Split row color logic out into its own file

GnomishVendorShrinker.lua

@@ -43,7 +43,6 @@ local function PopoutOnClick(self, button)
 	local _, _, _, _, _, _, _, itemStackSize = GetItemInfo(link)
 
 	local size = numAvailable > 0 and numAvailable or itemStackSize
-	-- OpenStackSplitFrame(size, self, "LEFT", "RIGHT")
 	OpenStackSplitFrame(250, self, "LEFT", "RIGHT")
 end
 
@@ -227,71 +226,18 @@ for i=1,NUMROWS do
 end
 
 
-local RECIPE = GetItemClassInfo(LE_ITEM_CLASS_RECIPE)
-local MISC = GetItemClassInfo(LE_ITEM_CLASS_MISCELLANEOUS)
-local GARRISON_ICON = {[1001489] = true, [1001490] = true, [1001491] = true}
-local function Knowable(link)
-	local name, link2, quality, iLevel, reqLevel, class, subclass, maxStack, equipSlot, texture, vendorPrice = GetItemInfo(link)
-	local id = ns.ids[link]
-
-	if C_Heirloom.IsItemHeirloom(id) then return true end
-	if class == MISC and select(2, C_ToyBox.GetToyInfo(id)) then return true end
-	if class == RECIPE or GARRISON_ICON[texture] then return true end
-end
-
-
-local function RecipeNeedsRank(link)
-	local _, _, _, _, _, class = GetItemInfo(link)
-	if class ~= RECIPE then return end
-	return ns.unmet_requirements[link]
-end
-
-
-local default_grad = {0,1,0,0.75, 0,1,0,0} -- green
-local grads = setmetatable({
-	red = {1,0,0,0.75, 1,0,0,0},
-	[1] = {1,1,1,0.75, 1,1,1,0}, -- white
-	[2] = default_grad, -- green
-	[3] = {0.5,0.5,1,1, 0,0,1,0}, -- blue
-	[4] = {1,0,1,0.75, 1,0,1,0}, -- purple
-	[7] = {1,.75,.5,0.75, 1,.75,.5,0}, -- heirloom
-}, {__index = function(t,i) t[i] = default_grad return default_grad end})
-local quality_colors = setmetatable({}, {__index = function() return "|cffffffff" end})
-for i=0,7 do quality_colors[i] = "|c".. select(4, GetItemQualityColor(i)) end
-
 local function ShowMerchantItem(row, i)
 	local name, itemTexture, itemPrice, itemStackCount, numAvailable, isUsable, extendedCost = GetMerchantItemInfo(i)
 	local link = GetMerchantItemLink(i)
-	local color = quality_colors.default
-	row.backdrop:Hide()
 
-	if not isUsable then
+	local gradient, shown = ns.GetRowGradient(i)
-		row.backdrop:SetGradientAlpha("HORIZONTAL", unpack(grads.red))
+	row.backdrop:SetGradientAlpha("HORIZONTAL", unpack(gradient))
-		row.backdrop:Show()
+	row.backdrop:SetShown(shown)
-	end
-
-	if link then
-		local name, link2, quality, iLevel, reqLevel, class, subclass, maxStack, equipSlot, texture, vendorPrice = GetItemInfo(link)
-		local id = ns.ids[link]
-		local is_heirloom = C_Heirloom.IsItemHeirloom(id)
-		color = quality_colors[quality]
-
-		if Knowable(link) then
-			if ns.knowns[link] then
-				color = quality_colors[0]
-				row.backdrop:Hide()
-			elseif RecipeNeedsRank(link) then
-				row.backdrop:SetGradientAlpha("HORIZONTAL", unpack(grads.red))
-				row.backdrop:Show()
-			else
-				row.backdrop:SetGradientAlpha("HORIZONTAL", unpack(grads[quality]))
-				row.backdrop:Show()
-			end
-		end
-	end
 
 	row.icon:SetTexture(itemTexture)
-	row.ItemName:SetText((numAvailable > -1 and ("["..numAvailable.."] ") or "").. color.. (name or "<Loading item data>").. (itemStackCount > 1 and ("|r x"..itemStackCount) or ""))
+
+	local textcolor = ns.GetRowTextColor(i)
+	row.ItemName:SetText((numAvailable > -1 and ("["..numAvailable.."] ") or "").. textcolor.. (name or "<Loading item data>").. (itemStackCount > 1 and ("|r x"..itemStackCount) or ""))
 
 	for i,v in pairs(row.altframes) do v:Hide() end
 	row.altcurrency = extendedCost
@@ -313,7 +259,8 @@ local function ShowMerchantItem(row, i)
 		row.extendedCost = nil
 	end
 
