ctrl_panel: Reformat SpinBox text always if valid

The parameter SpinBoxes previously would only update if the interpreted
value was changed, missing cases where the text would have changed but
the value stays the same, e.g. removing trailing decimal zeros.

pytec/pytec/gui/view/ctrl_panel.py

@@ -7,42 +7,6 @@ from pyqtgraph.parametertree import (
 import pytec.gui.view.unitful
 
 
-class MutexParameter(pTypes.ListParameter):
-    """
-    Mutually exclusive parameter where only one of its children is visible at a time, list selectable.
-
-    The ordering of the list items determines which children will be visible.
-    """
-
-    def __init__(self, **opts):
-        super().__init__(**opts)
-
-        self.sigValueChanged.connect(self.show_chosen_child)
-        self.sigValueChanged.emit(self, self.opts["value"])
-
-    def _get_param_from_value(self, value):
-        if isinstance(self.opts["limits"], dict):
-            values_list = list(self.opts["limits"].values())
-        else:
-            values_list = self.opts["limits"]
-
-        return self.children()[values_list.index(value)]
-
-    @pyqtSlot(object, object)
-    def show_chosen_child(self, value):
-        for param in self.children():
-            param.hide()
-
-        child_to_show = self._get_param_from_value(value.value())
-        child_to_show.show()
-
-        if child_to_show.opts.get("triggerOnShow", None):
-            child_to_show.sigValueChanged.emit(child_to_show, child_to_show.value())
-
-
-registerParameterType("mutex", MutexParameter)
-
-
 def set_tree_label_tips(tree):
     for item in tree.listAllItems():
         p = item.param
@@ -66,6 +30,11 @@ class CtrlPanel(QObject):
         self.trees_ui = trees_ui
         self.NUM_CHANNELS = len(trees_ui)
 
+        def _set_value_with_lock(self, value):
+            if not self.opts.get("lock"):
+                self.setValue(value)
+        Parameter.set_value_with_lock = _set_value_with_lock
+
         self.params = [
             Parameter.create(
                 name=f"Thermostat Channel {ch} Parameters",
@@ -83,37 +52,31 @@ class CtrlPanel(QObject):
             set_tree_label_tips(tree)
 
         for ch, param in enumerate(self.params):
-            self.params[ch].setValue = self._setValue
             param.sigTreeStateChanged.connect(sigTreeStateChanged_handle)
 
             for handle in sigActivated_handles[ch]:
                 param.child(*handle[0]).sigActivated.connect(handle[1])
 
-    def _setValue(self, value, blockSignal=None):
-        """
-        Implement 'lock' mechanism for Parameter Type
+            def _indicate_usage(param, control_method):
+                for item in param.child("i_set").items:
+                    is_constant_current = control_method == "constant_current"
+                    font = item.font(0)
+                    font.setUnderline(is_constant_current)
+                    font.setBold(is_constant_current)
+                    item.setFont(0, font)
+                for item in param.child("target").items:
+                    is_temperature_pid = control_method == "temperature_pid"
+                    font = item.font(0)
+                    font.setUnderline(is_temperature_pid)
+                    font.setBold(is_temperature_pid)
+                    item.setFont(0, font)
 
-        Modified from the source
-        """
-        try:
-            if blockSignal is not None:
-                self.sigValueChanged.disconnect(blockSignal)
-            value = self._interpretValue(value)
-            if fn.eq(self.opts["value"], value):
-                return value
+            param.child("output", "control_method").sigValueChanged.connect(_indicate_usage)
 
-            if "lock" in self.opts.keys():
-                if self.opts["lock"]:
-                    return value
-            self.opts["value"] = value
-            self.sigValueChanged.emit(
-                self, value
-            )  # value might change after signal is received by tree item
-        finally:
-            if blockSignal is not None:
-                self.sigValueChanged.connect(blockSignal)
-
-        return self.opts["value"]
+            for item in param.child("output", "control_method").items:
+                font = item.font(0)
+                font.setBold(True)
+                item.setFont(0, font)
 
     def change_params_title(self, channel, path, title):
         self.params[channel].child(*path).setOpts(title=title)
@@ -123,55 +86,59 @@ class CtrlPanel(QObject):
         for settings in pid_settings:
             channel = settings["channel"]
             with QSignalBlocker(self.params[channel]):
-                self.params[channel].child("pid", "kp").setValue(
+                self.params[channel].child("pid", "kp").set_value_with_lock(
                     settings["parameters"]["kp"]
                 )
-                self.params[channel].child("pid", "ki").setValue(
+                self.params[channel].child("pid", "ki").set_value_with_lock(
                     settings["parameters"]["ki"]
                 )
-                self.params[channel].child("pid", "kd").setValue(
+                self.params[channel].child("pid", "kd").set_value_with_lock(
                     settings["parameters"]["kd"]
                 )
                 self.params[channel].child(
                     "pid", "pid_output_clamping", "output_min"
-                ).setValue(settings["parameters"]["output_min"])
+                ).set_value_with_lock(settings["parameters"]["output_min"])
                 self.params[channel].child(
                     "pid", "pid_output_clamping", "output_max"
-                ).setValue(settings["parameters"]["output_max"])
+                ).set_value_with_lock(settings["parameters"]["output_max"])
                 self.params[channel].child(
                     "output", "control_method", "target"
-                ).setValue(settings["target"])
+                ).set_value_with_lock(settings["target"])
 
