1 files changed, 25 insertions, 51 deletions

diff --git a/libopie2/opieui/oimageeffect.cpp b/libopie2/opieui/oimageeffect.cpp
index 3c28bbe..2855da6 100644
--- a/libopie2/opieui/oimageeffect.cpp
+++ b/libopie2/opieui/oimageeffect.cpp
@@ -19,99 +19,97 @@ IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 */
 
 // $Id$
 
 #include <math.h>
 
 #include <qimage.h>
 #include <stdlib.h>
 #include <iostream>
 
 #include "oimageeffect.h"
 
 #define MaxRGB 255L
 #define DegreesToRadians(x) ((x)*M_PI/180.0)
 
 using namespace std;
 
 inline unsigned int intensityValue(unsigned int color)
 {
     return((unsigned int)((0.299*qRed(color) +
                            0.587*qGreen(color) +
                            0.1140000000000001*qBlue(color))));
 }
 
 //======================================================================
 //
 // Gradient effects
 //
 //======================================================================
 
 QImage OImageEffect::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) {
-#ifndef NDEBUG
-      cerr << "WARNING: OImageEffect::gradient: invalid image" << endl;
-#endif
+      qDebug( "WARNING: OImageEffect::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;
@@ -307,99 +305,97 @@ QImage OImageEffect::gradient(const QSize &size, const QColor &ca,
     return image;
 }
 
 
 // -----------------------------------------------------------------------------
 
 //CT this was (before Dirk A. Mueller's speedup changes)
 //   merely the same code as in the above method, but it's supposedly
 //   way less performant since it introduces a lot of supplementary tests
 //   and simple math operations for the calculus of the balance.
 //      (surprizingly, it isn't less performant, in the contrary :-)
 //   Yes, I could have merged them, but then the excellent performance of
 //   the balanced code would suffer with no other gain than a mere
 //   source code and byte code size economy.
 
 QImage OImageEffect::unbalancedGradient(const QSize &size, const QColor &ca,
         const QColor &cb, GradientType eff, int xfactor, int yfactor,
         int ncols)
 {
     int dir; // general parameter used for direction switches
 
     bool _xanti = false , _yanti = false;
 
     if (xfactor < 0) _xanti = true; // negative on X direction
     if (yfactor < 0) _yanti = true; // negative on Y direction
 
     xfactor = abs(xfactor);
     yfactor = abs(yfactor);
 
     if (!xfactor) xfactor = 1;
     if (!yfactor) yfactor = 1;
 
     if (xfactor > 200 ) xfactor = 200;
     if (yfactor > 200 ) yfactor = 200;
 
 
     //    float xbal = xfactor/5000.;
     //    float ybal = yfactor/5000.;
     float xbal = xfactor/30./size.width();
     float ybal = yfactor/30./size.height();
     float rat;
 
     int rDiff, gDiff, bDiff;
     int rca, gca, bca, rcb, gcb, bcb;
 
     QImage image(size, 32);
 
     if (size.width() == 0 || size.height() == 0) {
-#ifndef NDEBUG
-      cerr << "WARNING: OImageEffect::unbalancedGradient : invalid image\n";
-#endif
+      qDebug( "WARNING: OImageEffect::unbalancedGradient : invalid image" );
       return image;
     }
 
     register int x, y;
     unsigned int *scanline;
 
