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309 lines
6.9 KiB
309 lines
6.9 KiB
<?xml version="1.0" encoding="iso-8859-1"?>
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<!DOCTYPE muclient>
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<!-- Saved on Saturday, May 12, 2018, 12:51 AM -->
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<!-- MuClient version 5.06-pre -->
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<!-- Plugin "Contrast_Picker" generated by Plugin Wizard -->
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<muclient>
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<plugin
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name="Contrast_Picker"
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author="Crowley"
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id="977138a7afb5ab493795edb7"
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language="Lua"
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purpose="Checks contrast ratios to pick better contrasting colors."
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save_state="y"
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date_written="2018-05-12 00:48:25"
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requires="4.80"
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version="1.0"
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>
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</plugin>
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<!-- Aliases -->
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<aliases>
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<alias
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script="onCommand"
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match="^contrast (.*?)(?:\s(.*?))?(?:\s(.*?))?$"
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enabled="y"
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group="ContrastChecker"
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regexp="y"
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send_to="12"
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sequence="100"
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>
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</alias>
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</aliases>
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<!-- Script -->
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<script>
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<![CDATA[
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color_table = {
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"pink",
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"lightpink",
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"hotpink",
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"deeppink",
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"palevioletred",
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"mediumvioletred",
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"lightsalmon",
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"salmon",
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"darksalmon",
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"lightcoral",
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"indianred",
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"crimson",
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"firebrick",
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"darkred",
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"red",
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"orangered",
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"tomato",
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"coral",
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"darkorange",
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"orange",
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"yellow",
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"lightyellow",
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"lemonchiffon",
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"lightgoldenrodyellow",
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"papayawhip",
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"moccasin",
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"peachpuff",
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"palegoldenrod",
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"khaki",
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"darkkhaki",
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"gold",
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"cornsilk",
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"blanchedalmond",
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"bisque",
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"navajowhite",
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"wheat",
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"burlywood",
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"tan",
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"rosybrown",
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"sandybrown",
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"goldenrod",
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"darkgoldenrod",
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"peru",
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"chocolate",
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"saddlebrown",
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"sienna",
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"brown",
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"maroon",
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"lavender",
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"thistle",
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"plum",
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"violet",
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"orchid",
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"fuchsia",
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"magenta",
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"mediumorchid",
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"mediumpurple",
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"blueviolet",
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"darkviolet",
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"darkorchid",
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"darkmagenta",
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"purple",
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"indigo",
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"slateblue",
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"darkslateblue",
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"mediumslateblue",
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"greenyellow",
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"chartreuse",
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"lawngreen",
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"lime",
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"limegreen",
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"palegreen",
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"lightgreen",
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"mediumspringgreen",
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"springgreen",
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"mediumseagreen",
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"seagreen",
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"forestgreen",
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"green",
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"darkgreen",
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"yellowgreen",
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"olivedrab",
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"olive",
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"darkolivegreen",
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"mediumaquamarine",
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"darkseagreen",
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"lightseagreen",
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"darkcyan",
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"teal",
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"aqua",
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"cyan",
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"lightcyan",
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"paleturquoise",
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"aquamarine",
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"turquoise",
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"mediumturquoise",
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"darkturquoise",
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"cadetblue",
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"steelblue",
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"lightsteelblue",
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"powderblue",
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"lightblue",
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"skyblue",
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"lightskyblue",
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"deepskyblue",
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"dodgerblue",
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"cornflowerblue",
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"mediumslateblue",
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"royalblue",
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"blue",
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"mediumblue",
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"darkblue",
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"navy",
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"midnightblue",
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"white",
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"snow",
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"honeydew",
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"mintcream",
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"azure",
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"aliceblue",
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"ghostwhite",
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"whitesmoke",
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"seashell",
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"beige",
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"oldlace",
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"floralwhite",
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"ivory",
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"antiquewhite",
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"linen",
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"lavenderblush",
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"mistyrose",
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"gainsboro",
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"lightgrey",
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"silver",
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"darkgray",
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"gray",
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"dimgray",
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"lightslategray",
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"slategray",
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"darkslategray",
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"black"
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}
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function lumRGB(s)
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local red, green, blue, l = 0, 0, 0, 0
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red = s%256
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s = math.floor(s/256)
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green = s%256
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s = math.floor(s/256)
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blue = s%256
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red = lumForm(red)
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green = lumForm(green)
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blue = lumForm(blue)
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l = (0.2126*red) + (0.7152*green) + (0.0722*blue)
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return l
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end
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function lumForm(s)
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local s = tonumber(s)
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s = s/255
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if s <= 0.03928 then
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s = s/12.92
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else
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s = ((s+0.055)/1.055)^2.4
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end
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return s
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end
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function contrastCheck(a, b)
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local a, b, s = tonumber(a), tonumber(b), 0
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if a > b then
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s = (a + 0.05)/(b + 0.05)
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else
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s = (b + 0.05)/(a + 0.05)
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end
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return s
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end
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function checkColor(s, b, e)
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local max = 0
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local b, e = tonumber(b), tonumber(e)
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local ctable = {}
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local sortcolors = {}
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local l = lumRGB(ColourNameToRGB(s))
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for _,v in ipairs(color_table) do
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local ctrast = contrastCheck(l, lumRGB(ColourNameToRGB(v)))
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if ctrast > 1 then
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table.insert(ctable, {color = v, contrast = ctrast})
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end
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end
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table.sort(ctable, function(a,b) return a.contrast > b.contrast end)
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if b == "" or b == nil then b = 1 end
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if e == "" or e == nil then e = 20 end
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if e > #ctable then
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if b > e then
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b = 1
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e = #ctable
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else
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e = #ctable
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end
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end
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if b > e then
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if e < 21 then
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b = 1
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else
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b = e - 20
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end
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end
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Note("Showing best matches for " .. s .. ":")
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if #ctable > 0 then
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for i = b,e do
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ColourNote(s, ctable[i].color, i .. " - Sample text using " .. s .. " on " .. ctable[i].color .. " background. (" .. string.format("%.2f", ctable[i].contrast) .. ":1)")
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end
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else
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ColourNote(s, "", "Sorry, " .. s .. " does not pair well with any background, except maybe black.")
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end
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end
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function onCommand(name, line, arg)
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if arg[1]:upper() == "HELP" then
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onHelp()
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else
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checkColor(arg[1], arg[2], arg[3])
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end
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end
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function onHelp()
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Note("Contrast Generator Help:")
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Note("contrast help - Brings up this help file")
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Note("contrast <color> - Returns the top 20 contrast ratios")
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Note("contrast <color> <num1> <num2> - Returns contrast ratios ranked num1 through num2")
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Note("*<color> must be html color name (e.g. aliceblue, yellow, darkgreen, etc.)")
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Note("")
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Note("This plugin helps you decide the best contrasting colors by comparing")
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Note("the luminance values and returning a ratio. Ratios are ranked from 1:1")
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Note("to 21:1. The higher the ratio, the better the contrast, thus the better")
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Note("your ability to read the text will be.")
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end
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function OnPluginInstall()
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if not GetVariable("already_sent") then
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onHelp()
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SetVariable("already_sent", "true")
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end
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end
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]]>
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</script>
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</muclient>
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