wlroots-hyprland/backend/wayland/seat.c
Simon Zeni be8527bd36 backend/wayland: give wlr_pointer ownership to wlr_wl_seat
All the code logic related to the pointer has been moved to its own file.

The seat is responsible for the lifetime of its wlr_wl_pointer(s), and assigning
them to the relevant wlr_wl_output. The wlr_wl_pointer becomes a simple helper
to manager the wlr_pointer associated to the seat's wl_pointer and its lifetime.
2022-03-17 17:16:47 +00:00

460 lines
13 KiB
C

#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <wayland-client.h>
#include <wlr/interfaces/wlr_keyboard.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/interfaces/wlr_switch.h>
#include <wlr/interfaces/wlr_touch.h>
#include <wlr/interfaces/wlr_tablet_tool.h>
#include <wlr/interfaces/wlr_tablet_pad.h>
#include <wlr/util/log.h>
#include "interfaces/wlr_input_device.h"
#include "backend/wayland.h"
#include "util/signal.h"
#include "util/time.h"
static const struct wlr_touch_impl touch_impl;
static void keyboard_handle_keymap(void *data, struct wl_keyboard *wl_keyboard,
uint32_t format, int32_t fd, uint32_t size) {
close(fd);
}
static void keyboard_handle_enter(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, struct wl_surface *surface, struct wl_array *keys) {
struct wlr_keyboard *keyboard = data;
uint32_t *keycode_ptr;
wl_array_for_each(keycode_ptr, keys) {
struct wlr_event_keyboard_key event = {
.keycode = *keycode_ptr,
.state = WL_KEYBOARD_KEY_STATE_PRESSED,
.time_msec = get_current_time_msec(),
.update_state = false,
};
wlr_keyboard_notify_key(keyboard, &event);
}
}
static void keyboard_handle_leave(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, struct wl_surface *surface) {
struct wlr_keyboard *keyboard = data;
size_t num_keycodes = keyboard->num_keycodes;
uint32_t pressed[num_keycodes + 1];
memcpy(pressed, keyboard->keycodes,
num_keycodes * sizeof(uint32_t));
for (size_t i = 0; i < num_keycodes; ++i) {
uint32_t keycode = pressed[i];
struct wlr_event_keyboard_key event = {
.keycode = keycode,
.state = WL_KEYBOARD_KEY_STATE_RELEASED,
.time_msec = get_current_time_msec(),
.update_state = false,
};
wlr_keyboard_notify_key(keyboard, &event);
}
}
static void keyboard_handle_key(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, uint32_t time, uint32_t key, uint32_t state) {
struct wlr_keyboard *keyboard = data;
struct wlr_event_keyboard_key wlr_event = {
.keycode = key,
.state = state,
.time_msec = time,
.update_state = false,
};
wlr_keyboard_notify_key(keyboard, &wlr_event);
}
static void keyboard_handle_modifiers(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, uint32_t mods_depressed, uint32_t mods_latched,
uint32_t mods_locked, uint32_t group) {
struct wlr_keyboard *keyboard = data;
wlr_keyboard_notify_modifiers(keyboard, mods_depressed, mods_latched,
mods_locked, group);
}
static void keyboard_handle_repeat_info(void *data,
struct wl_keyboard *wl_keyboard, int32_t rate, int32_t delay) {
// This space is intentionally left blank
}
static const struct wl_keyboard_listener keyboard_listener = {
.keymap = keyboard_handle_keymap,
.enter = keyboard_handle_enter,
.leave = keyboard_handle_leave,
.key = keyboard_handle_key,
.modifiers = keyboard_handle_modifiers,
.repeat_info = keyboard_handle_repeat_info
};
static const struct wlr_keyboard_impl keyboard_impl = {
