complete open/save project including layer names, in layout bring canvas to background and use translucent UI on top, save computation on Android with lazy rendering on events only

data/layout.xml

@@ -328,6 +328,10 @@
   <!--main-->
   <layout id="main">
     <node dir="col" wrap="0" width="100%" height="100%" pad="0">
+      <!-- content panel -->
+      <node positioning="absolute" width="100%" height="100%" grow="1" color=".1" pad="0">
+        <canvas id="paint-canvas" grow="1"/>
+      </node>
       <!-- menu bar -->
       <border flood-events="1" margin="0 0 0 0" pad="0 0 0 0" color=".1" width="100%" height="30" dir="row" align="center">
         <button-custom id="menu-file" height="100%" margin="0 0 0 0" justify="center" align="center" pad="8" color=".1">
@@ -389,10 +393,6 @@
             <!--<panel-color id="panel-color"/>-->
           </border>
         </node>
-        <!-- content panel -->
-        <node grow="1" color=".1" pad="0">
-          <canvas id="paint-canvas" grow="1"/>
-        </node>
       </node>
       <!-- status bar -->
       <!--<border height="30" width="100%" color=".15" border-color=".3" dir="row" pad="0 0 0 10" align="center">
@@ -403,6 +403,6 @@
     </node>
     <!--<ref id="settings"/>-->
     <!--<ref id="popup-menu"/>-->
-    <ref id="popup-dialog-open"/>
+    <!--<ref id="popup-dialog-open"/>-->
 </layout>
 </root>