     @pyqtSlot("QVariantList")
     def update_report(self, report_data):
         for settings in report_data:
             channel = settings["channel"]
             with QSignalBlocker(self.params[channel]):
-                self.params[channel].child("output", "control_method").setValue(
+                self.params[channel].child(
+                    "output", "control_method"
+                ).set_value_with_lock(
                     "temperature_pid" if settings["pid_engaged"] else "constant_current"
                 )
                 self.params[channel].child(
                     "output", "control_method", "i_set"
-                ).setValue(settings["i_set"])
+                ).set_value_with_lock(settings["i_set"])
                 if settings["temperature"] is not None:
-                    self.params[channel].child("temperature").setValue(
-                        settings["temperature"]
-                    )
+                    self.params[channel].child(
+                        "readings", "temperature"
+                    ).set_value_with_lock(settings["temperature"])
                     if settings["tec_i"] is not None:
-                        self.params[channel].child("tec_i").setValue(settings["tec_i"])
+                        self.params[channel].child(
+                            "readings", "tec_i"
+                        ).set_value_with_lock(settings["tec_i"])
 
     @pyqtSlot("QVariantList")
     def update_thermistor(self, sh_data):
         for sh_param in sh_data:
             channel = sh_param["channel"]
             with QSignalBlocker(self.params[channel]):
-                self.params[channel].child("thermistor", "t0").setValue(
+                self.params[channel].child("thermistor", "t0").set_value_with_lock(
                     sh_param["params"]["t0"] - 273.15
                 )
-                self.params[channel].child("thermistor", "r0").setValue(
+                self.params[channel].child("thermistor", "r0").set_value_with_lock(
                     sh_param["params"]["r0"]
                 )
-                self.params[channel].child("thermistor", "b").setValue(
+                self.params[channel].child("thermistor", "b").set_value_with_lock(
                     sh_param["params"]["b"]
                 )
 
@@ -182,15 +149,15 @@ class CtrlPanel(QObject):
         for pwm_params in pwm_data:
             channel = pwm_params["channel"]
             with QSignalBlocker(self.params[channel]):
-                self.params[channel].child("output", "limits", "max_v").setValue(
-                    pwm_params["max_v"]["value"]
-                )
-                self.params[channel].child("output", "limits", "max_i_pos").setValue(
-                    pwm_params["max_i_pos"]["value"]
-                )
-                self.params[channel].child("output", "limits", "max_i_neg").setValue(
-                    pwm_params["max_i_neg"]["value"]
-                )
+                self.params[channel].child(
+                    "output", "limits", "max_v"
+                ).set_value_with_lock(pwm_params["max_v"]["value"])
+                self.params[channel].child(
+                    "output", "limits", "max_i_pos"
+                ).set_value_with_lock(pwm_params["max_i_pos"]["value"])
+                self.params[channel].child(
+                    "output", "limits", "max_i_neg"
+                ).set_value_with_lock(pwm_params["max_i_neg"]["value"])
 
             for limit in "max_i_pos", "max_i_neg", "max_v":
                 if pwm_params[limit]["value"] == 0.0:
@@ -202,6 +169,6 @@ class CtrlPanel(QObject):
         for postfilter_params in postfilter_data:
             channel = postfilter_params["channel"]
             with QSignalBlocker(self.params[channel]):
-                self.params[channel].child("thermistor", "rate").setValue(
+                self.params[channel].child("postfilter", "rate").set_value_with_lock(
                     postfilter_params["rate"]
                 )