.name = "wl-keyboard",
};
void init_seat_keyboard(struct wlr_wl_seat *seat) {
assert(seat->wl_keyboard);
char name[128] = {0};
snprintf(name, sizeof(name), "wayland-keyboard-%s", seat->name);
wlr_keyboard_init(&seat->wlr_keyboard, &keyboard_impl, name);
wl_keyboard_add_listener(seat->wl_keyboard, &keyboard_listener,
&seat->wlr_keyboard);
wlr_signal_emit_safe(&seat->backend->backend.events.new_input,
&seat->wlr_keyboard.base);
}
static void touch_coordinates_to_absolute(struct wlr_wl_input_device *device,
wl_fixed_t x, wl_fixed_t y, double *sx, double *sy) {
// TODO: each output needs its own touch
struct wlr_wl_output *output, *tmp;
wl_list_for_each_safe(output, tmp, &device->backend->outputs, link) {
*sx = wl_fixed_to_double(x) / output->wlr_output.width;
*sy = wl_fixed_to_double(y) / output->wlr_output.height;
return; // Choose the first output in the list
}
*sx = *sy = 0;
}
static void touch_handle_down(void *data, struct wl_touch *wl_touch,
uint32_t serial, uint32_t time, struct wl_surface *surface,
int32_t id, wl_fixed_t x, wl_fixed_t y) {
struct wlr_wl_input_device *device = data;
assert(device && device->wlr_input_device.touch);
double sx, sy;
touch_coordinates_to_absolute(device, x, y, &sx, &sy);
struct wlr_event_touch_down event = {
.device = &device->wlr_input_device,
.time_msec = time,
.touch_id = id,
.x = sx,
.y = sy
};
wlr_signal_emit_safe(&device->wlr_input_device.touch->events.down, &event);
}
static void touch_handle_up(void *data, struct wl_touch *wl_touch,
uint32_t serial, uint32_t time, int32_t id) {
struct wlr_wl_input_device *device = data;
assert(device && device->wlr_input_device.touch);
struct wlr_event_touch_up event = {
.device = &device->wlr_input_device,
.time_msec = time,
.touch_id = id,
};
wlr_signal_emit_safe(&device->wlr_input_device.touch->events.up, &event);
}
static void touch_handle_motion(void *data, struct wl_touch *wl_touch,
uint32_t time, int32_t id, wl_fixed_t x, wl_fixed_t y) {
struct wlr_wl_input_device *device = data;
assert(device && device->wlr_input_device.touch);
double sx, sy;
touch_coordinates_to_absolute(device, x, y, &sx, &sy);
struct wlr_event_touch_motion event = {
.device = &device->wlr_input_device,
.time_msec = time,
.touch_id = id,
.x = sx,
.y = sy
};
wlr_signal_emit_safe(&device->wlr_input_device.touch->events.motion, &event);
}
static void touch_handle_frame(void *data, struct wl_touch *wl_touch) {
struct wlr_wl_input_device *device = data;
assert(device && device->wlr_input_device.touch);
wlr_signal_emit_safe(&device->wlr_input_device.touch->events.frame, NULL);
}
static void touch_handle_cancel(void *data, struct wl_touch *wl_touch) {
// no-op
}
static void touch_handle_shape(void *data, struct wl_touch *wl_touch,
int32_t id, wl_fixed_t major, wl_fixed_t minor) {
// no-op
}
static void touch_handle_orientation(void *data, struct wl_touch *wl_touch,
int32_t id, wl_fixed_t orientation) {
// no-op
}
static const struct wl_touch_listener touch_listener = {
.down = touch_handle_down,
.up = touch_handle_up,
.motion = touch_handle_motion,
.frame = touch_handle_frame,
.cancel = touch_handle_cancel,
.shape = touch_handle_shape,
.orientation = touch_handle_orientation,
};
static struct wlr_wl_input_device *get_wl_input_device_from_input_device(
struct wlr_input_device *wlr_dev) {
assert(wlr_input_device_is_wl(wlr_dev));
