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Module:Color contrast: Difference between revisions

Module Discussion

Module:Color contrast (edit)

Revision as of 11:41, 21 May 2021

1,473 bytes added ,  3 years ago
m
2 revisions imported from wikipedia:Module:Color_contrast: see Topic:Vtixlm0q28eo6jtf
m>Mr. Stradivarius
m (whitespace fixes)
m (2 revisions imported from wikipedia:Module:Color_contrast: see Topic:Vtixlm0q28eo6jtf)
 
(39 intermediate revisions by 12 users not shown)
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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


local HTMLcolor = {
-- html '#' entity
white                = 1,
c = c:gsub("&#35;", "#")
silver              = 0.52711512570581,
gray                = 0.2158605001139,
black                = 0,
red                  = 0.2126,
maroon              = 0.045891942324215,
yellow              = 0.9278,
olive                = 0.20027537200568,
lime                = 0.7152,
green                = 0.15438342968146,
aqua                = 0.7874,
teal                = 0.16996855778968,
blue                = 0.0722,
navy                = 0.015585128108224,
fuchsia              = 0.2848,
purple              = 0.061477070432439,
orange              = 0.4817026703631,


gold                = 0.69860877428159,
pink                = 0.63271070702466,
lightpink            = 0.58566152734898,
hotpink              = 0.34658438169715,
deeppink            = 0.23866895828276,
palevioletred        = 0.28754994117889,
mediumvioletred      = 0.14371899849357,
lightsalmon          = 0.4780675225206,
salmon              = 0.36977241527596,
darksalmon          = 0.40541471563381,
lightcoral          = 0.35522120733135,
indianred            = 0.21406134963884,
crimson              = 0.16042199953026,
firebrick            = 0.10724525535015,
darkred              = 0.054889674531132,
orangered            = 0.25516243753416,
tomato              = 0.30638612719415,
coral                = 0.37017930872924,
darkorange          = 0.40016167026524,
lightyellow          = 0.98161818392882,
lemonchiffon        = 0.94038992245622,
lightgoldenrodyellow = 0.93348351018297,
papayawhip          = 0.87797100199835,
moccasin            = 0.80083000991567,
peachpuff            = 0.74905589878251,
palegoldenrod        = 0.78792647887614,
khaki                = 0.77012343394121,
darkkhaki            = 0.45747326349994,
cornsilk            = 0.93562110372965,
blanchedalmond      = 0.85084439608156,
bisque              = 0.80732327372979,
navajowhite          = 0.76519682342785,
wheat                = 0.74909702820482,
burlywood            = 0.51559844533893,
tan                  = 0.48237604163921,
rosybrown            = 0.32319457649407,
sandybrown          = 0.46628543696283,
goldenrod            = 0.41919977809569,
darkgoldenrod        = 0.27264703559993,
peru                = 0.30113074877936,
chocolate            = 0.23898526114557,
saddlebrown          = 0.097922285020521,
sienna              = 0.13697631337098,
brown                = 0.098224287876511,
}
-- 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]*%)$') then
local h, s, l = mw.ustring.match(c,'^hsl%([%s]*([0-9][0-9%.]*)[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*%)$')
return hsl2lum(tonumber(h), tonumber(s)/100, tonumber(l)/100)
  end
  -- convert from rgb
  if mw.ustring.match(c,'^rgb%([%s]*[0-9][0-9]*[%s]*,[%s]*[0-9][0-9]*[%s]*,[%s]*[0-9][0-9]*[%s]*%)$') then
local R, G, B = mw.ustring.match(c,'^rgb%([%s]*([0-9][0-9]*)[%s]*,[%s]*([0-9][0-9]*)[%s]*,[%s]*([0-9][0-9]*)[%s]*%)$')
return rgbdec2lum(tonumber(R), tonumber(G), tonumber(B))
  end
  -- convert from rgb percent
  if mw.ustring.match(c,'^rgb%([%s]*[0-9][0-9%.]*%%[%s]*,[%s]*[0-9][0-9%.]*%%[%s]*,[%s]*[0-9][0-9%.]*%%[%s]*%)$') then
local R, G, B = mw.ustring.match(c,'^rgb%([%s]*([0-9][0-9%.]*)%%[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*%)$')
return rgbdec2lum(255*tonumber(R)/100, 255*tonumber(G)/100, 255*tonumber(B)/100)
  end
-- remove leading # (if there is one) and whitespace
-- remove leading # (if there is one) and whitespace
c = mw.ustring.match(c, '^[%s#]*([a-f0-9]*)[%s]*$')
c = mw.ustring.match(c, '^[%s#]*([a-f0-9]*)[%s]*$')
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local cs = mw.text.split(c or '', '')
local cs = mw.text.split(c or '', '')
if( #cs == 6 ) then
if( #cs == 6 ) then
local R = sRGB( (16*tonumber('0x' .. cs[1]) + tonumber('0x' .. cs[2]))/255 )
local R = 16*tonumber('0x' .. cs[1]) + tonumber('0x' .. cs[2])
local G = sRGB( (16*tonumber('0x' .. cs[3]) + tonumber('0x' .. cs[4]))/255 )
local G = 16*tonumber('0x' .. cs[3]) + tonumber('0x' .. cs[4])
local B = sRGB( (16*tonumber('0x' .. cs[5]) + tonumber('0x' .. cs[6]))/255 )
local B = 16*tonumber('0x' .. cs[5]) + tonumber('0x' .. cs[6])


