/*
* This is called for all changes of item scale, width or height.
* This is called when interacting, ie. during for instance pinch-zooming.
*
* FIXME: This is currently called twice if you concurrently change width and height.
*/
void QtViewportInteractionEngine::itemSizeChanged()
{
if (m_suspendCount)
return;
setItemRectVisible(nearestValidBounds());
}
void QtViewportHandler::pageContentsSizeChanged(const QSize& newSize, const QSize& viewportSize)
{
if (viewportSize.isEmpty())
return;
float minimumScale = WebCore::computeMinimumScaleFactorForContentContained(m_rawAttributes, viewportSize, newSize);
if (!qFuzzyCompare(minimumScale, m_rawAttributes.minimumScale)) {
m_minimumScale = minimumScale;
emit m_viewportItem->experimental()->test()->viewportChanged();
if (!m_hadUserInteraction && !m_hasSuspendedContent) {
// Emits contentsScaleChanged();
setCSSScale(minimumScale);
}
}
// Emit for testing purposes, so that it can be verified that
// we didn't do scale adjustment.
emit m_viewportItem->experimental()->test()->contentsScaleCommitted();
if (!m_hasSuspendedContent) {
ViewportUpdateDeferrer guard(this);
setPageItemRectVisible(nearestValidBounds());
}
}
void QtViewportHandler::pinchGestureEnded()
{
ASSERT(m_suspendCount);
if (!m_allowsUserScaling)
return;
m_pinchStartScale = -1;
animatePageItemRectVisible(nearestValidBounds());
m_scaleUpdateDeferrer.clear(); // Clear after starting potential animation, which takes over deferring.
}
void QtViewportInteractionEngine::cancelScrollAnimation()
{
if (!scrollAnimationActive())
return;
// If the pan gesture recognizer receives a touch begin event
// during an ongoing kinetic scroll animation of a previous
// pan gesture, the animation is stopped and the content is
// immediately positioned back to valid boundaries.
m_viewport->cancelFlick();
setItemRectVisible(nearestValidBounds());
}
