Gets a coeficient which will determine in each layout pass the size of the viewport. If zero is specified the size of the viewport will be equal to the scrollviewer viewport. If 0.5 is specified the size of the viewport will be enlarged to take up half screen more at both sides of the original viewport. (Inherited from C1.WPF.C1ListViewerPanel)
Gets a coeficient which will determine in each layout pass the size of the viewport to render items in preview mode. (Inherited from C1.WPF.C1ListViewerPanel)