From: ouv <ouv@opencascade.com>
Date: Mon, 11 Jul 2011 10:24:48 +0000 (+0000)
Subject: Introducing interaction flags (Dragging and WheelScaling)
X-Git-Tag: CTH_V17a~30
X-Git-Url: http://git.salome-platform.org/gitweb/?a=commitdiff_plain;h=3e056684350ab8a60b9c34913698edabf76a0f2e;p=modules%2Fgui.git

Introducing interaction flags (Dragging and WheelScaling)
---

diff --git a/src/GraphicsView/GraphicsView_ViewPort.cxx b/src/GraphicsView/GraphicsView_ViewPort.cxx
index 089b3442d..8d5641b35 100644
--- a/src/GraphicsView/GraphicsView_ViewPort.cxx
+++ b/src/GraphicsView/GraphicsView_ViewPort.cxx
@@ -145,6 +145,9 @@ GraphicsView_ViewPort::GraphicsView_ViewPort( QWidget* theParent )
   myFitAllGap = 40;
   myIsTraceBoundingRectEnabled = true;
 
+  // interaction flags
+  myInteractionFlags = All;
+
   // background
   setBackgroundBrush( QBrush( Qt::white ) );
 
@@ -409,6 +412,33 @@ void GraphicsView_ViewPort::setTraceBoundingRectEnabled( bool theState )
   myIsTraceBoundingRectEnabled = theState;
 }
 
+//================================================================
+// Function : setInteractionFlags
+// Purpose  : 
+//================================================================
+void GraphicsView_ViewPort::setInteractionFlags( const int theFlags )
+{
+  myInteractionFlags |= theFlags;
+}
+
+//================================================================
+// Function : clearInteractionFlags
+// Purpose  : 
+//================================================================
+void GraphicsView_ViewPort::clearInteractionFlags( const int theFlags )
+{
+  myInteractionFlags &= ~theFlags;
+}
+
+//================================================================
+// Function : testInteractionFlags
+// Purpose  : 
+//================================================================
+bool GraphicsView_ViewPort::testInteractionFlags( const int theFlags ) const
+{
+  return ( myInteractionFlags & theFlags ) == theFlags;
+}
+
 //================================================================
 // Function : setViewNameEnabled
 // Purpose  : 
@@ -1338,12 +1368,15 @@ void GraphicsView_ViewPort::onMouseEvent( QGraphicsSceneMouseEvent* e )
   {
     case QEvent::GraphicsSceneMousePress:
     {
-      bool anAccel = e->modifiers() & GraphicsView_ViewTransformer::accelKey();
-      if( ( getHighlightedObject() &&
-            getHighlightedObject()->isMovable() &&
-            !( anAccel || e->button() == Qt::RightButton ) ) ||
-          ( nbSelected() && !anAccel && e->button() == Qt::MidButton ) )
-        myIsDragging = true;
+      if( testInteractionFlags( Dragging ) )
+      {
+        bool anAccel = e->modifiers() & GraphicsView_ViewTransformer::accelKey();
+        if( ( getHighlightedObject() &&
+              getHighlightedObject()->isMovable() &&
+              !( anAccel || e->button() == Qt::RightButton ) ) ||
+            ( nbSelected() && !anAccel && e->button() == Qt::MidButton ) )
+          myIsDragging = true;
+      }
       break;
     }
     case QEvent::GraphicsSceneMouseMove:
diff --git a/src/GraphicsView/GraphicsView_ViewPort.h b/src/GraphicsView/GraphicsView_ViewPort.h
index 227040e30..bad817aec 100644
--- a/src/GraphicsView/GraphicsView_ViewPort.h
+++ b/src/GraphicsView/GraphicsView_ViewPort.h
@@ -46,6 +46,13 @@ class GRAPHICSVIEW_API GraphicsView_ViewPort : public QGraphicsView
 public:
   class NameLabel;
 
+  enum InteractionFlags
+  {
+    Dragging     = 0x0001,
+    WheelScaling = 0x0002,
+    All          = Dragging | WheelScaling
+  };
+
   enum BlockStatus
   {
     BS_NoBlock   = 0x0000,
@@ -84,6 +91,11 @@ public:
   void                             setFitAllGap( double theFitAllGap );
   void                             setTraceBoundingRectEnabled( bool theState );
 
+  // interaction flags
+  void                             setInteractionFlags( const int );
+  void                             clearInteractionFlags( const int );
+  bool                             testInteractionFlags( const int ) const;
+
   // view name
   void                             setViewNamePosition( NamePosition thePosition,
                                                         bool theIsForced = false );
@@ -222,6 +234,9 @@ private:
   bool                             myIsTraceBoundingRectEnabled;
   GraphicsView_ObjectList          myObjects;
 
+  // interaction flags
+  int                              myInteractionFlags;
+
   // view name
   NameLabel*                       myNameLabel;
   NamePosition                     myNamePosition;
diff --git a/src/GraphicsView/GraphicsView_Viewer.cxx b/src/GraphicsView/GraphicsView_Viewer.cxx
index 038fd8816..5526a0f7a 100644
--- a/src/GraphicsView/GraphicsView_Viewer.cxx
+++ b/src/GraphicsView/GraphicsView_Viewer.cxx
@@ -440,18 +440,21 @@ void GraphicsView_Viewer::handleWheel( QGraphicsSceneWheelEvent* e )
 {
   if( GraphicsView_ViewPort* aViewPort = getActiveViewPort() )
   {
-    bool anIsScaleUp = e->delta() > 0;
-    bool anIsCtrl = e->modifiers() & Qt::ControlModifier;
+    if( aViewPort->testInteractionFlags( GraphicsView_ViewPort::WheelScaling ) )
+    {
+      bool anIsScaleUp = e->delta() > 0;
+      bool anIsCtrl = e->modifiers() & Qt::ControlModifier;
 
-    bool anIsScaleChanged = false;
-    for( aViewPort->initSelected(); aViewPort->moreSelected(); aViewPort->nextSelected() )
-      if( GraphicsView_Object* anObject = aViewPort->selectedObject() )
-        anIsScaleChanged = anObject->updateScale( anIsScaleUp, anIsCtrl ) || anIsScaleChanged;
+      bool anIsScaleChanged = false;
+      for( aViewPort->initSelected(); aViewPort->moreSelected(); aViewPort->nextSelected() )
+        if( GraphicsView_Object* anObject = aViewPort->selectedObject() )
+          anIsScaleChanged = anObject->updateScale( anIsScaleUp, anIsCtrl ) || anIsScaleChanged;
 
-    if( anIsScaleChanged )
-    {
-      emit wheelScaleChanged();
-      aViewPort->onBoundingRectChanged();
+      if( anIsScaleChanged )
+      {
+        emit wheelScaleChanged();
+        aViewPort->onBoundingRectChanged();
+      }
     }
   }
 }