private void imageContainer_MouseWheel(object sender, MouseWheelEventArgs e)
{
try
{
//get the transformer form the image transform group
ScaleTransform transform = imageTransformGroup.Children[0] as ScaleTransform;
if (e.Delta > 0)
{
browser.ZoomIn(1.3, transform);
}
else
{
browser.ZoomOut(1.3, transform);
}
//change the cursor according zoom in and out
if (transform.ScaleX >= 1.3)
{
imageContainer.Cursor = Cursors.Hand;
}
else
{
imageContainer.Cursor = Cursors.Arrow;
}
}
catch (Exception)
{
System.Windows.MessageBox.Show("Fail to get the scale transformer");
System.Environment.Exit(1);
}
}