     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){
         QColor cRow;
 
         uint *p;
         uint rgbRow;
 
         if( eff == VerticalGradient) {
           for ( y = 0; y < size.height(); y++ ) {
             dir = _yanti ? y : size.height() - 1 - y;
             p = (uint *) image.scanLine(dir);
             rat =  1 - exp( - (float)y  * ybal );
 
             cRow.setRgb( rcb - (int) ( rDiff * rat ),
                          gcb - (int) ( gDiff * rat ),
                          bcb - (int) ( bDiff * rat ) );
 
             rgbRow = cRow.rgb();
 
             for( x = 0; x < size.width(); x++ ) {
               *p = rgbRow;
               p++;
             }
           }
         }
         else {
 
           unsigned int *src = (unsigned int *)image.scanLine(0);
           for(x = 0; x < size.width(); x++ )
             {
               dir = _xanti ? x : size.width() - 1 - x;
               rat = 1 - exp( - (float)x  * xbal );
 
               src[dir] = qRgb(rcb - (int) ( rDiff * rat ),
                             gcb - (int) ( gDiff * rat ),
                             bcb - (int) ( bDiff * rat ));
             }
 
           // Believe it or not, manually copying in a for loop is faster
@@ -528,259 +524,253 @@ QImage OImageEffect::unbalancedGradient(const QSize &size, const QColor &ca,
                   }
               }
           }
       }
 
       if (ncols && (QPixmap::defaultDepth() < 15 )) {
           if ( ncols < 2 || ncols > 256 )
               ncols = 3;
           QColor *dPal = new QColor[ncols];
           for (int i=0; i<ncols; i++) {
               dPal[i].setRgb ( rca + rDiff * i / ( ncols - 1 ),
                                gca + gDiff * i / ( ncols - 1 ),
                                bca + bDiff * i / ( ncols - 1 ) );
           }
           dither(image, dPal, ncols);
           delete [] dPal;
       }
 
       delete [] xtable[0];
       delete [] xtable[1];
       delete [] xtable[2];
       delete [] ytable[0];
       delete [] ytable[1];
       delete [] ytable[2];
 
     }
 
     return image;
 }
 
 
 //======================================================================
 //
 // Intensity effects
 //
 //======================================================================
 
 
 /* This builds a 256 byte unsigned char lookup table with all
  * the possible percent values prior to applying the effect, then uses
  * integer math for the pixels. For any image larger than 9x9 this will be
  * less expensive than doing a float operation on the 3 color components of
  * each pixel. (mosfet)
  */
 
 QImage& OImageEffect::intensity(QImage &image, float percent)
 {
     if (image.width() == 0 || image.height() == 0) {
-#ifndef NDEBUG
-      cerr << "WARNING: OImageEffect::intensity : invalid image\n";
-#endif
+      qDebug( "WARNING: OImageEffect::intensity : invalid image" );
       return image;
     }
 
     int segColors = image.depth() > 8 ? 256 : image.numColors();
     unsigned char *segTbl = new unsigned char[segColors];
     int pixels = image.depth() > 8 ? image.width()*image.height() :
         image.numColors();
     unsigned int *data = image.depth() > 8 ? (unsigned int *)image.bits() :
         (unsigned int *)image.colorTable();
 
     bool brighten = (percent >= 0);
     if(percent < 0)
         percent = -percent;
 
     if(brighten){ // keep overflow check out of loops
         for(int i=0; i < segColors; ++i){
             int tmp = (int)(i*percent);
             if(tmp > 255)
                 tmp = 255;
             segTbl[i] = tmp;
         }
     }
     else{
         for(int i=0; i < segColors; ++i){
             int tmp = (int)(i*percent);
             if(tmp < 0)
                 tmp = 0;
             segTbl[i] = tmp;
         }
     }
 
     if(brighten){ // same here
         for(int i=0; i < pixels; ++i){
             int r = qRed(data[i]);
             int g = qGreen(data[i]);
             int b = qBlue(data[i]);
             int a = qAlpha(data[i]);
             r = r + segTbl[r] > 255 ? 255 : r + segTbl[r];
             g = g + segTbl[g] > 255 ? 255 : g + segTbl[g];
             b = b + segTbl[b] > 255 ? 255 : b + segTbl[b];
             data[i] = qRgba(r, g, b,a);
         }
     }
     else{
         for(int i=0; i < pixels; ++i){
             int r = qRed(data[i]);
             int g = qGreen(data[i]);
             int b = qBlue(data[i]);
             int a = qAlpha(data[i]);
             r = r - segTbl[r] < 0 ? 0 : r - segTbl[r];
             g = g - segTbl[g] < 0 ? 0 : g - segTbl[g];
             b = b - segTbl[b] < 0 ? 0 : b - segTbl[b];
             data[i] = qRgba(r, g, b, a);
         }
     }
     delete [] segTbl;
 
