Add common/edge.c

src/common/edge.c

@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include "common/edge.h"
+#include <strings.h>
+
+enum lab_edge
+lab_edge_parse(const char *direction, bool tiled, bool any)
+{
+	if (!direction) {
+		return LAB_EDGE_INVALID;
+	}
+	if (!strcasecmp(direction, "left")) {
+		return LAB_EDGE_LEFT;
+	} else if (!strcasecmp(direction, "up")) {
+		return LAB_EDGE_UP;
+	} else if (!strcasecmp(direction, "right")) {
+		return LAB_EDGE_RIGHT;
+	} else if (!strcasecmp(direction, "down")) {
+		return LAB_EDGE_DOWN;
+	}
+
+	if (any) {
+		if (!strcasecmp(direction, "any")) {
+			return LAB_EDGE_ANY;
+		}
+	}
+
+	if (tiled) {
+		if (!strcasecmp(direction, "center")) {
+			return LAB_EDGE_CENTER;
+		} else if (!strcasecmp(direction, "up-left")) {
+			return LAB_EDGE_UPLEFT;
+		} else if (!strcasecmp(direction, "up-right")) {
+			return LAB_EDGE_UPRIGHT;
+		} else if (!strcasecmp(direction, "down-left")) {
+			return LAB_EDGE_DOWNLEFT;
+		} else if (!strcasecmp(direction, "down-right")) {
+			return LAB_EDGE_DOWNRIGHT;
+		}
+	}
+
+	return LAB_EDGE_INVALID;
+}
+
+enum lab_edge
+lab_edge_invert(enum lab_edge edge)
+{
+	switch (edge) {
+	case LAB_EDGE_LEFT:
+		return LAB_EDGE_RIGHT;
+	case LAB_EDGE_RIGHT:
+		return LAB_EDGE_LEFT;
+	case LAB_EDGE_UP:
+		return LAB_EDGE_DOWN;
+	case LAB_EDGE_DOWN:
+		return LAB_EDGE_UP;
+	default:
+		return LAB_EDGE_INVALID;
+	}
+}

src/common/meson.build

@@ -3,6 +3,7 @@ labwc_sources += files(
   'box.c',
   'buf.c',
   'dir.c',
+  'edge.c',
   'fd-util.c',
   'file-helpers.c',
   'font.c',