Mercurial > octave
view scripts/plot/util/private/__gnuplot_draw_figure__.m @ 24498:5865d2fef424
legend.m: Clean up implementation.
* legend.m: Rename variable "fig" to "hfig" for clarity. Remove unnecessary
error() that should never happen (someone will always report it if it does).
Add more comments to try and explain code. Rename property "handle" to
"__axes_handle__" which points from legend to associated axes. Add new
property "__legend_handle__" to associated axes which points back to legend.
Replace complicated searches for an existing legend object with try/catch
block looking for "__legend_handle__" property. Remove redundanc code.
Rename "oldfig" to "origfig" for clarity. Rename "curaxes" to "origaxes"
for clarity. Important: Make new legend object's parent the same as the
parent of the associated axes. This makes legends work for things like uipanel,
not just figures. For performance, limit search for htdel text object to
a depth of 1.
* legend.m (cb_legend_update): Rename "handle" to "__axes_handle__". Remove
unnecessarily complicated code to get hplots from existing legend.
* legend.m (cb_restore_axes): Set "__legend_handle__" on associated axes
to [] when deleting legend.
* __getlegenddata__.m, axes.m: Rename property "handle" to "__axes_handle__".
* __errplot__.m: Remove unnecessary ancestor() call to find axes.
Replace search for legend with try/catch on "__legend_handle__" property.
* __plt__.m: Replace search for legend with try/catch on "__legend_handle__"
property.
* hdl2struct.m: Replace search for legend with try/catch on "__legend_handle__"
property. Replace search for colorbar with try/catch on "__colorbar_handle__"
* __gnuplot_draw_figure__.m: Rename property "handle" to "__axes_handle__".
Replace search for legend with try/catch on "__legend_handle__" property.
* __gnuplot_print__.m (get_figure_text): Simplify determination of legend,
it is just an axes object with tag set to legend.
author | Rik <rik@octave.org> |
---|---|
date | Wed, 03 Jan 2018 08:10:48 -0800 |
parents | 59041be1994b |
children | 194eb4bd202b |
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## Copyright (C) 2005-2017 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 {} {} __gnuplot_draw_figure__ (@var{h}, @var{plot_stream}, @var{enhanced}) ## Undocumented internal function. ## @end deftypefn ## Author: jwe function __gnuplot_draw_figure__ (h, plot_stream, enhanced) 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, ['if (GPVAL_TERM eq "qt") set obj 1 rectangle from screen 0,0 to screen 1,1 behind fc rgb "#%02x%02x%02x" fs solid noborder;' "\n"], round (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 (strcmp (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 = getappdata (kids(i), "__axes_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 (getappdata (hobj(j), "handle") != getappdata (hobj(k), "handle")) 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"], round (255 * (1 - bg))); endif __gnuplot_draw_axes__ (kids(i), plot_stream, enhanced, 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" fs solid noborder' "\n"], round (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"], round (255 * (1 - bg))); endif ## Find if this axes has an associated legend axes and pass it ## to __gnuplot_draw_axes__ try hlegend = get (kids(i), "__legend_handle__"); hlegend = get (hlegend); catch hlegend = []; end_try_catch __gnuplot_draw_axes__ (kids(i), plot_stream, enhanced, 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", "uicontextmenu"} ## ignore uimenu objects kids(i) = []; otherwise error ("__gnuplot_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 ("__gnuplot_draw_figure__: expecting figure object, found '%s'", htype); endif endfunction