Fix to spin box button fit and npc trade:

* Fit spin box buttons properly
* NPC trade you can now look at items you can sell/buy
(Waiting for ed to implement a way to set item image color before its completed)

data/styles/20-spinboxes.otui

@@ -1,6 +1,7 @@
 SpinBox < TextEdit
   __class: UISpinBox
   size: 86 20
+  padding: 0
 
   Button
     id: up

modules/game_npctrade/npctrade.lua

@@ -33,6 +33,8 @@ tradeItems = {}
 playerItems = nil
 selectedItem = nil
 
+mouseWidget = nil
+
 function init()
   npcWindow = g_ui.displayUI('npctrade')
   npcWindow:setVisible(false)
@@ -63,6 +65,11 @@ function init()
   radioTabs:selectWidget(buyTab)
   radioTabs.onSelectionChange = onTradeTypeChange
 
+  mouseWidget = g_ui.createWidget('UIButton')
+  mouseWidget:setVisible(false)
+  mouseWidget:setFocusable(false)
+  mouseWidget.cancelNextRelease = false
+
   if g_game.isOnline() then
     playerFreeCapacity = g_game.getLocalPlayer():getFreeCapacity()
   end
@@ -150,11 +157,21 @@ function onSearchTextChange()
 end
 
 function itemPopup(self, mousePosition, mouseButton)
+  if mouseWidget.cancelNextRelease then
+    mouseWidget.cancelNextRelease = false
+    return false
+  end
+
   if mouseButton == MouseRightButton then
     local menu = g_ui.createWidget('PopupMenu')
     menu:addOption(tr('Look'), function() return g_game.inspectNpcTrade(self:getItem()) end)
     menu:display(mousePosition)
     return true
+  elseif ((g_mouse.isPressed(MouseLeftButton) and mouseButton == MouseRightButton) 
+    or (g_mouse.isPressed(MouseRightButton) and mouseButton == MouseLeftButton)) then
+    mouseWidget.cancelNextRelease = true
+    g_game.inspectNpcTrade(self:getItem())
+    return true
   end
   return false
 end
@@ -339,7 +356,7 @@ function refreshPlayerGoods()
     local item = itemWidget.item
 
     local canTrade = canTradeItem(item)
-    itemWidget:setEnabled(canTrade)
+    itemWidget:setOn(canTrade)
 
     local searchCondition = (searchFilter == '') or (searchFilter ~= '' and string.find(item.name:lower(), searchFilter) ~= nil)
     local showAllItemsCondition = (currentTradeType == BUY) or (showAllItems:isChecked()) or (currentTradeType == SELL and not showAllItems:isChecked() and canTrade)
@@ -426,4 +443,3 @@ function onInventoryChange(inventory, item, oldItem)
     refreshItem(selectedItem)
   end
 end
-

modules/game_npctrade/npctrade.otui

@@ -17,15 +17,16 @@ NPCItemBox < UICheckBox
     phantom: true
     anchors.top: parent.top
     anchors.horizontalCenter: parent.horizontalCenter
+    image-color: #ffffffff
     margin-top: 5
 
-  $checked:
+  $checked on:
     border-color: #ffffff
 
-  $hover !checked:
-    border-color: #aaaaaa
+  $!checked:
+    border-color: #000000
 
-  $disabled:
+  $!on:
     image-color: #ffffff88
     color: #aaaaaa88