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Diffstat (limited to 'kpdf/ui/toc.cpp')
| -rw-r--r-- | kpdf/ui/toc.cpp | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/kpdf/ui/toc.cpp b/kpdf/ui/toc.cpp new file mode 100644 index 00000000..6db19933 --- /dev/null +++ b/kpdf/ui/toc.cpp @@ -0,0 +1,175 @@ +/*************************************************************************** + * Copyright (C) 2004-2006 by Albert Astals Cid <tsdgeos@terra.es> * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + ***************************************************************************/ + +// qt/kde includes +#include <qheader.h> +#include <qvariant.h> +#include <klocale.h> + +// local includes +#include "toc.h" +#include "core/link.h" +#include "core/page.h" + +// uncomment following to enable a 2nd column showing the page referred +// by each tree entry note: PDF uses often references to viewports and +// they're slow when converted to page number. drop the 2nd column idea. +//#define TOC_ENABLE_PAGE_COLUMN + +class TOCItem : public KListViewItem +{ + public: + TOCItem( KListView *parent, TOCItem *after, const QDomElement & e ) + : KListViewItem( parent, after, e.tagName() ), m_element( e ) + { +#ifdef TOC_ENABLE_PAGE_COLUMN + if ( e.hasAttribute( "Page" ) ) + setText( 1, e.attribute( "Page" ) ); +#endif + setMultiLinesEnabled(true); + } + + TOCItem( KListViewItem *parent, TOCItem *after, const QDomElement & e ) + : KListViewItem( parent, after, e.tagName() ), m_element( e ) + { +#ifdef TOC_ENABLE_PAGE_COLUMN + if ( e.hasAttribute( "Page" ) ) + setText( 1, e.attribute( "Page" ) ); +#endif + setMultiLinesEnabled(true); + } + + const QDomElement & element() const + { + return m_element; + } + + private: + QDomElement m_element; +}; + +TOC::TOC(QWidget *parent, KPDFDocument *document) : KListView(parent), m_document(document) +{ + addColumn( i18n("Topic") ); +#ifdef TOC_ENABLE_PAGE_COLUMN + addColumn( i18n("Page") ); +#else + header() -> hide(); +#endif + setSorting(-1); + setRootIsDecorated(true); + // the next line causes bug:147233 +// setResizeMode(AllColumns); + setAllColumnsShowFocus(true); + connect(this, SIGNAL(clicked(QListViewItem *)), this, SLOT(slotExecuted(QListViewItem *))); + connect(this, SIGNAL(returnPressed(QListViewItem *)), this, SLOT(slotExecuted(QListViewItem *))); +} + +TOC::~TOC() +{ + m_document->removeObserver( this ); +} + +uint TOC::observerId() const +{ + return TOC_ID; +} + +void TOC::notifySetup( const QValueVector< KPDFPage * > & /*pages*/, bool documentChanged ) +{ + if ( !documentChanged ) + return; + + // clear contents + clear(); + + // request synopsis description (is a dom tree) + const DocumentSynopsis * syn = m_document->documentSynopsis(); + + // if not present, disable the contents tab + if ( !syn ) + { + emit hasTOC( false ); + return; + } + + // else populate the listview and enable the tab + addChildren( *syn ); + emit hasTOC( true ); +} + +void TOC::addChildren( const QDomNode & parentNode, KListViewItem * parentItem ) +{ + // keep track of the current listViewItem + TOCItem * currentItem = 0; + QDomNode n = parentNode.firstChild(); + while( !n.isNull() ) + { + // convert the node to an element (sure it is) + QDomElement e = n.toElement(); + + // insert the entry as top level (listview parented) or 2nd+ level + if ( !parentItem ) + currentItem = new TOCItem( this, currentItem, e ); + else + currentItem = new TOCItem( parentItem, currentItem, e ); + + // descend recursively and advance to the next node + if ( e.hasChildNodes() ) + addChildren( n, currentItem ); + + // open/keep close the item + bool isOpen = false; + if ( e.hasAttribute( "Open" ) ) + isOpen = QVariant( e.attribute( "Open" ) ).toBool(); + currentItem->setOpen( isOpen ); + + n = n.nextSibling(); + } +} + +void TOC::slotExecuted( QListViewItem *i ) +{ + TOCItem* tocItem = dynamic_cast<TOCItem*>( i ); + // that filters clicks on [+] that for a strange reason don't seem to be TOCItem* + if (tocItem == NULL) + return; + const QDomElement & e = tocItem->element(); + + QString externalFileName = e.attribute( "ExternalFileName" ); + if ( !externalFileName.isEmpty() ) + { + KPDFLinkGoto link( externalFileName, getViewport( e ) ); + m_document->processLink( &link ); + } + else + { + m_document->setViewport( getViewport( e ), TOC_ID ); + } +} + +DocumentViewport TOC::getViewport( const QDomElement &e ) const +{ + if ( e.hasAttribute( "Viewport" ) ) + { + // if the node has a viewport, set it + return DocumentViewport( e.attribute( "Viewport" ) ); + } + else if ( e.hasAttribute( "ViewportName" ) ) + { + // if the node references a viewport, get the reference and set it + const QString & page = e.attribute( "ViewportName" ); + const QString & viewport = m_document->getMetaData( "NamedViewport", page ); + if ( !viewport.isNull() ) + return DocumentViewport( viewport ); + } + return DocumentViewport(); +} + +#include "toc.moc" |