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comparison src/dldfcn/__init_gnuplot__.cc @ 15076:000587f92082

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rename src/DLD-FUNCTIONS directory to src/dldfcn * src/dldfcn: Rename from src/DLD-FUNCTIONS. * autogen.sh, src/Makefile.am, src/dldfcn/config-module.awk, src/dldfcn/config-module.sh: Change all uses of DLD-FUNCTIONS to be dldfcn. Change all uses of DLD_FUNCTIONS to be DLDFCN.
author John W. Eaton <jwe@octave.org>
date Tue, 31 Jul 2012 21:57:58 -0400
parents src/DLD-FUNCTIONS/__init_gnuplot__.cc@72c96de7a403
children
comparison
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15075:b62b0b85369c 15076:000587f92082
1 /*
2
3 Copyright (C) 2007-2012 John W. Eaton
4
5 This file is part of Octave.
6
7 Octave is free software; you can redistribute it and/or modify it
8 under the terms of the GNU General Public License as published by the
9 Free Software Foundation; either version 3 of the License, or (at your
10 option) any later version.
11
12 Octave is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15 for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with Octave; see the file COPYING. If not, see
19 <http://www.gnu.org/licenses/>.
20
21 */
22
23 /*
24
25 To initialize:
26
27 graphics_toolkit ("gnuplot");
28 plot (randn (1e3, 1));
29
30 */
31
32 #ifdef HAVE_CONFIG_H
33 #include <config.h>
34 #endif
35
36 #include "defun-dld.h"
37 #include "error.h"
38 #include "graphics.h"
39 #include "parse.h"
40 #include "variables.h"
41
42 // PKG_ADD: register_graphics_toolkit ("gnuplot");
43
44 static bool toolkit_loaded = false;
45
46 class gnuplot_graphics_toolkit : public base_graphics_toolkit
47 {
48 public:
49 gnuplot_graphics_toolkit (void)
50 : base_graphics_toolkit ("gnuplot") { }
51
52 ~gnuplot_graphics_toolkit (void) { }
53
54 bool is_valid (void) const { return true; }
55
56 bool initialize (const graphics_object& go)
57 {
58 return go.isa ("figure");
59 }
60
61 void finalize (const graphics_object& go)
62 {
63 if (go.isa ("figure"))
64 {
65 const figure::properties& props =
66 dynamic_cast<const figure::properties&> (go.get_properties ());
67
68 send_quit (props.get___plot_stream__ ());
69 }
70 }
71
72 void update (const graphics_object& go, int id)
73 {
74 if (go.isa ("figure"))
75 {
76 graphics_object obj (go);
77
78 figure::properties& props =
79 dynamic_cast<figure::properties&> (obj.get_properties ());
80
81 switch (id)
82 {
83 case base_properties::ID_VISIBLE:
84 if (! props.is_visible ())
85 {
86 send_quit (props.get___plot_stream__ ());
87 props.set___plot_stream__ (Matrix ());
88 props.set___enhanced__ (false);
89 }
90 break;
91 }
92 }
93 }
94
95 void redraw_figure (const graphics_object& go) const
96 {
97 octave_value_list args;
98 args(0) = go.get_handle ().as_octave_value ();
99 feval ("__gnuplot_drawnow__", args);
100 }
101
102 void print_figure (const graphics_object& go, const std::string& term,
103 const std::string& file, bool mono,
104 const std::string& debug_file) const
105 {
106 octave_value_list args;
107 if (! debug_file.empty ())
108 args(4) = debug_file;
109 args(3) = mono;
110 args(2) = file;
111 args(1) = term;
112 args(0) = go.get_handle ().as_octave_value ();
113 feval ("__gnuplot_drawnow__", args);
114 }
115
116 Matrix get_canvas_size (const graphics_handle&) const
117 {
118 Matrix sz (1, 2, 0.0);
119 return sz;
120 }
121
122 double get_screen_resolution (void) const
123 { return 72.0; }
124
125 Matrix get_screen_size (void) const
126 { return Matrix (1, 2, 0.0); }
127
128 void close (void)
129 {
130 if (toolkit_loaded)
131 {
132 munlock ("__init_gnuplot__");
133
134 gtk_manager::unload_toolkit ("gnuplot");
135
136 toolkit_loaded = false;
137 }
138 }
139
140 private:
141
142 void send_quit (const octave_value& pstream) const
143 {
144 if (! pstream.is_empty ())
145 {
146 octave_value_list args;
147 Matrix fids = pstream.matrix_value ();
148
149 if (! error_state)
150 {
151 args(1) = "\nquit;\n";
152 args(0) = fids(0);
153 feval ("fputs", args);
154
155 args.resize (1);
156 feval ("fflush", args);
157 feval ("pclose", args);
158
159 if (fids.numel () > 1)
160 {
161 args(0) = fids(1);
162 feval ("pclose", args);
163
164 if (fids.numel () > 2)
165 {
166 args(0) = fids(2);
167 feval ("waitpid", args);
168 }
169 }
170 }
171 }
172 }
173 };
174
175 // Initialize the fltk graphics toolkit.
176
177 DEFUN_DLD (__init_gnuplot__, , , "")
178 {
179 octave_value retval;
180
181 if (! toolkit_loaded)
182 {
183 mlock ();
184
185 graphics_toolkit tk (new gnuplot_graphics_toolkit ());
186 gtk_manager::load_toolkit (tk);
187
188 toolkit_loaded = true;
189 }
190
191 return retval;
192 }
193