void VTTRegion::displayLastVTTCueBox()
{
WTF_LOG(Media, "VTTRegion::displayLastVTTCueBox");
ASSERT(m_cueContainer);
// FIXME: This should not be causing recalc styles in a loop to set the "top" css
// property to move elements. We should just scroll the text track cues on the
// compositor with an animation.
if (m_scrollTimer.isActive())
return;
// If it's a scrolling region, add the scrolling class.
if (isScrollingRegion())
m_cueContainer->classList()->add(textTrackCueContainerScrollingClass(), ASSERT_NO_EXCEPTION);
float regionBottom = m_regionDisplayTree->getBoundingClientRect()->bottom();
// Find first cue that is not entirely displayed and scroll it upwards.
for (size_t i = 0; i < m_cueContainer->childNodeCount() && !m_scrollTimer.isActive(); ++i) {
float childTop = toHTMLDivElement(m_cueContainer->childNode(i))->getBoundingClientRect()->top();
float childBottom = toHTMLDivElement(m_cueContainer->childNode(i))->getBoundingClientRect()->bottom();
if (regionBottom >= childBottom)
continue;
float height = childBottom - childTop;
m_currentTop -= std::min(height, childBottom - regionBottom);
m_cueContainer->setInlineStyleProperty(CSSPropertyTop, m_currentTop, CSSPrimitiveValue::CSS_PX);
startTimer();
}
}
bool isPlainTextMarkup(Node* node) {
DCHECK(node);
if (!isHTMLDivElement(*node))
return false;
HTMLDivElement& element = toHTMLDivElement(*node);
if (!element.hasAttributes())
return false;
if (element.hasOneChild())
return element.firstChild()->isTextNode() ||
element.firstChild()->hasChildren();
return element.hasChildCount(2) &&
isTabHTMLSpanElementTextNode(element.firstChild()->firstChild()) &&
element.lastChild()->isTextNode();
}
