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
@@ -1,507 +1,509 @@
 /* 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);
             }
             unsigned int rgb;
             int h = (size.height()+1)>>1;
             for (y = 0; y < h; y++) {
                 unsigned int *sl1 = (unsigned int *)image.scanLine(y);
                 unsigned int *sl2 = (unsigned int *)image.scanLine(QMAX(size.height()-y-1, y));
 
                 int w = (size.width()+1)>>1;
                 int x2 = size.width()-1;
 
                 for (x = 0; x < w; x++, x2--) {
                     rgb = 0;
                     if (eff == PyramidGradient) {
                         rgb = qRgb(rcb-rSign*(xtable[0][x]+ytable[0][y]),
                                    gcb-gSign*(xtable[1][x]+ytable[1][y]),
                                    bcb-bSign*(xtable[2][x]+ytable[2][y]));
                     }
                     if (eff == RectangleGradient) {
                         rgb = qRgb(rcb - rSign *
                                    QMAX(xtable[0][x], ytable[0][y]) * 2,
                                    gcb - gSign *
                                    QMAX(xtable[1][x], ytable[1][y]) * 2,
                                    bcb - bSign *
                                    QMAX(xtable[2][x], ytable[2][y]) * 2);
                     }
                     if (eff == PipeCrossGradient) {
                         rgb = qRgb(rcb - rSign *
                                    QMIN(xtable[0][x], ytable[0][y]) * 2,
                                    gcb - gSign *
                                    QMIN(xtable[1][x], ytable[1][y]) * 2,
                                    bcb - bSign *
                                    QMIN(xtable[2][x], ytable[2][y]) * 2);
                     }
                     if (eff == EllipticGradient) {
                         rgb = qRgb(rcb - rSign *
                                    (int)sqrt((xtable[0][x]*xtable[0][x] +
                                               ytable[0][y]*ytable[0][y])*2.0),
                                    gcb - gSign *
                                    (int)sqrt((xtable[1][x]*xtable[1][x] +
                                               ytable[1][y]*ytable[1][y])*2.0),
                                    bcb - bSign *
                                    (int)sqrt((xtable[2][x]*xtable[2][x] +
                                               ytable[2][y]*ytable[2][y])*2.0));
                     }
 
                     sl1[x] = sl2[x] = rgb;
                     sl1[x2] = sl2[x2] = rgb;
                 }
             }
         }
 
         delete [] xtable[0];
         delete [] xtable[1];
         delete [] xtable[2];
         delete [] ytable[0];
         delete [] ytable[1];
         delete [] ytable[2];
     }
     return image;
 }
 
 
 //======================================================================
 //
 // Blend effects
 //
 //======================================================================
 
 
 QPixmap& OGfxEffect::blend(QPixmap &pixmap, float initial_intensity,
                           const QColor &bgnd, GradientType eff,
                           bool anti_dir, int /*ncols*/)
 {
     QImage image = pixmap.convertToImage();
     OGfxEffect::blend(image, initial_intensity, bgnd, eff, anti_dir);
 
         if ( pixmap. depth ( ) <= 8 )
                 image. convertDepth ( pixmap. depth ( ));
 
     pixmap.convertFromImage(image);
 
     return pixmap;
 }
 
 
 QImage& OGfxEffect::blend(QImage &image, float initial_intensity,
                             const QColor &bgnd, GradientType eff,
                             bool anti_dir)
 {
     if (image.width() == 0 || image.height() == 0) {
       qDebug ( "Invalid image\n" );
       return image;
     }
 
     int r_bgnd = bgnd.red(), g_bgnd = bgnd.green(), b_bgnd = bgnd.blue();
     int r, g, b;
     int ind;
 
     unsigned int xi, xf, yi, yf;
     unsigned int a;
 
