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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/.
*
*/
#include <vcl/bitmapex.hxx>
#include <vcl/BitmapColor.hxx>
#include <vcl/BitmapShadowFilter.hxx>
#include <bitmap/BitmapWriteAccess.hxx>
BitmapEx BitmapShadowFilter::execute(BitmapEx const& rBitmapEx) const
{
BitmapEx aBitmapEx(rBitmapEx);
BitmapScopedWriteAccess pWriteAccess(const_cast<Bitmap&>(aBitmapEx.GetBitmap()));
if (!pWriteAccess)
return rBitmapEx;
for (sal_Int32 y(0); y < sal_Int32(pWriteAccess->Height()); y++)
{
Scanline pScanline = pWriteAccess->GetScanline(y);
for (sal_Int32 x(0); x < sal_Int32(pWriteAccess->Width()); x++)
{
const BitmapColor aColor = pWriteAccess->GetColor(y, x);
sal_uInt16 nLuminance(static_cast<sal_uInt16>(aColor.GetLuminance()) + 1);
const BitmapColor aDestColor(
static_cast<sal_uInt8>(
(nLuminance * static_cast<sal_uInt16>(maShadowColor.GetRed())) >> 8),
static_cast<sal_uInt8>(
(nLuminance * static_cast<sal_uInt16>(maShadowColor.GetGreen())) >> 8),
static_cast<sal_uInt8>(
(nLuminance * static_cast<sal_uInt16>(maShadowColor.GetBlue())) >> 8));
pWriteAccess->SetPixelOnData(pScanline, x, aDestColor);
}
}
return aBitmapEx;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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