office/okular
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mirror of https://invent.kde.org/graphics/okular synced 2024-09-13 13:11:41 +00:00
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properly update when an annotation is added or removed (TODO: when is just changed)

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also, return the PageRole for the page tree items

svn path=/trunk/KDE/kdegraphics/okular/; revision=710034
This commit is contained in:
Pino Toscano 2007-09-08 23:39:30 +00:00
parent 4415a36e3e
commit e6cc6a58c4
1 changed files with 116 additions and 1 deletions
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117
ui/annotationmodel.cpp
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@ -42,9 +42,11 @@ public:
virtual uint observerId() const;
virtual void notifySetup( const QVector< Okular::Page * > &pages, bool documentChanged );
virtual void notifyPageChanged( int page, int flags );
QModelIndex indexForItem( AnnotationItem *item ) const;
void rebuildTree( const QVector< Okular::Page * > &pages );
AnnotationItem* findItem( int page, int *index ) const;
AnnotationModel *q;
AnnotationItem *root;
@ -104,6 +106,102 @@ void AnnotationModelPrivate::notifySetup( const QVector< Okular::Page * > &pages
rebuildTree( pages );
}
void AnnotationModelPrivate::notifyPageChanged( int page, int flags )
{
// we are strictly interested in annotations
if ( !(flags & Okular::DocumentObserver::Annotations ) )
return;
QLinkedList< Okular::Annotation* > annots = document->page( page )->annotations();
int annItemIndex = -1;
AnnotationItem *annItem = findItem( page, &annItemIndex );
// case 1: the page has no more annotations
// => remove the branch, if any
if ( annots.isEmpty() )
{
if ( annItem )
{
q->beginRemoveRows( indexForItem( root ), annItemIndex, annItemIndex );
delete root->children.at( annItemIndex );
root->children.removeAt( annItemIndex );
q->endRemoveRows();
}
return;
}
// case 2: no existing branch
// => add a new branch, and add the annotations for the page
if ( !annItem )
{
int i = 0;
while ( i < root->children.count() && root->children.at( i )->page < page ) ++i;
AnnotationItem *annItem = new AnnotationItem();
annItem->page = page;
annItem->parent = root;
q->beginInsertRows( indexForItem( root ), i, i );
annItem->parent->children.insert( i, annItem );
q->endInsertRows();
QLinkedList< Okular::Annotation* >::ConstIterator it = annots.begin(), itEnd = annots.end();
int newid = 0;
for ( ; it != itEnd; ++it, ++newid )
{
q->beginInsertRows( indexForItem( annItem ), newid, newid );
new AnnotationItem( annItem, *it );
q->endInsertRows();
}
return;
}
// case 3: existing branch, less annotations than items
// => lookup and remove the annotations
if ( annItem->children.count() > annots.count() )
{
for ( int i = annItem->children.count(); i > 0; --i )
{
Okular::Annotation *ref = annItem->children.at( i - 1 )->annotation;
bool found = false;
QLinkedList< Okular::Annotation* >::ConstIterator it = annots.begin(), itEnd = annots.end();
for ( ; !found && it != itEnd; ++it )
{
if ( ( *it ) == ref )
found = true;
}
if ( !found )
{
q->beginRemoveRows( indexForItem( annItem ), i - 1, i - 1 );
annItem->children.removeAt( i - 1 );
q->endRemoveRows();
}
}
return;
}
// case 4: existing branch, less items than annotations
// => lookup and add annotations if not in the branch
if ( annots.count() > annItem->children.count() )
{
QLinkedList< Okular::Annotation* >::ConstIterator it = annots.begin(), itEnd = annots.end();
for ( ; it != itEnd; ++it )
{
Okular::Annotation *ref = *it;
bool found = false;
int count = annItem->children.count();
for ( int i = 0; !found && i < count; ++i )
{
if ( ref == annItem->children.at( i )->annotation )
found = true;
}
if ( !found )
{
q->beginInsertRows( indexForItem( annItem ), count, count );
new AnnotationItem( annItem, ref );
q->endInsertRows();
}
}
return;
}
// case 5: the data of some annotation changed
// TODO: what do we do in this case?
}
QModelIndex AnnotationModelPrivate::indexForItem( AnnotationItem *item ) const
{
if ( item->parent )
@ -134,6 +232,23 @@ void AnnotationModelPrivate::rebuildTree( const QVector< Okular::Page * > &pages
emit q->layoutChanged();
}
AnnotationItem* AnnotationModelPrivate::findItem( int page, int *index ) const
{
for ( int i = 0; i < root->children.count(); ++i )
{
AnnotationItem *tmp = root->children.at( i );
if ( tmp->page == page )
{
if ( index )
*index = i;
return tmp;
}
}
if ( index )
*index = -1;
return 0;
}
AnnotationModel::AnnotationModel( Okular::Document *document, QObject *parent )
: QAbstractItemModel( parent ), d( new AnnotationModelPrivate( this ) )
@ -162,7 +277,7 @@ QVariant AnnotationModel::data( const QModelIndex &index, int role ) const
AnnotationItem *item = static_cast< AnnotationItem* >( index.internalPointer() );
if ( !item->annotation )
{
if ( role == Qt::DisplayRole )
if ( role == Qt::DisplayRole || role == PageRole )
return item->page;
return QVariant();
}