feat(settings): add an option to toggle identicons

Solves #4741

Adds a setting to User Interface tab that allows to toggle displaying
identicons instead of default avatar picture.

src/persistence/profile.cpp

@@ -395,11 +395,17 @@ QPixmap Profile::loadAvatar()
 QPixmap Profile::loadAvatar(const ToxPk& owner)
 {
     QPixmap pic;
-    const QByteArray avataData = loadAvatarData(owner);
-    if(avataData.isEmpty()) {
-        pic = QPixmap::fromImage(Identicon(owner.getKey()).toImage(16));
+    if (Settings::getInstance().getShowIdenticons()) {
+
+        const QByteArray avataData = loadAvatarData(owner);
+        if (avataData.isEmpty()) {
+            pic = QPixmap::fromImage(Identicon(owner.getKey()).toImage(16));
+        } else {
+            pic.loadFromData(avataData);
+        }
+    
     } else {
-        pic.loadFromData(avataData);
+        pic.loadFromData(loadAvatarData(owner));
     }
 
     return pic;
@@ -467,12 +473,18 @@ void Profile::setAvatar(QByteArray pic, const ToxPk& owner)
         pixmap.loadFromData(pic);
         avatarData = pic;
     } else {
-        // with IDENTICON_ROWS=5 this gives a 160x160 image file
-        const QImage identicon = Identicon(owner.getKey()).toImage(32);
-        pixmap = QPixmap::fromImage(identicon);
-        QBuffer buf(&avatarData);
-        buf.open(QIODevice::WriteOnly);
-        identicon.save(&buf, "png");
+        if (Settings::getInstance().getShowIdenticons()) {
+            // with IDENTICON_ROWS=5 this gives a 160x160 image file
+            const QImage identicon = Identicon(owner.getKey()).toImage(32);
+            pixmap = QPixmap::fromImage(identicon);
+            QBuffer buf(&avatarData);
+            buf.open(QIODevice::WriteOnly);
+            identicon.save(&buf, "png");
+            
+        } else {
+            pixmap.load(":/img/contact_dark.svg");
+        }
+
     }
 
     saveAvatar(avatarData, owner);

src/persistence/settings.cpp

@@ -211,6 +211,7 @@ void Settings::loadGlobal()
         groupchatPosition = s.value("groupchatPosition", true).toBool();
         separateWindow = s.value("separateWindow", false).toBool();
         dontGroupWindows = s.value("dontGroupWindows", false).toBool();
+        showIdenticons = s.value("showIdenticons", true).toBool();
 
         const QString DEFAULT_SMILEYS = ":/smileys/emojione/emoticons.xml";
         smileyPack = s.value("smileyPack", DEFAULT_SMILEYS).toString();
@@ -526,6 +527,7 @@ void Settings::saveGlobal()
         s.setValue("separateWindow", separateWindow);
         s.setValue("dontGroupWindows", dontGroupWindows);
         s.setValue("groupchatPosition", groupchatPosition);
+        s.setValue("showIdenticons", showIdenticons);
 
         s.setValue("smileyPack", smileyPack);
         s.setValue("emojiFontPointSize", emojiFontPointSize);
@@ -2191,6 +2193,22 @@ void Settings::setGroupchatPosition(bool value)
     }
 }
 
+bool Settings::getShowIdenticons() const
+{
+    const QMutexLocker locker{&bigLock};
+    return showIdenticons;
+}
+
+void Settings::setShowIdenticons(bool value)
+{
+    const QMutexLocker locker{&bigLock};
+
+    if (value != showIdenticons) {
+        showIdenticons = value;
+        emit showIdenticonsChanged(value);
+    }
+}
+
 int Settings::getCircleCount() const
 {
     return circleLst.size();

src/persistence/settings.h

@@ -75,6 +75,8 @@ class Settings : public QObject, public ICoreSettings, public IAudioSettings, pu
     Q_PROPERTY(QString style READ getStyle WRITE setStyle NOTIFY styleChanged FINAL)
     Q_PROPERTY(bool showSystemTray READ getShowSystemTray WRITE setShowSystemTray NOTIFY
                    showSystemTrayChanged FINAL)
+    Q_PROPERTY(bool showIdenticons READ getShowIdenticons WRITE setShowIdenticons NOTIFY
+                   showIdenticonsChanged FINAL)
 
