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annotate 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
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1 /*
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2
14138
72c96de7a403 maint: update copyright notices for 2012
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3 Copyright (C) 2007-2012 John W. Eaton
14021
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 /*
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24
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25 To initialize:
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26
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27 graphics_toolkit ("gnuplot");
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28 plot (randn (1e3, 1));
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29
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30 */
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31
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32 #ifdef HAVE_CONFIG_H
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33 #include <config.h>
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34 #endif
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35
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36 #include "defun-dld.h"
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37 #include "error.h"
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38 #include "graphics.h"
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39 #include "parse.h"
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40 #include "variables.h"
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41
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42 // PKG_ADD: register_graphics_toolkit ("gnuplot");
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43
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44 static bool toolkit_loaded = false;
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45
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46 class gnuplot_graphics_toolkit : public base_graphics_toolkit
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47 {
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48 public:
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49 gnuplot_graphics_toolkit (void)
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50 : base_graphics_toolkit ("gnuplot") { }
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51
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52 ~gnuplot_graphics_toolkit (void) { }
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53
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54 bool is_valid (void) const { return true; }
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55
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56 bool initialize (const graphics_object& go)
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57 {
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58 return go.isa ("figure");
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59 }
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60
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61 void finalize (const graphics_object& go)
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62 {
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63 if (go.isa ("figure"))
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64 {
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65 const figure::properties& props =
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66 dynamic_cast<const figure::properties&> (go.get_properties ());
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67
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68 send_quit (props.get___plot_stream__ ());
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69 }
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70 }
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71
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72 void update (const graphics_object& go, int id)
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73 {
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74 if (go.isa ("figure"))
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75 {
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76 graphics_object obj (go);
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77
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78 figure::properties& props =
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79 dynamic_cast<figure::properties&> (obj.get_properties ());
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80
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81 switch (id)
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82 {
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83 case base_properties::ID_VISIBLE:
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84 if (! props.is_visible ())
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85 {
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86 send_quit (props.get___plot_stream__ ());
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87 props.set___plot_stream__ (Matrix ());
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88 props.set___enhanced__ (false);
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89 }
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90 break;
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91 }
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92 }
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93 }
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94
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95 void redraw_figure (const graphics_object& go) const
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96 {
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97 octave_value_list args;
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98 args(0) = go.get_handle ().as_octave_value ();
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99 feval ("__gnuplot_drawnow__", args);
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100 }
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101
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102 void print_figure (const graphics_object& go, const std::string& term,
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103 const std::string& file, bool mono,
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104 const std::string& debug_file) const
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105 {
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106 octave_value_list args;
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107 if (! debug_file.empty ())
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108 args(4) = debug_file;
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109 args(3) = mono;
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110 args(2) = file;
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111 args(1) = term;
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112 args(0) = go.get_handle ().as_octave_value ();
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113 feval ("__gnuplot_drawnow__", args);
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114 }
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115
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116 Matrix get_canvas_size (const graphics_handle&) const
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117 {
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118 Matrix sz (1, 2, 0.0);
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119 return sz;
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120 }
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121
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122 double get_screen_resolution (void) const
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123 { return 72.0; }
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124
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125 Matrix get_screen_size (void) const
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126 { return Matrix (1, 2, 0.0); }
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127
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128 void close (void)
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129 {
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130 if (toolkit_loaded)
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131 {
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132 munlock ("__init_gnuplot__");
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133
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134 gtk_manager::unload_toolkit ("gnuplot");
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135
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136 toolkit_loaded = false;
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137 }
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138 }
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139
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140 private:
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141
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142 void send_quit (const octave_value& pstream) const
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143 {
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144 if (! pstream.is_empty ())
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145 {
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146 octave_value_list args;
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147 Matrix fids = pstream.matrix_value ();
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148
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149 if (! error_state)
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150 {
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151 args(1) = "\nquit;\n";
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152 args(0) = fids(0);
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153 feval ("fputs", args);
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154
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155 args.resize (1);
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156 feval ("fflush", args);
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157 feval ("pclose", args);
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158
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159 if (fids.numel () > 1)
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160 {
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161 args(0) = fids(1);
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162 feval ("pclose", args);
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163
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164 if (fids.numel () > 2)
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165 {
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166 args(0) = fids(2);
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167 feval ("waitpid", args);
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168 }
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169 }
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170 }
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171 }
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172 }
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173 };
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174
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175 // Initialize the fltk graphics toolkit.
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176
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177 DEFUN_DLD (__init_gnuplot__, , , "")
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178 {
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179 octave_value retval;
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180
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181 if (! toolkit_loaded)
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182 {
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183 mlock ();
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184
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185 graphics_toolkit tk (new gnuplot_graphics_toolkit ());
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186 gtk_manager::load_toolkit (tk);
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187
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188 toolkit_loaded = true;
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189 }
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190
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191 return retval;
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192 }
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193