From c342980135a177596ee63801f8fbf7f51018fb4b Mon Sep 17 00:00:00 2001
From: ouv <ouv@opencascade.com>
Date: Mon, 21 Feb 2011 13:03:45 +0000
Subject: [PATCH] Modification of setting scene rectangle and fit all
 functionality

---
 src/GraphicsView/GraphicsView_ViewPort.cxx | 37 ++++++++++++++++++----
 src/GraphicsView/GraphicsView_ViewPort.h   |  8 ++++-
 2 files changed, 38 insertions(+), 7 deletions(-)

diff --git a/src/GraphicsView/GraphicsView_ViewPort.cxx b/src/GraphicsView/GraphicsView_ViewPort.cxx
index 7a556ca4c..158c436c4 100644
--- a/src/GraphicsView/GraphicsView_ViewPort.cxx
+++ b/src/GraphicsView/GraphicsView_ViewPort.cxx
@@ -40,8 +40,6 @@
 
 #include <math.h>
 
-#define VIEW_GAP 20
-
 int GraphicsView_ViewPort::nCounter = 0;
 QCursor* GraphicsView_ViewPort::defCursor = 0;
 QCursor* GraphicsView_ViewPort::handCursor = 0;
@@ -140,6 +138,9 @@ GraphicsView_ViewPort::GraphicsView_ViewPort( QWidget* theParent )
   myScene = new GraphicsView_Scene( this );
   setScene( myScene );
 
+  mySceneGap = 20;
+  myFitAllGap = 40;
+
   // background
   setBackgroundBrush( QBrush( Qt::white ) );
 
@@ -256,7 +257,7 @@ GraphicsView_ObjectList GraphicsView_ViewPort::getObjects() const
 // Function : objectsBoundingRect
 // Purpose  : 
 //================================================================
-QRectF GraphicsView_ViewPort::objectsBoundingRect() const
+QRectF GraphicsView_ViewPort::objectsBoundingRect( bool theOnlyVisible ) const
 {
   QRectF aRect;
   QListIterator<QGraphicsItem*> anIter( items() );
@@ -264,6 +265,9 @@ QRectF GraphicsView_ViewPort::objectsBoundingRect() const
   {
     if( GraphicsView_Object* anObject = dynamic_cast<GraphicsView_Object*>( anIter.next() ) )
     {
+      if( theOnlyVisible && !anObject->isVisible() )
+        continue;
+
       QRectF anObjectRect = anObject->getRect();
       if( !anObjectRect.isNull() )
       {
@@ -317,6 +321,25 @@ QImage GraphicsView_ViewPort::dumpView( bool theWholeScene )
   return anImage;
 }
 
+//================================================================
+// Function : setSceneGap
+// Purpose  : 
+//================================================================
+void GraphicsView_ViewPort::setSceneGap( double theSceneGap )
+{
+  mySceneGap = theSceneGap;
+  onBoundingRectChanged();
+}
+
+//================================================================
+// Function : setFitAllGap
+// Purpose  : 
+//================================================================
+void GraphicsView_ViewPort::setFitAllGap( double theFitAllGap )
+{
+  myFitAllGap = theFitAllGap;
+}
+
 //================================================================
 // Function : setViewNameEnabled
 // Purpose  : 
@@ -450,7 +473,7 @@ void GraphicsView_ViewPort::updateForeground()
 
     myForegroundItem->setVisible( true );
 
-    myScene->setSceneRect( aRect.adjusted( -VIEW_GAP, -VIEW_GAP, VIEW_GAP, VIEW_GAP ) );
+    myScene->setSceneRect( aRect.adjusted( -mySceneGap, -mySceneGap, mySceneGap, mySceneGap ) );
   }
   else
   {
@@ -582,7 +605,9 @@ void GraphicsView_ViewPort::fitAll( bool theKeepScale )
   if( theKeepScale )
     myCurrentTransform = transform();
 
-  fitInView( myScene->sceneRect(), Qt::KeepAspectRatio );
+  double aGap = myFitAllGap;
+  QRectF aRect = objectsBoundingRect( true );
+  fitInView( aRect.adjusted( -aGap, -aGap, aGap, aGap ), Qt::KeepAspectRatio );
 
   myIsTransforming = false;
 }
@@ -1106,7 +1131,7 @@ void GraphicsView_ViewPort::finishPulling()
 void GraphicsView_ViewPort::onBoundingRectChanged()
 {
   QRectF aRect = objectsBoundingRect();
-  myScene->setSceneRect( aRect.adjusted( -VIEW_GAP, -VIEW_GAP, VIEW_GAP, VIEW_GAP ) );
+  myScene->setSceneRect( aRect.adjusted( -mySceneGap, -mySceneGap, mySceneGap, mySceneGap ) );
 }
 
 //================================================================
diff --git a/src/GraphicsView/GraphicsView_ViewPort.h b/src/GraphicsView/GraphicsView_ViewPort.h
index cd40efe77..63da84203 100644
--- a/src/GraphicsView/GraphicsView_ViewPort.h
+++ b/src/GraphicsView/GraphicsView_ViewPort.h
@@ -63,11 +63,15 @@ public:
 
   GraphicsView_ObjectList          getObjects() const;
 
-  QRectF                           objectsBoundingRect() const;
+  QRectF                           objectsBoundingRect( bool theOnlyVisible = false ) const;
 
   QImage                           dumpView( bool theWholeScene = false );
 
 public:
+  // scene
+  void                             setSceneGap( double theSceneGap );
+  void                             setFitAllGap( double theFitAllGap );
+
   // view name
   void                             setViewNameEnabled( bool theState, bool theIsForced = false );
   void                             setViewName( const QString& theName );
@@ -188,6 +192,8 @@ private:
 private:
   // scene
   GraphicsView_Scene*              myScene;
+  double                           mySceneGap;
+  double                           myFitAllGap;
 
   // view name
   NameLabel*                       myNameLabel;
-- 
2.39.2