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libxkbcommon/tools/interactive-wayland.c

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/*
* Copyright © 2012 Collabora, Ltd.
* Copyright © 2013 Ran Benita <ran234@gmail.com>
* Copyright © 2016 Daniel Stone <daniel@fooishbar.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "config.h"
#include <errno.h>
#include <fcntl.h>
#include <locale.h>
#include <stdint.h>
#include <unistd.h>
#include <sys/mman.h>
#include "xkbcommon/xkbcommon.h"
#include "tools-common.h"
#include <wayland-client.h>
#include "xdg-shell-client-protocol.h"
#include <wayland-util.h>
struct interactive_dpy {
struct wl_display *dpy;
struct wl_compositor *compositor;
struct xdg_wm_base *shell;
struct wl_shm *shm;
uint32_t shm_format;
struct xkb_context *ctx;
struct wl_surface *wl_surf;
struct xdg_surface *xdg_surf;
struct xdg_toplevel *xdg_top;
struct wl_list seats;
};
struct interactive_seat {
struct interactive_dpy *inter;
struct wl_seat *wl_seat;
struct wl_keyboard *wl_kbd;
struct wl_pointer *wl_pointer;
uint32_t version; /* ... of wl_seat */
uint32_t global_name; /* an ID of sorts */
char *name_str; /* a descriptor */
struct xkb_keymap *keymap;
struct xkb_state *state;
struct wl_list link;
};
static bool terminate;
#ifdef HAVE_MKOSTEMP
static int
create_tmpfile_cloexec(char *tmpname)
{
int fd = mkostemp(tmpname, O_CLOEXEC);
if (fd >= 0)
unlink(tmpname);
return fd;
}
#else
/* The following utility functions are taken from Weston's
* shared/os-compatibility.c. */
static int
os_fd_set_cloexec(int fd)
{
long flags;
if (fd == -1)
return -1;
flags = fcntl(fd, F_GETFD);
if (flags == -1)
return -1;
if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
return -1;
return 0;
}
static int
set_cloexec_or_close(int fd)
{
if (os_fd_set_cloexec(fd) != 0) {
close(fd);
return -1;
}
return fd;
}
static int
create_tmpfile_cloexec(char *tmpname)
{
int fd = mkstemp(tmpname);
if (fd >= 0) {
fd = set_cloexec_or_close(fd);
unlink(tmpname);
}
return fd;
}
#endif
/*
* Create a new, unique, anonymous file of the given size, and
* return the file descriptor for it. The file descriptor is set
* CLOEXEC. The file is immediately suitable for mmap()'ing
* the given size at offset zero.
*
* The file should not have a permanent backing store like a disk,
* but may have if XDG_RUNTIME_DIR is not properly implemented in OS.
*
* The file name is deleted from the file system.
*
* The file is suitable for buffer sharing between processes by
* transmitting the file descriptor over Unix sockets using the
* SCM_RIGHTS methods.
*
* If the C library implements posix_fallocate(), it is used to
* guarantee that disk space is available for the file at the
* given size. If disk space is insufficent, errno is set to ENOSPC.
* If posix_fallocate() is not supported, program may receive
* SIGBUS on accessing mmap()'ed file contents instead.
*/
static int
os_create_anonymous_file(off_t size)
{
static const char template[] = "/weston-shared-XXXXXX";
const char *path;
char *name;
int fd;
int ret;
path = getenv("XDG_RUNTIME_DIR");
if (!path) {
errno = ENOENT;
return -1;
}
name = malloc(strlen(path) + sizeof(template));
if (!name)
return -1;
strcpy(name, path);
strcat(name, template);
fd = create_tmpfile_cloexec(name);
free(name);
if (fd < 0)
return -1;
#ifdef HAVE_POSIX_FALLOCATE
ret = posix_fallocate(fd, 0, size);
if (ret != 0) {
close(fd);
errno = ret;
return -1;
}
#else
ret = ftruncate(fd, size);
if (ret < 0) {
close(fd);
return -1;
}
#endif
return fd;
}
static void
buffer_release(void *data, struct wl_buffer *buffer)
{
wl_buffer_destroy(buffer);
}
static const struct wl_buffer_listener buffer_listener = {
buffer_release
};
static void
buffer_create(struct interactive_dpy *inter, uint32_t width, uint32_t height)
{
struct wl_shm_pool *pool;
struct wl_buffer *buf;
struct wl_region *opaque;
uint32_t stride;
size_t size;
void *map;
int fd;
switch (inter->shm_format) {
