Milestone 5: deliver embedded RDP sessions and lifecycle hardening

This commit is contained in:
Keith Smith
2026-03-03 18:59:26 -07:00
parent 230a401386
commit 36006bd4aa
2941 changed files with 724359 additions and 77 deletions

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<?xml version="1.0" encoding="UTF-8"?>
<protocol name="fullscreen_shell_unstable_v1">
<interface name="zwp_fullscreen_shell_v1" version="1">
<description summary="displays a single surface per output">
Displays a single surface per output.
This interface provides a mechanism for a single client to display
simple full-screen surfaces. While there technically may be multiple
clients bound to this interface, only one of those clients should be
shown at a time.
To present a surface, the client uses either the present_surface or
present_surface_for_mode requests. Presenting a surface takes effect
on the next wl_surface.commit. See the individual requests for
details about scaling and mode switches.
The client can have at most one surface per output at any time.
Requesting a surface to be presented on an output that already has a
surface replaces the previously presented surface. Presenting a null
surface removes its content and effectively disables the output.
Exactly what happens when an output is "disabled" is
compositor-specific. The same surface may be presented on multiple
outputs simultaneously.
Once a surface is presented on an output, it stays on that output
until either the client removes it or the compositor destroys the
output. This way, the client can update the output's contents by
simply attaching a new buffer.
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="release" type="destructor">
<description summary="release the wl_fullscreen_shell interface">
Release the binding from the wl_fullscreen_shell interface.
This destroys the server-side object and frees this binding. If
the client binds to wl_fullscreen_shell multiple times, it may wish
to free some of those bindings.
</description>
</request>
<enum name="capability">
<description summary="capabilities advertised by the compositor">
Various capabilities that can be advertised by the compositor. They
are advertised one-at-a-time when the wl_fullscreen_shell interface is
bound. See the wl_fullscreen_shell.capability event for more details.
ARBITRARY_MODES:
This is a hint to the client that indicates that the compositor is
capable of setting practically any mode on its outputs. If this
capability is provided, wl_fullscreen_shell.present_surface_for_mode
will almost never fail and clients should feel free to set whatever
mode they like. If the compositor does not advertise this, it may
still support some modes that are not advertised through wl_global.mode
but it is less likely.
CURSOR_PLANE:
This is a hint to the client that indicates that the compositor can
handle a cursor surface from the client without actually compositing.
This may be because of a hardware cursor plane or some other mechanism.
If the compositor does not advertise this capability then setting
wl_pointer.cursor may degrade performance or be ignored entirely. If
CURSOR_PLANE is not advertised, it is recommended that the client draw
its own cursor and set wl_pointer.cursor(NULL).
</description>
<entry name="arbitrary_modes" value="1" summary="compositor is capable of almost any output mode"/>
<entry name="cursor_plane" value="2" summary="compositor has a separate cursor plane"/>
</enum>
<event name="capability">
<description summary="advertises a capability of the compositor">
Advertises a single capability of the compositor.
When the wl_fullscreen_shell interface is bound, this event is emitted
once for each capability advertised. Valid capabilities are given by
the wl_fullscreen_shell.capability enum. If clients want to take
advantage of any of these capabilities, they should use a
wl_display.sync request immediately after binding to ensure that they
receive all the capability events.
</description>
<arg name="capability" type="uint"/>
</event>
<enum name="present_method">
<description summary="different method to set the surface fullscreen">
Hints to indicate to the compositor how to deal with a conflict
between the dimensions of the surface and the dimensions of the
output. The compositor is free to ignore this parameter.
</description>
<entry name="default" value="0" summary="no preference, apply default policy"/>
<entry name="center" value="1" summary="center the surface on the output"/>
<entry name="zoom" value="2" summary="scale the surface, preserving aspect ratio, to the largest size that will fit on the output" />
<entry name="zoom_crop" value="3" summary="scale the surface, preserving aspect ratio, to fully fill the output cropping if needed" />
<entry name="stretch" value="4" summary="scale the surface to the size of the output ignoring aspect ratio" />
</enum>
<request name="present_surface">
<description summary="present surface for display">
Present a surface on the given output.
