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#############################################################################
##
## Copyright (C) 2022 The Qt Company Ltd.
## Contact: https://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."
##
## $QT_END_LICENSE$
##
#############################################################################
"""PySide6 port of the qml/examples/qml/referenceexamples/extended example from Qt v6.x"""
from pathlib import Path
import sys
from PySide6.QtCore import QObject, QUrl, Property
from PySide6.QtWidgets import QApplication, QLineEdit
from PySide6.QtQml import (QQmlComponent, QQmlEngine, QmlForeign, QmlExtended,
QmlNamedElement)
# To be used on the @QmlElement decorator
# (QML_IMPORT_MINOR_VERSION is optional)
QML_IMPORT_NAME = "examples.extend"
QML_IMPORT_MAJOR_VERSION = 1
class LineEditExtension(QObject):
def __init__(self, parent=None):
super().__init__(parent)
self._line_edit = parent
@Property(int)
def left_margin(self):
return self._line_edit.textMargins().left()
@left_margin.setter
def left_margin(self, m):
margins = self._line_edit.textMargins()
margins.setLeft(m)
self._line_edit.setTextMargins(margins)
@Property(int)
def right_margin(self):
return self._line_edit.textMargins().right()
@right_margin.setter
def right_margin(self, m):
margins = self._line_edit.textMargins()
margins.setRight(m)
self._line_edit.setTextMargins(margins)
@Property(int)
def top_margin(self):
return self._line_edit.textMargins().top()
@top_margin.setter
def top_margin(self, m):
margins = self._line_edit.textMargins()
margins.setTop(m)
self._line_edit.setTextMargins(margins)
@Property(int)
def bottom_margin(self):
return self._line_edit.textMargins().bottom()
@bottom_margin.setter
def bottom_margin(self, m):
margins = self._line_edit.textMargins()
margins.setBottom(m)
self._line_edit.setTextMargins(margins)
@QmlNamedElement("QLineEdit")
@QmlExtended(LineEditExtension)
@QmlForeign(QLineEdit)
class LineEditForeign(QObject):
def __init__(self, parent=None):
super().__init__(parent)
if __name__ == '__main__':
app = QApplication(sys.argv)
qml_file = Path(__file__).parent / "example.qml"
url = QUrl.fromLocalFile(qml_file)
engine = QQmlEngine()
component = QQmlComponent(engine, url)
widget = component.create()
if not widget:
print(component.errors())
del engine
sys.exit(-1)
widget.show()
r = app.exec()
# Deleting the engine before it goes out of scope is required to make sure
# all child QML instances are destroyed in the correct order.
del engine
sys.exit(r)
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