octave-lyh: scripts/plot/__gnuplot_drawnow_

comparison scripts/plot/__gnuplot_drawnow__.m @ 12301:3eb4049b5393 release-3-4-x

rename gnuplot_drawnow to __gnuplot_drawnow__

author	John W. Eaton <jwe@octave.org>
date	Sun, 30 Jan 2011 04:22:39 -0500
parents	scripts/plot/gnuplot_drawnow.m@b0084095098e
children	5236c9518f88 b265b592c796

comparison

equal deleted inserted replaced

-:d1ab54dcec38
+:3eb4049b5393
+## Copyright (C) 2005-2011 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} {} __gnuplot_drawnow__ (@var{h}, @var{term}, @var{file}, @var{mono}, @var{debug_file})
+## Undocumented internal function.
+## @end deftypefn
+## Author: jwe
+function __gnuplot_drawnow__ (h, term, file, mono, debug_file)
+if (nargin < 4)
+mono = false;
+endif
+if (nargin >= 3 && nargin <= 5)
+## Produce various output formats, or redirect gnuplot stream to a
+## debug file.
+plot_stream = [];
+fid = [];
+default_plot_stream = get (h, "__plot_stream__");
+unwind_protect
+plot_stream = __gnuplot_open_stream__ (2, h);
+gnuplot_supports_term = __gnuplot_has_terminal__ (term, plot_stream);
+if (gnuplot_supports_term)
+enhanced = gnuplot_set_term (plot_stream (1), true, h, term, file);
+__go_draw_figure__ (h, plot_stream(1), enhanced, mono);
+if (nargin == 5)
+fid = fopen (debug_file, "wb");
+enhanced = gnuplot_set_term (fid, true, h, term, file);
+__go_draw_figure__ (h, fid, enhanced, mono);
+endif
+else
+error ("__gnuplot_drawnow__: the gnuplot terminal, \"%s\", is not available",
+gnuplot_trim_term (term));
+endif
+unwind_protect_cleanup
+set (h, "__plot_stream__", default_plot_stream);
+if (! isempty (plot_stream))
+pclose (plot_stream(1));
+if (numel (plot_stream) > 1)
+pclose (plot_stream(2));
+endif
+if (numel (plot_stream) > 2)
+waitpid (plot_stream(3));
+endif
+endif
+if (! isempty (fid))
+fclose (fid);
+endif
+end_unwind_protect
+elseif (nargin == 1)
+##  Graphics terminal for display.
+plot_stream = get (h, "__plot_stream__");
+if (isempty (plot_stream))
+plot_stream = __gnuplot_open_stream__ (2, h);
+new_stream = true;
+else
+new_stream = false;
+endif
+term = gnuplot_default_term ();
+if (strcmp (term, "dumb"))
+## popen2 eats stdout of gnuplot, use temporary file instead
+dumb_tmp_file = tmpnam ();
+enhanced = gnuplot_set_term (plot_stream (1), new_stream, h, ...
+term, dumb_tmp_file);
+else
+enhanced = gnuplot_set_term (plot_stream (1), new_stream, h, term);
+endif
+__go_draw_figure__ (h, plot_stream (1), enhanced, mono);
+fflush (plot_stream (1));
+if (strcmp (term, "dumb"))
+fid = -1;
+while (fid < 0)
+pause (0.1);
+fid = fopen (dumb_tmp_file, 'r');
+endwhile
+## reprint the plot on screen
+[a, count] = fscanf (fid, '%c', Inf);
+fclose (fid);
+if (count>0)
+if (a(1)==12)
+## avoid ^L at the beginning
+a = a(2:end);
+endif
+puts (a);
+endif
+unlink (dumb_tmp_file);
+endif
+else
+print_usage ();
+endif
+endfunction
+function enhanced = gnuplot_set_term (plot_stream, new_stream, h, term, file)
+## Generate the gnuplot "set terminal <term> ..." command.
+## When "term" originates from print.m, it may include other options.
+if (nargin < 4)
+## This supports the gnuplot graphics toolkit.
+term = gnuplot_default_term ();
+opts_str = "";
+else
+## Get the one word terminal id and save the remaining as options to
+## be passed on to gnuplot.  The terminal may respect the graphics
+## toolkit.
+[term, opts_str] = gnuplot_trim_term (term);
+term = lower (term);
+if (strcmpi (term, "lua"))
+## Replace "lau tikz" with
+term = "tikz";
+opts_str = strrep (opts_str, "tikz", "");
+endif
+endif
+if (strfind (opts_str, "noenhanced"))
+enhanced = false;
+else
+enhanced = gnuplot_is_enhanced_term (term);
+endif
+## Set the terminal.
+if (! isempty (term))
+if (enhanced)
+enh_str = "enhanced";
+else
