Re: [docbook-apps] Images in PDF appear too large

["T.G. Mutato" <throw6617@gmail.com>]

Thanks Bob. Specifying the size in something other than pixels will
definitely work, although for images where you don't want scaling
(like screen shots), there's still a bit of an oddity: the
measurements need to be based on something like 96dpi regardless of
what resolution the image is actually saved in. If I have a screen
shot that is 35 by 15 pixels and saved at 72dpi, I need to convert to
inches using 96dpi to get a screen size of 0.365 by 0.156 inches (If I
use 72dpi the image doesn't look right in the pdf).

An option in FOP and XEP to effectively ignore the image resolution
when pixels are specified would be sweet.

tgm

On 4/27/07, Bob Stayton <bobs@sagehill.net> wrote:
> Hi,
> Your examples use "px" (pixels) as the units for scaling, but px is not
> well defined in XSL-FO.  In XEP, the doc says it assumes 120 dpi for
> pixels, although the XSL-FO spec suggests 90 dpi.  I don't know what FOP
> assumes.
>
> I would suggest you use a unit such as "in" or "mm" to specify the size.
> You should be able to just set contentwidth="0.25in", and the image will be
> output 0.25 in wide and scaled proportionally, with the viewport the same
> size.  That should work in both XEP and FOP.
>
>
> Bob Stayton
> Sagehill Enterprises
> DocBook Consulting
> bobs@sagehill.net