convoluted tablet code

types/meson.build

@@ -46,6 +46,7 @@ lib_wlr_types = static_library(
 		'wlr_tablet_v2.c',
 		'wlr_tablet_pad.c',
 		'wlr_tablet_tool.c',
+		'wlr_tablet_tool_tool.c',
 		'wlr_touch.c',
 		'wlr_virtual_keyboard_v1.c',
 		'wlr_wl_shell.c',

types/wlr_tablet_tool_tool.c

@@ -0,0 +1,16 @@
+#include <stdlib.h>
+#include <string.h>
+#include <wayland-server.h>
+#include <wlr/interfaces/wlr_tablet_tool.h>
+#include <wlr/types/wlr_tablet_tool.h>
+
+void wlr_tablet_tool_tool_init(struct wlr_tablet_tool_tool *tool) {
+	// Intentionaly empty (for now)
+}
+
+void wlr_tablet_tool_tool_destroy(struct wlr_tablet_tool_tool *tool) {
+	if (!tool) {
+		return;
+	}
+	free(tool);
+}

types/wlr_tablet_v2.c

@@ -3,6 +3,8 @@
 #endif
 
 #include <assert.h>
+#include <libinput.h>
+#include <string.h>
 #include <stdlib.h>
 #include <wayland-server.h>
 #include <wlr/config.h>
@@ -13,14 +15,16 @@
 
 struct wlr_tablet_manager_v2 {
 	struct wl_global *wl_global;
-	struct wl_list clients; // wlr_tablet_client_v2::link
+	struct wl_list tablets; // wlr_tablet_v2::link
+	struct wl_list pads; // wlr_tablet_pad_v2::link
+	struct wl_list clients; // wlr_tablet_manager_client_v2::link
 
 	struct wl_listener display_destroy;
 
 	void *data;
 };
 
-struct wlr_tablet_client_v2 {
+struct wlr_tablet_manager_client_v2 {
 	struct wl_list link;
 	struct wl_client *client;
 	struct wl_resource *resource;
@@ -34,21 +38,227 @@ struct wlr_tablet_seat_v2 {
 	struct wl_list link;
 	struct wl_resource *resource;
 
-	struct wlr_tablet_client_v2 *client;
+	struct wlr_tablet_manager_client_v2 *client;
 	struct wlr_seat_client *seat;
 
 	struct wl_listener seat_destroy;
 
 	struct wl_list tools;
+	struct wl_list tablets;
+	struct wl_list pads; //wlr_tablet_pad_client_v2::link
 };
 
 struct wlr_tablet_v2 {
 	struct wl_list link;
-	struct wl_resource *resource;
+	struct wl_list resources;
+
+	char *name;
+	struct wl_list paths; // wlr_tablet_path::link
+	// USB vendor/product id
+	unsigned int vid;
+	unsigned int pid;
 };
 