     return image;
 }
 
 QImage& OImageEffect::channelIntensity(QImage &image, float percent,
                                        RGBComponent channel)
 {
     if (image.width() == 0 || image.height() == 0) {
-#ifndef NDEBUG
-      cerr << "WARNING: OImageEffect::channelIntensity : invalid image\n";
-#endif
+      qDebug( "WARNING: OImageEffect::channelIntensity : invalid image" );
       return image;
     }
 
     int segColors = image.depth() > 8 ? 256 : image.numColors();
     unsigned char *segTbl = new unsigned char[segColors];
     int pixels = image.depth() > 8 ? image.width()*image.height() :
         image.numColors();
     unsigned int *data = image.depth() > 8 ? (unsigned int *)image.bits() :
         (unsigned int *)image.colorTable();
     bool brighten = (percent >= 0);
     if(percent < 0)
         percent = -percent;
 
     if(brighten){ // keep overflow check out of loops
         for(int i=0; i < segColors; ++i){
             int tmp = (int)(i*percent);
             if(tmp > 255)
                 tmp = 255;
             segTbl[i] = tmp;
         }
     }
     else{
         for(int i=0; i < segColors; ++i){
             int tmp = (int)(i*percent);
             if(tmp < 0)
                 tmp = 0;
             segTbl[i] = tmp;
         }
     }
 
     if(brighten){ // same here
         if(channel == Red){ // and here ;-)
             for(int i=0; i < pixels; ++i){
                 int c = qRed(data[i]);
                 c = c + segTbl[c] > 255 ? 255 : c + segTbl[c];
                 data[i] = qRgba(c, qGreen(data[i]), qBlue(data[i]), qAlpha(data[i]));
             }
         }
         if(channel == Green){
             for(int i=0; i < pixels; ++i){
                 int c = qGreen(data[i]);
                 c = c + segTbl[c] > 255 ? 255 : c + segTbl[c];
                 data[i] = qRgba(qRed(data[i]), c, qBlue(data[i]), qAlpha(data[i]));
             }
         }
         else{
             for(int i=0; i < pixels; ++i){
                 int c = qBlue(data[i]);
                 c = c + segTbl[c] > 255 ? 255 : c + segTbl[c];
                 data[i] = qRgba(qRed(data[i]), qGreen(data[i]), c, qAlpha(data[i]));
             }
         }
 
     }
     else{
         if(channel == Red){
             for(int i=0; i < pixels; ++i){
                 int c = qRed(data[i]);
                 c = c - segTbl[c] < 0 ? 0 : c - segTbl[c];
                 data[i] = qRgba(c, qGreen(data[i]), qBlue(data[i]), qAlpha(data[i]));
             }
         }
         if(channel == Green){
             for(int i=0; i < pixels; ++i){
                 int c = qGreen(data[i]);
                 c = c - segTbl[c] < 0 ? 0 : c - segTbl[c];
                 data[i] = qRgba(qRed(data[i]), c, qBlue(data[i]), qAlpha(data[i]));
             }
         }
         else{
             for(int i=0; i < pixels; ++i){
                 int c = qBlue(data[i]);
                 c = c - segTbl[c] < 0 ? 0 : c - segTbl[c];
                 data[i] = qRgba(qRed(data[i]), qGreen(data[i]), c, qAlpha(data[i]));
             }
         }
     }
     delete [] segTbl;
 
