virtual-pointer: Add support for the wlr-virtual-pointer-unstable-v1

examples/meson.build

@@ -143,6 +143,11 @@ clients = {
 		'dep': [wlroots],
 		'proto': ['wlr-foreign-toplevel-management-unstable-v1'],
 	},
+	'virtual-pointer': {
+		'src': 'virtual-pointer.c',
+		'dep': wlroots,
+		'proto': ['wlr-virtual-pointer-unstable-v1'],
+	},
 }
 
 foreach name, info : compositors

examples/virtual-pointer.c

@@ -0,0 +1,138 @@
+/*
+ * Copyright © 2019 Josef Gajdusek
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#define _POSIX_C_SOURCE 200112L
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wayland-client-protocol.h>
+#include "wlr-virtual-pointer-unstable-v1-client-protocol.h"
+
+static struct wl_seat *seat = NULL;
+static struct zwlr_virtual_pointer_manager_v1 *pointer_manager = NULL;
+
+static void handle_global(void *data, struct wl_registry *registry,
+		uint32_t name, const char *interface, uint32_t version) {
+	if (strcmp(interface, wl_seat_interface.name) == 0) {
+		seat = wl_registry_bind(registry, name,
+			&wl_seat_interface, version);
+	} else if (strcmp(interface,
+			zwlr_virtual_pointer_manager_v1_interface.name) == 0) {
+		pointer_manager = wl_registry_bind(registry, name,
+			&zwlr_virtual_pointer_manager_v1_interface, 1);
+	}
+}
+
+static void handle_global_remove(void *data, struct wl_registry *registry,
+		uint32_t name) {
+	// Who cares?
+}
+
+static const struct wl_registry_listener registry_listener = {
+	.global = handle_global,
+	.global_remove = handle_global_remove,
+};
+
+int main(int argc, char *argv[]) {
+	if (argc < 2) {
+		fprintf(stderr, "Usage: ./virtual-pointer <subcommand>\n");
+		return EXIT_FAILURE;
+	}
+	struct wl_display * display = wl_display_connect(NULL);
+	if (display == NULL) {
+		fprintf(stderr, "failed to create display: %m\n");
+		return EXIT_FAILURE;
+	}
+
+	struct wl_registry *registry = wl_display_get_registry(display);
+	wl_registry_add_listener(registry, &registry_listener, NULL);
+	wl_display_dispatch(display);
+	wl_display_roundtrip(display);
+
+	if (pointer_manager == NULL) {
+		fprintf(stderr, "compositor does not support wlr-virtual-pointer-unstable-v1\n");
+		return EXIT_FAILURE;
+	}
+
+	struct zwlr_virtual_pointer_v1 *pointer =
+		zwlr_virtual_pointer_manager_v1_create_virtual_pointer(
+			pointer_manager, seat);
+
+	const char *cmd = argv[1];
+	if (strcmp(cmd, "motion") == 0) {
+		if (argc < 4) {
+			fprintf(stderr, "Usage: ./virtual-pointer motion <dx> <dy>\n");
+			return EXIT_FAILURE;
+		}
+		wl_fixed_t dx = wl_fixed_from_double(atof(argv[2]));
+		wl_fixed_t dy = wl_fixed_from_double(atof(argv[3]));
+		zwlr_virtual_pointer_v1_motion(pointer, 0, dx, dy);
+	} else if (strcmp(cmd, "absolute") == 0) {
+		if (argc < 6) {
+			fprintf(stderr, "Usage: ./virtual-pointer absolute <x> <y> <x_extent> <y_extent>\n");
+			return EXIT_FAILURE;
+		}
+		uint32_t x = atoi(argv[2]);
+		uint32_t y = atoi(argv[3]);
+		uint32_t x_extent = atoi(argv[4]);
+		uint32_t y_extent = atoi(argv[5]);
+		zwlr_virtual_pointer_v1_motion_absolute(pointer, 0, x, y, x_extent, y_extent);
+	} else if (strcmp(cmd, "button") == 0) {
+		if (argc < 4) {
+			fprintf(stderr, "Usage: ./virtual-pointer button <button> press|release\n");
+			return EXIT_FAILURE;
+		}
+		uint32_t button = atoi(argv[2]);
+		bool press = !!strcmp(argv[3], "release");
+		zwlr_virtual_pointer_v1_button(pointer, 0, button, press);
+	} else if (strcmp(cmd, "axis") == 0) {
+		if (argc < 4) {
+			fprintf(stderr, "Usage: ./virtual-pointer axis <axis> <value>\n");
+			return EXIT_FAILURE;
+		}
+		uint32_t axis = atoi(argv[2]);
+		wl_fixed_t value = wl_fixed_from_double(atof(argv[3]));
+		zwlr_virtual_pointer_v1_axis(pointer, 0, axis, value);
+		zwlr_virtual_pointer_v1_axis_stop(pointer, 0, axis);
+	} else if (strcmp(cmd, "axis_discrete") == 0) {
+		if (argc < 5) {
+			fprintf(stderr, "Usage: ./virtual-pointer axis <axis> <value> <value_discrete>\n");
+			return EXIT_FAILURE;
+		}
+		uint32_t axis = atoi(argv[2]);
+		wl_fixed_t value = wl_fixed_from_double(atof(argv[3]));
+		uint32_t discrete = atoi(argv[4]);
+		zwlr_virtual_pointer_v1_axis_discrete(pointer, 0, axis, value, discrete);
+		zwlr_virtual_pointer_v1_axis_stop(pointer, 0, axis);
+	} else {
+		fprintf(stderr, "Invalid subcommand\n");
+		return EXIT_FAILURE;
+	}
+
+	zwlr_virtual_pointer_v1_frame(pointer);
+	zwlr_virtual_pointer_v1_destroy(pointer);
+	wl_display_dispatch(display);
+
+	return EXIT_SUCCESS;
+}