If the output is null, the compositor will present the surface on
whatever display (or displays) it thinks best. In particular, this
may replace any or all surfaces currently presented so it should
not be used in combination with placing surfaces on specific
outputs.
The method parameter is a hint to the compositor for how the surface
is to be presented. In particular, it tells the compositor how to
handle a size mismatch between the presented surface and the
output. The compositor is free to ignore this parameter.
The "zoom", "zoom_crop", and "stretch" methods imply a scaling
operation on the surface. This will override any kind of output
scaling, so the buffer_scale property of the surface is effectively
ignored.
</description>
<arg name="surface" type="object" interface="wl_surface" allow-null="true"/>
<arg name="method" type="uint"/>
<arg name="output" type="object" interface="wl_output" allow-null="true"/>
</request>
<request name="present_surface_for_mode">
<description summary="present surface for display at a particular mode">
Presents a surface on the given output for a particular mode.
If the current size of the output differs from that of the surface,
the compositor will attempt to change the size of the output to
match the surface. The result of the mode-switch operation will be
returned via the provided wl_fullscreen_shell_mode_feedback object.
If the current output mode matches the one requested or if the
compositor successfully switches the mode to match the surface,
then the mode_successful event will be sent and the output will
contain the contents of the given surface. If the compositor
cannot match the output size to the surface size, the mode_failed
will be sent and the output will contain the contents of the
previously presented surface (if any). If another surface is
presented on the given output before either of these has a chance
to happen, the present_cancelled event will be sent.
Due to race conditions and other issues unknown to the client, no
mode-switch operation is guaranteed to succeed. However, if the
mode is one advertised by wl_output.mode or if the compositor
advertises the ARBITRARY_MODES capability, then the client should
expect that the mode-switch operation will usually succeed.
If the size of the presented surface changes, the resulting output
is undefined. The compositor may attempt to change the output mode
to compensate. However, there is no guarantee that a suitable mode
will be found and the client has no way to be notified of success
or failure.
The framerate parameter specifies the desired framerate for the
output in mHz. The compositor is free to ignore this parameter. A
value of 0 indicates that the client has no preference.
If the value of wl_output.scale differs from wl_surface.buffer_scale,
then the compositor may choose a mode that matches either the buffer
size or the surface size. In either case, the surface will fill the
output.
</description>
<arg name="surface" type="object" interface="wl_surface"/>
<arg name="output" type="object" interface="wl_output"/>
<arg name="framerate" type="int"/>
<arg name="feedback" type="new_id" interface="zwp_fullscreen_shell_mode_feedback_v1"/>
</request>
<enum name="error">
<description summary="wl_fullscreen_shell error values">
These errors can be emitted in response to wl_fullscreen_shell requests.
</description>
<entry name="invalid_method" value="0" summary="present_method is not known"/>
</enum>
</interface>
<interface name="zwp_fullscreen_shell_mode_feedback_v1" version="1">
<event name="mode_successful">
<description summary="mode switch succeeded">
This event indicates that the attempted mode switch operation was
successful. A surface of the size requested in the mode switch
will fill the output without scaling.
Upon receiving this event, the client should destroy the
wl_fullscreen_shell_mode_feedback object.
</description>
</event>
<event name="mode_failed">
<description summary="mode switch failed">
This event indicates that the attempted mode switch operation
failed. This may be because the requested output mode is not
possible or it may mean that the compositor does not want to allow it.
Upon receiving this event, the client should destroy the
wl_fullscreen_shell_mode_feedback object.
</description>
</event>
<event name="present_cancelled">
<description summary="mode switch cancelled">
This event indicates that the attempted mode switch operation was
cancelled. Most likely this is because the client requested a
second mode switch before the first one completed.
Upon receiving this event, the client should destroy the
wl_fullscreen_shell_mode_feedback object.
