Add common/edge.c

include/common/direction.h

@@ -3,7 +3,7 @@
 #define LABWC_DIRECTION_H
 
 #include <wlr/types/wlr_output_layout.h>
-#include "config/types.h"
+#include "common/edge.h"
 
 bool direction_from_edge(enum lab_edge edge, enum wlr_direction *direction);
 enum wlr_direction direction_get_opposite(enum wlr_direction direction);

include/common/edge.h

@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef LABWC_EDGE_H
+#define LABWC_EDGE_H
+
+#include <wayland-server-core.h>
+
+/**
+ * Represents an edge or direction (e.g. window tiling, window motion)
+ */
+enum lab_edge {
+	LAB_EDGE_INVALID = 0,
+
+	LAB_EDGE_LEFT = (1 << 0),
+	LAB_EDGE_RIGHT = (1 << 1),
+	LAB_EDGE_UP = (1 << 2),
+	LAB_EDGE_DOWN = (1 << 3),
+	LAB_EDGE_CENTER = (1 << 4), /* for window tiling */
+	LAB_EDGE_ANY = (1 << 5), /* for window rules */
+
+	/* for window tiling */
+	LAB_EDGE_UPLEFT = (LAB_EDGE_UP | LAB_EDGE_LEFT),
+	LAB_EDGE_UPRIGHT = (LAB_EDGE_UP | LAB_EDGE_RIGHT),
+	LAB_EDGE_DOWNLEFT = (LAB_EDGE_DOWN | LAB_EDGE_LEFT),
+	LAB_EDGE_DOWNRIGHT = (LAB_EDGE_DOWN | LAB_EDGE_RIGHT),
+};
+
+enum lab_edge lab_edge_parse(const char *direction, bool tiled, bool any);
+
+/**
+ * lab_edge_invert() - select the opposite of a provided edge
+ *
+ * Returns LAB_EDGE_INVALID for edges other than UP/DOWN/LEFT/RIGHT.
+ *
+ * @edge: edge to be inverted
+ */
+enum lab_edge lab_edge_invert(enum lab_edge edge);
+
+#endif /* LABWC_EDGE_H */