# HG changeset patch
# User costerwisch@costerwisch-lt1
# Date 1372186113 14400
# Node ID 78a2f43bbc69c3b6e54688c96171fe83851c8c21
# Parent  e6ddaa65a77713029bdf87128f5697dd6e11a372
Implemented line color and style rotation across multiple axes (bug #39344).

diff -r e6ddaa65a777 -r 78a2f43bbc69 scripts/plot/private/__next_line_color__.m
--- a/scripts/plot/private/__next_line_color__.m	Tue Jul 09 17:37:26 2013 -0700
+++ b/scripts/plot/private/__next_line_color__.m	Tue Jun 25 14:48:33 2013 -0400
@@ -23,32 +23,31 @@
 
 ## Return the next line color in the rotation.
 
-## Author: jwe
+## Author: Carl Osterwisch
 
 function rgb = __next_line_color__ (reset)
 
-  persistent color_rotation;
-  persistent num_colors;
-  persistent color_index;
+  persistent reset_colors = true;
 
   if (nargin < 2)
     if (nargin == 1)
-      if (reset || isempty (color_rotation))
-        color_rotation = get (gca (), "colororder");
-        num_colors = rows (color_rotation);
+      % Indicates whether the next call will increment or not
+      reset_colors = reset;
+    else
+      % Find and return the next line color
+      ca = gca();
+      colorOrder = get(ca, "ColorOrder");
+      if reset_colors
         color_index = 1;
+      else
+        % Executed when "hold all" is active
+        nChildren = length(get(ca, "Children"));
+        nColors = rows(colorOrder);
+        color_index = mod(nChildren, nColors) + 1;
       endif
-    elseif (! isempty (color_rotation))
-      rgb = color_rotation(color_index,:);
-      if (++color_index > num_colors)
-        color_index = 1;
-        __next_line_style__ ("incr");
-      endif
-    else
-      error ("__next_line_color__: color_rotation not initialized");
+      rgb = colorOrder(color_index,:);
     endif
   else
     print_usage ();
   endif
-
 endfunction
diff -r e6ddaa65a777 -r 78a2f43bbc69 scripts/plot/private/__next_line_style__.m
--- a/scripts/plot/private/__next_line_style__.m	Tue Jul 09 17:37:26 2013 -0700
+++ b/scripts/plot/private/__next_line_style__.m	Tue Jun 25 14:48:33 2013 -0400
@@ -26,36 +26,34 @@
 
 function [linestyle, marker] = __next_line_style__ (reset)
 
-  persistent style_rotation;
-  persistent num_styles;
-  persistent style_index;
+  persistent reset_style = true;
 
   if (nargin < 2)
     if (nargin == 1)
-      if (ischar (reset) && strncmp (reset, "incr", 4))
-        if (isempty (style_rotation))
-          error ("__next_line_style__: style_rotation not initialized");
-        elseif (++style_index > num_styles)
-          style_index = 1;
-        endif
-      elseif (reset || isempty (style_rotation))
-        style_rotation = get (gca (), "linestyleorder");
-        if (ischar (style_rotation))
-          style_rotation = ostrsplit (style_rotation, "|");
-        endif
-        num_styles = length (style_rotation);
+      % Indicates whether the next call will increment or not
+      reset_style = reset;
+    else
+      % Find and return the next line style
+      ca = gca();
+      style_rotation = get (ca, "linestyleorder");
+      if (ischar (style_rotation))
+        style_rotation = strsplit (style_rotation, "|");
+      endif
+      nStyles = length (style_rotation);
+      if reset_style || (nStyles < 2)
         style_index = 1;
+      else
+        % Executed when "hold all" is active
+        nChildren = length(get(ca, "Children"));
+        nColors = length(get(ca, "ColorOrder"));
+        style_index = mod(floor(nChildren/nColors), nStyles) + 1;
       endif
-    elseif (! isempty (style_rotation))
       options = __pltopt__ ("__next_line_style__",
                             style_rotation (style_index));
       linestyle = options.linestyle;
       marker = options.marker;
-    else
-      error ("__next_line_style__: style_rotation not initialized");
     endif
   else
     print_usage ();
   endif
-
 endfunction