From 8d6acf3a8ea4b37f86b321dbf430be5be01b1267 Mon Sep 17 00:00:00 2001
From: Christian Kolset <christian.kolset@gmail.com>
Date: Mon, 13 Apr 2026 14:36:55 -0600
Subject: init

---
 daq_system/ui/alarm_panel.py | 85 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 daq_system/ui/alarm_panel.py

(limited to 'daq_system/ui/alarm_panel.py')

diff --git a/daq_system/ui/alarm_panel.py b/daq_system/ui/alarm_panel.py
new file mode 100644
index 0000000..590d785
--- /dev/null
+++ b/daq_system/ui/alarm_panel.py
@@ -0,0 +1,85 @@
+"""
+ui/alarm_panel.py  —  Alarm event log panel.
+"""
+
+from datetime import datetime
+from PyQt6.QtWidgets import (
+    QWidget, QVBoxLayout, QHBoxLayout, QLabel,
+    QScrollArea, QFrame, QPushButton
+)
+from PyQt6.QtCore import Qt
+
+
+class AlarmEntry(QFrame):
+    def __init__(self, device_id, channel_id, value, kind, timestamp):
+        super().__init__()
+        self.setObjectName("alarmEntry")
+        color = "#f85149" if kind == "high" else "#d29922"
+        self.setStyleSheet(f"border-left: 3px solid {color};")
+        layout = QHBoxLayout(self)
+        layout.setContentsMargins(8, 4, 8, 4)
+        icon = "▲" if kind == "high" else "▼"
+        msg = QLabel(f"{icon}  {device_id} / {channel_id}  =  {value:.3f}  [{kind.upper()}]")
+        msg.setObjectName("alarmMsg")
+        ts_lbl = QLabel(timestamp)
+        ts_lbl.setObjectName("alarmTs")
+        layout.addWidget(msg)
+        layout.addStretch()
+        layout.addWidget(ts_lbl)
+
+
+class AlarmPanel(QWidget):
+    def __init__(self):
+        super().__init__()
+        self._build_ui()
+
+    def _build_ui(self):
+        layout = QVBoxLayout(self)
+        layout.setContentsMargins(0, 0, 0, 0)
+        layout.setSpacing(0)
+
+        hdr_row = QHBoxLayout()
+        hdr = QLabel("  ALARMS")
+        hdr.setObjectName("panelHeader")
+        hdr_row.addWidget(hdr)
+        hdr_row.addStretch()
+        clr = QPushButton("Clear")
+        clr.setObjectName("clearAlarmsBtn")
+        clr.clicked.connect(self.clear_alarms)
+        hdr_row.addWidget(clr)
+        hdr_widget = QWidget()
+        hdr_widget.setLayout(hdr_row)
+        hdr_widget.setObjectName("alarmHeaderWidget")
+        layout.addWidget(hdr_widget)
+
+        scroll = QScrollArea()
+        scroll.setWidgetResizable(True)
+        self._container = QWidget()
+        self._inner = QVBoxLayout(self._container)
+        self._inner.setContentsMargins(4, 4, 4, 4)
+        self._inner.setSpacing(3)
+        self._inner.addStretch()
+        scroll.setWidget(self._container)
+        layout.addWidget(scroll)
+
+        self._scroll = scroll
+        self._count = 0
+
+    def add_alarm(self, device_id, channel_id, value, kind):
+        ts = datetime.now().strftime("%H:%M:%S")
+        entry = AlarmEntry(device_id, channel_id, value, kind, ts)
+        self._inner.insertWidget(0, entry)
+        self._count += 1
+        # Keep last 200
+        if self._count > 200:
+            item = self._inner.takeAt(self._inner.count() - 2)
+            if item and item.widget():
+                item.widget().deleteLater()
+            self._count -= 1
+
+    def clear_alarms(self):
+        while self._inner.count() > 1:
+            item = self._inner.takeAt(0)
+            if item and item.widget():
+                item.widget().deleteLater()
+        self._count = 0
-- 
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