case WL_SHM_FORMAT_ARGB8888:
case WL_SHM_FORMAT_XRGB8888:
case WL_SHM_FORMAT_ABGR8888:
case WL_SHM_FORMAT_XBGR8888:
stride = width * 4;
break;
case WL_SHM_FORMAT_RGB565:
case WL_SHM_FORMAT_BGR565:
stride = width * 2;
break;
default:
fprintf(stderr, "Unsupported SHM format %d\n", inter->shm_format);
exit(1);
}
size = stride * height;
fd = os_create_anonymous_file(size);
if (fd < 0) {
fprintf(stderr, "Couldn't create surface buffer\n");
exit(1);
}
map = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (map == MAP_FAILED) {
fprintf(stderr, "Couldn't mmap surface buffer\n");
exit(1);
}
memset(map, 0xff, size);
munmap(map, size);
pool = wl_shm_create_pool(inter->shm, fd, size);
buf = wl_shm_pool_create_buffer(pool, 0, width, height, stride,
inter->shm_format);
wl_buffer_add_listener(buf, &buffer_listener, inter);
wl_surface_attach(inter->wl_surf, buf, 0, 0);
wl_surface_damage(inter->wl_surf, 0, 0, width, height);
opaque = wl_compositor_create_region(inter->compositor);
wl_region_add(opaque, 0, 0, width, height);
wl_surface_set_opaque_region(inter->wl_surf, opaque);
wl_region_destroy(opaque);
wl_shm_pool_destroy(pool);
close(fd);
}
static void
surface_configure(void *data, struct xdg_surface *surface,
uint32_t serial)
{
struct interactive_dpy *inter = data;
xdg_surface_ack_configure(inter->xdg_surf, serial);
wl_surface_commit(inter->wl_surf);
}
static const struct xdg_surface_listener surface_listener = {
surface_configure,
};
static void
toplevel_configure(void *data, struct xdg_toplevel *toplevel,
int32_t width, int32_t height, struct wl_array *states)
{
struct interactive_dpy *inter = data;
if (width == 0)
width = 200;
if (height == 0)
height = 200;
buffer_create(inter, width, height);
}
static void
toplevel_close(void *data, struct xdg_toplevel *toplevel)
{
terminate = true;
}
static const struct xdg_toplevel_listener toplevel_listener = {
toplevel_configure,
toplevel_close
};
static void surface_create(struct interactive_dpy *inter)
{
inter->wl_surf = wl_compositor_create_surface(inter->compositor);
inter->xdg_surf = xdg_wm_base_get_xdg_surface(inter->shell, inter->wl_surf);
xdg_surface_add_listener(inter->xdg_surf, &surface_listener, inter);
inter->xdg_top = xdg_surface_get_toplevel(inter->xdg_surf);
xdg_toplevel_add_listener(inter->xdg_top, &toplevel_listener, inter);
xdg_toplevel_set_title(inter->xdg_top, "xkbcommon event tester");
xdg_toplevel_set_app_id(inter->xdg_top,
"org.xkbcommon.test.interactive-wayland");
wl_surface_commit(inter->wl_surf);
}
static void
shell_ping(void *data, struct xdg_wm_base *shell, uint32_t serial)
{
xdg_wm_base_pong(shell, serial);
}
static const struct xdg_wm_base_listener shell_listener = {
shell_ping
};
static void
kbd_keymap(void *data, struct wl_keyboard *wl_kbd, uint32_t format,
int fd, uint32_t size)
{
struct interactive_seat *seat = data;
void *buf;
buf = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
if (buf == MAP_FAILED) {
fprintf(stderr, "Failed to mmap keymap: %d\n", errno);
close(fd);
return;
}
seat->keymap = xkb_keymap_new_from_buffer(seat->inter->ctx, buf, size - 1,
XKB_KEYMAP_FORMAT_TEXT_V1,
XKB_KEYMAP_COMPILE_NO_FLAGS);
munmap(buf, size);
close(fd);
if (!seat->keymap) {
fprintf(stderr, "Failed to compile keymap!\n");
return;
}
seat->state = xkb_state_new(seat->keymap);
if (!seat->state) {
fprintf(stderr, "Failed to create XKB state!\n");
return;
}
}
static void
kbd_enter(void *data, struct wl_keyboard *wl_kbd, uint32_t serial,
struct wl_surface *surf, struct wl_array *keys)
{
}
static void
kbd_leave(void *data, struct wl_keyboard *wl_kbd, uint32_t serial,
struct wl_surface *surf)
{
}
static void
kbd_key(void *data, struct wl_keyboard *wl_kbd, uint32_t serial, uint32_t time,
uint32_t key, uint32_t state)
{
struct interactive_seat *seat = data;
if (state != WL_KEYBOARD_KEY_STATE_PRESSED)
return;
printf("%s: ", seat->name_str);
tools_print_keycode_state(seat->state, NULL, key + 8,
XKB_CONSUMED_MODE_XKB);
/* Exit on ESC. */
if (xkb_state_key_get_one_sym(seat->state, key + 8) == XKB_KEY_Escape)
terminate = true;
}
static void
kbd_modifiers(void *data, struct wl_keyboard *wl_kbd, uint32_t serial,
uint32_t mods_depressed, uint32_t mods_latched,
uint32_t mods_locked, uint32_t group)
{
struct interactive_seat *seat = data;
xkb_state_update_mask(seat->state, mods_depressed, mods_latched,
mods_locked, 0, 0, group);
}
static void
kbd_repeat_info(void *data, struct wl_keyboard *wl_kbd, int32_t rate,
int32_t delay)
{
}
static const struct wl_keyboard_listener kbd_listener = {
kbd_keymap,
kbd_enter,
kbd_leave,
kbd_key,
kbd_modifiers,
kbd_repeat_info
};
static void
pointer_enter(void *data, struct wl_pointer *wl_pointer, uint32_t serial,
struct wl_surface *surf, wl_fixed_t fsx, wl_fixed_t fsy)
{
}
static void
pointer_leave(void *data, struct wl_pointer *wl_pointer, uint32_t serial,
struct wl_surface *surf)
{
}
static void
pointer_motion(void *data, struct wl_pointer *wl_pointer, uint32_t time,
wl_fixed_t fsx, wl_fixed_t fsy)
{
}
static void
pointer_button(void *data, struct wl_pointer *wl_pointer, uint32_t serial,
uint32_t time, uint32_t button, uint32_t state)
{
struct interactive_seat *seat = data;
xdg_toplevel_move(seat->inter->xdg_top, seat->wl_seat, serial);
}
static void
pointer_axis(void *data, struct wl_pointer *wl_pointer, uint32_t time,
uint32_t axis, wl_fixed_t value)
{
}
static void
pointer_frame(void *data, struct wl_pointer *wl_pointer)
{
}
static void
pointer_axis_source(void *data, struct wl_pointer *wl_pointer, uint32_t source)
{
}
static void
pointer_axis_stop(void *data, struct wl_pointer *wl_pointer, uint32_t time,
uint32_t axis)
{
}
static void
pointer_axis_discrete(void *data, struct wl_pointer *wl_pointer, uint32_t time,
int32_t discrete)
{
}
static const struct wl_pointer_listener pointer_listener = {
pointer_enter,
pointer_leave,
pointer_motion,
pointer_button,
pointer_axis,
pointer_frame,
pointer_axis_source,
pointer_axis_stop,
pointer_axis_discrete
};
static void
seat_capabilities(void *data, struct wl_seat *wl_seat, uint32_t caps)
{
struct interactive_seat *seat = data;
if (!seat->wl_kbd && (caps & WL_SEAT_CAPABILITY_KEYBOARD)) {
seat->wl_kbd = wl_seat_get_keyboard(seat->wl_seat);
wl_keyboard_add_listener(seat->wl_kbd, &kbd_listener, seat);
}
else if (seat->wl_kbd && !(caps & WL_SEAT_CAPABILITY_KEYBOARD)) {
if (seat->version >= WL_SEAT_RELEASE_SINCE_VERSION)
wl_keyboard_release(seat->wl_kbd);
else
wl_keyboard_destroy(seat->wl_kbd);
xkb_state_unref(seat->state);
xkb_keymap_unref(seat->keymap);
seat->state = NULL;
seat->keymap = NULL;
seat->wl_kbd = NULL;
}
if (!seat->wl_pointer && (caps & WL_SEAT_CAPABILITY_POINTER)) {
seat->wl_pointer = wl_seat_get_pointer(seat->wl_seat);
wl_pointer_add_listener(seat->wl_pointer, &pointer_listener,
seat);
}
else if (seat->wl_pointer && !(caps & WL_SEAT_CAPABILITY_POINTER)) {
if (seat->version >= WL_SEAT_RELEASE_SINCE_VERSION)
wl_pointer_release(seat->wl_pointer);
else
wl_pointer_destroy(seat->wl_pointer);
seat->wl_pointer = NULL;
}
}
static void
seat_name(void *data, struct wl_seat *wl_seat, const char *name)
{
struct interactive_seat *seat = data;
free(seat->name_str);
seat->name_str = strdup(name);
}
static const struct wl_seat_listener seat_listener = {
seat_capabilities,
seat_name
};
static void
seat_create(struct interactive_dpy *inter, struct wl_registry *registry,
uint32_t name, uint32_t version)
{
int ret;
struct interactive_seat *seat = calloc(1, sizeof(*seat));
seat->global_name = name;
seat->inter = inter;
seat->wl_seat = wl_registry_bind(registry, name, &wl_seat_interface,
MAX(version, 5));
wl_seat_add_listener(seat->wl_seat, &seat_listener, seat);
ret = asprintf(&seat->name_str, "seat:%d",
wl_proxy_get_id((struct wl_proxy *) seat->wl_seat));
assert(ret >= 0);
wl_list_insert(&inter->seats, &seat->link);
}
static void
seat_destroy(struct interactive_seat *seat)
{
if (seat->wl_kbd) {
if (seat->version >= WL_SEAT_RELEASE_SINCE_VERSION)
wl_keyboard_release(seat->wl_kbd);
else
wl_keyboard_destroy(seat->wl_kbd);
xkb_state_unref(seat->state);
xkb_keymap_unref(seat->keymap);
}
if (seat->wl_pointer) {
if (seat->version >= WL_SEAT_RELEASE_SINCE_VERSION)
wl_pointer_release(seat->wl_pointer);
else
wl_pointer_destroy(seat->wl_pointer);
}
if (seat->version >= WL_SEAT_RELEASE_SINCE_VERSION)
wl_seat_release(seat->wl_seat);
else
wl_seat_destroy(seat->wl_seat);
free(seat->name_str);
wl_list_remove(&seat->link);
free(seat);
}
static void
registry_global(void *data, struct wl_registry *registry, uint32_t name,
const char *interface, uint32_t version)
{
struct interactive_dpy *inter = data;
if (strcmp(interface, "wl_seat") == 0) {
seat_create(inter, registry, name, version);
}
else if (strcmp(interface, "xdg_wm_base") == 0) {
inter->shell = wl_registry_bind(registry, name,
&xdg_wm_base_interface,
MAX(version, 2));
xdg_wm_base_add_listener(inter->shell, &shell_listener, inter);
}
else if (strcmp(interface, "wl_compositor") == 0) {
inter->compositor = wl_registry_bind(registry, name,
&wl_compositor_interface,
MAX(version, 1));
}
else if (strcmp(interface, "wl_shm") == 0) {
inter->shm = wl_registry_bind(registry, name, &wl_shm_interface,
MAX(version, 1));
}
}
static void
registry_delete(void *data, struct wl_registry *registry, uint32_t name)
{
struct interactive_dpy *inter = data;
struct interactive_seat *seat, *tmp;
wl_list_for_each_safe(seat, tmp, &inter->seats, link) {
if (seat->global_name != name)
continue;
seat_destroy(seat);
}
}
static const struct wl_registry_listener registry_listener = {
registry_global,
registry_delete
};
static void
dpy_disconnect(struct interactive_dpy *inter)
{
struct interactive_seat *seat, *tmp;
wl_list_for_each_safe(seat, tmp, &inter->seats, link)
seat_destroy(seat);
if (inter->xdg_surf)
xdg_surface_destroy(inter->xdg_surf);
if (inter->xdg_top)
xdg_toplevel_destroy(inter->xdg_top);
if (inter->wl_surf)
wl_surface_destroy(inter->wl_surf);
if (inter->shell)
xdg_wm_base_destroy(inter->shell);
if (inter->compositor)
wl_compositor_destroy(inter->compositor);
if (inter->shm)
wl_shm_destroy(inter->shm);
/* Do one last roundtrip to try to destroy our wl_buffer. */
wl_display_roundtrip(inter->dpy);
xkb_context_unref(inter->ctx);
wl_display_disconnect(inter->dpy);
}
int
main(int argc, char *argv[])
{
int ret;
struct interactive_dpy inter;
struct wl_registry *registry;
setlocale(LC_ALL, "");
memset(&inter, 0, sizeof(inter));
wl_list_init(&inter.seats);
inter.dpy = wl_display_connect(NULL);
if (!inter.dpy) {
fprintf(stderr, "Couldn't connect to Wayland server\n");
ret = -1;
goto err_out;
}
inter.ctx = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
if (!inter.ctx) {
ret = -1;
fprintf(stderr, "Couldn't create xkb context\n");
goto err_out;
}
registry = wl_display_get_registry(inter.dpy);
wl_registry_add_listener(registry, &registry_listener, &inter);
/* The first roundtrip gets the list of advertised globals. */
wl_display_roundtrip(inter.dpy);
/* The second roundtrip dispatches the events sent after binding, e.g.
* after binding to wl_seat globals in the first roundtrip, we will get
* the wl_seat::capabilities event in this roundtrip. */
wl_display_roundtrip(inter.dpy);
if (!inter.shell || !inter.shm || !inter.compositor) {
fprintf(stderr, "Required Wayland interfaces %s%s%s unsupported\n",
(inter.shell) ? "" : "xdg_shell ",
(inter.shm) ? "" : "wl_shm",
(inter.compositor) ? "" : "wl_compositor");
ret = -1;
goto err_conn;
}
surface_create(&inter);
tools_disable_stdin_echo();
do {
ret = wl_display_dispatch(inter.dpy);
} while (ret >= 0 && !terminate);
tools_enable_stdin_echo();
wl_registry_destroy(registry);
err_conn:
dpy_disconnect(&inter);
err_out:
exit(ret >= 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
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