Add E:CreateBackdrop

ls_UI/core/_core.xml

@@ -7,6 +7,7 @@
 	<!-- can sort -->
 	<Script file="animation.lua"/>
 	<Script file="border.lua"/>
+	<Script file="backdrop.lua"/>
 	<Script file="button.lua"/>
 	<Script file="changelog.lua"/>
 	<Script file="cooldown.lua"/>

ls_UI/core/backdrop.lua

@@ -0,0 +1,29 @@
+local _, ns = ...
+local E, C, PrC, M, L, P = ns.E, ns.C, ns.PrC, ns.M, ns.L, ns.P
+
+-- Lua
+local _G = getfenv(0)
+
+-- Mine
+function E:CreateBackdrop(parent)
+	local backdrop = CreateFrame("Frame", nil, parent, "BackdropTemplate")
+	backdrop:SetBackdrop({
+		bgFile = "Interface\\ChatFrame\\ChatFrameBackground",
+		edgeFile = "Interface\\AddOns\\ls_Glass\\assets\\border",
+		tile = true,
+		tileEdge = true,
+		tileSize = 8,
+		edgeSize = 8,
+		-- insets = {left = 4, right = 4, top = 4, bottom = 4},
+	})
+
+	-- the way Blizz position it creates really weird gaps, so fix it
+	backdrop.Center:ClearAllPoints()
+	backdrop.Center:SetPoint("TOPLEFT", backdrop.TopLeftCorner, "BOTTOMRIGHT", 0, 0)
+	backdrop.Center:SetPoint("BOTTOMRIGHT", backdrop.BottomRightCorner, "TOPLEFT", 0, 0)
+
+	backdrop:SetBackdropColor(0, 0, 0, 0.6)
+	backdrop:SetBackdropBorderColor(0, 0, 0, 0.6)
+
+	return backdrop
+end