Make focus part of transactions

Rather than maintain copies of the entire focus stack, this PR
transactionises the focus by introducing two new properties to the
container state and using those when rendering.

* `bool focused` means this container has actual focus. Only one
container should have this equalling true in its current state.
* `struct sway_container *focus_inactive_child` points to the immediate
child that was most recently focused (eg. for tabbed and stacked
containers).

1 files changed, 3 insertions, 0 deletions

diff --git a/sway/input/cursor.c b/sway/input/cursor.c
index 307eedd4..7a9f3ed7 100644
--- a/sway/input/cursor.c
+++ b/sway/input/cursor.c
@@ -10,6 +10,7 @@
 #include <wlr/types/wlr_idle.h>
 #include "list.h"
 #include "log.h"
+#include "sway/desktop/transaction.h"
 #include "sway/input/cursor.h"
 #include "sway/layers.h"
 #include "sway/output.h"
@@ -219,6 +220,7 @@ void cursor_send_pointer_motion(struct sway_cursor *cursor, uint32_t time_msec,
                 struct sway_drag_icon *drag_icon = wlr_drag_icon->data;
                 drag_icon_update_position(drag_icon);
         }
+        transaction_commit_dirty();
 }
 
 static void handle_cursor_motion(struct wl_listener *listener, void *data) {
@@ -278,6 +280,7 @@ void dispatch_cursor_button(struct sway_cursor *cursor,
 
         wlr_seat_pointer_notify_button(cursor->seat->wlr_seat,
                         time_msec, button, state);
+        transaction_commit_dirty();
 }
 
 static void handle_cursor_button(struct wl_listener *listener, void *data) {