From 25a414904a78a0d564f4e4e3afa4c0eb96cb999c Mon Sep 17 00:00:00 2001
From: Pino Toscano <pino@kde.org>
Date: Sun, 30 Nov 2008 18:14:30 +0000
Subject: [PATCH] djvu toc: - add mapping for page id/name/title -> page -
 properly get the destination for "named" destinations in toc items this way
 we should recognize all the types of destinations in a djvu toc

svn path=/trunk/KDE/kdegraphics/okular/; revision=890963
---
 generators/djvu/generator_djvu.cpp | 12 +++++++---
 generators/djvu/kdjvu.cpp          | 36 ++++++++++++++++++++++++++++++
 generators/djvu/kdjvu.h            |  5 +++++
 3 files changed, 50 insertions(+), 3 deletions(-)

diff --git a/generators/djvu/generator_djvu.cpp b/generators/djvu/generator_djvu.cpp
index 095808fcd..15daa89f1 100644
--- a/generators/djvu/generator_djvu.cpp
+++ b/generators/djvu/generator_djvu.cpp
@@ -30,7 +30,7 @@
 #include <klocale.h>
 #include <ktemporaryfile.h>
 
-static void recurseCreateTOC( QDomDocument &maindoc, const QDomNode &parent, QDomNode &parentDestination )
+static void recurseCreateTOC( QDomDocument &maindoc, const QDomNode &parent, QDomNode &parentDestination, KDjVu *djvu )
 {
     QDomNode n = parent.firstChild();
     while( !n.isNull() )
@@ -47,6 +47,12 @@ static void recurseCreateTOC( QDomDocument &maindoc, const QDomNode &parent, QDo
             vp.pageNumber = dest.toInt() - 1;
             newel.setAttribute( "Viewport", vp.toString() );
         }
+        else if ( !( dest = el.attribute( "PageName" ) ).isEmpty() )
+        {
+            Okular::DocumentViewport vp;
+            vp.pageNumber = djvu->pageNumber( dest );
+            newel.setAttribute( "Viewport", vp.toString() );
+        }
         else if ( !( dest = el.attribute( "URL" ) ).isEmpty() )
         {
             newel.setAttribute( "URL", dest );
@@ -54,7 +60,7 @@ static void recurseCreateTOC( QDomDocument &maindoc, const QDomNode &parent, QDo
 
         if ( el.hasChildNodes() )
         {
-            recurseCreateTOC( maindoc, n, newel );
+            recurseCreateTOC( maindoc, n, newel, djvu );
         }
         n = n.nextSibling();
     }
@@ -182,7 +188,7 @@ const Okular::DocumentSynopsis * DjVuGenerator::generateDocumentSynopsis()
     if ( doc )
     {
         m_docSyn = new Okular::DocumentSynopsis();
-        recurseCreateTOC( *m_docSyn, *doc, *m_docSyn );
+        recurseCreateTOC( *m_docSyn, *doc, *m_docSyn, m_djvu );
     }
     locker.unlock();
 
diff --git a/generators/djvu/kdjvu.cpp b/generators/djvu/kdjvu.cpp
index 8f2614ebd..db8d82b95 100644
--- a/generators/djvu/kdjvu.cpp
+++ b/generators/djvu/kdjvu.cpp
@@ -443,6 +443,8 @@ class KDjVu::Private
 
         void readMetaData( int page );
 
+        int pageWithName( const QString & name );
+
         ddjvu_context_t *m_djvu_cxt;
         ddjvu_document_t *m_djvu_document;
         ddjvu_format_t *m_format;
@@ -455,6 +457,8 @@ class KDjVu::Private
         QHash<QString, QVariant> m_metaData;
         QDomDocument * m_docBookmarks;
 
+        QHash<QString, int> m_pageNamesCache;
+
         bool m_cacheEnabled;
 
         static unsigned int s_formatmask[4];
@@ -596,6 +600,23 @@ void KDjVu::Private::readMetaData( int page )
     }
 }
 
+int KDjVu::Private::pageWithName( const QString & name )
+{
+    const QByteArray utfName = name.toUtf8();
+    const int fileNum = ddjvu_document_get_filenum( m_djvu_document );
+    ddjvu_fileinfo_t info;
+    for ( int i = 0; i < fileNum; ++i )
+    {
+        if ( DDJVU_JOB_OK != ddjvu_document_get_fileinfo( m_djvu_document, i, &info ) )
+            continue;
+        if ( info.type != 'P' )
+            continue;
+        if ( ( utfName == info.id ) || ( utfName == info.name ) || ( utfName == info.title ) )
+            return info.pageno;
+    }
+    return -1;
+}
+
 
 KDjVu::KDjVu() : d( new Private )
 {
@@ -719,6 +740,8 @@ void KDjVu::closeFile()
     d->mImgCache.clear();
     // clearing the old metadata
     d->m_metaData.clear();
+    // cleaing the page names mapping
+    d->m_pageNamesCache.clear();
     // releasing the old document
     if ( d->m_djvu_document )
         ddjvu_document_release( d->m_djvu_document );
@@ -1102,3 +1125,16 @@ bool KDjVu::isCacheEnabled() const
 {
     return d->m_cacheEnabled;
 }
+
+int KDjVu::pageNumber( const QString & name ) const
+{
+    if ( !d->m_djvu_document )
+        return -1;
+
+    QHash< QString, int >::iterator it = d->m_pageNamesCache.find( name );
+    if ( it == d->m_pageNamesCache.end() )
+    {
+        it = d->m_pageNamesCache.insert( name, d->pageWithName( name ) );
+    }
+    return it.value();
+}
diff --git a/generators/djvu/kdjvu.h b/generators/djvu/kdjvu.h
index c40eed6b9..ad584faa1 100644
--- a/generators/djvu/kdjvu.h
+++ b/generators/djvu/kdjvu.h
@@ -284,6 +284,11 @@ class KDjVu
          */
         bool isCacheEnabled() const;
 
+        /**
+         * Return the page number of the page whose title is \p name.
+         */
+        int pageNumber( const QString & name ) const;
+
     private:
         class Private;
         Private * const d;