+enh_str = "";
+endif
+if (! isempty (h) && isfigure (h))
+## Generate gnuplot title string for plot windows.
+if (output_to_screen (term) && ~strcmp (term, "dumb"))
+fig.numbertitle = get (h, "numbertitle");
+fig.name = get (h, "name");
+if (strcmpi (get (h, "numbertitle"), "on"))
+title_str = sprintf ("Figure %d", h);
+else
+title_str = "";
+endif
+if (! isempty (fig.name) && ! isempty (title_str))
+title_str = sprintf ("%s: %s", title_str, fig.name);
+elseif (! isempty (fig.name) && isempty (title_str))
+title_str = fig.name;
+endif
+if (! isempty (title_str))
+title_str = sprintf ("title \"%s\"", title_str);
+endif
+if (strcmp (term, "aqua"))
+## Adjust axes-label and tick-label spacing.
+opts_str = sprintf ("%s font \"%s,%d\"", opts_str,
+get (0, "defaultaxesfontname"),
+get (0, "defaultaxesfontsize") / 1.5);
+endif
+else
+title_str = "";
+endif
+if (! (any (strfind (opts_str, " size ") > 0)
+|| any (strfind (opts_str, "size ") == 1)))
+## Get figure size in pixels.  Rely on listener to handle coversion.
+units = get (h, "units");
+unwind_protect
+set (h, "units", "pixels");
+position_in_pixels = get (h, "position");
+unwind_protect_cleanup
+set (h, "units", units);
+end_unwind_protect
+gnuplot_pos = position_in_pixels(1:2);
+gnuplot_size = position_in_pixels(3:4);
+if (! (output_to_screen (term)
+|| any (strcmp (term, {"emf", "gif", "jpeg", "pbm", "png", ...
+"pngcairo", "svg"}))))
+## Convert to inches
+gnuplot_pos = gnuplot_pos / 72;
+gnuplot_size = gnuplot_size / 72;
+endif
+if (all (gnuplot_size > 0))
+terminals_with_size = {"canvas", "emf", "epslatex", "fig", ...
+"gif", "jpeg", "latex", "pbm", "pdf", ...
+"pdfcairo", "postscript", "png", "pngcairo", ...
+"pstex", "pslatex", "svg", "tikz"};
+if (__gnuplot_has_feature__ ("x11_figure_position"))
+terminals_with_size{end+1} = "x11";
+endif
+if (__gnuplot_has_feature__ ("wxt_figure_size"))
+terminals_with_size{end+1} = "wxt";
+endif
+switch (term)
+case terminals_with_size
+size_str = sprintf ("size %g,%g", gnuplot_size);
+case "tikz"
+size_str = sprintf ("size %gin,%gin", gnuplot_size);
+case "dumb"
+new_stream = 1;
+if (~isempty (getenv ("COLUMNS")) && ~isempty (getenv ("LINES")))
+## Let dumb use full text screen size (minus prompt lines).
+n = sprintf ("%i", -2 - length (find (sprintf ("%s", PS1) == "\n")));
+## n = the number of times \n appears in PS1
+size_str = ["size ", getenv("COLUMNS"), ",", getenv("LINES"), n];
+else
+## Use the gnuplot default.
+size_str = "";
+endif
+case {"aqua", "fig", "corel"}
+size_str = sprintf ("size %g %g", gnuplot_size);
+case "dxf"
+size_str = "";
+otherwise
+size_str = "";
+endswitch
+if (strncmpi (term, "x11", 3)
+&& __gnuplot_has_feature__ ("x11_figure_position"))
+## X11 allows the window to be positioned as well.
+units = get (0, "units");
+unwind_protect
+set (0, "units", "pixels");
+screen_size = get (0, "screensize")(3:4);
+unwind_protect_cleanup
+set (0, "units", units);
+end_unwind_protect
+if (all (screen_size > 0))
+## For X11, set the figure positon as well as the size
+## gnuplot position is UL, Octave's is LL (same for screen/window)
+gnuplot_pos(2) = screen_size(2) - gnuplot_pos(2) - gnuplot_size(2);
+gnuplot_pos = max (gnuplot_pos, 1);
+size_str = sprintf ("%s position %d,%d", size_str,
+gnuplot_pos(1), gnuplot_pos(2));
+endif
+endif
+else
+size_str = "";
+warning ("gnuplot_set_term: size is zero");
+endif
+else
+## A specified size take priority over the figure properies.
+size_str = "";
+endif
+else
+if isempty (h)
+disp ("gnuplot_set_term: figure handle is empty");
+elseif !isfigure(h)
+disp ("gnuplot_set_term: not a figure handle");
+endif
+title_str = "";
+size_str = "";
+endif
+## Set the gnuplot terminal (type, enhanced, title, options & size).
