[Octave-bug-tracker] [bug #39483] axes "handlevisibility" not properly handled with new children objects

[Rik]

Follow-up Comment #8, bug #39483 (project octave):

Why don't you open a new bug report, just to be clear.  I'll probably still be
the one who responds and commits your patches.

It seems like the "core" graphics objects which are low-level functions need
to be checked.  Previously, they always used a call to gca() to plot into the
current, or newly created, axis.  This can now be removed in favor of a call
to __plt_get_axis_arg__ to check whether they are being re-parented.

The line.m function now reads:


## Get any axis argument which may be in a 'parent' PROP/VAL pair
[hax, varargin] = __plt_get_axis_arg__ ("line", varargin{:});

htmp = __line__ (hax, varargin{:});

if (nargout > 0)
  h = htmp;
endif


The core graphics objects which possibly need updating are:
axes
image
patch
rectangle
surface
text

Other functions, like surf, build upon these and probably do the right thing
alread.

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