Added loading layer visibility settings when loading a board. Minor code cleaning.

pcbnew/basepcbframe.cpp

@@ -226,6 +226,17 @@ void PCB_BASE_FRAME::SetBoard( BOARD* aBoard )
         {
             view->SetLayerOrder( m_galLayerOrder[i], i );
         }
+
+        // Load layer & elements visibility settings
+        for( unsigned int i = 0; i < LAYER_COUNT; ++i )
+        {
+            view->SetLayerVisible( i, m_Pcb->IsLayerVisible( i ) );
+        }
+
+        for( unsigned int i = 0; i < END_PCB_VISIBLE_LIST; ++i )
+        {
+            view->SetLayerVisible( ITEM_GAL_LAYER( i ), m_Pcb->IsElementVisible( i ) );
+        }
     }
 #endif
 }

pcbnew/class_pcb_layer_widget.cpp

@@ -368,16 +368,18 @@ void PCB_LAYER_WIDGET::OnLayerVisible( int aLayer, bool isVisible, bool isFinal
     {
         KiGfx::VIEW* view = galCanvas->GetView();
         view->SetLayerVisible( aLayer, isVisible );
-
-        if( myframe->IsGalCanvasActive() )
-        {
-            galCanvas->Refresh();
-        }
     }
 #endif /* KICAD_GAL */
 
     if( isFinal )
+    {
+#ifdef KICAD_GAL
+        if( myframe->IsGalCanvasActive() )
+            galCanvas->Refresh();
+        else
+#endif /* KICAD_GAL */
             myframe->GetCanvas()->Refresh();
+    }
 }
 
 void PCB_LAYER_WIDGET::OnRenderColorChange( int aId, EDA_COLOR_T aColor )
@@ -418,14 +420,12 @@ void PCB_LAYER_WIDGET::OnRenderEnable( int aId, bool isEnabled )
     {
         KiGfx::VIEW* view = galCanvas->GetView();
         view->SetLayerVisible( ITEM_GAL_LAYER( aId ), isEnabled );
+    }
 
     if( myframe->IsGalCanvasActive() )
-        {
         galCanvas->Refresh();
-        }
-    }
+    else
 #endif /* KICAD_GAL */
-
         myframe->GetCanvas()->Refresh();
 }