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"""
ui/readout_panel.py — Right-side numeric readout panel.
"""
from PyQt6.QtWidgets import (
QWidget, QVBoxLayout, QHBoxLayout, QLabel,
QScrollArea, QFrame, QProgressBar,
)
from PyQt6.QtCore import Qt, pyqtSlot
from devices.device_registry import DeviceRegistry
class ChannelReadout(QFrame):
def __init__(self, ch_config):
super().__init__()
self.ch = ch_config
self.setObjectName("channelReadout")
self._alarm = False
self._build()
def _build(self):
layout = QVBoxLayout(self)
layout.setContentsMargins(8, 6, 8, 6)
layout.setSpacing(2)
top = QHBoxLayout()
self._name = QLabel(self.ch.name)
self._name.setObjectName("readoutName")
top.addWidget(self._name, 1)
self._val = QLabel("— — —")
self._val.setObjectName("readoutValue")
self._val.setStyleSheet(f"color:{self.ch.color};")
top.addWidget(self._val)
unit = QLabel(f" {self.ch.unit}")
unit.setObjectName("readoutUnit")
top.addWidget(unit)
layout.addLayout(top)
self._bar = QProgressBar()
self._bar.setObjectName("readoutBar")
self._bar.setRange(0, 1000)
self._bar.setValue(500)
self._bar.setTextVisible(False)
self._bar.setMaximumHeight(3)
self._bar.setStyleSheet(
f"QProgressBar::chunk {{ background:{self.ch.color}; border-radius:1px; }}"
)
layout.addWidget(self._bar)
def update_value(self, v: float):
self._val.setText(f"{v:>10.4f}".strip())
rng = self.ch.max_value - self.ch.min_value
norm = int(((v - self.ch.min_value) / rng) * 1000) if rng else 500
self._bar.setValue(max(0, min(1000, norm)))
alarm = (
(self.ch.alarm_low is not None and v < self.ch.alarm_low) or
(self.ch.alarm_high is not None and v > self.ch.alarm_high)
)
if alarm != self._alarm:
self._alarm = alarm
self.setProperty("alarm", alarm)
self.style().unpolish(self)
self.style().polish(self)
class ReadoutPanel(QWidget):
def __init__(self, registry: DeviceRegistry):
super().__init__()
self.registry = registry
self._readouts = {} # (dev_id, ch_id) -> ChannelReadout
self._build()
self.refresh()
def _build(self):
layout = QVBoxLayout(self)
layout.setContentsMargins(0, 0, 0, 0)
layout.setSpacing(0)
hdr = QLabel(" CHANNELS")
hdr.setObjectName("panelHeader")
hdr.setMinimumHeight(28)
layout.addWidget(hdr)
scroll = QScrollArea()
scroll.setWidgetResizable(True)
scroll.setHorizontalScrollBarPolicy(Qt.ScrollBarPolicy.ScrollBarAlwaysOff)
self._container = QWidget()
self._inner = QVBoxLayout(self._container)
self._inner.setContentsMargins(6, 6, 6, 6)
self._inner.setSpacing(4)
self._inner.addStretch()
scroll.setWidget(self._container)
layout.addWidget(scroll)
def refresh(self):
for w in self._readouts.values():
w.deleteLater()
self._readouts.clear()
# Clear layout
while self._inner.count() > 1:
item = self._inner.takeAt(0)
if item and item.widget():
item.widget().deleteLater()
for dev in self.registry.all_instances():
for ch in dev.info.channels:
if not ch.enabled:
continue
ro = ChannelReadout(ch)
self._inner.insertWidget(self._inner.count() - 1, ro)
self._readouts[(dev.info.device_id, ch.channel_id)] = ro
@pyqtSlot(str, str, float, float)
def on_new_data(self, dev_id: str, ch_id: str, _ts: float, value: float):
ro = self._readouts.get((dev_id, ch_id))
if ro:
ro.update_value(value)
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