L = 0.2126 * R + 0.7152 * G + 0.0722 * B
return rgbdec2lum(R, G, B)
return L
elseif ( #cs == 3 ) then
elseif ( #cs == 3 ) then
local R = sRGB( (16*tonumber('0x' .. cs[1]) + tonumber('0x' .. cs[1]))/255 )
local R = 16*tonumber('0x' .. cs[1]) + tonumber('0x' .. cs[1])
local G = sRGB( (16*tonumber('0x' .. cs[2]) + tonumber('0x' .. cs[2]))/255 )
local G = 16*tonumber('0x' .. cs[2]) + tonumber('0x' .. cs[2])
local B = sRGB( (16*tonumber('0x' .. cs[3]) + tonumber('0x' .. cs[3]))/255 )
local B = 16*tonumber('0x' .. cs[3]) + tonumber('0x' .. cs[3])


L = 0.2126 * R + 0.7152 * G + 0.0722 * B
return rgbdec2lum(R, G, B)
return L
end
end


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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'
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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)
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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


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else
else
return args['error'] or '?'
return args['error'] or '?'
end
end
function p._styleratio(args)
local style = (args[1] or ''):lower()
local bg, fg = 'white', 'black'
local lum_bg, lum_fg = 1, 0
if args[2] then
local lum = color2lum(args[2])
if lum ~= '' then bg, lum_bg = args[2], lum end
end
if args[3] then
local lum = color2lum(args[3])
if lum ~= '' then fg, lum_fg = args[3], lum end
end
local slist = mw.text.split(mw.ustring.gsub(mw.ustring.gsub(style or '', '&#[Xx]23;', '#'), '&#35;', '#'), ';')
for k = 1,#slist do
local s = slist[k]
local k,v = s:match( '^[%s]*([^:]-):([^:]-)[%s;]*$' )
k = k or ''
v = v or ''
if (k:match('^[%s]*(background)[%s]*$') or k:match('^[%s]*(background%-color)[%s]*$')) then
local lum = color2lum(v)
if( lum ~= '' ) then bg, lum_bg = v, lum end
elseif (k:match('^[%s]*(color)[%s]*$')) then
local lum = color2lum(v)
if( lum ~= '' ) then bg, lum_fg = v, lum end
end
end
if lum_bg > lum_fg then
return (lum_bg + 0.05)/(lum_fg + 0.05)
else
return (lum_fg + 0.05)/(lum_bg + 0.05)
end
end
end
end
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local args = frame.args[1] and frame.args or frame:getParent().args
local args = frame.args[1] and frame.args or frame:getParent().args
return p._ratio(args)
return p._ratio(args)
end
function p.styleratio(frame)
local args = frame.args[1] and frame.args or frame:getParent().args
return p._styleratio(args)
end
end


Retrieved from "https://nonbinary.wiki/wiki/Special:MobileDiff/20190...20224"