private void geoImage_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
var mousePosition = e.GetPosition(geoImage);
if (((WriteableBitmap)geoImage.Source).GetPixel((int)mousePosition.X, (int)mousePosition.Y) == editColor)
{
// Edit mode and user rightclicked an edit point
LatLongRegion foundRegion = null;
LatLongDegreePoint hitPoint = FindHitPoint(mousePosition, out foundRegion);
if (hitPoint != null)
{
var msg = LatLongUtil.GetLatLongStringFromPoint(new Point(hitPoint.X, hitPoint.Y));
if (foundRegion != null)
{
msg += "\nRegion: " + foundRegion.Name
+ "\nColor code: " + foundRegion.ColorName;
}
MessageBox.Show(msg);
}
}
else
{
// Enter pan mode
origin = e.GetPosition(this);
this.Cursor = Cursors.Hand;
geoImage.CaptureMouse();
}
}
// Find the nearest point that was just clicked on by the user
private LatLongDegreePoint FindHitPoint(Point mousePosition, out LatLongRegion foundRegion)
{
var bitmap = (WriteableBitmap)geoImage.Source;
foundRegion = null;
LatLongDegreePoint foundPoint = null;
foreach (var r in regions)
{
foundPoint = r.Coordinates.Find(point => Math.Abs(point.X - mousePosition.X) < editPointDelta && Math.Abs(point.Y - mousePosition.Y) < editPointDelta);
if (foundPoint != null)
{
foundRegion = r;
break;
}
}
return(foundPoint);
}
