guiWindowCtrl parent edge snaping TGEA 1.8.1

bool mEdgeSnap; ///< Should this window snap to other windows edges?

bool mParentSnap; ///< Should this window snap to the parents edges?

mEdgeSnap(true)

mEdgeSnap(true),
                                 mParentSnap(true)

addField("EdgeSnap",          TypeBool,         Offset(mEdgeSnap,GuiWindowCtrl));

addField("ParentSnap",        TypeBool,         Offset(mParentSnap,GuiWindowCtrl));

// Check snapping to other windows
      if( mEdgeSnap )
      {
         RectI bounds = getGlobalBounds();
         bounds.point = mOrigBounds.point + deltaMousePosition;
         EdgeRectI edges = EdgeRectI( bounds, mResizeMargin );

         Vector<EdgeRectI> snapList;
         getSnappableRects( snapList );
         for( S32 i =0; i < snapList.size(); i++ )
         {
            // Compare Edges for hit
            EdgeRectI &snapRect = snapList[i];
            if( edges.left.hit( snapRect.right ) )
               newPosition.x = snapRect.right.position.x;
            else if( edges.right.hit( snapRect.left ) )
               newPosition.x = snapRect.left.position.x - bounds.extent.x;
            if( edges.bottom.hit( snapRect.top ) )
               newPosition.y = snapRect.top.position.y - bounds.extent.y;
            else if( edges.top.hit( snapRect.bottom ) )
               newPosition.y = snapRect.bottom.position.y;
         }
      }

if(mParentSnap || mEdgeSnap)
		{
			RectI bounds = getGlobalBounds();
         bounds.point = mOrigBounds.point + deltaMousePosition;
         EdgeRectI edges = EdgeRectI( bounds, mResizeMargin );

			// Check snapping to other windows
			if( mEdgeSnap )
			{
				Vector<EdgeRectI> snapList;
				getSnappableRects( snapList );
				for( S32 i =0; i < snapList.size(); i++ )
				{
					// Compare Edges for hit
					EdgeRectI &snapRect = snapList[i];
					if( edges.left.hit( snapRect.right ) )
						newPosition.x = snapRect.right.position.x;
					else if( edges.right.hit( snapRect.left ) )
						newPosition.x = snapRect.left.position.x - bounds.extent.x;
					if( edges.bottom.hit( snapRect.top ) )
						newPosition.y = snapRect.top.position.y - bounds.extent.y;
					else if( edges.top.hit( snapRect.bottom ) )
						newPosition.y = snapRect.bottom.position.y;
				}
			}

			//Check snapping to parent walls
			if(mParentSnap)
			{
				//snap to parent walls
				RectI parentRect(Point2I(0,0),parent->getGlobalBounds().extent);
				EdgeRectI snapRect( parentRect,mResizeMargin);
				if( edges.right.hit( snapRect.right ) )
					newPosition.x = snapRect.right.position.x - bounds.extent.x;
				else if( edges.left.hit( snapRect.left ) )
					newPosition.x = snapRect.left.position.x;
				if( edges.top.hit( snapRect.top ) )
					newPosition.y = snapRect.top.position.y;
				else if( edges.bottom.hit( snapRect.bottom ) )
					newPosition.y = snapRect.bottom.position.y - bounds.extent.y;
			}
		}