Merge bitcoin-core/gui#309: Add access to the Peers tab from the network icon

d29ea72393 gui: Add access to the Peers tab from the network icon (Hennadii Stepanov)

Pull request description:

  This PR add a small context menu to the network activity icon that provides an access to the Peers tab:

  ![gui-network-icon](https://user-images.githubusercontent.com/32963518/116794314-d64b9b80-aad4-11eb-89ca-7f75c7442ba8.gif)

  Closes #93.

ACKs for top commit:
  Sjors:
    re-ACK d29ea72393
  kristapsk:
    re-ACK d29ea72393
  promag:
    Code review ACK d29ea72393.

Tree-SHA512: dd871415fe514a19c6a22100d58f31954d9e55b80585d5a3f26e17a8d51dadf912441786fc0d23beabd812f1b501658fec1dbe345cd41beae5832a8eda890f77

src/qt/bitcoingui.cpp

@@ -43,6 +43,7 @@
 #include <QAction>
 #include <QApplication>
 #include <QComboBox>
+#include <QCursor>
 #include <QDateTime>
 #include <QDragEnterEvent>
 #include <QListWidget>
@@ -199,9 +200,6 @@ BitcoinGUI::BitcoinGUI(interfaces::Node& node, const PlatformStyle *_platformSty
     // Subscribe to notifications from core
     subscribeToCoreSignals();
 
-    connect(connectionsControl, &GUIUtil::ClickableLabel::clicked, [this] {
-        m_node.setNetworkActive(!m_node.getNetworkActive());
-    });
     connect(labelProxyIcon, &GUIUtil::ClickableLabel::clicked, [this] {
         openOptionsDialogWithTab(OptionsDialog::TAB_NETWORK);
     });
@@ -586,7 +584,10 @@ void BitcoinGUI::setClientModel(ClientModel *_clientModel, interfaces::BlockAndH
         createTrayIconMenu();
 
         // Keep up to date with client
-        updateNetworkState();
+        setNetworkActive(m_node.getNetworkActive());
+        connect(connectionsControl, &GUIUtil::ClickableLabel::clicked, [this] {
+            GUIUtil::PopupMenu(m_network_context_menu, QCursor::pos());
+        });
         connect(_clientModel, &ClientModel::numConnectionsChanged, this, &BitcoinGUI::setNumConnections);
         connect(_clientModel, &ClientModel::networkActiveChanged, this, &BitcoinGUI::setNetworkActive);
 
@@ -915,14 +916,18 @@ void BitcoinGUI::updateNetworkState()
     QString tooltip;
 
     if (m_node.getNetworkActive()) {
-        tooltip = tr("%n active connection(s) to Bitcoin network", "", count) + QString(".<br>") + tr("Click to disable network activity.");
+        //: A substring of the tooltip.
+        tooltip = tr("%n active connection(s) to Bitcoin network.", "", count);
     } else {
-        tooltip = tr("Network activity disabled.") + QString("<br>") + tr("Click to enable network activity again.");
+        //: A substring of the tooltip.
+        tooltip = tr("Network activity disabled.");
         icon = ":/icons/network_disabled";
     }
 
     // Don't word-wrap this (fixed-width) tooltip
-    tooltip = QString("<nobr>") + tooltip + QString("</nobr>");
+    tooltip = QLatin1String("<nobr>") + tooltip + QLatin1String("<br>") +
+              //: A substring of the tooltip. "More actions" are available via the context menu.
+              tr("Click for more actions.") + QLatin1String("</nobr>");
     connectionsControl->setToolTip(tooltip);
 
     connectionsControl->setThemedPixmap(icon, STATUSBAR_ICONSIZE, STATUSBAR_ICONSIZE);
@@ -933,9 +938,24 @@ void BitcoinGUI::setNumConnections(int count)
     updateNetworkState();
 }
 
-void BitcoinGUI::setNetworkActive(bool networkActive)
+void BitcoinGUI::setNetworkActive(bool network_active)
 {
     updateNetworkState();
+    m_network_context_menu->clear();
+    m_network_context_menu->addAction(
+        //: A context menu item. The "Peers tab" is an element of the "Node window".
+        tr("Show Peers tab"),
+        [this] {
+            rpcConsole->setTabFocus(RPCConsole::TabTypes::PEERS);
+            showDebugWindow();
+        });
+    m_network_context_menu->addAction(
+        network_active ?
+            //: A context menu item.
+            tr("Disable network activity") :
+            //: A context menu item. The network activity was disabled previously.
+            tr("Enable network activity"),
+        [this, new_state = !network_active] { m_node.setNetworkActive(new_state); });
 }
 
 void BitcoinGUI::updateHeadersSyncProgressLabel()

src/qt/bitcoingui.h

@@ -17,6 +17,7 @@
 #include <QLabel>
 #include <QMainWindow>
 #include <QMap>
+#include <QMenu>
 #include <QPoint>
 #include <QSystemTrayIcon>
 
@@ -51,7 +52,6 @@ QT_BEGIN_NAMESPACE
 class QAction;
 class QComboBox;
 class QDateTime;
-class QMenu;
 class QProgressBar;
 class QProgressDialog;
 QT_END_NAMESPACE
@@ -175,6 +175,8 @@ private:
     HelpMessageDialog* helpMessageDialog = nullptr;
     ModalOverlay* modalOverlay = nullptr;
 
+    QMenu* m_network_context_menu = new QMenu(this);
+
 #ifdef Q_OS_MAC
     CAppNapInhibitor* m_app_nap_inhibitor = nullptr;
 #endif
@@ -222,7 +224,7 @@ public Q_SLOTS:
     /** Set number of connections shown in the UI */
     void setNumConnections(int count);
     /** Set network state shown in the UI */
-    void setNetworkActive(bool networkActive);
+    void setNetworkActive(bool network_active);
     /** Set number of blocks and last block date shown in the UI */
     void setNumBlocks(int count, const QDateTime& blockDate, double nVerificationProgress, bool headers, SynchronizationState sync_state);