pv/globalsettings.cpp

   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 <QColor>
  24 #include <QDebug>
  25 #include <QFontMetrics>
  26 #include <QString>
  27
  28 using std::map;
  29 using std::string;
  30 using std::vector;
  31
  32 namespace pv {
  33
  34 const QString GlobalSettings::Key_View_ZoomToFitDuringAcq = "View_ZoomToFitDuringAcq";
  35 const QString GlobalSettings::Key_View_ZoomToFitAfterAcq = "View_ZoomToFitAfterAcq";
  36 const QString GlobalSettings::Key_View_TriggerIsZeroTime = "View_TriggerIsZeroTime";
  37 const QString GlobalSettings::Key_View_ColoredBG = "View_ColoredBG";
  38 const QString GlobalSettings::Key_View_StickyScrolling = "View_StickyScrolling";
  39 const QString GlobalSettings::Key_View_ShowSamplingPoints = "View_ShowSamplingPoints";
  40 const QString GlobalSettings::Key_View_FillSignalHighAreas = "View_FillSignalHighAreas";
  41 const QString GlobalSettings::Key_View_FillSignalHighAreaColor = "View_FillSignalHighAreaColor";
  42 const QString GlobalSettings::Key_View_ShowAnalogMinorGrid = "View_ShowAnalogMinorGrid";
  43 const QString GlobalSettings::Key_View_ConversionThresholdDispMode = "View_ConversionThresholdDispMode";
  44 const QString GlobalSettings::Key_View_DefaultDivHeight = "View_DefaultDivHeight";
  45 const QString GlobalSettings::Key_View_DefaultLogicHeight = "View_DefaultLogicHeight";
  46 const QString GlobalSettings::Key_View_ShowHoverMarker = "View_ShowHoverMarker";
  47 const QString GlobalSettings::Key_View_SnapDistance = "View_SnapDistance";
  48 const QString GlobalSettings::Key_Dec_InitialStateConfigurable = "Dec_InitialStateConfigurable";
  49 const QString GlobalSettings::Key_Dec_ExportFormat = "Dec_ExportFormat";
  50 const QString GlobalSettings::Key_Log_BufferSize = "Log_BufferSize";
  51 const QString GlobalSettings::Key_Log_NotifyOfStacktrace = "Log_NotifyOfStacktrace";
  52
  53 vector<GlobalSettingsInterface*> GlobalSettings::callbacks_;
  54 bool GlobalSettings::tracking_ = false;
  55 map<QString, QVariant> GlobalSettings::tracked_changes_;
  56
  57 GlobalSettings::GlobalSettings() :
  58         QSettings()
  59 {
  60         beginGroup("Settings");
  61 }
  62
  63 void GlobalSettings::set_defaults_where_needed()
  64 {
  65         // Enable zoom-to-fit after acquisition by default
  66         if (!contains(Key_View_ZoomToFitAfterAcq))
  67                 setValue(Key_View_ZoomToFitAfterAcq, true);
  68
  69         // Enable colored trace backgrounds by default
  70         if (!contains(Key_View_ColoredBG))
  71                 setValue(Key_View_ColoredBG, true);
  72
  73         // Enable showing sampling points by default
  74         if (!contains(Key_View_ShowSamplingPoints))
  75                 setValue(Key_View_ShowSamplingPoints, true);
  76
  77         // Enable filling logic signal high areas by default
  78         if (!contains(Key_View_FillSignalHighAreas))
  79                 setValue(Key_View_FillSignalHighAreas, true);
  80         if (!contains(Key_View_FillSignalHighAreaColor))
  81                 setValue(Key_View_FillSignalHighAreaColor,
  82                         QColor(0, 0, 0, 5 * 256 / 100).rgba());
  83
  84         if (!contains(Key_View_DefaultDivHeight))
  85                 setValue(Key_View_DefaultDivHeight,
  86                 3 * QFontMetrics(QApplication::font()).height());
  87
  88         if (!contains(Key_View_DefaultLogicHeight))
  89                 setValue(Key_View_DefaultLogicHeight,
  90                 2 * QFontMetrics(QApplication::font()).height());
  91
  92         if (!contains(Key_View_SnapDistance))
  93                 setValue(Key_View_SnapDistance, 15);
  94
  95         if (!contains(Key_Dec_ExportFormat))
  96                 setValue(Key_Dec_ExportFormat, "%s %d: %c: %1");
  97
  98         // Default to 500 lines of backlog
  99         if (!contains(Key_Log_BufferSize))
 100                 setValue(Key_Log_BufferSize, 500);
 101
 102         // Notify user of existing stack trace by default
 103         if (!contains(Key_Log_NotifyOfStacktrace))
