Provided by: waylandpp-dev_1.0.0-5ubuntu2_amd64 
NAME
wayland::zwp_pointer_constraints_v1_t - constrain the movement of a pointer
SYNOPSIS
#include <wayland-client-protocol-unstable.hpp>
Inherits wayland::proxy_t.
Public Types
enum class wrapper_type { standard, display, foreign, proxy_wrapper }
Public Member Functions
zwp_locked_pointer_v1_t lock_pointer (surface_t const &surface, pointer_t const &pointer, region_t const
®ion, zwp_pointer_constraints_v1_lifetime const &lifetime)
lock pointer to a position
zwp_confined_pointer_v1_t confine_pointer (surface_t const &surface, pointer_t const &pointer, region_t
const ®ion, zwp_pointer_constraints_v1_lifetime const &lifetime)
confine pointer to a region
uint32_t get_id () const
Get the id of a proxy object.
std::string get_class () const
Get the interface name (class) of a proxy object.
uint32_t get_version () const
Get the protocol object version of a proxy object.
wrapper_type get_wrapper_type () const
Get the type of a proxy object.
void set_queue (event_queue_t queue)
Assign a proxy to an event queue.
wl_proxy * c_ptr () const
Get a pointer to the underlying C struct.
bool proxy_has_object () const
Check whether this wrapper actually wraps an object.
operator bool () const
Check whether this wrapper actually wraps an object.
bool operator== (const proxy_t &right) const
Check whether two wrappers refer to the same object.
bool operator!= (const proxy_t &right) const
Check whether two wrappers refer to different objects.
void proxy_release ()
Release the wrapped object (if any), making this an empty wrapper.
Static Public Attributes
static constexpr std::uint32_t lock_pointer_since_version = 1
Minimum protocol version required for the lock_pointer function.
static constexpr std::uint32_t confine_pointer_since_version = 1
Minimum protocol version required for the confine_pointer function.
Detailed Description
constrain the movement of a pointer
The global interface exposing pointer constraining functionality. It exposes two requests: lock_pointer
for locking the pointer to its position, and confine_pointer for locking the pointer to a region.
The lock_pointer and confine_pointer requests create the objects wp_locked_pointer and
wp_confined_pointer respectively, and the client can use these objects to interact with the lock.
For any surface, only one lock or confinement may be active across all wl_pointer objects of the same
seat. If a lock or confinement is requested when another lock or confinement is active or requested on
the same surface and with any of the wl_pointer objects of the same seat, an 'already_constrained' error
will be raised.
Definition at line 2452 of file wayland-client-protocol-unstable.hpp.
Member Enumeration Documentation
enum class wayland::proxy_t::wrapper_type [strong], [inherited]
Underlying wl_proxy type and properties of a proxy_t that affect construction, destruction, and event
handling
Enumerator
standard
C pointer is a standard type compatible with wl_proxy*. Events are dispatched and it is destructed
when the proxy_t is destructed. User data is set.
display
C pointer is a wl_display*. No events are dispatched, wl_display_disconnect is called when the
proxy_t is destructed. User data is set.
foreign
C pointer is a standard type compatible with wl_proxy*, but another library owns it and it should
not be touched in a way that could affect the operation of the other library. No events are
dispatched, wl_proxy_destroy is not called when the proxy_t is destructed, user data is not
touched. Consequently, there is no reference counting for the proxy_t. Lifetime of such wrappers
should preferably be short to minimize the chance that the owning library decides to destroy the
wl_proxy.
proxy_wrapper
C pointer is a wl_proxy* that was constructed with wl_proxy_create_wrapper. No events are
dispatched, wl_proxy_wrapper_destroy is called when the proxy_t is destroyed. Reference counting
is active. A reference to the proxy_t creating this proxy wrapper is held to extend its lifetime
until after the proxy wrapper is destroyed.
Definition at line 116 of file wayland-client.hpp.
Member Function Documentation
wl_proxy * wayland::proxy_t::c_ptr () const [inherited]
Get a pointer to the underlying C struct.
Returns
The underlying wl_proxy wrapped by this proxy_t if it exists, otherwise an exception is thrown
zwp_confined_pointer_v1_t zwp_pointer_constraints_v1_t::confine_pointer (surface_t const & surface, pointer_t
const & pointer, region_t const & region, zwp_pointer_constraints_v1_lifetime const & lifetime)
confine pointer to a region
Parameters
surface surface to lock pointer to
pointer the pointer that should be confined
region region of surface
lifetime confinement lifetime
The confine_pointer request lets the client request to confine the pointer cursor to a given region. This
request may not take effect immediately; in the future, when the compositor deems implementation-
specific constraints are satisfied, the pointer confinement will be activated and the compositor sends a
confined event.
