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annotate libgui/graphics/Backend.h @ 27316:22265a75be74

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eliminate static instance of Qt graphics ObjectFactory class * Backend.h, Backend.cc (Backend::m_factory): New member variable. Backend object now owns the ObjectFactory. (Backend::Backend): Create ObjectFactory here. (Backend::~Backend): Delete it. * ObjectFactory.h, ObjectFactory.cc (ObjectFactory::instance): Delete. (ObjectFactory::ObjectFactory): Now public.
author John W. Eaton <jwe@octave.org>
date Tue, 30 Jul 2019 15:00:54 -0500
parents 07b330708e3c
children
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1 /*
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2
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3 Copyright (C) 2011-2019 Michael Goffioul
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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
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9 the Free Software Foundation, either version 3 of the License, or
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10 (at your 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
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License 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 <https://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_Backend_h)
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24 #define octave_Backend_h 1
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25
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26 #include <QObject>
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27
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28 #include "event-manager.h"
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29 #include "graphics.h"
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30
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31 namespace octave
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32 {
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33 class interpreter;
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34 }
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35
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36 namespace QtHandles
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37 {
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38 class Object;
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39 class ObjectFactory;
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40 class ObjectProxy;
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41
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42 class Backend :
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43 public QObject,
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44 public base_graphics_toolkit
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45 {
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46 Q_OBJECT
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47
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48 public:
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49
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50 Backend (octave::interpreter& interp);
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51
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52 ~Backend (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 void redraw_figure (const graphics_object& h) const;
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57
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58 void show_figure (const graphics_object& h) const;
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59
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60 void update (const graphics_object& obj, int pId);
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61
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62 bool initialize (const graphics_object& obj);
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63
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64 void finalize (const graphics_object& obj);
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65
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66 void print_figure (const graphics_object& go,
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67 const std::string& term,
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68 const std::string& file_cmd,
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69 const std::string& /*debug_file*/) const;
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70
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71 uint8NDArray get_pixels (const graphics_object& go) const;
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73 Matrix get_text_extent (const graphics_object& go) const;
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74
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75 static Object * toolkitObject (const graphics_object& go);
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76
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77 static ObjectProxy * toolkitObjectProxy (const graphics_object& go);
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78
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79 signals:
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80 void createObject (Backend *, double handle);
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81
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82 public slots:
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83
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84 void interpreter_event (const octave::fcn_callback& fcn);
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85 void interpreter_event (const octave::meth_callback& meth);
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86
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87 private:
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88
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89 octave::interpreter& m_interpreter;
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90
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91 ObjectFactory *m_factory;
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92 };
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93
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94 }
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95
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96 #endif