wlroots/types/wlr_seat.c

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C
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#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <stdlib.h>
#include <string.h>
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#include <time.h>
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#include <wayland-server.h>
#include <wlr/types/wlr_seat.h>
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#include <wlr/types/wlr_input_device.h>
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#include <wlr/util/log.h>
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#include <wlr/types/wlr_data_device.h>
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static void resource_destroy(struct wl_client *client,
struct wl_resource *resource) {
wl_resource_destroy(resource);
}
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static void pointer_send_frame(struct wl_resource *resource) {
if (wl_resource_get_version(resource) >=
WL_POINTER_FRAME_SINCE_VERSION) {
wl_pointer_send_frame(resource);
}
}
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static void wl_pointer_set_cursor(struct wl_client *client,
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struct wl_resource *pointer_resource, uint32_t serial,
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struct wl_resource *surface_resource,
int32_t hotspot_x, int32_t hotspot_y) {
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struct wlr_seat_client *seat_client =
wl_resource_get_user_data(pointer_resource);
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struct wlr_surface *surface = NULL;
if (surface_resource != NULL) {
surface = wl_resource_get_user_data(surface_resource);
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if (wlr_surface_set_role(surface, "wl_pointer-cursor", surface_resource,
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WL_POINTER_ERROR_ROLE) < 0) {
return;
}
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}
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struct wlr_seat_pointer_request_set_cursor_event *event =
calloc(1, sizeof(struct wlr_seat_pointer_request_set_cursor_event));
if (event == NULL) {
return;
}
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event->seat_client = seat_client;
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event->surface = surface;
event->serial = serial;
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event->hotspot_x = hotspot_x;
event->hotspot_y = hotspot_y;
wl_signal_emit(&seat_client->seat->events.request_set_cursor, event);
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free(event);
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}
static const struct wl_pointer_interface wl_pointer_impl = {
.set_cursor = wl_pointer_set_cursor,
.release = resource_destroy
};
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static void wl_pointer_destroy(struct wl_resource *resource) {
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struct wlr_seat_client *client = wl_resource_get_user_data(resource);
if (client->pointer) {
client->pointer = NULL;
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}
}
static void wl_seat_get_pointer(struct wl_client *client,
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struct wl_resource *seat_resource, uint32_t id) {
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struct wlr_seat_client *seat_client =
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wl_resource_get_user_data(seat_resource);
if (!(seat_client->seat->capabilities & WL_SEAT_CAPABILITY_POINTER)) {
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return;
}
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if (seat_client->pointer) {
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// TODO: this is probably a protocol violation but it simplifies our
// code and it'd be stupid for clients to create several pointers for
// the same seat
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wl_resource_destroy(seat_client->pointer);
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}
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seat_client->pointer = wl_resource_create(client, &wl_pointer_interface,
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wl_resource_get_version(seat_resource), id);
if (seat_client->pointer == NULL) {
wl_resource_post_no_memory(seat_resource);
return;
}
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wl_resource_set_implementation(seat_client->pointer, &wl_pointer_impl,
seat_client, &wl_pointer_destroy);
}
static const struct wl_keyboard_interface wl_keyboard_impl = {
.release = resource_destroy
};
static void wl_keyboard_destroy(struct wl_resource *resource) {
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struct wlr_seat_client *client = wl_resource_get_user_data(resource);
if (client->keyboard) {
client->keyboard = NULL;
}
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}
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static void seat_client_send_keymap(struct wlr_seat_client *client,
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struct wlr_keyboard *keyboard) {
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if (!keyboard || !client->keyboard) {
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return;
}
// TODO: We should probably lift all of the keys set by the other
// keyboard
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wl_keyboard_send_keymap(client->keyboard,
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WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1, keyboard->keymap_fd,
keyboard->keymap_size);
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if (wl_resource_get_version(client->keyboard) >=
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WL_KEYBOARD_REPEAT_INFO_SINCE_VERSION) {
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wl_keyboard_send_repeat_info(client->keyboard, 25, 600);
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}
}
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static void wl_seat_get_keyboard(struct wl_client *client,