pytec/pytec/gui/view/param_tree.json

@@ -1,5 +1,11 @@
 {
    "ctrl_panel": [
+      {
+         "name": "readings",
+         "title": "Readings",
+         "type": "group",
+         "tip": "Thermostat readings",
+         "children": [
             {
                "name": "temperature",
                "title": "Temperature",
@@ -18,6 +24,8 @@
                "decimals": 6,
                "readonly": true,
                "tip": "The measured current through the TEC"
+            }
+         ]
       },
       {
          "name": "output",
@@ -29,7 +37,7 @@
             {
                "name": "control_method",
                "title": "Control Method",
-               "type": "mutex",
+               "type": "list",
                "limits": {
                   "Constant Current": "constant_current",
                   "Temperature PID": "temperature_pid"
@@ -54,7 +62,6 @@
                         -2,
                         2
                      ],
-                     "triggerOnShow": true,
                      "decimals": 6,
                      "pinSiPrefix": "m",
                      "suffix": "A",
@@ -154,11 +161,11 @@
                      "type": "float",
                      "value": 0,
                      "step": 0.1,
+                     "decimals": 3,
                      "limits": [
                         0,
                         4
                      ],
-                     "siPrefix": true,
                      "suffix": "V",
                      "noUnitEditing": true,
                      "compactHeight": false,
@@ -179,7 +186,7 @@
          "title": "Thermistor Settings",
          "expanded": true,
          "type": "group",
-         "tip": "Settings of the connected thermistor\n- Parameters for the resistance to temperature conversion (with the B-Parameter equation)\n- Settings for the 50/60 Hz filter with the thermistor",
+         "tip": "Parameters for the resistance to temperature conversion with the B-Parameter equation",
          "children": [
             {
                "name": "t0",
@@ -208,7 +215,7 @@
                "title": "R₀",
                "type": "float",
                "value": 10000,
-               "step": 1,
+               "step": 100,
                "min": 0,
                "siPrefix": true,
                "pinSiPrefix": "k",
@@ -228,7 +235,7 @@
                "title": "B",
                "type": "float",
                "value": 3950,
-               "step": 1,
+               "step": 10,
                "suffix": "K",
                "noUnitEditing": true,
                "decimals": 4,
@@ -240,10 +247,18 @@
                ],
                "tip": "The Beta Parameter",
                "lock": false
+            }
+         ]
       },
+      {
+         "name": "postfilter",
+         "title": "50/60 Hz filter settings",
+         "type": "group",
+         "tip": "Settings for the 50/60 Hz filter with the thermistor",
+         "children": [
             {
                "name": "rate",
-               "title": "50/60 Hz filter rejection",
+               "title": "Rejection",
                "type": "list",
                "value": 16.67,
                "param": [
@@ -275,7 +290,6 @@
                "title": "Kp",
                "type": "float",
                "step": 0.1,
-               "suffix": "",
                "compactHeight": false,
                "param": [
                   "pid",
@@ -423,9 +437,8 @@
                      "type": "float",
                      "value": 1.5,
                      "step": 0.1,
-                     "prefix": "±",
                      "format": "{value:.4f} {suffix}",
-                     "suffix": "°C",
+                     "suffix": "K",
                      "noUnitEditing": true,
                      "compactHeight": false,
                      "pid_autotune": [

pytec/pytec/gui/view/unitful.py

@@ -1,3 +1,5 @@
+import re
+
 from PyQt6.QtCore import QSignalBlocker
 from PyQt6.QtGui import QValidator
 
@@ -7,6 +9,13 @@ from pyqtgraph.parametertree import registerParameterItemType
 from pyqtgraph.parametertree.parameterTypes import SimpleParameter, NumericParameterItem
 
 
+# See https://github.com/pyqtgraph/pyqtgraph/issues/3115
+fn.FLOAT_REGEX = re.compile(
+    r"(?P<number>[+-]?((((\d+(\.\d*)?)|(\d*\.\d+))([eE][+-]?\d+)?)|((?i:nan)|(inf))))\s*"
+    + r"((?P<siPrefix>[u" + fn.SI_PREFIXES + r"]?)(?P<suffix>.*))?$"
+)
+
+
 class UnitfulSpinBox(SpinBox):
     """
     Extension of PyQtGraph's SpinBox widget.
@@ -82,6 +91,24 @@ class UnitfulSpinBox(SpinBox):
 
         super().setOpts(**opts)
 
+    def editingFinishedEvent(self):
+        # Modified from pyqtgraph.SpinBox.editingFinishedEvent source
+
+        new_text = self.lineEdit().text()
+        if new_text == self.lastText:
+            return
+        try:
+            val = self.interpret()
+        except Exception:
+            return
+
+        if val is False:
+            return
+        if val == self.val:
+            self.updateText()  # still update text so that values are reformatted pretty-like
+            return
+        self.setValue(val, delaySignal=False)  ## allow text update so that values are reformatted pretty-like
+
     def formatText(self, prev=None):
         """
         In addition to pyqtgraph.SpinBox's formatting, incorporate the

pytec/tec_qt.py

@@ -293,6 +293,10 @@ class MainWindow(QtWidgets.QMainWindow):
                         if activater[1] == "ch":
                             activater[1] = ch
                         await self.client.set_param(*activater)
+                    else:
+                        await self.client.set_param(
+                            "pwm", ch, "i_set", inner_param.child("i_set").value()
+                        )
 
     @asyncSlot()
     async def pid_autotune_request(self, ch=0):