Alsing.Windows.Forms.SyntaxBox.EditViewControl.DoResize C# (CSharp) Method

        private void DoResize()
        {
            if (Visible && Width > 0 && Height > 0 &&
                IsHandleCreated)
            {
                try
                {
                    if (Filler == null)
                        return;

                    TopThumb.Width = SystemInformation.VerticalScrollBarWidth;
                    LeftThumb.Height = SystemInformation.HorizontalScrollBarHeight;
                    vScroll.Width = SystemInformation.VerticalScrollBarWidth;
                    hScroll.Height = SystemInformation.HorizontalScrollBarHeight;

                    if (TopThumbVisible)
                    {
                        vScroll.Top = TopThumb.Height;
                        if (hScroll.Visible)
                            vScroll.Height = ClientHeight - hScroll.Height -
                                             TopThumb.Height;
                        else
                            vScroll.Height = ClientHeight - TopThumb.Height;
                    }
                    else
                    {
                        if (hScroll.Visible)
                            vScroll.Height = ClientHeight - hScroll.Height;
                        else
                            vScroll.Height = ClientHeight;

                        vScroll.Top = 0;
                    }

                    if (LeftThumbVisible)
                    {
                        hScroll.Left = LeftThumb.Width;
                        if (vScroll.Visible)
                            hScroll.Width = ClientWidth - vScroll.Width -
                                            LeftThumb.Width;
                        else
                            hScroll.Width = ClientWidth - LeftThumb.Width;
                    }
                    else
                    {
                        if (vScroll.Visible)
                            hScroll.Width = ClientWidth - vScroll.Width;
                        else
                            hScroll.Width = ClientWidth;

                        hScroll.Left = 0;
                    }


                    if (Width != OldWidth && Width > 0)
                    {
                        OldWidth = Width;
                        if (Painter != null)
                            Painter.Resize();
                    }


                    vScroll.Left = ClientWidth - vScroll.Width;
                    hScroll.Top = ClientHeight - hScroll.Height;

                    LeftThumb.Left = 0;
                    LeftThumb.Top = hScroll.Top;

                    TopThumb.Left = vScroll.Left;
                    TopThumb.Top = 0;


                    Filler.Left = vScroll.Left;
                    Filler.Top = hScroll.Top;
                    Filler.Width = vScroll.Width;
                    Filler.Height = hScroll.Height;
                }
                catch {}
            }
        }