swayfx/sway/commands/input/scroll_method.c

#include <string.h>
#include <strings.h>
#include "sway/config.h"
#include "sway/commands.h"
#include "sway/input/input-manager.h"

struct cmd_results *input_cmd_scroll_method(int argc, char **argv) {
	struct cmd_results *error = NULL;
	if ((error = checkarg(argc, "scroll_method", 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.");
	}

	if (strcasecmp(argv[0], "none") == 0) {
		ic->scroll_method = LIBINPUT_CONFIG_SCROLL_NO_SCROLL;
	} else if (strcasecmp(argv[0], "two_finger") == 0) {
		ic->scroll_method = LIBINPUT_CONFIG_SCROLL_2FG;
	} else if (strcasecmp(argv[0], "edge") == 0) {
		ic->scroll_method = LIBINPUT_CONFIG_SCROLL_EDGE;
	} else if (strcasecmp(argv[0], "on_button_down") == 0) {
		ic->scroll_method = LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN;
	} else {
		return cmd_results_new(CMD_INVALID,
			"Expected 'scroll_method <none|two_finger|edge|on_button_down>'");
	}

	return cmd_results_new(CMD_SUCCESS, NULL);
}