https://bugs.kde.org/show_bug.cgi?id=502275

JT <jt.news...@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|unspecified                 |5.27.12

--- Comment #1 from JT <jt.news...@gmail.com> ---
SUMMARY

When using a printer with a tri-colour cartridge, e.g. Canon Pixma TS3355, the
colour ink level progress bar is not rendered.

STEPS TO REPRODUCE

1.  Open System Settings > Printers
2.  Select printer with a tri-colour cartridge.

OBSERVED RESULT

The colour cartridge ink level progress bar is not rendered.

EXPECTED RESULT

The progress bar should be rendered with a rainbow effect.

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: Kubuntu 24.04 LTS
KDE Plasma Version: 5.27.12
KDE Frameworks Version: 5.115.0
Qt Version: 5.15.3

ADDITIONAL INFORMATION

/etc/cups/printers.conf
-------------
...
Attribute marker-colors \#00CFFF#F200FF#FFDA00,#000000
Attribute marker-levels 90,70
Attribute marker-low-levels 15,15
Attribute marker-high-levels 100,100
Attribute marker-names Color,Black
Attribute marker-types ink-cartridge,ink-cartridge
Attribute marker-change-time 1743508388
...

Attribute marker-colors \#000000,#000000 renders the progress bar, albeit in
black, but this is only temporary. When the printer comes back online it is
overwritten.

Would it be possible to add logic to infer that a tri-colour cartridge is
installed and render it with a rainbow effect?

It seems safe to infer that a tri-colour cartridge is installed when
marker-levels, marker-low-levels, marker-high-levels, marker-names and
marker-types are all duos.

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