+struct wlr_tablet_pad_v2 {
+	struct wl_list link;
+	struct wl_list resources;
+
+	struct wlr_tablet_v2 *tablet;
+
+	struct wl_list groups; // wlr_tablet_pad_group::link
+	struct wl_list paths; // wlr_tablet_path::link
+	size_t button_count;
+	size_t ring_count;
+	size_t strip_count;
+};
+
+struct wlr_tablet_tool_v2 {
+	struct wl_list link;
+
+	enum zwp_tablet_tool_v2_type type;
+	uint64_t hardware_serial;
+	uint64_t hardware_wacom;
+
+	// Capabilities
+	bool tilt;
+	bool pressure;
+	bool distance;
+	bool rotation;
+	bool slider;
+	bool wheel;
+};
+
+struct wlr_tablet_tool_client_v2 {
+	struct wl_list link;
+	struct wl_resource *resource;
+
+	struct wlr_surface *cursor;
+	struct wl_listener cursor_destroy;
+};
+
+struct wlr_tablet_pad_client_v2 {
+	struct wl_list link;
+	struct wlr_tablet_pad_v2 *pad;
+	struct wl_resource *resource;
+
+	size_t button_count;
+
+	size_t ring_cout;
+	struct wl_resource **rings;
+
+	size_t strip_cout;
+	struct wl_resource **strips;
+};
+
+struct wlr_tablet_pad_group_v2 {
+	struct wl_list link;
+	struct wl_list resources;
+
+	struct wlr_tablet_pad_v2 *pad;
+
+	size_t button_count;
+	unsigned int *buttons;
+	size_t strip_count;
+	unsigned int *strips;
+	size_t ring_count;
+	unsigned int *rings;
+
+	unsigned int mode_count;
+};
+
+struct wlr_tablet_path {
+	struct wl_list link;
+	char *path;
+};
+
+void add_tablet_path(struct wl_list *list, const char *path) {
+	struct wlr_tablet_path *tablet_path = calloc(1, sizeof(struct wlr_tablet_path));
+
+	if (!tablet_path) {
+		return;
+	}
+
+	tablet_path->path = strdup(path);
+	wl_list_insert(list, &tablet_path->link);
+}
+
+void wlr_tablet_destroy(struct wlr_tablet_v2 *tablet) {
+	wl_list_remove(&tablet->link);
+	free(tablet->name);
+
+	struct wlr_tablet_path *tmp;
+	struct wlr_tablet_path *pos;
+	wl_list_for_each_safe(pos, tmp, &tablet->paths, link) {
+		free(pos->path);
+		wl_list_remove(&pos->link);
+		free(pos);
+	}
+
+	free(tablet);
+}
+
+static void add_pad_group_from_libinput(struct wlr_tablet_pad_v2 *pad,
+		struct libinput_device *device, unsigned int index) {
+	struct libinput_tablet_pad_mode_group *li_group =
+		libinput_device_tablet_pad_get_mode_group(device, index);
+	struct wlr_tablet_pad_group_v2 *group =
+		calloc(1, sizeof(struct wlr_tablet_pad_group_v2));
+	if (!group) {
+		return;
+	}
+
+	for (size_t i = 0; i < pad->ring_count; ++i) {
+		if (libinput_tablet_pad_mode_group_has_ring(li_group, i)) {
+			++group->ring_count;
+		}
+	}
+	group->rings = calloc(sizeof(int), group->ring_count);
+	size_t ring = 0;
+	for (size_t i = 0; i < pad->ring_count; ++i) {
+		if (libinput_tablet_pad_mode_group_has_ring(li_group, i)) {
+			group->rings[ring++] = i;
+		}
+	}
+
+	for (size_t i = 0; i < pad->strip_count; ++i) {
+		if (libinput_tablet_pad_mode_group_has_strip(li_group, i)) {
+			++group->strip_count;
+		}
+	}
+	group->strips = calloc(sizeof(int), group->strip_count);
+	size_t strip = 0;
+	for (size_t i = 0; i < pad->strip_count; ++i) {
+		if (libinput_tablet_pad_mode_group_has_strip(li_group, i)) {
+			group->strips[strip++] = i;
+		}
+	}
+
+	for (size_t i = 0; i < pad->button_count; ++i) {
+		if (libinput_tablet_pad_mode_group_has_button(li_group, i)) {
+			++group->button_count;
+		}
+	}
+	group->buttons = calloc(sizeof(int), group->button_count);
+	size_t button = 0;
+	for (size_t i = 0; i < pad->button_count; ++i) {
+		if (libinput_tablet_pad_mode_group_has_button(li_group, i)) {
+			group->buttons[button++] = i;
+		}
+	}
+
+	group->mode_count = libinput_tablet_pad_mode_group_get_num_modes(li_group);
+	wl_list_insert(&pad->groups, &group->link);
+}
+
+struct wlr_tablet_pad_v2 *tablet_pad_from_libinput(struct wlr_tablet_manager_v2 *manager,
+		struct libinput_device *device) {
+	struct wlr_tablet_pad_v2 *pad = calloc(1, sizeof(struct wlr_tablet_pad_v2));
+	if (!pad) {
+		return NULL;
+	}
+
+	pad->button_count = libinput_device_tablet_pad_get_num_buttons(device);
+	pad->ring_count = libinput_device_tablet_pad_get_num_rings(device);
+	pad->strip_count = libinput_device_tablet_pad_get_num_strips(device);
+
+	struct udev_device *udev = libinput_device_get_udev_device(device);
+	add_tablet_path(&pad->paths, udev_device_get_syspath(udev));
+
+	int groups = libinput_device_tablet_pad_get_num_mode_groups(device);
+	for (int i = 0; i < groups; ++i) {
+		add_pad_group_from_libinput(pad, device, i);
+	}
+
+	wl_list_insert(&manager->pads, &pad->link);
+	return pad;
+}
+
+struct wlr_tablet_v2 *tablet_from_libinput(struct wlr_tablet_manager_v2 *manager,
+		struct libinput_device *device) {
+	struct wlr_tablet_v2 *tablet = calloc(1, sizeof(struct wlr_tablet_v2));
+	if (!tablet) {
+		return NULL;
+	}
+
+	wl_list_init(&tablet->resources);
+
+	tablet->vid = libinput_device_get_id_vendor(device);
+	tablet->pid = libinput_device_get_id_product(device);
+	tablet->name = strdup(libinput_device_get_name(device));
+	if (!tablet->name) {
+		free(tablet);
+		return NULL;
+	}
+
+	struct udev_device *udev = libinput_device_get_udev_device(device);
+	add_tablet_path(&tablet->paths, udev_device_get_syspath(udev));
+
+	wl_list_insert(&manager->tablets, &tablet->link);
+	return tablet;
+}
+
 void wlr_tablet_v2_destroy(struct wlr_tablet_manager_v2 *manager);
-static struct wlr_tablet_client_v2 *tablet_client_from_resource(struct wl_resource *resource);
+static struct wlr_tablet_manager_client_v2 *tablet_manager_client_from_resource(struct wl_resource *resource);
 
