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已答复How to limit how far one can zoom in & out

  • 2009年6月15日 5:55Radeldudel 用户奖牌用户奖牌用户奖牌用户奖牌用户奖牌
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    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

     

答案

  • 2009年6月16日 4:02Baruni 用户奖牌用户奖牌用户奖牌用户奖牌用户奖牌
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    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;
        }
     

全部回复

  • 2009年6月16日 4:02Baruni 用户奖牌用户奖牌用户奖牌用户奖牌用户奖牌
     已答复包含代码
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    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;
        }