From ed5640d8b587fbcfed7dd7967f3de04b37a76f26 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 11:06:44 +0200
Subject: Adding upstream version 4:7.4.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 drawinglayer/source/tools/emfpimage.cxx | 80 +++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 drawinglayer/source/tools/emfpimage.cxx

(limited to 'drawinglayer/source/tools/emfpimage.cxx')

diff --git a/drawinglayer/source/tools/emfpimage.cxx b/drawinglayer/source/tools/emfpimage.cxx
new file mode 100644
index 000000000..67a0cef99
--- /dev/null
+++ b/drawinglayer/source/tools/emfpimage.cxx
@@ -0,0 +1,80 @@
+/* -*- 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 .
+ */
+#include <vcl/graphicfilter.hxx>
+#include <sal/log.hxx>
+#include "emfpimage.hxx"
+
+namespace emfplushelper
+{
+    void EMFPImage::Read(SvMemoryStream &s, sal_uInt32 dataSize, bool bUseWholeStream)
+    {
+        sal_uInt32 header, bitmapType;
+        s.ReadUInt32(header).ReadUInt32(type);
+        SAL_INFO("drawinglayer.emf", "EMF+\timage\nEMF+\theader: 0x" << std::hex << header << " type: " << type << std::dec);
+
+        if (ImageDataTypeBitmap == type)
+        {
+            // bitmap
+            s.ReadInt32(width).ReadInt32(height).ReadInt32(stride).ReadUInt32(pixelFormat).ReadUInt32(bitmapType);
+            SAL_INFO("drawinglayer.emf", "EMF+\tbitmap width: " << width << " height: " << height << " stride: " << stride << " pixelFormat: 0x" << std::hex << pixelFormat << " bitmapType: 0x" << bitmapType << std::dec);
+
+            if ((bitmapType != 0) || (width == 0))
+            {
+                // non native formats
+                GraphicFilter filter;
+                filter.ImportGraphic(graphic, u"", s);
+                SAL_INFO("drawinglayer.emf", "EMF+\tbitmap width: " << graphic.GetSizePixel().Width() << " height: " << graphic.GetSizePixel().Height());
+            }
+        }
+        else if (ImageDataTypeMetafile == type)
+        {
+            // metafile
+            sal_uInt32 mfType, mfSize;
+            s.ReadUInt32(mfType).ReadUInt32(mfSize);
+
+            if (bUseWholeStream)
+                dataSize = s.remainingSize();
+            else
+                dataSize -= 16;
+
+            SAL_INFO("drawinglayer.emf", "EMF+\tmetafile type: " << mfType << " dataSize: " << mfSize << " real size calculated from record dataSize: " << dataSize);
+
+            GraphicFilter filter;
+            // workaround buggy metafiles, which have wrong mfSize set (n#705956 for example)
+            SvMemoryStream mfStream(const_cast<char *>(static_cast<char const *>(s.GetData()) + s.Tell()), dataSize, StreamMode::READ);
+            filter.ImportGraphic(graphic, u"", mfStream);
+
+            // debug code - write the stream to debug file /tmp/emf-stream.emf
+#if OSL_DEBUG_LEVEL > 1
+            mfStream.Seek(0);
+            static sal_Int32 emfp_debug_stream_number = 0;
+            OUString emfp_debug_filename = "/tmp/emf-embedded-stream" +
+                OUString::number(emfp_debug_stream_number++) + ".emf";
+
+            SvFileStream file(emfp_debug_filename, StreamMode::WRITE | StreamMode::TRUNC);
+
+            mfStream.WriteStream(file);
+            file.Flush();
+            file.Close();
+#endif
+        }
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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