| -rw-r--r-- | noncore/styles/theme/ogfxeffect.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/noncore/styles/theme/ogfxeffect.cpp b/noncore/styles/theme/ogfxeffect.cpp index cc5bbcd..2071a67 100644 --- a/noncore/styles/theme/ogfxeffect.cpp +++ b/noncore/styles/theme/ogfxeffect.cpp @@ -1,208 +1,210 @@ /* This file is part of the KDE libraries Copyright (C) 1998, 1999 Christian Tibirna <ctibirna@total.net> (C) 1998, 1999 Daniel M. Duley <mosfet@kde.org> (C) 1998, 1999 Dirk A. Mueller <mueller@kde.org> */ // $Id$ #include <qimage.h> #include <qpainter.h> #include <qpe/qmath.h> #include "ogfxeffect.h" +#include <cstdlib> +#include <cmath> //====================================================================== // // Gradient effects // //====================================================================== QPixmap& OGfxEffect::gradient(QPixmap &pixmap, const QColor &ca, const QColor &cb, GradientType eff, int ncols) { QImage image = gradient(pixmap.size(), ca, cb, eff, ncols); pixmap.convertFromImage(image); return pixmap; } QImage OGfxEffect::gradient(const QSize &size, const QColor &ca, const QColor &cb, GradientType eff, int /*ncols*/) { int rDiff, gDiff, bDiff; int rca, gca, bca, rcb, gcb, bcb; QImage image(size, 32); if (size.width() == 0 || size.height() == 0) { qDebug ( "WARNING: OGfxEffect::gradient: invalid image" ); return image; } register int x, y; rDiff = (rcb = cb.red()) - (rca = ca.red()); gDiff = (gcb = cb.green()) - (gca = ca.green()); bDiff = (bcb = cb.blue()) - (bca = ca.blue()); if( eff == VerticalGradient || eff == HorizontalGradient ){ uint *p; uint rgb; register int rl = rca << 16; register int gl = gca << 16; register int bl = bca << 16; if( eff == VerticalGradient ) { int rcdelta = ((1<<16) / size.height()) * rDiff; int gcdelta = ((1<<16) / size.height()) * gDiff; int bcdelta = ((1<<16) / size.height()) * bDiff; for ( y = 0; y < size.height(); y++ ) { p = (uint *) image.scanLine(y); rl += rcdelta; gl += gcdelta; bl += bcdelta; rgb = qRgb( (rl>>16), (gl>>16), (bl>>16) ); for( x = 0; x < size.width(); x++ ) { *p = rgb; p++; } } } else { // must be HorizontalGradient unsigned int *o_src = (unsigned int *)image.scanLine(0); unsigned int *src = o_src; int rcdelta = ((1<<16) / size.width()) * rDiff; int gcdelta = ((1<<16) / size.width()) * gDiff; int bcdelta = ((1<<16) / size.width()) * bDiff; for( x = 0; x < size.width(); x++) { rl += rcdelta; gl += gcdelta; bl += bcdelta; *src++ = qRgb( (rl>>16), (gl>>16), (bl>>16)); } src = o_src; // Believe it or not, manually copying in a for loop is faster // than calling memcpy for each scanline (on the order of ms...). // I think this is due to the function call overhead (mosfet). for (y = 1; y < size.height(); ++y) { p = (unsigned int *)image.scanLine(y); src = o_src; for(x=0; x < size.width(); ++x) *p++ = *src++; } } } else { float rfd, gfd, bfd; float rd = rca, gd = gca, bd = bca; unsigned char *xtable[3]; unsigned char *ytable[3]; unsigned int w = size.width(), h = size.height(); xtable[0] = new unsigned char[w]; xtable[1] = new unsigned char[w]; xtable[2] = new unsigned char[w]; ytable[0] = new unsigned char[h]; ytable[1] = new unsigned char[h]; ytable[2] = new unsigned char[h]; w*=2, h*=2; if ( eff == DiagonalGradient || eff == CrossDiagonalGradient) { // Diagonal dgradient code inspired by BlackBox (mosfet) // BlackBox dgradient is (C) Brad Hughes, <bhughes@tcac.net> and // Mike Cole <mike@mydot.com>. rfd = (float)rDiff/w; gfd = (float)gDiff/w; bfd = (float)bDiff/w; int dir; for (x = 0; x < size.width(); x++, rd+=rfd, gd+=gfd, bd+=bfd) { dir = eff == DiagonalGradient? x : size.width() - x - 1; xtable[0][dir] = (unsigned char) rd; xtable[1][dir] = (unsigned char) gd; xtable[2][dir] = (unsigned char) bd; } rfd = (float)rDiff/h; gfd = (float)gDiff/h; bfd = (float)bDiff/h; rd = gd = bd = 0; for (y = 0; y < size.height(); y++, rd+=rfd, gd+=gfd, bd+=bfd) { ytable[0][y] = (unsigned char) rd; ytable[1][y] = (unsigned char) gd; ytable[2][y] = (unsigned char) bd; } for (y = 0; y < size.height(); y++) { unsigned int *scanline = (unsigned int *)image.scanLine(y); for (x = 0; x < size.width(); x++) { scanline[x] = qRgb(xtable[0][x] + ytable[0][y], xtable[1][x] + ytable[1][y], xtable[2][x] + ytable[2][y]); } } } else if (eff == RectangleGradient || eff == PyramidGradient || eff == PipeCrossGradient || eff == EllipticGradient) { int rSign = rDiff>0? 1: -1; int gSign = gDiff>0? 1: -1; int bSign = bDiff>0? 1: -1; rfd = (float)rDiff / size.width(); gfd = (float)gDiff / size.width(); bfd = (float)bDiff / size.width(); rd = (float)rDiff/2; gd = (float)gDiff/2; bd = (float)bDiff/2; for (x = 0; x < size.width(); x++, rd-=rfd, gd-=gfd, bd-=bfd) { xtable[0][x] = (unsigned char) abs((int)rd); xtable[1][x] = (unsigned char) abs((int)gd); xtable[2][x] = (unsigned char) abs((int)bd); } rfd = (float)rDiff/size.height(); gfd = (float)gDiff/size.height(); bfd = (float)bDiff/size.height(); rd = (float)rDiff/2; gd = (float)gDiff/2; bd = (float)bDiff/2; for (y = 0; y < size.height(); y++, rd-=rfd, gd-=gfd, bd-=bfd) { ytable[0][y] = (unsigned char) abs((int)rd); ytable[1][y] = (unsigned char) abs((int)gd); ytable[2][y] = (unsigned char) abs((int)bd); } |