tdf#118244 pdfexport: radio buttons use groupname now

The previous implementation grouped radio buttons if their
object name was the same. Likely this is a very old implementation,
because the current radio buttons have a groupname property which
links them together (although that too needed fixing in doc/docx),
and their object names are unique.

The old implementation still works - so that still needs to be
supported, but I think I'll do that in a separate patch, so
that it can be easily reverted if the old implementation is
deprecated.

Edge cases tested:
-groupID of 0 works fine - doesn't have to be 1-based.
-empty group name works fine (but breaks the old impl).
-writer, calc,

Change-Id: I84aebdac18b9edfa5ffcbfb23c15d0f37fcd47d1
Reviewed-on: https://gerrit.libreoffice.org/62742
Tested-by: Jenkins
Reviewed-by: Justin Luth <justin_luth@sil.org>

2 files changed, 39 insertions, 0 deletions

diff --git a/vcl/qa/cppunit/pdfexport/data/tdf118244_radioButtonGroup.odt b/vcl/qa/cppunit/pdfexport/data/tdf118244_radioButtonGroup.odt
new file mode 100644
index 000000000000..caabc4987c30
--- /dev/null
+++ b/vcl/qa/cppunit/pdfexport/data/tdf118244_radioButtonGroup.odt
diff --git a/vcl/qa/cppunit/pdfexport/pdfexport.cxx b/vcl/qa/cppunit/pdfexport/pdfexport.cxx
index 1ee110972865..71fd198a0e35 100644
--- a/vcl/qa/cppunit/pdfexport/pdfexport.cxx
+++ b/vcl/qa/cppunit/pdfexport/pdfexport.cxx
@@ -94,6 +94,7 @@ public:
     void testTdf99680();
     void testTdf99680_2();
     void testTdf108963();
+    void testTdf118244_radioButtonGroup();
 #if HAVE_MORE_FONTS
     /// Test writing ToUnicode CMAP for LTR ligatures.
     void testTdf115117_1();
@@ -132,6 +133,7 @@ public:
     CPPUNIT_TEST(testTdf99680);
     CPPUNIT_TEST(testTdf99680_2);
     CPPUNIT_TEST(testTdf108963);
+    CPPUNIT_TEST(testTdf118244_radioButtonGroup);
 #if HAVE_MORE_FONTS
     CPPUNIT_TEST(testTdf115117_1);
     CPPUNIT_TEST(testTdf115117_1a);
@@ -872,6 +874,43 @@ void PdfExportTest::testTdf108963()
     CPPUNIT_ASSERT_EQUAL(1, nYellowPathCount);
 }
 
+void PdfExportTest::testTdf118244_radioButtonGroup()
+{
+    vcl::filter::PDFDocument aDocument;
+    load("tdf118244_radioButtonGroup.odt", aDocument);
+
+    // The document has one page.
+    std::vector<vcl::filter::PDFObjectElement*> aPages = aDocument.GetPages();
+    CPPUNIT_ASSERT_EQUAL(static_cast<size_t>(1), aPages.size());
+
+    // There are eight radio buttons.
+    auto pAnnots = dynamic_cast<vcl::filter::PDFArrayElement*>(aPages[0]->Lookup("Annots"));
+    CPPUNIT_ASSERT(pAnnots);
+    CPPUNIT_ASSERT_EQUAL_MESSAGE("# of radio buttons",static_cast<size_t>(8), pAnnots->GetElements().size());
+
+    sal_uInt32 nRadioGroups = 0;
+    for ( const auto& aElement : aDocument.GetElements() )
+    {
+        auto pObject = dynamic_cast<vcl::filter::PDFObjectElement*>(aElement.get());
+        if ( !pObject )
+            continue;
+        auto pType = dynamic_cast<vcl::filter::PDFNameElement*>(pObject->Lookup("FT"));
+        if ( pType && pType->GetValue() == "Btn" )
+        {
+            auto pKids = dynamic_cast<vcl::filter::PDFArrayElement*>(pObject->Lookup("Kids"));
+            if ( pKids )
+            {
+                size_t expectedSize = 2;
+                ++nRadioGroups;
+                if ( nRadioGroups == 2 )
+                    expectedSize = 5;
+                CPPUNIT_ASSERT_EQUAL(expectedSize, pKids->GetElements().size());
+            }
+        }
+    }
+    CPPUNIT_ASSERT_EQUAL_MESSAGE("# of radio groups", sal_uInt32(2), nRadioGroups);
+}
+
 #if HAVE_MORE_FONTS
 // This requires Carlito font, if it is missing the test will most likely
 // fail.