 104                 setValue(Key_Log_NotifyOfStacktrace, true);
 105 }
 106
 107 void GlobalSettings::add_change_handler(GlobalSettingsInterface *cb)
 108 {
 109         callbacks_.push_back(cb);
 110 }
 111
 112 void GlobalSettings::remove_change_handler(GlobalSettingsInterface *cb)
 113 {
 114         for (auto cb_it = callbacks_.begin(); cb_it != callbacks_.end(); cb_it++)
 115                 if (*cb_it == cb) {
 116                         callbacks_.erase(cb_it);
 117                         break;
 118                 }
 119 }
 120
 121 void GlobalSettings::setValue(const QString &key, const QVariant &value)
 122 {
 123         // Save previous value if we're tracking changes,
 124         // not altering an already-existing saved setting
 125         if (tracking_)
 126                 tracked_changes_.emplace(key, QSettings::value(key));
 127
 128         QSettings::setValue(key, value);
 129
 130         // TODO Emulate noquote()
 131         qDebug() << "Setting" << key << "changed to" << value;
 132
 133         // Call all registered callbacks
 134         for (GlobalSettingsInterface *cb : callbacks_)
 135                 cb->on_setting_changed(key, value);
 136 }
 137
 138 void GlobalSettings::start_tracking()
 139 {
 140         tracking_ = true;
 141         tracked_changes_.clear();
 142 }
 143
 144 void GlobalSettings::stop_tracking()
 145 {
 146         tracking_ = false;
 147         tracked_changes_.clear();
 148 }
 149
 150 void GlobalSettings::undo_tracked_changes()
 151 {
 152         tracking_ = false;
 153
 154         for (auto entry : tracked_changes_)
 155                 setValue(entry.first, entry.second);
 156
 157         tracked_changes_.clear();
 158 }
 159
 160 void GlobalSettings::store_gvariant(QSettings &settings, GVariant *v)
 161 {
 162         const GVariantType *var_type = g_variant_get_type(v);
 163         char *var_type_str = g_variant_type_dup_string(var_type);
 164
 165         QByteArray var_data = QByteArray((const char*)g_variant_get_data(v),
 166                 g_variant_get_size(v));
 167
 168         settings.setValue("value", var_data);
 169         settings.setValue("type", var_type_str);
 170
 171         g_free(var_type_str);
 172 }
 173
 174 GVariant* GlobalSettings::restore_gvariant(QSettings &settings)
 175 {
 176         QString raw_type = settings.value("type").toString();
 177         GVariantType *var_type = g_variant_type_new(raw_type.toUtf8());
 178
 179         QByteArray data = settings.value("value").toByteArray();
 180
 181         gpointer var_data = g_memdup((gconstpointer)data.constData(),
 182                 (guint)data.size());
 183
 184         GVariant *value = g_variant_new_from_data(var_type, var_data,
 185                 data.size(), false, g_free, var_data);
 186
 187         g_variant_type_free(var_type);
 188
 189         return value;
 190 }
 191
 192 void GlobalSettings::store_variantbase(QSettings &settings, Glib::VariantBase v)
 193 {
 194         const QByteArray var_data = QByteArray((const char*)v.get_data(), v.get_size());
 195
 196         settings.setValue("value", var_data);
 197         settings.setValue("type", QString::fromStdString(v.get_type_string()));
 198 }
 199
 200 Glib::VariantBase GlobalSettings::restore_variantbase(QSettings &settings)
 201 {
 202         QString raw_type = settings.value("type").toString();
 203         GVariantType *var_type = g_variant_type_new(raw_type.toUtf8());
 204
 205         QByteArray data = settings.value("value").toByteArray();
 206
 207         gpointer var_data = g_memdup((gconstpointer)data.constData(),
 208                 (guint)data.size());
 209
 210         GVariant *value = g_variant_new_from_data(var_type, var_data,
 211                 data.size(), false, g_free, var_data);
 212
 213         Glib::VariantBase ret_val = Glib::VariantBase(value, true);
 214
 215         g_variant_type_free(var_type);
 216         g_variant_unref(value);
 217
 218         return ret_val;
 219 }
 220
 221 } // namespace pv