Implement pointer locking and confinement
This patch implements the wp_pointer_constraints protocol used for
locking or confining a pointer. It consists of a new global object with
two requests; one for locking the surface to a position, one for
confining the pointer to a given region.
In this patch, only the locking part is fully implemented as in
specified in the protocol, while confinement is only implemented for
when the union of the passed region and the input region of the confined
surface is a single rectangle.
Note that the pointer constraints protocol is still unstable and as
such has the unstable protocol naming conventions applied.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Daniel Stone <daniels@collabora.com>
diff --git a/libweston/compositor.h b/libweston/compositor.h
index 39f39c1..ad2f6e3 100644
--- a/libweston/compositor.h
+++ b/libweston/compositor.h
@@ -59,6 +59,7 @@
struct weston_pointer;
struct linux_dmabuf_buffer;
struct weston_recorder;
+struct weston_pointer_constraint;
enum weston_keyboard_modifier {
MODIFIER_CTRL = (1 << 0),
@@ -452,6 +453,9 @@
weston_pointer_set_default_grab(struct weston_pointer *pointer,
const struct weston_pointer_grab_interface *interface);
+void
+weston_pointer_constraint_destroy(struct weston_pointer_constraint *constraint);
+
struct weston_keyboard *
weston_keyboard_create(void);
void
@@ -810,6 +814,8 @@
unsigned int activate_serial;
+ struct wl_global *pointer_constraints;
+
int exit_code;
void *user_data;
@@ -1017,6 +1023,32 @@
struct weston_seat *seat;
};
+struct weston_pointer_constraint {
+ struct wl_list link;
+
+ struct weston_surface *surface;
+ struct weston_view *view;
+ struct wl_resource *resource;
+ struct weston_pointer_grab grab;
+ struct weston_pointer *pointer;
+ uint32_t lifetime;
+
+ pixman_region32_t region;
+ pixman_region32_t region_pending;
+ bool region_is_pending;
+
+ wl_fixed_t hint_x;
+ wl_fixed_t hint_y;
+ wl_fixed_t hint_x_pending;
+ wl_fixed_t hint_y_pending;
+ bool hint_is_pending;
+
+ struct wl_listener pointer_destroy_listener;
+ struct wl_listener surface_destroy_listener;
+ struct wl_listener surface_commit_listener;
+ struct wl_listener surface_activate_listener;
+};
+
struct weston_surface {
struct wl_resource *resource;
struct wl_signal destroy_signal; /* callback argument: this surface */
@@ -1104,6 +1136,9 @@
struct weston_timeline_object timeline;
bool is_mapped;
+
+ /* An list of per seat pointer constraints. */
+ struct wl_list pointer_constraints;
};
struct weston_subsurface {