Support copying objects from another QPDF object

This includes QPDF::copyForeignObject and supporting foreign objects
as arguments to addPage*.

1 files changed, 7 insertions, 0 deletions

diff --git a/libqpdf/QPDF_pages.cc b/libqpdf/QPDF_pages.cc
index 818215c4..ddb672a1 100644
--- a/libqpdf/QPDF_pages.cc
+++ b/libqpdf/QPDF_pages.cc
@@ -89,6 +89,7 @@ QPDF::updateAllPagesCache()
     QTC::TC("qpdf", "QPDF updateAllPagesCache");
     this->all_pages.clear();
     this->pageobj_to_pages_pos.clear();
+    this->pushed_inherited_attributes_to_pages = false;
     getAllPages();
 }
 
@@ -161,6 +162,12 @@ QPDF::insertPage(QPDFObjectHandle newpage, int pos)
         QTC::TC("qpdf", "QPDF insert non-indirect page");
         newpage = this->makeIndirectObject(newpage);
     }
+    else if (newpage.getOwningQPDF() != this)
+    {
+        QTC::TC("qpdf", "QPDF insert foreign page");
+        newpage.getOwningQPDF()->pushInheritedAttributesToPage();
+        newpage = this->copyForeignObject(newpage, true);
+    }
     else
     {
         QTC::TC("qpdf", "QPDF insert indirect page");