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struct wl_resource *seat_resource, uint32_t id) {
struct wlr_seat_client *seat_client =
wl_resource_get_user_data(seat_resource);
if (!(seat_client->seat->capabilities & WL_SEAT_CAPABILITY_KEYBOARD)) {
return;
}
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if (seat_client->keyboard) {
// TODO: this is probably a protocol violation but it simplifies our
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// code and it'd be stupid for clients to create several keyboards for
// the same seat
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wl_resource_destroy(seat_client->keyboard);
}
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seat_client->keyboard = wl_resource_create(client, &wl_keyboard_interface,
wl_resource_get_version(seat_resource), id);
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if (seat_client->keyboard == NULL) {
wl_resource_post_no_memory(seat_resource);
return;
}
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wl_resource_set_implementation(seat_client->keyboard, &wl_keyboard_impl,
seat_client, &wl_keyboard_destroy);
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seat_client_send_keymap(seat_client,
seat_client->seat->keyboard_state.keyboard);
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// TODO possibly handle the case where this keyboard needs an enter
// right away
}
static const struct wl_touch_interface wl_touch_impl = {
.release = resource_destroy
};
static void wl_touch_destroy(struct wl_resource *resource) {
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struct wlr_seat_client *client = wl_resource_get_user_data(resource);
if (client->touch) {
client->touch = NULL;
}
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}
static void wl_seat_get_touch(struct wl_client *client,
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struct wl_resource *seat_resource, uint32_t id) {
struct wlr_seat_client *seat_client =
wl_resource_get_user_data(seat_resource);
if (!(seat_client->seat->capabilities & WL_SEAT_CAPABILITY_TOUCH)) {
return;
}
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if (seat_client->touch) {
// TODO: this is probably a protocol violation but it simplifies our
// code and it'd be stupid for clients to create several pointers for
// the same seat
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wl_resource_destroy(seat_client->touch);
}
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seat_client->touch = wl_resource_create(client, &wl_touch_interface,
wl_resource_get_version(seat_resource), id);
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if (seat_client->touch == NULL) {
wl_resource_post_no_memory(seat_resource);
return;
}
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wl_resource_set_implementation(seat_client->touch, &wl_touch_impl,
seat_client, &wl_touch_destroy);
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}
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static void wlr_seat_client_resource_destroy(struct wl_resource *resource) {
struct wlr_seat_client *client = wl_resource_get_user_data(resource);
wl_signal_emit(&client->seat->events.client_unbound, client);
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if (client == client->seat->pointer_state.focused_client) {
client->seat->pointer_state.focused_client = NULL;
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}
if (client == client->seat->keyboard_state.focused_client) {
client->seat->keyboard_state.focused_client = NULL;
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}
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if (client->pointer) {
wl_resource_destroy(client->pointer);
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}
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if (client->keyboard) {
wl_resource_destroy(client->keyboard);
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}
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if (client->touch) {
wl_resource_destroy(client->touch);
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}
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if (client->data_device) {
wl_resource_destroy(client->data_device);
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}
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wl_list_remove(&client->link);
free(client);
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}
struct wl_seat_interface wl_seat_impl = {
.get_pointer = wl_seat_get_pointer,
.get_keyboard = wl_seat_get_keyboard,
.get_touch = wl_seat_get_touch,
.release = resource_destroy
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};
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static void wl_seat_bind(struct wl_client *client, void *_wlr_seat,
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uint32_t version, uint32_t id) {
struct wlr_seat *wlr_seat = _wlr_seat;
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assert(client && wlr_seat);
struct wlr_seat_client *seat_client =
calloc(1, sizeof(struct wlr_seat_client));
if (seat_client == NULL) {
wl_client_post_no_memory(client);
return;
}
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seat_client->wl_resource =
wl_resource_create(client, &wl_seat_interface, version, id);
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if (seat_client->wl_resource == NULL) {
free(seat_client);
wl_client_post_no_memory(client);
return;
}
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seat_client->client = client;
seat_client->seat = wlr_seat;
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wl_resource_set_implementation(seat_client->wl_resource, &wl_seat_impl,
seat_client, wlr_seat_client_resource_destroy);
wl_list_insert(&wlr_seat->clients, &seat_client->link);
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if (version >= WL_SEAT_NAME_SINCE_VERSION) {
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wl_seat_send_name(seat_client->wl_resource, wlr_seat->name);
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}
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wl_seat_send_capabilities(seat_client->wl_resource, wlr_seat->capabilities);