</description>
</event>
</interface>
</protocol>

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<?xml version="1.0" encoding="UTF-8"?>
<protocol name="ivi_application">
<copyright>
Copyright (C) 2013 DENSO CORPORATION
Copyright (c) 2013 BMW Car IT GmbH
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="ivi_surface" version="1">
<description summary="application interface to surface in ivi compositor"/>
<request name="destroy" type="destructor">
<description summary="destroy ivi_surface">
This removes link from ivi_id to wl_surface and destroys ivi_surface.
The ID, ivi_id, is free and can be used for surface_create again.
</description>
</request>
<event name="configure">
<description summary="suggest resize">
The configure event asks the client to resize its surface.
The size is a hint, in the sense that the client is free to
ignore it if it doesn't resize, pick a smaller size (to
satisfy aspect ratio or resize in steps of NxM pixels).
The client is free to dismiss all but the last configure
event it received.
The width and height arguments specify the size of the window
in surface local coordinates.
</description>
<arg name="width" type="int"/>
<arg name="height" type="int"/>
</event>
</interface>
<interface name="ivi_application" version="1">
<description summary="create ivi-style surfaces">
This interface is exposed as a global singleton.
This interface is implemented by servers that provide IVI-style user interfaces.
It allows clients to associate a ivi_surface with wl_surface.
</description>
<enum name="error">
<entry name="role" value="0" summary="given wl_surface has another role"/>
<entry name="ivi_id" value="1" summary="given ivi_id is assigned to another wl_surface"/>
</enum>
<request name="surface_create">
<description summary="create ivi_surface with numeric ID in ivi compositor">
This request gives the wl_surface the role of an IVI Surface. Creating more than
one ivi_surface for a wl_surface is not allowed. Note, that this still allows the
following example:
1. create a wl_surface
2. create ivi_surface for the wl_surface
3. destroy the ivi_surface
4. create ivi_surface for the wl_surface (with the same or another ivi_id as before)
surface_create will create a interface:ivi_surface with numeric ID; ivi_id in
ivi compositor. These ivi_ids are defined as unique in the system to identify
it inside of ivi compositor. The ivi compositor implements business logic how to
set properties of the surface with ivi_id according to status of the system.
E.g. a unique ID for Car Navigation application is used for implementing special
logic of the application about where it shall be located.
The server regards following cases as protocol errors and disconnects the client.
- wl_surface already has an nother role.
- ivi_id is already assigned to an another wl_surface.
If client destroys ivi_surface or wl_surface which is assigned to the ivi_surface,
ivi_id which is assigned to the ivi_surface is free for reuse.
</description>
<arg name="ivi_id" type="uint"/>
<arg name="surface" type="object" interface="wl_surface"/>
<arg name="id" type="new_id" interface="ivi_surface"/>
</request>
</interface>
</protocol>

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<?xml version="1.0" encoding="UTF-8"?>
<protocol name="keyboard_shortcuts_inhibit_unstable_v1">
<copyright>
Copyright © 2017 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 inhibiting the compositor keyboard shortcuts">
This protocol specifies a way for a client to request the compositor
to ignore its own keyboard shortcuts for a given seat, so that all
key events from that seat get forwarded to a surface.
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_keyboard_shortcuts_inhibit_manager_v1" version="1">
<description summary="context object for keyboard grab_manager">
A global interface used for inhibiting the compositor keyboard shortcuts.
</description>
<request name="destroy" type="destructor">
<description summary="destroy the keyboard shortcuts inhibitor object">
Destroy the keyboard shortcuts inhibitor manager.
</description>
</request>
<request name="inhibit_shortcuts">
<description summary="create a new keyboard shortcuts inhibitor object">
Create a new keyboard shortcuts inhibitor object associated with
the given surface for the given seat.
If shortcuts are already inhibited for the specified seat and surface,
a protocol error "already_inhibited" is raised by the compositor.
