action: make "FocusOutput" behave like "MoveToOutput"

src/common/direction.c

@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <assert.h>
+#include <wlr/types/wlr_output_layout.h>
+#include "common/direction.h"
+#include "view.h"
+
+enum wlr_direction
+direction_from_view_edge(enum view_edge edge)
+{
+	switch (edge) {
+	case VIEW_EDGE_LEFT:
+		return WLR_DIRECTION_LEFT;
+	case VIEW_EDGE_RIGHT:
+		return WLR_DIRECTION_RIGHT;
+	case VIEW_EDGE_UP:
+		return WLR_DIRECTION_UP;
+	case VIEW_EDGE_DOWN:
+		return WLR_DIRECTION_DOWN;
+	case VIEW_EDGE_CENTER:
+	case VIEW_EDGE_INVALID:
+	default:
+		return WLR_DIRECTION_UP;
+	}
+}
+
+enum wlr_direction
+direction_get_opposite(enum wlr_direction direction)
+{
+	switch (direction) {
+	case WLR_DIRECTION_RIGHT:
+		return WLR_DIRECTION_LEFT;
+	case WLR_DIRECTION_LEFT:
+		return WLR_DIRECTION_RIGHT;
+	case WLR_DIRECTION_DOWN:
+		return WLR_DIRECTION_UP;
+	case WLR_DIRECTION_UP:
+		return WLR_DIRECTION_DOWN;
+	default:
+		assert(0); /* Unreachable */
+		return WLR_DIRECTION_UP;
+	}
+}

src/common/meson.build

@@ -1,5 +1,6 @@
 labwc_sources += files(
-	'box.c',
+  'direction.c',
+  'box.c',
   'buf.c',
   'dir.c',
   'fd-util.c',