1 files changed, 85 insertions, 0 deletions
diff --git a/ui/alarm_panel.py b/ui/alarm_panel.py
new file mode 100644
index 0000000..1270aff
--- /dev/null
+++ b/ui/alarm_panel.py
@@ -0,0 +1,85 @@
+"""
+ui/alarm_panel.py  —  Alarm event log.
+"""
+
+from datetime import datetime
+from PyQt6.QtWidgets import (
+    QWidget, QVBoxLayout, QHBoxLayout, QLabel,
+    QScrollArea, QFrame, QPushButton,
+)
+from PyQt6.QtCore import Qt
+
+
+class AlarmRow(QFrame):
+    def __init__(self, dev_id: str, ch_id: str, value: float, kind: str):
+        super().__init__()
+        self.setObjectName("alarmEntry")
+        color  = "#ef4444" if kind == "high" else "#f59e0b"
+        arrow  = "▲" if kind == "high" else "▼"
+        self.setStyleSheet(f"QFrame#alarmEntry {{ border-left: 3px solid {color}; }}")
+
+        ts_str = datetime.now().strftime("%H:%M:%S.%f")[:11]
+        layout = QHBoxLayout(self)
+        layout.setContentsMargins(8, 3, 8, 3)
+
+        msg = QLabel(f"{arrow}  {dev_id}  /  {ch_id}   =  {value:.4f}   [{kind.upper()}]")
+        msg.setObjectName("alarmMsg")
+        ts  = QLabel(ts_str)
+        ts.setObjectName("alarmTs")
+
+        layout.addWidget(msg, 1)
+        layout.addWidget(ts)
+
+
+class AlarmPanel(QWidget):
+    def __init__(self):
+        super().__init__()
+        self._count = 0
+        self._build()
+
+    def _build(self):
+        layout = QVBoxLayout(self)
+        layout.setContentsMargins(0, 0, 0, 0)
+        layout.setSpacing(0)
+
+        hdr_w   = QWidget()
+        hdr_w.setObjectName("alarmHeaderWidget")
+        hdr_lay = QHBoxLayout(hdr_w)
+        hdr_lay.setContentsMargins(0, 0, 4, 0)
+        hdr = QLabel("  ALARMS")
+        hdr.setObjectName("panelHeader")
+        hdr.setMinimumHeight(28)
+        hdr_lay.addWidget(hdr, 1)
+        clr = QPushButton("Clear")
+        clr.setObjectName("clearAlarmsBtn")
+        clr.clicked.connect(self.clear)
+        hdr_lay.addWidget(clr)
+        layout.addWidget(hdr_w)
+
+        self._scroll = QScrollArea()
+        self._scroll.setWidgetResizable(True)
+        self._container = QWidget()
+        self._inner = QVBoxLayout(self._container)
+        self._inner.setContentsMargins(4, 4, 4, 4)
+        self._inner.setSpacing(2)
+        self._inner.addStretch()
+        self._scroll.setWidget(self._container)
+        layout.addWidget(self._scroll)
+
+    def add_alarm(self, dev_id: str, ch_id: str, value: float, kind: str):
+        row = AlarmRow(dev_id, ch_id, value, kind)
+        self._inner.insertWidget(0, row)
+        self._count += 1
+        # Cap at 300 entries
+        if self._count > 300:
+            item = self._inner.takeAt(self._inner.count() - 2)
+            if item and item.widget():
+                item.widget().deleteLater()
+            self._count -= 1
+
+    def clear(self):
+        while self._inner.count() > 1:
+            item = self._inner.takeAt(0)
+            if item and item.widget():
+                item.widget().deleteLater()
+        self._count = 0