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(ചെ.)
en:Module:Color_contrast എന്നതിൽ നിന്ന് 2 പതിപ്പുകൾ ഇറക്കുമതി ചെയ്തു
(ചെ.) (ഒരു പതിപ്പ് ഇറക്കുമതി ചെയ്തു) |
mlwiki>Jacob.jose (ചെ.) (en:Module:Color_contrast എന്നതിൽ നിന്ന് 2 പതിപ്പുകൾ ഇറക്കുമതി ചെയ്തു) |
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| വരി 1: | വരി 1: | ||
-- | -- | ||
-- This module implements | -- This module implements | ||
-- {{Color contrast ratio}} | -- {{Color contrast ratio}} | ||
-- {{Greater color contrast ratio}} | -- {{Greater color contrast ratio}} | ||
| വരി 9: | വരി 9: | ||
local HTMLcolor = mw.loadData( 'Module:Color contrast/colors' ) | local HTMLcolor = mw.loadData( 'Module:Color contrast/colors' ) | ||
local function sRGB ( v ) | local function sRGB (v) | ||
if (v <= 0.03928) then | if (v <= 0.03928) then | ||
v = v / 12.92 | v = v / 12.92 | ||
else | else | ||
| വരി 18: | വരി 18: | ||
end | end | ||
local function rgbdec2lum( R, G, B ) | 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 | 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) | return 0.2126 * sRGB(R/255) + 0.7152 * sRGB(G/255) + 0.0722 * sRGB(B/255) | ||
| വരി 26: | വരി 26: | ||
end | end | ||
local function hsl2lum( h, s, l ) | 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 | 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 c = (1 - math.abs(2*l - 1))*s | ||
| വരി 58: | വരി 58: | ||
end | end | ||
local function color2lum( c ) | local function color2lum(c) | ||
if (c == nil) then | if (c == nil) then | ||
return '' | return '' | ||
end | end | ||
-- html '#' entity | |||
c = c:gsub("#", "#") | |||
-- whitespace | -- whitespace | ||
c = c:match( '^%s*(.-)[%s;]*$' ) | c = c:match( '^%s*(.-)[%s;]*$' ) | ||
| വരി 78: | വരി 82: | ||
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]*%)$') then | |||
local h, s, l = mw.ustring.match(c,'^hsl%([%s]*([0-9][0-9%.]*)[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*%)$') | 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]*%)$') | ||
return hsl2lum(tonumber(h), tonumber(s)/100, tonumber(l)/100) | return hsl2lum(tonumber(h), tonumber(s)/100, tonumber(l)/100) | ||
end | |||
-- convert from rgb | |||
if mw.ustring.match(c,'^rgb%([%s]*[0-9][0-9]*[%s]*,[%s]*[0-9][0-9]*[%s]*,[%s]*[0-9][0-9]*[%s]*%)$') 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]*%)$') | local R, G, B = mw.ustring.match(c,'^rgb%([%s]*([0-9][0-9]*)[%s]*,[%s]*([0-9][0-9]*)[%s]*,[%s]*([0-9][0-9]*)[%s]*%)$') | ||
return rgbdec2lum(tonumber(R), tonumber(G), tonumber(B)) | 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]*%)$') then | |||
local R, G, B = mw.ustring.match(c,'^rgb%([%s]*([0-9][0-9%.]*)%%[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*,[%s]*([0-9][0-9%.]*)%%[%s]*%)$') | 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]*%)$') | ||
return rgbdec2lum(255*tonumber(R)/100, 255*tonumber(G)/100, 255*tonumber(B)/100) | return rgbdec2lum(255*tonumber(R)/100, 255*tonumber(G)/100, 255*tonumber(B)/100) | ||
end | |||
-- remove leading # (if there is one) and whitespace | -- remove leading # (if there is one) and whitespace | ||
| വരി 117: | വരി 121: | ||
-- failure, return blank | -- failure, return blank | ||
return '' | return '' | ||
end | |||
-- This exports the function for use in other modules. | |||
-- The colour is passed as a string. | |||
function p._lum(color) | |||
return color2lum(color) | |||
end | end | ||
function p._greatercontrast(args) | function p._greatercontrast(args) | ||
local bias = tonumber(args['bias'] or '0') or 0 | local bias = tonumber(args['bias'] or '0') or 0 | ||
local css = (args['css'] and args['css'] ~= '') and true or false | |||
local v1 = color2lum(args[1] or '') | local v1 = color2lum(args[1] or '') | ||
local c2 = args[2] or '#FFFFFF' | local c2 = args[2] or '#FFFFFF' | ||
| വരി 126: | വരി 137: | ||
local c3 = args[3] or '#000000' | local c3 = args[3] or '#000000' | ||
local v3 = color2lum(c3) | local v3 = color2lum(c3) | ||
local ratio1 = | local ratio1 = -1; | ||
local ratio2 = | local ratio2 = -1; | ||
if (type(v1) == 'number' and type(v2) == 'number') then | if (type(v1) == 'number' and type(v2) == 'number') then | ||
ratio1 = (v2 + 0.05)/(v1 + 0.05) | ratio1 = (v2 + 0.05)/(v1 + 0.05) | ||
| വരി 136: | വരി 147: | ||
ratio2 = (ratio2 < 1) and 1/ratio2 or ratio2 | ratio2 = (ratio2 < 1) and 1/ratio2 or ratio2 | ||
end | end | ||
return (ratio1 + bias > ratio2) and c2 or c3 | |||
if css then | |||
local c1 = args[1] or '' | |||
if mw.ustring.match(c1, '^[A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9]$') 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]$') then | |||
c3 = '#' .. c3 | |||
end | |||
return 'background-color:' .. c1 .. '; color:' .. ((ratio1 > 0) and (ratio2 > 0) and ((ratio1 + bias > ratio2) and c2 or c3) or '') .. ';' | |||
end | |||
return (ratio1 > 0) and (ratio2 > 0) and ((ratio1 + bias > ratio2) and c2 or c3) or '' | |||
end | end | ||
| വരി 167: | വരി 196: | ||
end | end | ||
local slist = mw.text.split(style or '', ';') | local slist = mw.text.split(mw.ustring.gsub(mw.ustring.gsub(style or '', '&#[Xx]23;', '#'), '#', '#'), ';') | ||
for k = 1,#slist do | for k = 1,#slist do | ||
s = slist[k] | local s = slist[k] | ||
local k,v = s:match( '^[%s]*([^:]-):([^:]-)[%s;]*$' ) | local k,v = s:match( '^[%s]*([^:]-):([^:]-)[%s;]*$' ) | ||
k = k or '' | k = k or '' | ||
| വരി 188: | വരി 217: | ||
end | end | ||
--[[ | |||
Use {{#invoke:Color contrast|somecolor}} directly or | |||
{{#invoke:Color contrast}} from a wrapper template. | |||
Parameters: | |||
-- |1= — required; A color to check. | |||
--]] | |||
function p.lum(frame) | function p.lum(frame) | ||
local color = frame.args[1] or frame:getParent().args[1] | |||
return p._lum(color) | |||
end | end | ||