public void PositionCaret(OneRowCol CaretRowCol)
{
// position the caret cursor.
VisualItemCursor ic = null;
if (CaretRowCol != null)
{
var rowCol = CaretRowCol.ToZeroRowCol();
this.CaretCursor = VisualItems.FindVisualItemCanvas(rowCol);
}
else
{
// find the first field on the screen.
ic = VisualItems.InputItemList().FirstOrDefault();
this.CaretCursor = new CanvasPositionCursor(ic);
}
// by default. place the caret at first input field on screen.
if (this.CaretCursor.RowCol == null)
{
var rowCol = new ZeroRowCol(0, 0);
this.CaretCursor = VisualItems.FindVisualItemCanvas(rowCol);
}
// position the caret cursor at the visual item.
this.CanvasCaret.StartBlink(this.CaretCursor, true);
}
private void Canvas_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
var pos = e.GetPosition((IInputElement)this.Canvas);
var rowCol = pos.CanvasPosToRowCol(this.CanvasDefn.CharBoxDim, this.ContentStart);
// rowCol = this.AdjustShowRowCol.LocalPosToParentPos(rowCol);
if (this.DoHandleUserInput == true)
{
this.CaretCursor = VisualItems.FindVisualItemCanvas(rowCol);
this.CanvasCaret.StartBlink(this.CaretCursor);
this.Canvas.Focus();
}
}