wl_signal_emit(&wlr_seat->events.client_bound, seat_client);
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}
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static void default_pointer_enter(struct wlr_seat_pointer_grab *grab,
struct wlr_surface *surface, double sx, double sy) {
wlr_seat_pointer_enter(grab->seat, surface, sx, sy);
}
static void default_pointer_motion(struct wlr_seat_pointer_grab *grab,
uint32_t time, double sx, double sy) {
wlr_seat_pointer_send_motion(grab->seat, time, sx, sy);
}
static uint32_t default_pointer_button(struct wlr_seat_pointer_grab *grab,
uint32_t time, uint32_t button, uint32_t state) {
return wlr_seat_pointer_send_button(grab->seat, time, button, state);
}
static void default_pointer_axis(struct wlr_seat_pointer_grab *grab,
uint32_t time, enum wlr_axis_orientation orientation, double value) {
wlr_seat_pointer_send_axis(grab->seat, time, orientation, value);
}
static void default_pointer_cancel(struct wlr_seat_pointer_grab *grab) {
// cannot be cancelled
}
static const struct wlr_pointer_grab_interface default_pointer_grab_impl = {
.enter = default_pointer_enter,
.motion = default_pointer_motion,
.button = default_pointer_button,
.axis = default_pointer_axis,
.cancel = default_pointer_cancel,
};
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static void default_keyboard_enter(struct wlr_seat_keyboard_grab *grab,
struct wlr_surface *surface) {
wlr_seat_keyboard_enter(grab->seat, surface);
}
static void default_keyboard_key(struct wlr_seat_keyboard_grab *grab,
uint32_t time, uint32_t key, uint32_t state) {
wlr_seat_keyboard_send_key(grab->seat, time, key, state);
}
static void default_keyboard_modifiers(struct wlr_seat_keyboard_grab *grab) {
wlr_seat_keyboard_send_modifiers(grab->seat);
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}
static void default_keyboard_cancel(struct wlr_seat_keyboard_grab *grab) {
// cannot be cancelled
}
static const struct wlr_keyboard_grab_interface default_keyboard_grab_impl = {
.enter = default_keyboard_enter,
.key = default_keyboard_key,
.modifiers = default_keyboard_modifiers,
.cancel = default_keyboard_cancel,
};
static void default_touch_down(struct wlr_seat_touch_grab *grab, uint32_t time,
struct wlr_touch_point *point) {
wlr_seat_touch_send_down(grab->seat, point->surface, time, point->touch_id,
point->sx, point->sy);
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}
static void default_touch_up(struct wlr_seat_touch_grab *grab, uint32_t time,
struct wlr_touch_point *point) {
wlr_seat_touch_send_up(grab->seat, time, point->touch_id);
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}
static void default_touch_motion(struct wlr_seat_touch_grab *grab,
uint32_t time, struct wlr_touch_point *point) {
wlr_seat_touch_send_motion(grab->seat, time, point->touch_id, point->sx,
point->sy);
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}
static void default_touch_cancel(struct wlr_seat_touch_grab *grab) {
// cannot be cancelled
}
static const struct wlr_touch_grab_interface default_touch_grab_impl = {
.down = default_touch_down,
.up = default_touch_up,
.motion = default_touch_motion,
.cancel = default_touch_cancel,
};
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struct wlr_seat *wlr_seat_create(struct wl_display *display, const char *name) {
struct wlr_seat *wlr_seat = calloc(1, sizeof(struct wlr_seat));
if (!wlr_seat) {
return NULL;
}
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// pointer state
wlr_seat->pointer_state.seat = wlr_seat;
wl_list_init(&wlr_seat->pointer_state.surface_destroy.link);
wl_list_init(&wlr_seat->pointer_state.resource_destroy.link);
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struct wlr_seat_pointer_grab *pointer_grab =
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calloc(1, sizeof(struct wlr_seat_pointer_grab));
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if (!pointer_grab) {
free(wlr_seat);
return NULL;
}
pointer_grab->interface = &default_pointer_grab_impl;
pointer_grab->seat = wlr_seat;
wlr_seat->pointer_state.default_grab = pointer_grab;
wlr_seat->pointer_state.grab = pointer_grab;
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// keyboard state
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struct wlr_seat_keyboard_grab *keyboard_grab =
calloc(1, sizeof(struct wlr_seat_keyboard_grab));
if (!keyboard_grab) {
free(pointer_grab);
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free(wlr_seat);
return NULL;
}
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keyboard_grab->interface = &default_keyboard_grab_impl;
keyboard_grab->seat = wlr_seat;
wlr_seat->keyboard_state.default_grab = keyboard_grab;
wlr_seat->keyboard_state.grab = keyboard_grab;
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wlr_seat->keyboard_state.seat = wlr_seat;
wl_list_init(&wlr_seat->keyboard_state.resource_destroy.link);
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wl_list_init(
&wlr_seat->keyboard_state.surface_destroy.link);
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// touch state
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struct wlr_seat_touch_grab *touch_grab =
calloc(1, sizeof(struct wlr_seat_touch_grab));
if (!touch_grab) {
free(pointer_grab);
free(keyboard_grab);
free(wlr_seat);
return NULL;
}
touch_grab->interface = &default_touch_grab_impl;
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touch_grab->seat = wlr_seat;
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wlr_seat->touch_state.default_grab = touch_grab;
wlr_seat->touch_state.grab = touch_grab;
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wlr_seat->touch_state.seat = wlr_seat;
wl_list_init(&wlr_seat->touch_state.touch_points);
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struct wl_global *wl_global = wl_global_create(display,
&wl_seat_interface, 6, wlr_seat, wl_seat_bind);
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if (!wl_global) {
free(wlr_seat);
return NULL;
}
wlr_seat->wl_global = wl_global;
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wlr_seat->display = display;
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wlr_seat->name = strdup(name);
