wlroots-hyprland/backend/wayland/wl_seat.c
Calvin Lee 901c14c409 Prevent alloc errors from crashing in list_t
This commit changes the `list_t` api so that alloc errors can be
detected and worked around. Also fixes errors not found in 5cc7342
2017-08-16 09:23:21 +02:00

277 lines
9.2 KiB
C

#define _XOPEN_SOURCE 500
#include <assert.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <wayland-client.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/interfaces/wlr_input_device.h>
#include <wlr/interfaces/wlr_pointer.h>
#include <wlr/interfaces/wlr_keyboard.h>
#include <wlr/interfaces/wlr_touch.h>
#include <wlr/util/log.h>
#include "backend/wayland.h"
static void pointer_handle_enter(void *data, struct wl_pointer *wl_pointer,
uint32_t serial, struct wl_surface *surface, wl_fixed_t surface_x,
wl_fixed_t surface_y) {
struct wlr_input_device *dev = data;
struct wlr_wl_input_device *wlr_wl_dev = (struct wlr_wl_input_device *)dev;
assert(dev && dev->pointer);
struct wlr_wl_pointer *wlr_wl_pointer = (struct wlr_wl_pointer *)dev->pointer;
struct wlr_wl_backend_output *output =
wlr_wl_output_for_surface(wlr_wl_dev->backend, surface);
assert(output);
wlr_wl_pointer->current_output = output;
wlr_wl_pointer->current_output->enter_serial = serial;
wlr_wl_output_update_cursor(wlr_wl_pointer->current_output, serial);
}
static void pointer_handle_leave(void *data, struct wl_pointer *wl_pointer,
uint32_t serial, struct wl_surface *surface) {
struct wlr_input_device *dev = data;
assert(dev && dev->pointer);
struct wlr_wl_pointer *wlr_wl_pointer = (struct wlr_wl_pointer *)dev->pointer;
if (wlr_wl_pointer->current_output) {
wlr_wl_pointer->current_output->enter_serial = 0;
wlr_wl_pointer->current_output = NULL;
}
}
static void pointer_handle_motion(void *data, struct wl_pointer *wl_pointer,
uint32_t time, wl_fixed_t surface_x, wl_fixed_t surface_y) {
struct wlr_input_device *dev = data;
assert(dev && dev->pointer);
struct wlr_wl_pointer *wlr_wl_pointer = (struct wlr_wl_pointer *)dev->pointer;
if (!wlr_wl_pointer->current_output) {
wlr_log(L_ERROR, "pointer motion event without current output");
return;
}
int width, height;
wl_egl_window_get_attached_size(wlr_wl_pointer->current_output->egl_window,
&width, &height);
struct wlr_event_pointer_motion_absolute wlr_event;
wlr_event.time_sec = time / 1000;
wlr_event.time_usec = time * 1000;
wlr_event.width_mm = width;
wlr_event.height_mm = height;
wlr_event.x_mm = wl_fixed_to_double(surface_x);
wlr_event.y_mm = wl_fixed_to_double(surface_y);
wl_signal_emit(&dev->pointer->events.motion_absolute, &wlr_event);
}
static void pointer_handle_button(void *data, struct wl_pointer *wl_pointer,
uint32_t serial, uint32_t time, uint32_t button, uint32_t state) {
struct wlr_input_device *dev = data;
assert(dev && dev->pointer);
struct wlr_event_pointer_button wlr_event;
wlr_event.button = button;
wlr_event.state = state;
wlr_event.time_sec = time / 1000;
wlr_event.time_usec = time * 1000;
wl_signal_emit(&dev->pointer->events.button, &wlr_event);
}
static void pointer_handle_axis(void *data, struct wl_pointer *wl_pointer,
uint32_t time, uint32_t axis, wl_fixed_t value) {
struct wlr_input_device *dev = data;
assert(dev && dev->pointer);
struct wlr_wl_pointer *wlr_wl_pointer = (struct wlr_wl_pointer *)dev->pointer;
struct wlr_event_pointer_axis wlr_event;
wlr_event.delta = value;
wlr_event.orientation = axis;
wlr_event.time_sec = time / 1000;
wlr_event.time_usec = time * 1000;
wlr_event.source = wlr_wl_pointer->axis_source;
wl_signal_emit(&dev->pointer->events.axis, &wlr_event);
}
static void pointer_handle_frame(void *data, struct wl_pointer *wl_pointer) {
}
static void pointer_handle_axis_source(void *data, struct wl_pointer *wl_pointer,
uint32_t axis_source) {
struct wlr_input_device *dev = data;
assert(dev && dev->pointer);
struct wlr_wl_pointer *wlr_wl_pointer = (struct wlr_wl_pointer *)dev->pointer;
wlr_wl_pointer->axis_source = axis_source;
}
static void pointer_handle_axis_stop(void *data, struct wl_pointer *wl_pointer,
uint32_t time, uint32_t axis) {
}
static void pointer_handle_axis_discrete(void *data, struct wl_pointer *wl_pointer,
uint32_t axis, int32_t discrete) {
}
static const struct wl_pointer_listener pointer_listener = {
.enter = pointer_handle_enter,
.leave = pointer_handle_leave,
.motion = pointer_handle_motion,
.button = pointer_handle_button,
.axis = pointer_handle_axis,
.frame = pointer_handle_frame,
.axis_source = pointer_handle_axis_source,
