lok::Document: add registerCallback()

So that LOK clients can invoke the new
vcl::ITiledRenderable::registerCallback().

Change-Id: I6d9974acbd7fb5eea217c88f963e6ebb10343078

1 files changed, 18 insertions, 0 deletions

diff --git a/desktop/source/lib/init.cxx b/desktop/source/lib/init.cxx
index 8a8538e77c3b..08a353fbd2d5 100644
--- a/desktop/source/lib/init.cxx
+++ b/desktop/source/lib/init.cxx
@@ -199,6 +199,9 @@ static void doc_getDocumentSize(LibreOfficeKitDocument* pThis,
                                 long* pHeight);
 static void doc_initializeForRendering(LibreOfficeKitDocument* pThis);
 
+static void doc_registerCallback(LibreOfficeKitDocument* pThis,
+                                LibreOfficeKitCallback pCallback,
+                                void* pData);
 
 struct LibLODocument_Impl : public _LibreOfficeKitDocument
 {
@@ -225,6 +228,7 @@ struct LibLODocument_Impl : public _LibreOfficeKitDocument
             m_pDocumentClass->paintTile = doc_paintTile;
             m_pDocumentClass->getDocumentSize = doc_getDocumentSize;
             m_pDocumentClass->initializeForRendering = doc_initializeForRendering;
+            m_pDocumentClass->registerCallback = doc_registerCallback;
 
             gDocumentClass = m_pDocumentClass;
         }
@@ -620,6 +624,20 @@ static void doc_initializeForRendering(LibreOfficeKitDocument* pThis)
     }
 }
 
+static void doc_registerCallback(LibreOfficeKitDocument* pThis,
+                                LibreOfficeKitCallback pCallback,
+                                void* pData)
+{
+    ITiledRenderable* pDoc = getTiledRenderable(pThis);
+    if (!pDoc)
+    {
+        gImpl->maLastExceptionMsg = "Document doesn't support tiled rendering";
+        return;
+    }
+
+    pDoc->registerCallback(pCallback, pData);
+}
+
 static char* lo_getError (LibreOfficeKit *pThis)
 {
     LibLibreOffice_Impl* pLib = static_cast<LibLibreOffice_Impl*>(pThis);