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+/* -*- 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_ALPHA_HXX
+#define INCLUDED_VCL_ALPHA_HXX
+
+#include <sal/config.h>
+
+#include <utility>
+
+#include <vcl/dllapi.h>
+#include <vcl/bitmap.hxx>
+
+class BitmapEx;
+
+class VCL_DLLPUBLIC AlphaMask : public Bitmap
+{
+public:
+
+ AlphaMask();
+ explicit AlphaMask( const Bitmap& rBitmap );
+ AlphaMask( const AlphaMask& rAlphaMask );
+ AlphaMask( AlphaMask&& rAlphaMask );
+ explicit AlphaMask( const Size& rSizePixel, const sal_uInt8* pEraseTransparency = nullptr );
+ virtual ~AlphaMask() override;
+
+ AlphaMask& operator=( const Bitmap& rBitmap );
+ AlphaMask& operator=( const AlphaMask& rAlphaMask ) { return static_cast<AlphaMask&>( Bitmap::operator=( rAlphaMask ) ); }
+ AlphaMask& operator=( AlphaMask&& rAlphaMask ) noexcept { return static_cast<AlphaMask&>( Bitmap::operator=( std::move(rAlphaMask) ) ); }
+ bool operator!() const { return Bitmap::operator!(); }
+ bool operator==( const AlphaMask& rAlphaMask ) const { return Bitmap::operator==(rAlphaMask); }
+ bool operator!=( const AlphaMask& rAlphaMask ) const { return Bitmap::operator!=(rAlphaMask); }
+
+ void SetPrefMapMode( const MapMode& rMapMode ) { Bitmap::SetPrefMapMode( rMapMode ); }
+
+ void SetPrefSize( const Size& rSize ) { Bitmap::SetPrefSize( rSize ); }
+
+ Bitmap const & GetBitmap() const;
+
+ void Erase( sal_uInt8 cTransparency );
+ void Replace( const Bitmap& rMask, sal_uInt8 rReplaceTransparency );
+ void Replace( sal_uInt8 cSearchTransparency, sal_uInt8 cReplaceTransparency );
+ void BlendWith(const Bitmap& rOther);
+
+ BitmapReadAccess* AcquireAlphaReadAccess() { return Bitmap::AcquireReadAccess(); }
+ BitmapWriteAccess* AcquireAlphaWriteAccess() { return Bitmap::AcquireWriteAccess(); }
+
+ void ReleaseAccess( BitmapReadAccess* pAccess );
+
+ typedef vcl::ScopedBitmapAccess<BitmapReadAccess, AlphaMask, &AlphaMask::AcquireAlphaReadAccess> ScopedReadAccess;
+
+ using Bitmap::IsEmpty;
+
+private:
+ friend class BitmapEx;
+ friend class ::OutputDevice;
+ friend bool VCL_DLLPUBLIC ReadDIBBitmapEx(BitmapEx& rTarget, SvStream& rIStm, bool bFileHeader, bool bMSOFormat);
+
+ SAL_DLLPRIVATE const Bitmap& ImplGetBitmap() const;
+ SAL_DLLPRIVATE void ImplSetBitmap( const Bitmap& rBitmap );
+
+};
+
+#endif // INCLUDED_VCL_ALPHA_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */