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simple-touch: Handle multiple seats properly

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If simple-touch ran on a compositor with multiple seats, and the first
one happened to have the touch capability while the second one didn't,
the handler for seat capabilities would destroy the wl_touch device it
created on the first call for the first seat when it was called a again
for the second seat that has not touch capabilities.

Fix this problem by creating a separate struct for each seat.

https://bugs.freedesktop.org/show_bug.cgi?id=78365
This commit is contained in:
Ander Conselvan de Oliveira 2014-05-07 11:57:27 +03:00 committed by Kristian Høgsberg
parent 9c6217e6dc
commit c3f03f557b
1 changed files with 32 additions and 14 deletions
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46
clients/simple-touch.c
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@ -36,14 +36,18 @@
#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
struct seat {
struct touch *touch;
struct wl_seat *seat;
struct wl_touch *wl_touch;
};
struct touch {
struct wl_display *display;
struct wl_registry *registry;
struct wl_compositor *compositor;
struct wl_shell *shell;
struct wl_shm *shm;
struct wl_seat *seat;
struct wl_touch *wl_touch;
struct wl_pointer *pointer;
struct wl_keyboard *keyboard;
struct wl_surface *surface;
@ -199,18 +203,19 @@ static const struct wl_touch_listener touch_listener = {
};
static void
seat_handle_capabilities(void *data, struct wl_seat *seat,
seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
enum wl_seat_capability caps)
{
struct touch *touch = data;
struct seat *seat = data;
struct touch *touch = seat->touch;
if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !touch->wl_touch) {
touch->wl_touch = wl_seat_get_touch(seat);
wl_touch_set_user_data(touch->wl_touch, touch);
wl_touch_add_listener(touch->wl_touch, &touch_listener, touch);
} else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && touch->wl_touch) {
wl_touch_destroy(touch->wl_touch);
touch->wl_touch = NULL;
if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !seat->wl_touch) {
seat->wl_touch = wl_seat_get_touch(wl_seat);
wl_touch_set_user_data(seat->wl_touch, touch);
wl_touch_add_listener(seat->wl_touch, &touch_listener, touch);
} else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && seat->wl_touch) {
wl_touch_destroy(seat->wl_touch);
seat->wl_touch = NULL;
}
}
@ -218,6 +223,21 @@ static const struct wl_seat_listener seat_listener = {
seat_handle_capabilities,
};
static void
add_seat(struct touch *touch, uint32_t name, uint32_t version)
{
struct seat *seat;
seat = malloc(sizeof *seat);
assert(seat);
seat->touch = touch;
seat->wl_touch = NULL;
seat->seat = wl_registry_bind(touch->registry, name,
&wl_seat_interface, 1);
wl_seat_add_listener(seat->seat, &seat_listener, seat);
}
static void
handle_ping(void *data, struct wl_shell_surface *shell_surface,
uint32_t serial)
@ -261,9 +281,7 @@ handle_global(void *data, struct wl_registry *registry,
&wl_shm_interface, 1);
wl_shm_add_listener(touch->shm, &shm_listener, touch);
} else if (strcmp(interface, "wl_seat") == 0) {
touch->seat = wl_registry_bind(registry, name,
&wl_seat_interface, 1);
wl_seat_add_listener(touch->seat, &seat_listener, touch);
add_seat(touch, name, version);
}
}