1 files changed, 63 insertions, 0 deletions
diff --git a/include/vcl/pngread.hxx b/include/vcl/pngread.hxx
new file mode 100644
index 000000000..0fda677e2
--- /dev/null
+++ b/include/vcl/pngread.hxx
@@ -0,0 +1,63 @@
+/* -*- 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_VCL_PNGREAD_HXX
+#define INCLUDED_VCL_PNGREAD_HXX
+
+#include <vcl/dllapi.h>
+#include <vcl/bitmapex.hxx>
+#include <memory>
+#include <vector>
+
+namespace vcl
+{
+
+class PNGReaderImpl;
+
+class VCL_DLLPUBLIC PNGReader
+{
+    std::unique_ptr<PNGReaderImpl> mpImpl;
+
+public:
+
+    /* the PNG chunks are read within the c'tor, so the stream will
+    be positioned at the end of the PNG */
+    explicit PNGReader(SvStream& rStream);
+    ~PNGReader();
+
+    /* an empty preview size hint (=default) will read the whole image
+    */
+    BitmapEx Read();
+
+    // retrieve every chunk that resides inside the PNG
+    struct ChunkData
+    {
+        sal_uInt32 nType = 0;
+        std::vector<sal_uInt8> aData;
+    };
+    const std::vector<ChunkData>& GetChunks() const;
+
+    void SetIgnoreGammaChunk(bool bIgnoreGammaChunk);
+};
+
+} // end namespace vcl
+
+#endif // INCLUDED_VCL_PNGREAD_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */