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## Copyright (C) 2005-2013 John W. Eaton
##
## 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
## <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {} __go_draw_figure__ (@var{h}, @var{plot_stream}, @var{enhanced}, @var{mono})
## Undocumented internal function.
## @end deftypefn
## Author: jwe
function __go_draw_figure__ (h, plot_stream, enhanced, mono)
htype = get (h, "type");
if (strcmp (htype, "figure"))
## Get complete list of children.
kids = allchild (h);
nkids = length (kids);
if (nkids > 0)
fputs (plot_stream, "\nreset;\n");
fputs (plot_stream, "set autoscale keepfix;\n");
fputs (plot_stream, "set origin 0, 0\n");
fputs (plot_stream, "set size 1, 1\n");
bg = get (h, "color");
if (isnumeric (bg))
fprintf (plot_stream, "set obj 1 rectangle from screen 0,0 to screen 1,1 behind fc rgb \"#%02x%02x%02x\"\n", 255 * bg);
bg_is_set = true;
else
bg_is_set = false;
endif
fg_was_set = false;
for i = nkids:-1:1
type = get (kids(i), "type");
switch (type)
case "axes"
if (strcmpi (get (kids (i), "tag"), "legend"))
## This is so ugly. If there was a way of getting
## gnuplot to give us the text extents of strings
## then we could get rid of this mess.
lh = getfield (get (kids(i), "userdata"), "handle");
if (isscalar (lh))
## We have a legend with a single parent. It'll be handled
## below as a gnuplot key to the axis it corresponds to
continue;
else
ca = lh(1);
## Rely upon listener to convert axes position
## to "normalized" units.
legend_axes_units = get (kids(i), "units");
legend_axes_position = get (kids(i), "position");
legend_axes_outerposition = get (kids(i), "outerposition");
legend_axes_box = get (kids(i), "box");
legend_axes_ylim = get (kids(i), "ylim");
orig_axes_units = get (ca, "units");
hlgnd = get (kids(i));
unwind_protect
set (ca, "units", "normalized");
set (kids(i), "units", "normalized", "box", "off",
"ylim", [-2, -1], "position", get (ca(1), "position"),
"outerposition", get (ca(1), "outerposition"));
## Create a new set of lines with the appropriate
## displaynames, etc
toberm = [];
hobj = get (kids(i), "children");
for j = numel (hobj) : -1 : 1
if (! strcmp (get (hobj(j), "type"), "text"))
continue;
endif
displayname = get (hobj(j), "string");
ll = [];
lm = [];
for k = numel (hobj) : -1 : 1
if (! strcmp (get (hobj(k), "type"), "line"))
continue;
endif
if (get (hobj(j), "userdata")
!= get (hobj(k), "userdata"))
continue;
endif
if (! strcmp (get (hobj(k), "linestyle"), "none"))
ll = hobj(k);
endif
if (! strcmp (get (hobj(k), "marker"), "none"))
lm = hobj(k);
endif
endfor
if (! isempty (ll))
if (!isempty (lm))
toberm = [toberm, line("xdata",[0,0],"ydata",[0,0], "color", get(lm,"color"), "linestyle", get(ll,"linestyle"), "marker", get(lm,"marker"), "markeredgecolor", get(lm,"markeredgecolor"), "markerfacecolor", get(lm,"markerfacecolor"), "markersize", get (lm, "markersize"), "displayname", displayname, "parent", kids(i))];
else
toberm = [toberm, line("xdata",[0,0],"ydata",[0,0], "color", get(ll,"color"), "linestyle", get(ll,"linestyle"), "marker", "none", "displayname", displayname, "parent", kids(i))];
endif
elseif (! isempty (lm))
toberm = [toberm, line("xdata",[0,0],"ydata",[0,0], "color", get(lm,"color"), "linestyle", "none", "marker", get(lm,"marker"), "markeredgecolor", get(lm,"markeredgecolor"), "markerfacecolor", get(lm,"markerfacecolor"), "markersize", get (lm, "markersize"), "displayname", displayname, "parent", kids(i))];
endif
endfor
if (bg_is_set)
fprintf (plot_stream, "set border linecolor rgb \"#%02x%02x%02x\"\n", 255 * (1 - bg));
endif
__go_draw_axes__ (kids(i), plot_stream, enhanced, mono,
bg_is_set, false, hlgnd);
unwind_protect_cleanup
## Return axes "units" and "position" back to
## their original values.
set (ca, "units", orig_axes_units);
set (kids(i), "units", legend_axes_units,
"box", legend_axes_box,
"ylim", legend_axes_ylim,
"position", legend_axes_position,
"outerposition", legend_axes_outerposition);
delete (toberm);
bg_is_set = false;
end_unwind_protect
endif
else
## Rely upon listener to convert axes position
## to "normalized" units.
orig_axes_units = get (kids(i), "units");
orig_axes_position = get (kids(i), "position");
unwind_protect
set (kids(i), "units", "normalized");
fg = get (kids(i), "color");
if (isnumeric (fg) && strcmp (get (kids(i), "visible"), "on"))
fprintf (plot_stream, "set obj 2 rectangle from graph 0,0 to graph 1,1 behind fc rgb \"#%02x%02x%02x\"\n", 255 * fg);
fg_is_set = true;
fg_was_set = true;
elseif (fg_was_set)
fprintf (plot_stream, "unset obj 2\n");
fg_is_set = false;
fg_was_set = false;
else
fg_is_set = false;
endif
if (bg_is_set)
fprintf (plot_stream, "set border linecolor rgb \"#%02x%02x%02x\"\n", 255 * (1 - bg));
endif
## Find if this axes has an associated legend axes and pass it
## to __go_draw_axes__
hlegend = [];
fkids = get (h, "children");
for j = 1 : numel (fkids)
if (ishandle (fkids (j))
&& strcmp (get (fkids (j), "type"), "axes")
&& (strcmp (get (fkids (j), "tag"), "legend")))
udata = get (fkids (j), "userdata");
if (isscalar (udata.handle)
&& ! isempty (intersect (udata.handle, kids (i))))
hlegend = get (fkids (j));
break;
endif
endif
endfor
__go_draw_axes__ (kids(i), plot_stream, enhanced, mono,
bg_is_set, fg_is_set, hlegend);
unwind_protect_cleanup
## Return axes "units" and "position" back to
## their original values.
set (kids(i), "units", orig_axes_units);
set (kids(i), "position", orig_axes_position);
bg_is_set = false;
fg_is_set = false;
end_unwind_protect
endif
case "uimenu"
## ignore uimenu objects
kids(i) = [];
otherwise
error ("__go_draw_figure__: unknown object class, %s", type);
endswitch
endfor
if (isempty (kids))
fputs (plot_stream, "\nreset; clear;\n");
fflush (plot_stream);
else
fputs (plot_stream, "\nunset multiplot;\n");
endif
else
fputs (plot_stream, "\nreset; clear;\n");
fflush (plot_stream);
endif
else
error ("__go_draw_figure__: expecting figure object, found '%s'",
htype);
endif
endfunction
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