Changepic and keep original image size with adjust parameter

Question

I have a template in which I'm attempting to change the source of a picture from Image 1, to Image 2 - yet I want Image 2 to keep the original size it was uploaded to the server in. (I want it in the position of Image 1, but its own dimensions.)

To do this, I figured I needed to use the adjust parameter - which I have attempted. The description for adjust=100% is "The picture is adjusted to be proportional to the original size." - which sounded like what I needed to do.

However, in my docx output, this seems to set the image size to be 100% of page width, rather than related to image size. (In the word image properties, it shows my image to be 208%, so I don't think it's related to my file!)

Is this a bug in opentbs, or have I misunderstood the docs? If so, how should I be doing it, or otherwise, can anyone thing of a work around? I attempted not using adjust at all, however that seems to have the same behaviour as adjust=inside - which I presume is the default.

With the normal thanks for a great tool!

Edit: The Error causing tag is below. I've found the problem reproducible when starting from nothing, and with just an image in the word doc. Word 2010, OpenTBS 1.8.

[onshow.logo;ope=changepic;tagpos=after;adjust=100%]

Answer 1

The problems was caused by the TbsPicAdjust() function expecting the image's dimensions to be provided in points, rather than pixels, as php's getimagesize() function was returning.

It was solved by replacing the two fixed coefficients in the TbsPicGetDim_OpenXML_dml() function with 9,525, rather 12,700 as they were originally coded. (Which would be an appropriate value, if the dimensions were in points, rather than pixels.)

After some research, from what I can see, getimagesize() always returns a size in pixels rather than points, so it looks to me like this could be a potential bug?

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Additional Source for coefficient, combined with personal calculations: http://openxmldeveloper.org/discussions/formats/f/15/p/396/933.aspx

Answer 2

Workaround:

It depends if you are using the new (.docx) or old (.doc) style of document. If you have the newer style, I don't know for sure that you can change the image size without putting the tag directly into the XML. The older (VML, I believe) style uses <v:shape> to describe a picture rather than <pic:pic>. With v:shape, you can just put together a CSS-style string that describes the size, etc. of your image. Something like:

$imgStyle = "position:absolute;left:0;top:0;width:800;height:600"

Then you just have a tag next to your changepic tag; something like:

[imgStyle;att=v:shape#style]

The newer style does not use a style string like this to size and position images, the pic:pic element is full of nested tags describing the image so it is harder to get to the details (though you could certainly try). I ended up creating a subtemplate for my image switching because my template is in the new format with compatibility for the old format (so I have to maintain two image blocks). This allows me to maintain the XML directly for the image dimensions, but still be able to edit my main template in Word. I just use a tag in my main template that includes the subtemplate like:

[LineItem.template;block=w:r;file='img.xml']

Separating the manually controlled XML out allows me to edit the main template in Word without damaging the really custom parts. Using this technique though, you may have some trouble with onload/onshow tags in the subtemplate - everything I change in the subtemplate is controlled by a block.