CursorGlow.lua

function CursorGlow_OnLoad()
	CursorGlowGlow:SetAlpha(0.5);
	CursorGlowGlow:SetVertexColor(0.7,0.7,1);
	this:SetAlpha(0);
	this.lastX = 0;
	this.lastY = 0;
   	this.angle = 0;
end

local origSetCursor = SetCursor;
function SetCursor(cursor)
	if ( cursor == "CAST_CURSOR" ) then
		CursorGlowFrame.nofade = 1;
	else
		CursorGlowFrame.nofade = nil;
	end
	return origSetCursor(cursor);
end

local origResetCursor = ResetCursor;
function ResetCursor()
	CursorGlowFrame.nofade = nil;
	return origResetCursor();
end

function CursorGlow_OnUpdate(elapsed)
	local curX, curY = GetCursorPosition();
	if ( curX ~= this.lastX or curY ~= this.lastY ) then
		local scale = UIParent:GetScale();
		this:SetPoint("CENTER", "UIParent", "BOTTOMLEFT", curX/scale, curY/scale );
		this.fade = nil;
	elseif ( not this.fade ) then
		this.fade = 1.5;
	end
	CursorGlowGlow:Hide();
	local r,g,b = 0.5,0.5,0.5;
	if ( SpellIsTargeting() ) then
		CursorGlowGlow:Show();
		CursorGlowTexture:SetTexture("Spells\\AuraRune8");
		if ( SpellCanTargetUnit("mouseover") or this.nofade ) then
			CursorGlowGlow:SetAlpha(0.5);
			r,g,b=0.3,0.3,1;
		else
			CursorGlowGlow:SetAlpha(0.15);
			r,g,b=0.8,0.8,0.8;
		end
		this.fade = nil;
	else
		CursorGlowTexture:SetTexture("Spells\\AuraRune256");
		if ( UnitIsEnemy("player","mouseover") ) then
			r,g,b=0.5,0,0;
		elseif ( UnitIsFriend("player","mouseover") ) then
			r,g,b=0.25,0.75,0.25;
		end
		if ( IsControlKeyDown() ) then
			r,g,b=r*2,g*2,b*2;
			this.fade = nil;
		end
	end
	CursorGlowTexture:SetVertexColor(r,g,b);
	if ( this.fade and not this.nofade ) then
		this.fade = this.fade - elapsed;
		if ( this.fade > 0 ) then
			this:SetAlpha(1 * min((this.fade/1),1));
		else
			this:SetAlpha(0);
		end
	else
		this:SetAlpha(1);
	end
	this.lastX = curX;
	this.lastY = curY;

	-- Iriel's spinny code
	this.angle = this.angle + (arg1 / 30);
	local a = math.deg(this.angle - 45);

	local l = 1;

	local s = math.sin(a) * 0.75;
	local c = math.cos(a) * 0.75;

	local f = CursorGlowTexture;

	f:SetTexCoord(0.5-s, 0.5+c,
		 0.5+c, 0.5+s,
		 0.5-c, 0.5-s,
		 0.5+s, 0.5-c);
end