return (struct wlr_wl_input_device *)wlr_dev;
}
bool create_wl_seat(struct wl_seat *wl_seat, struct wlr_wl_backend *wl) {
struct wlr_wl_seat *seat = calloc(1, sizeof(struct wlr_wl_seat));
if (!seat) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
return false;
}
seat->wl_seat = wl_seat;
seat->backend = wl;
wl_list_insert(&wl->seats, &seat->link);
wl_seat_add_listener(wl_seat, &seat_listener, seat);
return true;
}
void destroy_wl_seats(struct wlr_wl_backend *wl) {
struct wlr_wl_seat *seat, *tmp_seat;
wl_list_for_each_safe(seat, tmp_seat, &wl->seats, link) {
if (seat->touch) {
wl_touch_destroy(seat->touch);
}
if (seat->wl_pointer) {
finish_seat_pointer(seat);
}
if (seat->wl_keyboard) {
wl_keyboard_release(seat->wl_keyboard);
wlr_keyboard_finish(&seat->wlr_keyboard);
}
free(seat->name);
assert(seat->wl_seat);
wl_seat_destroy(seat->wl_seat);
wl_list_remove(&seat->link);
free(seat);
}
}
static struct wlr_wl_seat *input_device_get_seat(struct wlr_input_device *wlr_dev) {
struct wlr_wl_input_device *dev =
get_wl_input_device_from_input_device(wlr_dev);
assert(dev->seat);
return dev->seat;
}
bool wlr_input_device_is_wl(struct wlr_input_device *dev) {
switch (dev->type) {
case WLR_INPUT_DEVICE_KEYBOARD:
return dev->keyboard->impl == &keyboard_impl;
case WLR_INPUT_DEVICE_POINTER:
return dev->pointer->impl == &wl_pointer_impl;
case WLR_INPUT_DEVICE_TOUCH:
return dev->touch->impl == &touch_impl;
case WLR_INPUT_DEVICE_TABLET_TOOL:
return dev->tablet->impl == &tablet_impl;
case WLR_INPUT_DEVICE_TABLET_PAD:
return dev->tablet_pad->impl == &tablet_pad_impl;
default:
return false;
}
}
struct wlr_wl_input_device *create_wl_input_device(
struct wlr_wl_seat *seat, enum wlr_input_device_type type) {
struct wlr_wl_input_device *dev =
calloc(1, sizeof(struct wlr_wl_input_device));
if (dev == NULL) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
return NULL;
}
dev->backend = seat->backend;
dev->seat = seat;
struct wlr_input_device *wlr_dev = &dev->wlr_input_device;
const char *type_name = "unknown";
switch (type) {
case WLR_INPUT_DEVICE_KEYBOARD:
wlr_log(WLR_ERROR, "can't create keyboard wlr_wl_input_device");
free(dev);
return NULL;
case WLR_INPUT_DEVICE_POINTER:
wlr_log(WLR_ERROR, "can't create pointer wlr_wl_input_device");
free(dev);
return NULL;
case WLR_INPUT_DEVICE_TOUCH:
type_name = "touch";
break;
case WLR_INPUT_DEVICE_TABLET_TOOL:
type_name = "tablet-tool";
break;
case WLR_INPUT_DEVICE_TABLET_PAD:
type_name = "tablet-pad";
break;
case WLR_INPUT_DEVICE_SWITCH:
type_name = "switch";
break;
}
size_t name_size = 8 + strlen(type_name) + strlen(seat->name) + 1;
char name[name_size];
(void) snprintf(name, name_size, "wayland-%s-%s", type_name, seat->name);
wlr_input_device_init(wlr_dev, type, name);
wl_list_insert(&seat->backend->devices, &dev->link);
return dev;
}
void destroy_wl_input_device(struct wlr_wl_input_device *dev) {
/**
* TODO remove the redundant wlr_input_device from wlr_wl_input_device
* wlr_wl_input_device::wlr_input_device is not owned by its input device
* type, which means we have 2 wlr_input_device to cleanup
*/
wlr_input_device_finish(&dev->wlr_input_device);
if (dev->wlr_input_device._device) {
struct wlr_input_device *wlr_dev = &dev->wlr_input_device;
switch (wlr_dev->type) {
case WLR_INPUT_DEVICE_KEYBOARD:
wlr_log(WLR_ERROR, "wlr_wl_input_device has no keyboard");
