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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."
##
## $QT_END_LICENSE$
##
#############################################################################
from PySide6.QtCore import QObject, QTimer, Property, Slot
from PySide6.QtQml import QmlElement, QPyQmlPropertyValueSource
# To be used on the @QmlElement decorator
# (QML_IMPORT_MINOR_VERSION is optional)
QML_IMPORT_NAME = "examples.binding.people"
QML_IMPORT_MAJOR_VERSION = 1
@QmlElement
class HappyBirthdaySong(QPyQmlPropertyValueSource):
def __init__(self, parent=None):
super().__init__(parent)
self.m_target = None
self.m_name = ""
self.m_line = -1
self.m_lyrics = []
self.m_timer = QTimer(self)
self.m_timer.timeout.connect(self.advance)
self.m_timer.start(1000)
def setTarget(self, property):
self.m_target = property
@Property(str)
def name(self):
return self.m_name
@name.setter
def name(self, n):
self.m_name = n
self.m_lyrics = ["Happy birthday to you,",
"Happy birthday to you,",
f"Happy birthday dear {self.m_name},",
"Happy birthday to you!",
""]
@Slot()
def advance(self):
self.m_line = (self.m_line + 1) % len(self.m_lyrics)
self.m_target.write(self.m_lyrics[self.m_line])
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