Finish moving all qtlib py files to qt

qt/radio_box.py

@@ -0,0 +1,88 @@
+# Created On: 2010-06-02
+# Copyright 2015 Hardcoded Software (http://www.hardcoded.net)
+#
+# This software is licensed under the "GPLv3" License as described in the "LICENSE" file,
+# which should be included with this package. The terms are also available at
+# http://www.gnu.org/licenses/gpl-3.0.html
+
+from PyQt5.QtCore import pyqtSignal
+from PyQt5.QtWidgets import QWidget, QHBoxLayout, QRadioButton
+
+from qt.util import horizontal_spacer
+
+
+class RadioBox(QWidget):
+    def __init__(self, parent=None, items=None, spread=True, **kwargs):
+        # If spread is False, insert a spacer in the layout so that the items don't use all the
+        # space they're given but rather align left.
+        if items is None:
+            items = []
+        super().__init__(parent, **kwargs)
+        self._buttons = []
+        self._labels = items
+        self._selected_index = 0
+        self._spacer = horizontal_spacer() if not spread else None
+        self._layout = QHBoxLayout(self)
+        self._update_buttons()
+
+    # --- Private
+    def _update_buttons(self):
+        if self._spacer is not None:
+            self._layout.removeItem(self._spacer)
+        to_remove = self._buttons[len(self._labels) :]
+        for button in to_remove:
+            self._layout.removeWidget(button)
+            button.setParent(None)
+        del self._buttons[len(self._labels) :]
+        to_add = self._labels[len(self._buttons) :]
+        for _ in to_add:
+            button = QRadioButton(self)
+            self._buttons.append(button)
+            self._layout.addWidget(button)
+            button.toggled.connect(self.buttonToggled)
+        if self._spacer is not None:
+            self._layout.addItem(self._spacer)
+        if not self._buttons:
+            return
+        for button, label in zip(self._buttons, self._labels):
+            button.setText(label)
+        self._update_selection()
+
+    def _update_selection(self):
+        self._selected_index = max(0, min(self._selected_index, len(self._buttons) - 1))
+        selected = self._buttons[self._selected_index]
+        selected.setChecked(True)
+
+    # --- Event Handlers
+    def buttonToggled(self):
+        for i, button in enumerate(self._buttons):
+            if button.isChecked():
+                self._selected_index = i
+                self.itemSelected.emit(i)
+                break
+
+    # --- Signals
+    itemSelected = pyqtSignal(int)
+
+    # --- Properties
+    @property
+    def buttons(self):
+        return self._buttons[:]
+
+    @property
+    def items(self):
+        return self._labels[:]
+
+    @items.setter
+    def items(self, value):
+        self._labels = value
+        self._update_buttons()
+
+    @property
+    def selected_index(self):
+        return self._selected_index
+
+    @selected_index.setter
+    def selected_index(self, value):
+        self._selected_index = value
+        self._update_selection()