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 <?xml version="1.0" encoding="UTF-8"?>
 <protocol name="outputmanagement">
   <copyright><![CDATA[
         SPDX-FileCopyrightText: 2008-2011 Kristian Høgsberg
         SPDX-FileCopyrightText: 2010-2011 Intel Corporation
         SPDX-FileCopyrightText: 2012-2013 Collabora, Ltd.
         SPDX-FileCopyrightText: 2015 Sebastian Kügler <sebas@kde.org>
 
         SPDX-License-Identifier: MIT-CMU
         ]]></copyright>
 
 <interface name="org_kde_kwin_outputmanagement" version="4">
     <description summary="configuration of server outputs through clients">
     This interface enables clients to set properties of output devices for screen
     configuration purposes via the server. To this end output devices are referenced
     by global org_kde_kwin_outputdevice objects.
 
     outputmanagement (wl_global)
     --------------------------
     request:
     * create_configuration -> outputconfiguration (wl_resource)
 
     outputconfiguration (wl_resource)
     --------------------------
     requests:
     * enable(outputdevice, bool)
     * mode(outputdevice, mode_id)
     * transformation(outputdevice, flag)
     * position(outputdevice, x, y)
     * apply
 
     events:
     * applied
     * failed
 
     The server registers one outputmanagement object as a global object. In order
     to configure outputs a client requests create_configuration, which provides a
     resource referencing an outputconfiguration for one-time configuration. That
     way the server knows which requests belong together and can group them by that.
 
     On the outputconfiguration object the client calls for each output whether the
     output should be enabled, which mode should be set (by referencing the mode from
     the list of announced modes) and the output's global position. Once all outputs
     are configured that way, the client calls apply.
     At that point and not earlier the server should try to apply the configuration.
     If this succeeds the server emits the applied signal, otherwise the failed
     signal, such that the configuring client is noticed about the success of its
     configuration request.
 
     Through this design the interface enables atomic output configuration changes if
     internally supported by the server.
 
     </description>
     <request name="create_configuration">
         <description summary="provide outputconfiguration object for configuring outputs">
             Request an outputconfiguration object through which the client can configure
             output devices.
         </description>
         <arg name="id" type="new_id" interface="org_kde_kwin_outputconfiguration"/>
     </request>
 
 </interface>
 
 <interface name="org_kde_kwin_outputconfiguration" version="4">
     <description summary="configure single output devices">
         outputconfiguration is a client-specific resource that can be used to ask
         the server to apply changes to available output devices.
 
         The client receives a list of output devices from the registry. When it wants
         to apply new settings, it creates a configuration object from the
         outputmanagement global, writes changes through this object's enable, scale,
         transform and mode calls. It then asks the server to apply these settings in
         an atomic fashion, for example through Linux' DRM interface.
 
         The server signals back whether the new settings have applied successfully
         or failed to apply. outputdevice objects are updated after the changes have been
         applied to the hardware and before the server side sends the applied event.
     </description>
 
     <request name="enable">
         <description summary="enable or disable an output">
             Mark the output as enabled or disabled.
         </description>
         <arg name="outputdevice" type="object" interface="org_kde_kwin_outputdevice" summary="outputdevice to be en- or disabled"/>
         <arg name="enable" type="int" summary="1 to enable or 0 to disable this output"/>
     </request>
 
     <request name="mode">
         <description summary="switch outputdevice to mode">
             Sets the mode for a given output by its mode size (width and height) and refresh rate.
         </description>
         <arg name="outputdevice" type="object" interface="org_kde_kwin_outputdevice" summary="outputdevice this mode change applies to"/>
         <arg name="mode_id" type="int" summary="aspired mode's id"/>
     </request>
 
     <request name="transform">
         <description summary="transform outputdevice">
             Sets the transformation for a given output.
         </description>
         <arg name="outputdevice" type="object" interface="org_kde_kwin_outputdevice" summary="outputdevice this transformation change applies to"/>
         <arg name="transform" type="int" summary="transform enum"/>
     </request>
 
     <request name="position">
         <description summary="position output in global space">
             Sets the position for this output device. (x,y) describe the top-left corner
             of the output in global space, whereby the origin (0,0) of the global space
             has to be aligned with the top-left corner of the most left and in case this
             does not define a single one the top output.
 
