protected void StartOutOfBoundsSelection(int direction)
{
if (VScrollBar == null || !VScrollBar.Visible)
{
return;
}
OutOfBondsDirection = direction;
if (OutOfBoundsSelectionTimer == null)
{
OutOfBoundsSelectionTimer = new TaskTimer(50, () => {
if (OutOfBondsDirection < 0)
{
RowManager.SetCursorPosition(0, 0 - ScrollOffsetY - Padding.Top - RowManager.LineHeight);
SetSelection();
}
else if (OutOfBondsDirection > 0)
{
RowManager.SetCursorPosition(0, Height - ScrollOffsetY + Padding.Height + RowManager.LineHeight + RowManager.LineHeight);
SetSelection();
}
EnsureCurrentRowVisible();
VScrollBar.Value += OutOfBondsDirection * VScrollBar.SmallChange;
}, 500);
OutOfBoundsSelectionTimer.Start();
}
else if (!OutOfBoundsSelectionTimer.Enabled)
{
OutOfBoundsSelectionTimer.Start();
}
}
public override void OnMouseDown(MouseButtonEventArgs e)
{
base.OnMouseDown(e);
if (e.Button == MouseButton.Left)
{
RowManager.SetCursorPosition(e.X - Left - ScrollOffsetX - Padding.Left, e.Y - Top - ScrollOffsetY - Padding.Top);
m_SelStart = RowManager.AbsCursorPosition;
if (!ModifierKeys.ShiftPressed)
{
SelLength = 0;
}
IsMouseMoving = true;
CursorOn = true;
}
Invalidate();
}
public override void OnMouseMove(MouseMoveEventArgs e)
{
base.OnMouseMove(e);
if (IsMouseMoving)
{
if (e.Y > Bottom - 2)
{
StartOutOfBoundsSelection(1);
}
else if (e.Y < Top + 2)
{
StartOutOfBoundsSelection(-1);
}
else
{
Invalidate(1);
StopOutOfBoundsSelection();
EnsureCurrentRowVisible();
RowManager.SetCursorPosition(e.X - Left - ScrollOffsetX - Padding.Left, e.Y - Top - ScrollOffsetY - Padding.Top);
SetSelection();
}
}
}