Add system proxy setting to global settings

Fix #3841

src/app/app.cpp

@@ -7,6 +7,7 @@
 #include <QSettings>
 #include <QMessageBox>
 #include <QQuickWindow>
+#include <QNetworkProxyFactory>
 #include <easylogging++.h>
 #include <qredisclient/redisclient.h>
 
@@ -102,6 +103,12 @@ void Application::initAppFonts()
     QApplication::setFont(defaultFont);
 }
 
+void Application::initProxySettings()
+{
+    QSettings settings;
+    QNetworkProxyFactory::setUseSystemConfiguration(settings.value("app/useSystemProxy", false).toBool());
+}
+
 void Application::registerQmlTypes()
 {    
     qmlRegisterType<SortFilterProxyModel>("rdm.models", 1, 0, "SortFilterProxyModel");        

src/app/app.h

@@ -30,7 +30,8 @@ public:
 
 private:
     void initAppInfo();
-    void initAppFonts();    
+    void initAppFonts();
+    void initProxySettings();
     void registerQmlTypes();
     void registerQmlRootObjects();
     void initLog();

src/qml/GlobalSettings.qml

@@ -59,6 +59,17 @@ Dialog {
                 description: qsTr("Application restart is needed to apply this setting.")
             }
 
+            BoolOption {
+                id: systemProxy
+
+                Layout.fillWidth: true
+                Layout.preferredHeight: 40
+
+                value: false
+                label: qsTr("Use system proxy settings")
+                description: qsTr("Application restart is needed to apply this setting.")
+            }
+
             Text {
                 text: qsTr("Connections Tree")
                 font.pixelSize: 18
@@ -110,8 +121,7 @@ Dialog {
                 value: 10
                 label: qsTr("Live update interval (in seconds)")
                 description: ""
-            }
-
+            }               
 
             Text {
                 text: qsTr("Custom Value View Formatters")
@@ -170,6 +180,7 @@ Dialog {
         property alias appFont: appFont.value
         property alias appFontSize: appFontSize.value
         property alias locale: appLang.value
+        property alias useSystemProxy: systemProxy.value
     }
 
     Settings {