BUGFIX: VFT;

change to src layout

src/gui_qt/lib/spinboxes.py

@@ -0,0 +1,45 @@
+from math import inf
+
+from ..Qt import QtWidgets, QtGui
+
+
+class SciSpinBox(QtWidgets.QDoubleSpinBox):
+    def __init__(self, parent=None):
+        super().__init__(parent=parent)
+
+        self.validator = QtGui.QDoubleValidator(self)
+
+        self.setMinimum(-inf)
+        self.setMaximum(inf)
+        self.setDecimals(1000)
+        self.precision = 0.001
+
+        self._prev_value = float(self.lineEdit().text())
+
+    def valueFromText(self, text: str) -> float:
+        try:
+            self._prev_value = float(self.cleanText())
+        except ValueError:
+            pass
+        return self._prev_value
+
+    def textFromValue(self, value: float) -> str:
+        if value == 0:
+            return '0'
+        else:
+            return f'{value:.3e}'
+
+    def stepBy(self, step: int):
+        self._prev_value = self.value()
+
+        new_value = self._prev_value
+        if new_value != 0.0:
+            new_value *= 10**(step/19.)
+        else:
+            new_value = 0.001
+
+        self.setValue(new_value)
+        self.lineEdit().setText(f'{new_value:.3e}')
+
+    def validate(self, text, pos):
+        return self.validator.validate(text, pos)