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+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="xdg_toplevel_icon_v1">
+
+  <copyright>
+    Copyright © 2023-2024 Matthias Klumpp
+    Copyright ©      2024 David Edmundson
+
+    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 to assign icons to toplevels">
+    This protocol allows clients to set icons for their toplevel surfaces
+    either via the XDG icon stock (using an icon name), or from pixel data.
+
+    A toplevel icon represents the individual toplevel (unlike the application
+    or launcher icon, which represents the application as a whole), and may be
+    shown in window switchers, window overviews and taskbars that list
+    individual windows.
+
+    This document adheres to RFC 2119 when using words like "must",
+    "should", "may", etc.
+
+    Warning! The protocol described in this file is currently in the testing
+    phase. Backward compatible changes may be added together with the
+    corresponding interface version bump. Backward incompatible changes can
+    only be done by creating a new major version of the extension.
+  </description>
+
+  <interface name="xdg_toplevel_icon_manager_v1" version="1">
+    <description summary="interface to manage toplevel icons">
+      This interface allows clients to create toplevel window icons and set
+      them on toplevel windows to be displayed to the user.
+    </description>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the toplevel icon manager">
+        Destroy the toplevel icon manager.
+        This does not destroy objects created with the manager.
+      </description>
+    </request>
+
+    <request name="create_icon">
+      <description summary="create a new icon instance">
+        Creates a new icon object. This icon can then be attached to a
+        xdg_toplevel via the 'set_icon' request.
+      </description>
+      <arg name="id" type="new_id" interface="xdg_toplevel_icon_v1"/>
+    </request>
+
+    <request name="set_icon">
+      <description summary="set an icon on a toplevel window">
+        This request assigns the icon 'icon' to 'toplevel', or clears the
+        toplevel icon if 'icon' was null.
+        This state is double-buffered and is applied on the next
+        wl_surface.commit of the toplevel.
+
+        After making this call, the xdg_toplevel_icon_v1 provided as 'icon'
+        can be destroyed by the client without 'toplevel' losing its icon.
+        The xdg_toplevel_icon_v1 is immutable from this point, and any
+        future attempts to change it must raise the
+        'xdg_toplevel_icon_v1.immutable' protocol error.
+
+        The compositor must set the toplevel icon from either the pixel data
+        the icon provides, or by loading a stock icon using the icon name.
+        See the description of 'xdg_toplevel_icon_v1' for details.
+
+        If 'icon' is set to null, the icon of the respective toplevel is reset
+        to its default icon (usually the icon of the application, derived from
+        its desktop-entry file, or a placeholder icon).
+        If this request is passed an icon with no pixel buffers or icon name
+        assigned, the icon must be reset just like if 'icon' was null.
+      </description>
+      <arg name="toplevel" type="object" interface="xdg_toplevel" summary="the toplevel to act on"/>
+      <arg name="icon" type="object" interface="xdg_toplevel_icon_v1" allow-null="true"/>
+    </request>
+
+    <event name="icon_size">
+      <description summary="describes a supported &amp; preferred icon size">
+        This event indicates an icon size the compositor prefers to be
+        available if the client has scalable icons and can render to any size.
+
+        When the 'xdg_toplevel_icon_manager_v1' object is created, the
+        compositor may send one or more 'icon_size' events to describe the list
+        of preferred icon sizes. If the compositor has no size preference, it
+        may not send any 'icon_size' event, and it is up to the client to
+        decide a suitable icon size.
+
+        A sequence of 'icon_size' events must be finished with a 'done' event.
+        If the compositor has no size preferences, it must still send the
+        'done' event, without any preceding 'icon_size' events.
+      </description>
+      <arg name="size" type="int"
+           summary="the edge size of the square icon in surface-local coordinates, e.g. 64"/>
+    </event>
+
+    <event name="done">
+      <description summary="all information has been sent">
+        This event is sent after all 'icon_size' events have been sent.
+      </description>
+    </event>
+  </interface>
+
+  <interface name="xdg_toplevel_icon_v1" version="1">
+    <description summary="a toplevel window icon">
+      This interface defines a toplevel icon.
+      An icon can have a name, and multiple buffers.
+      In order to be applied, the icon must have either a name, or at least
+      one buffer assigned. Applying an empty icon (with no buffer or name) to
+      a toplevel should reset its icon to the default icon.
+
+      It is up to compositor policy whether to prefer using a buffer or loading
+      an icon via its name. See 'set_name' and 'add_buffer' for details.
+    </description>
+
+    <enum name="error">
+      <entry name="invalid_buffer"
+             summary="the provided buffer does not satisfy requirements"
+             value="1"/>
+      <entry name="immutable"
+             summary="the icon has already been assigned to a toplevel and must not be changed"
+             value="2"/>
+      <entry name="no_buffer"
+             summary="the provided buffer has been destroyed before the toplevel icon"
+             value="3"/>
+    </enum>
+
+    <request name="destroy" type="destructor">
+      <description summary="destroy the icon object">
+        Destroys the 'xdg_toplevel_icon_v1' object.
+        The icon must still remain set on every toplevel it was assigned to,
+        until the toplevel icon is reset explicitly.
+      </description>
+    </request>
+
+    <request name="set_name">
+      <description summary="set an icon name">
+        This request assigns an icon name to this icon.
+        Any previously set name is overridden.
+
+        The compositor must resolve 'icon_name' according to the lookup rules
+        described in the XDG icon theme specification[1] using the
+        environment's current icon theme.
+
+        If the compositor does not support icon names or cannot resolve
+        'icon_name' according to the XDG icon theme specification it must
+        fall back to using pixel buffer data instead.
+
+        If this request is made after the icon has been assigned to a toplevel
+        via 'set_icon', a 'immutable' error must be raised.
+
+        [1]: https://specifications.freedesktop.org/icon-theme-spec/icon-theme-spec-latest.html
+      </description>
+      <arg name="icon_name" type="string"/>
+    </request>
+
+    <request name="add_buffer">
+      <description summary="add icon data from a pixel buffer">
+        This request adds pixel data supplied as wl_buffer to the icon.
+
+        The client should add pixel data for all icon sizes and scales that
+        it can provide, or which are explicitly requested by the compositor
+        via 'icon_size' events on xdg_toplevel_icon_manager_v1.
+
+        The wl_buffer supplying pixel data as 'buffer' must be backed by wl_shm
+        and must be a square (width and height being equal).
+        If any of these buffer requirements are not fulfilled, a 'invalid_buffer'
+        error must be raised.
+
+        If this icon instance already has a buffer of the same size and scale
+        from a previous 'add_buffer' request, data from the last request
+        overrides the preexisting pixel data.
+
+        The wl_buffer must be kept alive for as long as the xdg_toplevel_icon
+        it is associated with is not destroyed, otherwise a 'no_buffer' error
+        is raised. The buffer contents must not be modified after it was
+        assigned to the icon.
+
+        If this request is made after the icon has been assigned to a toplevel
+        via 'set_icon', a 'immutable' error must be raised.
+      </description>
+      <arg name="buffer" type="object" interface="wl_buffer"/>
+      <arg name="scale" type="int"
+           summary="the scaling factor of the icon, e.g. 1"/>
+    </request>
+  </interface>
+</protocol>