-	if isUsable then row.icon:SetVertexColor(1, 1, 1) else row.icon:SetVertexColor(.9, 0, 0) end
+	row.icon:SetVertexColor(ns.GetRowVertexColor(i))
+
 	row:SetID(i)
 	row:Show()
 end

GnomishVendorShrinker.toc

@@ -17,5 +17,6 @@ tekFunks\gsc.lua
 tekKonfig\tekKonfig.xml
 LibItemSearch-1.0.lua
 
+RowShader.lua
 KnownScanner.lua
 GnomishVendorShrinker.lua

RowShader.lua

@@ -0,0 +1,95 @@
+
+local myname, ns = ...
+
+
+
+local RECIPE = GetItemClassInfo(LE_ITEM_CLASS_RECIPE)
+local MISC = GetItemClassInfo(LE_ITEM_CLASS_MISCELLANEOUS)
+local GARRISON_ICONS = {[1001489] = true, [1001490] = true, [1001491] = true}
+
+
+local function Knowable(link)
+	local id = ns.ids[link]
+	if C_Heirloom.IsItemHeirloom(id) then return true end
+
+	local _, _, _, _, _, class, _, _, _, texture = GetItemInfo(link)
+	if class == MISC and select(2, C_ToyBox.GetToyInfo(id)) then return true end
+	if class == RECIPE or GARRISON_ICONS[texture] then return true end
+end
+
+
+local function RecipeNeedsRank(link)
+	local _, _, _, _, _, class = GetItemInfo(link)
+	if class ~= RECIPE then return end
+	return ns.unmet_requirements[link]
+end
+
+
+local DEFAULT_GRAD = {0,1,0,0.75, 0,1,0,0} -- green
+local GRADS = {
+	red = {1,0,0,0.75, 1,0,0,0},
+	[1] = {1,1,1,0.75, 1,1,1,0}, -- white
+	[2] = DEFAULT_GRAD, -- green
+	[3] = {0.5,0.5,1,1, 0,0,1,0}, -- blue
+	[4] = {1,0,1,0.75, 1,0,1,0}, -- purple
+	[7] = {1,.75,.5,0.75, 1,.75,.5,0}, -- heirloom
+}
+GRADS = setmetatable(GRADS, {
+	__index = function(t,i)
+		t[i] = DEFAULT_GRAD
+		return DEFAULT_GRAD
+	end
+})
+
+
+function ns.GetRowGradient(index)
+	local gradient = DEFAULT_GRAD
+	local shown = false
+
+	local _, _, _, _, _, isUsable = GetMerchantItemInfo(index)
+	if not isUsable then
+		gradient = GRADS.red
+		shown = true
+	end
+
+	local link = GetMerchantItemLink(index)
+	if not (link and Knowable(link)) then return gradient, shown end
+
+	if ns.knowns[link] then
+		return gradient, false
+	elseif RecipeNeedsRank(link) then
+		return GRADS.red, true
+	else
+		return GRADS[quality], true
+	end
+end
+
+
+local QUALITY_COLORS = setmetatable({}, {
+	__index = function(t,i)
+		-- GetItemQualityColor only takes numbers, so fall back to white
+		local _, _, _, hex = GetItemQualityColor(tonumber(i) or 1)
+		t[i] = "|c".. hex
+		return "|c".. hex
+	end
+})
+
+
+function ns.GetRowTextColor(index)
+	local link = GetMerchantItemLink(index)
+	if not link then return QUALITY_COLORS.default end
+
+	-- Grey out if already known
+	if Knowable(link) and ns.knowns[link] then return QUALITY_COLORS[0] end
+
+	local _, _, quality = GetItemInfo(link)
+	return QUALITY_COLORS[quality]
+end
+
+
+function ns.GetRowVertexColor(index)
+	local _, _, _, _, _, isUsable = GetMerchantItemInfo(index)
+	if isUsable then return 1.0, 1.0, 1.0
+	else             return 0.9, 0.0, 0.0
+	end
+end