How to limit how far one can zoom in & out

Mon, 15 Jun 2009 05:55:37 Z

Is there a way to limit how far the viewer can zoom into or out of the picture?

I would like to stop the zooming in when the viewer reaches the pixel level, and the zooming out to the size of the picture.

To be able to zoom until the picture content either looks blurry or is small on the screen is not very appealing to me.

Is there a way to achieve this, to limit the zoom range?

kind regards,
Sam

How to limit how far one can zoom in & out

Tue, 16 Jun 2009 04:02:35 Z

You can change the code in the page.xaml.cs file. I'm not sure if there are other ways of setting it but this is how I set it:

In the example below, the zoom level is set between 0.45 and 128

        private void Zoom(double newzoom, Point p)
        {
            if (newzoom < 0.45)
            {
                newzoom = 0.45;
            }
            if (newzoom > 128)
            {
                newzoom = 128;
            }

            msi.ZoomAboutLogicalPoint(newzoom / zoom, p.X, p.Y);
            zoom = newzoom;
        }