From bf76f6e9b56f3bb123883c768ddfcdcc91b48b49 Mon Sep 17 00:00:00 2001
From: Marco Callieri mcallieri <marco.callieri@isti.cnr.it>
Date: Thu, 10 Feb 2011 16:45:30 +0000
Subject: [PATCH] added ALT modifier when clicking on mesh in layer window to
 set ALL layers visible

---
 src/meshlab/layerDialog.cpp | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/meshlab/layerDialog.cpp b/src/meshlab/layerDialog.cpp
index 247e63369..6b9aff0ef 100644
--- a/src/meshlab/layerDialog.cpp
+++ b/src/meshlab/layerDialog.cpp
@@ -93,10 +93,10 @@ void LayerDialog::meshItemClicked (QTreeWidgetItem * item , int col)
       {
         //the user has clicked on one of the eyes
         MeshDocument  *md= mw->meshDoc();
+
         // NICE TRICK.
         // If the user has pressed ctrl when clicking on the eye icon, only that layer will remain visible
         // Very useful for comparing meshes
-
         if(QApplication::keyboardModifiers() == Qt::ControlModifier)
         {
           foreach(MeshModel *mp, md->meshList)
@@ -104,8 +104,21 @@ void LayerDialog::meshItemClicked (QTreeWidgetItem * item , int col)
               mw->GLA()->meshSetVisibility(mp, false);
             }
         }
+
         //Toggle visibility of current mesh
         mw->GLA()->meshSetVisibility(md->getMesh(clickedId), !md->getMesh(clickedId)->visible);
+
+        // EVEN NICER TRICK.
+        // If the user has pressed alt when clicking on the eye icon, all layers will get visible
+        // Very useful after you turned all layer invis using the previous option and want to avoid
+        // clicking on all of them...
+        if(QApplication::keyboardModifiers() == Qt::AltModifier)
+        {
+          foreach(MeshModel *mp, md->meshList)
+            {
+              mw->GLA()->meshSetVisibility(mp, true);
+            }
+        }
       } break;
     case 1 :