forked from M-Labs/thermostat
ctrl_panel: Pin down units for editable fields
User input always has the same order of magnitude, so allowing multiple siPrefixes would be unwanted complexity. Don't allow them to be changed. The Parameter option "noUnitEditing" is added to do so by the following measures: 1. Don't validate for changed siPrefix (if pinned) and suffix, which avoids their removal. 2. Avoid getting the cursor embedded within the unit.
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a50c54f972
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86c68f0e64
@ -4,7 +4,7 @@ from pyqtgraph.parametertree import (
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Parameter,
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registerParameterType,
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)
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import pytec.gui.view.pin_si_prefix
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import pytec.gui.view.lockable_unit
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class MutexParameter(pTypes.ListParameter):
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@ -1,21 +1,84 @@
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from PyQt6.QtCore import QSignalBlocker
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from PyQt6.QtGui import QValidator
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from pyqtgraph import SpinBox
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import pyqtgraph.functions as fn
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from pyqtgraph.parametertree import registerParameterItemType
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from pyqtgraph.parametertree.parameterTypes import SimpleParameter, NumericParameterItem
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class PinSIPrefixSpinBox(SpinBox):
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class LockableUnitSpinBox(SpinBox):
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"""
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Extension of PyQtGraph's SpinBox widget.
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Adds:
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* The "pinSiPrefix" option, where the siPrefix could be fixed to a
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particular scale instead of as determined by its value.
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* The "noUnitEditing" option, where the suffix and pinned siPrefix
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of the SpinBox text is fixed and uneditable.
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"""
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def __init__(self, parent=None, value=0.0, **kwargs):
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super().__init__(parent, value, **kwargs)
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self.lineEdit().cursorPositionChanged.connect(
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self._editor_cursor_position_changed
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)
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def validate(self, strn, pos):
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ret, strn, pos = super().validate(strn, pos)
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if self.opts.get("noUnitEditing") is True:
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suffix = self.opts["suffix"]
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pinned_si_prefix = self.opts.get("pinSiPrefix")
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suffix_edited = not strn.endswith(suffix)
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pinned_si_prefix_edited = (
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pinned_si_prefix is not None
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and not strn.removesuffix(suffix).endswith(pinned_si_prefix)
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)
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if suffix_edited or pinned_si_prefix_edited:
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ret = QValidator.State.Invalid
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return ret, strn, pos
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def _editor_cursor_position_changed(self, oldpos, newpos):
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# Called on cursor position change
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# Skips over the suffix and pinned SI prefix on cursor navigation if option
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# noUnitEditing is enabled.
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# Modified from the original Qt C++ source,
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# QAbstractSpinBox::editorCursorPositionChanged.
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# Their suffix is different than our suffix; there's no obvious way to set
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# theirs here in the derived class since it is private.
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if self.opts.get("noUnitEditing") is True:
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edit = self.lineEdit()
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if edit.hasSelectedText():
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return # Allow for selecting units, for copy-and-paste
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pinned_si_prefix = self.opts.get("pinSiPrefix") or ""
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unit_len = len(pinned_si_prefix) + len(self.opts["suffix"])
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text_len = len(edit.text())
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pos = -1
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# Cursor in unit
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if text_len - unit_len < newpos < text_len:
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if oldpos == text_len:
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pos = text_len - unit_len
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else:
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pos = text_len
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if pos != -1:
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with QSignalBlocker(edit):
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edit.setCursorPosition(pos)
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def setOpts(self, **opts):
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if "pinSiPrefix" in opts:
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self.opts["pinSiPrefix"] = opts.pop("pinSiPrefix")
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if "noUnitEditing" in opts:
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self.opts["noUnitEditing"] = opts.pop("noUnitEditing")
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super().setOpts(**opts)
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@ -57,10 +120,10 @@ class PinSIPrefixSpinBox(SpinBox):
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return self.opts['format'].format(**parts)
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class PinSIPrefixNumericParameterItem(NumericParameterItem):
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class UnitfulNumericParameterItem(NumericParameterItem):
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"""
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Subclasses PyQtGraph's `NumericParameterItem` and uses
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PinSIPrefixSpinBox for editing.
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UnitfulSpinBox for editing.
