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65 lines
1.7 KiB
65 lines
1.7 KiB
/***************************************************************************
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helpers.cpp
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Just a few functions needed in several Kjofol-classes
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---------------------------------------------
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Maintainer: Charles Samuels <charles@kde.org>
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***************************************************************************/
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#ifndef KJHELPERS_CPP
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#define KJHELPERS_CPP
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static int grayRgb(TQRgb r)
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{
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return tqGray(tqRed(r), tqGreen(r), tqBlue(r));
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}
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static int isGray(TQRgb r)
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{
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// this is more tolerant than the old version
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// i.e. RGB 162 163 162 is treated as gray too
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// too many broken skins around having such colors
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// cerr << "r("<<tqRed(r)<<","<<tqGreen(r)<<","<<tqBlue(r)<<")"<<endl;
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if ( (tqRed(r)==tqGreen(r)) || (tqRed(r)+1==tqGreen(r)) || (tqRed(r)-1==tqGreen(r)))
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{
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if ( (tqRed(r)==tqBlue(r)) || (tqRed(r)+1==tqBlue(r)) || (tqRed(r)-1==tqBlue(r)))
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{
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// looks a bit like gray, so return true
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return (1);
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}
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}
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// well, it's not gray
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return(0);
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/*
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// mETz: wrong braces in the code below ??
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return (tqRed(r)==tqGreen(r)) && (tqRed(r) == tqBlue(r));
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*/
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}
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// only works little endian
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// UPDATE: should work on both little and big endian now (haven't tested that!)
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// this code is taken from the QT-docu and I hope that this example
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// is one of the working ones ;)
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inline void setPixel1BPP(TQImage &image, int x, int y, bool value)
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{
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if ( image.bitOrder() == TQImage::LittleEndian )
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{
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if (value)
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*(image.scanLine(y) + (x >> 3)) |= 1 << (x & 7);
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else
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*(image.scanLine(y) + (x >> 3)) &= ~(1 << (x & 7));
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}
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else
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{
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if (value)
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*(image.scanLine(y) + (x >> 3)) |= 1 << (7-(x & 7));
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else
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*(image.scanLine(y) + (x >> 3)) &= ~(1 << (7-(x & 7)));
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}
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}
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#endif
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