Module:Color contrast: Difference between revisions
add support for rgb(x,y,z)
m>Frietjes (combine) |
m>Frietjes (add support for rgb(x,y,z)) |
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local function rgbdec2lum( R, G, B ) | local function rgbdec2lum( R, G, B ) | ||
return 0.2126 * sRGB(R/255) + 0.7152 * sRGB(G/255) + 0.0722 * sRGB(B/255) | 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 | 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 | ||
| Line 49: | Line 52: | ||
b = b + x | b = b + x | ||
end | end | ||
return rgbdec2lum(255*r, 255*g, 255*b) | |||
else | |||
return '' | |||
end | end | ||
end | end | ||
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-- convert from hsl | -- convert from hsl | ||
if mw.ustring.match(c,'^ | if mw.ustring.match(c,'^[Hh][Ss][Ll]%([%s]*[0-9][0-9]*[%s]*,[%s]*[0-9][0-9]*%%[%s]*,[%s]*[0-9][0-9]*%%[%s]*%)$') then | ||
local h, s, l = mw.ustring.match(c,'^ | local h, s, l = mw.ustring.match(c,'^[Hh][Ss][Ll]%([%s]*([0-9][0-9]*)[%s]*,[%s]*([0-9][0-9]*)%%[%s]*,[%s]*([0-9][0-9]*)%%[%s]*%)$') | ||
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,'^[Rr][Gg][Bb]%([%s]*[0-9][0-9]*[%s]*,[%s]*[0-9][0-9]*[%s]*,[%s]*[0-9][0-9]*[%s]*%)$') then | |||
local R, G, B = mw.ustring.match(c,'^[Rr][Gg][Bb]%([%s]*([0-9][0-9]*)[%s]*,[%s]*([0-9][0-9]*)[%s]*,[%s]*([0-9][0-9]*)[%s]*%)$') | |||
return rgbdec2lum(tonumber(R), tonumber(G), tonumber(B)) | |||
end | end | ||