QtViewportHandler::QtViewportHandler(WebKit::WebPageProxy* proxy, QQuickWebView* viewportItem, QQuickWebPage* pageItem)
: m_webPageProxy(proxy)
, m_viewportItem(viewportItem)
, m_pageItem(pageItem)
, m_allowsUserScaling(false)
, m_minimumScale(1)
, m_maximumScale(1)
, m_devicePixelRatio(1)
, m_suspendCount(0)
, m_hasSuspendedContent(false)
, m_hadUserInteraction(false)
, m_scaleAnimation(new ScaleAnimation(this))
, m_pinchStartScale(-1)
, m_lastCommittedScale(-1)
, m_zoomOutScale(0.0)
{
m_scaleAnimation->setDuration(kScaleAnimationDurationMillis);
m_scaleAnimation->setEasingCurve(QEasingCurve::OutCubic);
connect(m_viewportItem, SIGNAL(movementStarted()), SLOT(flickMoveStarted()), Qt::DirectConnection);
connect(m_viewportItem, SIGNAL(movementEnded()), SLOT(flickMoveEnded()), Qt::DirectConnection);
connect(m_scaleAnimation, SIGNAL(valueChanged(QVariant)),
SLOT(scaleAnimationValueChanged(QVariant)), Qt::DirectConnection);
connect(m_scaleAnimation, SIGNAL(stateChanged(QAbstractAnimation::State, QAbstractAnimation::State)),
SLOT(scaleAnimationStateChanged(QAbstractAnimation::State, QAbstractAnimation::State)), Qt::DirectConnection);
}
QtViewportInteractionEngine::QtViewportInteractionEngine(QQuickWebView* viewport, QQuickWebPage* content)
: m_viewport(viewport)
, m_content(content)
, m_suspendCount(0)
, m_hasSuspendedContent(false)
, m_hadUserInteraction(false)
, m_scaleAnimation(new ScaleAnimation(this))
, m_pinchStartScale(-1)
{
reset();
connect(m_content, SIGNAL(widthChanged()), SLOT(itemSizeChanged()), Qt::DirectConnection);
connect(m_content, SIGNAL(heightChanged()), SLOT(itemSizeChanged()), Qt::DirectConnection);
connect(m_viewport, SIGNAL(movementStarted()), SLOT(flickableMoveStarted()), Qt::DirectConnection);
connect(m_viewport, SIGNAL(movementEnded()), SLOT(flickableMoveEnded()), Qt::DirectConnection);
connect(m_scaleAnimation, SIGNAL(valueChanged(QVariant)),
SLOT(scaleAnimationValueChanged(QVariant)), Qt::DirectConnection);
connect(m_scaleAnimation, SIGNAL(stateChanged(QAbstractAnimation::State, QAbstractAnimation::State)),
SLOT(scaleAnimationStateChanged(QAbstractAnimation::State, QAbstractAnimation::State)), Qt::DirectConnection);
}
QtViewportInteractionEngine::QtViewportInteractionEngine(const QQuickWebView* viewport, QQuickWebPage* content)
: m_viewport(viewport)
, m_content(content)
, m_suspendCount(0)
, m_scaleAnimation(new ScaleAnimation(this))
, m_pinchStartScale(-1)
{
reset();
QScrollerProperties properties = scroller()->scrollerProperties();
// The QtPanGestureRecognizer is responsible for recognizing the gesture
// thus we need to disable the drag start distance.
properties.setScrollMetric(QScrollerProperties::DragStartDistance, 0.0);
// Set some default QScroller constrains to mimic the physics engine of the N9 browser.
properties.setScrollMetric(QScrollerProperties::AxisLockThreshold, 0.66);
properties.setScrollMetric(QScrollerProperties::ScrollingCurve, QEasingCurve(QEasingCurve::OutExpo));
properties.setScrollMetric(QScrollerProperties::DecelerationFactor, 0.05);
properties.setScrollMetric(QScrollerProperties::MaximumVelocity, 0.635);
properties.setScrollMetric(QScrollerProperties::OvershootDragResistanceFactor, 0.33);
properties.setScrollMetric(QScrollerProperties::OvershootScrollDistanceFactor, 0.33);
scroller()->setScrollerProperties(properties);
connect(m_content, SIGNAL(widthChanged()), this, SLOT(itemSizeChanged()), Qt::DirectConnection);
connect(m_content, SIGNAL(heightChanged()), this, SLOT(itemSizeChanged()), Qt::DirectConnection);
connect(m_scaleAnimation, SIGNAL(valueChanged(QVariant)),
SLOT(scaleAnimationValueChanged(QVariant)), Qt::DirectConnection);
connect(m_scaleAnimation, SIGNAL(stateChanged(QAbstractAnimation::State, QAbstractAnimation::State)),
SLOT(scaleAnimationStateChanged(QAbstractAnimation::State, QAbstractAnimation::State)), Qt::DirectConnection);
connect(scroller(), SIGNAL(stateChanged(QScroller::State)),
SLOT(scrollStateChanged(QScroller::State)), Qt::DirectConnection);
}
