/// <summary>
/// Show the call tip.
/// </summary>
/// <param name="tip"></param>
/// <param name="handlers"></param>
/// <param name="position"></param>
/// <param name="hint"></param>
private void TipShow(ref CallTip tip, ShowTipEventHandler handlers, int position, object hint)
{
// create calltip class
if (tip == null)
{
tip = new CallTip();
tip.Enter += new EventHandler(tip_MouseEnter);
tip.SetChartIntervals(10, 0);
Theme.Apply(tip);
}
// get screen position
var rect = GetWordBounds(position);
rect.Location = PointToScreen(rect.Location);
rect.Inflate(3, 3);
// Fore some reason PointToScreen can return
// different positions. In this case the call
// tip needs to be repositioned.
if (!tip.Visible || tip.Location != rect.Location)
{
// invoke event hadlers
var e = new ShowTipEventHandlerArgs();
e.TextPosition = position;
e.Definition = hint;
e.ScreenPosition = rect.Location;
handlers?.Invoke(this, e);
if (e.Cancle)
{
return;
}
// show calltip
if (hint is string)
{
tip.Show(rect, (string)hint);
}
else if (hint is Array)
{
const int w = 500;
var X = (Array)((Array)hint).GetValue(0);
var Y = (Array)((Array)hint).GetValue(1);
tip.Show(rect, X, Y, w, w * 0.6, ContentAlignment.TopLeft, 0.3, 0.3);
}
// make sure the calltip window
// is in front of all others
tip.BringToFront();
}
}