+term_str = sprintf ("set terminal %s", term);
+if (! isempty (enh_str))
+term_str = sprintf ("%s %s", term_str, enh_str);
+endif
+if (! isempty (title_str))
+term_str = sprintf ("%s %s", term_str, title_str);
+endif
+if (isempty (strfind (term, "corel")))
+if (! isempty (size_str) && new_stream)
+## size_str comes after other options to permit specification of
+## the canvas size for terminals cdr/corel.
+term_str = sprintf ("%s %s", term_str, size_str);
+endif
+if (nargin > 3 && ischar (opts_str))
+## Options must go last.
+term_str = sprintf ("%s %s", term_str, opts_str);
+endif
+else
+if (nargin > 3 && ischar (opts_str))
+## Options must go last.
+term_str = sprintf ("%s %s", term_str, opts_str);
+endif
+if (! isempty (size_str) && new_stream)
+## size_str comes after other options to permit specification of
+## the canvas size for terminals cdr/corel.
+term_str = sprintf ("%s %s", term_str, size_str);
+endif
+endif
+## Work around the gnuplot feature of growing the x11 window and
+## flickering window (x11, windows, & wxt) when the mouse and
+## multiplot are set in gnuplot.
+fputs (plot_stream, "unset multiplot;\n");
+flickering_terms = {"x11", "windows", "wxt", "dumb"};
+if (! any (strcmp (term, flickering_terms))
+|| have_non_legend_axes (h)
+|| numel (findall (h, "type", "image")) > 0)
+fprintf (plot_stream, "%s\n", term_str);
+if (nargin == 5)
+if (! isempty (file))
+fprintf (plot_stream, "set output '%s';\n", file);
+endif
+endif
+fputs (plot_stream, "set multiplot;\n");
+elseif (any (strcmp (term, flickering_terms)))
+fprintf (plot_stream, "%s\n", term_str);
+if (nargin == 5)
+if (! isempty (file))
+fprintf (plot_stream, "set output '%s';\n", file);
+endif
+endif
+endif
+else
+## gnuplot will pick up the GNUTERM environment variable itself
+## so no need to set the terminal type if not also setting the
+## figure title, enhanced mode, or position.
+endif
+endfunction
+function term = gnuplot_default_term ()
+term = getenv ("GNUTERM");
+## If not specified, guess the terminal type.
+if (isempty (term))
+if (ismac ())
+term = "aqua";
+elseif (! isunix ())
+term = "windows";
+elseif (! isempty (getenv ("DISPLAY")))
+term = "x11";
+else
+term = "dumb";
+endif
+endif
+endfunction
+function [term, opts] = gnuplot_trim_term (string)
+## Extract the terminal type and terminal options (from print.m)
+string = deblank (string);
+n = strfind (string, ' ');
+if (isempty (n))
+term = string;
+opts = "";
+else
+term = string(1:(n-1));
+opts = string((n+1):end);
+endif
+endfunction
+function have_enhanced = gnuplot_is_enhanced_term (term)
+persistent enhanced_terminals;
+if (isempty (enhanced_terminals))
+## Don't include pstex, pslatex or epslatex here as the TeX commands
+## should not be interpreted in that case.
+enhanced_terminals = {"aqua", "canvas", "dumb", "emf", "gif", "jpeg", ...
+"pdf", "pdfcairo", "pm", "png", "pngcairo", ...
+"postscript", "svg", "windows", "wxt", "x11"};
+endif
+if (nargin < 1)
+## Determine the default gnuplot terminal.
+term = gnuplot_default_term ();
+endif
+have_enhanced = any (strncmp (enhanced_terminals, term, min (numel (term), 3)));
+endfunction
+function ret = output_to_screen (term)
+ret = any (strcmpi ({"aqua", "dumb", "wxt", "x11", "windows", "pm"}, term));
+endfunction
+function retval = have_non_legend_axes (h)
+retval = false;
+all_axes = findall (h, "type", "axes");
+if (! isempty (all_axes))
+n_all_axes = numel (all_axes);
+all_axes_tags = get (all_axes, "tag");
+legend_axes = strcmp (all_axes_tags, "legend");
+if (! isempty (legend_axes))
+n_legend_axes = sum (legend_axes);
+retval = (n_all_axes - n_legend_axes) > 1;
+endif
+endif
+endfunction

Mercurial > hg > octave-lyh

comparison scripts/plot/__gnuplot_drawnow__.m @ 12301:3eb4049b5393 release-3-4-x