     // ChatView
     Q_PROPERTY(bool groupchatPosition READ getGroupchatPosition WRITE setGroupchatPosition NOTIFY
@@ -209,6 +211,7 @@ signals:
     void styleChanged(const QString& style);
     void themeColorChanged(int color);
     void compactLayoutChanged(bool enabled);
+    void showIdenticonsChanged(bool enabled);
 
     // ChatView
     void useEmoticonsChanged(bool enabled);
@@ -499,9 +502,12 @@ public:
 
     bool getDontGroupWindows() const;
     void setDontGroupWindows(bool value);
-
+    
     bool getGroupchatPosition() const;
     void setGroupchatPosition(bool value);
+    
+    bool getShowIdenticons() const;
+    void setShowIdenticons(bool value);
 
     bool getAutoLogin() const;
     void setAutoLogin(bool state);
@@ -566,6 +572,7 @@ private:
     bool groupchatPosition;
     bool separateWindow;
     bool dontGroupWindows;
+    bool showIdenticons;
     bool enableIPv6;
     QString translation;
     bool makeToxPortable;

src/widget/form/settings/userinterfaceform.cpp

@@ -87,6 +87,7 @@ UserInterfaceForm::UserInterfaceForm(SettingsWidget* myParent)
     bodyUI->cbSeparateWindow->setChecked(s.getSeparateWindow());
     bodyUI->cbDontGroupWindows->setChecked(s.getDontGroupWindows());
     bodyUI->cbDontGroupWindows->setEnabled(s.getSeparateWindow());
+    bodyUI->cbShowIdenticons->setChecked(s.getShowIdenticons());
 
     bodyUI->useEmoticons->setChecked(s.getUseEmoticons());
     for (auto entry : SmileyPack::listSmileyPacks())
@@ -298,6 +299,11 @@ void UserInterfaceForm::on_cbGroupchatPosition_stateChanged()
     Settings::getInstance().setGroupchatPosition(bodyUI->cbGroupchatPosition->isChecked());
 }
 
+void UserInterfaceForm::on_cbShowIdenticons_stateChanged()
+{
+    Settings::getInstance().setShowIdenticons(bodyUI->cbShowIdenticons->isChecked());
+}
+
 void UserInterfaceForm::on_themeColorCBox_currentIndexChanged(int)
 {
     int index = bodyUI->themeColorCBox->currentIndex();

src/widget/form/settings/userinterfaceform.h

@@ -56,6 +56,7 @@ private slots:
     void on_cbDontGroupWindows_stateChanged();
     void on_cbGroupchatPosition_stateChanged();
     void on_themeColorCBox_currentIndexChanged(int);
+    void on_cbShowIdenticons_stateChanged();
 
     void on_txtChatFont_currentFontChanged(const QFont& f);
     void on_txtChatFontSize_valueChanged(int arg1);

src/widget/form/settings/userinterfacesettings.ui

@@ -257,6 +257,16 @@
             </item>
            </layout>
           </item>
+          <item>
+           <widget class="QCheckBox" name="cbShowIdenticons">
+            <property name="toolTip">
+             <string comment="toolTip for show identicons">If enabled every contact without an avatar set will have a generated avatar based on their Tox ID instead of a default picture. Requires restart to apply.</string>
+            </property>
+            <property name="text">
+             <string>Use identicons instead of empty avatars</string>
+            </property>
+           </widget>
+          </item>
          </layout>
         </widget>
        </item>