Use images for next/prev buttons in Creative

mods/creative/init.lua

@@ -95,8 +95,9 @@ creative.get_creative_formspec = function(player, start_i, pagenum)
 	return
 		"list[detached:creative_"..player_name..";main;0.25,0.25;7,4;"..tostring(start_i).."]"..
 		"label[7.5,0.75;"..F(S("@1/@2", pagenum, pagemax)).."]"..
-                default.ui.button(7.25, 1.25, 1, 1, "creative_prev", "<<")..
+
-                default.ui.button(7.25, 2.25, 1, 1, "creative_next", ">>")..
+                default.ui.image_button(7.25, 1.25, 1, 1, "creative_prev", "ui_icon_prev.png")..
+                default.ui.image_button(7.25, 2.25, 1, 1, "creative_next", "ui_icon_next.png")..
 
                 default.ui.get_itemslot_bg(0.25, 0.25, 7,4)..
 		"image[7.25,3.25;1,1;creative_trash_icon.png]"..

mods/default/formspec.lua

@@ -66,16 +66,28 @@ end
 -- Buttons
 
 function default.ui.image_button(x, y, w, h, name, image, tooltip)
-   local image = minetest.formspec_escape(image)
+   local ww
-
+   if w == 1 then
-   local tt = ""
+      ww = "1w"
-   if tooltip then
+   elseif w == 2 then
-      tt = "tooltip["..name..";"..minetest.formspec_escape(tooltip).."]"
+      ww = "2w"
+   else
+      ww = "3w"
    end
+   local tooltip = tooltip or ""
+   local img_active = "[combine:16x16:0,0=ui_button_"..ww.."_active.png:0,1="..image
 
-   return "image_button["..x..","..y..";"..w..","..h..";"
+   local form = ""
-      ..image..";"..name..";;;false;"..image.."]"
+   local img_inactive = "ui_button_"..ww.."_inactive.png^" .. image
-      ..tt
+
+   form = form .. "image_button["..x..","..y..";1,1;"
+      ..minetest.formspec_escape(img_inactive)
+      ..";"..name..";;true;false;"
+      ..minetest.formspec_escape(img_active).."]"
+
+   form = form .. "tooltip["..name..";"..minetest.formspec_escape(tooltip).."]"
+
+   return form
 end
 
 function default.ui.button(x, y, w, h, name, label, noclip, tooltip)