Move examples from submodule to pyside-setup

Move PySide2 examples that are owned by the Qt Company
to a new examples directory.

Done-with: Venugopal Shivashankar <Venugopal.Shivashankar@qt.io>
Task-number: PYSIDE-363
Change-Id: I14099764d9eef2bc35e067086121427955862e3a
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

6 files changed, 677 insertions, 0 deletions

diff --git a/examples/widgets/painting/basicdrawing/basicdrawing.py b/examples/widgets/painting/basicdrawing/basicdrawing.py
new file mode 100755
index 000000000..c2f3e672c
--- /dev/null
+++ b/examples/widgets/painting/basicdrawing/basicdrawing.py
@@ -0,0 +1,350 @@
+#!/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/painting/basicdrawing example from Qt v5.x, originating from PyQt"""
+
+from PySide2.QtCore import QPoint, QRect, QSize, Qt, qVersion
+from PySide2.QtGui import (QBrush, QConicalGradient, QLinearGradient, QPainter,
+        QPainterPath, QPalette, QPen, QPixmap, QPolygon, QRadialGradient)
+from PySide2.QtWidgets import (QApplication, QCheckBox, QComboBox, QGridLayout,
+        QLabel, QSpinBox, QWidget)
+
+import basicdrawing_rc
+
+
+class RenderArea(QWidget):
+    points = QPolygon([
+        QPoint(10, 80),
+        QPoint(20, 10),
+        QPoint(80, 30),
+        QPoint(90, 70)
+    ])
+
+    Line, Points, Polyline, Polygon, Rect, RoundedRect, Ellipse, Arc, Chord, \
+            Pie, Path, Text, Pixmap = range(13)
+
+    def __init__(self, parent=None):
+        super(RenderArea, self).__init__(parent)
+
+        self.pen = QPen()
+        self.brush = QBrush()
+        self.pixmap = QPixmap()
+
+        self.shape = RenderArea.Polygon
+        self.antialiased = False
+        self.transformed = False
+        self.pixmap.load(':/images/qt-logo.png')
+
+        self.setBackgroundRole(QPalette.Base)
+        self.setAutoFillBackground(True)
+
+    def minimumSizeHint(self):
+        return QSize(100, 100)
+
+    def sizeHint(self):
+        return QSize(400, 200)
+
+    def setShape(self, shape):
+        self.shape = shape
+        self.update()
+
+    def setPen(self, pen):
+        self.pen = pen
+        self.update()
+
+    def setBrush(self, brush):
+        self.brush = brush
+        self.update()
+
+    def setAntialiased(self, antialiased):
+        self.antialiased = antialiased
+        self.update()
+
+    def setTransformed(self, transformed):
+        self.transformed = transformed
+        self.update()
+
+    def paintEvent(self, event):
+        rect = QRect(10, 20, 80, 60)
+
+        path = QPainterPath()
+        path.moveTo(20, 80)
+        path.lineTo(20, 30)
+        path.cubicTo(80, 0, 50, 50, 80, 80)
+
+        startAngle = 30 * 16
+        arcLength = 120 * 16
+
+        painter = QPainter(self)
+        painter.setPen(self.pen)
+        painter.setBrush(self.brush)
+        if self.antialiased:
+            painter.setRenderHint(QPainter.Antialiasing)
+
+        for x in range(0, self.width(), 100):
+            for y in range(0, self.height(), 100):
+                painter.save()
+                painter.translate(x, y)
+                if self.transformed:
+                    painter.translate(50, 50)
+                    painter.rotate(60.0)
+                    painter.scale(0.6, 0.9)
+                    painter.translate(-50, -50)
+
+                if self.shape == RenderArea.Line:
+                    painter.drawLine(rect.bottomLeft(), rect.topRight())
+                elif self.shape == RenderArea.Points:
+                    painter.drawPoints(RenderArea.points)
+                elif self.shape == RenderArea.Polyline:
+                    painter.drawPolyline(RenderArea.points)