     // check the boundaries of the initial intesity param
     float unaffected = 1;
     if (initial_intensity >  1) initial_intensity =  1;
     if (initial_intensity < -1) initial_intensity = -1;
     if (initial_intensity < 0) {
         unaffected = 1. + initial_intensity;
         initial_intensity = 0;
     }
 
 
     float intensity = initial_intensity;
     float var = 1. - initial_intensity;
 
     if (anti_dir) {
         initial_intensity = intensity = 1.;
         var = -var;
     }
 
     register int x, y;
 
     unsigned int *data =  (unsigned int *)image.bits();
 
     if( eff == VerticalGradient || eff == HorizontalGradient ) {
 
         // set the image domain to apply the effect to
         xi = 0, xf = image.width();
         yi = 0, yf = image.height();
         if (eff == VerticalGradient) {
             if (anti_dir) yf = (int)(image.height() * unaffected);
             else yi = (int)(image.height() * (1 - unaffected));
         }
         else {
             if (anti_dir) xf = (int)(image.width() * unaffected);
             else xi = (int)(image.height() * (1 - unaffected));
         }
 
         var /= (eff == VerticalGradient?yf-yi:xf-xi);
 
         for (y = yi; y < (int)yf; y++) {
             intensity = eff == VerticalGradient? intensity + var :
                 initial_intensity;
             for (x = xi; x < (int)xf ; x++) {
                 if (eff == HorizontalGradient) intensity += var;
                 ind = x + image.width()  * y ;
                 r = qRed  (data[ind]) + (int)(intensity *
                                               (r_bgnd - qRed  (data[ind])));
                 g = qGreen(data[ind]) + (int)(intensity *
                                               (g_bgnd - qGreen(data[ind])));
                 b = qBlue (data[ind]) + (int)(intensity *
                                               (b_bgnd - qBlue (data[ind])));
                 if (r > 255) r = 255; if (r < 0 ) r = 0;
                 if (g > 255) g = 255; if (g < 0 ) g = 0;
                 if (b > 255) b = 255; if (b < 0 ) b = 0;
                 a = qAlpha(data[ind]);
                 data[ind] = qRgba(r, g, b, a);
             }
         }
     }
     else if (eff == DiagonalGradient  || eff == CrossDiagonalGradient) {
         float xvar = var / 2 / image.width();  // / unaffected;
         float yvar = var / 2 / image.height(); // / unaffected;
         float tmp;
 
         for (x = 0; x < image.width() ; x++) {
             tmp =  xvar * (eff == DiagonalGradient? x : image.width()-x-1);
             for (y = 0; y < image.height() ; y++) {
                 intensity = initial_intensity + tmp + yvar * y;
                 ind = x + image.width()  * y ;
                 r = qRed  (data[ind]) + (int)(intensity *
                                               (r_bgnd - qRed  (data[ind])));
                 g = qGreen(data[ind]) + (int)(intensity *
                                               (g_bgnd - qGreen(data[ind])));
                 b = qBlue (data[ind]) + (int)(intensity *
                                               (b_bgnd - qBlue (data[ind])));
                 if (r > 255) r = 255; if (r < 0 ) r = 0;
                 if (g > 255) g = 255; if (g < 0 ) g = 0;
                 if (b > 255) b = 255; if (b < 0 ) b = 0;
                 a = qAlpha(data[ind]);
                 data[ind] = qRgba(r, g, b, a);
             }
         }
     }
 
     else if (eff == RectangleGradient || eff == EllipticGradient) {
         float xvar;
         float yvar;
 
         for (x = 0; x < image.width() / 2 + image.width() % 2; x++) {
             xvar = var / image.width()  * (image.width() - x*2/unaffected-1);
             for (y = 0; y < image.height() / 2 + image.height() % 2; y++) {
                 yvar = var / image.height()   * (image.height() - y*2/unaffected -1);
 
                 if (eff == RectangleGradient)
                     intensity = initial_intensity + QMAX(xvar, yvar);
                 else
                     intensity = initial_intensity + qSqrt(xvar * xvar + yvar * yvar);
                 if (intensity > 1) intensity = 1;
                 if (intensity < 0) intensity = 0;
 
