391_scrollData = new ScrollData();

76if (_scrollData != null) 78_scrollData.LineUp(this); 87if (_scrollData != null) 89_scrollData.LineDown(this); 98if (_scrollData != null) 100_scrollData.LineLeft(this); 109if (_scrollData != null) 111_scrollData.LineRight(this); 120if (_scrollData != null) 122_scrollData.PageUp(this); 131if (_scrollData != null) 133_scrollData.PageDown(this); 142if (_scrollData != null) 144_scrollData.PageLeft(this); 153if (_scrollData != null) 155_scrollData.PageRight(this); 164if (_scrollData != null) 166_scrollData.MouseWheelUp(this); 175if (_scrollData != null) 177_scrollData.MouseWheelDown(this); 186if (_scrollData != null) 188_scrollData.MouseWheelLeft(this); 197if (_scrollData != null) 199_scrollData.MouseWheelRight(this); 208if (_scrollData != null) 210_scrollData.SetHorizontalOffset(this, offset); 219if (_scrollData != null) 221_scrollData.SetVerticalOffset(this, offset); 230if (_scrollData == null) 236rectangle = _scrollData.MakeVisible(this, visual, rectangle); 249return (_scrollData != null) ? _scrollData.CanVerticallyScroll : false; 253if (_scrollData != null) 255_scrollData.CanVerticallyScroll = value; 267return (_scrollData != null) ? _scrollData.CanHorizontallyScroll : false; 271if (_scrollData != null) 273_scrollData.CanHorizontallyScroll = value; 287if (_scrollData != null) 289result = _scrollData.ExtentWidth; 314if (_scrollData != null) 316result = _scrollData.ExtentHeight; 339return (_scrollData != null) ? _scrollData.ViewportWidth : 0; 350return (_scrollData != null) ? _scrollData.ViewportHeight : 0; 361return (_scrollData != null) ? _scrollData.HorizontalOffset : 0; 372return (_scrollData != null) ? _scrollData.VerticalOffset : 0; 383return (_scrollData != null) ? _scrollData.ScrollOwner : null; 388if (_scrollData == null) 393_scrollData.SetScrollOwner(this, value); 499if (_scrollData != null) 1771if (_scrollData == null) 1778if (!DoubleUtil.AreClose(_scrollData.Viewport, arrangeSize)) 1780_scrollData.Viewport = arrangeSize; 1784if (!DoubleUtil.AreClose(_scrollData.Extent, _contentSize)) 1786_scrollData.Extent = _contentSize; 1791Math.Max(0, Math.Min(_scrollData.ExtentWidth - _scrollData.ViewportWidth, _scrollData.HorizontalOffset)), 1792Math.Max(0, Math.Min(_scrollData.ExtentHeight - _scrollData.ViewportHeight, _scrollData.VerticalOffset))); 1794if (!DoubleUtil.AreClose(offset, _scrollData.Offset)) 1796_scrollData.Offset = offset; 1800if (invalidateScrollInfo && _scrollData.ScrollOwner != null) 1802_scrollData.ScrollOwner.InvalidateScrollInfo(); 1856if (_scrollData != null) 1858horizontalOffset -= _scrollData.HorizontalOffset; 1859verticalOffset -= _scrollData.VerticalOffset; 2014if (_scrollData != null) 2016point = new Point(point.X + _scrollData.HorizontalOffset, point.Y + _scrollData.VerticalOffset); 2031if (_scrollData != null) 2033rect.X -= _scrollData.HorizontalOffset; 2034rect.Y -= _scrollData.VerticalOffset; 3026return _scrollData == null ? Rect.Empty : 3027new Rect(_scrollData.HorizontalOffset, _scrollData.VerticalOffset, _scrollData.ViewportWidth, _scrollData.ViewportHeight);