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94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
/*
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Copyright © 2014-2019 by The qTox Project Contributors
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This file is part of qTox, a Qt-based graphical interface for Tox.
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qTox is libre software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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qTox is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with qTox. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "spinner.h"
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#include "../pixmapcache.h"
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#include <QDebug>
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#include <QGraphicsScene>
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#include <QPainter>
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#include <QTime>
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#include <QVariantAnimation>
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Spinner::Spinner(const QString& img, QSize Size, qreal speed)
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: size(Size)
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, rotSpeed(speed)
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{
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pmap = PixmapCache::getInstance().get(img, size);
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timer.setInterval(1000 / 30); // 30Hz
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timer.setSingleShot(false);
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blendAnimation = new QVariantAnimation(this);
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blendAnimation->setStartValue(0.0);
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blendAnimation->setEndValue(1.0);
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blendAnimation->setDuration(350);
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blendAnimation->setEasingCurve(QEasingCurve::InCubic);
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blendAnimation->start(QAbstractAnimation::DeleteWhenStopped);
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connect(blendAnimation, &QVariantAnimation::valueChanged, this,
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[this](const QVariant& val) { alpha = val.toDouble(); });
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QObject::connect(&timer, &QTimer::timeout, this, &Spinner::timeout);
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}
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QRectF Spinner::boundingRect() const
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{
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return QRectF(QPointF(-size.width() / 2.0, -size.height() / 2.0), size);
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}
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void Spinner::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
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{
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painter->setClipRect(boundingRect());
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QTransform trans = QTransform()
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.rotate(QTime::currentTime().msecsSinceStartOfDay() / 1000.0 * rotSpeed)
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.translate(-size.width() / 2.0, -size.height() / 2.0);
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painter->setOpacity(alpha);
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painter->setTransform(trans, true);
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painter->setRenderHint(QPainter::SmoothPixmapTransform);
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painter->drawPixmap(0, 0, pmap);
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Q_UNUSED(option)
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Q_UNUSED(widget)
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}
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void Spinner::setWidth(qreal width)
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{
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Q_UNUSED(width)
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}
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void Spinner::visibilityChanged(bool visible)
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{
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if (visible)
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timer.start();
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else
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timer.stop();
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}
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qreal Spinner::getAscent() const
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{
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return 0.0;
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}
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void Spinner::timeout()
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{
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if (scene())
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scene()->invalidate(sceneBoundingRect());
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}
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