     return image;
 }
 
 // Modulate an image with an RBG channel of another image
 //
 QImage& OImageEffect::modulate(QImage &image, QImage &modImage, bool reverse,
         ModulationType type, int factor, RGBComponent channel)
 {
     if (image.width() == 0 || image.height() == 0 ||
         modImage.width() == 0 || modImage.height() == 0) {
-#ifndef NDEBUG
-      cerr << "WARNING: OImageEffect::modulate : invalid image\n";
-#endif
-      return image;
+          qDebug( "WARNING: OImageEffect::modulate : invalid image" );
+          return image;
     }
 
     int r, g, b, h, s, v, a;
     QColor clr;
     int mod=0;
     unsigned int x1, x2, y1, y2;
     register int x, y;
 
     // for image, we handle only depth 32
     if (image.depth()<32) image = image.convertDepth(32);
 
     // for modImage, we handle depth 8 and 32
     if (modImage.depth()<8) modImage = modImage.convertDepth(8);
 
     unsigned int *colorTable2 = (modImage.depth()==8) ?
                                  modImage.colorTable():0;
     unsigned int *data1, *data2;
     unsigned char *data2b;
     unsigned int color1, color2;
 
     x1 = image.width();    y1 = image.height();
     x2 = modImage.width(); y2 = modImage.height();
 
     for (y = 0; y < (int)y1; y++) {
         data1 =  (unsigned int *) image.scanLine(y);
         data2 =  (unsigned int *) modImage.scanLine( y%y2 );
         data2b = (unsigned char *) modImage.scanLine( y%y2 );
 
         x=0;
         while(x < (int)x1) {
           color2 = (colorTable2) ? colorTable2[*data2b] : *data2;
           if (reverse) {
               color1 = color2;
               color2 = *data1;
           }
           else
               color1 = *data1;
 
           if (type == Intensity || type == Contrast) {
               r = qRed(color1);
               g = qGreen(color1);
               b = qBlue(color1);
               if (channel != All) {
                       mod = (channel == Red) ? qRed(color2) :
                     (channel == Green) ? qGreen(color2) :
                         (channel == Blue) ? qBlue(color2) :
                     (channel == Gray) ? qGray(color2) : 0;
                 mod = mod*factor/50;
@@ -815,197 +805,189 @@ QImage& OImageEffect::modulate(QImage &image, QImage &modImage, bool reverse,
               if (g<0) g=0; if (g>255) g=255;
               if (b<0) b=0; if (b>255) b=255;
               a = qAlpha(*data1);
               *data1 = qRgba(r, g, b, a);
           }
           else if (type == Saturation || type == HueShift) {
               clr.setRgb(color1);
               clr.hsv(&h, &s, &v);
                     mod = (channel == Red) ? qRed(color2) :
                     (channel == Green) ? qGreen(color2) :
                         (channel == Blue) ? qBlue(color2) :
                     (channel == Gray) ? qGray(color2) : 0;
               mod = mod*factor/50;
 
               if (type == Saturation) {
                   s -= s * mod/256;
                   if (s<0) s=0; if (s>255) s=255;
               }
               else { // HueShift
                 h += mod;
                 while(h<0) h+=360;
                 h %= 360;
               }
 
               clr.setHsv(h, s, v);
               a = qAlpha(*data1);
               *data1 = clr.rgb() | ((uint)(a & 0xff) << 24);
           }
           data1++; data2++; data2b++; x++;
           if ( (x%x2) ==0) { data2 -= x2; data2b -= x2; }
         }
     }
     return image;
 }
 
 
 
 //======================================================================
 //
 // Blend effects
 //
 //======================================================================
 