+                elif self.shape == RenderArea.Polygon:
+                    painter.drawPolygon(RenderArea.points)
+                elif self.shape == RenderArea.Rect:
+                    painter.drawRect(rect)
+                elif self.shape == RenderArea.RoundedRect:
+                    painter.drawRoundedRect(rect, 25, 25, Qt.RelativeSize)
+                elif self.shape == RenderArea.Ellipse:
+                    painter.drawEllipse(rect)
+                elif self.shape == RenderArea.Arc:
+                    painter.drawArc(rect, startAngle, arcLength)
+                elif self.shape == RenderArea.Chord:
+                    painter.drawChord(rect, startAngle, arcLength)
+                elif self.shape == RenderArea.Pie:
+                    painter.drawPie(rect, startAngle, arcLength)
+                elif self.shape == RenderArea.Path:
+                    painter.drawPath(path)
+                elif self.shape == RenderArea.Text:
+                    painter.drawText(rect, Qt.AlignCenter,
+                                     "PySide 2\nQt %s" % qVersion())
+                elif self.shape == RenderArea.Pixmap:
+                    painter.drawPixmap(10, 10, self.pixmap)
+
+                painter.restore()
+
+        painter.setPen(self.palette().dark().color())
+        painter.setBrush(Qt.NoBrush)
+        painter.drawRect(QRect(0, 0, self.width() - 1, self.height() - 1))
+
+
+IdRole = Qt.UserRole
+
+class Window(QWidget):
+    def __init__(self):
+        super(Window, self).__init__()
+
+        self.renderArea = RenderArea()
+
+        self.shapeComboBox = QComboBox()
+        self.shapeComboBox.addItem("Polygon", RenderArea.Polygon)
+        self.shapeComboBox.addItem("Rectangle", RenderArea.Rect)
+        self.shapeComboBox.addItem("Rounded Rectangle", RenderArea.RoundedRect)
+        self.shapeComboBox.addItem("Ellipse", RenderArea.Ellipse)
+        self.shapeComboBox.addItem("Pie", RenderArea.Pie)
+        self.shapeComboBox.addItem("Chord", RenderArea.Chord)
+        self.shapeComboBox.addItem("Path", RenderArea.Path)
+        self.shapeComboBox.addItem("Line", RenderArea.Line)
+        self.shapeComboBox.addItem("Polyline", RenderArea.Polyline)
+        self.shapeComboBox.addItem("Arc", RenderArea.Arc)
+        self.shapeComboBox.addItem("Points", RenderArea.Points)
+        self.shapeComboBox.addItem("Text", RenderArea.Text)
+        self.shapeComboBox.addItem("Pixmap", RenderArea.Pixmap)
+
+        shapeLabel = QLabel("&Shape:")
+        shapeLabel.setBuddy(self.shapeComboBox)
+
+        self.penWidthSpinBox = QSpinBox()
+        self.penWidthSpinBox.setRange(0, 20)
+        self.penWidthSpinBox.setSpecialValueText("0 (cosmetic pen)")
+
+        penWidthLabel = QLabel("Pen &Width:")
+        penWidthLabel.setBuddy(self.penWidthSpinBox)
+
+        self.penStyleComboBox = QComboBox()
+        self.penStyleComboBox.addItem("Solid", Qt.SolidLine)
+        self.penStyleComboBox.addItem("Dash", Qt.DashLine)
+        self.penStyleComboBox.addItem("Dot", Qt.DotLine)
+        self.penStyleComboBox.addItem("Dash Dot", Qt.DashDotLine)
+        self.penStyleComboBox.addItem("Dash Dot Dot", Qt.DashDotDotLine)
+        self.penStyleComboBox.addItem("None", Qt.NoPen)
+
+        penStyleLabel = QLabel("&Pen Style:")
+        penStyleLabel.setBuddy(self.penStyleComboBox)
+
+        self.penCapComboBox = QComboBox()
+        self.penCapComboBox.addItem("Flat", Qt.FlatCap)
+        self.penCapComboBox.addItem("Square", Qt.SquareCap)
+        self.penCapComboBox.addItem("Round", Qt.RoundCap)
+
+        penCapLabel = QLabel("Pen &Cap:")
+        penCapLabel.setBuddy(self.penCapComboBox)
+
+        self.penJoinComboBox = QComboBox()
