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#1 Posted : Monday, April 10, 2006 1:40:09 AM(UTC)

Gianni  
Gianni

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Hi,

We've created an application in .NET 2005 to view pdf-files. When we zoom out, the quality of the pdf is bad. How can we fix this?

Thankx.

Sofie

 

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#2 Posted : Tuesday, April 11, 2006 11:30:15 PM(UTC)

Bashar  
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Hello Sofie,


Which programming interface (e.g. COM, .NET, etc.) are you using?  Also, which product (e.g. Raster, Document, etc.) do you have?

Thanks,

 
#3 Posted : Wednesday, April 12, 2006 3:25:25 AM(UTC)

Gianni  
Gianni

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We are using C#.NET and RasterImageViewer.

This is the code we're using to open a pdf.

RasterPaintProperties _paintProperties = pdfRasterImageViewer.PaintProperties;
_paintProperties.PaintDisplayMode =
RasterPaintDisplayModeFlags.Bicubic;
_image =
new PdfImage(_codecs.Load(imageName));
pdfRasterImageViewer.Image = _image;

This is the code we're using to zoom:

pdfRasterImageViewer.ScaleFactor /= zoomFactor;

Thanks,
Sofie

 
#4 Posted : Thursday, April 13, 2006 12:59:06 AM(UTC)

Bashar  
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If you have Document or Medical Imaging, then try setting PaintDisplayMode to ScaleToGray.

 
#5 Posted : Thursday, April 13, 2006 1:39:51 AM(UTC)

Gianni  
Gianni

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Unfortunately this was not the solution.

 

The pdf in true size looks great but when we zoom in or out not.

 

 
#6 Posted : Sunday, April 16, 2006 12:11:11 AM(UTC)

Bashar  
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Can you please post a sample PDF?  Please put it in a ZIP file.

Thanks,
 
#7 Posted : Monday, April 17, 2006 11:17:07 PM(UTC)

Gianni  
Gianni

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Hi,

Here is a sample pdf and a screenshot so you can see what I mean.

File Attachment(s):
Leadtools.zip (486kb) downloaded 27 time(s).
 
#8 Posted : Tuesday, April 18, 2006 6:10:42 AM(UTC)

Bashar  
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This is a DPI issue.  I tried loading the file with 150 DPI and it
looks much better.  To do that, set the
RasterCodecs.Options.PDF.Load.XResolution and YResolution properties to 150 or higher.

 
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