From 667bca998aab8af9b8819bf234b921b0c059ac83 Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Thu, 20 Jan 2011 11:33:54 +0000
Subject: [PATCH] 0020997: [CEA 420] Problem with VISU preferences

---
 src/Qtx/QtxPagePrefMgr.cxx | 85 ++++++++++++++++++++++++++++++--------
 src/Qtx/QtxPagePrefMgr.h   |  4 ++
 2 files changed, 72 insertions(+), 17 deletions(-)

diff --git a/src/Qtx/QtxPagePrefMgr.cxx b/src/Qtx/QtxPagePrefMgr.cxx
index 979ee0e64..938271307 100644
--- a/src/Qtx/QtxPagePrefMgr.cxx
+++ b/src/Qtx/QtxPagePrefMgr.cxx
@@ -2053,6 +2053,36 @@ void QtxPagePrefCheckItem::retrieve()
   for string, integer and double values.
 */
 
+static void fixupAndSet( QLineEdit* le, const QString& txt )
+{
+  if ( le ) {
+    QString val = txt;
+    if ( le->validator() ) {
+      const QDoubleValidator* de = dynamic_cast<const QDoubleValidator*>( le->validator() );
+      if ( de ) {
+	int dec = de->decimals();
+	int idx = val.lastIndexOf( QRegExp( QString("[.|%1]").arg( le->locale().decimalPoint () ) ) );
+	if ( idx >= 0 ) {
+	  QString tmp = val.mid( idx+1 );
+	  QString exp;
+	  val = val.left( idx+1 );
+	  idx = tmp.indexOf( QRegExp( QString("[e|E]") ) );
+	  if ( idx >= 0 ) {
+	    exp = tmp.mid( idx );
+	    tmp = tmp.left( idx );
+	  }
+	  tmp.truncate( dec );
+	  val = val + tmp + exp;
+	}
+      }
+      int pos = 0;
+      if ( le->validator()->validate( val, pos ) == QValidator::Invalid )
+	val.clear();
+    }
+    le->setText( val );
+  }
+}
+
 /*!
   \brief Constructor.
 
@@ -2066,7 +2096,8 @@ void QtxPagePrefCheckItem::retrieve()
 QtxPagePrefEditItem::QtxPagePrefEditItem( const QString& title, QtxPreferenceItem* parent,
                                           const QString& sect, const QString& param )
 : QtxPageNamedPrefItem( title, parent, sect, param ),
-  myType( String )
+  myType( String ),
+  myDecimals( 1000 )
 {
   setControl( myEditor = new QLineEdit() );
   updateEditor();
@@ -2088,7 +2119,8 @@ QtxPagePrefEditItem::QtxPagePrefEditItem( const int type, const QString& title,
                                           QtxPreferenceItem* parent, const QString& sect,
                                           const QString& param )
 : QtxPageNamedPrefItem( title, parent, sect, param ),
-  myType( type )
+  myType( type ),
+  myDecimals( 1000 )
 {
   setControl( myEditor = new QLineEdit() );
   updateEditor();
@@ -2125,6 +2157,30 @@ void QtxPagePrefEditItem::setInputType( const int type )
   updateEditor();
 }
 
+/*!
+  \brief Get number of digits after decimal point (for Double input type)
+  \return preference item decimals value
+  \sa setDecimals()
+*/
+int QtxPagePrefEditItem::decimals() const
+{
+  return myDecimals;
+}
+
+/*!
+  \brief Set number of digits after decimal point (for Double input type)
+  \param dec new preference item decimals value
+  \sa decimals()
+*/
+void QtxPagePrefEditItem::setDecimals( const int dec )
+{
+  if ( myDecimals == dec )
+    return;
+  
+  myDecimals = dec;
+  updateEditor();
+}
+
 /*!
   \brief Store preference item to the resource manager.
   \sa retrieve()
@@ -2141,13 +2197,7 @@ void QtxPagePrefEditItem::store()
 void QtxPagePrefEditItem::retrieve()
 {
   QString txt = getString();
-  if ( myEditor->validator() )
-  {
-    int pos = 0;
-    if ( myEditor->validator()->validate( txt, pos ) == QValidator::Invalid )
-      txt.clear();
-  }
-  myEditor->setText( txt );
+  fixupAndSet( myEditor, txt );
 }
 
 /*!
@@ -2160,6 +2210,8 @@ QVariant QtxPagePrefEditItem::optionValue( const QString& name ) const
 {
   if ( name == "input_type" || name == "type" )
     return inputType();
+  else if ( name == "precision" || name == "prec" || name == "decimals" )
+    return decimals();
   else
     return QtxPageNamedPrefItem::optionValue( name );
 }
@@ -2177,6 +2229,10 @@ void QtxPagePrefEditItem::setOptionValue( const QString& name, const QVariant& v
     if ( val.canConvert( QVariant::Int ) )
       setInputType( val.toInt() );
   }
+  else if ( name == "precision" || name == "prec" || name == "decimals" ) {
+    if ( val.canConvert( QVariant::Int ) )
+      setDecimals( val.toInt() );
+  }
   else
     QtxPageNamedPrefItem::setOptionValue( name, val );
 }
@@ -2194,21 +2250,16 @@ void QtxPagePrefEditItem::updateEditor()
     break;
   case Double:
     val = new QDoubleValidator( myEditor );
+    dynamic_cast<QDoubleValidator*>( val )->setDecimals( myDecimals < 0 ? 1000 : myDecimals );
     break;
   default:
     break;
   }
 
-  if ( !myEditor->text().isEmpty() && val )
-  {
-    int pos = 0;
-    QString str = myEditor->text();
-    if ( val->validate( str, pos ) == QValidator::Invalid )
-      myEditor->clear();
-  }
-
+  QString txt = myEditor->text();
   delete myEditor->validator();
   myEditor->setValidator( val );
+  fixupAndSet( myEditor, txt );
 }
 
 /*!
diff --git a/src/Qtx/QtxPagePrefMgr.h b/src/Qtx/QtxPagePrefMgr.h
index 5b7ee10eb..592e8da35 100644
--- a/src/Qtx/QtxPagePrefMgr.h
+++ b/src/Qtx/QtxPagePrefMgr.h
@@ -405,6 +405,9 @@ public:
   int              inputType() const;
   void             setInputType( const int );
 
+  int              decimals() const;
+  void             setDecimals( const int );
+
   virtual void     store();
   virtual void     retrieve();
 
@@ -417,6 +420,7 @@ private:
 
 private:
   int              myType;
+  int              myDecimals;
   QLineEdit*       myEditor;
 };
 
-- 
2.39.2