Modul:Kontrast boja - Povijest promjena

WikiSysop u (test) 09:58, 15. travanj 2026.

2026-04-15T09:58:22Z

←Starija inačica		Inačica od 15. travanj 2026. u 09:58
Redak 1:		Redak 1:
	local p = {}		local p = {}
	local HTMLcolor = mw.loadData('Modul:~~Kontrast boja~~/boje')		local HTMLcolor = mw.loadData('Modul:Kontrast_boja/boje')

			-- lokalni cache za HEX u glavnom modulu
			local hexCache = {}

	~~-- sRGB linearization~~
	local function sRGB(v)		local function sRGB(v)
	if v <= 0.03928 then		if v <= 0.03928 then
Redak 11:		Redak 13:
	end		end

	~~-- RGB → luminancija~~
	local function rgbdec2lum(R, G, B)		local function rgbdec2lum(R, G, B)
	if R and G and B and R>=0 and R<256 and G>=0 and G<256 and B>=0 and B<256 then		if R and G and B and R>=0 and R<256 and G>=0 and G<256 and B>=0 and B<256 then
Redak 19:		Redak 20:
	end		end

	~~-- HSL → luminancija~~		local function hex2lum(hex)
			hex = hex:lower():gsub("^#", "")
			if hexCache[hex] then
			return hexCache[hex]
			end

			local r,g,b
			if #hex == 3 then
			r = tonumber(hex:sub(1,1)..hex:sub(1,1), 16)
			g = tonumber(hex:sub(2,2)..hex:sub(2,2), 16)
			b = tonumber(hex:sub(3,3)..hex:sub(3,3), 16)
			elseif #hex == 6 then
			r = tonumber(hex:sub(1,2), 16)
			g = tonumber(hex:sub(3,4), 16)
			b = tonumber(hex:sub(5,6), 16)
			else
			return nil
			end

			local L = rgbdec2lum(r, g, b)
			hexCache[hex] = L
			return L
			end

	local function hsl2lum(h, s, l)		local function hsl2lum(h, s, l)
	if not (h and s and l) then return nil end		if not (h and s and l) then return nil end
Redak 37:		Redak 61:
	end		end

	~~-- Glavna funkcija: bilo koji format boje → luminancija~~
	local function color2lum(c)		local function color2lum(c)
	if not c then return nil end		if not c then return nil end
Redak 43:		Redak 66:
	c = mw.text.unstripNoWiki(c):lower():gsub("#", "#"):match("^%s(.-)%s$")		c = mw.text.unstripNoWiki(c):lower():gsub("#", "#"):match("^%s(.-)%s$")

	-- 1) ~~Ime~~ boje		-- 1) ime boje
	if HTMLcolor[c] then return HTMLcolor[c] end		if HTMLcolor[c] then
			return HTMLcolor[c]
			end

	-- 2) HEX ~~#rgb / #rrggbb~~		-- 2) HEX
	local hex = c:match("^#?([a-f0-9]+)$")		local hex = c:match("^#?([a-f0-9]+)$")
	if hex then		if hex then
	return ~~HTMLcolor.hex~~(hex)		return hex2lum(hex)
	end		end

	-- 3) rgb()		-- 3) rgb()
	local R,G,B = c:match("^rgb%(%s(%d+)%s,%s(%d+)%s,%s(%d+)%s%)$")		local R,G,B = c:match("^rgb%(%s(%d+)%s,%s(%d+)%s,%s(%d+)%s%)$")
	if R then return rgbdec2lum(tonumber(R), tonumber(G), tonumber(B)) end		if R then
			return rgbdec2lum(tonumber(R), tonumber(G), tonumber(B))
			end

	-- 4) rgb%()		-- 4) rgb%()
	local Rp,Gp,Bp = c:match("^rgb%(%s([%d%.]+)%%%s,%s([%d%.]+)%%%s,%s([%d%.]+)%%%s%)$")		local Rp,Gp,Bp = c:match("^rgb%(%s([%d%.]+)%%%s,%s([%d%.]+)%%%s,%s([%d%.]+)%%%s%)$")
	if Rp then return rgbdec2lum(255Rp/100, 255Gp/100, 255*Bp/100) end		if Rp then
			return rgbdec2lum(255Rp/100, 255Gp/100, 255*Bp/100)
			end

