files changed, 55 insertions, 1 deletions

diff --git a/window.c b/window.c
index 5ca18114..fc06e871 100644
--- a/window.c
+++ b/window.c
@@ -316,7 +316,7 @@ window_create(const char *name, const char *cmd, const char *shell,
 
 	w = window_create1(sx, sy);
 	wp = window_add_pane(w, hlimit);
-	layout_init(w);
+	layout_init(w, wp);
 
 	if (*cmd != '\0') {
 		prefix = options_get_string(&w->options, "command-prefix");
@@ -345,6 +345,8 @@ window_destroy(struct window *w)
 {
 	u_int	i;
 
+	window_unzoom(w);
+
 	if (window_index(w, &i) != 0)
 		fatalx("index not found");
 	ARRAY_SET(&windows, i, NULL);
@@ -467,6 +469,54 @@ window_find_string(struct window *w, const char *s)
 	return (window_get_active_at(w, x, y));
 }
 
+int
+window_zoom(struct window_pane *wp)
+{
+	struct window		*w = wp->window;
+	struct window_pane	*wp1;
+
+	if (w->flags & WINDOW_ZOOMED)
+		return (-1);
+
+	if (!window_pane_visible(wp))
+		return (-1);
+	if (w->active != wp)
+		window_set_active_pane(w, wp);
+
+	TAILQ_FOREACH(wp1, &w->panes, entry) {
+		wp1->saved_layout_cell = wp1->layout_cell;
+		wp1->layout_cell = NULL;
+	}
+
+	w->saved_layout_root = w->layout_root;
+	layout_init(w, wp);
+	w->flags |= WINDOW_ZOOMED;
+
+	return (0);
+}
+
+int
+window_unzoom(struct window *w)
+{
+	struct window_pane	*wp, *wp1;
+
+	if (!(w->flags & WINDOW_ZOOMED))
+		return (-1);
+	wp = w->active;
+
+	w->flags &= ~WINDOW_ZOOMED;
+	layout_free(w);
+	w->layout_root = w->saved_layout_root;
+
+	TAILQ_FOREACH(wp1, &w->panes, entry) {
+		wp1->layout_cell = wp1->saved_layout_cell;
+		wp1->saved_layout_cell = NULL;
+	}
+	layout_fix_panes(w, w->sx, w->sy);
+
+	return (0);
+}
+
 struct window_pane *
 window_add_pane(struct window *w, u_int hlimit)
 {
@@ -597,6 +647,8 @@ window_printable_flags(struct session *s, struct winlink *wl)
 		flags[pos++] = '*';
 	if (wl == TAILQ_FIRST(&s->lastw))
 		flags[pos++] = '-';
+	if (wl->window->flags & WINDOW_ZOOMED)
+		flags[pos++] = 'Z';
 	if (pos == 0)
 		flags[pos++] = ' ';
 	flags[pos] = '\0';
@@ -1030,6 +1082,8 @@ window_pane_visible(struct window_pane *wp)
 {
 	struct window	*w = wp->window;
 
+	if (wp->layout_cell == NULL)
+		return (0);
 	if (wp->xoff >= w->sx || wp->yoff >= w->sy)
 		return (0);
 	if (wp->xoff + wp->sx > w->sx || wp->yoff + wp->sy > w->sy)