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wl_list_init(&wlr_seat->clients);
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wl_signal_init(&wlr_seat->events.client_bound);
wl_signal_init(&wlr_seat->events.client_unbound);
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wl_signal_init(&wlr_seat->events.request_set_cursor);
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wl_signal_init(&wlr_seat->events.selection);
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wl_signal_init(&wlr_seat->events.pointer_grab_begin);
wl_signal_init(&wlr_seat->events.pointer_grab_end);
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wl_signal_init(&wlr_seat->events.keyboard_grab_begin);
wl_signal_init(&wlr_seat->events.keyboard_grab_end);
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wl_signal_init(&wlr_seat->events.touch_grab_begin);
wl_signal_init(&wlr_seat->events.touch_grab_end);
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return wlr_seat;
}
void wlr_seat_destroy(struct wlr_seat *wlr_seat) {
if (!wlr_seat) {
return;
}
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struct wlr_seat_client *client, *tmp;
wl_list_for_each_safe(client, tmp, &wlr_seat->clients, link) {
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// will destroy other resources as well
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wl_resource_destroy(client->wl_resource);
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}
wl_global_destroy(wlr_seat->wl_global);
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free(wlr_seat->pointer_state.default_grab);
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free(wlr_seat->keyboard_state.default_grab);
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free(wlr_seat->touch_state.default_grab);
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free(wlr_seat->data_device);
free(wlr_seat->name);
free(wlr_seat);
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}
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struct wlr_seat_client *wlr_seat_client_for_wl_client(struct wlr_seat *wlr_seat,
struct wl_client *wl_client) {
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assert(wlr_seat);
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struct wlr_seat_client *seat_client;
wl_list_for_each(seat_client, &wlr_seat->clients, link) {
if (seat_client->client == wl_client) {
return seat_client;
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}
}
return NULL;
}
void wlr_seat_set_capabilities(struct wlr_seat *wlr_seat,
uint32_t capabilities) {
wlr_seat->capabilities = capabilities;
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struct wlr_seat_client *client;
wl_list_for_each(client, &wlr_seat->clients, link) {
wl_seat_send_capabilities(client->wl_resource, capabilities);
}
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}
void wlr_seat_set_name(struct wlr_seat *wlr_seat, const char *name) {
free(wlr_seat->name);
wlr_seat->name = strdup(name);
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struct wlr_seat_client *client;
wl_list_for_each(client, &wlr_seat->clients, link) {
wl_seat_send_name(client->wl_resource, name);
}
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}
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bool wlr_seat_pointer_surface_has_focus(struct wlr_seat *wlr_seat,
struct wlr_surface *surface) {
return surface == wlr_seat->pointer_state.focused_surface;
}
static void pointer_surface_destroy_notify(struct wl_listener *listener,
void *data) {
struct wlr_seat_pointer_state *state = wl_container_of(
listener, state, surface_destroy);
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wl_list_remove(&state->surface_destroy.link);
wl_list_init(&state->surface_destroy.link);
wlr_seat_pointer_clear_focus(state->seat);
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}
static void pointer_resource_destroy_notify(struct wl_listener *listener,
void *data) {
struct wlr_seat_pointer_state *state = wl_container_of(
listener, state, resource_destroy);
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wl_list_remove(&state->resource_destroy.link);
wl_list_init(&state->resource_destroy.link);
wlr_seat_pointer_clear_focus(state->seat);
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}
static bool wlr_seat_pointer_has_focus_resource(struct wlr_seat *wlr_seat) {
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return wlr_seat->pointer_state.focused_client &&
wlr_seat->pointer_state.focused_client->pointer;
}
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void wlr_seat_pointer_enter(struct wlr_seat *wlr_seat,
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struct wlr_surface *surface, double sx, double sy) {
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assert(wlr_seat);
if (wlr_seat->pointer_state.focused_surface == surface) {
// this surface already got an enter notify
return;
}
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struct wlr_seat_client *client = NULL;
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if (surface) {
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struct wl_client *wl_client = wl_resource_get_client(surface->resource);
client = wlr_seat_client_for_wl_client(wlr_seat, wl_client);
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}
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struct wlr_seat_client *focused_client =
wlr_seat->pointer_state.focused_client;
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struct wlr_surface *focused_surface =
wlr_seat->pointer_state.focused_surface;
// leave the previously entered surface
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if (focused_client && focused_client->pointer && focused_surface) {
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uint32_t serial = wl_display_next_serial(wlr_seat->display);
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wl_pointer_send_leave(focused_client->pointer, serial,
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focused_surface->resource);
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pointer_send_frame(focused_client->pointer);
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}