                 //NW
                 ind = x + image.width()  * y ;
                 r = qRed  (data[ind]) + (int)(intensity *
                                               (r_bgnd - qRed  (data[ind])));
                 g = qGreen(data[ind]) + (int)(intensity *
                                               (g_bgnd - qGreen(data[ind])));
                 b = qBlue (data[ind]) + (int)(intensity *
                                               (b_bgnd - qBlue (data[ind])));
                 if (r > 255) r = 255; if (r < 0 ) r = 0;
                 if (g > 255) g = 255; if (g < 0 ) g = 0;
                 if (b > 255) b = 255; if (b < 0 ) b = 0;
                 a = qAlpha(data[ind]);
                 data[ind] = qRgba(r, g, b, a);
 
                 //NE
                 ind = image.width() - x - 1 + image.width()  * y ;
                 r = qRed  (data[ind]) + (int)(intensity *
                                               (r_bgnd - qRed  (data[ind])));
                 g = qGreen(data[ind]) + (int)(intensity *
                                               (g_bgnd - qGreen(data[ind])));
                 b = qBlue (data[ind]) + (int)(intensity *
                                               (b_bgnd - qBlue (data[ind])));
                 if (r > 255) r = 255; if (r < 0 ) r = 0;
                 if (g > 255) g = 255; if (g < 0 ) g = 0;
                 if (b > 255) b = 255; if (b < 0 ) b = 0;
                 a = qAlpha(data[ind]);
                 data[ind] = qRgba(r, g, b, a);
             }
         }
 
         //CT  loop is doubled because of stupid central row/column issue.
         //    other solution?
         for (x = 0; x < image.width() / 2; x++) {
             xvar = var / image.width()  * (image.width() - x*2/unaffected-1);
             for (y = 0; y < image.height() / 2; y++) {
                 yvar = var / image.height()   * (image.height() - y*2/unaffected -1);
 
                 if (eff == RectangleGradient)
                     intensity = initial_intensity + QMAX(xvar, yvar);
                 else
                     intensity = initial_intensity + qSqrt(xvar * xvar + yvar * yvar);
                 if (intensity > 1) intensity = 1;
                 if (intensity < 0) intensity = 0;
 
                 //SW
                 ind = x + image.width()  * (image.height() - y -1) ;
                 r = qRed  (data[ind]) + (int)(intensity *
                                               (r_bgnd - qRed  (data[ind])));
                 g = qGreen(data[ind]) + (int)(intensity *
                                               (g_bgnd - qGreen(data[ind])));
                 b = qBlue (data[ind]) + (int)(intensity *
                                               (b_bgnd - qBlue (data[ind])));
                 if (r > 255) r = 255; if (r < 0 ) r = 0;
                 if (g > 255) g = 255; if (g < 0 ) g = 0;
                 if (b > 255) b = 255; if (b < 0 ) b = 0;
                 a = qAlpha(data[ind]);
                 data[ind] = qRgba(r, g, b, a);
 
                 //SE
                 ind = image.width()-x-1 + image.width() * (image.height() - y - 1) ;
                 r = qRed  (data[ind]) + (int)(intensity *
                                               (r_bgnd - qRed  (data[ind])));
                 g = qGreen(data[ind]) + (int)(intensity *
                                               (g_bgnd - qGreen(data[ind])));
                 b = qBlue (data[ind]) + (int)(intensity *
                                               (b_bgnd - qBlue (data[ind])));
                 if (r > 255) r = 255; if (r < 0 ) r = 0;
                 if (g > 255) g = 255; if (g < 0 ) g = 0;
                 if (b > 255) b = 255; if (b < 0 ) b = 0;
                 a = qAlpha(data[ind]);
                 data[ind] = qRgba(r, g, b, a);
             }
         }
     }
 
     else 
             qDebug ( "not implemented\n" );
 
     return image;
 }
 
 #if 0
 // Not very efficient as we create a third big image...
 //
 QImage& KQGfxEffect::blend(QImage &image1, QImage &image2,
                             GradientType gt, int xf, int yf)
 {
   if (image1.width() == 0 || image1.height() == 0 ||
       image2.width() == 0 || image2.height() == 0)
     return image1;
 
   QImage image3;
 
   image3 = KQGfxEffect::unbalancedGradient(image1.size(),
                                     QColor(0,0,0), QColor(255,255,255),
                                     gt, xf, yf, 0);
 
   return blend(image1,image2,image3, Red); // Channel to use is arbitrary
 }
 #endif