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Diffstat (limited to 'examples/qml/referenceexamples/default')
6 files changed, 172 insertions, 0 deletions
diff --git a/examples/qml/referenceexamples/default/birthdayparty.py b/examples/qml/referenceexamples/default/birthdayparty.py new file mode 100644 index 000000000..3c13ca6cf --- /dev/null +++ b/examples/qml/referenceexamples/default/birthdayparty.py @@ -0,0 +1,42 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from PySide6.QtCore import QObject, ClassInfo, Property +from PySide6.QtQml import QmlElement, ListProperty + +from person import Person + + +# To be used on the @QmlElement decorator +# (QML_IMPORT_MINOR_VERSION is optional) +QML_IMPORT_NAME = "examples.default.people" +QML_IMPORT_MAJOR_VERSION = 1 + + +@QmlElement +@ClassInfo(DefaultProperty="guests") +class BirthdayParty(QObject): + + def __init__(self, parent=None): + super().__init__(parent) + self._host = None + self._guests = [] + + @Property(Person) + def host(self): + return self._host + + @host.setter + def host(self, h): + self._host = h + + def guest(self, n): + return self._guests[n] + + def guestCount(self): + return len(self._guests) + + def appendGuest(self, guest): + self._guests.append(guest) + + guests = ListProperty(Person, appendGuest) diff --git a/examples/qml/referenceexamples/default/default.pyproject b/examples/qml/referenceexamples/default/default.pyproject new file mode 100644 index 000000000..3c01c40c2 --- /dev/null +++ b/examples/qml/referenceexamples/default/default.pyproject @@ -0,0 +1,3 @@ +{ + "files": ["main.py", "birthdayparty.py", "person.py", "example.qml"] +} diff --git a/examples/qml/referenceexamples/default/doc/default.rst b/examples/qml/referenceexamples/default/doc/default.rst new file mode 100644 index 000000000..1b28519a7 --- /dev/null +++ b/examples/qml/referenceexamples/default/doc/default.rst @@ -0,0 +1,30 @@ +.. _qml-default-property-example: + +Extending QML - Default Property Example +======================================== + +This example builds on the :ref:`qml-adding-types-example`, +the :ref:`qml-object-and-list-property-types-example` and +the :ref:`qml-inheritance-and-coercion-example`. + +The Default Property Example is a minor modification of the +:ref:`qml-inheritance-and-coercion-example` that simplifies the +specification of a BirthdayParty through the use of a default property. + +Declaring the BirthdayParty Class +--------------------------------- + +The only difference between this example and the last, is the addition of a +``DefaultProperty`` class info annotation. + +The default property specifies the property to assign to whenever an explicit +property is not specified, in the case of the BirthdayParty type the guest +property. It is purely a syntactic simplification, the behavior is identical +to specifying the property by name, but it can add a more natural feel in many +situations. The default property must be either an object or list property. + +Running the Example +------------------- + +The main.py file in the example includes a simple shell application that +loads and runs the QML snippet shown below. diff --git a/examples/qml/referenceexamples/default/example.qml b/examples/qml/referenceexamples/default/example.qml new file mode 100644 index 000000000..435be7860 --- /dev/null +++ b/examples/qml/referenceexamples/default/example.qml @@ -0,0 +1,15 @@ +// Copyright (C) 2021 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import examples.default.people + +BirthdayParty { + host: Boy { + name: "Bob Jones" + shoe_size: 12 + } + + Boy { name: "Leo Hodges" } + Boy { name: "Jack Smith" } + Girl { name: "Anne Brown" } +} diff --git a/examples/qml/referenceexamples/default/main.py b/examples/qml/referenceexamples/default/main.py new file mode 100644 index 000000000..a4ce2f08a --- /dev/null +++ b/examples/qml/referenceexamples/default/main.py @@ -0,0 +1,36 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +"""PySide6 port of the qml/examples/qml/referenceexamples/default example from Qt v6.x""" + +from pathlib import Path +import sys + +from PySide6.QtCore import QCoreApplication, QUrl +from PySide6.QtQml import QQmlComponent, QQmlEngine + +from person import Boy, Girl +from birthdayparty import BirthdayParty + + +app = QCoreApplication(sys.argv) +qml_file = Path(__file__).parent / "example.qml" +url = QUrl.fromLocalFile(qml_file) +engine = QQmlEngine() +component = QQmlComponent(engine, url) +party = component.create() +if not party: + print(component.errors()) + del engine + sys.exit(-1) +host = party.host +print(f"{host.name} is having a birthday!") +if isinstance(host, Boy): + print("He is inviting:") +else: + print("She is inviting:") +for g in range(party.guestCount()): + name = party.guest(g).name + print(f" {name}") +del engine +sys.exit(0) diff --git a/examples/qml/referenceexamples/default/person.py b/examples/qml/referenceexamples/default/person.py new file mode 100644 index 000000000..7164bd645 --- /dev/null +++ b/examples/qml/referenceexamples/default/person.py @@ -0,0 +1,46 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +from PySide6.QtCore import QObject, Property +from PySide6.QtQml import QmlAnonymous, QmlElement + +# To be used on the @QmlElement decorator +# (QML_IMPORT_MINOR_VERSION is optional) +QML_IMPORT_NAME = "examples.default.people" +QML_IMPORT_MAJOR_VERSION = 1 + + +@QmlAnonymous +class Person(QObject): + def __init__(self, parent=None): + super().__init__(parent) + self._name = '' + self._shoe_size = 0 + + @Property(str) + def name(self): + return self._name + + @name.setter + def name(self, n): + self._name = n + + @Property(int) + def shoe_size(self): + return self._shoe_size + + @shoe_size.setter + def shoe_size(self, s): + self._shoe_size = s + + +@QmlElement +class Boy(Person): + def __init__(self, parent=None): + super().__init__(parent) + + +@QmlElement +class Girl(Person): + def __init__(self, parent=None): + super().__init__(parent) |