// enter the current surface
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if (client && client->pointer) {
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uint32_t serial = wl_display_next_serial(wlr_seat->display);
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wl_pointer_send_enter(client->pointer, serial, surface->resource,
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wl_fixed_from_double(sx), wl_fixed_from_double(sy));
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pointer_send_frame(client->pointer);
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}
// reinitialize the focus destroy events
wl_list_remove(&wlr_seat->pointer_state.surface_destroy.link);
wl_list_init(&wlr_seat->pointer_state.surface_destroy.link);
wl_list_remove(&wlr_seat->pointer_state.resource_destroy.link);
wl_list_init(&wlr_seat->pointer_state.resource_destroy.link);
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if (surface) {
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wl_signal_add(&surface->events.destroy,
&wlr_seat->pointer_state.surface_destroy);
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wl_resource_add_destroy_listener(surface->resource,
&wlr_seat->pointer_state.resource_destroy);
wlr_seat->pointer_state.resource_destroy.notify =
pointer_resource_destroy_notify;
wlr_seat->pointer_state.surface_destroy.notify =
pointer_surface_destroy_notify;
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}
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wlr_seat->pointer_state.focused_client = client;
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wlr_seat->pointer_state.focused_surface = surface;
// TODO: send focus change event
}
void wlr_seat_pointer_clear_focus(struct wlr_seat *wlr_seat) {
wlr_seat_pointer_enter(wlr_seat, NULL, 0, 0);
}
void wlr_seat_pointer_send_motion(struct wlr_seat *wlr_seat, uint32_t time,
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double sx, double sy) {
if (!wlr_seat_pointer_has_focus_resource(wlr_seat)) {
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return;
}
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wl_pointer_send_motion(wlr_seat->pointer_state.focused_client->pointer,
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time, wl_fixed_from_double(sx), wl_fixed_from_double(sy));
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pointer_send_frame(wlr_seat->pointer_state.focused_client->pointer);
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}
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uint32_t wlr_seat_pointer_send_button(struct wlr_seat *wlr_seat, uint32_t time,
uint32_t button, uint32_t state) {
if (!wlr_seat_pointer_has_focus_resource(wlr_seat)) {
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return 0;
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}
uint32_t serial = wl_display_next_serial(wlr_seat->display);
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wl_pointer_send_button(wlr_seat->pointer_state.focused_client->pointer,
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serial, time, button, state);
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pointer_send_frame(wlr_seat->pointer_state.focused_client->pointer);
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return serial;
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}
void wlr_seat_pointer_send_axis(struct wlr_seat *wlr_seat, uint32_t time,
enum wlr_axis_orientation orientation, double value) {
if (!wlr_seat_pointer_has_focus_resource(wlr_seat)) {
return;
}
struct wl_resource *pointer =
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wlr_seat->pointer_state.focused_client->pointer;
if (value) {
wl_pointer_send_axis(pointer, time, orientation,
wl_fixed_from_double(value));
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} else if (wl_resource_get_version(pointer) >=
WL_POINTER_AXIS_STOP_SINCE_VERSION) {
wl_pointer_send_axis_stop(pointer, time, orientation);
}
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pointer_send_frame(pointer);
}
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void wlr_seat_pointer_start_grab(struct wlr_seat *wlr_seat,
struct wlr_seat_pointer_grab *grab) {
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assert(wlr_seat);
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grab->seat = wlr_seat;
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assert(grab->seat);
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wlr_seat->pointer_state.grab = grab;
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wl_signal_emit(&wlr_seat->events.pointer_grab_begin, grab);
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}
void wlr_seat_pointer_end_grab(struct wlr_seat *wlr_seat) {
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struct wlr_seat_pointer_grab *grab = wlr_seat->pointer_state.grab;
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if (grab != wlr_seat->pointer_state.default_grab) {
wlr_seat->pointer_state.grab = wlr_seat->pointer_state.default_grab;
wl_signal_emit(&wlr_seat->events.pointer_grab_end, grab);
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if (grab->interface->cancel) {
grab->interface->cancel(grab);
}
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}
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}
void wlr_seat_pointer_notify_enter(struct wlr_seat *wlr_seat,
struct wlr_surface *surface, double sx, double sy) {
struct wlr_seat_pointer_grab *grab = wlr_seat->pointer_state.grab;
grab->interface->enter(grab, surface, sx, sy);
}
void wlr_seat_pointer_notify_motion(struct wlr_seat *wlr_seat, uint32_t time,
double sx, double sy) {
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clock_gettime(CLOCK_MONOTONIC, &wlr_seat->last_event);
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struct wlr_seat_pointer_grab *grab = wlr_seat->pointer_state.grab;
grab->interface->motion(grab, time, sx, sy);
}
uint32_t wlr_seat_pointer_notify_button(struct wlr_seat *wlr_seat,
uint32_t time, uint32_t button, uint32_t state) {
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clock_gettime(CLOCK_MONOTONIC, &wlr_seat->last_event);
