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

        protected override void OnMouseMove(MouseEventArgs e)
        {
            MouseX = e.X;
            MouseY = e.Y;

            TextPoint pos = Painter.CharFromPixel(e.X, e.Y);
            Row row = null;
            if (pos.Y >= 0 && pos.Y < Document.Count)
                row = Document[pos.Y];

            #region RowEvent

            var rea = new RowMouseEventArgs {Row = row, Button = e.Button, MouseX = MouseX, MouseY = MouseY};
            if (e.X >= View.TextMargin - 7)
            {
                rea.Area = RowArea.TextArea;
            }
            else if (e.X < View.GutterMarginWidth)
            {
                rea.Area = RowArea.GutterArea;
            }
            else if (e.X < View.LineNumberMarginWidth +
                           View.GutterMarginWidth)
            {
                rea.Area = RowArea.LineNumberArea;
            }
            else if (e.X < View.TextMargin - 7)
            {
                rea.Area = RowArea.FoldingArea;
            }

            OnRowMouseMove(rea);

            #endregion

            try
            {
                if (Document != null)
                {
                    if (e.Button == MouseButtons.Left)
                    {
                        if (View.Action == EditAction.SelectText)
                        {
                            //Selection ACTIONS!!!!!!!!!!!!!!
                            Caret.Blink = true;
                            Caret.SetPos(pos);
                            if (e.X <= View.TotalMarginWidth)
                                Caret.MoveDown(true);
                            Caret.CropPosition();
                            Selection.MakeSelection();
                            ScrollIntoView();
                            Redraw();
                        }
                        else if (View.Action == EditAction.None)
                        {
                            if (IsOverSelection(e.X, e.Y))
                            {
                                BeginDragDrop();
                            }
                        }
                        else if (View.Action == EditAction.DragText) {}
                    }
                    else
                    {
                        TextPoint p = pos;
                        Row r = Document[p.Y];
                        bool DidShow = false;

                        if (r != null)
                        {
                            if (e.X >= r.Expansion_PixelEnd && r.IsCollapsed)
                            {
                                // ROB: Added check for Collapsed tooltips.
                                if (CollapsedBlockTooltipsEnabled)
                                {
                                    if (r.expansion_StartSpan != null)
                                    {
                                        if (r.expansion_StartSpan.StartRow != null &&
                                            r.expansion_StartSpan.EndRow != null &&
                                            r.expansion_StartSpan.Expanded == false)
                                        {
                                            string t = "";
                                            int j = 0;
                                            for (int i = r.expansion_StartSpan.StartRow.Index;
                                                 i <=
                                                 r.expansion_StartSpan.EndRow.Index;
                                                 i++)
                                            {
                                                if (j > 0)
                                                    t += "\n";
                                                Row tmp = Document[i];
                                                string tmpstr = tmp.Text.Replace("\t", "    ");
                                                t += tmpstr;
                                                if (j > 20)
                                                {
                                                    t += "...";
                                                    break;
                                                }

                                                j++;
                                            }

                                            //tooltip.res
                                            tooltip.InitialDelay = TooltipDelay;
                                            if (tooltip.GetToolTip(this) != t)
                                                tooltip.SetToolTip(this, t);
                                            tooltip.Active = true;
                                            DidShow = true;
                                        }
                                    }
                                }
                            }
                            else
                            {
                                Word w = Document.GetFormatWordFromPos(p);
                                if (w != null)
                                {
                                    if (w.InfoTip != null)
                                    {
                                        tooltip.InitialDelay = TooltipDelay;
                                        if (tooltip.GetToolTip(this) != w.InfoTip)
                                            tooltip.SetToolTip(this, w.InfoTip);
                                        tooltip.Active = true;
                                        DidShow = true;
                                    }
                                }
                            }
                        }

                        if (tooltip != null)
                        {
                            if (!DidShow)
                                tooltip.SetToolTip(this, "");
                        }
                    }

                    SetMouseCursor(e.X, e.Y);
                    base.OnMouseMove(e);
                }
            }
            catch {}
        }