static void fillToc(Poppler::Document *doc, const QDomNode &parent, QTreeWidget *tree, QTreeWidgetItem *parentItem)
{
QTreeWidgetItem *newitem = 0;
for (QDomNode node = parent.firstChild(); !node.isNull(); node = node.nextSibling()) {
QDomElement e = node.toElement();
// for some unknown reason e.attribute("Destination") does not exist while Okular successfully uses it; so we cannot use Poppler::LinkDestination(e.attribute(QString::fromLatin1("Destination"))).pageNumber() and must use the following
// const int pageNumber = doc->linkDestination(e.attribute(QString::fromLatin1("DestinationName")))->pageNumber();
Poppler::LinkDestination *dest = doc->linkDestination(e.attribute(QString::fromLatin1("DestinationName")));
const double pageNumber = dest->pageNumber() + dest->top();
delete dest;
if (!parentItem) {
newitem = new QTreeWidgetItem(tree, newitem);
} else {
newitem = new QTreeWidgetItem(parentItem, newitem);
}
newitem->setText(0, e.tagName());
newitem->setData(0, Qt::UserRole, pageNumber);
bool isOpen = false;
if (e.hasAttribute(QString::fromLatin1("Open"))) {
isOpen = QVariant(e.attribute(QString::fromLatin1("Open"))).toBool();
}
if (isOpen) {
tree->expandItem(newitem);
}
if (e.hasChildNodes()) {
fillToc(doc, node, tree, newitem);
}
}
}
static QList<Link> getLinks(Poppler::Page* popplerPage, const QStringList &popplerPageLabels)
{
QList<Link> links;
//QTime t = QTime::currentTime();
QList<Poppler::Link*> popplerLinks = popplerPage->links(); // this is slow
//qCritical() << t.msecsTo(QTime::currentTime());
links.reserve(popplerLinks.size());
while (!popplerLinks.isEmpty())
{
Poppler::Link *popplerLink = popplerLinks.takeFirst();
Link link;
// link.linkArea = popplerLink->linkArea();
const QRectF linkArea = popplerLink->linkArea();
link.linkArea = QRectF(linkArea.left(), qMin(linkArea.top(), linkArea.bottom()), qAbs(linkArea.right() - linkArea.left()), qAbs(linkArea.bottom() - linkArea.top())); // poppler switches top and bottom of this box :(
switch (popplerLink->linkType())
{
case Poppler::Link::Goto:
{
const Poppler::LinkGoto *popplerLinkGoto = static_cast<const Poppler::LinkGoto*>(popplerLink);
const Poppler::LinkDestination popplerDest = popplerLinkGoto->destination();
link.pageNumber = popplerDest.pageNumber() - 1 + popplerDest.top();
link.pageLabel = popplerPageLabels.at(int(link.pageNumber));
}
break;
case Poppler::Link::Browse:
{
const Poppler::LinkBrowse *popplerLinkBrowse = static_cast<const Poppler::LinkBrowse*>(popplerLink);
link.url = popplerLinkBrowse->url();
}
break;
case Poppler::Link::Action:
{
const Poppler::LinkAction *popplerLinkAction = static_cast<const Poppler::LinkAction*>(popplerLink);
link.pageNumber = -1; // since Poppler::LinkAction::ActionType doesn't specify a "None" value, we use pageNumber to distinguish this type of action, we do not check whether popplerLinkAction->actionType() is > 0 because it is not documented that all valid action types have a value > 0
link.actionType = popplerLinkAction->actionType();
}
break;
case Poppler::Link::Execute: // TODO
case Poppler::Link::Sound: // TODO
case Poppler::Link::Movie: // not implemented in poppler 0.16
case Poppler::Link::JavaScript: // TODO
default: // do nothing
break;
}
links << link;
delete popplerLink;
}
return links;
}
void GridLayout::goto_link_destination(const Poppler::LinkDestination &link) {
int link_page = link.pageNumber() - 1;
float w = res->get_page_width(link_page, false);
float h = res->get_page_height(link_page, false);
const QPointF link_point = rotate_point(QPointF(link.left() * w, link.top() * h), w, h, res->get_rotation());
QPoint p = get_target_page_distance(link_page);
if (link.isChangeLeft()) {
p.rx() += link_point.x() * size - width * jump_padding;
}
if (link.isChangeTop()) {
p.ry() += link_point.y() * size - height * jump_padding;
}
view_point(p);
}
void addSynopsisChildren(QDomNode *parent, int level)
{
if (!parent || parent->isNull())
return;
// keep track of the current listViewItem
QDomNode n = parent->firstChild();
while (!n.isNull()) {
PDFTocEntry *tocEntry = new PDFTocEntry;
tocEntry->level = level;
// convert the node to an element (sure it is)
QDomElement e = n.toElement();
tocEntry->title = e.tagName();
// Apparently we can have external links in the ToC.
// Not doing this for now, but leave it in here as a note to self
// if (!e.attribute("ExternalFileName").isNull()) item.setAttribute("ExternalFileName", e.attribute("ExternalFileName"));
if (!e.attribute("DestinationName").isNull()) {
Poppler::LinkDestination *dest = document->linkDestination(e.attribute("DestinationName"));
if (dest) {
tocEntry->pageNumber = dest->pageNumber();
delete dest;
}
//item.setAttribute("ViewportName", e.attribute("DestinationName"));
}
if (!e.attribute("Destination").isNull()) {
//fillViewportFromLinkDestination( vp, Poppler::LinkDestination(e.attribute("Destination")) );
//item.setAttribute( "Viewport", vp.toString() );
Poppler::LinkDestination dest(e.attribute("Destination"));
tocEntry->pageNumber = dest.pageNumber();
}
// if (!e.attribute("Open").isNull()) item.setAttribute("Open", e.attribute("Open"));
// if (!e.attribute("DestinationURI").isNull()) item.setAttribute("URL", e.attribute("DestinationURI"));
// Add the entry to the list of ToC entries
entries.append(tocEntry);
// descend recursively and advance to the next node
++level;
if (e.hasChildNodes())
addSynopsisChildren(&n, level);
--level;
n = n.nextSibling();
}
}
static void copyToc(const QUrl &docUrl, Poppler::Document *doc, QDomNode node,
QList<Choice> &choices, int indent) {
while (!node.isNull()) {
if (node.isElement()) {
QDomElement el = node.toElement();
QString destName = el.attribute("DestinationName", QString());
if (!destName.isNull()) {
Poppler::LinkDestination *dest = doc->linkDestination(destName);
QUrl refUrl(docUrl);
refUrl.setFragment("page:" + QString::number(dest->pageNumber() - 1));
delete dest;
QString displayName(QString(indent * 2, ' ') + el.nodeName());
choices << Choice(displayName, refUrl.toString());
}
}
if (node.hasChildNodes()) {
copyToc(docUrl, doc, node.firstChild(), choices, indent + 1);
}
node = node.nextSibling();
}
}