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if (state == WL_POINTER_BUTTON_STATE_PRESSED) {
if (wlr_seat->pointer_state.button_count == 0) {
wlr_seat->pointer_state.grab_button = button;
wlr_seat->pointer_state.grab_time = time;
}
wlr_seat->pointer_state.button_count++;
} else {
wlr_seat->pointer_state.button_count--;
}
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struct wlr_seat_pointer_grab *grab = wlr_seat->pointer_state.grab;
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uint32_t serial = grab->interface->button(grab, time, button, state);
if (wlr_seat->pointer_state.button_count == 1) {
wlr_seat->pointer_state.grab_serial = serial;
}
return serial;
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}
void wlr_seat_pointer_notify_axis(struct wlr_seat *wlr_seat, uint32_t time,
enum wlr_axis_orientation orientation, double value) {
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clock_gettime(CLOCK_MONOTONIC, &wlr_seat->last_event);
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struct wlr_seat_pointer_grab *grab = wlr_seat->pointer_state.grab;
grab->interface->axis(grab, time, orientation, value);
}
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void wlr_seat_keyboard_send_key(struct wlr_seat *wlr_seat, uint32_t time,
uint32_t key, uint32_t state) {
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struct wlr_seat_client *client = wlr_seat->keyboard_state.focused_client;
if (!client || !client->keyboard) {
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return;
}
uint32_t serial = wl_display_next_serial(wlr_seat->display);
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wl_keyboard_send_key(client->keyboard, serial,
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time, key, state);
}
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static void handle_keyboard_keymap(struct wl_listener *listener, void *data) {
struct wlr_seat_keyboard_state *state =
wl_container_of(listener, state, keyboard_keymap);
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struct wlr_seat_client *client;
wl_list_for_each(client, &state->seat->clients, link) {
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seat_client_send_keymap(client, state->keyboard);
}
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}
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static void handle_keyboard_destroy(struct wl_listener *listener, void *data) {
struct wlr_seat_keyboard_state *state =
wl_container_of(listener, state, keyboard_destroy);
state->keyboard = NULL;
}
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void wlr_seat_set_keyboard(struct wlr_seat *seat,
struct wlr_input_device *device) {
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// TODO call this on device key event before the event reaches the
// compositor and set a pending keyboard and then send the new keyboard
// state on the next keyboard notify event.
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if (seat->keyboard_state.keyboard == device->keyboard) {
return;
}
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if (seat->keyboard_state.keyboard) {
wl_list_remove(&seat->keyboard_state.keyboard_destroy.link);
wl_list_remove(&seat->keyboard_state.keyboard_keymap.link);
seat->keyboard_state.keyboard = NULL;
}
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if (device) {
assert(device->type == WLR_INPUT_DEVICE_KEYBOARD);
wl_signal_add(&device->events.destroy,
&seat->keyboard_state.keyboard_destroy);
seat->keyboard_state.keyboard_destroy.notify = handle_keyboard_destroy;
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wl_signal_add(&device->keyboard->events.keymap,
&seat->keyboard_state.keyboard_keymap);
seat->keyboard_state.keyboard_keymap.notify = handle_keyboard_keymap;
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struct wlr_seat_client *client;
wl_list_for_each(client, &seat->clients, link) {
seat_client_send_keymap(client, device->keyboard);
}
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seat->keyboard_state.keyboard = device->keyboard;
}
}
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void wlr_seat_keyboard_start_grab(struct wlr_seat *wlr_seat,
struct wlr_seat_keyboard_grab *grab) {
grab->seat = wlr_seat;
wlr_seat->keyboard_state.grab = grab;
wl_signal_emit(&wlr_seat->events.keyboard_grab_begin, grab);
}
void wlr_seat_keyboard_end_grab(struct wlr_seat *wlr_seat) {
struct wlr_seat_keyboard_grab *grab = wlr_seat->keyboard_state.grab;
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if (grab != wlr_seat->keyboard_state.default_grab) {
wlr_seat->keyboard_state.grab = wlr_seat->keyboard_state.default_grab;
wl_signal_emit(&wlr_seat->events.keyboard_grab_end, grab);
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if (grab->interface->cancel) {
grab->interface->cancel(grab);
}
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}
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}
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static void keyboard_surface_destroy_notify(struct wl_listener *listener,
void *data) {
struct wlr_seat_keyboard_state *state = wl_container_of(
listener, state, surface_destroy);
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wl_list_remove(&state->surface_destroy.link);
wl_list_init(&state->surface_destroy.link);
wlr_seat_keyboard_clear_focus(state->seat);
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}
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static void keyboard_resource_destroy_notify(struct wl_listener *listener,
void *data) {
struct wlr_seat_keyboard_state *state = wl_container_of(
listener, state, resource_destroy);
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wl_list_remove(&state->resource_destroy.link);
wl_list_init(&state->resource_destroy.link);
wlr_seat_keyboard_clear_focus(state->seat);
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}
void wlr_seat_keyboard_send_modifiers(struct wlr_seat *seat) {
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struct wlr_seat_client *client = seat->keyboard_state.focused_client;
if (!client || !client->keyboard) {
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return;
}
