Split up PreferencesUI.py into individual files for each class, then fixed the imports everywhere that broke because of this.

flatcamGUI/preferences/ExcellonPreferencesUI.py

@@ -0,0 +1,38 @@
+from PyQt5 import QtWidgets
+
+from flatcamGUI.preferences.ExcellonEditorPrefGroupUI import ExcellonEditorPrefGroupUI
+from flatcamGUI.preferences.ExcellonExpPrefGroupUI import ExcellonExpPrefGroupUI
+from flatcamGUI.preferences.ExcellonAdvOptPrefGroupUI import ExcellonAdvOptPrefGroupUI
+from flatcamGUI.preferences.ExcellonOptPrefGroupUI import ExcellonOptPrefGroupUI
+from flatcamGUI.preferences.ExcellonGenPrefGroupUI import ExcellonGenPrefGroupUI
+
+
+class ExcellonPreferencesUI(QtWidgets.QWidget):
+
+    def __init__(self, decimals, parent=None):
+        QtWidgets.QWidget.__init__(self, parent=parent)
+        self.layout = QtWidgets.QHBoxLayout()
+        self.setLayout(self.layout)
+        self.decimals = decimals
+
+        self.excellon_gen_group = ExcellonGenPrefGroupUI(decimals=self.decimals)
+        self.excellon_gen_group.setMinimumWidth(220)
+        self.excellon_opt_group = ExcellonOptPrefGroupUI(decimals=self.decimals)
+        self.excellon_opt_group.setMinimumWidth(290)
+        self.excellon_exp_group = ExcellonExpPrefGroupUI(decimals=self.decimals)
+        self.excellon_exp_group.setMinimumWidth(250)
+        self.excellon_adv_opt_group = ExcellonAdvOptPrefGroupUI(decimals=self.decimals)
+        self.excellon_adv_opt_group.setMinimumWidth(250)
+        self.excellon_editor_group = ExcellonEditorPrefGroupUI(decimals=self.decimals)
+        self.excellon_editor_group.setMinimumWidth(260)
+
+        self.vlay = QtWidgets.QVBoxLayout()
+        self.vlay.addWidget(self.excellon_opt_group)
+        self.vlay.addWidget(self.excellon_exp_group)
+
+        self.layout.addWidget(self.excellon_gen_group)
+        self.layout.addLayout(self.vlay)
+        self.layout.addWidget(self.excellon_adv_opt_group)
+        self.layout.addWidget(self.excellon_editor_group)
+
+        self.layout.addStretch()