[Octave-bug-tracker] [bug #43907] OpenGL render code called even when gnuplot is graphics_toolkit

[John W. Eaton]

Follow-up Comment #14, bug #43907 (project octave):

As I recall freetype was used to compute the extent of the text object even
when gnuplot is used.  Is there some other way that this job can be done?  Or
a better way to use freetype to compute the extent when symbols appear in the
text but the font is selected to be something other than the symbol font? 
Should we just be telling freetype to use the symbol font when processing
symbol characters if a specific font is selected?  I see that


graphics_toolkit gnuplot
text (0.5, 0.5, '\0')


doesn't produce the warning.  It also doesn't show the empty set symbol for
me, though it does work correctly with fltk or qt.

If we want to avoid freetype entirely when using gnuplot, then is there some
way to ask gnuplot for the extent of a text object that it displays?

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