+        self.penJoinComboBox.addItem("Miter", Qt.MiterJoin)
+        self.penJoinComboBox.addItem("Bevel", Qt.BevelJoin)
+        self.penJoinComboBox.addItem("Round", Qt.RoundJoin)
+
+        penJoinLabel = QLabel("Pen &Join:")
+        penJoinLabel.setBuddy(self.penJoinComboBox)
+
+        self.brushStyleComboBox = QComboBox()
+        self.brushStyleComboBox.addItem("Linear Gradient",
+                Qt.LinearGradientPattern)
+        self.brushStyleComboBox.addItem("Radial Gradient",
+                Qt.RadialGradientPattern)
+        self.brushStyleComboBox.addItem("Conical Gradient",
+                Qt.ConicalGradientPattern)
+        self.brushStyleComboBox.addItem("Texture", Qt.TexturePattern)
+        self.brushStyleComboBox.addItem("Solid", Qt.SolidPattern)
+        self.brushStyleComboBox.addItem("Horizontal", Qt.HorPattern)
+        self.brushStyleComboBox.addItem("Vertical", Qt.VerPattern)
+        self.brushStyleComboBox.addItem("Cross", Qt.CrossPattern)
+        self.brushStyleComboBox.addItem("Backward Diagonal", Qt.BDiagPattern)
+        self.brushStyleComboBox.addItem("Forward Diagonal", Qt.FDiagPattern)
+        self.brushStyleComboBox.addItem("Diagonal Cross", Qt.DiagCrossPattern)
+        self.brushStyleComboBox.addItem("Dense 1", Qt.Dense1Pattern)
+        self.brushStyleComboBox.addItem("Dense 2", Qt.Dense2Pattern)
+        self.brushStyleComboBox.addItem("Dense 3", Qt.Dense3Pattern)
+        self.brushStyleComboBox.addItem("Dense 4", Qt.Dense4Pattern)
+        self.brushStyleComboBox.addItem("Dense 5", Qt.Dense5Pattern)
+        self.brushStyleComboBox.addItem("Dense 6", Qt.Dense6Pattern)
+        self.brushStyleComboBox.addItem("Dense 7", Qt.Dense7Pattern)
+        self.brushStyleComboBox.addItem("None", Qt.NoBrush)
+
+        brushStyleLabel = QLabel("&Brush Style:")
+        brushStyleLabel.setBuddy(self.brushStyleComboBox)
+
+        otherOptionsLabel = QLabel("Other Options:")
+        self.antialiasingCheckBox = QCheckBox("&Antialiasing")
+        self.transformationsCheckBox = QCheckBox("&Transformations")
+
+        self.shapeComboBox.activated.connect(self.shapeChanged)
+        self.penWidthSpinBox.valueChanged.connect(self.penChanged)
+        self.penStyleComboBox.activated.connect(self.penChanged)
+        self.penCapComboBox.activated.connect(self.penChanged)
+        self.penJoinComboBox.activated.connect(self.penChanged)
+        self.brushStyleComboBox.activated.connect(self.brushChanged)
+        self.antialiasingCheckBox.toggled.connect(self.renderArea.setAntialiased)
+        self.transformationsCheckBox.toggled.connect(self.renderArea.setTransformed)
+
+        mainLayout = QGridLayout()
+        mainLayout.setColumnStretch(0, 1)
+        mainLayout.setColumnStretch(3, 1)
+        mainLayout.addWidget(self.renderArea, 0, 0, 1, 4)
+        mainLayout.setRowMinimumHeight(1, 6)
+        mainLayout.addWidget(shapeLabel, 2, 1, Qt.AlignRight)
+        mainLayout.addWidget(self.shapeComboBox, 2, 2)
+        mainLayout.addWidget(penWidthLabel, 3, 1, Qt.AlignRight)
+        mainLayout.addWidget(self.penWidthSpinBox, 3, 2)
+        mainLayout.addWidget(penStyleLabel, 4, 1, Qt.AlignRight)
+        mainLayout.addWidget(self.penStyleComboBox, 4, 2)
+        mainLayout.addWidget(penCapLabel, 5, 1, Qt.AlignRight)
+        mainLayout.addWidget(self.penCapComboBox, 5, 2)
+        mainLayout.addWidget(penJoinLabel, 6, 1, Qt.AlignRight)
+        mainLayout.addWidget(self.penJoinComboBox, 6, 2)
+        mainLayout.addWidget(brushStyleLabel, 7, 1, Qt.AlignRight)
+        mainLayout.addWidget(self.brushStyleComboBox, 7, 2)
+        mainLayout.setRowMinimumHeight(8, 6)