.axis_stop = pointer_handle_axis_stop,
.axis_discrete = pointer_handle_axis_discrete
};
static void keyboard_handle_keymap(void *data, struct wl_keyboard *wl_keyboard,
uint32_t format, int32_t fd, uint32_t size) {
}
static void keyboard_handle_enter(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, struct wl_surface *surface, struct wl_array *keys) {
}
static void keyboard_handle_leave(void *data, struct wl_keyboard *wl_keyboard,
uint32_t serial, struct wl_surface *surface) {
}
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_input_device *dev = data;
assert(dev && dev->keyboard);
struct wlr_event_keyboard_key wlr_event;
wlr_event.keycode = key;
wlr_event.state = state;
wlr_event.time_sec = time / 1000;
wlr_event.time_usec = time * 1000;
wl_signal_emit(&dev->keyboard->events.key, &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) {
}
static void keyboard_handle_repeat_info(void *data, struct wl_keyboard *wl_keyboard,
int32_t rate, int32_t delay) {
}
static 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 void input_device_destroy(struct wlr_input_device *_dev) {
struct wlr_wl_input_device *dev = (struct wlr_wl_input_device *)_dev;
wl_signal_emit(&dev->backend->backend.events.input_remove, &dev->wlr_input_device);
if (dev->resource) {
wl_proxy_destroy(dev->resource);
}
free(dev);
}
static struct wlr_input_device_impl input_device_impl = {
.destroy = input_device_destroy
};
static struct wlr_input_device *allocate_device(struct wlr_wl_backend *backend,
enum wlr_input_device_type type) {
struct wlr_wl_input_device *wlr_wl_dev;
if (!(wlr_wl_dev = calloc(1, sizeof(struct wlr_wl_input_device)))) {
wlr_log_errno(L_ERROR, "Allocation failed");
return NULL;
}
wlr_wl_dev->backend = backend;
int vendor = 0;
int product = 0;
const char *name = "wayland";
struct wlr_input_device *wlr_device = &wlr_wl_dev->wlr_input_device;
wlr_input_device_init(wlr_device, type, &input_device_impl,
name, vendor, product);
if (list_add(backend->devices, wlr_device) == -1) {
wlr_log_errno(L_ERROR, "Allocation failed");
free(wlr_wl_dev);
return NULL;
}
return wlr_device;
}
static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
enum wl_seat_capability caps) {
struct wlr_wl_backend *backend = data;
assert(backend->seat == wl_seat);
if ((caps & WL_SEAT_CAPABILITY_POINTER)) {
wlr_log(L_DEBUG, "seat %p offered pointer", (void*) wl_seat);
struct wlr_wl_pointer *wlr_wl_pointer;
if (!(wlr_wl_pointer = calloc(1, sizeof(struct wlr_wl_pointer)))) {
wlr_log(L_ERROR, "Unable to allocate wlr_wl_pointer");
return;
}
struct wlr_input_device *wlr_device;
if (!(wlr_device = allocate_device(backend, WLR_INPUT_DEVICE_POINTER))) {
free(wlr_wl_pointer);
wlr_log(L_ERROR, "Unable to allocate wlr_device for pointer");
return;
}
struct wlr_wl_input_device *wlr_wl_device =
(struct wlr_wl_input_device *)wlr_device;
struct wl_pointer *wl_pointer = wl_seat_get_pointer(wl_seat);
wl_pointer_add_listener(wl_pointer, &pointer_listener, wlr_device);
wlr_device->pointer = &wlr_wl_pointer->wlr_pointer;
wlr_pointer_init(wlr_device->pointer, NULL);
wlr_wl_device->resource = wl_pointer;
wl_signal_emit(&backend->backend.events.input_add, wlr_device);
backend->pointer = wl_pointer;
}
if ((caps & WL_SEAT_CAPABILITY_KEYBOARD)) {
wlr_log(L_DEBUG, "seat %p offered keyboard", (void*) wl_seat);
struct wlr_input_device *wlr_device = allocate_device(backend,
WLR_INPUT_DEVICE_KEYBOARD);
if (!wlr_device) {
wlr_log(L_ERROR, "Unable to allocate wl_keyboard device");
return;
}
wlr_device->keyboard = calloc(1, sizeof(struct wlr_keyboard));
if (!wlr_device->keyboard) {
free(wlr_device);
wlr_log(L_ERROR, "Unable to allocate wlr keyboard");
return;
}
wlr_keyboard_init(wlr_device->keyboard, NULL);
struct wlr_wl_input_device *wlr_wl_device =
(struct wlr_wl_input_device *)wlr_device;
struct wl_keyboard *wl_keyboard = wl_seat_get_keyboard(wl_seat);
wl_keyboard_add_listener(wl_keyboard, &keyboard_listener, wlr_device);
wlr_wl_device->resource = wl_keyboard;
wl_signal_emit(&backend->backend.events.input_add, wlr_device);
}
}
static void seat_handle_name(void *data, struct wl_seat *wl_seat, const char *name) {
struct wlr_wl_backend *backend = data;
assert(backend->seat == wl_seat);
// Do we need to check if seatName was previously set for name change?
free(backend->seat_name);
backend->seat_name = strdup(name);
}
const struct wl_seat_listener seat_listener = {
.capabilities = seat_handle_capabilities,
.name = seat_handle_name,
};