more consistent formspec size decision

init.lua

@@ -49,6 +49,8 @@ local ui = unified_inventory
 ui.style_full = {
 	formspec_x = 1,
 	formspec_y = 1,
+	formw = 17.75,
+	formh = 12.25,
 	pagecols = 8,
 	pagerows = 10,
 	page_x = 10.75,
@@ -80,6 +82,8 @@ ui.style_full = {
 ui.style_lite = {
 	formspec_x =  0.6,
 	formspec_y =  0.6,
+	formw = 14,
+	formh = 9.75,
 	pagecols = 4,
 	pagerows = 6,
 	page_x = 10.5,

internal.lua

@@ -40,18 +40,15 @@ function ui.get_formspec(player, page)
 	if not pagedef then
 		return "" -- Invalid page name
 	end
-
+	
 	local formspec = {
-		"formspec_version[4]size[17.75,12.25]",
+		"formspec_version[4]",
+		"size["..ui_peruser.formw..","..ui_peruser.formh.."]",
 		pagedef.formspec_prepend and "" or "no_prepend[]",
-		ui.standard_background -- Background
+		ui.standard_background
 	}
-	local n = 4
 
-	if draw_lite_mode then
-		formspec[1] = "formspec_version[4]size[14,9.75]"
-		formspec[3] = ui.standard_background
-	end
+	local n = 5
 
 	local perplayer_formspec = ui.get_per_player_formspec(player_name)
 	local fsdata = pagedef.get_formspec(player, perplayer_formspec)