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#include "dbounceanimation.h" |
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// SPDX-FileCopyrightText: 2024 UnionTech Software Technology Co., Ltd. | ||
// | ||
// SPDX-License-Identifier: LGPL-3.0-or-later | ||
#ifndef DBOUNCEANIMATION_H | ||
#define DBOUNCEANIMATION_H | ||
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#include <DObject> | ||
#include <QObject> | ||
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class QPropertyAnimation; | ||
class QAbstractScrollArea; | ||
class DBounceAnimationPrivate; | ||
class DBounceAnimation : public QObject, public DTK_CORE_NAMESPACE::DObject | ||
{ | ||
Q_OBJECT | ||
public: | ||
explicit DBounceAnimation(QObject *parent = nullptr); | ||
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void setAnimationTarget(QAbstractScrollArea *w); | ||
void setAniMationEnable(bool enable); | ||
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protected: | ||
bool eventFilter(QObject *o, QEvent *e) override; | ||
void bounceBack(Qt::Orientation orientation); | ||
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private: | ||
D_DECLARE_PRIVATE(DBounceAnimation) | ||
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}; | ||
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#endif // DBOUNCEANIMATION_H |
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// SPDX-FileCopyrightText: 2024 UnionTech Software Technology Co., Ltd. | ||
// | ||
// SPDX-License-Identifier: LGPL-3.0-or-later | ||
#include "private/dbounceanimation_p.h" | ||
#include <QPropertyAnimation> | ||
#include <QEvent> | ||
#include <QDebug> | ||
#include <QAbstractScrollArea> | ||
#include <QScrollBar> | ||
#include <QWheelEvent> | ||
#include <QTimer> | ||
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DBounceAnimationPrivate::DBounceAnimationPrivate(DBounceAnimation *qq) | ||
: DObjectPrivate (qq) | ||
, m_animation(nullptr) | ||
, m_animationTarget(nullptr) | ||
, m_deltaSum(0) | ||
{ | ||
} | ||
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DBounceAnimation::DBounceAnimation(QObject *parent) | ||
: QObject(parent) | ||
, DObject(*new DBounceAnimationPrivate(this)) | ||
{ | ||
} | ||
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void DBounceAnimation::setAnimationTarget(QAbstractScrollArea *w) | ||
{ | ||
D_D(DBounceAnimation); | ||
if (!w) | ||
return; | ||
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if (d->m_animationTarget == w) | ||
return; | ||
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d->m_animationTarget = w; | ||
} | ||
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void DBounceAnimation::setAniMationEnable(bool enable) | ||
{ | ||
D_D(DBounceAnimation); | ||
enable ? d->m_animationTarget->installEventFilter(this) | ||
: d->m_animationTarget->removeEventFilter(this); | ||
} | ||
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bool DBounceAnimation::eventFilter(QObject *o, QEvent *e) | ||
{ | ||
D_D(DBounceAnimation); | ||
if (e->type() == QEvent::Wheel) { | ||
if (auto absscroll = dynamic_cast<QAbstractScrollArea *>(o)) { | ||
if (auto wheelEvent = dynamic_cast<QWheelEvent *>(e)) { | ||
if (absscroll->verticalScrollBar()->value() <= 0 || absscroll->verticalScrollBar()->value() >= absscroll->verticalScrollBar()->maximum()) { | ||
d->m_deltaSum += wheelEvent->delta(); | ||
bounceBack(wheelEvent->angleDelta().x() == 0 ? Qt::Vertical : Qt::Horizontal); | ||
} | ||
} | ||
} | ||
} | ||
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return false; | ||
} | ||
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void DBounceAnimation::bounceBack(Qt::Orientation orientation) | ||
{ | ||
D_D(DBounceAnimation); | ||
if (d->m_animation) | ||
return; | ||
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if (orientation & Qt::Vertical && d->m_animationTarget->verticalScrollBar()->maximum() == d->m_animationTarget->verticalScrollBar()->minimum()) | ||
return; | ||
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if (orientation & Qt::Horizontal && d->m_animationTarget->horizontalScrollBar()->maximum() == d->m_animationTarget->horizontalScrollBar()->minimum()) | ||
return; | ||
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d->m_animation = new QPropertyAnimation(this); | ||
d->m_animation->setTargetObject(d->m_animationTarget->viewport()); | ||
d->m_animation->setPropertyName("pos"); | ||
d->m_animation->setDuration(100); | ||
d->m_animation->setEasingCurve(QEasingCurve::InQuart); | ||
d->m_animation->setStartValue(QPoint(d->m_animationTarget->viewport()->x(), d->m_animationTarget->viewport()->y())); | ||
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QTimer::singleShot(100, this, [this, d, orientation]() { | ||
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if (orientation & Qt::Vertical) { | ||
d->m_animation->setEndValue( | ||
QPoint(d->m_animationTarget->viewport()->x(), d->m_animationTarget->viewport()->y() + d->m_deltaSum / 16)); | ||
} else { | ||
d->m_animation->setEndValue( | ||
QPoint(d->m_animationTarget->viewport()->x() + d->m_deltaSum / 16, d->m_animationTarget->viewport()->y())); | ||
} | ||
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d->m_animation->start(); | ||
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connect(d->m_animation, &QPropertyAnimation::finished, this, [d]() { | ||
if (d->m_animation->direction() == QPropertyAnimation::Backward) { | ||
delete d->m_animation; | ||
d->m_animation = nullptr; | ||
return; | ||
} | ||
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d->m_animation->setDirection(QPropertyAnimation::Direction::Backward); | ||
d->m_animation->setDuration(1000); | ||
d->m_animation->start(QPropertyAnimation::DeleteWhenStopped); | ||
d->m_deltaSum = 0; | ||
}); | ||
}); | ||
} |
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