void xbnode::appendText( std::string text )
{
if( hasChildNodes() )
{
// !TEXT einfuegen
sptr<xbnode> neu_text = new xbnode();
neu_text->m_Type = xbnode::xbn_text;
neu_text->setText( text );
neu_text->m_ptrParent = this;
this->m_Nodes.push_back( neu_text );
}
else
{
setText( getText() + text );
}
}
void MediaControlTextTrackContainerElement::updateDisplay()
{
if (!mediaController()->closedCaptionsVisible()) {
m_cueContainer->removeChildren();
return;
}
HTMLMediaElement* mediaElement = toParentMediaElement(this);
// 1. If the media element is an audio element, or is another playback
// mechanism with no rendering area, abort these steps. There is nothing to
// render.
if (!mediaElement || !mediaElement->isVideo())
return;
// 2. Let video be the media element or other playback mechanism.
HTMLVideoElement* video = static_cast<HTMLVideoElement*>(mediaElement);
// 3. Let output be an empty list of absolutely positioned CSS block boxes.
Vector<RefPtr<HTMLDivElement> > output;
// 4. If the user agent is exposing a user interface for video, add to
// output one or more completely transparent positioned CSS block boxes that
// cover the same region as the user interface.
// 5. If the last time these rules were run, the user agent was not exposing
// a user interface for video, but now it is, let reset be true. Otherwise,
// let reset be false.
// There is nothing to be done explicitly for 4th and 5th steps, as
// everything is handled through CSS. The caption box is on top of the
// controls box, in a container set with the -webkit-box display property.
// 6. Let tracks be the subset of video's list of text tracks that have as
// their rules for updating the text track rendering these rules for
// updating the display of WebVTT text tracks, and whose text track mode is
// showing or showing by default.
// 7. Let cues be an empty list of text track cues.
// 8. For each track track in tracks, append to cues all the cues from
// track's list of cues that have their text track cue active flag set.
CueList activeCues = video->currentlyActiveCues();
// 9. If reset is false, then, for each text track cue cue in cues: if cue's
// text track cue display state has a set of CSS boxes, then add those boxes
// to output, and remove cue from cues.
// There is nothing explicitly to be done here, as all the caching occurs
// within the TextTrackCue instance itself. If parameters of the cue change,
// the display tree is cleared.
// 10. For each text track cue cue in cues that has not yet had
// corresponding CSS boxes added to output, in text track cue order, run the
// following substeps:
for (size_t i = 0; i < activeCues.size(); ++i) {
TextTrackCue* cue = activeCues[i].data();
ASSERT(cue->isActive());
if (!cue->track() || !cue->track()->isRendered())
continue;
RefPtr<TextTrackCueBox> displayBox = cue->getDisplayTree();
if (displayBox->hasChildNodes() && !contains(static_cast<Node*>(displayBox.get())))
// Note: the display tree of a cue is removed when the active flag of the cue is unset.
m_cueContainer->appendChild(displayBox, ASSERT_NO_EXCEPTION, false);
}
// 11. Return output.
if (hasChildNodes()) {
show();
if (mediaElement->requiresTextTrackRepresentation()) {
if (!m_textTrackRepresentation)
m_textTrackRepresentation = TextTrackRepresentation::create(this);
mediaElement->setTextTrackRepresentation(m_textTrackRepresentation.get());
if (Page* page = document()->page())
m_textTrackRepresentation->setContentScale(page->deviceScaleFactor());
m_textTrackRepresentation->update();
setInlineStyleProperty(CSSPropertyWidth, String::number(m_videoDisplaySize.size().width()) + "px");
setInlineStyleProperty(CSSPropertyHeight, String::number(m_videoDisplaySize.size().height()) + "px");
}
} else {
hide();
m_textTrackRepresentation = nullptr;
mediaElement->setTextTrackRepresentation(0);
removeInlineStyleProperty(CSSPropertyWidth);
removeInlineStyleProperty(CSSPropertyHeight);
}
}
