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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 <QFontMetrics> | |
24 | #include <QString> | |
25 | ||
26 | using std::map; | |
27 | using std::vector; | |
28 | ||
29 | namespace pv { | |
30 | ||
31 | const QString GlobalSettings::Key_View_ZoomToFitDuringAcq = "View_ZoomToFitDuringAcq"; | |
32 | const QString GlobalSettings::Key_View_ZoomToFitAfterAcq = "View_ZoomToFitAfterAcq"; | |
33 | const QString GlobalSettings::Key_View_TriggerIsZeroTime = "View_TriggerIsZeroTime"; | |
34 | const QString GlobalSettings::Key_View_ColouredBG = "View_ColouredBG"; | |
35 | const QString GlobalSettings::Key_View_StickyScrolling = "View_StickyScrolling"; | |
36 | const QString GlobalSettings::Key_View_ShowSamplingPoints = "View_ShowSamplingPoints"; | |
37 | const QString GlobalSettings::Key_View_ShowAnalogMinorGrid = "View_ShowAnalogMinorGrid"; | |
38 | const QString GlobalSettings::Key_View_ConversionThresholdDispMode = "View_ConversionThresholdDispMode"; | |
39 | const QString GlobalSettings::Key_View_DefaultDivHeight = "View_DefaultDivHeight"; | |
40 | const QString GlobalSettings::Key_View_DefaultLogicHeight = "View_DefaultLogicHeight"; | |
41 | const QString GlobalSettings::Key_Dec_InitialStateConfigurable = "Dec_InitialStateConfigurable"; | |
42 | ||
43 | vector<GlobalSettingsInterface*> GlobalSettings::callbacks_; | |
44 | bool GlobalSettings::tracking_ = false; | |
45 | map<QString, QVariant> GlobalSettings::tracked_changes_; | |
46 | ||
47 | GlobalSettings::GlobalSettings() : | |
48 | QSettings() | |
49 | { | |
50 | beginGroup("Settings"); | |
51 | } | |
52 | ||
53 | void GlobalSettings::set_defaults_where_needed() | |
54 | { | |
55 | // Enable zoom-to-fit after acquisition by default | |
56 | if (!contains(Key_View_ZoomToFitAfterAcq)) | |
57 | setValue(Key_View_ZoomToFitAfterAcq, true); | |
58 | ||
59 | // Enable coloured trace backgrounds by default | |
60 | if (!contains(Key_View_ColouredBG)) | |
61 | setValue(Key_View_ColouredBG, true); | |
62 | ||
63 | // Enable showing sampling points by default | |
64 | if (!contains(Key_View_ShowSamplingPoints)) | |
65 | setValue(Key_View_ShowSamplingPoints, true); | |
66 | ||
67 | if (!contains(Key_View_DefaultDivHeight)) | |
68 | setValue(Key_View_DefaultDivHeight, | |
69 | 3 * QFontMetrics(QApplication::font()).height()); | |
70 | ||
71 | if (!contains(Key_View_DefaultLogicHeight)) | |
72 | setValue(Key_View_DefaultLogicHeight, | |
73 | 2 * QFontMetrics(QApplication::font()).height()); | |
74 | } | |
75 | ||
76 | void GlobalSettings::add_change_handler(GlobalSettingsInterface *cb) | |
77 | { | |
78 | callbacks_.push_back(cb); | |
79 | } | |
80 | ||
81 | void GlobalSettings::remove_change_handler(GlobalSettingsInterface *cb) | |
82 | { | |
83 | for (auto cb_it = callbacks_.begin(); cb_it != callbacks_.end(); cb_it++) | |
84 | if (*cb_it == cb) { | |
85 | callbacks_.erase(cb_it); | |
86 | break; | |
87 | } | |
88 | } | |
89 | ||
90 | void GlobalSettings::setValue(const QString &key, const QVariant &value) | |
91 | { | |
92 | // Save previous value if we're tracking changes, | |
93 | // not altering an already-existing saved setting | |
94 | if (tracking_) | |
95 | tracked_changes_.emplace(key, QSettings::value(key)); | |
96 | ||
97 | QSettings::setValue(key, value); | |
98 | ||
99 | // Call all registered callbacks | |
100 | for (GlobalSettingsInterface *cb : callbacks_) | |
101 | cb->on_setting_changed(key, value); | |
102 | } | |
103 | ||
104 | void GlobalSettings::start_tracking() | |
105 | { | |
106 | tracking_ = true; | |
107 | tracked_changes_.clear(); | |
108 | } | |
109 | ||
110 | void GlobalSettings::stop_tracking() | |
111 | { | |
112 | tracking_ = false; | |
113 | tracked_changes_.clear(); | |
114 | } | |
115 | ||
116 | void GlobalSettings::undo_tracked_changes() | |
117 | { | |
118 | tracking_ = false; | |
119 | ||
120 | for (auto entry : tracked_changes_) | |
121 | setValue(entry.first, entry.second); | |
122 | ||
123 | tracked_changes_.clear(); | |
124 | } | |
125 | ||
126 | void GlobalSettings::store_gvariant(QSettings &settings, GVariant *v) | |
127 | { | |
128 | const GVariantType *var_type = g_variant_get_type(v); | |
129 | char *var_type_str = g_variant_type_dup_string(var_type); | |
130 | ||
131 | QByteArray var_data = QByteArray((const char*)g_variant_get_data(v), | |
132 | g_variant_get_size(v)); | |
133 | ||
134 | settings.setValue("value", var_data); | |
135 | settings.setValue("type", var_type_str); | |
136 | ||
137 | g_free(var_type_str); | |
138 | } | |
139 | ||
140 | GVariant* GlobalSettings::restore_gvariant(QSettings &settings) | |
141 | { | |
142 | QString raw_type = settings.value("type").toString(); | |
143 | GVariantType *var_type = g_variant_type_new(raw_type.toUtf8()); | |
144 | ||
145 | QByteArray data = settings.value("value").toByteArray(); | |
146 | ||
147 | gpointer var_data = g_memdup((gconstpointer)data.constData(), | |
148 | (guint)data.size()); | |
149 | ||
150 | GVariant *value = g_variant_new_from_data(var_type, var_data, | |
151 | data.size(), false, g_free, var_data); | |
152 | ||
153 | g_variant_type_free(var_type); | |
154 | ||
155 | return value; | |
156 | } | |
157 | ||
158 | ||
159 | } // namespace pv |