/// <summary>
/// Handles the touch down event.
/// </summary>
/// <param name="e">Touch event arguments.</param>
/// <returns>Touch event arguments.</returns>
public override TouchEventArgs OnTouchDown(TouchEventArgs e)
{
// Global coordinates to local coordinates
Point localPoint = new Point(e.Point.X - Rect.X, e.Point.Y - Rect.Y);
if (_knob.Contains(localPoint))
{
_dragging = true;
Invalidate();
if (_touchThread == null || (_touchThread != null && !_touchThread.IsAlive))
{
GlideTouch.IgnoreAllEvents = true;
_touchThread = new Thread(TouchThread);
_touchThread.Priority = ThreadPriority.Highest;
_touchThread.Start();
}
e.StopPropagation();
return(e);
}
if (Rect.Contains(e.Point))
{
RenderKnob(e.Point);
e.StopPropagation();
}
return(e);
}
/// <summary>
/// Handles the touch up event.
/// </summary>
/// <param name="e">Touch event arguments.</param>
/// <returns>Touch event arguments.</returns>
public override TouchEventArgs OnTouchUp(TouchEventArgs e)
{
if (!_pressed)
{
return(e);
}
if (!_moving && Rect.Contains(e.Point))
{
int x = Parent.X + X;
int y = Parent.Y + Y;
int index = ((_listY + e.Point.Y) - y) / RowHeight;
int rowIndex = index;
// If headers are present the rowIndex needs to be offset
if (ShowHeaders)
{
rowIndex--;
}
int columnIndex = 0;
DataGridColumn dataGridColumn;
Geom.Rectangle rect;
for (int i = 0; i < _columns.Count; i++)
{
dataGridColumn = (DataGridColumn)_columns[i];
rect = new Geom.Rectangle(x, y, dataGridColumn.Width, Height);
if (rect.Contains(e.Point))
{
columnIndex = i;
break;
}
x += dataGridColumn.Width;
}
if (index == 0 && ShowHeaders && SortableHeaders)
{
Sort(columnIndex);
Invalidate();
}
else
{
if (TappableCells)
{
SelectedIndex = rowIndex;
TriggerTapCellEvent(this, new TapCellEventArgs(columnIndex, rowIndex));
}
}
}
_pressed = false;
_moving = false;
_ignoredTouchMoves = 0;
return(e);
}