relative_pointer: create skeleton and build

Add protocol, header and type files to build. Create skeleton structs,
creator and destroyer, and define implementations.

include/rootston/desktop.h

@@ -17,6 +17,7 @@
 #include <wlr/types/wlr_output.h>
 #include <wlr/types/wlr_presentation_time.h>
 #include <wlr/types/wlr_gtk_primary_selection.h>
+#include <wlr/types/wlr_relative_pointer_v1.h>
 #include <wlr/types/wlr_screencopy_v1.h>
 #include <wlr/types/wlr_screenshooter.h>
 #include <wlr/types/wlr_text_input_v3.h>
@@ -65,6 +66,7 @@ struct roots_desktop {
 	struct wlr_pointer_constraints_v1 *pointer_constraints;
 	struct wlr_presentation *presentation;
 	struct wlr_foreign_toplevel_manager_v1 *foreign_toplevel_manager_v1;
+	struct wlr_relative_pointer_manager_v1 *relative_pointer_manager;
 
 	struct wl_listener new_output;
 	struct wl_listener layout_change;

include/wlr/types/wlr_relative_pointer_v1.h

@@ -0,0 +1,45 @@
+/*
+ * This an unstable interface of wlroots. No guarantees are made regarding the
+ * future consistency of this API.
+ */
+#ifndef WLR_USE_UNSTABLE
+#error "Add -DWLR_USE_UNSTABLE to enable unstable wlroots features"
+#endif
+
+#ifndef WLR_TYPES_WLR_RELATIVE_POINTER_V1_H
+#define WLR_TYPES_WLR_RELATIVE_POINTER_V1_H
+
+#include <wayland-server.h>
+
+
+/* This protocol specifies a set of interfaces used for making clients able to
+ * receive relative pointer events not obstructed by barriers (such as the
+ * monitor edge or other pointer barriers).
+ */
+
+struct wlr_relative_pointer_manager_v1 {
+	struct wl_list resources;
+	struct wl_global *global;
+
+	struct {
+		struct wl_signal destroy;
+		struct wl_signal get_relative_pointer;
+	} requests;
+
+	void *data;
+};
+
+struct wlr_relative_pointer_v1 {
+	struct wl_resource *resource;
+
+	struct {
+		struct wl_signal destroy;
+	} destroy;
+
+	void *data;
+};
+
+struct wlr_relative_pointer_manager_v1 *wlr_relative_pointer_v1_create(struct wl_display *display);
+void wlr_relative_pointer_v1_destroy(struct wlr_relative_pointer_manager_v1 *relative_pointer_manager);
+
+#endif

protocol/meson.build

@@ -20,6 +20,7 @@ protocols = [
 	[wl_protocol_dir, 'unstable/xdg-output/xdg-output-unstable-v1.xml'],
 	[wl_protocol_dir, 'unstable/xdg-shell/xdg-shell-unstable-v6.xml'],
 	[wl_protocol_dir, 'unstable/pointer-constraints/pointer-constraints-unstable-v1.xml'],
+	[wl_protocol_dir, 'unstable/relative-pointer/relative-pointer-unstable-v1.xml'],
 	'gamma-control.xml',
 	'gtk-primary-selection.xml',
 	'idle.xml',
@@ -42,6 +43,7 @@ client_protocols = [
 	[wl_protocol_dir, 'unstable/xdg-decoration/xdg-decoration-unstable-v1.xml'],
 	[wl_protocol_dir, 'unstable/xdg-shell/xdg-shell-unstable-v6.xml'],
 	[wl_protocol_dir, 'unstable/pointer-constraints/pointer-constraints-unstable-v1.xml'],
+	[wl_protocol_dir, 'unstable/relative-pointer/relative-pointer-unstable-v1.xml'],
 	'idle.xml',
 	'input-method-unstable-v2.xml',
 	'screenshooter.xml',

rootston/desktop.c

@@ -1081,6 +1081,8 @@ struct roots_desktop *desktop_create(struct roots_server *server,
 		wlr_presentation_create(server->wl_display, server->backend);
 	desktop->foreign_toplevel_manager_v1 =
 		wlr_foreign_toplevel_manager_v1_create(server->wl_display);
+	desktop->relative_pointer_manager =
+		wlr_relative_pointer_v1_create(server->wl_display);
 
 	return desktop;
 }

types/meson.build

@@ -51,6 +51,7 @@ lib_wlr_types = static_library(
 		'wlr_primary_selection.c',
 		'wlr_region.c',
 		'wlr_screencopy_v1.c',
+		'wlr_relative_pointer_v1.c',
 		'wlr_screenshooter.c',
 		'wlr_server_decoration.c',
 		'wlr_surface.c',

