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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "fullscreennotification.h"
#include <QGraphicsOpacityEffect>
#include <QPropertyAnimation>
#include <QSequentialAnimationGroup>
FullScreenNotification::FullScreenNotification(QWidget *parent)
: QLabel(parent)
, m_previouslyVisible(false)
{
setText(tr("You are now in full screen mode. Press ESC to quit!"));
setStyleSheet(
"font-size: 24px;"
"color: white;"
"background-color: black;"
"border-color: white;"
"border-width: 2px;"
"border-style: solid;"
"padding: 100px");
setAttribute(Qt::WA_TransparentForMouseEvents);
auto effect = new QGraphicsOpacityEffect;
effect->setOpacity(1);
setGraphicsEffect(effect);
auto animations = new QSequentialAnimationGroup(this);
animations->addPause(3000);
auto opacityAnimation = new QPropertyAnimation(effect, "opacity", animations);
opacityAnimation->setDuration(2000);
opacityAnimation->setStartValue(1.0);
opacityAnimation->setEndValue(0.0);
opacityAnimation->setEasingCurve(QEasingCurve::OutQuad);
animations->addAnimation(opacityAnimation);
connect(this, &FullScreenNotification::shown,
[animations](){ animations->start(); });
connect(animations, &QAbstractAnimation::finished,
[this](){ this->hide(); });
}
void FullScreenNotification::showEvent(QShowEvent *event)
{
QLabel::showEvent(event);
if (!m_previouslyVisible && isVisible())
emit shown();
m_previouslyVisible = isVisible();
}
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