Module:Color contrast/sandbox - Revision history

Pppery: Requested edit

2025-03-30T20:29:26Z

Requested edit

← Previous revision		Revision as of 20:29, 30 March 2025
Line 1:		Line 1:
	--		--
	-- This module implements		-- This module implements
	-- {{Color contrast ratio}}		-- {{Color contrast ratio}}
	-- {{Greater color contrast ratio}}		-- {{Greater color contrast ratio}}
Line 9:		Line 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
Line 56:		Line 56:
	return ''		return ''
	end		end
⚫	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

Line 88:		Line 82:
	end		end

	-- convert from hsl		-- 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]*%)$') then		if mw.ustring.match(c,'^hsl%([%s][0-9][0-9%.][%s],[%s][0-9][0-9%.]%%[%s],[%s][0-9][0-9%.]%%[%s]*%)$') 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		end

	-- convert from rgb		-- 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]*%)$') then		if mw.ustring.match(c,'^rgb%([%s][0-9][0-9][%s],[%s][0-9][0-9][%s],[%s][0-9][0-9][%s]*%)$') 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		end

	-- convert from rgb percent		-- 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]*%)$') then		if mw.ustring.match(c,'^rgb%([%s][0-9][0-9%.]%%[%s],[%s][0-9][0-9%.]%%[%s],[%s][0-9][0-9%.]%%[%s]*%)$') 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(255tonumber(R)/100, 255tonumber(G)/100, 255*tonumber(B)/100)		return rgbdec2lum(255tonumber(R)/100, 255tonumber(G)/100, 255*tonumber(B)/100)
	end		end

	-- remove leading # (if there is one) and whitespace		-- remove leading # (if there is one) and whitespace
Line 127:		Line 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

Line 133:		Line 133:
	local css = (args['css'] and args['css'] ~= '') and true or false		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 'white'
	local v2 = color2lum(c2)		local v2 = color2lum(c2)
	local c3 = args[3] or '~~#000000~~'		local c3 = args[3] or 'black'
	local v3 = color2lum(c3)		local v3 = color2lum(c3)
	local ratio1 = -1;		local ratio1 = -1;
Line 147:		Line 147:
	ratio2 = (ratio2 < 1) and 1/ratio2 or ratio2		ratio2 = (ratio2 < 1) and 1/ratio2 or ratio2
	end		end


	if css then		if css then
	local c1 = args[1] or ''		local c1 = args[1] or ''
Line 164:		Line 164:
	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 '') .. ';'
	end		end


	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 ''
	end		end
Line 218:		Line 218:

	--[[		--[[
	Use {{#invoke:Color contrast\|somecolor}} directly or		Use {{#invoke:Color contrast\|somecolor}} directly or
	{{#invoke:Color contrast}} from a wrapper template.		{{#invoke:Color contrast}} from a wrapper template.

Gonnym at 15:50, 6 January 2019

2019-01-06T15:50:49Z

← Previous revision		Revision as of 15:50, 6 January 2019
Line 58:		Line 58:
	end		end

			-- This exports the function for use in other modules.
⚫	function p._lum(~~args~~)
			-- The colour is passed as a string.
⚫	return color2lum(~~args~~)
		⚫	function p._lum(color)
		⚫	return color2lum(color)
	end		end

Line 215:		Line 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 ~~args~~ = frame.args[1] or frame:getParent().args[1]		local color = frame.args[1] or frame:getParent().args[1]
	return p._lum(~~args~~)		return p._lum(color)
	end		end

Gonnym: added a module public access point to p._lum

2019-01-05T16:42:23Z

added a module public access point to p._lum

← Previous revision		Revision as of 16:42, 5 January 2019
Line 9:		Line 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
Line 18:		Line 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)
Line 26:		Line 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(2l - 1))s		local c = (1 - math.abs(2l - 1))s
Line 58:		Line 58:
	end		end

	~~local~~ function ~~color2lum~~( c )		function p._lum(args)
			return color2lum(args)
			end

			local function color2lum(c)

	if (c == nil) then		if (c == nil) then
Line 212:		Line 216:

	function p.lum(frame)		function p.lum(frame)
	~~return~~ ~~color2lum(~~frame.args[1] or frame:getParent().args[1])		local args = frame.args[1] or frame:getParent().args[1]
			return p._lum(args)
	end		end

Gonnym: syncing sandbox with live version

2019-01-05T16:38:05Z

syncing sandbox with live version

Show changes

Kephir at 18:14, 2 June 2017

2017-06-02T18:14:06Z

← Previous revision		Revision as of 18:14, 2 June 2017
Line 8:		Line 8:
	local p = {}		local p = {}
	local HTMLcolor = mw.loadData( 'Module:Color contrast/colors' )		local HTMLcolor = mw.loadData( 'Module:Color contrast/colors' )
	local pow, abs, fmod = math.pow, math.abs, math.fmod		local pow, abs, fmod, tonumber = math.pow, math.abs, math.fmod, tonumber

	local function sRGB ( v )		local function sRGB ( v )

