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xdg-output: make xdg_output.description mutable

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The output description is a human-readable text describing the output. Unlike
the name which uniquely identifies the output, it's intended to be displayed to
the user.

It might be desirable for a compositor to update an output's description. For
instance, when only one output is plugged in, it's not necessary to dump make,
model, serial and connector to the description, something like "Dell U2717D" is
enough. However when two identical outputs are plugged in it's necessary to add
e.g. the connector type to tell them apart ("Dell U2717D on HDMI"). See [1] for
a discussion about this.

This commit bumps xdg_output's version to allow compositors to update the
property.

[1]: https://github.com/swaywm/wlroots/issues/1623

Signed-off-by: Simon Ser <contact@emersion.fr>
Reviewed-by: Jonas Ådahl <jadahl@gmail.com>
Acked-by: Olivier Fourdan <ofourdan@redhat.com>
This commit is contained in:
Simon Ser 2019-07-17 08:25:59 +00:00 • committed by Jonas Ådahl
parent e0d6ad1d5e
commit 048102f21a
1 changed files with 5 additions and 3 deletions
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8
unstable/xdg-output/xdg-output-unstable-v1.xml
View file

@ -206,10 +206,12 @@
output via :1'. output via :1'.
The description event is sent after creating an xdg_output (see The description event is sent after creating an xdg_output (see
xdg_output_manager.get_xdg_output). This event is only sent once per xdg_output_manager.get_xdg_output) and whenever the description
changes. The description is optional, and may not be sent at all.
For objects of version 2 and lower, this event is only sent once per
xdg_output, and the description does not change over the lifetime of xdg_output, and the description does not change over the lifetime of
the wl_output global. The description is optional, and may not be sent the wl_output global.
at all.
</description> </description>
<arg name="description" type="string" summary="output description"/> <arg name="description" type="string" summary="output description"/>
</event> </event>