break;
case WLR_INPUT_DEVICE_POINTER:
wlr_log(WLR_ERROR, "wlr_wl_input_device has no pointer");
break;
case WLR_INPUT_DEVICE_SWITCH:
wlr_switch_finish(wlr_dev->switch_device);
break;
case WLR_INPUT_DEVICE_TABLET_PAD:
wlr_tablet_pad_finish(wlr_dev->tablet_pad);
free(wlr_dev->tablet_pad);
break;
case WLR_INPUT_DEVICE_TABLET_TOOL:
wlr_tablet_finish(wlr_dev->tablet);
free(wlr_dev->tablet);
break;
case WLR_INPUT_DEVICE_TOUCH:
wlr_touch_finish(wlr_dev->touch);
free(wlr_dev->touch);
break;
}
}
wl_list_remove(&dev->link);
free(dev);
}
void create_wl_touch(struct wlr_wl_seat *seat) {
assert(seat->touch);
struct wl_touch *wl_touch = seat->touch;
struct wlr_wl_input_device *dev =
create_wl_input_device(seat, WLR_INPUT_DEVICE_TOUCH);
if (!dev) {
return;
}
struct wlr_input_device *wlr_dev = &dev->wlr_input_device;
wlr_dev->touch = calloc(1, sizeof(*wlr_dev->touch));
if (!wlr_dev->touch) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
destroy_wl_input_device(dev);
return;
}
wlr_touch_init(wlr_dev->touch, &touch_impl, wlr_dev->name);
wl_touch_add_listener(wl_touch, &touch_listener, dev);
wlr_signal_emit_safe(&seat->backend->backend.events.new_input, wlr_dev);
}
static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
enum wl_seat_capability caps) {
struct wlr_wl_seat *seat = data;
struct wlr_wl_backend *backend = seat->backend;
if ((caps & WL_SEAT_CAPABILITY_POINTER) && seat->wl_pointer == NULL) {
wlr_log(WLR_DEBUG, "seat '%s' offering pointer", seat->name);
seat->wl_pointer = wl_seat_get_pointer(wl_seat);
init_seat_pointer(seat);
}
if (!(caps & WL_SEAT_CAPABILITY_POINTER) && seat->wl_pointer != NULL) {
wlr_log(WLR_DEBUG, "seat '%s' dropping pointer", seat->name);
finish_seat_pointer(seat);
}
if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && seat->wl_keyboard == NULL) {
wlr_log(WLR_DEBUG, "seat '%s' offering keyboard", seat->name);
struct wl_keyboard *wl_keyboard = wl_seat_get_keyboard(wl_seat);
seat->wl_keyboard = wl_keyboard;
if (backend->started) {
init_seat_keyboard(seat);
}
}
if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && seat->wl_keyboard != NULL) {
wlr_log(WLR_DEBUG, "seat '%s' dropping keyboard", seat->name);
wl_keyboard_release(seat->wl_keyboard);
wlr_keyboard_finish(&seat->wlr_keyboard);
seat->wl_keyboard = NULL;
}
if ((caps & WL_SEAT_CAPABILITY_TOUCH) && seat->touch == NULL) {
wlr_log(WLR_DEBUG, "seat %p offered touch", (void *)wl_seat);
seat->touch = wl_seat_get_touch(wl_seat);
if (backend->started) {
create_wl_touch(seat);
}
}
if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && seat->touch != NULL) {
wlr_log(WLR_DEBUG, "seat %p dropped touch", (void *)wl_seat);
struct wlr_wl_input_device *device, *tmp;
wl_list_for_each_safe(device, tmp, &backend->devices, link) {
if (device->wlr_input_device.type == WLR_INPUT_DEVICE_TOUCH) {
destroy_wl_input_device(device);
}
}
wl_touch_release(seat->touch);
seat->touch = NULL;
}
}
static void seat_handle_name(void *data, struct wl_seat *wl_seat,
const char *name) {
struct wlr_wl_seat *seat = data;
free(seat->name);
seat->name = strdup(name);
}
const struct wl_seat_listener seat_listener = {
.capabilities = seat_handle_capabilities,
.name = seat_handle_name,
};
struct wl_seat *wlr_wl_input_device_get_seat(struct wlr_input_device *wlr_dev) {
return input_device_get_seat(wlr_dev)->wl_seat;
}