 
 // Nice and fast direct pixel manipulation
 QImage& OImageEffect::blend(const QColor& clr, QImage& dst, float opacity)
 {
     if (dst.width() <= 0 || dst.height() <= 0)
-        return dst;
+        return dst;
 
     if (opacity < 0.0 || opacity > 1.0) {
-#ifndef NDEBUG
-        cerr << "WARNING: OImageEffect::blend : invalid opacity. Range [0, 1]\n";
-#endif
-        return dst;
+        qDebug( "WARNING: OImageEffect::blend : invalid opacity. Range [0, 1] ");
+        return dst;
     }
 
     int depth = dst.depth();
     if (depth != 32)
-        dst = dst.convertDepth(32);
+        dst = dst.convertDepth(32);
 
     int pixels = dst.width() * dst.height();
     int rcol, gcol, bcol;
     clr.rgb(&rcol, &gcol, &bcol);
 
 #ifdef WORDS_BIGENDIAN   // ARGB (skip alpha)
     register unsigned char *data = (unsigned char *)dst.bits() + 1;
 #else                    // BGRA
     register unsigned char *data = (unsigned char *)dst.bits();
 #endif
 
     for (register int i=0; i<pixels; i++)
     {
 #ifdef WORDS_BIGENDIAN
         *(data++) += (unsigned char)((rcol - *data) * opacity);
         *(data++) += (unsigned char)((gcol - *data) * opacity);
         *(data++) += (unsigned char)((bcol - *data) * opacity);
 #else
         *(data++) += (unsigned char)((bcol - *data) * opacity);
         *(data++) += (unsigned char)((gcol - *data) * opacity);
         *(data++) += (unsigned char)((rcol - *data) * opacity);
 #endif
         data++; // skip alpha
     }
     return dst;
 }
 
 // Nice and fast direct pixel manipulation
 QImage& OImageEffect::blend(QImage& src, QImage& dst, float opacity)
 {
     if (src.width() <= 0 || src.height() <= 0)
-        return dst;
+        return dst;
     if (dst.width() <= 0 || dst.height() <= 0)
-        return dst;
+        return dst;
 
     if (src.width() != dst.width() || src.height() != dst.height()) {
-#ifndef NDEBUG
-        cerr << "WARNING: OImageEffect::blend : src and destination images are not the same size\n";
-#endif
-        return dst;
+        qDebug( "WARNING: OImageEffect::blend : src and destination images are not the same size" );
+        return dst;
     }
 
     if (opacity < 0.0 || opacity > 1.0) {
-#ifndef NDEBUG
-        cerr << "WARNING: OImageEffect::blend : invalid opacity. Range [0, 1]\n";
-#endif
-        return dst;
+        qDebug( "WARNING: OImageEffect::blend : invalid opacity. Range [0, 1]" );
+        return dst;
     }
 
     if (src.depth() != 32) src = src.convertDepth(32);
     if (dst.depth() != 32) dst = dst.convertDepth(32);
 
     int pixels = src.width() * src.height();
 #ifdef WORDS_BIGENDIAN   // ARGB (skip alpha)
     register unsigned char *data1 = (unsigned char *)dst.bits() + 1;
     register unsigned char *data2 = (unsigned char *)src.bits() + 1;
 #else                    // BGRA
     register unsigned char *data1 = (unsigned char *)dst.bits();
     register unsigned char *data2 = (unsigned char *)src.bits();
 #endif
 
     for (register int i=0; i<pixels; i++)
     {
 #ifdef WORDS_BIGENDIAN
         *(data1++) += (unsigned char)((*(data2++) - *data1) * opacity);
         *(data1++) += (unsigned char)((*(data2++) - *data1) * opacity);
         *(data1++) += (unsigned char)((*(data2++) - *data1) * opacity);
 #else
         *(data1++) += (unsigned char)((*(data2++) - *data1) * opacity);
         *(data1++) += (unsigned char)((*(data2++) - *data1) * opacity);
         *(data1++) += (unsigned char)((*(data2++) - *data1) * opacity);
 #endif
         data1++; // skip alpha
         data2++;
     }
 
     return dst;
 }
 
 
 QImage& OImageEffect::blend(QImage &image, float initial_intensity,
                             const QColor &bgnd, GradientType eff,
                             bool anti_dir)
 {
     if (image.width() == 0 || image.height() == 0 || image.depth()!=32 ) {
-#ifndef NDEBUG
-      cerr << "WARNING: OImageEffect::blend : invalid image\n";
-#endif
-      return image;
+        qDebug( "WARNING: OImageEffect::blend : invalid image" );
+        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();
 
     int image_width = image.width(); //Those can't change
     int image_height = image.height();
 