             There may be no gaps or overlaps between outputs, i.e. the outputs are
             stacked horizontally, vertically, or both on each other.
         </description>
         <arg name="outputdevice" type="object" interface="org_kde_kwin_outputdevice" summary="outputdevice this position applies to"/>
         <arg name="x" type="int" summary="position on the x-axis"/>
         <arg name="y" type="int" summary="position on the y-axis"/>
     </request>
 
     <request name="scale">
         <description summary="set scaling factor of this output">
             Sets the scaling factor for this output device.
         </description>
         <arg name="outputdevice" type="object" interface="org_kde_kwin_outputdevice" summary="outputdevice this mode change applies to"/>
         <arg name="scale" type="int" summary="scaling factor"/>
     </request>
 
     <request name="apply">
         <description summary="apply configuration changes to all output devices">
             Asks the server to apply property changes requested through this outputconfiguration
             object to all outputs on the server side.
         </description>
     </request>
 
     <event name="applied">
         <description summary="configuration changes have been applied">
             Sent after the server has successfully applied the changes.
             .
         </description>
     </event>
 
     <event name="failed">
         <description summary="configuration changes failed to apply">
             Sent if the server rejects the changes or failed to apply them.
         </description>
     </event>
 
     <request name="scalef" since="2">
         <description summary="set scaling factor of this output">
             Sets the scaling factor for this output device.
             Sending both scale and scalef is undefined.
         </description>
         <arg name="outputdevice" type="object" interface="org_kde_kwin_outputdevice" summary="outputdevice this mode change applies to"/>
         <arg name="scale" type="fixed" summary="scaling factor"/>
     </request>
 
     <request name="colorcurves" since="2">
         <description summary="set output color curves">
             Set color curves of output devices through RGB color ramps. Allows color
             correction of output device from user space.
 
             These are the raw values. A compositor might opt to adjust these values
             internally, for example to shift color temperature at night.
         </description>
         <arg name="outputdevice" type="object" interface="org_kde_kwin_outputdevice" summary="outputdevice curves apply to"/>
         <arg name="red" type="array" summary="red color ramp"/>
         <arg name="green" type="array" summary="green color ramp"/>
         <arg name="blue" type="array" summary="blue color ramp"/>
     </request>
 
     <request name="destroy" type="destructor" since="2">
         <description summary="release the outputconfiguration object"/>
     </request>
 
     <request name="overscan" since="3">
         <description summary="set overscan value">
             Set the overscan value of this output device with a value in percent.
         </description>
         <arg name="outputdevice" type="object" interface="org_kde_kwin_outputdevice" summary="outputdevice overscan applies to"/>
         <arg name="overscan" type="uint" summary="overscan value"/>
     </request>
 
     <enum name="vrr_policy" since="4">
         <description summary="describes vrr policy">
             Describes when the compositor may employ variable refresh rate
         </description>
         <entry name="never" value="0"/>
         <entry name="always" value="1"/>
         <entry name="automatic" value="2"/>
     </enum>
 
     <request name="set_vrr_policy" since="4">
         <description summary="set the VRR policy">
             Set what policy the compositor should employ regarding its use of
             variable refresh rate.
         </description>
         <arg name="outputdevice" type="object" interface="org_kde_kwin_outputdevice" summary="outputdevice this VRR policy applies to"/>
         <arg name="policy" type="uint" enum="vrr_policy" summary="the vrr policy to apply"/>
     </request>
 
 </interface>
 
 </protocol>