types/wlr_relative_pointer_v1.c

@@ -0,0 +1,126 @@
+#include <stdlib.h>
+#include <wlr/util/log.h>
+#include <util/signal.h>
+#include <wlr/types/wlr_relative_pointer_v1.h>
+#include "wayland-util.h"
+#include "wayland-server.h"
+#include "relative-pointer-unstable-v1-protocol.h"
+
+static const struct zwp_relative_pointer_manager_v1_interface relative_pointer_manager_v1_impl;
+static const struct zwp_relative_pointer_v1_interface relative_pointer_v1_impl;
+
+
+/* Callback functions
+ */
+
+static void relative_pointer_manager_v1_handle_destroy(struct wl_client *client,
+		struct wl_resource *resource)
+{
+	wlr_log(WLR_DEBUG, "relative_pointer_manager_v1_handle_destroy called");
+}
+
+
+static void relative_pointer_manager_v1_handle_get_relative_pointer(struct wl_client *client,
+		struct wl_resource *resource, uint32_t id, struct wl_resource *pointer)
+{
+	wlr_log(WLR_DEBUG, "relative_pointer_manager_v1_handle_get_relative_pointer called");
+}
+
+
+static void relative_pointer_v1_handle_destroy(struct wl_client *client,
+		struct wl_resource *resource)
+{
+	wlr_log(WLR_DEBUG, "relative_pointer_v1_handle_destroy called");
+}
+
+
+static void relative_pointer_manager_v1_handle_resource_destroy(struct wl_resource *resource)
+{
+	wl_list_remove(wl_resource_get_link(resource));
+	wlr_log(WLR_DEBUG, "relative_pointer_manager_v1_handle_resource_destroy called");
+}
+
+
+static void relative_pointer_manager_bind(struct wl_client *wl_client, void *data,
+		uint32_t version, uint32_t id)
+{
+	struct wlr_relative_pointer_manager_v1 *relative_pointer_manager = data;
+
+	struct wl_resource *wl_resource = wl_resource_create(wl_client,
+		&zwp_relative_pointer_manager_v1_interface, version, id);
+
+	if (wl_resource == NULL) {
+		wl_client_post_no_memory(wl_client);
+		return;
+	}
+
+	wl_list_insert(&relative_pointer_manager->resources, wl_resource_get_link(wl_resource));
+
+	wl_resource_set_implementation(wl_resource, &relative_pointer_manager_v1_impl,
+		relative_pointer_manager, relative_pointer_manager_v1_handle_resource_destroy);
+
+	wlr_log(WLR_DEBUG, "relative_pointer_manager bound");
+}
+
+
+/* Implementations
+ */
+
+static const struct zwp_relative_pointer_manager_v1_interface relative_pointer_manager_v1_impl = {
+	.destroy = relative_pointer_manager_v1_handle_destroy,
+	.get_relative_pointer = relative_pointer_manager_v1_handle_get_relative_pointer,
+};
+
+
+static const struct zwp_relative_pointer_v1_interface relative_pointer_v1_impl = {
+	.destroy = relative_pointer_v1_handle_destroy,
+};
+
+
+/* Public functions
+ */
+
+struct wlr_relative_pointer_manager_v1 *wlr_relative_pointer_v1_create(struct wl_display *display)
+{
+	struct wlr_relative_pointer_manager_v1 *relative_pointer_manager =
+		calloc(1, sizeof(struct wlr_relative_pointer_manager_v1));
+
+	if (relative_pointer_manager == NULL) {
+		return NULL;
+	}
+
+	wl_list_init(&relative_pointer_manager->resources);
+
+	wl_signal_init(&relative_pointer_manager->requests.destroy);
+	wl_signal_init(&relative_pointer_manager->requests.get_relative_pointer);
+
+	relative_pointer_manager->global = wl_global_create(display,
+		&zwp_relative_pointer_manager_v1_interface, 1,
+		relative_pointer_manager, relative_pointer_manager_bind);
+
+	if (relative_pointer_manager->global == NULL) {
+		free(relative_pointer_manager);
+		return NULL;
+	}
+
+	wlr_log(WLR_DEBUG, "relative_pointer_v1 manager created");
+
+	return relative_pointer_manager;
+}
+
+
+void wlr_relative_pointer_v1_destroy(struct wlr_relative_pointer_manager_v1 *relative_pointer_manager)
+{
+	if (relative_pointer_manager == NULL) {
+		return;
+	}
+
+	struct wl_resource *resource;
+	struct wl_resource *tmp_resource;
+	wl_resource_for_each_safe(resource, tmp_resource, &relative_pointer_manager->resources) {
+		wl_resource_destroy(resource);
+	}
+
+	wl_global_destroy(relative_pointer_manager->global);
+	free(relative_pointer_manager);
+}