</description>
<arg name="id" type="new_id" interface="zwp_keyboard_shortcuts_inhibitor_v1"/>
<arg name="surface" type="object" interface="wl_surface"
summary="the surface that inhibits the keyboard shortcuts behavior"/>
<arg name="seat" type="object" interface="wl_seat"
summary="the wl_seat for which keyboard shortcuts should be disabled"/>
</request>
<enum name="error">
<entry name="already_inhibited"
value="0"
summary="the shortcuts are already inhibited for this surface"/>
</enum>
</interface>
<interface name="zwp_keyboard_shortcuts_inhibitor_v1" version="1">
<description summary="context object for keyboard shortcuts inhibitor">
A keyboard shortcuts inhibitor instructs the compositor to ignore
its own keyboard shortcuts when the associated surface has keyboard
focus. As a result, when the surface has keyboard focus on the given
seat, it will receive all key events originating from the specified
seat, even those which would normally be caught by the compositor for
its own shortcuts.
The Wayland compositor is however under no obligation to disable
all of its shortcuts, and may keep some special key combo for its own
use, including but not limited to one allowing the user to forcibly
restore normal keyboard events routing in the case of an unwilling
client. The compositor may also use the same key combo to reactivate
an existing shortcut inhibitor that was previously deactivated on
user request.
When the compositor restores its own keyboard shortcuts, an
"inactive" event is emitted to notify the client that the keyboard
shortcuts inhibitor is not effectively active for the surface and
seat any more, and the client should not expect to receive all
keyboard events.
When the keyboard shortcuts inhibitor is inactive, the client has
no way to forcibly reactivate the keyboard shortcuts inhibitor.
The user can chose to re-enable a previously deactivated keyboard
shortcuts inhibitor using any mechanism the compositor may offer,
in which case the compositor will send an "active" event to notify
the client.
If the surface is destroyed, unmapped, or loses the seat's keyboard
focus, the keyboard shortcuts inhibitor becomes irrelevant and the
compositor will restore its own keyboard shortcuts but no "inactive"
event is emitted in this case.
</description>
<request name="destroy" type="destructor">
<description summary="destroy the keyboard shortcuts inhibitor object">
Remove the keyboard shortcuts inhibitor from the associated wl_surface.
</description>
</request>
<event name="active">
<description summary="shortcuts are inhibited">
This event indicates that the shortcut inhibitor is active.
The compositor sends this event every time compositor shortcuts
are inhibited on behalf of the surface. When active, the client
may receive input events normally reserved by the compositor
(see zwp_keyboard_shortcuts_inhibitor_v1).
This occurs typically when the initial request "inhibit_shortcuts"
first becomes active or when the user instructs the compositor to
re-enable and existing shortcuts inhibitor using any mechanism
offered by the compositor.
</description>
</event>
<event name="inactive">
<description summary="shortcuts are restored">
This event indicates that the shortcuts inhibitor is inactive,
normal shortcuts processing is restored by the compositor.
</description>
</event>
</interface>
</protocol>

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<?xml version="1.0" encoding="UTF-8"?>
<protocol name="server_decoration">
<copyright><![CDATA[
Copyright (C) 2015 Martin Gräßlin
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
]]></copyright>
<interface name="org_kde_kwin_server_decoration_manager" version="1">
<description summary="Server side window decoration manager">
This interface allows to coordinate whether the server should create
a server-side window decoration around a wl_surface representing a
shell surface (wl_shell_surface or similar). By announcing support
for this interface the server indicates that it supports server
side decorations.
Use in conjunction with zxdg_decoration_manager_v1 is undefined.
</description>
<request name="create">
<description summary="Create a server-side decoration object for a given surface">
When a client creates a server-side decoration object it indicates
that it supports the protocol. The client is supposed to tell the
server whether it wants server-side decorations or will provide
client-side decorations.
If the client does not create a server-side decoration object for
a surface the server interprets this as lack of support for this
protocol and considers it as client-side decorated. Nevertheless a
client-side decorated surface should use this protocol to indicate
to the server that it does not want a server-side deco.
