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edodad  
#1 Posted : Monday, April 28, 2008 9:31:09 PM(UTC)
edodad

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Hi,
I noticed that PanNavigator does not work if the bitmap size is smaller than BitmapViewer size in a Windoiws application.

How can I make it working even if the bitmap size is smaller than BitmapViewer size?

Thanks
Alex Kon  
#2 Posted : Monday, April 28, 2008 11:21:06 PM(UTC)
Alex Kon

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Hello,

Hm... Do you mean - drag small bitmap inside BitmapViewer's white area? It is impossible, the only thing you can do if bitmap is smaller than control - is to set its alignment.
edodad  
#3 Posted : Tuesday, April 29, 2008 12:53:01 AM(UTC)
edodad

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Hi Alex,
OK, thanks... but is it possible to set its position?

For example, if I wish to move it 1 pixel right....

An how to set its alignemennt?

Thanks
Alex Kon  
#4 Posted : Tuesday, April 29, 2008 1:59:13 PM(UTC)
Alex Kon

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Hello,

No, you cannot specify image position in such way. You can only set left-top, left-center, etc. alignment via BitmapViewer.ViewportAlignment property of the control.

Could you explain in more detail your task? I wonder why you want move the image arbitrary inside control
?
edodad  
#5 Posted : Tuesday, April 29, 2008 6:25:32 PM(UTC)
edodad

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Hi Alex,
thanks again for your help.

Unfortunately what I need would be the "full" control on image position inside the bitmap viewer.

Pls have a look at the following screenshot at:

http://www.picoodle.com/view.php?img=/4/4/30/f_testm_3bd4b57.jpg&srv=img29

This is approximately what I'm developing.

The problems are in the "Move section"

After zooming (out), If the bitmap width or heigth is smaller than bitmapviewer, I don't know how to have the 4 arrows working properly.

Could you please give me your opinion and suggest me any workaround applicable?

Thanks
Alex Kon  
#6 Posted : Wednesday, April 30, 2008 7:42:13 PM(UTC)
Alex Kon

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Hello,

There are really no workaround with BitmapViewer control - it just was not intended for such tasks.

However you may take a look at VectorObjects module of the GraphicsMill for .NET. I think that it is much more suitable for your task. Version 4.x includes MultilayerImageEditor Demo which can be used to evaluate its features. Or, another way - you can find short description and download demo source code from our site.

If this way is not acceptable for you for some reasons, I can suggest to implement custom image rubberband, something similar to one implemented in Main Demo print dialog (this demo is also shipped with 4.x versions of GraphicsMill for .NET).
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