tdf#117901 Write signature line images as emf to ooxml

Change-Id: Idbf60be3cef2d9dde454da0279d2810488b1e157
Reviewed-on: https://gerrit.libreoffice.org/56871
Tested-by: Jenkins
Reviewed-by: Samuel Mehrbrodt <Samuel.Mehrbrodt@cib.de>

1 files changed, 35 insertions, 0 deletions

diff --git a/xmlsecurity/source/helper/ooxmlsecexporter.cxx b/xmlsecurity/source/helper/ooxmlsecexporter.cxx
index abb0a648b520..9ca95c5d755e 100644
--- a/xmlsecurity/source/helper/ooxmlsecexporter.cxx
+++ b/xmlsecurity/source/helper/ooxmlsecexporter.cxx
@@ -18,13 +18,16 @@
 #include <comphelper/ofopxmlhelper.hxx>
 #include <o3tl/make_unique.hxx>
 #include <rtl/ref.hxx>
+#include <svx/xoutbmp.hxx>
 #include <unotools/datetime.hxx>
+#include <vcl/salctype.hxx>
 #include <xmloff/attrlist.hxx>
 
 #include <documentsignaturehelper.hxx>
 #include <xsecctl.hxx>
 
 using namespace com::sun::star;
+using namespace css::xml::sax;
 
 struct OOXMLSecExporter::Impl
 {
@@ -68,6 +71,7 @@ struct OOXMLSecExporter::Impl
     /// Writes <SignatureInfoV1>.
     void writeSignatureInfo();
     void writePackageSignature();
+    void writeSignatureLineImages();
 };
 
 bool OOXMLSecExporter::Impl::isOOXMLBlacklist(const OUString& rStreamName)
@@ -417,6 +421,36 @@ void OOXMLSecExporter::Impl::writePackageSignature()
     m_xDocumentHandler->endElement("Object");
 }
 
+void OOXMLSecExporter::Impl::writeSignatureLineImages()
+{
+    if (m_rInformation.aValidSignatureImage.is())
+    {
+        rtl::Reference<SvXMLAttributeList> pAttributeList(new SvXMLAttributeList());
+        pAttributeList->AddAttribute("Id", "idValidSigLnImg");
+        m_xDocumentHandler->startElement(
+            "Object", uno::Reference<xml::sax::XAttributeList>(pAttributeList.get()));
+        OUString aGraphicInBase64;
+        Graphic aGraphic(m_rInformation.aValidSignatureImage);
+        if (!XOutBitmap::GraphicToBase64(aGraphic, aGraphicInBase64, false, ConvertDataFormat::EMF))
+            SAL_WARN("xmlsecurity.helper", "could not convert graphic to base64");
+        m_xDocumentHandler->characters(aGraphicInBase64);
+        m_xDocumentHandler->endElement("Object");
+    }
+    if (m_rInformation.aInvalidSignatureImage.is())
+    {
+        rtl::Reference<SvXMLAttributeList> pAttributeList(new SvXMLAttributeList());
+        pAttributeList->AddAttribute("Id", "idInvalidSigLnImg");
+        m_xDocumentHandler->startElement(
+            "Object", uno::Reference<xml::sax::XAttributeList>(pAttributeList.get()));
+        OUString aGraphicInBase64;
+        Graphic aGraphic(m_rInformation.aInvalidSignatureImage);
+        if (!XOutBitmap::GraphicToBase64(aGraphic, aGraphicInBase64, false, ConvertDataFormat::EMF))
+            SAL_WARN("xmlsecurity.helper", "could not convert graphic to base64");
+        m_xDocumentHandler->characters(aGraphicInBase64);
+        m_xDocumentHandler->endElement("Object");
+    }
+}
+
 OOXMLSecExporter::OOXMLSecExporter(const uno::Reference<uno::XComponentContext>& xComponentContext,
                                    const uno::Reference<embed::XStorage>& xRootStorage,
                                    const uno::Reference<xml::sax::XDocumentHandler>& xDocumentHandler,
@@ -440,6 +474,7 @@ void OOXMLSecExporter::writeSignature()
     m_pImpl->writePackageObject();
     m_pImpl->writeOfficeObject();
     m_pImpl->writePackageSignature();
+    m_pImpl->writeSignatureLineImages();
 
     m_pImpl->m_xDocumentHandler->endElement("Signature");
 }