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"""
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def makeWidget(self):
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@ -70,7 +133,7 @@ class PinSIPrefixNumericParameterItem(NumericParameterItem):
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'value': 0, 'min': None, 'max': None,
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'step': 1.0, 'dec': False,
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'siPrefix': False, 'suffix': '', 'decimals': 3,
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'pinSiPrefix': None,
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'pinSiPrefix': None, 'noUnitEditing': False,
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}
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if t == 'int':
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defs['int'] = True
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@ -80,7 +143,7 @@ class PinSIPrefixNumericParameterItem(NumericParameterItem):
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defs[k] = opts[k]
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if 'limits' in opts:
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defs['min'], defs['max'] = opts['limits']
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w = PinSIPrefixSpinBox()
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w = LockableUnitSpinBox()
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w.setOpts(**defs)
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w.sigChanged = w.sigValueChanged
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w.sigChanging = w.sigValueChanging
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@ -88,8 +151,8 @@ class PinSIPrefixNumericParameterItem(NumericParameterItem):
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registerParameterItemType(
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"float", PinSIPrefixNumericParameterItem, SimpleParameter, override=True
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"float", UnitfulNumericParameterItem, SimpleParameter, override=True
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)
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registerParameterItemType(
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"int", PinSIPrefixNumericParameterItem, SimpleParameter, override=True
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"int", UnitfulNumericParameterItem, SimpleParameter, override=True
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)
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@ -4,7 +4,8 @@
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"name": "temperature",
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"title": "Temperature",
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"type": "float",
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"format": "{value:.4f} °C",
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"format": "{value:.4f} {suffix}",
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"suffix": "°C",
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"readonly": true,
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"tip": "The measured temperature at the thermistor"
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},
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@ -58,6 +59,7 @@
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"pinSiPrefix": "m",
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"suffix": "A",
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"siPrefix": true,
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"noUnitEditing": true,
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"param": [
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"pwm",
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"ch",
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@ -76,7 +78,9 @@
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-273,
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300
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],
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"format": "{value:.4f} °C",
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"format": "{value:.4f} {suffix}",
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"suffix": "°C",
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"noUnitEditing": true,
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"param": [
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"pid",
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"ch",
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@ -108,6 +112,7 @@
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"siPrefix": true,
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"pinSiPrefix": "m",
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"suffix": "A",
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"noUnitEditing": true,
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"param": [
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"pwm",
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"ch",
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@ -126,6 +131,7 @@
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"siPrefix": true,
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"pinSiPrefix": "m",
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"suffix": "A",
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"noUnitEditing": true,
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"limits": [
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0,
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2
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@ -150,6 +156,7 @@
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],
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"siPrefix": true,
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"suffix": "V",
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"noUnitEditing": true,
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"param": [
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"pwm",
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"ch",
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@ -179,7 +186,9 @@
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-100,
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100
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],
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"format": "{value:.4f} °C",
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"format": "{value:.4f} {suffix}",
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"suffix": "°C",
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"noUnitEditing": true,
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"param": [
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"s-h",
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"ch",
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@ -195,7 +204,9 @@
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"value": 10000,
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"step": 1,
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"siPrefix": true,
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"pinSiPrefix": "k",
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"suffix": "Ω",
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"noUnitEditing": true,
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"param": [
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"s-h",
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"ch",
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@ -211,6 +222,7 @@
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"value": 3950,
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"step": 1,
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"suffix": "K",
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"noUnitEditing": true,
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"decimals": 4,
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"param": [
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"s-h",
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@ -269,6 +281,7 @@
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"type": "float",
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"step": 0.1,
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"suffix": "Hz",
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"noUnitEditing": true,
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"param": [
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"pid",
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"ch",
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@ -283,6 +296,7 @@
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"type": "float",
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"step": 0.1,
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"suffix": "s",
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"noUnitEditing": true,
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"param": [
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"pid",
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"ch",
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@ -311,6 +325,7 @@
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"siPrefix": true,
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"pinSiPrefix": "m",
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"suffix": "A",
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"noUnitEditing": true,
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"param": [
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"pid",
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"ch",
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@ -332,6 +347,7 @@
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"siPrefix": true,
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"pinSiPrefix": "m",
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"suffix": "A",
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"noUnitEditing": true,
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"param": [
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"pid",
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"ch",
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@ -355,7 +371,9 @@
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"type": "float",
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"value": 20,
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"step": 0.1,
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"format": "{value:.4f} °C",
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"format": "{value:.4f} {suffix}",
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"suffix": "°C",
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"noUnitEditing": true,
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"pid_autotune": [
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"target_temp",
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"ch"
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@ -376,6 +394,7 @@
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"siPrefix": true,
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"pinSiPrefix": "m",
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"suffix": "A",
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"noUnitEditing": true,
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"pid_autotune": [
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"test_current",
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"ch"
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@ -389,7 +408,9 @@
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"value": 1.5,
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"step": 0.1,
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"prefix": "±",
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"format": "{value:.4f} °C",
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"format": "{value:.4f} {suffix}",
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"suffix": "°C",
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"noUnitEditing": true,
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"pid_autotune": [
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"temp_swing",
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"ch"
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@ -402,7 +423,9 @@
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"type": "float",
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"value": 3.0,
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"step": 0.1,
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"format": "{value:.4f} s",
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"format": "{value:.4f} {suffix}",
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"noUnitEditing": true,
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"suffix": "s",
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"pid_autotune": [
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"lookback",
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"ch"
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