Feature proposal: Brightness and contrast functionality


GNOME Shell has a built-in magnification feature. In addition to magnifying the contents, some users prefer to change the contrast magnified content, change the overall brightness, and/or invert the lightness -- "inverse video".  Further details are available here [1].


Joseph Scheuhammer

Involved Parties

GNOME Shell team (patch review), clutter team (patch review), gsettings-desktop-schemas maintainers (patch review), a11y team

Current Status

The work on this feature is mostly done, and in fact some demos were made. The initial plan was for it to be released as part of GNOME 3.2, but delayed when the bright/contrast/inverse clutter effects were moved from custom code in GNOME Shell to clutter itself. Right now the remaining issues are the details of each part (in fact clutter patches were initially approved and committed).

Right now the work is tracked with three bugs:
   * Magnifier: Add brightness and contrast functionality. (gnome-shell) [2]
Magnifier: Add brightness and contrast preferences (gsettings-desktop-schemas) [3]
   * Add lightness, brightness, and contrast effects (clutter) [4]


As I said, this feature was planned for GNOME 3.2., but it was not discussed or proposed previously, so we are doing that now

[1] https://live.gnome.org/GnomeShell/Magnification#Features_in_Development
[2] https://bugzilla.gnome.org/show_bug.cgi?id=639851
[3] https://bugzilla.gnome.org/show_bug.cgi?id=645665
[4] https://bugzilla.gnome.org/show_bug.cgi?id=656156

Alejandro Piñeiro Iglesias

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