340 lines
16 KiB
XML
340 lines
16 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<protocol name="pointer_constraints_unstable_v1">
|
|
|
|
<copyright>
|
|
Copyright © 2014 Jonas Ådahl
|
|
Copyright © 2015 Red Hat Inc.
|
|
|
|
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.
|
|
</copyright>
|
|
|
|
<description summary="protocol for constraining pointer motions">
|
|
This protocol specifies a set of interfaces used for adding constraints to
|
|
the motion of a pointer. Possible constraints include confining pointer
|
|
motions to a given region, or locking it to its current position.
|
|
|
|
In order to constrain the pointer, a client must first bind the global
|
|
interface "wp_pointer_constraints" which, if a compositor supports pointer
|
|
constraints, is exposed by the registry. Using the bound global object, the
|
|
client uses the request that corresponds to the type of constraint it wants
|
|
to make. See wp_pointer_constraints for more details.
|
|
|
|
Warning! The protocol described in this file is experimental and backward
|
|
incompatible changes may be made. Backward compatible changes may be added
|
|
together with the corresponding interface version bump. Backward
|
|
incompatible changes are done by bumping the version number in the protocol
|
|
and interface names and resetting the interface version. Once the protocol
|
|
is to be declared stable, the 'z' prefix and the version number in the
|
|
protocol and interface names are removed and the interface version number is
|
|
reset.
|
|
</description>
|
|
|
|
<interface name="zwp_pointer_constraints_v1" version="1">
|
|
<description summary="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.
|
|
</description>
|
|
|
|
<enum name="error">
|
|
<description summary="wp_pointer_constraints error values">
|
|
These errors can be emitted in response to wp_pointer_constraints
|
|
requests.
|
|
</description>
|
|
<entry name="already_constrained" value="1"
|
|
summary="pointer constraint already requested on that surface"/>
|
|
</enum>
|
|
|
|
<enum name="lifetime">
|
|
<description summary="constraint lifetime">
|
|
These values represent different lifetime semantics. They are passed
|
|
as arguments to the factory requests to specify how the constraint
|
|
lifetimes should be managed.
|
|
</description>
|
|
<entry name="oneshot" value="1">
|
|
<description summary="the pointer constraint is defunct once deactivated">
|
|
A oneshot pointer constraint will never reactivate once it has been
|
|
deactivated. See the corresponding deactivation event
|
|
(wp_locked_pointer.unlocked and wp_confined_pointer.unconfined) for
|
|
details.
|
|
</description>
|
|
</entry>
|
|
<entry name="persistent" value="2">
|
|
<description summary="the pointer constraint may reactivate">
|
|
A persistent pointer constraint may again reactivate once it has
|
|
been deactivated. See the corresponding deactivation event
|
|
(wp_locked_pointer.unlocked and wp_confined_pointer.unconfined) for
|
|
details.
|
|
</description>
|
|
</entry>
|
|
</enum>
|
|
|
|
<request name="destroy" type="destructor">
|
|
<description summary="destroy the pointer constraints manager object">
|
|
Used by the client to notify the server that it will no longer use this
|
|
pointer constraints object.
|
|
</description>
|
|
</request>
|
|
|
|
<request name="lock_pointer">
|
|
<description summary="lock pointer to a position">
|
|
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.
|
|
</description>
|
|
<arg name="id" type="new_id" interface="zwp_locked_pointer_v1"/>
|
|
<arg name="surface" type="object" interface="wl_surface"
|
|
summary="surface to lock pointer to"/>
|
|
<arg name="pointer" type="object" interface="wl_pointer"
|
|
summary="the pointer that should be locked"/>
|
|
<arg name="region" type="object" interface="wl_region" allow-null="true"
|
|
summary="region of surface"/>
|
|
<arg name="lifetime" type="uint" summary="lock lifetime"/>
|
|
</request>
|
|
|
|
<request name="confine_pointer">
|
|
<description summary="confine pointer to a region">
|
|
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.
|
|
</description>
|
|
<arg name="id" type="new_id" interface="zwp_confined_pointer_v1"/>
|
|
<arg name="surface" type="object" interface="wl_surface"
|
|
summary="surface to lock pointer to"/>
|
|
<arg name="pointer" type="object" interface="wl_pointer"
|
|
summary="the pointer that should be confined"/>
|
|
<arg name="region" type="object" interface="wl_region" allow-null="true"
|
|
summary="region of surface"/>
|
|
<arg name="lifetime" type="uint" summary="confinement lifetime"/>
|
|
</request>
|
|
</interface>
|
|
|
|
<interface name="zwp_locked_pointer_v1" version="1">
|
|
<description summary="receive relative pointer motion events">
|
|
The wp_locked_pointer interface represents a locked pointer state.
|
|
|
|
While the lock of this object is active, the wl_pointer objects of the
|
|
associated seat will not emit any wl_pointer.motion events.
|
|
|
|
This object will send the event 'locked' when the lock is activated.
|
|
Whenever the lock is activated, it is guaranteed that the locked surface
|
|
will already have received pointer focus and that the pointer will be
|
|
within the region passed to the request creating this object.
|
|
|
|
To unlock the pointer, send the destroy request. This will also destroy
|
|
the wp_locked_pointer object.
|
|
|
|
If the compositor decides to unlock the pointer the unlocked event is
|
|
sent. See wp_locked_pointer.unlock for details.
|
|
|
|
When unlocking, the compositor may warp the cursor position to the set
|
|
cursor position hint. If it does, it will not result in any relative
|
|
motion events emitted via wp_relative_pointer.
