GUI: Make Peers table aware of runtime palette change

This change fixes the GUI when changing appearance on macOS.

Author: luke-jr

src/qt/peertablemodel.cpp

@@ -136,6 +136,18 @@ void PeerTableModel::DrawIcons()
     m_icon_conn_out = m_platform_style.TextColorIcon(QIcon(QPixmap::fromImage(icon_out)));
 }
 
+void PeerTableModel::updatePalette()
+{
+    m_icon_conn_in  = m_platform_style.TextColorIcon(m_icon_conn_in);
+    m_icon_conn_out = m_platform_style.TextColorIcon(m_icon_conn_out);
+    if (m_peers_data.empty()) return;
+    Q_EMIT dataChanged(
+        createIndex(0, Direction),
+        createIndex(m_peers_data.size() - 1, Direction),
+        QVector<int>{Qt::DecorationRole}
+    );
+}
+
 void PeerTableModel::startAutoRefresh()
 {
     timer->start();

src/qt/peertablemodel.h

@@ -76,6 +76,7 @@ class PeerTableModel : public QAbstractTableModel
 
 public Q_SLOTS:
     void refresh();
+    void updatePalette();
 
 Q_SIGNALS:
     void changed();

src/qt/rpcconsole.cpp

@@ -659,6 +659,7 @@ void RPCConsole::setClientModel(ClientModel *model, int bestblock_height, int64_
         connect(model, &ClientModel::mempoolSizeChanged, this, &RPCConsole::setMempoolSize);
 
         // set up peer table
+        clientModel->getPeerTableModel()->updatePalette();
         ui->peerWidget->setModel(model->peerTableSortProxy());
         ui->peerWidget->verticalHeader()->hide();
         ui->peerWidget->setSelectionBehavior(QAbstractItemView::SelectRows);
@@ -896,6 +897,10 @@ void RPCConsole::changeEvent(QEvent* e)
                 QUrl(ICON_MAPPING[i].url),
                 platformStyle->SingleColorImage(ICON_MAPPING[i].source).scaled(QSize(consoleFontSize * 2, consoleFontSize * 2), Qt::IgnoreAspectRatio, Qt::SmoothTransformation));
         }
+
+        if (clientModel && clientModel->getPeerTableModel()) {
+            clientModel->getPeerTableModel()->updatePalette();
+        }
     }
 #endif
 }