[yawl] rgb to color util function

packages/manifest

@@ -363,7 +363,7 @@
 	["yawl"] = {
 		["manifestVersion"] = "1.0",
 		["package"] = "yawl",
-		["version"] = "1.6.0",
+		["version"] = "1.6.1",
 		["name"] = "Yet Another Widget Library",
 		["repo"] = "tree/master/yawl",
 		["description"] = "New version of libgui, but using libclass2 and cleaner code and interface.",

programs.cfg

@@ -375,7 +375,7 @@
     dependencies = {
       ["libclass2"] = "/"
     },
-    version = "1.6.0",
+    version = "1.6.1",
     name = "Yet Another Widget Library",
     description = "New version of libgui, but using libclass2 and cleaner code and interface.";
     authors = "AR2000AR,Renno231",

yawl/lib/yawl/utils.lua

@@ -0,0 +1,36 @@
+---@class yawlUtils
+
+local utils = {}
+
+---Take a color int (hex) and return it's red green and blue components
+---@param hex number
+---@return number
+---@return number
+---@return number
+function utils.colorToRGB(hex)
+    assert(hex >= 0 and hex <= 0xffffff)
+    local r = (hex & 0xff0000) >> 16
+    local g = (hex & 0x00ff00) >> 8
+    local b = (hex & 0x0000ff)
+    return r, g, b
+end
+
+---Take a RGB value and convert it to a color value
+---@param r number
+---@param g number
+---@param b number
+---@return number
+---@overload fun(rgb:table):number
+function utils.RGBtoColor(r, g, b)
+    assert(r >= 0x00 and r <= 0xff)
+    assert(g >= 0x00 and g <= 0xff)
+    assert(b >= 0x00 and b <= 0xff)
+    if (type(r) == "table") then
+        b = r[3]
+        g = r[2]
+        r = r[1]
+    end
+    return b + (g << 8) + (r << 16)
+end
+
+return utils