mirror of
https://invent.kde.org/graphics/okular
synced 2024-09-13 05:01:30 +00:00
138 lines
4.2 KiB
C++
138 lines
4.2 KiB
C++
/***************************************************************************
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* Copyright (C) 2004 by Albert Astals Cid <tsdgeos@terra.es> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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***************************************************************************/
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// qt/kde includes
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#include <qheader.h>
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#include <klocale.h>
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// local includes
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#include "toc.h"
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#include "core/document.h"
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#include "core/page.h"
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// uncomment following to enable a 2nd column showing the page referred
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// by each tree entry note: PDF uses often references to viewports and
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// they're slow when converted to page number. drop the 2nd column idea.
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//#define TOC_ENABLE_PAGE_COLUMN
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class TOCItem : public KListViewItem
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{
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public:
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TOCItem( KListView *parent, TOCItem *after, const QDomElement & e )
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: KListViewItem( parent, after, e.tagName() ), m_element( e )
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{
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#ifdef TOC_ENABLE_PAGE_COLUMN
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if ( e.hasAttribute( "Page" ) )
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setText( 1, e.attribute( "Page" ) );
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#endif
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}
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TOCItem( KListViewItem *parent, TOCItem *after, const QDomElement & e )
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: KListViewItem( parent, after, e.tagName() ), m_element( e )
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{
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#ifdef TOC_ENABLE_PAGE_COLUMN
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if ( e.hasAttribute( "Page" ) )
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setText( 1, e.attribute( "Page" ) );
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#endif
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}
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const QDomElement & element() const
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{
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return m_element;
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}
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private:
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QDomElement m_element;
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};
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TOC::TOC(QWidget *parent, KPDFDocument *document) : KListView(parent), m_document(document)
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{
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addColumn( i18n("Topic") );
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#ifdef TOC_ENABLE_PAGE_COLUMN
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addColumn( i18n("Page") );
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#else
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header() -> hide();
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#endif
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setSorting(-1);
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setRootIsDecorated(true);
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setResizeMode(AllColumns);
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connect(this, SIGNAL(executed(QListViewItem *)), this, SLOT(slotExecuted(QListViewItem *)));
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}
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uint TOC::observerId() const
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{
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return TOC_ID;
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}
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void TOC::notifySetup( const QValueVector< KPDFPage * > & pages, bool documentChanged )
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{
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if ( !documentChanged || pages.size() < 1 )
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return;
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// clear contents
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clear();
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// request synopsis description (is a dom tree)
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const DocumentSynopsis * syn = m_document->documentSynopsis();
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// if not present, disable the contents tab
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if ( !syn )
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{
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emit hasTOC( false );
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return;
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}
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// else populate the listview and enable the tab
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addChildren( *syn );
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emit hasTOC( true );
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}
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void TOC::addChildren( const QDomNode & parentNode, KListViewItem * parentItem )
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{
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// keep track of the current listViewItem
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TOCItem * currentItem = 0;
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QDomNode n = parentNode.firstChild();
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while( !n.isNull() )
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{
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// convert the node to an element (sure it is)
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QDomElement e = n.toElement();
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// insert the entry as top level (listview parented) or 2nd+ level
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if ( !parentItem )
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currentItem = new TOCItem( this, currentItem, e );
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else
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currentItem = new TOCItem( parentItem, currentItem, e );
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// descend recursively and advance to the next node
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if ( e.hasChildNodes() )
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addChildren( n, currentItem );
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n = n.nextSibling();
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}
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}
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void TOC::slotExecuted( QListViewItem *i )
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{
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const QDomElement & e = static_cast< TOCItem* >( i )->element();
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if ( e.hasAttribute( "Viewport" ) )
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{
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// if the node has a viewport, set it
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m_document->setViewport( DocumentViewport( e.attribute( "Viewport" ) ), TOC_ID );
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}
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else if ( e.hasAttribute( "ViewportName" ) )
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{
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// if the node references a viewport, get the reference and set it
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const QString & page = e.attribute( "ViewportName" );
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const QString & viewport = m_document->getMetaData( "NamedViewport", page );
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if ( !viewport.isNull() )
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m_document->setViewport( DocumentViewport( viewport ), TOC_ID );
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}
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}
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#include "toc.moc"
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