pdfium: add a signature wrapper class

It just hides the underlying FPDF_SIGNATURE, no real member functions
yet.

Change-Id: I37d27c26d6f05b1f8c697a5afe682c795e5d4d1b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/106184
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

1 files changed, 15 insertions, 1 deletions

diff --git a/include/vcl/filter/PDFiumLibrary.hxx b/include/vcl/filter/PDFiumLibrary.hxx
index 2663a6cf03ae..8d139889591a 100644
--- a/include/vcl/filter/PDFiumLibrary.hxx
+++ b/include/vcl/filter/PDFiumLibrary.hxx
@@ -230,6 +230,20 @@ public:
     bool hasTransparency();
 };
 
+/// Represents one digital signature, as exposed by PDFium.
+class VCL_DLLPUBLIC PDFiumSignature final
+{
+private:
+    FPDF_SIGNATURE mpSignature;
+    PDFiumSignature(const PDFiumSignature&) = delete;
+    PDFiumSignature& operator=(const PDFiumSignature&) = delete;
+
+public:
+    PDFiumSignature(FPDF_SIGNATURE pSignature);
+
+    FPDF_SIGNATURE getPointer() { return mpSignature; }
+};
+
 class VCL_DLLPUBLIC PDFiumDocument final
 {
 private:
@@ -251,7 +265,7 @@ public:
     bool saveWithVersion(SvMemoryStream& rStream, int nFileVersion);
 
     std::unique_ptr<PDFiumPage> openPage(int nIndex);
-    FPDF_SIGNATURE getSignature(int nIndex);
+    std::unique_ptr<PDFiumSignature> getSignature(int nIndex);
     std::vector<unsigned int> getTrailerEnds();
 };