+        mainLayout.addWidget(otherOptionsLabel, 9, 1, Qt.AlignRight)
+        mainLayout.addWidget(self.antialiasingCheckBox, 9, 2)
+        mainLayout.addWidget(self.transformationsCheckBox, 10, 2)
+        self.setLayout(mainLayout)
+
+        self.shapeChanged()
+        self.penChanged()
+        self.brushChanged()
+        self.antialiasingCheckBox.setChecked(True)
+
+        self.setWindowTitle("Basic Drawing")
+
+    def shapeChanged(self):
+        shape = self.shapeComboBox.itemData(self.shapeComboBox.currentIndex(),
+                IdRole)
+        self.renderArea.setShape(shape)
+
+    def penChanged(self):
+        width = self.penWidthSpinBox.value()
+        style = Qt.PenStyle(self.penStyleComboBox.itemData(
+                self.penStyleComboBox.currentIndex(), IdRole))
+        cap = Qt.PenCapStyle(self.penCapComboBox.itemData(
+                self.penCapComboBox.currentIndex(), IdRole))
+        join = Qt.PenJoinStyle(self.penJoinComboBox.itemData(
+                self.penJoinComboBox.currentIndex(), IdRole))
+
+        self.renderArea.setPen(QPen(Qt.blue, width, style, cap, join))
+
+    def brushChanged(self):
+        style = Qt.BrushStyle(self.brushStyleComboBox.itemData(
+                self.brushStyleComboBox.currentIndex(), IdRole))
+
+        if style == Qt.LinearGradientPattern:
+            linearGradient = QLinearGradient(0, 0, 100, 100)
+            linearGradient.setColorAt(0.0, Qt.white)
+            linearGradient.setColorAt(0.2, Qt.green)
+            linearGradient.setColorAt(1.0, Qt.black)
+            self.renderArea.setBrush(QBrush(linearGradient))
+        elif style == Qt.RadialGradientPattern:
+            radialGradient = QRadialGradient(50, 50, 50, 70, 70)
+            radialGradient.setColorAt(0.0, Qt.white)
+            radialGradient.setColorAt(0.2, Qt.green)
+            radialGradient.setColorAt(1.0, Qt.black)
+            self.renderArea.setBrush(QBrush(radialGradient))
+        elif style == Qt.ConicalGradientPattern:
+            conicalGradient = QConicalGradient(50, 50, 150)
+            conicalGradient.setColorAt(0.0, Qt.white)
+            conicalGradient.setColorAt(0.2, Qt.green)
+            conicalGradient.setColorAt(1.0, Qt.black)
+            self.renderArea.setBrush(QBrush(conicalGradient))
+        elif style == Qt.TexturePattern:
+            self.renderArea.setBrush(QBrush(QPixmap(':/images/brick.png')))
+        else:
+            self.renderArea.setBrush(QBrush(Qt.green, style))
+
+
+if __name__ == '__main__':
+
+    import sys
+
+    app = QApplication(sys.argv)
+    window = Window()
+    window.show()
+    sys.exit(app.exec_())
diff --git a/examples/widgets/painting/basicdrawing/basicdrawing.qrc b/examples/widgets/painting/basicdrawing/basicdrawing.qrc
new file mode 100644
index 000000000..9d8a23a1c
--- /dev/null
+++ b/examples/widgets/painting/basicdrawing/basicdrawing.qrc
@@ -0,0 +1,6 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource>
+    <file>images/brick.png</file>
+    <file>images/qt-logo.png</file>
+</qresource>
+</RCC>
diff --git a/examples/widgets/painting/basicdrawing/basicdrawing_rc.py b/examples/widgets/painting/basicdrawing/basicdrawing_rc.py
new file mode 100644
index 000000000..b9de90387
--- /dev/null
+++ b/examples/widgets/painting/basicdrawing/basicdrawing_rc.py
@@ -0,0 +1,174 @@
+#############################################################################
+##
+## 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."
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+# Resource object code
+#
+# Created: Wed Dec 28 19:54:31 2005
+#      by: The Resource Compiler for PyQt (Qt v4.1.0)
+#
+# WARNING! All changes made in this file will be lost!
