Add libinput RotationAngle

This patch adds the libinput option RotationAngle to sway.

Signoff-by: Lucas Zampieri <lzampier@redhat.com>

2 files changed, 30 insertions, 0 deletions

diff --git a/sway/commands/input.c b/sway/commands/input.c
index ea531659..740124ea 100644
--- a/sway/commands/input.c
+++ b/sway/commands/input.c
@@ -23,6 +23,7 @@ static const struct cmd_handler input_handlers[] = {
 	{ "middle_emulation", input_cmd_middle_emulation },
 	{ "natural_scroll", input_cmd_natural_scroll },
 	{ "pointer_accel", input_cmd_pointer_accel },
+	{ "rotation_angle", input_cmd_rotation_angle },
 	{ "repeat_delay", input_cmd_repeat_delay },
 	{ "repeat_rate", input_cmd_repeat_rate },
 	{ "scroll_button", input_cmd_scroll_button },
diff --git a/sway/commands/input/rotation_angle.c b/sway/commands/input/rotation_angle.c
new file mode 100644
index 00000000..5e278fff
--- /dev/null
+++ b/sway/commands/input/rotation_angle.c
@@ -0,0 +1,29 @@
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+#include "sway/config.h"
+#include "sway/commands.h"
+#include "sway/input/input-manager.h"
+#include "util.h"
+
+struct cmd_results *input_cmd_rotation_angle(int argc, char **argv) {
+	struct cmd_results *error = NULL;
+	if ((error = checkarg(argc, "rotation_angle", EXPECTED_AT_LEAST, 1))) {
+		return error;
+	}
+	struct input_config *ic = config->handler_context.input_config;
+	if (!ic) {
+		return cmd_results_new(CMD_FAILURE, "No input device defined.");
+	}
+
+	float rotation_angle = parse_float(argv[0]);
+	if (isnan(rotation_angle)) {
+		return cmd_results_new(CMD_INVALID,
+			"Invalid rotation_angle; expected float.");
+	} if (rotation_angle < 0 || rotation_angle > 360) {
+		return cmd_results_new(CMD_INVALID, "Input out of range [0, 360)");
+	}
+	ic->rotation_angle = rotation_angle;
+
+	return cmd_results_new(CMD_SUCCESS, NULL);
+}