0020971: CEA 422 avoiding display of computed meshes

resources/SalomeApp.xml

@@ -67,6 +67,7 @@
     <parameter name="scalar_bar_vertical_y"        value="0.1" />
     <parameter name="DisplayMode"                  value="true" />
     <parameter name="auto_update"                  value="true" />
+    <parameter name="update_limit"                 value="500000" />
     <parameter name="display_mode"                 value="1"    />
     <parameter name="auto_groups"                  value="false"/>
     <parameter name="show_result_notification"     value="2"/>

src/SMESHGUI/SMESHGUI.cxx

@@ -1330,13 +1330,22 @@ LightApp_SelectionMgr* SMESHGUI::selectionMgr()
     return 0;
 }
 
-bool SMESHGUI::automaticUpdate()
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
+bool SMESHGUI::automaticUpdate(unsigned int requestedSize, bool* limitExceeded)
 {
   SUIT_ResourceMgr* resMgr = SUIT_Session::session()->resourceMgr();
   if ( !resMgr )
     return false;
 
-  return resMgr->booleanValue( "SMESH", "auto_update", false );
+  bool autoUpdate  = resMgr->booleanValue( "SMESH", "auto_update",  false );
+  long updateLimit = resMgr->integerValue( "SMESH", "update_limit", 500000 );
+  bool exceeded = updateLimit > 0 && requestedSize > updateLimit;
+  if ( limitExceeded ) *limitExceeded = autoUpdate && exceeded;
+  return autoUpdate && !exceeded;
 }
 
 //=============================================================================
@@ -3821,8 +3830,12 @@ void SMESHGUI::createPreferences()
   // General tab ------------------------------------------------------------------------
   int genTab = addPreference( tr( "PREF_TAB_GENERAL" ) );
 
-  int updateGroup = addPreference( tr( "PREF_GROUP_UPDATE" ), genTab );
+  int autoUpdate = addPreference( tr( "PREF_AUTO_UPDATE" ), genTab, LightApp_Preferences::Auto, "SMESH", "auto_update" );
-  addPreference( tr( "PREF_AUTO_UPDATE" ), updateGroup, LightApp_Preferences::Bool, "SMESH", "auto_update" );
+  int lim = addPreference( tr( "PREF_UPDATE_LIMIT" ), autoUpdate, LightApp_Preferences::IntSpin, "SMESH", "update_limit" );
+  setPreferenceProperty( lim, "min",  0 );
+  setPreferenceProperty( lim, "max",  100000000 );
+  setPreferenceProperty( lim, "step", 1000 );
+  setPreferenceProperty( lim, "special", tr( "PREF_UPDATE_LIMIT_NOLIMIT" ) );
 
   int qaGroup = addPreference( tr( "PREF_GROUP_QUALITY" ), genTab );
   setPreferenceProperty( qaGroup, "columns", 2 );

src/SMESHGUI/SMESHGUI.h

@@ -77,7 +77,7 @@ public :
   
   bool                            isActiveStudyLocked();
 
-  static bool                     automaticUpdate();
+  static bool                     automaticUpdate(unsigned int requestedSize = 0, bool* limitExceeded = 0);
 
   static void                     Modified( bool = true );
 

src/SMESHGUI/SMESHGUI_ComputeDlg.cxx

@@ -734,7 +734,11 @@ void SMESHGUI_BaseComputeOp::computeMesh()
 
       // SHOW MESH
       // NPAL16631: if ( getSMESHGUI()->automaticUpdate() )
-      if ( !memoryLack && getSMESHGUI()->automaticUpdate() )
+      long newSize = myMesh->NbElements();
+      bool limitExceeded;
+      if ( !memoryLack )
+      {
+	if ( getSMESHGUI()->automaticUpdate( newSize, &limitExceeded ) )
 	{
 	  try {
 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
@@ -754,6 +758,13 @@ void SMESHGUI_BaseComputeOp::computeMesh()
 	    }
 	  }
         }
+	else if ( limitExceeded )
+	{
+	  SUIT_MessageBox::warning( desktop(),
+				    tr( "SMESH_WRN_WARNING" ),
+				    tr( "SMESH_WRN_SIZE_LIMIT_EXCEEDED" ) );
+	}
+      }
       LightApp_SelectionMgr *Sel = selectionMgr();
       if ( Sel )
       {
@@ -1562,6 +1573,7 @@ void SMESHGUI_PrecomputeOp::onPreview()
       
     SMESH::MeshPreviewStruct_var previewData =
       gen->Precompute(myMesh, myMainShape, (SMESH::Dimension)dim, aShapesId);
+
     SMESH::MeshPreviewStruct* previewRes = previewData._retn();
     if ( previewRes && previewRes->nodesXYZ.length() > 0 )
     {

src/SMESHGUI/SMESH_msg_en.ts

@@ -2060,6 +2060,11 @@ Consider saving your work before application crash</translation>
         <source>SMESH_WRN_VIEWER_VTK</source>
         <translation>Study frame with VTK Viewer must be activated</translation>
     </message>
+    <message>
+        <source>SMESH_WRN_SIZE_LIMIT_EXCEEDED</source>
+        <translation>Mesh size limit has been exceeded.
+No automatic update of the presentation has been done.</translation>
+    </message>
     <message>
         <source>SMESH_WRN_WARNING</source>
         <translation>Warning</translation>
@@ -3246,6 +3251,14 @@ Please, create VTK viewer and try again</translation>
         <source>PREF_AUTO_UPDATE</source>
         <translation>Automatic update</translation>
     </message>
+    <message>
+        <source>PREF_UPDATE_LIMIT</source>
+        <translation>Size limit (elements)</translation>
+    </message>
+    <message>
+        <source>PREF_UPDATE_LIMIT_NOLIMIT</source>
+        <translation>No limit</translation>
+    </message>
     <message>
         <source>PREF_BACKFACE</source>
         <translation>Back face</translation>
@@ -3346,10 +3359,6 @@ Please, create VTK viewer and try again</translation>
         <source>PREF_GROUP_SELECTION</source>
         <translation>Selection</translation>
     </message>
-    <message>
-        <source>PREF_GROUP_UPDATE</source>
-        <translation>Update</translation>
-    </message>
     <message>
         <source>PREF_HIGHLIGHT_COLOR</source>
         <translation>Highlight color</translation>