</description>
<arg name="id" type="new_id" interface="org_kde_kwin_server_decoration"/>
<arg name="surface" type="object" interface="wl_surface"/>
</request>
<enum name="mode">
<description summary="Possible values to use in request_mode and the event mode."/>
<entry name="None" value="0" summary="Undecorated: The surface is not decorated at all, neither server nor client-side. An example is a popup surface which should not be decorated."/>
<entry name="Client" value="1" summary="Client-side decoration: The decoration is part of the surface and the client."/>
<entry name="Server" value="2" summary="Server-side decoration: The server embeds the surface into a decoration frame."/>
</enum>
<event name="default_mode">
<description summary="The default mode used on the server">
This event is emitted directly after binding the interface. It contains
the default mode for the decoration. When a new server decoration object
is created this new object will be in the default mode until the first
request_mode is requested.
The server may change the default mode at any time.
</description>
<arg name="mode" type="uint" summary="The default decoration mode applied to newly created server decorations."/>
</event>
</interface>
<interface name="org_kde_kwin_server_decoration" version="1">
<request name="release" type="destructor">
<description summary="release the server decoration object"/>
</request>
<enum name="mode">
<description summary="Possible values to use in request_mode and the event mode."/>
<entry name="None" value="0" summary="Undecorated: The surface is not decorated at all, neither server nor client-side. An example is a popup surface which should not be decorated."/>
<entry name="Client" value="1" summary="Client-side decoration: The decoration is part of the surface and the client."/>
<entry name="Server" value="2" summary="Server-side decoration: The server embeds the surface into a decoration frame."/>
</enum>
<request name="request_mode">
<description summary="The decoration mode the surface wants to use."/>
<arg name="mode" type="uint" summary="The mode this surface wants to use."/>
</request>
<event name="mode">
<description summary="The new decoration mode applied by the server">
This event is emitted directly after the decoration is created and
represents the base decoration policy by the server. E.g. a server
which wants all surfaces to be client-side decorated will send Client,
a server which wants server-side decoration will send Server.
The client can request a different mode through the decoration request.
The server will acknowledge this by another event with the same mode. So
even if a server prefers server-side decoration it's possible to force a
client-side decoration.
The server may emit this event at any time. In this case the client can
again request a different mode. It's the responsibility of the server to
prevent a feedback loop.
</description>
<arg name="mode" type="uint" summary="The decoration mode applied to the surface by the server."/>
</event>
</interface>
</protocol>

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<?xml version="1.0" encoding="UTF-8"?>
<protocol name="viewporter">
<copyright>
Copyright © 2013-2016 Collabora, Ltd.
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="wp_viewporter" version="1">
<description summary="surface cropping and scaling">
The global interface exposing surface cropping and scaling
capabilities is used to instantiate an interface extension for a
wl_surface object. This extended interface will then allow
cropping and scaling the surface contents, effectively
disconnecting the direct relationship between the buffer and the
surface size.
</description>
<request name="destroy" type="destructor">
<description summary="unbind from the cropping and scaling interface">
Informs the server that the client will not be using this
protocol object anymore. This does not affect any other objects,
wp_viewport objects included.
</description>
</request>
<enum name="error">
<entry name="viewport_exists" value="0"
summary="the surface already has a viewport object associated"/>
</enum>
<request name="get_viewport">
<description summary="extend surface interface for crop and scale">
Instantiate an interface extension for the given wl_surface to
crop and scale its content. If the given wl_surface already has
a wp_viewport object associated, the viewport_exists
protocol error is raised.
</description>
<arg name="id" type="new_id" interface="wp_viewport"
summary="the new viewport interface id"/>
<arg name="surface" type="object" interface="wl_surface"
summary="the surface"/>
</request>
</interface>
<interface name="wp_viewport" version="1">
<description summary="crop and scale interface to a wl_surface">
An additional interface to a wl_surface object, which allows the
client to specify the cropping and scaling of the surface
contents.
This interface works with two concepts: the source rectangle (src_x,
src_y, src_width, src_height), and the destination size (dst_width,
dst_height). The contents of the source rectangle are scaled to the
destination size, and content outside the source rectangle is ignored.
