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#############################################################################
##
## Copyright (C) 2013 Riverbank Computing Limited.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:LGPL$
## Commercial Usage
## Licensees holding valid Qt Commercial licenses may use this file in
## accordance with the Qt Commercial License Agreement provided with the
## Software or, alternatively, in accordance with the terms contained in
## a written agreement between you and Nokia.
##
## GNU Lesser General Public License Usage
## Alternatively, this file may be used under the terms of the GNU Lesser
## General Public License version 2.1 as published by the Free Software
## Foundation and appearing in the file LICENSE.LGPL included in the
## packaging of this file. Please review the following information to
## ensure the GNU Lesser General Public License version 2.1 requirements
## will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
##
## In addition, as a special exception, Nokia gives you certain additional
## rights. These rights are described in the Nokia Qt LGPL Exception
## version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
##
## GNU General Public License Usage
## Alternatively, this file may be used under the terms of the GNU
## General Public License version 3.0 as published by the Free Software
## Foundation and appearing in the file LICENSE.GPL included in the
## packaging of this file. Please review the following information to
## ensure the GNU General Public License version 3.0 requirements will be
## met: http://www.gnu.org/copyleft/gpl.html.
##
## If you have questions regarding the use of this file, please contact
## Nokia at qt-info@nokia.com.
## $QT_END_LICENSE$
##
#############################################################################
from PyQt5.QtCore import QPropertyAnimation, QTimer
from colors import Colors
class DemoItemAnimation(QPropertyAnimation):
ANIM_IN, ANIM_OUT, ANIM_UNSPECIFIED = range(3)
def __init__(self, item, inOrOut=ANIM_UNSPECIFIED):
super(DemoItemAnimation, self).__init__(item, b'pos')
self._startDelay = 0
self._inOrOut = inOrOut
self._hideOnFinished = False
def prepare(self):
self.targetObject().prepare()
def setHideOnFinished(self, hide):
self._hideOnFinshed = hide
def setStartDelay(self, delay):
self._startDelay = delay
def setDuration(self, duration):
duration = int(duration * Colors.animSpeed)
super(DemoItemAnimation, self).setDuration(duration)
def notOwnerOfItem(self):
return self is not self.targetObject().currentAnimation
def play(self, fromStart=True, force=False):
item = self.targetObject()
# If the item that this animation controls in currently under the
# control of another animation, stop that animation first.
if item.currentAnimation is not None:
item.currentAnimation.stop()
item.currentAnimation = self
if Colors.noAnimations and not force:
# If animations are disabled just move to the end position.
item.setPos(self.endValue())
else:
if self.isVisible():
# If the item is already visible, start the animation from the
# item's current position rather than from the start.
self.setStartValue(item.pos())
if fromStart:
self.setCurrentTime(0)
item.setPos(self.startValue())
if self._inOrOut == DemoItemAnimation.ANIM_IN:
item.setRecursiveVisible(True)
if not Colors.noAnimations or force:
if self._startDelay:
QTimer.singleShot(self._startDelay, self.start)
else:
self.start()
def setCurveShape(self, shape):
self.setEasingCurve(shape)
def setEnabled(self, enabled):
self.targetObject().setEnabled(enabled)
def isVisible(self):
return self.targetObject().isVisible()
def updateState(self, new, old):
item = self.targetObject()
if new == QPropertyAnimation.Running:
item.animationStarted(self._inOrOut)
elif new == QPropertyAnimation.Stopped:
if self._hideOnFinished:
item.setRecursiveVisible(False)
item.animationStopped(self._inOrOut)
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