give the inventory formspec a background and make the armor tab have a 3d model

mods/ITEMS/3d_armor/3d_armor/api.lua

@@ -34,7 +34,8 @@ armor = {
 	elements = {"head", "torso", "legs", "feet"},
 	physics = {"jump", "speed", "gravity"},
 	attributes = {"heal", "fire", "water"},
-	formspec = "image[2.5,0;2,4;armor_preview]"..
+	formspec = "model[2.5,0;2,4;armor_preview]" ..
+	-- "image[2.5,0;2,4;armor_preview]"..
 		default.gui_bg..
 		default.gui_bg_img..
 		default.gui_slots..
@@ -525,7 +526,20 @@ armor.get_armor_formspec = function(self, name, listring)
 		formspec = formspec.."listring[current_player;main]"..
 			"listring[detached:"..name.."_armor;armor]"
 	end
-	formspec = formspec:gsub("armor_preview", armor.textures[name].preview)
+	-- formspec = formspec:gsub("armor_preview", armor.textures[name].preview)
+	local player = minetest.get_player_by_name(name)
+	local anim = player:get_local_animation()
+	local player_model = table.concat({
+		"player_model_"..name,
+		player:get_properties().mesh,
+		table.concat(player:get_properties().textures,","),
+		table.concat({0,-150},","),
+		"false",
+		"true",
+		table.concat({anim.x,anim.y},","),
+		"30"
+	},";")
+	formspec = formspec:gsub("armor_preview",player_model)
 	formspec = formspec:gsub("armor_level", armor.def[name].level)
 	for _, attr in pairs(self.attributes) do
 		formspec = formspec:gsub("armor_attr_"..attr, armor.def[name][attr])

mods/PLAYER/sfinv/api.lua

@@ -35,7 +35,6 @@ function sfinv.get_nav_fs(player, context, nav, current_idx)
 		return ""
 	end
 end
-
 local theme_inv = [[
 		image[0,5.2;1,1;gui_hb_bg.png]
 		image[1,5.2;1,1;gui_hb_bg.png]
@@ -52,6 +51,7 @@ local theme_inv = [[
 function sfinv.make_formspec(player, context, content, show_inv, size)
 	local tmp = {
 		size or "size[8,9.1]",
+		"background9[-2,-2;12,13.1;sfinv_bg.png;false;64,96]",
 		sfinv.get_nav_fs(player, context, context.nav_titles, context.nav_idx),
 		show_inv and theme_inv or "",
 		content

mods/PLAYER/sfinv/init.lua

@@ -7,8 +7,10 @@ local S = minetest.get_translator("sfinv")
 
 sfinv.register_page("sfinv:crafting", {
 	title = S("Crafting"),
+	icon = "crafting_icon.png",
 	get = function(self, player, context)
 		return sfinv.make_formspec(player, context, [[
+				style_type[list;size=1,spacing=.5]
 				list[current_player;craft;1.75,0.5;3,3;]
 				list[current_player;craftpreview;5.75,1.5;1,1;]
 				image[4.75,1.5;1,1;sfinv_crafting_arrow.png]