office/okular
office/okular
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Markdown: Support internal links

Browse source 
When processing the <a> elements, store in two maps those that contain
an href="#Something" and those with name="Something" then once we've
processed them all, go over the first map trying to find itself in the
second

BUGS: 421163
This commit is contained in:
Albert Astals Cid 2020-05-13 00:18:14 +02:00
parent 5e1f2c9a47
commit b1c02b7e79
2 changed files with 36 additions and 12 deletions
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43
generators/markdown/converter.cpp
View file

@ -67,7 +67,21 @@ QTextDocument* Converter::convert( const QString &fileName )
m_fileDir = QDir( fileName.left( fileName.lastIndexOf( '/' ) ) );
QTextDocument *doc = convertOpenFile();
extractLinks( doc->rootFrame() );
QHash<QString, QTextFragment> internalLinks;
QHash<QString, QTextBlock> documentAnchors;
extractLinks( doc->rootFrame(), internalLinks, documentAnchors );
for (auto linkIt = internalLinks.constBegin(); linkIt != internalLinks.constEnd(); ++linkIt) {
auto anchorIt = documentAnchors.constFind(linkIt.key());
if (anchorIt != documentAnchors.constEnd()) {
const Okular::DocumentViewport viewport = calculateViewport(doc, anchorIt.value());
Okular::GotoAction *action = new Okular::GotoAction(QString(), viewport);
emit addAction(action, linkIt.value().position(), linkIt.value().position()+linkIt.value().length());
} else {
qDebug() << "Could not find destination for" << linkIt.key();
}
}
return doc;
}
@ -82,7 +96,7 @@ QTextDocument *Converter::convertOpenFile()
MMIOT *markdownHandle = mkd_in( m_markdownFile, 0 );
int flags = MKD_FENCEDCODE | MKD_GITHUBTAGS | MKD_AUTOLINK;
int flags = MKD_FENCEDCODE | MKD_GITHUBTAGS | MKD_AUTOLINK | MKD_TOC | MKD_IDANCHOR;
if (!MarkdownGenerator::isFancyPantsEnabled())
flags |= MKD_NOPANTS;
if ( !mkd_compile( markdownHandle, flags ) ) {
@ -99,7 +113,7 @@ QTextDocument *Converter::convertOpenFile()
textDocument->setPageSize( QSizeF( 980, 1307 ) );
textDocument->setHtml( html );
textDocument->setDefaultFont( generator()->generalSettings()->font() );
mkd_cleanup( markdownHandle );
QTextFrameFormat frameFormat;
@ -113,30 +127,39 @@ QTextDocument *Converter::convertOpenFile()
return textDocument;
}
void Converter::extractLinks(QTextFrame * parent)
void Converter::extractLinks(QTextFrame * parent, QHash<QString, QTextFragment> &internalLinks, QHash<QString, QTextBlock> &documentAnchors)
{
for ( QTextFrame::iterator it = parent->begin(); !it.atEnd(); ++it ) {
QTextFrame *textFrame = it.currentFrame();
const QTextBlock textBlock = it.currentBlock();
if ( textFrame ) {
extractLinks(textFrame);
extractLinks(textFrame, internalLinks, documentAnchors);
} else if ( textBlock.isValid() ) {
extractLinks(textBlock);
extractLinks(textBlock, internalLinks, documentAnchors);
}
}
}
void Converter::extractLinks(const QTextBlock & parent)
void Converter::extractLinks(const QTextBlock & parent, QHash<QString, QTextFragment> &internalLinks, QHash<QString, QTextBlock> &documentAnchors)
{
for ( QTextBlock::iterator it = parent.begin(); !it.atEnd(); ++it ) {
const QTextFragment textFragment = it.fragment();
if ( textFragment.isValid() ) {
const QTextCharFormat textCharFormat = textFragment.charFormat();
if ( textCharFormat.isAnchor() ) {
Okular::BrowseAction *action = new Okular::BrowseAction( QUrl( textCharFormat.anchorHref() ) );
emit addAction( action, textFragment.position(), textFragment.position()+textFragment.length() );
const QString href = textCharFormat.anchorHref();
if ( href.startsWith( '#' ) ) { // It's an internal link, store it and we'll resolve it at the end
internalLinks.insert(href.mid(1), textFragment);
} else {
Okular::BrowseAction *action = new Okular::BrowseAction( QUrl( textCharFormat.anchorHref() ) );
emit addAction( action, textFragment.position(), textFragment.position()+textFragment.length() );
}
const QStringList anchorNames = textCharFormat.anchorNames();
for (const QString &anchorName : anchorNames) {
documentAnchors.insert(anchorName, parent);
}
}
}
}

5
generators/markdown/converter.h
View file

@ -13,6 +13,7 @@
#include <core/textdocumentgenerator.h>
#include <QDir>
#include <QTextFragment>
class QTextBlock;
class QTextFrame;
@ -34,8 +35,8 @@ class Converter : public Okular::TextDocumentConverter
QTextDocument *convertOpenFile();
private:
void extractLinks(QTextFrame *parent);
void extractLinks(const QTextBlock& parent);
void extractLinks(QTextFrame *parent, QHash<QString, QTextFragment> &internalLinks, QHash<QString, QTextBlock> &documentAnchors);
void extractLinks(const QTextBlock& parent, QHash<QString, QTextFragment> &internalLinks, QHash<QString, QTextBlock> &documentAnchors);
void convertImages(QTextFrame *parent, const QDir &dir, QTextDocument *textDocument);
void convertImages(const QTextBlock& parent, const QDir &dir, QTextDocument *textDocument);