|
|
|
|
If the surface the lock was requested on is destroyed and the lock is not
|
|
yet activated, the wp_locked_pointer object is now defunct and must be
|
|
destroyed.
|
|
</description>
|
|
|
|
<request name="destroy" type="destructor">
|
|
<description summary="destroy the locked pointer object">
|
|
Destroy the locked pointer object. If applicable, the compositor will
|
|
unlock the pointer.
|
|
</description>
|
|
</request>
|
|
|
|
<request name="set_cursor_position_hint">
|
|
<description summary="set the pointer cursor position hint">
|
|
Set the cursor position hint relative to the top left corner of the
|
|
surface.
|
|
|
|
If the client is drawing its own cursor, it should update the position
|
|
hint to the position of its own cursor. A compositor may use this
|
|
information to warp the pointer upon unlock in order to avoid pointer
|
|
jumps.
|
|
|
|
The cursor position hint is double buffered. The new hint will only take
|
|
effect when the associated surface gets it pending state applied. See
|
|
wl_surface.commit for details.
|
|
</description>
|
|
<arg name="surface_x" type="fixed"
|
|
summary="surface-local x coordinate"/>
|
|
<arg name="surface_y" type="fixed"
|
|
summary="surface-local y coordinate"/>
|
|
</request>
|
|
|
|
<request name="set_region">
|
|
<description summary="set a new lock region">
|
|
Set a new region used to lock the pointer.
|
|
|
|
The new lock region is double-buffered. The new lock region will
|
|
only take effect when the associated surface gets its pending state
|
|
applied. See wl_surface.commit for details.
|
|
|
|
For details about the lock region, see wp_locked_pointer.
|
|
</description>
|
|
<arg name="region" type="object" interface="wl_region" allow-null="true"
|
|
summary="region of surface"/>
|
|
</request>
|
|
|
|
<event name="locked">
|
|
<description summary="lock activation event">
|
|
Notification that the pointer lock of the seat's pointer is activated.
|
|
</description>
|
|
</event>
|
|
|
|
<event name="unlocked">
|
|
<description summary="lock deactivation event">
|
|
Notification that the pointer lock of the seat's pointer is no longer
|
|
active. If this is a oneshot pointer lock (see
|
|
wp_pointer_constraints.lifetime) this object is now defunct and should
|
|
be destroyed. If this is a persistent pointer lock (see
|
|
wp_pointer_constraints.lifetime) this pointer lock may again
|
|
reactivate in the future.
|
|
</description>
|
|
</event>
|
|
</interface>
|
|
|
|
<interface name="zwp_confined_pointer_v1" version="1">
|
|
<description summary="confined pointer object">
|
|
The wp_confined_pointer interface represents a confined pointer state.
|
|
|
|
This object will send the event 'confined' when the confinement is
|
|
activated. Whenever the confinement is activated, it is guaranteed that
|
|
the surface the pointer is confined to will already have received pointer
|
|
focus and that the pointer will be within the region passed to the request
|
|
creating this object. It is up to the compositor to decide whether this
|
|
requires some user interaction and if the pointer will warp to within the
|
|
passed region if outside.
|
|
|
|
To unconfine the pointer, send the destroy request. This will also destroy
|
|
the wp_confined_pointer object.
|
|
|
|
If the compositor decides to unconfine the pointer the unconfined event is
|
|
sent. The wp_confined_pointer object is at this point defunct and should
|
|
be destroyed.
|
|
</description>
|
|
|
|
<request name="destroy" type="destructor">
|
|
<description summary="destroy the confined pointer object">
|
|
Destroy the confined pointer object. If applicable, the compositor will
|
|
unconfine the pointer.
|
|
</description>
|
|
</request>
|
|
|
|
<request name="set_region">
|
|
<description summary="set a new confine region">
|
|
Set a new region used to confine the pointer.
|
|
|
|
The new confine region is double-buffered. The new confine region will
|
|
only take effect when the associated surface gets its pending state
|
|
applied. See wl_surface.commit for details.
|
|
|
|
If the confinement is active when the new confinement region is applied
|
|
and the pointer ends up outside of newly applied region, the pointer may
|
|
warped to a position within the new confinement region. If warped, a
|
|
wl_pointer.motion event will be emitted, but no
|
|
wp_relative_pointer.relative_motion event.
|
|
|
|
The compositor may also, instead of using the new region, unconfine the
|
|
pointer.
|
|
|
|
For details about the confine region, see wp_confined_pointer.
|
|
</description>
|
|
<arg name="region" type="object" interface="wl_region" allow-null="true"
|
|
summary="region of surface"/>
|
|
</request>
|
|
|
|
<event name="confined">
|
|
<description summary="pointer confined">
|
|
Notification that the pointer confinement of the seat's pointer is
|
|
activated.
|
|
</description>
|
|
</event>
|
|
|
|
<event name="unconfined">
|
|
<description summary="pointer unconfined">
|
|
Notification that the pointer confinement of the seat's pointer is no
|
|
longer active. If this is a oneshot pointer confinement (see
|
|
wp_pointer_constraints.lifetime) this object is now defunct and should
|
|
be destroyed. If this is a persistent pointer confinement (see
|
|
wp_pointer_constraints.lifetime) this pointer confinement may again
|
|
reactivate in the future.
|
|
</description>
|
|
</event>
|
|
</interface>
|
|
|
|
</protocol>
|