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Image fit in table

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Klitgaard

Post subject: Image fit in table

Posted: Tue Jan 08, 2013 3:02 pm

Joined: Tue Apr 24, 2012 2:28 pm
Posts: 7

Hi there,
A simple question: I have a table cell, 15cm wide and 19 cm high. I want to fit any image into it, keeping aspect ratio.

Here is what I try

Code:

   Paragraph par = row.Cells[1].AddParagraph();
   par.Format.Alignment = ParagraphAlignment.Center;
   MigraDoc.DocumentObjectModel.Shapes.Image image = par.AddImage("myImage.png");

   /*xxx*/
   image.LockAspectRatio = true;

Now,
If I make

Code:

/*xxx*/

Code:

image.Height = "19cm";

, the width gets too big for a landscape image.
If I make

Code:

/*xxx*/

Code:

image.Width = "15cm";

, the height gets too big for a portrait image.
If I make set both width and height, I loose my aspect ratio. I bet this is by design, but how do I scale my image to max, keeping aspect ration and without exceeding the cell limits ?

Thanks a lot in advance
Lars Klitgaard, Denmark

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Thomas Hoevel

Post subject: Re: Image fit in table

Posted: Tue Jan 08, 2013 3:51 pm

PDFsharp Guru

Joined: Mon Oct 16, 2006 8:16 am
Posts: 3096
Location: Cologne, Germany

Hi!

Klitgaard wrote:

but how do I scale my image to max, keeping aspect ration and without exceeding the cell limits?

Calculate the width you'd need for a height of 19 cm, then use the smaller width value for the image (either 15 cm or the calculated value).
Sorry, but AFAIK there is no built-in solution that solves this task.

_________________
Regards
Thomas Hoevel
PDFsharp Team

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Klitgaard

Post subject: Re: Image fit in table

Posted: Wed Jan 09, 2013 8:27 am

Joined: Tue Apr 24, 2012 2:28 pm
Posts: 7

Hi Thomas,
Thanks a lot for your fast answer. Here is what I did - which seems to do the trick (assuming pixels are square).
Comments are welcome.
Lars Klitgaard

Code:

Paragraph par = row.Cells[1].AddParagraph();
par.Format.Alignment = ParagraphAlignment.Center;
MigraDoc.DocumentObjectModel.Shapes.Image image = par.AddImage("myImage.png");
            
System.Drawing.Bitmap bmp = new Bitmap(tempImageFilename);
if ((Convert.ToDouble(bmp.Height) / bmp.Width) > 19f / 15f)
    image.Height = "19cm";
else
    image.Width = "15cm";

image.LockAspectRatio = true;

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Thomas Hoevel

Post subject: Re: Image fit in table

Posted: Wed Jan 09, 2013 9:40 am

PDFsharp Guru

Joined: Mon Oct 16, 2006 8:16 am
Posts: 3096
Location: Cologne, Germany

If pixels are not square, use the code shown here:
viewtopic.php?p=5770#p5770

_________________
Regards
Thomas Hoevel
PDFsharp Team

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