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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_INC_SALBMP_HXX
#define INCLUDED_VCL_INC_SALBMP_HXX
#include <tools/gen.hxx>
#include <vcl/checksum.hxx>
#include <vcl/salbtype.hxx>
#include <com/sun/star/rendering/XBitmapCanvas.hpp>
struct BitmapBuffer;
class Color;
class SalGraphics;
class BitmapPalette;
struct BitmapSystemData;
enum class BmpScaleFlag;
class VCL_PLUGIN_PUBLIC SalBitmap
{
public:
SalBitmap()
: mnChecksum(0)
, mbChecksumValid(false)
{
}
virtual ~SalBitmap();
virtual bool Create( const Size& rSize,
sal_uInt16 nBitCount,
const BitmapPalette& rPal ) = 0;
virtual bool Create( const SalBitmap& rSalBmp ) = 0;
virtual bool Create( const SalBitmap& rSalBmp,
SalGraphics* pGraphics ) = 0;
virtual bool Create( const SalBitmap& rSalBmp,
sal_uInt16 nNewBitCount ) = 0;
virtual bool Create( const css::uno::Reference< css::rendering::XBitmapCanvas >& rBitmapCanvas,
Size& rSize,
bool bMask = false ) = 0;
virtual void Destroy() = 0;
virtual Size GetSize() const = 0;
virtual sal_uInt16 GetBitCount() const = 0;
virtual BitmapBuffer* AcquireBuffer( BitmapAccessMode nMode ) = 0;
virtual void ReleaseBuffer( BitmapBuffer* pBuffer, BitmapAccessMode nMode ) = 0;
virtual bool GetSystemData( BitmapSystemData& rData ) = 0;
virtual bool ScalingSupported() const = 0;
virtual bool Scale( const double& rScaleX, const double& rScaleY, BmpScaleFlag nScaleFlag ) = 0;
virtual bool Replace( const Color& rSearchColor, const Color& rReplaceColor, sal_uInt8 nTol ) = 0;
virtual bool ConvertToGreyscale()
{
return false;
}
void GetChecksum(BitmapChecksum& rChecksum) const
{
updateChecksum();
if (!mbChecksumValid)
rChecksum = 0; // back-compat
else
rChecksum = mnChecksum;
}
void InvalidateChecksum()
{
mbChecksumValid = false;
}
protected:
BitmapChecksum mnChecksum;
bool mbChecksumValid;
protected:
virtual void updateChecksum() const
{
if (mbChecksumValid)
return;
BitmapChecksum nCrc = 0;
SalBitmap* pThis = const_cast<SalBitmap*>(this);
BitmapBuffer* pBuf = pThis->AcquireBuffer(BitmapAccessMode::Read);
if (pBuf)
{
nCrc = pBuf->maPalette.GetChecksum();
nCrc = vcl_get_checksum(nCrc, pBuf->mpBits, pBuf->mnScanlineSize * pBuf->mnHeight);
pThis->ReleaseBuffer(pBuf, BitmapAccessMode::Read);
pThis->mnChecksum = nCrc;
pThis->mbChecksumValid = true;
}
else
{
pThis->mbChecksumValid = false;
}
}
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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