395_scrollData = new ScrollData();

80if (_scrollData != null) 82_scrollData.LineUp(this); 91if (_scrollData != null) 93_scrollData.LineDown(this); 102if (_scrollData != null) 104_scrollData.LineLeft(this); 113if (_scrollData != null) 115_scrollData.LineRight(this); 124if (_scrollData != null) 126_scrollData.PageUp(this); 135if (_scrollData != null) 137_scrollData.PageDown(this); 146if (_scrollData != null) 148_scrollData.PageLeft(this); 157if (_scrollData != null) 159_scrollData.PageRight(this); 168if (_scrollData != null) 170_scrollData.MouseWheelUp(this); 179if (_scrollData != null) 181_scrollData.MouseWheelDown(this); 190if (_scrollData != null) 192_scrollData.MouseWheelLeft(this); 201if (_scrollData != null) 203_scrollData.MouseWheelRight(this); 212if (_scrollData != null) 214_scrollData.SetHorizontalOffset(this, offset); 223if (_scrollData != null) 225_scrollData.SetVerticalOffset(this, offset); 234if (_scrollData == null) 240rectangle = _scrollData.MakeVisible(this, visual, rectangle); 253return (_scrollData != null) ? _scrollData.CanVerticallyScroll : false; 257if (_scrollData != null) 259_scrollData.CanVerticallyScroll = value; 271return (_scrollData != null) ? _scrollData.CanHorizontallyScroll : false; 275if (_scrollData != null) 277_scrollData.CanHorizontallyScroll = value; 291if(_scrollData != null) 293result = _scrollData.ExtentWidth; 318if(_scrollData != null) 320result = _scrollData.ExtentHeight; 343return (_scrollData != null) ? _scrollData.ViewportWidth : 0; 354return (_scrollData != null) ? _scrollData.ViewportHeight : 0; 365return (_scrollData != null) ? _scrollData.HorizontalOffset : 0; 376return (_scrollData != null) ? _scrollData.VerticalOffset : 0; 387return (_scrollData != null) ? _scrollData.ScrollOwner : null; 392if (_scrollData == null) 397_scrollData.SetScrollOwner(this, value); 502if (_scrollData != null) 1769if (_scrollData == null) 1776if (!DoubleUtil.AreClose(_scrollData.Viewport, arrangeSize)) 1778_scrollData.Viewport = arrangeSize; 1782if (!DoubleUtil.AreClose(_scrollData.Extent, _contentSize)) 1784_scrollData.Extent = _contentSize; 1789Math.Max(0, Math.Min(_scrollData.ExtentWidth - _scrollData.ViewportWidth, _scrollData.HorizontalOffset)), 1790Math.Max(0, Math.Min(_scrollData.ExtentHeight - _scrollData.ViewportHeight, _scrollData.VerticalOffset))); 1792if (!DoubleUtil.AreClose(offset, _scrollData.Offset)) 1794_scrollData.Offset = offset; 1798if (invalidateScrollInfo && _scrollData.ScrollOwner != null) 1800_scrollData.ScrollOwner.InvalidateScrollInfo(); 1854if (_scrollData != null) 1856horizontalOffset -= _scrollData.HorizontalOffset; 1857verticalOffset -= _scrollData.VerticalOffset; 2010if (_scrollData != null) 2012point = new Point(point.X + _scrollData.HorizontalOffset, point.Y + _scrollData.VerticalOffset); 2027if (_scrollData != null) 2029rect.X -= _scrollData.HorizontalOffset; 2030rect.Y -= _scrollData.VerticalOffset; 3003return _scrollData == null ? Rect.Empty : 3004new Rect(_scrollData.HorizontalOffset, _scrollData.VerticalOffset, _scrollData.ViewportWidth, _scrollData.ViewportHeight);