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1 | /* | |
2 | * This file is part of the PulseView project. | |
3 | * | |
4 | * Copyright (C) 2017 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 | #include "globalsettings.hpp" | |
21 | ||
22 | #include <QApplication> | |
23 | #include <QByteArray> | |
24 | #include <QFontMetrics> | |
25 | #include <QString> | |
26 | ||
27 | using std::function; | |
28 | using std::map; | |
29 | using std::multimap; | |
30 | ||
31 | namespace pv { | |
32 | ||
33 | const QString GlobalSettings::Key_View_ZoomToFitDuringAcq = "View_ZoomToFitDuringAcq"; | |
34 | const QString GlobalSettings::Key_View_ZoomToFitAfterAcq = "View_ZoomToFitAfterAcq"; | |
35 | const QString GlobalSettings::Key_View_TriggerIsZeroTime = "View_TriggerIsZeroTime"; | |
36 | const QString GlobalSettings::Key_View_ColouredBG = "View_ColouredBG"; | |
37 | const QString GlobalSettings::Key_View_StickyScrolling = "View_StickyScrolling"; | |
38 | const QString GlobalSettings::Key_View_ShowSamplingPoints = "View_ShowSamplingPoints"; | |
39 | const QString GlobalSettings::Key_View_ShowAnalogMinorGrid = "View_ShowAnalogMinorGrid"; | |
40 | const QString GlobalSettings::Key_View_ConversionThresholdDispMode = "View_ConversionThresholdDispMode"; | |
41 | const QString GlobalSettings::Key_View_DefaultDivHeight = "View_DefaultDivHeight"; | |
42 | const QString GlobalSettings::Key_View_DefaultLogicHeight = "View_DefaultLogicHeight"; | |
43 | const QString GlobalSettings::Key_Dec_InitialStateConfigurable = "Dec_InitialStateConfigurable"; | |
44 | ||
45 | multimap< QString, function<void(QVariant)> > GlobalSettings::callbacks_; | |
46 | bool GlobalSettings::tracking_ = false; | |
47 | map<QString, QVariant> GlobalSettings::tracked_changes_; | |
48 | ||
49 | GlobalSettings::GlobalSettings() : | |
50 | QSettings() | |
51 | { | |
52 | beginGroup("Settings"); | |
53 | } | |
54 | ||
55 | void GlobalSettings::set_defaults_where_needed() | |
56 | { | |
57 | // Enable zoom-to-fit after acquisition by default | |
58 | if (!contains(Key_View_ZoomToFitAfterAcq)) | |
59 | setValue(Key_View_ZoomToFitAfterAcq, true); | |
60 | ||
61 | // Enable coloured trace backgrounds by default | |
62 | if (!contains(Key_View_ColouredBG)) | |
63 | setValue(Key_View_ColouredBG, true); | |
64 | ||
65 | // Enable showing sampling points by default | |
66 | if (!contains(Key_View_ShowSamplingPoints)) | |
67 | setValue(Key_View_ShowSamplingPoints, true); | |
68 | ||
69 | if (!contains(Key_View_DefaultDivHeight)) | |
70 | setValue(Key_View_DefaultDivHeight, | |
71 | 3 * QFontMetrics(QApplication::font()).height()); | |
72 | ||
73 | if (!contains(Key_View_DefaultLogicHeight)) | |
74 | setValue(Key_View_DefaultLogicHeight, | |
75 | 2 * QFontMetrics(QApplication::font()).height()); | |
76 | } | |
77 | ||
78 | void GlobalSettings::register_change_handler(const QString key, | |
79 | function<void(QVariant)> cb) | |
80 | { | |
81 | callbacks_.emplace(key, cb); | |
82 | } | |
83 | ||
84 | void GlobalSettings::setValue(const QString &key, const QVariant &value) | |
85 | { | |
86 | // Save previous value if we're tracking changes, | |
87 | // not altering an already-existing saved setting | |
88 | if (tracking_) | |
89 | tracked_changes_.emplace(key, QSettings::value(key)); | |
90 | ||
91 | QSettings::setValue(key, value); | |
92 | ||
93 | // Call all registered callbacks for this key | |
94 | auto range = callbacks_.equal_range(key); | |
95 | ||
96 | for (auto it = range.first; it != range.second; it++) | |
97 | it->second(value); | |
98 | } | |
99 | ||
100 | void GlobalSettings::start_tracking() | |
101 | { | |
102 | tracking_ = true; | |
103 | tracked_changes_.clear(); | |
104 | } | |
105 | ||
106 | void GlobalSettings::stop_tracking() | |
107 | { | |
108 | tracking_ = false; | |
109 | tracked_changes_.clear(); | |
110 | } | |
111 | ||
112 | void GlobalSettings::undo_tracked_changes() | |
113 | { | |
114 | tracking_ = false; | |
115 | ||
116 | for (auto entry : tracked_changes_) | |
117 | setValue(entry.first, entry.second); | |
118 | ||
119 | tracked_changes_.clear(); | |
120 | } | |
121 | ||
122 | void GlobalSettings::store_gvariant(QSettings &settings, GVariant *v) | |
123 | { | |
124 | const GVariantType *var_type = g_variant_get_type(v); | |
125 | char *var_type_str = g_variant_type_dup_string(var_type); | |
126 | ||
127 | QByteArray var_data = QByteArray((const char*)g_variant_get_data(v), | |
128 | g_variant_get_size(v)); | |
129 | ||
130 | settings.setValue("value", var_data); | |
131 | settings.setValue("type", var_type_str); | |
132 | ||
133 | g_free(var_type_str); | |
134 | } | |
135 | ||
136 | GVariant* GlobalSettings::restore_gvariant(QSettings &settings) | |
137 | { | |
138 | QString raw_type = settings.value("type").toString(); | |
139 | GVariantType *var_type = g_variant_type_new(raw_type.toUtf8()); | |
140 | ||
141 | QByteArray data = settings.value("value").toByteArray(); | |
142 | ||
143 | gpointer var_data = g_memdup((gconstpointer)data.constData(), | |
144 | (guint)data.size()); | |
145 | ||
146 | GVariant *value = g_variant_new_from_data(var_type, var_data, | |
147 | data.size(), false, g_free, var_data); | |
148 | ||
149 | g_variant_type_free(var_type); | |
150 | ||
151 | return value; | |
152 | } | |
153 | ||
154 | ||
155 | } // namespace pv |