hyprland-protocols/protocols/hyprland-ctm-control.xml

<?xml version="1.0" encoding="UTF-8"?>
<protocol name="hyprland_ctm_control_v1">
  <copyright>
    Copyright © 2024 Vaxry
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    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:

    1. Redistributions of source code must retain the above copyright notice, this
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       this list of conditions and the following disclaimer in the documentation
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    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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  </copyright>

  <description summary="controlling outputs' color transform matrix">
    This protocol allows a client to control outputs' color transform matrix (CTM).

    This protocol is privileged and should not be exposed to unprivileged clients.
  </description>

  <interface name="hyprland_ctm_control_manager_v1" version="1">
    <description summary="manager to control CTMs">
      This object is a manager which offers requests to control CTMs.

      If any changes are done, once this object is destroyed, CTMs are reset back to
      an identity matrix.
    </description>

    <request name="set_ctm_for_output">
      <description summary="set the CTM of an output">
        Set a CTM for a wl_output.

        This state is not applied immediately; clients must call .commit to
        apply any pending changes.

        The provided values describe a 3x3 Row-Major CTM with values in the range of [0, ∞)

        Passing values outside of the range will raise an invalid_matrix error.

        The default value of the CTM is an identity matrix.

        If an output doesn't get a CTM set with set_ctm_for_output and commit is called,
        that output will get its CTM reset to an identity matrix.
      </description>
      <arg name="output" type="object" interface="wl_output"/>
      <arg name="mat0" type="fixed"/>
      <arg name="mat1" type="fixed"/>
      <arg name="mat2" type="fixed"/>
      <arg name="mat3" type="fixed"/>
      <arg name="mat4" type="fixed"/>
      <arg name="mat5" type="fixed"/>
      <arg name="mat6" type="fixed"/>
      <arg name="mat7" type="fixed"/>
      <arg name="mat8" type="fixed"/>
    </request>

    <request name="commit">
      <description summary="commit the pending state">
        Commits the pending state(s) set by set_ctm_for_output.
      </description>
    </request>

    <request name="destroy" type="destructor">
      <description summary="destroy the manager">
        All objects created by the manager will still remain valid, until their
        appropriate destroy request has been called.

        The CTMs of all outputs will be reset to an identity matrix.
      </description>
    </request>

    <enum name="error">
      <entry name="invalid_matrix" value="0"
        summary="the matrix values are invalid."/>
    </enum>
  </interface>
</protocol>