forked from amazingfate/loongoffice
59 lines
2.0 KiB
C++
59 lines
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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*/
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#include <vcl/BitmapProcessor.hxx>
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#include <vcl/bmpacc.hxx>
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#include <basegfx/color/bcolortools.hxx>
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BitmapEx BitmapProcessor::createLightImage(const BitmapEx& rBitmapEx)
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{
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const Size aSize(rBitmapEx.GetSizePixel());
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Bitmap aBitmap(rBitmapEx.GetBitmap());
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Bitmap aDarkBitmap(aSize, 24);
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BitmapReadAccess* pRead(aBitmap.AcquireReadAccess());
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BitmapWriteAccess* pWrite(aDarkBitmap.AcquireWriteAccess());
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if (pRead && pWrite)
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{
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for (long nY = 0; nY < aSize.Height(); ++nY)
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{
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for (long nX = 0; nX < aSize.Width(); ++nX)
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{
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BitmapColor aColor = pRead->HasPalette() ?
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pRead->GetPaletteColor(pRead->GetPixelIndex(nY, nX)) :
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pRead->GetPixel(nY, nX);
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basegfx::BColor aBColor(Color(aColor.Invert()).getBColor());
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aBColor = basegfx::tools::rgb2hsl(aBColor);
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double fHue = aBColor.getRed();
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fHue += 180.0;
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while (fHue > 360.0)
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fHue -= 360.0;
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aBColor.setRed(fHue);
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aBColor = basegfx::tools::hsl2rgb(aBColor);
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aColor.SetRed(((aBColor.getRed() * 255.0) + 0.5));
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aColor.SetGreen(((aBColor.getGreen() * 255.0) + 0.5));
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aColor.SetBlue(((aBColor.getBlue() * 255.0) + 0.5));
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pWrite->SetPixel(nY, nX, aColor);
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}
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}
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}
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Bitmap::ReleaseAccess(pWrite);
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Bitmap::ReleaseAccess(pRead);
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return BitmapEx(aDarkBitmap, rBitmapEx.GetAlpha());
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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