On Thu, Jan 02, 2025 at 01:49:44PM +0100, pertu...@free.fr wrote:
> On Thu, Jan 02, 2025 at 12:57:43AM +0000, Gavin Smith wrote:
> > If texi2any generates the images with a given DPI (dots per inch) setting
> > to dvips (-d argument) (say 200), then it seems that all Emacs would need
> > is a variable to specify the DPI of the Info images.  The image size
> > would then be scaled according to the size of the font used to display
> > the text in the Info buffer.  Suppose this is a nominal 10pt (10/72.27 in).
> 
> My point is that it is not possible to distinguish images coming from
> regular @image commands, and images coming from @math or @displaymath
> converted to images.  The scale relative to the image should only apply
> to the images coming from @math or @displaymath converted to images, but
> I can't see a way to separate those images from output of @image.

We could add an extra attribute to the image tag.  The syntax of the
image tag could be:
  
      <image> =
  ^@^H[image src="<image file>"
              (text="<txt file contents>")?
              (alt="<alt text>")?
              (dpi="<dots per inch>")?
  ^@^H]

(Edited from Info node "(texinfo)Info Format Image".)

We could check with Emacs developers if they could make use of such an
attribute or if some other solution would be preferred.

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