Position set/get prototype template

[samuel ammonius]

Hi,

I started a discussion a while ago about the possibility of adding position
set/get abilities to wayland, but since then I'd learned alot about how
wayland works. I had heard that wayland combines the WM and server into one
"compositor", but I thought wayland itself still managed some things. Since
then I've learned that the compositor manages every event that a wayland
client sends, and I think this makes the ability to set/get a position even
more necessary. The reasons are:

   1. Apps can send both the position they want for a window and and the
   type of window, and a compositor can choose which one to follow. (for
   example, a client can send (width/2, height/2) and "popup" for a popup
   surface, and compositors that prefer to follow the descriptive design will
   follow "popup" and ones that prefer prescriptive design will follow the
   coordinates).
   2. Waylands asynchronous event system means that a compositor can ask
   users if they would like to give an app permission to move itself and/or
   other windows, similar to how android asks before giving apps camera/GPS
   permissions.

I've looked at existing wayland protocols and used them to create a simple
one for position set/get.

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<?xml version="1.0" encoding="UTF-8"?><protocol
name="pos_unstable_v1">  <copyright>    Copyright © 2022 Samuel
Ammonius    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>

<interface name="zwp_pos_v1" version="1">    <description
summary="position management protocol">      Used to set/get the
position of a surface. The ability to set the monitor that a surface
is on is not available yet.


      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>

    <request name="set_pos">      <description summary="position
setter">	Set the position of a surface      </description>

      <arg name="surface" type="object" interface="wl_surface"	
summary="target surface"/>

      <arg name="x" type="int"/>

      <arg name="y" type="int"/>

</request> <event name="pos_changed"> <description summary="position
changed event"> Notification that a surface has been moved, either by
itself, another program, or the compositor.

        WARNING: Do not use this event to force a surface to a certain
position. If multiple apps want the surface in a different position,
then the computer may freeze or glitch.

      </description>

      <arg name="x" type="int"/>

      <arg name="y" type="int"/>

    </event>

    <event name="get_pos">

      <arg name="x" type="int"/>

      <arg name="y" type="int"/>

    </event>

</interface>

</protocol>

------------------------------------------------------------------------------------------

Should I just send it or is my reasoning (or XML syntax) wrong?
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