Module:Layout/Production/Library/Color

 Deze module is nog in ontwikkeling (versie 0.0) en wordt getest.

De Module:Layout is bedoeld om snel, consistent en uitgebreid een pagina op te maken.
Er is een op de module afgestemde handleiding over deze onderwijswiki beschikbaar.

De module wordt geïnitialiseerd met de configuratie in Module:Layout/Production/Configuration.

Controleer op scriptfouten of opmaak notificaties.

Test

Deze module wordt getest door Module:Layout/Production/Test/Color

All 3 tests are ok.

	Name	Expected	Actual
	test_color_shades
	test_color_tints
	test_color_valid

Code

---

local color = {}

-- This function returns an array of shades based on the r, g, b color and the number of tones.
function color.shades( r, g, b, tones ) -- : array
	local shades = {};
	local step = 1 / ( tones + 1 );
    for i = 1, tones do
        local factor = i * step;
        shades[ i ] =  string.format( "#%02X%02X%02X", r * factor,  g * factor,  b * factor );
    end
    return shades;
end

-- This function returns an array of tints based on the r, g, b color and the number of tones.
function color.tints( r, g, b, tones ) -- : array
	local tints = {};
	local step = 1 / ( tones + 1 );
    for i = 1, tones do
        local factor = i * step;
        tints[ i ] =  string.format( "#%02X%02X%02X", r + ( 255 - r ) * factor,  g + ( 255 - g ) * factor,  b + ( 255 - b ) * factor );
    end
    return tints;
end

-- Only allow 6-digit hexadecimal color codes
function color.valid( hexacode ) -- : boolean
	-- Allow a single code as well as an array of codes
	local codes = {};
	if type( hexacode ) ~= "table" and type( hexacode ) ~= "string" then return false; end
	if type( hexacode ) == "table" then codes = hexacode; else codes = { hexacode }; end

	-- All codes must be correct
	for index, value in ipairs( codes ) do
		--The code should be a string
	    if not type( value ) == "string" then return false; end
	    value = mw.text.trim( value );
	    -- Skip empty values
	    if value ~= "" then
	    	-- Allow codes without the # prefix
	        if string.sub( value, 1, 1 ) ~= "#" then value = "#" .. value; end
        	-- The string.match( hexcode, "^#(%x%x%x)$" ) check is also correct for colorcodes but not in this module
	        if not string.match( value, "^#(%x%x%x%x%x%x)$" ) then return false; end
	    end
	end
	return true;
end

return color;