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Am 18.02.2011 03:29, Alexander Yakushev wrote:
> Greetings,
> I got a bit tricky problem. Recently I made myself a pretty
> black'n'white theme with dark wallpaper, and all that looks great... if
> only taskbar icons (icons that are to the left from program titles in
> the taskbar) were grayscale too. I know that I can turn off that icons
> but that is a cheap solution. So I want to dynamically paint all these
> icons in grayscale mode.
> I hack a little Lua, but understanding all the awful.taskbar internal
> meat is still too hard for me. Maybe you could give me an advice where
> (if at all) in the module I can get access to raw icon images that I can
> further turn into grayscale using some common algorithms.
> Thank you in advance for your help.
At the end of your rc.lua, do:
recurse = true
client.add_signal("new", function(c)
c:add_signal("property::icon", function()
-- Make sure we aren't going into an endless loop when changing the icon
if not recurse then return end
if not client.icon then return end
-- Here you can do something with c.icon, e.g.:
c.icon:save("/tmp/icon.png")
local h =
io.popen("convert -colorspace Gray /tmp/icon.png /tmp/icon2.png")
recurse = false
c.icon = image("/tmp/icon2.png")
recurse = true
end)
end)
No idea if this works (I don't even know if that "convert" call works), but I
hope this helps you finding something that works.
Cheers,
Uli
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