#refs 327 - Polyline is not shown during creation

[modules/hydro.git] / src / HYDROGUI / HYDROGUI_Operation.cxx

diff --git a/src/HYDROGUI/HYDROGUI_Operation.cxx b/src/HYDROGUI/HYDROGUI_Operation.cxx
index 8b397f151c77e5938f4e07fef8cb5c800ed7e8b0..de64a1878949e6d968c2e113e507a4ecb668d272 100644 (file)
--- a/src/HYDROGUI/HYDROGUI_Operation.cxx
+++ b/src/HYDROGUI/HYDROGUI_Operation.cxx
@@ -26,6 +26,7 @@
 #include "HYDROGUI_Module.h"
 #include "HYDROGUI_Tool.h"
 #include "HYDROGUI_OCCDisplayer.h"
+#include "HYDROGUI_Shape.h"
 
 #include <HYDROData_Document.h>
 #include <HYDROData_Iterator.h>
@@ -91,13 +92,26 @@ HYDROGUI_Module* HYDROGUI_Operation::module() const
 
 /**
   * Returns Z layer of the operation preview.
-  \ returns a layer position
+   \ returns a layer position
  */
 int HYDROGUI_Operation::getPreviewZLayer() const
 {
   return myPreviewZLayer;
 }
 
+/**
+ * Update Z layer for the operation preview.
+   \param theLayer a layer position
+ */
+void HYDROGUI_Operation::updatePreviewZLayer( int theLayer )
+{
+  setPreviewZLayer( theLayer );
+
+  HYDROGUI_Shape* aPreview = getPreviewShape();
+  if ( aPreview )
+    aPreview->setZLayer( getPreviewZLayer() );
+}
+
 /**
  * Set Z layer for the operation preview.
  \param theLayer a layer position
@@ -108,6 +122,14 @@ void HYDROGUI_Operation::setPreviewZLayer( int theLayer )
     myPreviewZLayer = theLayer;
 }
 
+/**
+ * Returns a shape preview of the operation
+ */
+HYDROGUI_Shape* HYDROGUI_Operation::getPreviewShape() const
+{
+  return 0;
+}
+
 /**
  * Return the operation preview manager
  */
@@ -160,26 +182,25 @@ void HYDROGUI_Operation::stopOperation()
 
   // pop the operation from the cached map of active operations
   QStack<HYDROGUI_Operation*>& anOperations = myModule->getActiveOperations();
-  if ( anOperations.top() == this )
-  {
-    anOperations.pop();
-  }
-  else {
-    // find in the stack the current operation and remove it from the stack
-    QVectorIterator<HYDROGUI_Operation*> aVIt( anOperations );
-    aVIt.toBack();
-    aVIt.previous(); // skip the top show/hide operation
-    while ( aVIt.hasPrevious() )
+  if ( !anOperations.empty() ) {
+    if ( anOperations.top() == this )
+      anOperations.pop();
+    else
     {
-      HYDROGUI_Operation* anOp = aVIt.previous();
-      if ( anOp == this )
-        anOperations.remove( anOperations.lastIndexOf( anOp ) );
+      // find in the stack the current operation and remove it from the stack
+      QVectorIterator<HYDROGUI_Operation*> aVIt( anOperations );
+      aVIt.toBack();
+      aVIt.previous(); // skip the top show/hide operation
+      while ( aVIt.hasPrevious() )
+      {
+        HYDROGUI_Operation* anOp = aVIt.previous();
+        if ( anOp == this )
+          anOperations.remove( anOperations.lastIndexOf( anOp ) );
+      }
     }
   }
-
-  // removes the Z layer, created for the operation preview
-  if ( myPreviewManager && getPreviewZLayer() >= 0 )
-    module()->getOCCDisplayer()->RemoveZLayer( myPreviewManager, getPreviewZLayer() );
+  // release the preview manager with removing the added preview Z layer
+  setPreviewManager( 0 );
 }
 
 void HYDROGUI_Operation::setDialogActive( const bool active )