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+#!/usr/bin/env python
+
+############################################################################
+##
+## 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 PySide 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_()