forked from openkylin/kolourpaint
63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
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/*
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Copyright (c) 2003-2007 Clarence Dang <dang@kde.org>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef kpEffectInvert_H
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#define kpEffectInvert_H
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class QImage;
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class kpEffectInvert
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{
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public:
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enum Channel
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{
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None = 0,
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Red = 1, Green = 2, Blue = 4,
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RGB = Red | Green | Blue
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};
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//
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// Inverts the colours of each pixel in the given image.
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// These functions differ from QImage::invertPixels() in the following ways:
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//
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// 1. for 8-bit images, it inverts the colours of the Colour Table
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// (this means that you would get visually similar results to inversion
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// at higher bit depths - rather than a "random-looking" inversion
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// depending on the contents of the Colour Table)
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// 2. never inverts the Alpha Buffer
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//
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static void applyEffect (QImage *destImagePtr, int channels = RGB);
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static QImage applyEffect (const QImage &img, int channels = RGB);
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};
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#endif // kpEffectInvert_H
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