This state is double-buffered, and is applied on the next
wl_surface.commit.
The two parts of crop and scale state are independent: the source
rectangle, and the destination size. Initially both are unset, that
is, no scaling is applied. The whole of the current wl_buffer is
used as the source, and the surface size is as defined in
wl_surface.attach.
If the destination size is set, it causes the surface size to become
dst_width, dst_height. The source (rectangle) is scaled to exactly
this size. This overrides whatever the attached wl_buffer size is,
unless the wl_buffer is NULL. If the wl_buffer is NULL, the surface
has no content and therefore no size. Otherwise, the size is always
at least 1x1 in surface local coordinates.
If the source rectangle is set, it defines what area of the wl_buffer is
taken as the source. If the source rectangle is set and the destination
size is not set, then src_width and src_height must be integers, and the
surface size becomes the source rectangle size. This results in cropping
without scaling. If src_width or src_height are not integers and
destination size is not set, the bad_size protocol error is raised when
the surface state is applied.
The coordinate transformations from buffer pixel coordinates up to
the surface-local coordinates happen in the following order:
1. buffer_transform (wl_surface.set_buffer_transform)
2. buffer_scale (wl_surface.set_buffer_scale)
3. crop and scale (wp_viewport.set*)
This means, that the source rectangle coordinates of crop and scale
are given in the coordinates after the buffer transform and scale,
i.e. in the coordinates that would be the surface-local coordinates
if the crop and scale was not applied.
If src_x or src_y are negative, the bad_value protocol error is raised.
Otherwise, if the source rectangle is partially or completely outside of
the non-NULL wl_buffer, then the out_of_buffer protocol error is raised
when the surface state is applied. A NULL wl_buffer does not raise the
out_of_buffer error.
If the wl_surface associated with the wp_viewport is destroyed,
all wp_viewport requests except 'destroy' raise the protocol error
no_surface.
If the wp_viewport object is destroyed, the crop and scale
state is removed from the wl_surface. The change will be applied
on the next wl_surface.commit.
</description>
<request name="destroy" type="destructor">
<description summary="remove scaling and cropping from the surface">
The associated wl_surface's crop and scale state is removed.
The change is applied on the next wl_surface.commit.
</description>
</request>
<enum name="error">
<entry name="bad_value" value="0"
summary="negative or zero values in width or height"/>
<entry name="bad_size" value="1"
summary="destination size is not integer"/>
<entry name="out_of_buffer" value="2"
summary="source rectangle extends outside of the content area"/>
<entry name="no_surface" value="3"
summary="the wl_surface was destroyed"/>
</enum>
<request name="set_source">
<description summary="set the source rectangle for cropping">
Set the source rectangle of the associated wl_surface. See
wp_viewport for the description, and relation to the wl_buffer
size.
If all of x, y, width and height are -1.0, the source rectangle is
unset instead. Any other set of values where width or height are zero
or negative, or x or y are negative, raise the bad_value protocol
error.
The crop and scale state is double-buffered state, and will be
applied on the next wl_surface.commit.
</description>
<arg name="x" type="fixed" summary="source rectangle x"/>
<arg name="y" type="fixed" summary="source rectangle y"/>
<arg name="width" type="fixed" summary="source rectangle width"/>
<arg name="height" type="fixed" summary="source rectangle height"/>
</request>
<request name="set_destination">
<description summary="set the surface size for scaling">
Set the destination size of the associated wl_surface. See
wp_viewport for the description, and relation to the wl_buffer
size.
If width is -1 and height is -1, the destination size is unset
instead. Any other pair of values for width and height that
contains zero or negative values raises the bad_value protocol
error.
The crop and scale state is double-buffered state, and will be
applied on the next wl_surface.commit.
