X-Git-Url: http://review.tizen.org/git/?p=platform%2Fcore%2Fuifw%2Fdali-toolkit.git;a=blobdiff_plain;f=dali-toolkit%2Finternal%2Fcontrols%2Fscrollable%2Fitem-view%2Fitem-view-impl.cpp;h=8b84088a696b3dff6ed2c5af03f7a3c580f3863f;hp=1724f8330c03cb2a3ea16dc9954823a507bf52f0;hb=2059450020d10987f079a7a14062a86045337e8a;hpb=e21509125c3737c81c73cec9950ffa346af8beec;ds=sidebyside

diff --git a/dali-toolkit/internal/controls/scrollable/item-view/item-view-impl.cpp b/dali-toolkit/internal/controls/scrollable/item-view/item-view-impl.cpp
index 1724f83..8b84088 100755
--- a/dali-toolkit/internal/controls/scrollable/item-view/item-view-impl.cpp
+++ b/dali-toolkit/internal/controls/scrollable/item-view/item-view-impl.cpp
@@ -69,6 +69,8 @@ const float OVERSHOOT_BOUNCE_ACTOR_RESIZE_THRESHOLD = 180.0f;
 const Vector4 OVERSHOOT_OVERLAY_NINE_PATCH_BORDER(0.0f, 0.0f, 1.0f, 12.0f);
 const float DEFAULT_KEYBOARD_FOCUS_SCROLL_DURATION = 0.2f;
 
+const unsigned int OVERSHOOT_SIZE_CONSTRAINT_TAG(42);
+
 /**
  * Local helper to convert pan distance (in actor coordinates) to the layout-specific scrolling direction
  */
@@ -291,6 +293,21 @@ bool FindById( const ItemContainer& items, ItemId id )
   return false;
 }
 
+/**
+  * Helper to apply size constraint to mOvershootOverlay
+  * @param[in] overshootOverlay The overshootOverlay actor
+  * @param[in] The required height
+  */
+void ApplyOvershootSizeConstraint( Actor overshootOverlay, float height )
+{
+  Constraint constraint = Constraint::New<Vector3>( overshootOverlay, Actor::Property::SIZE, OvershootOverlaySizeConstraint( height ) );
+  constraint.AddSource( ParentSource( Dali::Toolkit::ItemView::Property::SCROLL_DIRECTION ) );
+  constraint.AddSource( ParentSource( Dali::Toolkit::ItemView::Property::LAYOUT_ORIENTATION ) );
+  constraint.AddSource( ParentSource( Dali::Actor::Property::SIZE ) );
+  constraint.SetTag( OVERSHOOT_SIZE_CONSTRAINT_TAG );
+  constraint.Apply();
+}
+
 } // unnamed namespace
 
 Dali::Toolkit::ItemView ItemView::New(ItemFactory& factory)
@@ -1519,6 +1536,18 @@ void ItemView::ScrollTo(const Vector2& position, float duration)
   mRefreshEnabled = true;
 }
 
+void ItemView::SetOvershootSize( const Vector2& size )
+{
+  mOvershootSize = size;
+
+  if( mOvershootOverlay )
+  {
+    // Remove old & add new size constraint
+    mOvershootOverlay.RemoveConstraints( OVERSHOOT_SIZE_CONSTRAINT_TAG );
+    ApplyOvershootSizeConstraint( mOvershootOverlay, mOvershootSize.height );
+  }
+}
+
 void ItemView::SetOvershootEffectColor( const Vector4& color )
 {
   mOvershootEffectColor = color;
@@ -1543,15 +1572,9 @@ void ItemView::EnableScrollOvershoot( bool enable )
       mOvershootOverlay.SetDrawMode( DrawMode::OVERLAY_2D );
       self.Add(mOvershootOverlay);
 
-      Constraint constraint = Constraint::New<Vector3>( mOvershootOverlay, Actor::Property::SIZE, OvershootOverlaySizeConstraint(mOvershootSize.height) );
-      constraint.AddSource( ParentSource( Toolkit::ItemView::Property::SCROLL_DIRECTION ) );
-      constraint.AddSource( ParentSource( Toolkit::ItemView::Property::LAYOUT_ORIENTATION ) );
-      constraint.AddSource( ParentSource( Actor::Property::SIZE ) );
-      constraint.Apply();
-
-      mOvershootOverlay.SetSize(mOvershootSize.width, mOvershootSize.height);
+      ApplyOvershootSizeConstraint( mOvershootOverlay, mOvershootSize.height );
 
-      constraint = Constraint::New<Quaternion>( mOvershootOverlay, Actor::Property::ORIENTATION, OvershootOverlayRotationConstraint );
+      Constraint constraint = Constraint::New<Quaternion>( mOvershootOverlay, Actor::Property::ORIENTATION, OvershootOverlayRotationConstraint );
       constraint.AddSource( ParentSource( Toolkit::ItemView::Property::SCROLL_DIRECTION ) );
       constraint.AddSource( ParentSource( Toolkit::ItemView::Property::LAYOUT_ORIENTATION ) );
       constraint.AddSource( ParentSource( Toolkit::ItemView::Property::OVERSHOOT ) );