/// <summary>
/// Draw the focus enter/leave image area
/// </summary>
/// <param name="sender">The sender of the event (the image area)</param>
/// <param name="e">The event arguments</param>
private void FocusArea_DrawImage(object sender, DrawImageEventArgs e)
{
Graphics g = e.Graphics;
ImageAreaPolygon a = (ImageAreaPolygon)sender;
Rectangle r = a.BoundingRectangle;
// Offset the area rectangle by the draw event offset
r.Offset(e.ImageOffset.X, e.ImageOffset.Y);
Point[] pts = new Point[a.Points.Count];
a.Points.CopyTo(pts, 0);
using (PathGradientBrush pgb = new PathGradientBrush(pts))
{
// Translate the brush coordinates to account for the offset
using (Matrix m = new Matrix())
{
m.Translate((float)e.ImageOffset.X, (float)e.ImageOffset.Y);
pgb.Transform = m;
if (e.DrawState == DrawState.Focus)
{
pgb.SurroundColors = new Color[] { Color.DarkOrange }
}
;
else
{
pgb.SurroundColors = new Color[] { Color.Navy }
};
pgb.CenterColor = Color.Gray;
g.FillRectangle(pgb, r);
r.Y += 20;
g.DrawString((string)a.Tag, buttonFont, Brushes.Yellow, r, sfFormat);
}
}
}
/// <summary>
/// Handle the leave event for the focus image area
/// </summary>
/// <param name="sender">The sender of the event (the image area)</param>
/// <param name="e">The event arguments</param>
private void FocusArea_Leave(object sender, EventArgs e)
{
ImageAreaPolygon a = (ImageAreaPolygon)sender;
a.Tag = "Area Lost Focus";
}
/// <summary>
/// Handle the enter event for the focus image area
/// </summary>
/// <param name="sender">The sender of the event (the image area)</param>
/// <param name="e">The event arguments</param>
private void FocusArea_Enter(object sender, EventArgs e)
{
ImageAreaPolygon a = (ImageAreaPolygon)sender;
a.Tag = "Area Got Focus";
}
