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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/BitmapProcessor.hxx>
#include <vcl/bmpacc.hxx>
#include <basegfx/color/bcolortools.hxx>
BitmapEx BitmapProcessor::createLightImage(const BitmapEx& rBitmapEx)
{
const Size aSize(rBitmapEx.GetSizePixel());
Bitmap aBitmap(rBitmapEx.GetBitmap());
Bitmap aDarkBitmap(aSize, 24);
BitmapReadAccess* pRead(aBitmap.AcquireReadAccess());
BitmapWriteAccess* pWrite(aDarkBitmap.AcquireWriteAccess());
if (pRead && pWrite)
{
for (long nY = 0; nY < aSize.Height(); ++nY)
{
for (long nX = 0; nX < aSize.Width(); ++nX)
{
BitmapColor aColor = pRead->HasPalette() ?
pRead->GetPaletteColor(pRead->GetPixelIndex(nY, nX)) :
pRead->GetPixel(nY, nX);
basegfx::BColor aBColor(Color(aColor.Invert()).getBColor());
aBColor = basegfx::tools::rgb2hsl(aBColor);
double fHue = aBColor.getRed();
fHue += 180.0;
while (fHue > 360.0)
fHue -= 360.0;
aBColor.setRed(fHue);
aBColor = basegfx::tools::hsl2rgb(aBColor);
aColor.SetRed(((aBColor.getRed() * 255.0) + 0.5));
aColor.SetGreen(((aBColor.getGreen() * 255.0) + 0.5));
aColor.SetBlue(((aBColor.getBlue() * 255.0) + 0.5));
pWrite->SetPixel(nY, nX, aColor);
}
}
}
Bitmap::ReleaseAccess(pWrite);
Bitmap::ReleaseAccess(pRead);
return BitmapEx(aDarkBitmap, rBitmapEx.GetAlpha());
}
BitmapEx BitmapProcessor::createDisabledImage(const BitmapEx& rBitmapEx)
{
const Size aSize(rBitmapEx.GetSizePixel());
Bitmap aGrey(aSize, 8, &Bitmap::GetGreyPalette(256));
AlphaMask aGreyAlpha(aSize);
Bitmap aBitmap(rBitmapEx.GetBitmap());
BitmapReadAccess* pRead(aBitmap.AcquireReadAccess());
BitmapWriteAccess* pGrey(aGrey.AcquireWriteAccess());
BitmapWriteAccess* pGreyAlpha(aGreyAlpha.AcquireWriteAccess());
BitmapEx aReturnBitmap;
if (rBitmapEx.IsTransparent())
{
AlphaMask aBitmapAlpha(rBitmapEx.GetAlpha());
BitmapReadAccess* pReadAlpha(aBitmapAlpha.AcquireReadAccess());
if (pRead && pReadAlpha && pGrey && pGreyAlpha)
{
BitmapColor aGreyValue(0);
BitmapColor aGreyAlphaValue(0);
for (int nY = 0; nY < aSize.Height(); ++nY)
{
for (int nX = 0; nX < aSize.Width(); ++nX)
{
aGreyValue.SetIndex(pRead->GetLuminance(nY, nX));
pGrey->SetPixel(nY, nX, aGreyValue);
const BitmapColor aBitmapAlphaValue(pReadAlpha->GetPixel(nY, nX));
aGreyAlphaValue.SetIndex(sal_uInt8(std::min(aBitmapAlphaValue.GetIndex() + 178ul, 255ul)));
pGreyAlpha->SetPixel(nY, nX, aGreyAlphaValue);
}
}
}
aBitmapAlpha.ReleaseAccess(pReadAlpha);
aReturnBitmap = BitmapEx(aGrey, aGreyAlpha);
}
else
{
if (pRead && pGrey && pGreyAlpha)
{
BitmapColor aGreyValue(0);
BitmapColor aGreyAlphaValue(0);
for (int nY = 0; nY < aSize.Height(); ++nY)
{
for (int nX = 0; nX < aSize.Width(); ++nX)
{
aGreyValue.SetIndex(pRead->GetLuminance(nY, nX));
pGrey->SetPixel(nY, nX, aGreyValue);
aGreyAlphaValue.SetIndex(128);
pGreyAlpha->SetPixel(nY, nX, aGreyAlphaValue);
}
}
}
aReturnBitmap = BitmapEx(aGrey);
}
Bitmap::ReleaseAccess(pRead);
Bitmap::ReleaseAccess(pGrey);
aGreyAlpha.ReleaseAccess(pGreyAlpha);
return aReturnBitmap;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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