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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 <tools/color.hxx>
#include <tools/helpers.hxx>
#include <bitmapwriteaccess.hxx>
#include <BitmapColorizeFilter.hxx>
BitmapEx BitmapColorizeFilter::execute(BitmapEx const& rBitmapEx) const
{
Bitmap aBitmap = rBitmapEx.GetBitmap();
BitmapScopedWriteAccess pWriteAccess(aBitmap);
if (!pWriteAccess)
return rBitmapEx;
BitmapColor aBitmapColor;
const long nW = pWriteAccess->Width();
const long nH = pWriteAccess->Height();
std::vector<sal_uInt8> aMapR(256);
std::vector<sal_uInt8> aMapG(256);
std::vector<sal_uInt8> aMapB(256);
long nX;
long nY;
const sal_uInt8 cR = maColor.GetRed();
const sal_uInt8 cG = maColor.GetGreen();
const sal_uInt8 cB = maColor.GetBlue();
for (nX = 0; nX < 256; ++nX)
{
aMapR[nX] = MinMax((nX + cR) / 2, 0, 255);
aMapG[nX] = MinMax((nX + cG) / 2, 0, 255);
aMapB[nX] = MinMax((nX + cB) / 2, 0, 255);
}
if (pWriteAccess->HasPalette())
{
for (sal_uInt16 i = 0, nCount = pWriteAccess->GetPaletteEntryCount(); i < nCount; i++)
{
const BitmapColor& rCol = pWriteAccess->GetPaletteColor(i);
aBitmapColor.SetRed(aMapR[rCol.GetRed()]);
aBitmapColor.SetGreen(aMapG[rCol.GetGreen()]);
aBitmapColor.SetBlue(aMapB[rCol.GetBlue()]);
pWriteAccess->SetPaletteColor(i, aBitmapColor);
}
}
else if (pWriteAccess->GetScanlineFormat() == ScanlineFormat::N24BitTcBgr)
{
for (nY = 0; nY < nH; ++nY)
{
Scanline pScan = pWriteAccess->GetScanline(nY);
for (nX = 0; nX < nW; ++nX)
{
*pScan = aMapB[*pScan];
pScan++;
*pScan = aMapG[*pScan];
pScan++;
*pScan = aMapR[*pScan];
pScan++;
}
}
}
else
{
for (nY = 0; nY < nH; ++nY)
{
Scanline pScanline = pWriteAccess->GetScanline(nY);
for (nX = 0; nX < nW; ++nX)
{
aBitmapColor = pWriteAccess->GetPixelFromData(pScanline, nX);
aBitmapColor.SetRed(aMapR[aBitmapColor.GetRed()]);
aBitmapColor.SetGreen(aMapG[aBitmapColor.GetGreen()]);
aBitmapColor.SetBlue(aMapB[aBitmapColor.GetBlue()]);
pWriteAccess->SetPixelOnData(pScanline, nX, aBitmapColor);
}
}
}
return rBitmapEx;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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