Module:Color contrast: Difference between revisions

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add option for greatercontrast to form inline css string
(fix for garbage input)
(add option for greatercontrast to form inline css string)
Line 121:
function p._greatercontrast(args)
local bias = tonumber(args['bias'] or '0') or 0
local css = (args['css'] and args['css'] ~= '') and true or false
local v1 = color2lum(args[1] or '')
local c2 = args[2] or '#FFFFFF'
Line 136 ⟶ 137:
ratio2 = (ratio2 < 1) and 1/ratio2 or ratio2
end
if css then
if mw.ustring.match(v1, '^[A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9]$') or
mw.ustring.match(v1, '^[A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9]$') then
v1 = '#' .. v1
end
if mw.ustring.match(v2, '^[A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9]$') or
mw.ustring.match(v2, '^[A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9]$') then
v2 = '#' .. v2
end
if mw.ustring.match(v3, '^[A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9]$') or
mw.ustring.match(v3, '^[A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9]$') then
v3 = '#' .. v3
end
return 'background-color:' .. v1 .. '; color:'
.. ((ratio1 > 0) and (ratio2 > 0) and ((ratio1 + bias > ratio2) and c2 or c3) or '') .. ';'
end
return (ratio1 > 0) and (ratio2 > 0) and ((ratio1 + bias > ratio2) and c2 or c3) or ''
end
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