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annotate src/display.h @ 13983:7dd7cccf0757

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clean up memory allocated for singletons before exit * singleton-cleanup.h, singleton-cleanup.cc: New files. * liboctave/Makefile.am (INCS, LIBOCTAVE_CXX_SOURCES): Add them to the lists. * toplev.cc (clean_up_and_exit): Call singleton_cleanup_list::cleanup. * debug.h, debug.cc (bp_table::instance_ok): Move definition to debug.cc. * coment-list.h (octave_comment_buffer::~octave_comment_buffer): Define destructor for class. * ov-typeinfo.h (octave_value_typeinfo::~octave_value_typeinfo): Likewise. * cmd-edit.h (command_editor::cleanup_instance): New function. * cmd-hist.h (command_history::cleanup_instance): New function. * file-ops.h (file_ops::cleanup_instance): New function. * mach-info.h (oct_mach_info::cleanup_instance): New function. * oct-env.h (octave_env::cleanup_instance): New function. * oct-fftw.h (octave_fftw_planner::cleanup_instance): New function. * oct-rand.h (octave_rand::cleanup_instance): New function. * oct-spparms.h (octave_sparse_params::cleanup_instance): New function. * pathsearch.h (static_members::cleanup_instance): New function. * comment-list.h (octave_comment_buffer::cleanup_instance): New function. * debug.h (bp_table::cleanup_instance): New function. * display.h (display_info::cleanup_instance): New function. * dynamic-ld.cc (octave_shlib_list::cleanup_instance, octave_mex_file_list::cleanup_instance): New functions. * dynamic-ld.h (octave_dynamic_loader::cleanup_instance): New function. * load-path.h (load_path::cleanup_instance): New function. * oct-stream.h (octave_stream_list::cleanup_instance): New function. * ov-typeinfo.h (octave_value_typeinfo::cleanup_instance): New function. * pager.h, pager.cc (octave_pager_stream::instance_ok, octave_pager_stream::cleanup_instance): New functions. (octave_diary_stream::instance_ok, octave_diary_stream::cleanup_instance): New functions. * sighandlers.h (octave_child_list::cleanup_instance): New function. * toplev.h (octave_call_stack * pager.cc (octave_pager_stream::stream, octave_diary_stream::stream): Use instance_ok to create instance. * toplev.h (octave_call_stack::cleanup_instance): New function. * cmd-edit.cc (command_editor::instance_ok): Register cleanup function. * cmd-hist.cc (command_history::instance_ok): Likewise. * file-ops.cc (file_ops::instance_ok): Likewise. * mach-info.cc (oct_mach_info::instance_ok): Likewise. * oct-env.cc (octave_env::instance_ok): Likewise. * oct-fftw.cc (octave_fftw_planner::instance_ok): Likewise. * oct-rand.cc (octave_rand::instance_ok): Likewise. * oct-spparms.cc (octave_sparse_params::instance_ok): Likewise. * pathsearch.cc (dir_path::static_members::instance_ok): Likewise. * comment-list.cc (comment_list::instance_ok): Likewise. * debug.cc (bp_table::instance_ok): Likewise. * display.cc (display_info::instance_ok): Likewise. * dynamic-ld.cc (octave_shlib_list::instance_ok, octave_mex_file_list::instance_ok, octave_dynamic_loader): Likewise. * load-path.cc (load_path::instance_ok): Likewise. * oct-stream.cc (octave_stream_list::instance_ok): Likewise. * ov-typeinfo.cc (octave_value_typeinfo::instance_ok): Likewise. * sighandlers.cc (octave_child_list::instance_ok): Likewise. * symtab.h, symtab.cc (symbol_table::scope_id::create_instance): New function. * symtab.h (symbol_table::scope_id::instance_ok): Call create_instance. * toplev.h, toplev.cc (octave_call_stack::create_instance): New function. * toplev.cc (octave_call_stack::instance_ok): Call create_instance. * pager.h, pager.cc (octave_pager_stream::set_diary_skip, octave_pager_stream::flush_current_contents_to_diary): Now static. octave_pager_stream::do_set_diary_skip, octave_pager_stream::do_flush_current_contents_to_diary): New functions. (octave_pager_stream::stream): Return std::ostream&, not octave_pager_stream&. If instance creation fails, return std::cout. (octave_diary_stream::stream): Return std::ostream&, not octave_diary_stream&. If instance creation fails, return std::cout. (octave_pager_stream::do_reset, octave_diary_stream::do_reset): Use instance_ok to create instance.
author John W. Eaton <jwe@octave.org>
date Sat, 03 Dec 2011 04:34:17 -0500
parents fd0a3ac60b0e
children 72c96de7a403
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1 /*
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2
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3 Copyright (C) 2009-2011 John W. Eaton
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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 #if !defined (octave_display_h)
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24 #define octave_display_h 1
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25
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26 class Matrix;
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27
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28 class display_info
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29 {
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30 protected:
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31
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32 display_info (bool query = true)
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33 : ht (1), wd (1), dp (0), rx (72), ry (72)
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34 {
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35 init (query);
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36 }
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37
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38 public:
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39
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40 static int height (void)
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41 {
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42 return instance_ok () ? instance->do_height () : 0;
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43 }
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44
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45 static int width (void)
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46 {
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47 return instance_ok () ? instance->do_width () : 0;
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48 }
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49
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50 static int depth (void)
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51 {
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52 return instance_ok () ? instance->do_depth () : 0;
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53 }
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54
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55 static double x_dpi (void)
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56 {
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57 return instance_ok () ? instance->do_x_dpi () : 0;
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58 }
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59
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60 static double y_dpi (void)
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61 {
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62 return instance_ok () ? instance->do_y_dpi () : 0;
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63 }
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64
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65 // To disable querying the window system for defaults, this function
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66 // must be called before any other display_info function.
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67 static void no_window_system (void)
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68 {
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69 instance_ok (false);
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70 }
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71
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72 private:
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73
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74 static display_info *instance;
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75
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76 static void cleanup_instance (void) { delete instance; instance = 0; }
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77
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78 // Height, width, and depth of the display.
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79 int ht;
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80 int wd;
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81 int dp;
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82
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83 // X- and Y- Resolution of the display in dots (pixels) per inch.
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84 double rx;
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85 double ry;
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86
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87 int do_height (void) const { return ht; }
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88 int do_width (void) const { return wd; }
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89 int do_depth (void) const { return dp; }
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90
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91 double do_x_dpi (void) const { return rx; }
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92 double do_y_dpi (void) const { return ry; }
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93
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94 void init (bool query = true);
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95
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96 static bool instance_ok (bool query = true);
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97 };
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98
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99 #endif