protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (Option.SeriesCount == 0)
{
SetPieAndAzIndex(-1, -1);
return;
}
for (int pieIndex = 0; pieIndex < Option.SeriesCount; pieIndex++)
{
for (int azIndex = 0; azIndex < Option.Series[pieIndex].Data.Count; azIndex++)
{
Angle angle = Angles[pieIndex][azIndex];
PointF pf = angle.Center;
if (MathEx.CalcDistance(e.Location, pf) > angle.Outer)
{
continue;
}
if (MathEx.CalcDistance(e.Location, pf) < angle.Inner)
{
continue;
}
double az = MathEx.CalcAngle(e.Location, pf);
if (az >= angle.Start && az <= angle.Start + angle.Sweep)
{
SetPieAndAzIndex(pieIndex, azIndex);
if (tip.Text != angle.Text)
{
tip.Text = angle.Text;
tip.Size = new Size((int)angle.TextSize.Width + 4, (int)angle.TextSize.Height + 4);
}
if (az >= 0 && az < 90)
{
tip.Top = e.Location.Y + 20;
tip.Left = e.Location.X - tip.Width;
}
else if (az >= 90 && az < 180)
{
tip.Left = e.Location.X - tip.Width;
tip.Top = e.Location.Y - tip.Height - 2;
}
else if (az >= 180 && az < 270)
{
tip.Left = e.Location.X;
tip.Top = e.Location.Y - tip.Height - 2;
}
else if (az >= 270 && az < 360)
{
tip.Left = e.Location.X + 15;
tip.Top = e.Location.Y + 20;
}
if (Option.ToolTip.Visible)
{
if (!tip.Visible)
{
tip.Visible = angle.Text.IsValid();
}
}
return;
}
}
}
SetPieAndAzIndex(-1, -1);
tip.Visible = false;
}