Implemented qt port + e2e

Client/streamhub-qt/MainWindow.h

@@ -0,0 +1,75 @@
+/**
+ * @file MainWindow.h
+ * @brief Top-level window: toolbar, source dock, plot grid, trigger/history
+ *        bars, stats dialog. Owns the Hub, the shared GlobalView, and the
+ *        60 Hz repaint/refresh timer.
+ */
+
+#pragma once
+
+#include "Hub.h"
+#include "PlotWidget.h"   /* GlobalView */
+
+#include <QMainWindow>
+
+class QToolButton;
+class QComboBox;
+class QLineEdit;
+class QLabel;
+class QTimer;
+class QDockWidget;
+
+namespace shq {
+
+class PlotGrid;
+class SourceSidebar;
+class TriggerBar;
+class HistoryBar;
+class StatsDialog;
+
+class MainWindow : public QMainWindow {
+    Q_OBJECT
+public:
+    explicit MainWindow(const QString& host, uint16_t port,
+                        QWidget* parent = nullptr);
+
+private Q_SLOTS:
+    void onConnectedChanged(bool connected);
+    void onSourcesChanged();
+    void onConfigChanged(const QString& sourceId);
+    void onStatsChanged();
+    void onTriggerStateChanged();
+    void onHistoryInfoChanged();
+    void onTick();
+
+    void togglePause();
+    void toggleHistory();
+    void openAddSourceDialog();
+    void doConnect();
+
+private:
+    void buildToolbar();
+
+    Hub        hub_;
+    GlobalView gv_;
+
+    PlotGrid*      grid_   = nullptr;
+    SourceSidebar* sidebar_= nullptr;
+    QDockWidget*   sideDock_ = nullptr;
+    TriggerBar*    trigBar_= nullptr;
+    HistoryBar*    histBar_= nullptr;
+    StatsDialog*   stats_  = nullptr;
+
+    QToolButton* pauseBtn_   = nullptr;
+    QToolButton* cursorBtn_  = nullptr;
+    QToolButton* trigBtn_    = nullptr;
+    QToolButton* histBtn_    = nullptr;
+    QComboBox*   winCombo_   = nullptr;
+    QLineEdit*   hostEdit_   = nullptr;
+    QLineEdit*   portEdit_   = nullptr;
+    QLabel*      ledLbl_     = nullptr;
+
+    QTimer* timer_ = nullptr;
+};
+
+} /* namespace shq */