Jan-Åke Larsson wrote: > Jan-Åke Larsson wrote: >> Angus Leeming wrote: >> > I use it within LyX to calculate the 'ascent fraction' of the >> > snippet. (A snippet whose base line was in the middle of the image >> > would have an ascent fraction of 0.5.) The code that does this inside >> > LyX is (stripped down): >> > >> <snip> >> > >> > This information is used to position the image on the LyX screen. >> > >> > Since both dvipng and dvips,gs,pnmcrop use the same dvi file, it >> > seems to make sense to use the same mechanism. However, if you have >> > another mechanism to obtain this info within dvipng, then please do >> > tell me. >> >> I see. There are two possibilities: >> >> 1) Make dvipng detect usage of the 'tightpage' option and use the >> image metrics within the DVI. >> >> 2) Output the position of the baseline of the first character output >> in each image, in pixels or possibly as a fraction > > Actually, it is better than that. I had a look at this last night (and > just checked it in).
Jan-Åke, many thanks for this and apologies for the delay in replying. Trying it out is in my Pending tray ;-) Angus
