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Diffstat (limited to 'examples/widgets/tutorials/modelview/7_selections.py')
-rw-r--r-- | examples/widgets/tutorials/modelview/7_selections.py | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/examples/widgets/tutorials/modelview/7_selections.py b/examples/widgets/tutorials/modelview/7_selections.py new file mode 100644 index 000000000..094d2f4bf --- /dev/null +++ b/examples/widgets/tutorials/modelview/7_selections.py @@ -0,0 +1,104 @@ +############################################################################# +## +## Copyright (C) 2022 The Qt Company Ltd. +## Contact: https://www.qt.io/licensing/ +## +## This file is part of the Qt for Python examples of the Qt Toolkit. +## +## $QT_BEGIN_LICENSE:BSD$ +## You may use this file under the terms of the BSD license as follows: +## +## "Redistribution and use in source and binary forms, with or without +## modification, are permitted provided that the following conditions are +## met: +## * Redistributions of source code must retain the above copyright +## notice, this list of conditions and the following disclaimer. +## * Redistributions in binary form must reproduce the above copyright +## notice, this list of conditions and the following disclaimer in +## the documentation and/or other materials provided with the +## distribution. +## * Neither the name of The Qt Company Ltd nor the names of its +## contributors may be used to endorse or promote products derived +## from this software without specific prior written permission. +## +## +## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +## +## $QT_END_LICENSE$ +## +############################################################################# + +import sys + +from PySide6.QtCore import QItemSelection, Qt, Slot +from PySide6.QtGui import QStandardItem, QStandardItemModel +from PySide6.QtWidgets import QApplication, QMainWindow, QTreeView + +"""PySide6 port of the widgets/tutorials/modelview/7_selections example from Qt v6.x""" + + +class MainWindow(QMainWindow): + def __init__(self, parent=None): + super().__init__(parent) + self._standard_model = QStandardItemModel(self) + self._tree_view = QTreeView(self) + self.setCentralWidget(self._tree_view) + + # defining a couple of items + root_node = self._standard_model.invisibleRootItem() + + america_item = QStandardItem("America") + mexico_item = QStandardItem("Canada") + usa_item = QStandardItem("USA") + boston_item = QStandardItem("Boston") + europe_item = QStandardItem("Europe") + italy_item = QStandardItem("Italy") + rome_item = QStandardItem("Rome") + verona_item = QStandardItem("Verona") + + # building up the hierarchy + root_node.appendRow(america_item) + root_node.appendRow(europe_item) + america_item.appendRow(mexico_item) + america_item.appendRow(usa_item) + usa_item.appendRow(boston_item) + europe_item.appendRow(italy_item) + italy_item.appendRow(rome_item) + italy_item.appendRow(verona_item) + + self._tree_view.setModel(self._standard_model) + self._tree_view.expandAll() + + # selection changes shall trigger a slot + selection_model = self._tree_view.selectionModel() + selection_model.selectionChanged.connect(self.selection_changed_slot) + + @Slot(QItemSelection, QItemSelection) + def selection_changed_slot(self, new_selection, old_selection): + # get the text of the selected item + index = self._tree_view.selectionModel().currentIndex() + selected_text = index.data(Qt.DisplayRole) + # find out the hierarchy level of the selected item + hierarchy_level = 1 + seek_root = index + while seek_root.parent().isValid(): + seek_root = seek_root.parent() + hierarchy_level += 1 + self.setWindowTitle(f"{selected_text}, Level {hierarchy_level}") + + +if __name__ == '__main__': + app = QApplication(sys.argv) + w = MainWindow() + w.show() + sys.exit(app.exec()) |