Initial commit: BobinkQtOpcUa app template with demo UI

Qt 6 QML application template using BobinkQtOpcUa as a submodule for
OPC UA connectivity. Includes discovery, PKI, auth, node monitoring
with read/write, and a multi-page demo UI.

1 files changed, 84 insertions, 0 deletions

diff --git a/main.cpp b/main.cpp
new file mode 100644
index 0000000..aa341ad
--- /dev/null
+++ b/main.cpp
@@ -0,0 +1,84 @@
+/**
+ * @file   main.cpp
+ * @brief  Entry point for the Bobink demo application.
+ */
+#include <QDateTime>
+#include <QGuiApplication>
+#include <QQmlApplicationEngine>
+
+#include <QtQml/QQmlExtensionPlugin>
+Q_IMPORT_QML_PLUGIN (BobinkPlugin)
+
+/** @brief Custom log handler matching open62541 server log format. */
+static void
+logHandler (QtMsgType type, const QMessageLogContext &ctx, const QString &msg)
+{
+  // Color only the type/category tag.
+  const char *color = "";
+  const char *label = "debug";
+  switch (type)
+    {
+    case QtDebugMsg:
+      label = "debug";
+      break;
+    case QtInfoMsg:
+      color = "\x1b[32m";
+      label = "info";
+      break;
+    case QtWarningMsg:
+      color = "\x1b[33m";
+      label = "warning";
+      break;
+    case QtCriticalMsg:
+      color = "\x1b[31m";
+      label = "critical";
+      break;
+    case QtFatalMsg:
+      color = "\x1b[1;31m";
+      label = "fatal";
+      break;
+    }
+
+  // Shorten "qt.opcua.plugins.open62541.sdk.client" → "client".
+  QLatin1StringView cat (ctx.category ? ctx.category : "default");
+  qsizetype dot = cat.lastIndexOf (QLatin1Char ('.'));
+  if (dot >= 0)
+    cat = cat.sliced (dot + 1);
+
+  // "debug/client", "warning/network", etc. — padded to 20 chars.
+  QByteArray tag
+      = QByteArray (label) + '/' + QByteArray (cat.data (), cat.size ());
+
+  // Format UTC offset as "(UTC+0100)" to match open62541 server logs.
+  QDateTime now = QDateTime::currentDateTime ();
+  qint32 offset = now.offsetFromUtc ();
+  QChar sign = offset >= 0 ? u'+' : u'-';
+  offset = qAbs (offset);
+  QString ts = now.toString (u"yyyy-MM-dd HH:mm:ss.zzz")
+               + QStringLiteral (" (UTC%1%2%3)")
+                     .arg (sign)
+                     .arg (offset / 3600, 2, 10, QLatin1Char ('0'))
+                     .arg ((offset % 3600) / 60, 2, 10, QLatin1Char ('0'));
+
+  fprintf (stderr, "[%s] %s%-20.*s\x1b[0m %s\n", qPrintable (ts), color,
+           static_cast<int> (tag.size ()), tag.data (), qPrintable (msg));
+}
+
+int
+main (int argc, char *argv[])
+{
+  // Load the locally-built OpcUa backend plugin (open62541).
+  QCoreApplication::addLibraryPath (QStringLiteral (QTOPCUA_PLUGIN_PATH));
+
+  qInstallMessageHandler (logHandler);
+
+  QGuiApplication app (argc, argv);
+
+  QQmlApplicationEngine engine;
+  QObject::connect (
+      &engine, &QQmlApplicationEngine::objectCreationFailed, &app,
+      [] () { QCoreApplication::exit (1); }, Qt::QueuedConnection);
+
+  engine.loadFromModule ("BobinkQtOpcUaAppTemplate", "Main");
+  return app.exec ();
+}