The intersection of the region passed with this request and the input region of the surface is used to
determine where the pointer must be in order for the confinement to activate. It is up to the compositor
whether to warp the pointer or require some kind of user interaction for the confinement to activate. If
the region is null the surface input region is used.
The request will create a new object wp_confined_pointer which is used to interact with the confinement
as well as receive updates about its state. See the the description of wp_confined_pointer for further
information.
Definition at line 5762 of file wayland-client-protocol-unstable.cpp.
std::string wayland::proxy_t::get_class () const [inherited]
Get the interface name (class) of a proxy object.
Returns
The interface name of the object associated with the proxy
uint32_t wayland::proxy_t::get_id () const [inherited]
Get the id of a proxy object.
Returns
The id the object associated with the proxy
uint32_t wayland::proxy_t::get_version () const [inherited]
Get the protocol object version of a proxy object. Gets the protocol object version of a proxy object, or
0 if the proxy was created with unversioned API.
A returned value of 0 means that no version information is available, so the caller must make safe
assumptions about the object's real version.
display_t will always return version 0.
Returns
The protocol object version of the proxy or 0
wrapper_type wayland::proxy_t::get_wrapper_type () const [inline], [inherited]
Get the type of a proxy object.
Definition at line 302 of file wayland-client.hpp.
zwp_locked_pointer_v1_t zwp_pointer_constraints_v1_t::lock_pointer (surface_t const & surface, pointer_t
const & pointer, region_t const & region, zwp_pointer_constraints_v1_lifetime const & lifetime)
lock pointer to a position
Parameters
surface surface to lock pointer to
pointer the pointer that should be locked
region region of surface
lifetime lock lifetime
The lock_pointer request lets the client request to disable movements of the virtual pointer (i.e. the
cursor), effectively locking the pointer to a position. This request may not take effect immediately; in
the future, when the compositor deems implementation-specific constraints are satisfied, the pointer lock
will be activated and the compositor sends a locked event.
The protocol provides no guarantee that the constraints are ever satisfied, and does not require the
compositor to send an error if the constraints cannot ever be satisfied. It is thus possible to request a
lock that will never activate.
There may not be another pointer constraint of any kind requested or active on the surface for any of the
wl_pointer objects of the seat of the passed pointer when requesting a lock. If there is, an error will
be raised. See general pointer lock documentation for more details.
The intersection of the region passed with this request and the input region of the surface is used to
determine where the pointer must be in order for the lock to activate. It is up to the compositor whether
to warp the pointer or require some kind of user interaction for the lock to activate. If the region is
null the surface input region is used.
A surface may receive pointer focus without the lock being activated.
The request creates a new object wp_locked_pointer which is used to interact with the lock as well as
receive updates about its state. See the the description of wp_locked_pointer for further information.
Note that while a pointer is locked, the wl_pointer objects of the corresponding seat will not emit any
wl_pointer.motion events, but relative motion events will still be emitted via wp_relative_pointer
objects of the same seat. wl_pointer.axis and wl_pointer.button events are unaffected.
Definition at line 5755 of file wayland-client-protocol-unstable.cpp.
wayland::proxy_t::operator bool () const [inherited]
Check whether this wrapper actually wraps an object.
Returns
true if there is an underlying object, false if this wrapper is empty
bool wayland::proxy_t::operator!= (const proxy_t & right) const [inherited]
Check whether two wrappers refer to different objects.
bool wayland::proxy_t::operator== (const proxy_t & right) const [inherited]
Check whether two wrappers refer to the same object.
bool wayland::proxy_t::proxy_has_object () const [inherited]
Check whether this wrapper actually wraps an object.
Returns
true if there is an underlying object, false if this wrapper is empty
void wayland::proxy_t::proxy_release () [inherited]
Release the wrapped object (if any), making this an empty wrapper. Note that display_t instances cannot
be released this way. Attempts to do so are ignored.
Examples
foreign_display.cpp.
void wayland::proxy_t::set_queue (event_queue_t queue) [inherited]
Assign a proxy to an event queue.
Parameters
queue The event queue that will handle this proxy
Assign proxy to event queue. Events coming from proxy will be queued in queue instead of the display's
main queue.
See also: display_t::dispatch_queue().
Examples
proxy_wrapper.cpp.
Member Data Documentation
constexpr std::uint32_t wayland::zwp_pointer_constraints_v1_t::confine_pointer_since_version = 1 [static],
[constexpr]
Minimum protocol version required for the confine_pointer function.
Definition at line 2551 of file wayland-client-protocol-unstable.hpp.
constexpr std::uint32_t wayland::zwp_pointer_constraints_v1_t::lock_pointer_since_version = 1 [static],
[constexpr]
Minimum protocol version required for the lock_pointer function.
Definition at line 2520 of file wayland-client-protocol-unstable.hpp.
Author
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