From 04766313536b0be8318c2d4f12808ef55f80d908 Mon Sep 17 00:00:00 2001
From: afv <artem.fedorov@opencascade.com>
Date: Thu, 2 Jul 2015 12:43:15 +0400
Subject: [PATCH] 0002786: External 20761 Zoom lost

---
 src/Plot2d/Plot2d_ViewFrame.cxx | 23 +++++++++++++++++++++--
 src/Plot2d/Plot2d_ViewFrame.h   |  4 ++++
 2 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/src/Plot2d/Plot2d_ViewFrame.cxx b/src/Plot2d/Plot2d_ViewFrame.cxx
index acaae9bd8..b591d7274 100755
--- a/src/Plot2d/Plot2d_ViewFrame.cxx
+++ b/src/Plot2d/Plot2d_ViewFrame.cxx
@@ -179,7 +179,7 @@ Plot2d_ViewFrame::Plot2d_ViewFrame( QWidget* parent, const QString& title )
        myXGridMinorEnabled( false ), myYGridMinorEnabled( false ), myY2GridMinorEnabled( false ),
        myXGridMaxMajor( 8 ), myYGridMaxMajor( 8 ), myY2GridMaxMajor( 8 ),
        myXGridMaxMinor( 5 ), myYGridMaxMinor( 5 ), myY2GridMaxMinor( 5 ),
-       myXMode( 0 ), myYMode( 0 ), mySecondY( false ),
+       myXMode( 0 ), myYMode( 0 ), mySecondY( false ), myKeepCurrentRange( false ),
        myTitleAutoUpdate( true ), myXTitleAutoUpdate( true ), myYTitleAutoUpdate( true ),
        myTitleChangedByUser( false ), myXTitleChangedByUser( false ), myYTitleChangedByUser( false ),
        myY2TitleChangedByUser( false ), myIsTimeColorization( false ), myTimePosition( -1 ), myInactiveColor( Qt::gray )
@@ -311,6 +311,22 @@ bool Plot2d_ViewFrame::getSecondY()
   return mySecondY;
 }
 
+/*!
+  Set flag which indicate keep current range or not
+*/
+void Plot2d_ViewFrame::setKeepCurrentRange( const bool& theKeepCurrentRange )
+{
+  myKeepCurrentRange = theKeepCurrentRange;
+}
+
+/*!
+  Get flag which indicate keep current range or not
+*/
+bool Plot2d_ViewFrame::getKeepCurrentRange()
+{
+  return myKeepCurrentRange;
+}
+
 /*!
   Erase presentation
 */
@@ -680,7 +696,10 @@ void Plot2d_ViewFrame::displayCurves( const curveList& curves, bool update )
     aCurve = *it;
     displayCurve( aCurve, false );
   }
-  fitAll();
+
+  if ( !myKeepCurrentRange )
+    fitAll();
+
   //myPlot->setUpdatesEnabled( true );
 // update legend
   if ( update )
diff --git a/src/Plot2d/Plot2d_ViewFrame.h b/src/Plot2d/Plot2d_ViewFrame.h
index 4262a6dc6..e30ea6139 100755
--- a/src/Plot2d/Plot2d_ViewFrame.h
+++ b/src/Plot2d/Plot2d_ViewFrame.h
@@ -118,6 +118,9 @@ public:
   void    setSecondY( const bool& theSecondY );
   bool    getSecondY();
 
+  bool    getKeepCurrentRange();
+  void    setKeepCurrentRange( const bool& theKeepCurrentRange );
+
   bool    isTitleChangedByUser( const ObjectType type );
   void    forgetLocalUserChanges( const ObjectType type );
 
@@ -221,6 +224,7 @@ protected:
   int            myXMode, myYMode;
   double         myXDistance, myYDistance, myYDistance2;
   bool           mySecondY;
+  bool           myKeepCurrentRange;
   
   bool           myTitleAutoUpdate, myXTitleAutoUpdate, myYTitleAutoUpdate;
   bool           myTitleChangedByUser, myXTitleChangedByUser, myYTitleChangedByUser,
-- 
2.39.2