Module:Color contrast: Difference between revisions
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(synced changes from sandbox - created an access point to lum available to other modules) |
(fix unintended color2lum global error which is causing errors; clean whitespace) |
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-- |
-- |
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-- This module implements |
-- This module implements |
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-- {{Color contrast ratio}} |
-- {{Color contrast ratio}} |
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-- {{Greater color contrast ratio}} |
-- {{Greater color contrast ratio}} |
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local HTMLcolor = mw.loadData( 'Module:Color contrast/colors' ) |
local HTMLcolor = mw.loadData( 'Module:Color contrast/colors' ) |
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local function sRGB (v) |
local function sRGB (v) |
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if (v <= 0.03928) then |
if (v <= 0.03928) then |
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v = v / 12.92 |
v = v / 12.92 |
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else |
else |
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return '' |
return '' |
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end |
end |
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end |
end |
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end |
end |
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-- convert from hsl |
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if mw.ustring.match(c,'^hsl%([%s]*[0-9][0-9%.]*[%s]*,[%s]*[0-9][0-9%.]*%%[%s]*,[%s]*[0-9][0-9%.]*%%[%s]*%)$') then |
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local h, s, l = mw.ustring.match(c,'^hsl%([%s]*([0-9][0-9%.]*)[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*%)$') |
local h, s, l = mw.ustring.match(c,'^hsl%([%s]*([0-9][0-9%.]*)[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*%)$') |
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return hsl2lum(tonumber(h), tonumber(s)/100, tonumber(l)/100) |
return hsl2lum(tonumber(h), tonumber(s)/100, tonumber(l)/100) |
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end |
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-- convert from rgb |
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if mw.ustring.match(c,'^rgb%([%s]*[0-9][0-9]*[%s]*,[%s]*[0-9][0-9]*[%s]*,[%s]*[0-9][0-9]*[%s]*%)$') then |
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local R, G, B = mw.ustring.match(c,'^rgb%([%s]*([0-9][0-9]*)[%s]*,[%s]*([0-9][0-9]*)[%s]*,[%s]*([0-9][0-9]*)[%s]*%)$') |
local R, G, B = mw.ustring.match(c,'^rgb%([%s]*([0-9][0-9]*)[%s]*,[%s]*([0-9][0-9]*)[%s]*,[%s]*([0-9][0-9]*)[%s]*%)$') |
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return rgbdec2lum(tonumber(R), tonumber(G), tonumber(B)) |
return rgbdec2lum(tonumber(R), tonumber(G), tonumber(B)) |
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end |
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-- convert from rgb percent |
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if mw.ustring.match(c,'^rgb%([%s]*[0-9][0-9%.]*%%[%s]*,[%s]*[0-9][0-9%.]*%%[%s]*,[%s]*[0-9][0-9%.]*%%[%s]*%)$') then |
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local R, G, B = mw.ustring.match(c,'^rgb%([%s]*([0-9][0-9%.]*)%%[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*%)$') |
local R, G, B = mw.ustring.match(c,'^rgb%([%s]*([0-9][0-9%.]*)%%[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*%)$') |
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return rgbdec2lum(255*tonumber(R)/100, 255*tonumber(G)/100, 255*tonumber(B)/100) |
return rgbdec2lum(255*tonumber(R)/100, 255*tonumber(G)/100, 255*tonumber(B)/100) |
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end |
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-- remove leading # (if there is one) and whitespace |
-- remove leading # (if there is one) and whitespace |
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-- failure, return blank |
-- failure, return blank |
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return '' |
return '' |
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end |
end |
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ratio2 = (ratio2 < 1) and 1/ratio2 or ratio2 |
ratio2 = (ratio2 < 1) and 1/ratio2 or ratio2 |
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end |
end |
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if css then |
if css then |
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local c1 = args[1] or '' |
local c1 = args[1] or '' |
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return 'background-color:' .. c1 .. '; color:' .. ((ratio1 > 0) and (ratio2 > 0) and ((ratio1 + bias > ratio2) and c2 or c3) or '') .. ';' |
return 'background-color:' .. c1 .. '; color:' .. ((ratio1 > 0) and (ratio2 > 0) and ((ratio1 + bias > ratio2) and c2 or c3) or '') .. ';' |
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end |
end |
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return (ratio1 > 0) and (ratio2 > 0) and ((ratio1 + bias > ratio2) and c2 or c3) or '' |
return (ratio1 > 0) and (ratio2 > 0) and ((ratio1 + bias > ratio2) and c2 or c3) or '' |
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end |
end |
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--[[ |
--[[ |
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Use {{#invoke:Color contrast|somecolor}} directly or |
Use {{#invoke:Color contrast|somecolor}} directly or |
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{{#invoke:Color contrast}} from a wrapper template. |
{{#invoke:Color contrast}} from a wrapper template. |
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