/// <summary>
/// Sets the focus to the visible cell view corresponding to a location.
/// </summary>
/// <param name="x">X-coordinate of the location where to set the focus.</param>
/// <param name="y">Y-coordinate of the location where to set the focus.</param>
/// <param name="resetAnchor">If true, resets the selected text anchor.</param>
/// <param name="isMoved">True if the focus was moved.</param>
public virtual void SetFocusToPoint(double x, double y, bool resetAnchor, out bool isMoved)
{
isMoved = false;
ulong OldFocusHash = FocusHash;
int OldIndex = FocusChain.IndexOf(Focus);
int NewIndex = -1;
// Takes page margins and padding into account.
DrawContext.ToRelativeLocation(ref x, ref y);
for (int i = 0; i < FocusChain.Count; i++)
{
ILayoutFocus TestFocus = (ILayoutFocus)FocusChain[i];
if (TestFocus.CellView.CellRect.IsPointInRect(x, y))
{
NewIndex = i;
break;
}
}
if (NewIndex >= 0)
{
if (NewIndex != OldIndex)
{
ChangeFocus(NewIndex - OldIndex, OldIndex, NewIndex, resetAnchor, out bool IsRefreshed);
}
if (Focus is ILayoutTextFocus AsTextFocus)
{
Point CellOrigin = Focus.CellView.CellOrigin;
Size CellSize = Focus.CellView.CellSize;
double XRelativeToCell = x - CellOrigin.X.Draw;
double YRelativeToCell = y - CellOrigin.Y.Draw;
Debug.Assert(XRelativeToCell >= 0 && XRelativeToCell < CellSize.Width.Draw);
Debug.Assert(YRelativeToCell >= 0 && YRelativeToCell < CellSize.Height.Draw);
string Text = GetFocusedText(AsTextFocus);
int NewCaretPosition = DrawContext.GetCaretPositionInText(XRelativeToCell, Text, FocusedTextStyle, CaretMode, Measure.Floating);
Debug.Assert(NewCaretPosition >= 0 && NewCaretPosition <= MaxCaretPosition);
SetTextCaretPosition(Text, NewCaretPosition, resetAnchor, out isMoved);
}
isMoved = true;
}
Debug.Assert(isMoved || OldFocusHash == FocusHash);
}