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136 lines
6.4 KiB
136 lines
6.4 KiB
<?xml version="1.0" encoding="UTF-8"?>
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<protocol name="relative_pointer_unstable_v1">
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<copyright>
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Copyright © 2014 Jonas Ådahl
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Copyright © 2015 Red Hat Inc.
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice (including the next
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paragraph) shall be included in all copies or substantial portions of the
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Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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</copyright>
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<description summary="protocol for relative pointer motion events">
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This protocol specifies a set of interfaces used for making clients able to
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receive relative pointer events not obstructed by barriers (such as the
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monitor edge or other pointer barriers).
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To start receiving relative pointer events, a client must first bind the
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global interface "wp_relative_pointer_manager" which, if a compositor
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supports relative pointer motion events, is exposed by the registry. After
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having created the relative pointer manager proxy object, the client uses
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it to create the actual relative pointer object using the
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"get_relative_pointer" request given a wl_pointer. The relative pointer
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motion events will then, when applicable, be transmitted via the proxy of
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the newly created relative pointer object. See the documentation of the
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relative pointer interface for more details.
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Warning! The protocol described in this file is experimental and backward
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incompatible changes may be made. Backward compatible changes may be added
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together with the corresponding interface version bump. Backward
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incompatible changes are done by bumping the version number in the protocol
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and interface names and resetting the interface version. Once the protocol
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is to be declared stable, the 'z' prefix and the version number in the
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protocol and interface names are removed and the interface version number is
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reset.
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</description>
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<interface name="zwp_relative_pointer_manager_v1" version="1">
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<description summary="get relative pointer objects">
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A global interface used for getting the relative pointer object for a
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given pointer.
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</description>
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<request name="destroy" type="destructor">
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<description summary="destroy the relative pointer manager object">
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Used by the client to notify the server that it will no longer use this
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relative pointer manager object.
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</description>
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</request>
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<request name="get_relative_pointer">
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<description summary="get a relative pointer object">
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Create a relative pointer interface given a wl_pointer object. See the
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wp_relative_pointer interface for more details.
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</description>
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<arg name="id" type="new_id" interface="zwp_relative_pointer_v1"/>
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<arg name="pointer" type="object" interface="wl_pointer"/>
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</request>
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</interface>
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<interface name="zwp_relative_pointer_v1" version="1">
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<description summary="relative pointer object">
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A wp_relative_pointer object is an extension to the wl_pointer interface
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used for emitting relative pointer events. It shares the same focus as
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wl_pointer objects of the same seat and will only emit events when it has
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focus.
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</description>
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<request name="destroy" type="destructor">
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<description summary="release the relative pointer object"/>
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</request>
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<event name="relative_motion">
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<description summary="relative pointer motion">
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Relative x/y pointer motion from the pointer of the seat associated with
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this object.
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A relative motion is in the same dimension as regular wl_pointer motion
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events, except they do not represent an absolute position. For example,
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moving a pointer from (x, y) to (x', y') would have the equivalent
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relative motion (x' - x, y' - y). If a pointer motion caused the
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absolute pointer position to be clipped by for example the edge of the
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monitor, the relative motion is unaffected by the clipping and will
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represent the unclipped motion.
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This event also contains non-accelerated motion deltas. The
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non-accelerated delta is, when applicable, the regular pointer motion
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delta as it was before having applied motion acceleration and other
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transformations such as normalization.
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Note that the non-accelerated delta does not represent 'raw' events as
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they were read from some device. Pointer motion acceleration is device-
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and configuration-specific and non-accelerated deltas and accelerated
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deltas may have the same value on some devices.
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Relative motions are not coupled to wl_pointer.motion events, and can be
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sent in combination with such events, but also independently. There may
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also be scenarios where wl_pointer.motion is sent, but there is no
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relative motion. The order of an absolute and relative motion event
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originating from the same physical motion is not guaranteed.
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If the client needs button events or focus state, it can receive them
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from a wl_pointer object of the same seat that the wp_relative_pointer
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object is associated with.
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</description>
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<arg name="utime_hi" type="uint"
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summary="high 32 bits of a 64 bit timestamp with microsecond granularity"/>
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<arg name="utime_lo" type="uint"
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summary="low 32 bits of a 64 bit timestamp with microsecond granularity"/>
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<arg name="dx" type="fixed"
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summary="the x component of the motion vector"/>
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<arg name="dy" type="fixed"
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summary="the y component of the motion vector"/>
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<arg name="dx_unaccel" type="fixed"
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summary="the x component of the unaccelerated motion vector"/>
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<arg name="dy_unaccel" type="fixed"
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summary="the y component of the unaccelerated motion vector"/>
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</event>
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</interface>
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</protocol>
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