+
+from PySide2 import QtCore
+
+qt_resource_data = b"\
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+"
+
+qt_resource_name = b"\
+\x00\x06\
+\x07\x03\x7d\xc3\
+\x00\x69\
+\x00\x6d\x00\x61\x00\x67\x00\x65\x00\x73\
+\x00\x09\
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+\x00\x0b\
+\x05\x52\xbf\x27\
+\x00\x71\
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+"
+
+qt_resource_struct = b"\
+\x00\x00\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x00\x01\
+\x00\x00\x00\x00\x00\x02\x00\x00\x00\x02\x00\x00\x00\x02\
+\x00\x00\x00\x2a\x00\x00\x00\x00\x00\x01\x00\x00\x03\x5c\
+\x00\x00\x00\x12\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\
+"
+
+def qInitResources():
+    QtCore.qRegisterResourceData(0x01, qt_resource_struct, qt_resource_name, qt_resource_data)
+
+def qCleanupResources():
+    QtCore.qUnregisterResourceData(0x01, qt_resource_struct, qt_resource_name, qt_resource_data)
+
+qInitResources()
diff --git a/examples/widgets/painting/basicdrawing/images/brick.png b/examples/widgets/painting/basicdrawing/images/brick.png
new file mode 100644
index 000000000..ab5e383dc
--- /dev/null
+++ b/examples/widgets/painting/basicdrawing/images/brick.png
diff --git a/examples/widgets/painting/basicdrawing/images/qt-logo.png b/examples/widgets/painting/basicdrawing/images/qt-logo.png
new file mode 100644
index 000000000..9c27cf63a
--- /dev/null
+++ b/examples/widgets/painting/basicdrawing/images/qt-logo.png
diff --git a/examples/widgets/painting/concentriccircles.py b/examples/widgets/painting/concentriccircles.py
new file mode 100755
index 000000000..5fecfc0b5
--- /dev/null
+++ b/examples/widgets/painting/concentriccircles.py
@@ -0,0 +1,147 @@
+#!/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/painting/concentriccircles example from Qt v5.x, originating from PyQt"""
+
+from PySide2.QtCore import QRect, QRectF, QSize, Qt, QTimer
+from PySide2.QtGui import QColor, QPainter, QPalette, QPen
+from PySide2.QtWidgets import (QApplication, QFrame, QGridLayout, QLabel,
+        QSizePolicy, QWidget)
+
+
+class CircleWidget(QWidget):
+    def __init__(self, parent=None):
+        super(CircleWidget, self).__init__(parent)
+
+        self.floatBased = False
+        self.antialiased = False
+        self.frameNo = 0
+
+        self.setBackgroundRole(QPalette.Base)
+        self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
+
+    def setFloatBased(self, floatBased):
+        self.floatBased = floatBased
+        self.update()
+
+    def setAntialiased(self, antialiased):
+        self.antialiased = antialiased
+        self.update()
+
+    def minimumSizeHint(self):
+        return QSize(50, 50)
+
+    def sizeHint(self):
+        return QSize(180, 180)
+
+    def nextAnimationFrame(self):
+        self.frameNo += 1
+        self.update()
+
+    def paintEvent(self, event):
+        painter = QPainter(self)
+        painter.setRenderHint(QPainter.Antialiasing, self.antialiased)
+        painter.translate(self.width() / 2, self.height() / 2)
+
+        for diameter in range(0, 256, 9):
+            delta = abs((self.frameNo % 128) - diameter / 2)
+            alpha = 255 - (delta * delta) / 4 - diameter
+            if alpha > 0:
+                painter.setPen(QPen(QColor(0, diameter / 2, 127, alpha), 3))
+
+                if self.floatBased:
+                    painter.drawEllipse(QRectF(-diameter / 2.0,
+                            -diameter / 2.0, diameter, diameter))
+                else:
+                    painter.drawEllipse(QRect(-diameter / 2,
+                            -diameter / 2, diameter, diameter))
+
+
+class Window(QWidget):
+    def __init__(self):
+        super(Window, self).__init__()
+
+        aliasedLabel = self.createLabel("Aliased")
+        antialiasedLabel = self.createLabel("Antialiased")
+        intLabel = self.createLabel("Int")
+        floatLabel = self.createLabel("Float")
+
+        layout = QGridLayout()
+        layout.addWidget(aliasedLabel, 0, 1)
+        layout.addWidget(antialiasedLabel, 0, 2)
+        layout.addWidget(intLabel, 1, 0)
+        layout.addWidget(floatLabel, 2, 0)
+
+        timer = QTimer(self)
+
+        for i in range(2):
+            for j in range(2):
+                w = CircleWidget()
+                w.setAntialiased(j != 0)
+                w.setFloatBased(i != 0)
+
+                timer.timeout.connect(w.nextAnimationFrame)
+
+                layout.addWidget(w, i + 1, j + 1)
+
+        timer.start(100)
+        self.setLayout(layout)
+
+        self.setWindowTitle("Concentric Circles")
+
+    def createLabel(self, text):
+        label = QLabel(text)
+        label.setAlignment(Qt.AlignCenter)
+        label.setMargin(2)
+        label.setFrameStyle(QFrame.Box | QFrame.Sunken)
+        return label
+
+
+if __name__ == '__main__':
+
+    import sys
+
+    app = QApplication(sys.argv)
+    window = Window()
+    window.show()
+    sys.exit(app.exec_())