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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 final : 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 AlphaMask& rAlphaMask ) const { return Bitmap::operator==(rAlphaMask); }
bool operator!=( const AlphaMask& rAlphaMask ) const { return Bitmap::operator!=(rAlphaMask); }
Bitmap const & GetBitmap() const;
void Erase( sal_uInt8 cTransparency );
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: */
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