sw bibliography, refer to a page: add PDF export links

This is similar to hyperlinks or footnote references, but the source
rectangle is a field here and still the links are always external.

With this, the UI and the PDF export result is consistent, it doesn't
happen that you can click on biblio entry fields on the UI, but not in
the PDF export result.

Change-Id: I655ef6d5f79a7e372cdc8448ddc10af9ca488ac5
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/113035
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

1 files changed, 62 insertions, 0 deletions

diff --git a/sw/source/core/text/EnhancedPDFExportHelper.cxx b/sw/source/core/text/EnhancedPDFExportHelper.cxx
index 29719590dc4c..51785be1a1c4 100644
--- a/sw/source/core/text/EnhancedPDFExportHelper.cxx
+++ b/sw/source/core/text/EnhancedPDFExportHelper.cxx
@@ -79,6 +79,7 @@
 #include <frmtool.hxx>
 #include <strings.hrc>
 #include <frameformats.hxx>
+#include <authfld.hxx>
 
 #include <tools/globname.hxx>
 #include <svx/svdobj.hxx>
@@ -1923,6 +1924,8 @@ void SwEnhancedPDFExportHelper::EnhancedPDFExport()
             mrSh.SwCursorShell::ClearMark();
         }
 
+        ExportAuthorityEntryLinks();
+
         // FOOTNOTES
 
         const size_t nFootnoteCount = pDoc->GetFootnoteIdxs().size();
@@ -2162,6 +2165,65 @@ void SwEnhancedPDFExportHelper::EnhancedPDFExport()
     mrOut.Pop();
 }
 
+void SwEnhancedPDFExportHelper::ExportAuthorityEntryLinks()
+{
+    auto pPDFExtOutDevData = dynamic_cast<vcl::PDFExtOutDevData*>(mrOut.GetExtOutDevData());
+    if (!pPDFExtOutDevData)
+    {
+        return;
+    }
+
+    std::vector<SwFormatField*> aFields;
+    SwFieldType* pType = mrSh.GetFieldType(SwFieldIds::TableOfAuthorities, OUString());
+    if (!pType)
+    {
+        return;
+    }
+
+    pType->GatherFields(aFields);
+    const auto pPageFrame = static_cast<const SwPageFrame*>(mrSh.GetLayout()->Lower());
+    for (const auto pFormatField : aFields)
+    {
+        if (!pFormatField->GetTextField() || !pFormatField->IsFieldInDoc())
+        {
+            continue;
+        }
+
+        const auto& rAuthorityField
+            = *static_cast<const SwAuthorityField*>(pFormatField->GetField());
+        if (!rAuthorityField.HasURL())
+        {
+            continue;
+        }
+
+        const OUString& rURL = rAuthorityField.GetAuthEntry()->GetAuthorField(AUTH_FIELD_URL);
+        const SwTextNode& rTextNode = pFormatField->GetTextField()->GetTextNode();
+        if (!lcl_TryMoveToNonHiddenField(mrSh, rTextNode, *pFormatField))
+        {
+            continue;
+        }
+
+        // Select the field.
+        mrSh.SwCursorShell::SetMark();
+        mrSh.SwCursorShell::Right(1, CRSR_SKIP_CHARS);
+
+        // Create the links.
+        for (const auto& rLinkRect : *mrSh.SwCursorShell::GetCursor_())
+        {
+            for (const auto& rLinkPageNum : CalcOutputPageNums(rLinkRect))
+            {
+                tools::Rectangle aRect(SwRectToPDFRect(pPageFrame, rLinkRect.SVRect()));
+                sal_Int32 nLinkId = pPDFExtOutDevData->CreateLink(aRect, rLinkPageNum);
+                IdMapEntry aLinkEntry(rLinkRect, nLinkId);
+                s_aLinkIdMap.push_back(aLinkEntry);
+                pPDFExtOutDevData->SetLinkURL(nLinkId, rURL);
+            }
+        }
+
+        mrSh.SwCursorShell::ClearMark();
+    }
+}
+
 // Returns the page number in the output pdf on which the given rect is located.
 // If this page is duplicated, method will return first occurrence of it.
 sal_Int32 SwEnhancedPDFExportHelper::CalcOutputPageNum( const SwRect& rRect ) const