struct wlr_keyboard *keyboard = seat->keyboard_state.keyboard;
if (!keyboard) {
return;
}
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uint32_t serial = wl_display_next_serial(seat->display);
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wl_keyboard_send_modifiers(client->keyboard, serial,
keyboard->modifiers.depressed, keyboard->modifiers.latched,
keyboard->modifiers.locked, keyboard->modifiers.group);
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}
void wlr_seat_keyboard_enter(struct wlr_seat *seat,
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struct wlr_surface *surface) {
if (seat->keyboard_state.focused_surface == surface) {
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// this surface already got an enter notify
return;
}
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struct wlr_seat_client *client = NULL;
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if (surface) {
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struct wl_client *wl_client = wl_resource_get_client(surface->resource);
client = wlr_seat_client_for_wl_client(seat, wl_client);
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}
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struct wlr_seat_client *focused_client =
seat->keyboard_state.focused_client;
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struct wlr_surface *focused_surface =
seat->keyboard_state.focused_surface;
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// leave the previously entered surface
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if (focused_client && focused_client->keyboard && focused_surface) {
uint32_t serial = wl_display_next_serial(seat->display);
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wl_keyboard_send_leave(focused_client->keyboard, serial,
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focused_surface->resource);
}
// enter the current surface
if (client && client->keyboard && seat->keyboard_state.keyboard) {
struct wlr_keyboard *keyboard = seat->keyboard_state.keyboard;
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struct wl_array keys;
wl_array_init(&keys);
size_t n = 0;
for (size_t i = 0; i < WLR_KEYBOARD_KEYS_CAP; ++i) {
if (keyboard->keycodes[i] != 0) {
wl_array_add(&keys, sizeof(uint32_t));
((uint32_t *)keys.data)[n] = keyboard->keycodes[i];
n++;
}
}
uint32_t serial = wl_display_next_serial(seat->display);
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wl_keyboard_send_enter(client->keyboard, serial,
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surface->resource, &keys);
wl_array_release(&keys);
wlr_seat_keyboard_send_modifiers(seat);
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wlr_seat_client_send_selection(client);
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}
// reinitialize the focus destroy events
wl_list_remove(&seat->keyboard_state.surface_destroy.link);
wl_list_init(&seat->keyboard_state.surface_destroy.link);
wl_list_remove(&seat->keyboard_state.resource_destroy.link);
wl_list_init(&seat->keyboard_state.resource_destroy.link);
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if (surface) {
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wl_signal_add(&surface->events.destroy,
&seat->keyboard_state.surface_destroy);
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wl_resource_add_destroy_listener(surface->resource,
&seat->keyboard_state.resource_destroy);
seat->keyboard_state.resource_destroy.notify =
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keyboard_resource_destroy_notify;
seat->keyboard_state.surface_destroy.notify =
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keyboard_surface_destroy_notify;
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}
seat->keyboard_state.focused_client = client;
seat->keyboard_state.focused_surface = surface;
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}
void wlr_seat_keyboard_notify_enter(struct wlr_seat *seat, struct
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wlr_surface *surface) {
struct wlr_seat_keyboard_grab *grab = seat->keyboard_state.grab;
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grab->interface->enter(grab, surface);
}
void wlr_seat_keyboard_clear_focus(struct wlr_seat *seat) {
struct wl_array keys;
wl_array_init(&keys);
wlr_seat_keyboard_enter(seat, NULL);
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}
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void wlr_seat_keyboard_notify_modifiers(struct wlr_seat *seat) {
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clock_gettime(CLOCK_MONOTONIC, &seat->last_event);
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struct wlr_seat_keyboard_grab *grab = seat->keyboard_state.grab;
grab->interface->modifiers(grab);
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}
void wlr_seat_keyboard_notify_key(struct wlr_seat *seat, uint32_t time,
uint32_t key, uint32_t state) {
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clock_gettime(CLOCK_MONOTONIC, &seat->last_event);
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struct wlr_seat_keyboard_grab *grab = seat->keyboard_state.grab;
grab->interface->key(grab, time, key, state);
}
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void wlr_seat_touch_start_grab(struct wlr_seat *wlr_seat,
struct wlr_seat_touch_grab *grab) {
grab->seat = wlr_seat;
wlr_seat->touch_state.grab = grab;
wl_signal_emit(&wlr_seat->events.touch_grab_begin, grab);
}
void wlr_seat_touch_end_grab(struct wlr_seat *wlr_seat) {
struct wlr_seat_touch_grab *grab = wlr_seat->touch_state.grab;
if (grab != wlr_seat->touch_state.default_grab) {
wlr_seat->touch_state.grab = wlr_seat->touch_state.default_grab;
wl_signal_emit(&wlr_seat->events.touch_grab_end, grab);
if (grab->interface->cancel) {
grab->interface->cancel(grab);
}
}
}
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static void touch_point_destroy(struct wlr_touch_point *point) {
wl_signal_emit(&point->events.destroy, point);
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wl_list_remove(&point->surface_destroy.link);
wl_list_remove(&point->resource_destroy.link);
wl_list_remove(&point->link);
