Add left_handed support for input devices

Some users may want to switch buttons on their input devices, turns out
libinput already supports it. Let's add a support for it in our config.

Signed-off-by: Michał Winiarski <knr@hardline.pl>

1 files changed, 25 insertions, 0 deletions

diff --git a/sway/commands/input/left_handed.c b/sway/commands/input/left_handed.c
new file mode 100644
index 00000000..3278bd33
--- /dev/null
+++ b/sway/commands/input/left_handed.c
@@ -0,0 +1,25 @@
+#include <string.h>
+#include "sway/commands.h"
+#include "sway/input.h"
+
+struct cmd_results *input_cmd_left_handed(int argc, char **argv) {
+	struct cmd_results *error = NULL;
+	if ((error = checkarg(argc, "left_handed", EXPECTED_AT_LEAST, 1))) {
+		return error;
+	}
+	if (!current_input_config) {
+		return cmd_results_new(CMD_FAILURE, "left_handed", "No input device defined.");
+	}
+	struct input_config *new_config = new_input_config(current_input_config->identifier);
+
+	if (strcasecmp(argv[0], "enabled") == 0) {
+		new_config->left_handed = 1;
+	} else if (strcasecmp(argv[0], "disabled") == 0) {
+		new_config->left_handed = 0;
+	} else {
+		return cmd_results_new(CMD_INVALID, "left_handed", "Expected 'left_handed <enabled|disabled>'");
+	}
+
+	input_cmd_apply(new_config);
+	return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}