On Oct 9, 2014, at 14:43, Carsten Bormann wrote:
I am a huge fan of Skim’s auto-crop feature.
This unique feature really helps with looking at PDFs that exhibit generous
margins.
However, it does not help with vertical whitespace internal to the page.
The most obvious case is double-spacing (incredibly, people still do that).
But also a page number at the end of a half-full page could be moved up.
So how would I do this?
1) group the features on the page into clusters of features, pairs of which
share a common horizontal position. Sort these clusters by vertical bounding
box coordinates.
2) process the whitespace between the clusters (i.e., move the clusters) in
some way, e.g. half it if it is more than 2 pt, with some logarithmic rule
that squashes large whitespace some more, but still keeps it larger.
I don’t know enough about PDFkit etc. to program this myself (or even to find
out if the pieces are in place to make this happen).
Grüße, Carsten
You cannot change the internal layout of the PDF itself. All that is available
is the overall crop rectangle. This is not so much about PDFKit, but about the
PDF format.
Christiaan
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