Add native QCustomPlot renderer and shared plot adapters

python/set_devices/qt_ports/tektronix_controls.py

@@ -0,0 +1,24 @@
+"""Tektronix-style record-length selector, including instrument readback."""
+try:
+    from PySide6.QtWidgets import QComboBox
+except ImportError:
+    from PySide2.QtWidgets import QComboBox
+from set_devices.tektronix_presets import RECORD_LENGTHS
+
+
+class RecordLengthBox(QComboBox):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        for value in RECORD_LENGTHS:
+            self.addItem(f"{value:,}".replace(",", " ") + " точек", value)
+
+    def value(self):
+        return int(self.currentData())
+
+    def setValue(self, value):
+        value = int(value)
+        index = self.findData(value)
+        if index < 0:
+            self.addItem(f"{value:,}".replace(",", " ") + " точек", value)
+            index = self.count() - 1
+        self.setCurrentIndex(index)