X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=CreaPhase.git;a=blobdiff_plain;f=octave_packages%2Fm%2Fplot%2Fwhitebg.m;fp=octave_packages%2Fm%2Fplot%2Fwhitebg.m;h=a0810ae99dcacb5190d0ebe52c34a33c699d846f;hp=0000000000000000000000000000000000000000;hb=1c0469ada9531828709108a4882a751d2816994a;hpb=63de9f36673d49121015e3695f2c336ea92bc278

diff --git a/octave_packages/m/plot/whitebg.m b/octave_packages/m/plot/whitebg.m
new file mode 100644
index 0000000..a0810ae
--- /dev/null
+++ b/octave_packages/m/plot/whitebg.m
@@ -0,0 +1,164 @@
+## Copyright (C) 2010-2012 David Bateman
+##
+## 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} {} whitebg ()
+## @deftypefnx {Function File} {} whitebg (@var{color})
+## @deftypefnx {Function File} {} whitebg ("none")
+## @deftypefnx {Function File} {} whitebg (@var{fig})
+## @deftypefnx {Function File} {} whitebg (@var{fig}, @var{color})
+## @deftypefnx {Function File} {} whitebg (@var{fig}, "none")
+## Invert the colors in the current color scheme.  The root properties are
+## also inverted such that all subsequent plot use the new color scheme.
+##
+## If defined, @var{fig} is the handle to the figure to be inverted.  In
+## this case only the specified figure has its color properties changed.
+##
+## If the optional argument @var{color} is present then the background color
+## is set to @var{color} rather than inverted.  @var{color} may be a string
+## representing one of the eight known colors or an RGB triplet.  The special
+## string argument "none" restores the plot to the default colors.
+## @seealso{reset}
+## @end deftypefn
+
+function whitebg (varargin)
+  h = 0;
+  color = NaN;
+
+  if (nargin > 0 && nargin < 3)
+    if (ishandle (varargin{1}))
+      h = varargin{1};
+      if (nargin == 2)
+        color = varargin{2};
+      endif
+    elseif (nargin == 1)
+      color = varargin{1};
+    else
+      print_usage ();
+    endif
+  elseif (nargin != 0)
+    print_usage ();
+  endif
+
+  typ = get (h, "type");
+
+  if (strcmp (typ, "root"))
+    isroot = true;
+    fig = gcf ();
+  elseif (strcmp (typ, "figure"))
+    isroot = false;
+    fig = h;
+  else
+    error ("expecting a figure handle");
+  endif
+
+  axes = findall (fig, "type", "axes");
+  if (isnan (color))
+    ## Root figure. Set the default axes and figure properties so that
+    ## subsequent plots have the new color scheme
+    if (isroot)
+      fac = get (0, "factory");
+      fields = fieldnames (fac);
+      fieldindex = intersect (find (!cellfun ("isempty", regexp(fields, 'color'))), union (find (!cellfun ("isempty", regexp(fields, 'factoryaxes.*'))), find (!cellfun ("isempty", regexp(fields, 'factoryfigure.*')))));
+
+      ## Check whether the factory value has been replaced
+      for nf = 1 : numel (fieldindex);
+        defaultfield = strrep (fields {fieldindex (nf)}, "factory", "default");
+        try
+          defaultvalue = 1 - get (0, defaultfield {n});
+        catch
+          field = fields {fieldindex (nf)};
+          defaultvalue = 1 - subsref (fac, struct ("type", ".", "subs", field));
+        end_try_catch
+        set (0, defaultfield, defaultvalue);
+      endfor
+    endif
+
+    ## Load all objects which qualify for being searched.
+    handles = fig;
+    h = fig;
+    while (numel (handles))
+      children = [];
+      for n = 1 : numel (handles)
+        children = union (children, get(handles(n), "children"));
+      endfor
+      handles = children;
+      h = union (h, children);
+    endwhile
+
+    for nh = 1 : numel(h)
+      p = get (h (nh));
+      fields = fieldnames (p);
+      fieldindex = find (!cellfun ("isempty", regexp(fields, 'color')));
+      if (numel (fieldindex))
+        for nf = 1 : numel (fieldindex);
+          field = fields {fieldindex (nf)};
+          c = subsref (p, struct ("type", ".", "subs", field));
+          if (! ischar(c) && columns(c) == 3)
+            set (h (nh), field, 1 - c);
+          endif
+        endfor
+      endif
+
+      ## If h(nh) is a figure or axes invert default color properties
+      typ = subsref (p, struct ("type", ".", "subs", "type"));
+      if (strcmp (typ, "axes") || strcmp (typ, "figure"))
+        def = get (h (nh), "default");
+        fields = fieldnames (def);
+        if (! isempty (fields))
+          fieldindex = find (!cellfun ("isempty", regexp(fields, 'color')));
+          for nf = 1 : numel (fieldindex)
+            defaultfield = fields {fieldindex (nf)};
+            defaultvalue = 1 - subsref (def, struct ("type", ".", "subs", defaultfield));
+            set (h (nh), defaultfield, defaultvalue);
+          endfor
+        endif
+      endif
+    endfor
+  else
+    ## FIXME
+    ## Is this the right thing to do in this case?
+    set (findall (fig, "type", "axes"), "color", color);
+    if (isroot)
+      defs = get (0, "default");
+      if (isfield (defs, "defaultaxescolor")
+          && strcmp (defs.defaultaxescolor, "none"))
+        set (0, "defaultaxescolor", color);
+      endif
+    endif
+  endif
+endfunction
+
+%!test
+%! dac = get (0, "defaultaxescolor");
+%! dfc = get (0, "defaultfigurecolor");
+%! hf = figure ("visible", "off");
+%! unwind_protect
+%!   l = line;
+%!   assert (get (hf, "color"), dfc);
+%!   assert (get (gca, "color"), dac);
+%!   whitebg (hf);
+%!   assert (get (hf, "color"), 1 - dfc);
+%!   assert (get (gca, "color"), 1 - dac);
+%!   c = [0.2 0.2 0.2];
+%!   whitebg (hf, c);
+%!   assert (get (hf, "color"), 1 - dfc);
+%!   assert (get (gca, "color"), c);
+%! unwind_protect_cleanup
+%!   close (hf);
+%! end_unwind_protect