Kephir: performance tuning

2017-05-25T09:37:23Z

performance tuning

← Previous revision		Revision as of 09:37, 25 May 2017
Line 8:		Line 8:
	local p = {}		local p = {}
	local HTMLcolor = mw.loadData( 'Module:Color contrast/colors' )		local HTMLcolor = mw.loadData( 'Module:Color contrast/colors' )
			local pow, abs, fmod = math.pow, math.abs, math.fmod

	local function sRGB ( v )		local function sRGB ( v )
Line 13:		Line 14:
	v = v / 12.92		v = v / 12.92
	else		else
	v = ~~math.~~pow((v+0.055)/1.055, 2.4)		v = pow((v+0.055)/1.055, 2.4)
	end		end
	return v		return v
Line 22:		Line 23:
	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)
	else		else
	return ''		return nil
	end		end
	end		end
Line 28:		Line 29:
	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(2l - 1))s		local c = (1 - abs(2l - 1))s
	local x = c*(1 - ~~math.~~abs( ~~math.~~fmod(h/60, 2) - 1) )		local x = c*(1 - abs( fmod(h/60, 2) - 1) )
	local m = l - c/2		local m = l - c/2

Line 54:		Line 55:
	return rgbdec2lum(255r, 255g, 255*b)		return rgbdec2lum(255r, 255g, 255*b)
	else		else
	return ''		return nil
	end		end
	end		end
Line 60:		Line 61:
	local function color2lum( c )		local function color2lum( c )

	if (c == nil) then		if c == nil then
	return ''		return nil
	end		end
	-- whitespace		-- whitespace
Line 98:		Line 99:
	-- 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]*$')		c = mw.ustring.match(c, '^[%s#]([a-f0-9])[%s]*$')
		⚫	if not c then

			return nil
	-- split into rgb
			elseif #c == 6 then
	local cs = mw.text.split(c or '', '')
			local R = tonumber(c:sub(1, 2), 16)
⚫	if( ~~#cs~~ ~~== 6 )~~ then
	local R = 16*tonumber(~~'0x'~~ ~~.. cs[1]~~) ~~+ tonumber('0x' .. cs[2]~~)		local G = tonumber(c:sub(3, 4), 16)
	local G = 16*tonumber(~~'0x'~~ ~~.. cs[3]~~) ~~+ tonumber('0x' .. cs[4]~~)		local B = tonumber(c:sub(5, 6), 16)
	local B = 16*tonumber('0x' .. cs[5]) + tonumber('0x' .. cs[6])

	return rgbdec2lum(R, G, B)		return rgbdec2lum(R, G, B)
	elseif ( #cs == 3 ) then		elseif #c == 3 then
	local R = 16*tonumber(~~'0x'~~ ~~.. cs[~~1]) + ~~tonumber('0x'~~ ~~.. cs[1])~~		local R = tonumber(c:sub(1, 1), 16) * 0x11
	local G = 16*tonumber(~~'0x'~~ ~~.. cs[~~2]) + ~~tonumber('0x'~~ ~~.. cs[2])~~		local G = tonumber(c:sub(2, 2), 16) * 0x11
	local B = 16*tonumber(~~'0x'~~ ~~.. cs[~~3]) + ~~tonumber('0x'~~ ~~.. cs[3])~~		local B = tonumber(c:sub(3, 3), 16) * 0x11

	return rgbdec2lum(R, G, B)		return rgbdec2lum(R, G, B)
Line 116:		Line 116:

	-- failure, return blank		-- failure, return blank
	return ''		return nil
	end		end

