Автомобильные номера постсоветского пространства: различия между версиями
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-- | |||
-- This module implements | |||
-- {{Color contrast ratio}} | |||
-- {{Greater color contrast ratio}} | |||
-- {{ColorToLum}} | |||
-- {{RGBColorToLum}} | |||
-- | |||
local p = {} | |||
local HTMLcolor = mw.loadData( 'Module:Color contrast/colors' ) | |||
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 | |||
-- whitespace | |||
c = c:match( '^%s*(.-)[%s;]*$' ) | |||
-- lowercase | |||
c = c:lower() | |||
-- first try to look it up | |||
local L = HTMLcolor[c] | |||
if (L ~= nil) then | |||
return L | |||
end | |||
-- convert from hsl | |||
if mw.ustring.match(c,'^hsl%([%s]*[0-9][0-9%.]*[%s]*,[%s]*[0-9][0-9%.]*%%[%s]*,[%s]*[0-9][0-9%.]*%%[%s]*%)$') 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 | |||
function p._greatercontrast(args) | |||
local bias = tonumber(args['bias'] or '0') or 0 | |||
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 = 0; | |||
local ratio2 = 0; | |||
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 | |||
return (ratio1 + bias > ratio2) and c2 or c3 | |||
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(style or '', ';') | |||
for k = 1,#slist do | |||
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 | |||
function p.lum(frame) | |||
return color2lum(frame.args[1] or frame:getParent().args[1]) | |||
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.greatercontrast(frame) | |||
local args = frame.args[1] and frame.args or frame:getParent().args | |||
return p._greatercontrast(args) | |||
end | |||
return p |
Версия от 00:41, 12 июня 2015
-- -- This module implements -- Шаблон:Color contrast ratio --
- 000000
-- -- Шаблон:RGBColorToLum -- local p = {} local HTMLcolor = mw.loadData( 'Module:Color contrast/colors' )
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 -- whitespace c = c:match( '^%s*(.-)[%s;]*$' )
-- lowercase c = c:lower()
-- first try to look it up local L = HTMLcolor[c] if (L ~= nil) then return L end
-- convert from hsl if mw.ustring.match(c,'^hsl%([%s]*[0-9][0-9%.]*[%s]*,[%s]*[0-9][0-9%.]*%%[%s]*,[%s]*[0-9][0-9%.]*%%[%s]*%)$') 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
function p._greatercontrast(args) local bias = tonumber(args['bias'] or '0') or 0 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 = 0; local ratio2 = 0; 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 return (ratio1 + bias > ratio2) and c2 or c3 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(style or , ';') for k = 1,#slist do 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
function p.lum(frame) return color2lum(frame.args[1] or frame:getParent().args[1]) 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.greatercontrast(frame) local args = frame.args[1] and frame.args or frame:getParent().args return p._greatercontrast(args) end
return p