4chan-x/src/Miscellaneous/IDColor.coffee

43 lines
1.1 KiB
CoffeeScript

IDColor =
init: ->
return unless g.VIEW in ['index', 'thread'] and Conf['Color User IDs']
@ids = {
Heaven: [0, 0, 0, '#fff']
}
Callbacks.Post.push
name: 'Color User IDs'
cb: @node
node: ->
return if @isClone or !((uid = @info.uniqueID) and (span = @nodes.uniqueID))
rgb = IDColor.ids[uid] or IDColor.compute uid
# Style the damn node.
{style} = span
style.color = rgb[3]
style.backgroundColor = "rgb(#{rgb[0]},#{rgb[1]},#{rgb[2]})"
$.addClass span, 'painted'
compute: (uid) ->
# Convert chars to integers, bitshift and math to create a larger integer
# Create a nice string of binary
hash = if g.SITE.uidColor then g.SITE.uidColor(uid) else parseInt(uid, 16)
# Convert binary string to numerical values with bitshift and '&' truncation.
rgb = [
(hash >> 16) & 0xFF
(hash >> 8) & 0xFF
hash & 0xFF
]
# Weight color luminance values, assign a font color that should be readable.
rgb.push if $.luma(rgb) > 125
'#000'
else
'#fff'
# Cache.
@ids[uid] = rgb