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########################################################################
##
## Copyright (C) 2010-2024 The Octave Project Developers
##
## See the file COPYRIGHT.md in the top-level directory of this
## distribution or <https://octave.org/copyright/>.
##
## This file is part of Octave.
##
## Octave is free software: you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## Octave is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Octave; see the file COPYING. If not, see
## <https://www.gnu.org/licenses/>.
##
########################################################################
## -*- texinfo -*-
## @deftypefn {} {@var{style} =} __next_line_style__ (@var{reset})
## Undocumented internal function.
## @end deftypefn
## Return the next line style in the rotation.
function [linestyle, marker] = __next_line_style__ ()
ca = gca ();
styleorder = get (ca, "linestyleorder");
if (isempty (styleorder))
linestyle = "-"; # basic line
marker = "none"; # no marker
return;
endif
if (ischar (styleorder))
styleorder = cellstr (styleorder);
endif
style_idx = fix (get (ca, "linestyleorderindex"));
num_styles = rows (styleorder);
style_idx = mod (style_idx, num_styles);
if (style_idx == 0)
style_idx = num_styles;
elseif (style_idx < 0)
style_idx = 1;
endif
options = __pltopt__ ("__next_line_style__", styleorder{style_idx});
linestyle = options.linestyle;
marker = options.marker;
endfunction
%!test
%! hf = figure ("visible", "off");
%! unwind_protect
%! hax = axes ();
%! set (hax, "colororder", [0 0 1]);
%! set (hax, "linestyleorder", {"-", ":", "--"});
%! hold on;
%! h = plot (1:2,1:2, 2:3,2:3, 3:4,3:4);
%! assert (get (h, "linestyle"), {"-"; ":"; "--"});
%! cla (hax);
%! hold on;
%! h1 = plot (1:2,1:2);
%! h2 = plot (2:3,2:3);
%! h3 = plot (3:4,3:4);
%! assert (get ([h1;h2;h3], "linestyle"), {"-"; ":"; "--"});
%! unwind_protect_cleanup
%! close (hf);
%! end_unwind_protect
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