examples: add example with arguments parameter in Signal

Pick-to: 6.0
Change-Id: Ib6f19b5bad1644fb5eb062a5cbe512db2f2a8adc
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>

3 files changed, 151 insertions, 0 deletions

diff --git a/examples/declarative/signals/pytoqml2/main.py b/examples/declarative/signals/pytoqml2/main.py
new file mode 100644
index 000000000..7d86d1b3d
--- /dev/null
+++ b/examples/declarative/signals/pytoqml2/main.py
@@ -0,0 +1,84 @@
+
+#############################################################################
+##
+## Copyright (C) 2021 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."
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+import os
+import sys
+from PySide6.QtCore import QObject, QTimer, QUrl, Signal, Slot
+from PySide6.QtGui import QGuiApplication
+from PySide6.QtQuick import QQuickView
+
+
+class RotateValue(QObject):
+    valueChanged = Signal(int, arguments=['val'])
+
+    def __init__(self):
+        super(RotateValue, self).__init__()
+        self.r = 0
+
+    @Slot()
+    def increment(self):
+        self.r = self.r + 10
+        self.valueChanged.emit(self.r)
+
+
+if __name__ == '__main__':
+    app = QGuiApplication(sys.argv)
+    view = QQuickView()
+
+    rotatevalue = RotateValue()
+    timer = QTimer()
+    timer.start(2000)
+    context = view.rootContext()
+    context.setContextProperty("rotatevalue", rotatevalue)
+
+    qmlFile = os.path.join(os.path.dirname(__file__), 'view.qml')
+    view.setSource(QUrl.fromLocalFile(os.path.abspath(qmlFile)))
+    if view.status() == QQuickView.Error:
+        sys.exit(-1)
+
+    timer.timeout.connect(rotatevalue.increment)
+
+    view.show()
+    res = app.exec_()
+    # Deleting the view before it goes out of scope is required to make
+    # sure all child QML instances are destroyed in the correct order.
+    del view
+    sys.exit(res)
diff --git a/examples/declarative/signals/pytoqml2/pytoqml2.pyproject b/examples/declarative/signals/pytoqml2/pytoqml2.pyproject
new file mode 100644
index 000000000..e6f087cce
--- /dev/null
+++ b/examples/declarative/signals/pytoqml2/pytoqml2.pyproject
@@ -0,0 +1,3 @@
+{
+    "files": ["main.py", "view.qml"]
+}
diff --git a/examples/declarative/signals/pytoqml2/view.qml b/examples/declarative/signals/pytoqml2/view.qml
new file mode 100644
index 000000000..41b185af0
--- /dev/null
+++ b/examples/declarative/signals/pytoqml2/view.qml
@@ -0,0 +1,64 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 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."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+import QtQml 2.0
+
+Rectangle {
+    id: page
+
+    width: 500; height: 200
+    color: "lightgray"
+
+    Text {
+        id: helloText
+        text: "Hello world!"
+        anchors.horizontalCenter: page.horizontalCenter
+        y: 30
+        font.pointSize: 24; font.bold: true
+    }
+
+    Connections {
+        target: rotatevalue
+        function onValueChanged(val) {
+            helloText.rotation = val
+        }
+    }
+}