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Normal Topic icon quality...? (Read 1848 times)
mberger
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icon quality...?
Mar 14th, 2009 at 9:40am
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Hi,

after i added a custom IconNode to my diagram everthing is allright. But if i move this icon, the quality of the icon (image) decreases.

... is there any possibility to avoid this?

Best regards Marco
  
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Stoyo
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Re: icon quality...?
Reply #1 - Mar 14th, 2009 at 9:56am
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Try to align the coordinates where the image is drawn to the boundaries of device pixels. You can do that by calling ClientToDoc(DocToClient(diagramPoint)), and then use the result as the top-left coordinates for DrawImage.
  
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mberger
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Re: icon quality...?
Reply #2 - Mar 14th, 2009 at 10:30am
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... sorry but im realy new in coding vb.net.

I'm adding my shapes like the sample "IconNodes".So i'm not shure where i have to add the doctoclient function.

And where can i get the system.drawing.pointF "diagrampoint"?

Best regards Marco
  
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Stoyo
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Re: icon quality...?
Reply #3 - Mar 15th, 2009 at 11:41am
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In IconNode.vb find the Draw implementation and replace the DrawImage call with the following:

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' Draw the icon center at the top
Dim dv As DiagramView = options.TargetView
Dim pf As New PointF(Bounds.X + Bounds.Width / 2 - imageSize.Width / 2, Bounds.Y)
pf = dv.ClientToDoc(dv.DocToClient(pf))
graphics.DrawImage(imgIcon, pf)


options.TargetView will be Nothing when exporting an image or a PDF file, so you must check for this if you plan to use the export features.

I hope that helps,
Stoyan
  
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mberger
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Re: icon quality...?
Reply #4 - Mar 16th, 2009 at 5:25am
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Hi Stoyan,

thanks!!!

... thats works fine for me!
  
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