 static void tablet_seat_destroy(struct wl_client *client,
 		struct wl_resource *resource) {
@@ -96,7 +306,7 @@ static void tablet_manager_destroy(struct wl_client *client,
 static void get_tablet_seat(struct wl_client *wl_client, struct wl_resource *resource,
 		uint32_t id, struct wl_resource *seat_resource)
 {
-	struct wlr_tablet_client_v2 *manager = tablet_client_from_resource(resource);
+	struct wlr_tablet_manager_client_v2 *manager = tablet_manager_client_from_resource(resource);
 	struct wlr_seat_client *seat = wlr_seat_client_from_resource(seat_resource);
 
 	struct wlr_tablet_seat_v2 *tablet_seat =
@@ -131,7 +341,7 @@ static struct zwp_tablet_manager_v2_interface manager_impl = {
 	.destroy = tablet_manager_destroy,
 };
 
-static struct wlr_tablet_client_v2 *tablet_client_from_resource (
+static struct wlr_tablet_manager_client_v2 *tablet_manager_client_from_resource (
 		struct wl_resource *resource) {
 	assert(wl_resource_instance_of(resource, &zwp_tablet_manager_v2_interface,
 		&manager_impl));
@@ -139,7 +349,7 @@ static struct wlr_tablet_client_v2 *tablet_client_from_resource (
 }
 
 static void wlr_tablet_manager_v2_destroy(struct wl_resource *resource) {
-	struct wlr_tablet_client_v2 *client = tablet_client_from_resource(resource);
+	struct wlr_tablet_manager_client_v2 *client = tablet_manager_client_from_resource(resource);
 
 	client->resource = NULL;
 	/* We can't just destroy the struct, because we may need to iterate it
@@ -153,8 +363,8 @@ static void tablet_v2_bind(struct wl_client *wl_client, void *data,
 	struct wlr_tablet_manager_v2 *manager = data;
 	assert(wl_client && manager);
 
-	struct wlr_tablet_client_v2 *client =
+	struct wlr_tablet_manager_client_v2 *client =
-		calloc(1, sizeof(struct wlr_tablet_client_v2));
+		calloc(1, sizeof(struct wlr_tablet_manager_client_v2));
 	if (client == NULL) {
 		wl_client_post_no_memory(wl_client);
 		return;
@@ -184,8 +394,8 @@ static void handle_display_destroy(struct wl_listener *listener, void *data) {
 }
 
 void wlr_tablet_v2_destroy(struct wlr_tablet_manager_v2 *manager) {
-	struct wlr_tablet_client_v2 *tmp;
+	struct wlr_tablet_manager_client_v2 *tmp;
-	struct wlr_tablet_client_v2 *pos;
+	struct wlr_tablet_manager_client_v2 *pos;
 
 	wl_list_for_each_safe(pos, tmp, &manager->clients, link) {
 		wl_resource_destroy(pos->resource);