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Module:Color contrast (view source)
Revision as of 14:20, 31 December 2018
, 14:20, 31 December 20181 revision imported
return ''
return ''
end
end
-- html '#' entity
c = c:gsub("#", "#")
-- whitespace
-- whitespace
c = c:match( '^%s*(.-)[%s;]*$' )
c = c:match( '^%s*(.-)[%s;]*$' )
function p._greatercontrast(args)
function p._greatercontrast(args)
local bias = tonumber(args['bias'] or '0') or 0
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 v1 = color2lum(args[1] or '')
local c2 = args[2] or '#FFFFFF'
local c2 = args[2] or '#FFFFFF'
local c3 = args[3] or '#000000'
local c3 = args[3] or '#000000'
local v3 = color2lum(c3)
local v3 = color2lum(c3)
local ratio1 = 0;
local ratio1 = -1;
local ratio2 = 0;
local ratio2 = -1;
if (type(v1) == 'number' and type(v2) == 'number') then
if (type(v1) == 'number' and type(v2) == 'number') then
ratio1 = (v2 + 0.05)/(v1 + 0.05)
ratio1 = (v2 + 0.05)/(v1 + 0.05)
ratio2 = (ratio2 < 1) and 1/ratio2 or ratio2
ratio2 = (ratio2 < 1) and 1/ratio2 or ratio2
end
end
return (ratio1 + bias > ratio2) and c2 or c3
if css then
local c1 = args[1] or ''
if mw.ustring.match(c1, '^[A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9]$') or
mw.ustring.match(c1, '^[A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9]$') then
c1 = '#' .. c1
end
if mw.ustring.match(c2, '^[A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9]$') or
mw.ustring.match(c2, '^[A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9]$') then
c2 = '#' .. c2
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
c3 = '#' .. c3
end
return 'background-color:' .. c1 .. '; 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
end
end
end
local slist = mw.text.split(style or '', ';')
local slist = mw.text.split(mw.ustring.gsub(mw.ustring.gsub(style or '', '&#[Xx]23;', '#'), '#', '#'), ';')
for k = 1,#slist do
for k = 1,#slist do
s = slist[k]
local s = slist[k]
local k,v = s:match( '^[%s]*([^:]-):([^:]-)[%s;]*$' )
local k,v = s:match( '^[%s]*([^:]-):([^:]-)[%s;]*$' )
k = k or ''
k = k or ''