UnityEditor.ProjectBrowserColumnOneTreeViewGUI.GetFirstAndLastRowVisible C# (CSharp) Method

        public override void GetFirstAndLastRowVisible(out int firstRowVisible, out int lastRowVisible)
        {
            float y = base.m_TreeView.state.scrollPos.y;
            float height = base.m_TreeView.GetTotalRect().height;
            firstRowVisible = (int) Mathf.Floor(y / base.k_LineHeight);
            lastRowVisible = firstRowVisible + ((int) Mathf.Ceil(height / base.k_LineHeight));
            float num3 = 15f / base.k_LineHeight;
            firstRowVisible -= (int) Mathf.Ceil(2f * num3);
            lastRowVisible += (int) Mathf.Ceil(2f * num3);
            firstRowVisible = Mathf.Max(firstRowVisible, 0);
            lastRowVisible = Mathf.Min(lastRowVisible, base.m_TreeView.data.rowCount - 1);
        }