Volume applet (keyboard control) does not respect gtk theme

[mesouug]

Expected behaviour

Volume applet (keyboard control) should have background according to gtk theme.

Actual behaviour

Volume applet (keyboard control) does not respect gtk theme. Appears as just black box.

Steps to reproduce the behaviour

Select window manager: Marco (no compositor)

MATE general version

1.20.1

Package version

not sure

Linux Distribution

Ubuntu 18.04

Link to downstream report of your Distribution

[raveit65]

I don't see any link to a downstream report :) Btw. this code is from another package not related to mate-media At least this isn't a bug. How should transparency work without a compositor?

[mesouug]

It should not be transparent at all. It should look like ordinary window and respect gtk theme. In which repo I should create issue?

[lukefromdc]

The repository involved is mate-settings-daemon, the file involved is plugins/common/msd-osd-window.c , and the window is rendered when not composted by this code, which is not themable by GTK:

        gtk_render_frame (context,
                          cr,
                          0,
                          0,
                          width,
                          height);

To follow the GTK theme would require a significant rewrite of this part an OSD that when first added to GNOME 2 worked only with compositing.