emfplus: add rough version of local reader

Complete redevelopent is too expensive, start with
adding a copy of the existing vcl importer which
will in the next steps be adapted to import primitives
instead of MetaFile(Actions). Adapted namespace, made
compile and added sample code to roughly use it

Change-Id: I79e7ea0d78099fbbe18e2a595457b2ab353f58ea

1 files changed, 55 insertions, 0 deletions

diff --git a/emfio/inc/emfreader.hxx b/emfio/inc/emfreader.hxx
new file mode 100644
index 000000000000..c4f7e17e574d
--- /dev/null
+++ b/emfio/inc/emfreader.hxx
@@ -0,0 +1,55 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_EMFIO_INC_EMFREADER_HXX
+#define INCLUDED_EMFIO_INC_EMFREADER_HXX
+
+#include <mtftools.hxx>
+
+namespace emfio
+{
+    class EmfReader : public MtfTools
+    {
+        bool        bRecordPath;
+        sal_Int32   nRecordCount;
+        bool        bEMFPlus;
+
+        bool        ReadHeader();
+        // reads and converts the rectangle
+        static tools::Rectangle ReadRectangle(sal_Int32, sal_Int32, sal_Int32, sal_Int32);
+
+    public:
+        EmfReader(SvStream& rStreamWMF, GDIMetaFile& rGDIMetaFile, FilterConfigItem* pConfigItem = nullptr);
+        ~EmfReader();
+
+        bool ReadEnhWMF();
+    private:
+        template <class T> void ReadAndDrawPolyPolygon();
+        template <class T> void ReadAndDrawPolyLine();
+        template <class T> tools::Polygon ReadPolygon(sal_uInt32 nStartIndex, sal_uInt32 nPoints);
+        template <class T, class Drawer> void ReadAndDrawPolygon(Drawer drawer, const bool skipFirst);
+
+        tools::Rectangle ReadRectangle();
+        void ReadEMFPlusComment(sal_uInt32 length, bool& bHaveDC);
+    };
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */