Implement cursor event simulation with sway commands.

include/sway/commands.h

@@ -204,8 +204,9 @@ sway_cmd input_cmd_xkb_options;
 sway_cmd input_cmd_xkb_rules;
 sway_cmd input_cmd_xkb_variant;
 
-sway_cmd seat_cmd_fallback;
 sway_cmd seat_cmd_attach;
+sway_cmd seat_cmd_fallback;
+sway_cmd seat_cmd_cursor;
 
 sway_cmd cmd_ipc_cmd;
 sway_cmd cmd_ipc_events;

include/sway/input/cursor.h

@@ -30,5 +30,6 @@ struct sway_cursor {
 void sway_cursor_destroy(struct sway_cursor *cursor);
 struct sway_cursor *sway_cursor_create(struct sway_seat *seat);
 void cursor_send_pointer_motion(struct sway_cursor *cursor, uint32_t time);
+void dispatch_cursor_button(struct sway_cursor *cursor, uint32_t time_msec, uint32_t button, enum wlr_button_state state);
 
 #endif

sway/commands.c

@@ -203,6 +203,7 @@ static struct cmd_handler input_handlers[] = {
 // must be in order for the bsearch
 static struct cmd_handler seat_handlers[] = {
 	{ "attach", seat_cmd_attach },
+	{ "cursor", seat_cmd_cursor },
 	{ "fallback", seat_cmd_fallback },
 };
 

sway/commands/seat.c

@@ -40,6 +40,8 @@ struct cmd_results *cmd_seat(int argc, char **argv) {
 	struct cmd_results *res;
 	if (strcasecmp("attach", argv[1]) == 0) {
 		res = seat_cmd_attach(argc_new, argv_new);
+	} else if (strcasecmp("cursor", argv[1]) == 0) {
+		res = seat_cmd_cursor(argc_new, argv_new);
 	} else if (strcasecmp("fallback", argv[1]) == 0) {
 		res = seat_cmd_fallback(argc_new, argv_new);
 	} else {

sway/commands/seat/cursor.c

@@ -0,0 +1,83 @@
+#define _XOPEN_SOURCE 700
+#ifdef __linux__
+#include <linux/input-event-codes.h>
+#elif __FreeBSD__
+#include <dev/evdev/input-event-codes.h>
+#endif
+
+#include <strings.h>
+#include <wlr/types/wlr_cursor.h>
+#include "sway/commands.h"
+#include "sway/input/cursor.h"
+
+static struct cmd_results *press_or_release(struct sway_cursor *cursor, char *action, char *button_str);
+
+static const char *expected_syntax = "Expected 'cursor <move> <x> <y>' or "
+					"'cursor <set> <x> <y>' or "
+					"'curor <press|release> <left|right|1|2|3...>'";
+
+struct cmd_results *seat_cmd_cursor(int argc, char **argv) {
+	struct cmd_results *error = NULL;
+	if ((error = checkarg(argc, "cursor", EXPECTED_AT_LEAST, 2))) {
+		return error;
+	}
+	struct sway_seat *seat = config->handler_context.seat;
+	if (!seat) {
+		return cmd_results_new(CMD_FAILURE, "cursor", "No seat defined");
+	}
+
+	struct sway_cursor *cursor = seat->cursor;
+
+	if (strcasecmp(argv[0], "move") == 0) {
+		if (argc < 3) {
+			return cmd_results_new(CMD_INVALID, "cursor", expected_syntax);
+		}
+		int delta_x = strtol(argv[1], NULL, 10);
+		int delta_y = strtol(argv[2], NULL, 10);
+		wlr_cursor_move(cursor->cursor, NULL, delta_x, delta_y);
+		cursor_send_pointer_motion(cursor, 1);
+	} else if (strcasecmp(argv[0], "set") == 0) {
+		if (argc < 3) {
+			return cmd_results_new(CMD_INVALID, "cursor", expected_syntax);
+		}
+		// map absolute coords (0..1,0..1) to root container coords
+		float x = strtof(argv[1], NULL) / root_container.width;
+		float y = strtof(argv[2], NULL) / root_container.height;
+		wlr_cursor_warp_absolute(cursor->cursor, NULL, x, y);
+		cursor_send_pointer_motion(cursor, 0);
+	} else {
+		if (argc < 2) {
+			return cmd_results_new(CMD_INVALID, "cursor", expected_syntax);
+		}
+		if ((error = press_or_release(cursor, argv[0], argv[1]))) {
+			return error;
+		}
+	}
+
+	return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}
+
+static struct cmd_results *press_or_release(struct sway_cursor *cursor, char *action, char *button_str) {
+	enum wlr_button_state state;
+	uint32_t button;
+	if (strcasecmp(action, "press") == 0) {
+		state = WLR_BUTTON_PRESSED;
+	} else if (strcasecmp(action, "release") == 0) {
+		state = WLR_BUTTON_RELEASED;
+	} else {
+		return cmd_results_new(CMD_INVALID, "cursor", expected_syntax);
+	}
+
+	if (strcasecmp(button_str, "left") == 0) {
+		button = BTN_LEFT;
+	} else if (strcasecmp(button_str, "right") == 0) {
+		button = BTN_RIGHT;
+	} else {
+		button = strtol(button_str, NULL, 10);
+		if (button == 0) {
+			return cmd_results_new(CMD_INVALID, "cursor", expected_syntax);
+		}
+	}
+	dispatch_cursor_button(cursor, 1, button, state);
+	return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}

sway/input/cursor.c

@@ -166,7 +166,7 @@ static void handle_cursor_motion_absolute(
 	cursor_send_pointer_motion(cursor, event->time_msec);
 }
 
-static void dispatch_cursor_button(struct sway_cursor *cursor,
+void dispatch_cursor_button(struct sway_cursor *cursor,
 		uint32_t time_msec, uint32_t button, enum wlr_button_state state) {
 	struct wlr_surface *surface = NULL;
 	double sx, sy;

sway/meson.build

@@ -47,6 +47,7 @@ sway_sources = files(
 	'commands/resize.c',
 	'commands/seat.c',
 	'commands/seat/attach.c',
+	'commands/seat/cursor.c',
 	'commands/seat/fallback.c',
 	'commands/set.c',
 	'commands/split.c',