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