	-- 5) hsl()		-- 5) hsl()
	local h,s,l = c:match("^hsl%(%s([%d%.]+)%s,%s([%d%.]+)%%%s,%s([%d%.]+)%%%s%)$")		local h,s,l = c:match("^hsl%(%s([%d%.]+)%s,%s([%d%.]+)%%%s,%s([%d%.]+)%%%s%)$")
	if h then return hsl2lum(tonumber(h), tonumber(s)/100, tonumber(l)/100) end		if h then
			return hsl2lum(tonumber(h), tonumber(s)/100, tonumber(l)/100)
			end

	return nil		return nil
	end		end

	~~-- API~~
	function p._lum(color)		function p._lum(color)
	return color2lum(color)		return color2lum(color)
Redak 100:		Redak 130:

	return best		return best
			end

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

			function p.ratio(frame)
			local args = frame.args[1] and frame.args or frame:getParent().args
			local v1 = color2lum(args[1])
			local v2 = color2lum(args[2])
			if v1 and v2 then
			if v2 > v1 then v1, v2 = v2, v1 end
			return (v1 + 0.05)/(v2 + 0.05)
			end
			return args.error or '?'
	end		end

WikiSysop u (test) 09:42, 15. travanj 2026.

2026-04-15T09:42:58Z

Prikaži promjene

WikiSysop u (test) 09:21, 15. travanj 2026.

2026-04-15T09:21:25Z

←Starija inačica		Inačica od 15. travanj 2026. u 09:21
Redak 151:		Redak 151:
	c2 = '#' .. c2		c2 = '#' .. c2
	end		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		if mw.ustring.match(c3, '^[A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9]$') or mw.ustring.match(c3, '^[A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9][A-Fa-f0-9]$') then c3 = '#' .. c3
	c3 = '#' .. c3		end
	end
	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

Suradnik10: preuzeto s hr.wikipedije

2025-04-14T19:03:41Z

preuzeto s hr.wikipedije

Nova stranica

local p = {}
local HTMLcolor = mw.loadData( 'Module:Kontrast boja/boje' )

local function sRGB (v)
if (v <= 0.03928) then
v = v / 12.92
else
v = math.pow((v+0.055)/1.055, 2.4)
end
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

local function color2lum(c)

if (c == nil) then
return ''
end

-- html '#' entity
c = c:gsub("#", "#")

-- whitespace
c = c:match( '^%s*(.-)[%s;]*$' )

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

-- lowercase
c = c:lower()

-- first try to look it up
local L = HTMLcolor[c]
if (L ~= nil) then
return L
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
c = mw.ustring.match(c, '^[%s#]*([a-f0-9]*)[%s]*$')

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

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

return rgbdec2lum(R, G, B)
end

-- failure, return blank
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

function p._jacikontrast(args)
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 c2 = args[2] or '#FFFFFF'
local v2 = color2lum(c2)
local c3 = args[3] or '#000000'
local v3 = color2lum(c3)
local ratio1 = -1;
local ratio2 = -1;
if (type(v1) == 'number' and type(v2) == 'number') then
ratio1 = (v2 + 0.05)/(v1 + 0.05)
ratio1 = (ratio1 < 1) and 1/ratio1 or ratio1
end
if (type(v1) == 'number' and type(v3) == 'number') then
ratio2 = (v3 + 0.05)/(v1 + 0.05)
ratio2 = (ratio2 < 1) and 1/ratio2 or ratio2
end

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

function p._ratio(args)
local v1 = color2lum(args[1])
local v2 = color2lum(args[2])
if (type(v1) == 'number' and type(v2) == 'number') then
-- v1 should be the brighter of the two.
if v2 > v1 then
v1, v2 = v2, v1
end
return (v1 + 0.05)/(v2 + 0.05)
else
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;', '#'), '#', '#'), ';')
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

--[[
Use {{#invoke:Kontrast boja|somecolor}} directly or
{{#invoke:Kontrast boja}} from a wrapper template.

Parameters:
-- |1= — required; A color to check.
--]]
function p.lum(frame)
local color = frame.args[1] or frame:getParent().args[1]
return p._lum(color)
end

function p.ratio(frame)
local args = frame.args[1] and frame.args or frame:getParent().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

function p.jacikontrast(frame)
local args = frame.args[1] and frame.args or frame:getParent().args
return p._jacikontrast(args)
end

return p