config/input: Implement libinput clickfinger_button_map option support.

include/sway/commands.h

@@ -249,6 +249,7 @@ sway_cmd input_cmd_seat;
 sway_cmd input_cmd_accel_profile;
 sway_cmd input_cmd_calibration_matrix;
 sway_cmd input_cmd_click_method;
+sway_cmd input_cmd_clickfinger_button_map;
 sway_cmd input_cmd_drag;
 sway_cmd input_cmd_drag_lock;
 sway_cmd input_cmd_dwt;

include/sway/config.h

@@ -148,6 +148,7 @@ struct input_config {
 	int accel_profile;
 	struct calibration_matrix calibration_matrix;
 	int click_method;
+	int clickfinger_button_map;
 	int drag;
 	int drag_lock;
 	int dwt;

sway/commands/input.c

@@ -11,6 +11,7 @@ static const struct cmd_handler input_handlers[] = {
 	{ "accel_profile", input_cmd_accel_profile },
 	{ "calibration_matrix", input_cmd_calibration_matrix },
 	{ "click_method", input_cmd_click_method },
+	{ "clickfinger_button_map", input_cmd_clickfinger_button_map },
 	{ "drag", input_cmd_drag },
 	{ "drag_lock", input_cmd_drag_lock },
 	{ "dwt", input_cmd_dwt },

sway/commands/input/clickfinger_button_map.c

@@ -0,0 +1,27 @@
+#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_clickfinger_button_map(int argc, char **argv) {
+	struct cmd_results *error = NULL;
+	if ((error = checkarg(argc, "clickfinger_button_map", 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], "lrm") == 0) {
+		ic->clickfinger_button_map = LIBINPUT_CONFIG_CLICKFINGER_MAP_LRM;
+	} else if (strcasecmp(argv[0], "lmr") == 0) {
+		ic->clickfinger_button_map = LIBINPUT_CONFIG_CLICKFINGER_MAP_LMR;
+	} else {
+		return cmd_results_new(CMD_INVALID,
+			"Expected 'clickfinger_button_map <lrm|lmr>'");
+	}
+
+	return cmd_results_new(CMD_SUCCESS, NULL);
+}

sway/config/input.c

@@ -27,6 +27,7 @@ struct input_config *new_input_config(const char* identifier) {
 	input->dwtp = INT_MIN;
 	input->send_events = INT_MIN;
 	input->click_method = INT_MIN;
+	input->clickfinger_button_map = INT_MIN;
 	input->middle_emulation = INT_MIN;
 	input->natural_scroll = INT_MIN;
 	input->accel_profile = INT_MIN;
@@ -54,6 +55,9 @@ void merge_input_config(struct input_config *dst, struct input_config *src) {
 	if (src->click_method != INT_MIN) {
 		dst->click_method = src->click_method;
 	}
+	if (src->clickfinger_button_map != INT_MIN) {
+		dst->clickfinger_button_map = src->clickfinger_button_map;
+	}
 	if (src->drag != INT_MIN) {
 		dst->drag = src->drag;
 	}

sway/input/libinput.c

@@ -132,6 +132,16 @@ static bool set_click_method(struct libinput_device *device,
 	return true;
 }
 
+static bool set_clickfinger_button_map(struct libinput_device *device,
+		enum libinput_config_clickfinger_button_map map) {
+	if (libinput_device_config_click_get_clickfinger_button_map(device) == map) {
+		return false;
+	}
+	sway_log(SWAY_DEBUG, "clickfinger_set_button_map(%d)", map);
+	log_status(libinput_device_config_click_set_clickfinger_button_map(device, map));
+	return true;
+}
+
 static bool set_middle_emulation(struct libinput_device *dev,
 		enum libinput_config_middle_emulation_state mid) {
 	if (!libinput_device_config_middle_emulation_is_available(dev) ||
@@ -281,6 +291,9 @@ bool sway_input_configure_libinput_device(struct sway_input_device *input_device
 	if (ic->click_method != INT_MIN) {
 		changed |= set_click_method(device, ic->click_method);
 	}
+	if (ic->clickfinger_button_map != INT_MIN) {
+		changed |= set_clickfinger_button_map(device, ic->clickfinger_button_map);
+	}
 	if (ic->middle_emulation != INT_MIN) {
 		changed |= set_middle_emulation(device, ic->middle_emulation);
 	}
@@ -356,6 +369,8 @@ void sway_input_reset_libinput_device(struct sway_input_device *input_device) {
 		libinput_device_config_left_handed_get_default(device));
 	changed |= set_click_method(device,
 		libinput_device_config_click_get_default_method(device));
+	changed |= set_clickfinger_button_map(device,
+		libinput_device_config_click_get_default_clickfinger_button_map(device));
 	changed |= set_middle_emulation(device,
 		libinput_device_config_middle_emulation_get_default_enabled(device));
 	changed |= set_scroll_method(device,

