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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2020 Soeren Apel <soeren@apelpie.net> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #ifndef PULSEVIEW_PV_METADATA_OBJ_HPP | |
21 | #define PULSEVIEW_PV_METADATA_OBJ_HPP | |
22 | ||
23 | #include <deque> | |
24 | #include <vector> | |
25 | ||
26 | #include <QObject> | |
27 | #include <QSettings> | |
28 | #include <QString> | |
29 | #include <QVariant> | |
30 | ||
31 | using std::deque; | |
32 | using std::vector; | |
33 | ||
34 | namespace pv { | |
35 | ||
36 | ||
37 | // When adding an entry here, don't forget to update MetadataObjectNames as well | |
38 | enum MetadataObjectType { | |
39 | MetadataObjMainViewRange, | |
40 | MetadataObjSelection, | |
41 | MetadataObjTimeMarker, | |
42 | MetadataObjectTypeCount // Indicates how many metadata object types there are, must always be last | |
43 | }; | |
44 | ||
45 | // When adding an entry here, don't forget to update MetadataValueNames as well | |
46 | enum MetadataValueType { | |
47 | MetadataValueStartSample, // int64_t / qlonglong | |
48 | MetadataValueEndSample, // int64_t / qlonglong | |
49 | MetadataValueText, | |
50 | MetadataValueTypeCount // Indicates how many metadata value types there are, must always be last | |
51 | }; | |
52 | ||
53 | extern const char* MetadataObjectNames[MetadataObjectTypeCount]; | |
54 | extern const char* MetadataValueNames[MetadataValueTypeCount]; | |
55 | ||
56 | ||
57 | class MetadataObjManager; | |
58 | class MetadataObject; | |
59 | ||
60 | ||
61 | class MetadataObjObserverInterface | |
62 | { | |
63 | public: | |
64 | virtual void on_metadata_object_created(MetadataObject* obj); | |
65 | virtual void on_metadata_object_deleted(MetadataObject* obj); | |
66 | virtual void on_metadata_object_changed(MetadataObject* obj, | |
67 | MetadataValueType value_type); | |
68 | }; | |
69 | ||
70 | ||
71 | class MetadataObject | |
72 | { | |
73 | public: | |
74 | MetadataObject(MetadataObjManager* obj_manager, uint32_t obj_id, MetadataObjectType obj_type); | |
75 | virtual ~MetadataObject() = default; | |
76 | ||
77 | virtual uint32_t id() const; | |
78 | virtual MetadataObjectType type() const; | |
79 | ||
80 | virtual void set_value(MetadataValueType value_type, const QVariant& value); | |
81 | virtual QVariant value(MetadataValueType value_type) const; | |
82 | private: | |
83 | MetadataObjManager* obj_manager_; | |
84 | uint32_t id_; | |
85 | MetadataObjectType type_; | |
86 | vector<QVariant> values_; | |
87 | }; | |
88 | ||
89 | ||
90 | class MetadataObjManager : public QObject | |
91 | { | |
92 | Q_OBJECT | |
93 | ||
94 | public: | |
95 | MetadataObject* create_object(MetadataObjectType obj_type); | |
96 | void delete_object(uint32_t obj_id); | |
97 | MetadataObject* find_object_by_type(MetadataObjectType obj_type); | |
98 | MetadataObject* object(uint32_t obj_id); | |
99 | ||
100 | void add_observer(MetadataObjObserverInterface *cb); | |
101 | void remove_observer(MetadataObjObserverInterface *cb); | |
102 | ||
103 | void save_objects(QSettings &settings) const; | |
104 | void restore_objects(QSettings &settings); | |
105 | ||
106 | void notify_observers(MetadataObject* obj, MetadataValueType changed_value); | |
107 | ||
108 | private: | |
109 | vector<MetadataObjObserverInterface*> callbacks_; | |
110 | deque<MetadataObject> objects_; | |
111 | }; | |
112 | ||
113 | ||
114 | } // namespace pv | |
115 | ||
116 | #endif // PULSEVIEW_PV_METADATA_OBJ_HPP |