| /**************************************************************************** |
| ** |
| ** Copyright (C) 2019 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of Qt Quick Designer Components. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
| ** Commercial License Usage |
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| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 or (at your option) any later version |
| ** approved by the KDE Free Qt Foundation. The licenses are as published by |
| ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
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| ** |
| ****************************************************************************/ |
| |
| #include "qquicktimelineanimation_p.h" |
| |
| #include "qquicktimeline_p.h" |
| |
| #include <private/qobject_p.h> |
| #include <private/qquickanimation_p_p.h> |
| |
| #include <QTimer> |
| |
| QT_BEGIN_NAMESPACE |
| |
| /*! |
| \qmltype TimelineAnimation |
| \inherits QQuickNumberAnimation |
| \instantiates QQuickTimelineAnimation |
| \inqmlmodule QtQuick.Timeline |
| \ingroup qtqmltypes |
| |
| \brief A number animation attached to a timeline. |
| |
| Specifies how the current frame property of a timeline is animated. This |
| animates the properties of the objects targeted by the timeline. |
| */ |
| |
| /*! |
| \qmlproperty bool TimelineAnimation::pingPong |
| |
| Whether the animation is played backwards after it finishes. This is an easy |
| way to create circular animations. |
| */ |
| |
| /*! |
| \qmlsignal TimelineAnimation::finished |
| |
| This signal is emitted when the timeline animation finishes. |
| */ |
| |
| QQuickTimelineAnimation::QQuickTimelineAnimation(QObject *parent) : QQuickNumberAnimation(parent) |
| { |
| setProperty(QLatin1String("currentFrame")); |
| connect(this, &QQuickAbstractAnimation::started, this, &QQuickTimelineAnimation::handleStarted); |
| connect(this, &QQuickAbstractAnimation::stopped, this, &QQuickTimelineAnimation::handleStopped); |
| } |
| |
| void QQuickTimelineAnimation::setPingPong(bool b) |
| { |
| if (b == m_pinpong) |
| return; |
| |
| m_pinpong = b; |
| emit pingPongChanged(); |
| } |
| |
| bool QQuickTimelineAnimation::pingPong() const |
| { |
| return m_pinpong; |
| } |
| |
| void QQuickTimelineAnimation::handleStarted() |
| { |
| auto timeline = qobject_cast<QQuickTimeline*>(parent()); |
| |
| if (!timeline) |
| return; |
| |
| for (QQuickTimelineAnimation *other : timeline->getAnimations()) { |
| if (other != this) |
| other->stop(); |
| } |
| |
| auto *privateObject = static_cast<QQuickPropertyAnimationPrivate*>(QObjectPrivate::get(this)); |
| |
| if (m_pinpong && m_originalStart) { |
| m_originalLoop = privateObject->loopCount; |
| m_currentLoop = 0; |
| privateObject->loopCount = 1; |
| privateObject->animationInstance->setLoopCount(1); |
| m_originalStart = false; |
| m_reversed = false; |
| } |
| } |
| |
| static void swapStartEnd(QQuickPropertyAnimationPrivate *privateObject) |
| { |
| std::swap(privateObject->to, privateObject->from); |
| } |
| |
| void QQuickTimelineAnimation::handleStopped() |
| { |
| if (!m_pinpong) { |
| emit finished(); |
| return; |
| } |
| |
| auto *privateObject = static_cast<QQuickPropertyAnimationPrivate*>(QObjectPrivate::get(this)); |
| |
| if (m_reversed) |
| m_currentLoop++; |
| |
| if (!(privateObject->animationInstance->currentTime() < privateObject->duration) |
| && (m_currentLoop < m_originalLoop |
| || m_originalLoop == -1)) { |
| swapStartEnd(privateObject); |
| |
| m_reversed = !m_reversed; |
| QQuickTimelineAnimation::start(); |
| |
| } else { |
| if (m_reversed) |
| swapStartEnd(privateObject); |
| |
| m_originalStart = true; |
| m_reversed = false; |
| privateObject->loopCount = m_originalLoop; |
| emit finished(); |
| } |
| } |
| |
| QT_END_NAMESPACE |