free(point);
}
static void handle_touch_point_resource_destroy(struct wl_listener *listener,
void *data) {
struct wlr_touch_point *point =
wl_container_of(listener, point, resource_destroy);
touch_point_destroy(point);
}
static void handle_touch_point_surface_destroy(struct wl_listener *listener,
void *data) {
struct wlr_touch_point *point =
wl_container_of(listener, point, surface_destroy);
touch_point_destroy(point);
}
static struct wlr_touch_point *touch_point_create(
struct wlr_seat *seat, int32_t touch_id,
struct wlr_surface *surface, double sx, double sy) {
struct wl_client *wl_client = wl_resource_get_client(surface->resource);
struct wlr_seat_client *client = wlr_seat_client_for_wl_client(seat, wl_client);
if (!client || !client->touch) {
// touch points are not valid without a connected client with touch
return NULL;
}
struct wlr_touch_point *point = calloc(1, sizeof(struct wlr_touch_point));
if (!point) {
return NULL;
}
point->touch_id = touch_id;
point->surface = surface;
point->client = client;
point->sx = sx;
point->sy = sy;
wl_signal_init(&point->events.destroy);
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wl_signal_add(&surface->events.destroy, &point->surface_destroy);
point->surface_destroy.notify = handle_touch_point_surface_destroy;
wl_resource_add_destroy_listener(surface->resource,
&point->resource_destroy);
point->resource_destroy.notify = handle_touch_point_resource_destroy;
wl_list_insert(&seat->touch_state.touch_points, &point->link);
return point;
}
struct wlr_touch_point *wlr_seat_touch_get_point(
struct wlr_seat *seat, int32_t touch_id) {
struct wlr_touch_point *point = NULL;
wl_list_for_each(point, &seat->touch_state.touch_points, link) {
if (point->touch_id == touch_id) {
return point;
}
}
return NULL;
}
void wlr_seat_touch_notify_down(struct wlr_seat *seat,
struct wlr_surface *surface, uint32_t time, int32_t touch_id, double sx,
double sy) {
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clock_gettime(CLOCK_MONOTONIC, &seat->last_event);
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struct wlr_seat_touch_grab *grab = seat->touch_state.grab;
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struct wlr_touch_point *point =
touch_point_create(seat, touch_id, surface, sx, sy);
if (!point) {
wlr_log(L_ERROR, "could not create touch point");
return;
}
grab->interface->down(grab, time, point);
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if (wl_list_length(&seat->touch_state.touch_points) == 1) {
seat->touch_state.grab_serial = wl_display_get_serial(seat->display);
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seat->touch_state.grab_id = touch_id;
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}
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}
void wlr_seat_touch_notify_up(struct wlr_seat *seat, uint32_t time,
int32_t touch_id) {
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clock_gettime(CLOCK_MONOTONIC, &seat->last_event);
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struct wlr_seat_touch_grab *grab = seat->touch_state.grab;
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struct wlr_touch_point *point = wlr_seat_touch_get_point(seat, touch_id);
if (!point) {
wlr_log(L_ERROR, "got touch up for unknown touch point");
return;
}
grab->interface->up(grab, time, point);
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touch_point_destroy(point);
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}
void wlr_seat_touch_notify_motion(struct wlr_seat *seat,
struct wlr_surface *surface, uint32_t time, int32_t touch_id, double sx,
double sy) {
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clock_gettime(CLOCK_MONOTONIC, &seat->last_event);
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struct wlr_seat_touch_grab *grab = seat->touch_state.grab;
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struct wlr_touch_point *point = wlr_seat_touch_get_point(seat, touch_id);
if (!point) {
wlr_log(L_ERROR, "got touch motion for unknown touch point");
return;
}
point->sx = sx;
point->sy = sy;
grab->interface->motion(grab, time, point);
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}
void wlr_seat_touch_send_down(struct wlr_seat *seat,
struct wlr_surface *surface, uint32_t time, int32_t touch_id, double sx,
double sy) {
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struct wlr_touch_point *point = wlr_seat_touch_get_point(seat, touch_id);
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if (!point) {
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wlr_log(L_ERROR, "got touch down for unknown touch point");
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return;
}
uint32_t serial = wl_display_next_serial(seat->display);
wl_touch_send_down(point->client->touch, serial, time, surface->resource,
touch_id, wl_fixed_from_double(sx), wl_fixed_from_double(sy));
wl_touch_send_frame(point->client->touch);
}
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void wlr_seat_touch_send_up(struct wlr_seat *seat, uint32_t time, int32_t touch_id) {
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struct wlr_touch_point *point = wlr_seat_touch_get_point(seat, touch_id);
if (!point) {
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wlr_log(L_ERROR, "got touch up for unknown touch point");
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return;
}
uint32_t serial = wl_display_next_serial(seat->display);
wl_touch_send_up(point->client->touch, serial, time, touch_id);
wl_touch_send_frame(point->client->touch);
}
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void wlr_seat_touch_send_motion(struct wlr_seat *seat, uint32_t time, int32_t touch_id,
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double sx, double sy) {
struct wlr_touch_point *point = wlr_seat_touch_get_point(seat, touch_id);
if (!point) {
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wlr_log(L_ERROR, "got touch motion for unknown touch point");
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return;
}
wl_touch_send_motion(point->client->touch, time, touch_id,
wl_fixed_from_double(sx), wl_fixed_from_double(sy));
wl_touch_send_frame(point->client->touch);
}