Notes from UDS Lucid discussion:

Symbolic icons

In karmic, we used '-panel' to signify icons meant for 'symbolic' icons (monochrome)

Other places we want simple, mostly-monochrome icons:

  • Software Center search magnifying glass icons (vs. more complex search icon elsewhere)
  • Clear-text-field icon (vs. more colorful, 3-D clear icon in toolbars etc)
  • List-view header icons (?)
  • Either side of a slider (e.g. Zoom Out / Zoom In in F-Spot)
  • Chromium uses all custom icons by default just so that its toolbar can be all monochrome
  • etc

Proposal is to use a -symbolic namespace

  • themes can support it if they want to, otherwise it will fall back to the non-symbolic version

What about icons working on both white and black backgrounds?

  • A separate namespace means that toolkits can treat the icon colors differently.
    • But applications don't always know what the background color is

Solved for text by using (e.g.) text[NORMAL] or fg[NORMAL]. When drawing icons with code, we can use cairo with foreground color.


  • Need to define certain names that will be colored by renderers
    • Define a name for say, the red in the battery icon (a 'warning' color), that can be passed into rsvg
  • implement named color handling in rsvg
  • Make sure that panel-theme inheritance works correctly (some themes theme the panel differently, like Dust)
  • Add (Single-paragraph?) addendum to the icon naming specification
  • Write a reference on how to create SVGs that use the named color

perl script in icon-flow to replace a certain color with text[NORMAL]


We don't have a good story for it

  • apng doesn't have good tools
  • mng isn't well supported

Need some way of animating SVGs

  • could be slices like the faux-animated PNGs we use now


SymbolicIcons (last edited 2009-12-16 18:57:34 by ABTS-TN-dynamic-027)