From c2fe3ad9c10500506f5b708a2be5e6e4e6011699 Mon Sep 17 00:00:00 2001
From: mkr <mkr@opencascade.com>
Date: Thu, 6 Nov 2008 14:07:22 +0000
Subject: [PATCH] Fix for IPAL17690 : Plot 2D grid/axial marks.

---
 src/Plot2d/Plot2d_ViewFrame.cxx | 52 ++++++++++++++++++++++++++++-----
 src/Plot2d/Plot2d_ViewFrame.h   | 10 ++++++-
 2 files changed, 53 insertions(+), 9 deletions(-)

diff --git a/src/Plot2d/Plot2d_ViewFrame.cxx b/src/Plot2d/Plot2d_ViewFrame.cxx
index afa7baa03..325435af3 100755
--- a/src/Plot2d/Plot2d_ViewFrame.cxx
+++ b/src/Plot2d/Plot2d_ViewFrame.cxx
@@ -151,7 +151,7 @@ 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 ), myIsRescaled( false )
 {
   /* Plot 2d View */
   QVBoxLayout* aLayout = new QVBoxLayout( this ); 
@@ -170,6 +170,8 @@ Plot2d_ViewFrame::Plot2d_ViewFrame( QWidget* parent, const QString& title )
      this,   SLOT( plotMouseReleased( const QMouseEvent& ) ) );
   connect( myPlot, SIGNAL( legendClicked( long ) ),
      this, SIGNAL( legendClicked( long ) ) );
+  connect( myPlot, SIGNAL( rescale() ),
+     this, SLOT( rescale() ) );
 
   /* Initial Setup - get from the preferences */
   readPreferences();
@@ -801,26 +803,26 @@ void Plot2d_ViewFrame::fitAll()
 
   myPlot->setAxisAutoScale( QwtPlot::yLeft );
   myPlot->setAxisAutoScale( QwtPlot::xBottom );
-  myPlot->replot();
+  //myPlot->replot();
 
   // for existing grid
   QwtDiMap xMap = myPlot->canvasMap( QwtPlot::xBottom );
   QwtDiMap yMap = myPlot->canvasMap( QwtPlot::yLeft );
 
   myPlot->setAxisScale( QwtPlot::xBottom, 
-      myPlot->invTransform( QwtPlot::xBottom, xMap.i1() ), 
-      myPlot->invTransform( QwtPlot::xBottom, xMap.i2() ) );
+      QString::number(myPlot->invTransform( QwtPlot::xBottom, xMap.i1() )).toDouble(), 
+      QString::number(myPlot->invTransform( QwtPlot::xBottom, xMap.i2() )).toDouble() );
   myPlot->setAxisScale( QwtPlot::yLeft, 
-      myPlot->invTransform( QwtPlot::yLeft, yMap.i1() ), 
-      myPlot->invTransform( QwtPlot::yLeft, yMap.i2() ) );
+      QString::number(myPlot->invTransform( QwtPlot::yLeft, yMap.i1() )).toDouble(), 
+      QString::number(myPlot->invTransform( QwtPlot::yLeft, yMap.i2() )).toDouble() );
 
   if (mySecondY) {
     myPlot->setAxisAutoScale( QwtPlot::yRight );
     myPlot->replot();
     QwtDiMap yMap2 = myPlot->canvasMap( QwtPlot::yRight );
     myPlot->setAxisScale( QwtPlot::yRight, 
-        myPlot->invTransform( QwtPlot::yRight, yMap2.i1() ), 
-        myPlot->invTransform( QwtPlot::yRight, yMap2.i2() ) );
+	QString::number(myPlot->invTransform( QwtPlot::yRight, yMap2.i1() )).toDouble(), 
+        QString::number(myPlot->invTransform( QwtPlot::yRight, yMap2.i2() )).toDouble() );
   }
   myPlot->replot();
 }
@@ -1478,6 +1480,28 @@ void Plot2d_ViewFrame::plotMouseReleased( const QMouseEvent& me )
      aParent->putInfo(tr("INF_READY"));
   myOperation = NoOpId;
 }
+
+/*!
+  Slot, rescales axis on the first show of view frame in order to take into account the correct canvas map
+*/
+void Plot2d_ViewFrame::rescale()
+{
+  if ( myPlot && !myIsRescaled ) {
+    myIsRescaled = true;
+
+    QwtDiMap map;
+    int axis[3] = { QwtPlot::xBottom, QwtPlot::yLeft, QwtPlot::yRight };
+    double dMin, dMax;
+    for ( int i = 0; i < 3; i++ )
+      if ( i < 2 || i == 2 && mySecondY ) {
+	map = myPlot->canvasMap(axis[i]);
+	dMin = myPlot->invTransform(axis[i], map.i1()); dMax = myPlot->invTransform(axis[i], map.i2());
+	myPlot->setAxisScale( axis[i], QString::number(dMin).toDouble(), QString::number(dMax).toDouble() ); 
+      }
+    myPlot->replot();
+  }
+}
+
 /*!
   Slot, called when user wheeling mouse
 */
@@ -1780,6 +1804,18 @@ bool Plot2d_Plot2d::existMarker( const QwtSymbol::Style typeMarker, const QColor
   return false;
 }
 
+/*!
+  Emits rescale() signal on the first drawing of the QwtPlotCanvas.
+*/
+void Plot2d_Plot2d::drawCanvas(QPainter *painter)
+{
+  if ( Plot2d_ViewFrame* aVF = dynamic_cast<Plot2d_ViewFrame*>(parentWidget()) )
+    if ( !aVF->isRescaled() )
+      emit rescale();
+  
+  QwtPlot::drawCanvas(painter);
+}
+
 /*!
   Sets the flag saying that QwtPlot geometry has been fully defined.
 */
diff --git a/src/Plot2d/Plot2d_ViewFrame.h b/src/Plot2d/Plot2d_ViewFrame.h
index 1ca3f197f..558790db7 100755
--- a/src/Plot2d/Plot2d_ViewFrame.h
+++ b/src/Plot2d/Plot2d_ViewFrame.h
@@ -125,6 +125,8 @@ public:
   void    incrementalPan ( const int incrX, const int incrY );
   void    incrementalZoom( const int incrX, const int incrY );
 
+  bool    isRescaled() const { return myIsRescaled; }
+
 protected:
   int     testOperation( const QMouseEvent& );
   void    readPreferences();
@@ -156,6 +158,7 @@ protected slots:
   void    plotMousePressed( const QMouseEvent& );
   void    plotMouseMoved( const QMouseEvent& );
   void    plotMouseReleased( const QMouseEvent& );
+  void    rescale();
 
 signals:
   void    vpModeHorChanged();
@@ -184,6 +187,7 @@ protected:
   int            myXMode, myYMode;
   double         myXDistance, myYDistance, myYDistance2;
   bool           mySecondY;
+  bool           myIsRescaled;
 };
 
 class Plot2d_Plot2d : public QwtPlot 
@@ -210,8 +214,12 @@ public:
 public slots:
   virtual void polish();
 
+signals:
+  void rescale();
+
 protected:
-  bool       existMarker( const QwtSymbol::Style typeMarker, const QColor& color, const Qt::PenStyle typeLine );
+  bool         existMarker( const QwtSymbol::Style typeMarker, const QColor& color, const Qt::PenStyle typeLine );
+  virtual void drawCanvas(QPainter *);
 
 protected:
   QValueList<QColor> myColors;
-- 
2.39.2