void PdfPagesTree::InsertPagesIntoNode( PdfObject* pParent, const PdfObjectList & rlstParents,
int nIndex, const std::vector<PdfObject*>& vecPages )
{
if( !pParent || !vecPages.size() )
{
PODOFO_RAISE_ERROR( ePdfError_InvalidHandle );
}
// 1. Add the reference of the new page to the kids array of pParent
// 2. Increase count of every node in lstParents (which also includes pParent)
// 3. Add Parent key to the page
// 1. Add reference
const PdfArray oldKids = pParent->GetDictionary().GetKey( PdfName("Kids") )->GetArray();
PdfArray newKids;
newKids.reserve( oldKids.GetSize() + vecPages.size() );
bool bIsPushedIn = false;
int i=0;
for (PdfArray::const_iterator it=oldKids.begin(); it!=oldKids.end(); ++it, ++i )
{
if ( !bIsPushedIn && (nIndex < i) ) // Pushing before
{
for (std::vector<PdfObject*>::const_iterator itPages=vecPages.begin(); itPages!=vecPages.end(); ++itPages)
{
newKids.push_back( (*itPages)->Reference() ); // Push all new kids at once
}
bIsPushedIn = true;
}
newKids.push_back( *it ); // Push in the old kids
}
// If new kids are still not pushed in then they may be appending to the end
if ( !bIsPushedIn && ( (nIndex + 1) == static_cast<int>(oldKids.size())) )
{
for (std::vector<PdfObject*>::const_iterator itPages=vecPages.begin(); itPages!=vecPages.end(); ++itPages)
{
newKids.push_back( (*itPages)->Reference() ); // Push all new kids at once
}
bIsPushedIn = true;
}
pParent->GetDictionary().AddKey( PdfName("Kids"), newKids );
// 2. increase count
for ( PdfObjectList::const_reverse_iterator itParents = rlstParents.rbegin(); itParents != rlstParents.rend(); ++itParents )
{
this->ChangePagesCount( *itParents, vecPages.size() );
}
// 3. add parent key to each of the pages
for (std::vector<PdfObject*>::const_iterator itPages=vecPages.begin(); itPages!=vecPages.end(); ++itPages)
{
(*itPages)->GetDictionary().AddKey( PdfName("Parent"), pParent->Reference() );
}
}
void PdfPagesTree::InsertPageIntoNode( PdfObject* pParent, const PdfObjectList & rlstParents,
int nIndex, PdfObject* pPage )
{
if( !pParent || !pPage )
{
PODOFO_RAISE_ERROR( ePdfError_InvalidHandle );
}
// 1. Add the reference of the new page to the kids array of pParent
// 2. Increase count of every node in lstParents (which also includes pParent)
// 3. Add Parent key to the page
// 1. Add reference
const PdfArray oldKids = pParent->GetDictionary().GetKey( PdfName("Kids") )->GetArray();
PdfArray::const_iterator it = oldKids.begin();
PdfArray newKids;
newKids.reserve( oldKids.GetSize() + 1 );
if( nIndex < 0 )
{
newKids.push_back( pPage->Reference() );
}
int i = 0;
while( it != oldKids.end() )
{
newKids.push_back( *it );
if( i == nIndex )
newKids.push_back( pPage->Reference() );
++i;
++it;
}
/*
PdfVariant var2( newKids );
std::string str2;
var2.ToString(str2);
printf("newKids= %s\n", str2.c_str() );
*/
pParent->GetDictionary().AddKey( PdfName("Kids"), newKids );
// 2. increase count
PdfObjectList::const_reverse_iterator itParents = rlstParents.rbegin();
while( itParents != rlstParents.rend() )
{
this->ChangePagesCount( *itParents, 1 );
++itParents;
}
// 3. add parent key to the page
pPage->GetDictionary().AddKey( PdfName("Parent"), pParent->Reference() );
}
void PdfPagesTree::DeletePageNode( PdfObject* pParent, int nIndex )
{
PdfArray kids = pParent->GetDictionary().GetKey( PdfName("Kids") )->GetArray();
kids.erase( kids.begin() + nIndex );
pParent->GetDictionary().AddKey( PdfName("Kids"), kids );
}