[Octave-bug-tracker] [bug #55485] Printing rotated text only works for 90 degree increments with qt toolkit (regression)

[Rik]

Follow-up Comment #6, bug #55485 (project octave):

I agree.  FLTK doesn't need to be fully supported so just issuing a warning
and using -painters instead would be fine.

If you want to detect rotated text, this code should work


ht = findall (gca, "type", "text");
angles = [get(ht, "rotation"){:}];
if (any (mod (angles, 90)))
  disp ("non-90 degree rotation");
endif


I put this code in a script find_90.m and then did


demo text 1
tic; find_90; toc


It takes about 35 milliseconds on my computer and this is with 112 text
objects.  On an ordinary plot it is 10X faster.


plot (1:10, 'o-')
tic; find_90; toc
Elapsed time is 0.00353289 seconds.


So, I think you could put this in as a placeholder.

Eventually, and I think there is already a bug report on this, we would like
to support rotated text onscreen and then WYSIWYG will be appropriate.


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