</description>
<arg name="width" type="int" summary="surface width"/>
<arg name="height" type="int" summary="surface height"/>
</request>
</interface>
</protocol>

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<?xml version="1.0" encoding="UTF-8"?>
<protocol name="xdg_decoration_unstable_v1">
<copyright>
Copyright © 2018 Simon Ser
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="zxdg_decoration_manager_v1" version="1">
<description summary="window decoration manager">
This interface allows a compositor to announce support for server-side
decorations.
A window decoration is a set of window controls as deemed appropriate by
the party managing them, such as user interface components used to move,
resize and change a window's state.
A client can use this protocol to request being decorated by a supporting
compositor.
If compositor and client do not negotiate the use of a server-side
decoration using this protocol, clients continue to self-decorate as they
see fit.
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="destroy" type="destructor">
<description summary="destroy the decoration manager object">
Destroy the decoration manager. This doesn't destroy objects created
with the manager.
</description>
</request>
<request name="get_toplevel_decoration">
<description summary="create a new toplevel decoration object">
Create a new decoration object associated with the given toplevel.
Creating an xdg_toplevel_decoration from an xdg_toplevel which has a
buffer attached or committed is a client error, and any attempts by a
client to attach or manipulate a buffer prior to the first
xdg_toplevel_decoration.configure event must also be treated as
errors.
</description>
<arg name="id" type="new_id" interface="zxdg_toplevel_decoration_v1"/>
<arg name="toplevel" type="object" interface="xdg_toplevel"/>
</request>
</interface>
<interface name="zxdg_toplevel_decoration_v1" version="1">
<description summary="decoration object for a toplevel surface">
The decoration object allows the compositor to toggle server-side window
decorations for a toplevel surface. The client can request to switch to
another mode.
The xdg_toplevel_decoration object must be destroyed before its
xdg_toplevel.
</description>
<enum name="error">
<entry name="unconfigured_buffer" value="0"
summary="xdg_toplevel has a buffer attached before configure"/>
<entry name="already_constructed" value="1"
summary="xdg_toplevel already has a decoration object"/>
<entry name="orphaned" value="2"
summary="xdg_toplevel destroyed before the decoration object"/>
</enum>
<request name="destroy" type="destructor">
<description summary="destroy the decoration object">
Switch back to a mode without any server-side decorations at the next
commit.
</description>
</request>
<enum name="mode">
<description summary="window decoration modes">
These values describe window decoration modes.
</description>
<entry name="client_side" value="1"
summary="no server-side window decoration"/>
<entry name="server_side" value="2"
summary="server-side window decoration"/>
</enum>
<request name="set_mode">
<description summary="set the decoration mode">
Set the toplevel surface decoration mode. This informs the compositor
that the client prefers the provided decoration mode.
After requesting a decoration mode, the compositor will respond by
emitting a xdg_surface.configure event. The client should then update
its content, drawing it without decorations if the received mode is
server-side decorations. The client must also acknowledge the configure
when committing the new content (see xdg_surface.ack_configure).
The compositor can decide not to use the client's mode and enforce a
different mode instead.
Clients whose decoration mode depend on the xdg_toplevel state may send
a set_mode request in response to a xdg_surface.configure event and wait
for the next xdg_surface.configure event to prevent unwanted state.
Such clients are responsible for preventing configure loops and must
make sure not to send multiple successive set_mode requests with the
same decoration mode.
</description>
<arg name="mode" type="uint" enum="mode" summary="the decoration mode"/>
</request>
<request name="unset_mode">
<description summary="unset the decoration mode">
Unset the toplevel surface decoration mode. This informs the compositor
that the client doesn't prefer a particular decoration mode.
This request has the same semantics as set_mode.
</description>
</request>
<event name="configure">
<description summary="suggest a surface change">
The configure event asks the client to change its decoration mode. The
configured state should not be applied immediately. Clients must send an
ack_configure in response to this event. See xdg_surface.configure and
xdg_surface.ack_configure for details.
A configure event can be sent at any time. The specified mode must be
obeyed by the client.
</description>
<arg name="mode" type="uint" enum="mode" summary="the decoration mode"/>
</event>
</interface>
</protocol>

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