Add method DocumentToGraphicRenderer::getPageCount()

And use that in sfx2 Redaction code to be independent of
the document/module type

Change-Id: Ic206f7a10a27d8d44566df34a10d009a34adf0a5
Reviewed-on: https://gerrit.libreoffice.org/65971
Tested-by: Jenkins
Reviewed-by: Muhammet Kara <muhammet.kara@collabora.com>

include/svtools/DocumentToGraphicRenderer.hxx

@@ -68,6 +68,7 @@ public:
     ~DocumentToGraphicRenderer();
 
     sal_Int32 getCurrentPage();
+    sal_Int32 getPageCount();
     /**
      * Get list of chapter names for a page, current page is set by
      * renderToGraphic().

sfx2/source/doc/objserv.cxx

@@ -538,22 +538,12 @@ void SfxObjectShell::ExecFile_Impl(SfxRequest &rReq)
             if(!xModel.is())
                 return;
 
-            uno::Reference<text::XTextViewCursorSupplier> xTextViewCursorSupplier(
-                        xModel->getCurrentController(), uno::UNO_QUERY);
-            if(!xTextViewCursorSupplier.is())
-                return;
-
-            uno::Reference<text::XPageCursor> xCursor(xTextViewCursorSupplier->getViewCursor(),
-                                                      uno::UNO_QUERY);
-            if(!xCursor.is())
-                return;
-
-            xCursor->jumpToLastPage();
-            sal_Int16 nPages = xCursor->getPage();
-
             uno::Reference< lang::XComponent > xSourceDoc( xModel );
+
             DocumentToGraphicRenderer aRenderer(xSourceDoc, /*bSelectionOnly=*/false);
 
+            sal_Int32 nPages = aRenderer.getPageCount();
+
             std::vector< GDIMetaFile > aMetaFiles;
 
             for (sal_Int32 nPage = 1; nPage <= nPages; ++nPage)

svtools/source/filter/DocumentToGraphicRenderer.cxx

@@ -253,6 +253,29 @@ sal_Int32 DocumentToGraphicRenderer::getCurrentPage()
     return 1;
 }
 
+sal_Int32 DocumentToGraphicRenderer::getPageCount()
+{
+    Reference< awt::XDevice > xDevice(mxToolkit->createScreenCompatibleDevice( 32, 32 ) );
+
+    uno::Any selection( getSelection() );
+
+    PropertyValues renderProperties;
+
+    renderProperties.realloc( 4 );
+    renderProperties[0].Name = "IsPrinter";
+    renderProperties[0].Value <<= true;
+    renderProperties[1].Name = "RenderDevice";
+    renderProperties[1].Value <<= xDevice;
+    renderProperties[2].Name = "View";
+    renderProperties[2].Value <<= mxController;
+    renderProperties[3].Name = "RenderToGraphic";
+    renderProperties[3].Value <<= true;
+
+    sal_Int32 nPages = mxRenderable->getRendererCount( selection, renderProperties );
+
+    return nPages;
+}
+
 sal_Int32 DocumentToGraphicRenderer::getCurrentPageWriter()
 {
     Reference<text::XTextViewCursorSupplier> xTextViewCursorSupplier(mxModel->getCurrentController(), UNO_QUERY);