Module:Color contrast: Difference between revisions
m>Mr. Stradivarius m (whitespace fixes) |
m (2 revisions imported from wikipedia:Module:Color_contrast: see Topic:Vtixlm0q28eo6jtf) |
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-- | -- | ||
local p = {} | local p = {} | ||
local HTMLcolor = mw.loadData( 'Module:Color contrast/colors' ) | |||
local function sRGB ( v ) | local function sRGB ( v ) | ||
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end | end | ||
return v | return v | ||
end | |||
local function rgbdec2lum( R, G, B ) | |||
if ( 0 <= R and R < 256 and 0 <= G and G < 256 and 0 <= B and B < 256 ) then | |||
return 0.2126 * sRGB(R/255) + 0.7152 * sRGB(G/255) + 0.0722 * sRGB(B/255) | |||
else | |||
return '' | |||
end | |||
end | |||
local function hsl2lum( h, s, l ) | |||
if ( 0 <= h and h < 360 and 0 <= s and s <= 1 and 0 <= l and l <= 1 ) then | |||
local c = (1 - math.abs(2*l - 1))*s | |||
local x = c*(1 - math.abs( math.fmod(h/60, 2) - 1) ) | |||
local m = l - c/2 | |||
local r, g, b = m, m, m | |||
if( 0 <= h and h < 60 ) then | |||
r = r + c | |||
g = g + x | |||
elseif( 60 <= h and h < 120 ) then | |||
r = r + x | |||
g = g + c | |||
elseif( 120 <= h and h < 180 ) then | |||
g = g + c | |||
b = b + x | |||
elseif( 180 <= h and h < 240 ) then | |||
g = g + x | |||
b = b + c | |||
elseif( 240 <= h and h < 300 ) then | |||
r = r + x | |||
b = b + c | |||
elseif( 300 <= h and h < 360 ) then | |||
r = r + c | |||
b = b + x | |||
end | |||
return rgbdec2lum(255*r, 255*g, 255*b) | |||
else | |||
return '' | |||
end | |||
end | end | ||
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end | end | ||
-- html '#' entity | |||
c = c:gsub("#", "#") | |||
-- whitespace | -- whitespace | ||
c = c:match( '^%s*(.-)%s*$' ) | c = c:match( '^%s*(.-)[%s;]*$' ) | ||
-- unstrip nowiki strip markers | |||
c = mw.text.unstripNoWiki(c) | |||
-- lowercase | -- lowercase | ||
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return L | return L | ||
end | end | ||
-- convert from hsl | |||
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 | |||