sway/ipc-json.c

@@ -990,6 +990,18 @@ static json_object *describe_libinput_device(struct libinput_device *device) {
 		}
 		json_object_object_add(object, "click_method",
 				json_object_new_string(click_method));
+
+		const char *button_map = "unknown";
+		switch (libinput_device_config_click_get_clickfinger_button_map(device)) {
+		case LIBINPUT_CONFIG_CLICKFINGER_MAP_LRM:
+			button_map = "lrm";
+			break;
+		case LIBINPUT_CONFIG_CLICKFINGER_MAP_LMR:
+			button_map = "lmr";
+			break;
+		}
+		json_object_object_add(object, "clickfinger_button_map",
+				json_object_new_string(button_map));
 	}
 
 	if (libinput_device_config_middle_emulation_is_available(device)) {
@@ -1107,9 +1119,9 @@ json_object *ipc_json_describe_input(struct sway_input_device *device) {
 		struct xkb_keymap *keymap = keyboard->keymap;
 		struct xkb_state *state = keyboard->xkb_state;
 
-		json_object_object_add(object, "repeat_delay", 
+		json_object_object_add(object, "repeat_delay",
 			json_object_new_int(keyboard->repeat_info.delay));
-		json_object_object_add(object, "repeat_rate", 
+		json_object_object_add(object, "repeat_rate",
 			json_object_new_int(keyboard->repeat_info.rate));
 
 		json_object *layouts_arr = json_object_new_array();

sway/meson.build

@@ -154,6 +154,7 @@ sway_sources = files(
 	'commands/input/accel_profile.c',
 	'commands/input/calibration_matrix.c',
 	'commands/input/click_method.c',
+	'commands/input/clickfinger_button_map.c',
 	'commands/input/drag.c',
 	'commands/input/drag_lock.c',
 	'commands/input/dwt.c',

sway/sway-input.5.scd

@@ -143,6 +143,12 @@ The following commands may only be used in the configuration file.
 *input* <identifier> click_method none|button_areas|clickfinger
 	Changes the click method for the specified device.
 
+*input* <identifier> clickfinger_button_map lrm|lmr
+	Specifies which button mapping to use for clickfinger. _lrm_ treats 1 finger as
+	left click, 2 fingers as right click, and 3 fingers as middle click. _lmr_
+	treats 1 finger as left click, 2 fingers as middle click, and 3 fingers as
+	right click.
+
 *input* <identifier> drag enabled|disabled
 	Enables or disables tap-and-drag for specified input device.
 

sway/sway-ipc.7.scd

@@ -1168,7 +1168,7 @@ following properties will be included for devices that support them:
 :  Whether tap to click is enabled. It can be _enabled_ or _disabled_
 |- tap_button_map
 :  string
-:  The finger to button mapping in use. It can be _lmr_ or _lrm_
+:  The finger to button mapping in use for tapping. It can be _lmr_ or _lrm_
 |- tap_drag
 :  string
 :  Whether tap-and-drag is enabled. It can be _enabled_ or _disabled_
@@ -1190,6 +1190,9 @@ following properties will be included for devices that support them:
 |- click_method
 :  string
 :  The click method in use. It can be _none_, _button_areas_, or _clickfinger_
+|- click_button_map
+:  string
+:  The finger to button mapping in use for clickfinger. It can be _lmr_ or _lrm_
 |- middle_emulation
 :  string
 :  Whether middle emulation is enabled. It can be _enabled_ or _disabled_