Line 126:		Line 126:
	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 = 0
	local ratio2 = 0;		local ratio2 = 0
	if ~~(type(~~v1~~) == 'number'~~ and ~~type(~~v2~~) == 'number')~~ then		if v1 and v2 then
	ratio1 = (v2 + 0.05)/(v1 + 0.05)		ratio1 = (v2 + 0.05)/(v1 + 0.05)
	ratio1 = (ratio1 < 1) and 1/ratio1 or ratio1		ratio1 = (ratio1 < 1) and 1/ratio1 or ratio1
	end		end
	if ~~(type(~~v1~~) == 'number'~~ and ~~type(~~v3~~) == 'number')~~ then		if v1 and v3 then
	ratio2 = (v3 + 0.05)/(v1 + 0.05)		ratio2 = (v3 + 0.05)/(v1 + 0.05)
	ratio2 = (ratio2 < 1) and 1/ratio2 or ratio2		ratio2 = (ratio2 < 1) and 1/ratio2 or ratio2
Line 142:		Line 142:
	local v1 = color2lum(args[1])		local v1 = color2lum(args[1])
	local v2 = color2lum(args[2])		local v2 = color2lum(args[2])
	if ~~(type(~~v1~~) == 'number'~~ and ~~type(~~v2~~) == 'number')~~ then		if v1 and v2 then
	-- v1 should be the brighter of the two.		-- v1 should be the brighter of the two.
	if v2 > v1 then		if v2 > v1 then
Line 160:		Line 160:
	if args[2] then		if args[2] then
	local lum = color2lum(args[2])		local lum = color2lum(args[2])
	if lum ~~~= ''~~ then bg, lum_bg = args[2], lum end		if lum then bg, lum_bg = args[2], lum end
	end		end
	if args[3] then		if args[3] then
	local lum = color2lum(args[3])		local lum = color2lum(args[3])
	if lum ~~~= ''~~ then fg, lum_fg = args[3], lum end		if lum then fg, lum_fg = args[3], lum end
	end		end

Line 175:		Line 175:
	if (k:match('^[%s](background)[%s]$') or k:match('^[%s](background%-color)[%s]$')) then		if (k:match('^[%s](background)[%s]$') or k:match('^[%s](background%-color)[%s]$')) then
	local lum = color2lum(v)		local lum = color2lum(v)
	if( lum ~~~= '' )~~ then bg, lum_bg = v, lum end		if lum then bg, lum_bg = v, lum end
	elseif (k:match('^[%s](color)[%s]$')) then		elseif (k:match('^[%s](color)[%s]$')) then
	local lum = color2lum(v)		local lum = color2lum(v)
	if( lum ~~~= '' )~~ then bg, lum_fg = v, lum end		if lum then bg, lum_fg = v, lum end
	end		end
	end		end
Line 189:		Line 189:

	function p.lum(frame)		function p.lum(frame)
	return color2lum(frame.args[1] or frame:getParent().args[1])		return color2lum(frame.args[1] or frame:getParent().args[1]) or ''
	end		end

Mr. Stradivarius: unstrip nowiki strip markers

2016-06-18T14:50:30Z

unstrip nowiki strip markers

← Previous revision		Revision as of 14:50, 18 June 2016
Line 65:		Line 65:
	-- whitespace		-- whitespace
	c = c:match( '^%s(.-)[%s;]$' )		c = c:match( '^%s(.-)[%s;]$' )

			-- unstrip nowiki strip markers
			c = mw.text.unstripNoWiki(c)

	-- lowercase		-- lowercase

Mr. Stradivarius: sync

2016-06-18T14:48:37Z

sync

← Previous revision		Revision as of 14:48, 18 June 2016
Line 152:		Line 152:
	function p._styleratio(args)		function p._styleratio(args)
	local style = (args[1] or ''):lower()		local style = (args[1] or ''):lower()
	local bg, fg = ~~(args[2] or~~ 'white'), ~~(args[3] or~~ 'black')		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(style or '', ';')		local slist = mw.text.split(style or '', ';')
Line 160:		Line 170:
	k = k or ''		k = k or ''
	v = v or ''		v = v or ''
	if (k:match('^[%s](background)[%s]$') or k:match('^[%s](background-color)[%s]$')) then		if (k:match('^[%s](background)[%s]$') or k:match('^[%s](background%-color)[%s]$')) then
	bg = v		local lum = color2lum(v)
			if( lum ~= '' ) then bg, lum_bg = v, lum end
	elseif (k:match('^[%s](color)[%s]$')) then		elseif (k:match('^[%s](color)[%s]$')) then
	fg = v		local lum = color2lum(v)
			if( lum ~= '' ) then bg, lum_fg = v, lum end
	end		end
	end		end
			if lum_bg > lum_fg then

	return ~~p._ratio~~(~~{bg,~~ ~~fg,~~ ~~['error']~~ = ~~args['error']}~~)		return (lum_bg + 0.05)/(lum_fg + 0.05)
			else
			return (lum_fg + 0.05)/(lum_bg + 0.05)
			end
	end		end

Frietjes at 15:19, 1 August 2015

2015-08-01T15:19:22Z

← Previous revision		Revision as of 15:19, 1 August 2015
Line 154:		Line 154:
	local bg, fg = (args[2] or 'white'), (args[3] or 'black')		local bg, fg = (args[2] or 'white'), (args[3] or 'black')

	local slist = mw.text.split(s or '', ';')		local slist = mw.text.split(style or '', ';')
	for k = 1,#slist do		for k = 1,#slist do
	s = slist[k]		s = slist[k]

Frietjes at 15:16, 1 August 2015

2015-08-01T15:16:58Z

Show changes