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-
-############################################################################
-##
-## Copyright (C) 2013 Riverbank Computing Limited.
-## Copyright (C) 2016 The Qt Company Ltd.
-## Contact: http://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."
-##
-## $QT_END_LICENSE$
-##
-#############################################################################
-
-"""PySide2 port of the widgets/layouts/dynamiclayouts example from Qt v5.x"""
-
-from PySide2.QtCore import Qt, QSize
-from PySide2.QtWidgets import (QApplication, QDialog, QLayout, QGridLayout,
- QMessageBox, QGroupBox, QSpinBox, QSlider,
- QProgressBar, QDial, QDialogButtonBox,
- QComboBox, QLabel)
-
-class Dialog(QDialog):
- def __init__(self):
- super(Dialog, self).__init__()
-
- self.rotableWidgets = []
-
- self.createRotableGroupBox()
- self.createOptionsGroupBox()
- self.createButtonBox()
-
- mainLayout = QGridLayout()
- mainLayout.addWidget(self.rotableGroupBox, 0, 0)
- mainLayout.addWidget(self.optionsGroupBox, 1, 0)
- mainLayout.addWidget(self.buttonBox, 2, 0)
- mainLayout.setSizeConstraint(QLayout.SetMinimumSize)
-
- self.mainLayout = mainLayout
- self.setLayout(self.mainLayout)
-
- self.setWindowTitle("Dynamic Layouts")
-
- def rotateWidgets(self):
- count = len(self.rotableWidgets)
- if count % 2 == 1:
- raise AssertionError("Number of widgets must be even")
-
- for widget in self.rotableWidgets:
- self.rotableLayout.removeWidget(widget)
-
- self.rotableWidgets.append(self.rotableWidgets.pop(0))
-
- for i in range(count//2):
- self.rotableLayout.addWidget(self.rotableWidgets[count - i - 1], 0, i)
- self.rotableLayout.addWidget(self.rotableWidgets[i], 1, i)
-
-
- def buttonsOrientationChanged(self, index):
- self.mainLayout.setSizeConstraint(QLayout.SetNoConstraint)
- self.setMinimumSize(0, 0)
-
- orientation = Qt.Orientation(int(self.buttonsOrientationComboBox.itemData(index)))
-
- if orientation == self.buttonBox.orientation():
- return
-
- self.mainLayout.removeWidget(self.buttonBox)
-
- spacing = self.mainLayout.spacing()
-
- oldSizeHint = self.buttonBox.sizeHint() + QSize(spacing, spacing)
- self.buttonBox.setOrientation(orientation)
- newSizeHint = self.buttonBox.sizeHint() + QSize(spacing, spacing)
-
- if orientation == Qt.Horizontal:
- self.mainLayout.addWidget(self.buttonBox, 2, 0)
- self.resize(self.size() + QSize(-oldSizeHint.width(), newSizeHint.height()))
- else:
- self.mainLayout.addWidget(self.buttonBox, 0, 3, 2, 1)
- self.resize(self.size() + QSize(newSizeHint.width(), -oldSizeHint.height()))
-
- self.mainLayout.setSizeConstraint(QLayout.SetDefaultConstraint)
-
- def show_help(self):
- QMessageBox.information(self, "Dynamic Layouts Help",
- "This example shows how to change layouts "
- "dynamically.")
-
- def createRotableGroupBox(self):
- self.rotableGroupBox = QGroupBox("Rotable Widgets")
-
- self.rotableWidgets.append(QSpinBox())
- self.rotableWidgets.append(QSlider())
- self.rotableWidgets.append(QDial())
- self.rotableWidgets.append(QProgressBar())
- count = len(self.rotableWidgets)
- for i in range(count):
- self.rotableWidgets[i].valueChanged[int].\
- connect(self.rotableWidgets[(i+1) % count].setValue)
-
- self.rotableLayout = QGridLayout()
- self.rotableGroupBox.setLayout(self.rotableLayout)
-
- self.rotateWidgets()
-
- def createOptionsGroupBox(self):
- self.optionsGroupBox = QGroupBox("Options")
-
- buttonsOrientationLabel = QLabel("Orientation of buttons:")
-
- buttonsOrientationComboBox = QComboBox()
- buttonsOrientationComboBox.addItem("Horizontal", Qt.Horizontal)
- buttonsOrientationComboBox.addItem("Vertical", Qt.Vertical)
- buttonsOrientationComboBox.currentIndexChanged[int].connect(self.buttonsOrientationChanged)
-
- self.buttonsOrientationComboBox = buttonsOrientationComboBox
-
- optionsLayout = QGridLayout()
- optionsLayout.addWidget(buttonsOrientationLabel, 0, 0)
- optionsLayout.addWidget(self.buttonsOrientationComboBox, 0, 1)
- optionsLayout.setColumnStretch(2, 1)
- self.optionsGroupBox.setLayout(optionsLayout)
-
- def createButtonBox(self):
- self.buttonBox = QDialogButtonBox()
-
- closeButton = self.buttonBox.addButton(QDialogButtonBox.Close)
- helpButton = self.buttonBox.addButton(QDialogButtonBox.Help)
- rotateWidgetsButton = self.buttonBox.addButton("Rotate &Widgets", QDialogButtonBox.ActionRole)
-
- rotateWidgetsButton.clicked.connect(self.rotateWidgets)
- closeButton.clicked.connect(self.close)
- helpButton.clicked.connect(self.show_help)
-
-
-if __name__ == '__main__':
- import sys
-
- app = QApplication(sys.argv)
- dialog = Dialog()
- dialog.exec_()