 
     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));
         }
@@ -1107,232 +1089,226 @@ QImage& OImageEffect::blend(QImage &image, float initial_intensity,
                 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 + sqrt(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);
             }
         }
     }
-#ifndef NDEBUG
-    else cerr << "OImageEffect::blend effect not implemented" << endl;
-#endif
+    else qDebug( "OImageEffect::blend effect not implemented" );
     return image;
 }
 
 // Not very efficient as we create a third big image...
 //
 QImage& OImageEffect::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 = OImageEffect::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
 }
 
 // Blend image2 into image1, using an RBG channel of blendImage
 //
 QImage& OImageEffect::blend(QImage &image1, QImage &image2,
                             QImage &blendImage, RGBComponent channel)
 {
     if (image1.width() == 0 || image1.height() == 0 ||
         image2.width() == 0 || image2.height() == 0 ||
         blendImage.width() == 0 || blendImage.height() == 0) {
-#ifndef NDEBUG
-      cerr << "OImageEffect::blend effect invalid image" << endl;
-#endif
-      return image1;
+            qDebug( "OImageEffect::blend effect invalid image" );
+            return image1;
     }
 
     int r, g, b;
     int ind1, ind2, ind3;
 
     unsigned int x1, x2, x3, y1, y2, y3;
     unsigned int a;
 
     register int x, y;
 
     // for image1 and image2, we only handle depth 32
     if (image1.depth()<32) image1 = image1.convertDepth(32);
     if (image2.depth()<32) image2 = image2.convertDepth(32);
 
     // for blendImage, we handle depth 8 and 32
     if (blendImage.depth()<8) blendImage = blendImage.convertDepth(8);
 
     unsigned int *colorTable3 = (blendImage.depth()==8) ?
                                  blendImage.colorTable():0;
 
     unsigned int *data1 =  (unsigned int *)image1.bits();
     unsigned int *data2 =  (unsigned int *)image2.bits();
     unsigned int *data3   =  (unsigned int *)blendImage.bits();
     unsigned char *data3b =  (unsigned char *)blendImage.bits();
     unsigned int color3;
 
     x1 = image1.width();     y1 = image1.height();
     x2 = image2.width();     y2 = image2.height();
     x3 = blendImage.width(); y3 = blendImage.height();
 
     for (y = 0; y < (int)y1; y++) {
         ind1 = x1*y;
         ind2 = x2*(y%y2);
         ind3 = x3*(y%y3);
 
         x=0;
         while(x < (int)x1) {
           color3 = (colorTable3) ? colorTable3[data3b[ind3]] : data3[ind3];
 
           a = (channel == Red) ? qRed(color3) :
               (channel == Green) ? qGreen(color3) :
               (channel == Blue) ? qBlue(color3) : qGray(color3);
 
           r = (a*qRed(data1[ind1]) + (256-a)*qRed(data2[ind2]))/256;
           g = (a*qGreen(data1[ind1]) + (256-a)*qGreen(data2[ind2]))/256;
           b = (a*qBlue(data1[ind1]) + (256-a)*qBlue(data2[ind2]))/256;
 
           a = qAlpha(data1[ind1]);
           data1[ind1] = qRgba(r, g, b, a);
 
           ind1++; ind2++; ind3++; x++;
           if ( (x%x2) ==0) ind2 -= x2;
           if ( (x%x3) ==0) ind3 -= x3;
         }
     }
     return image1;
 }
 
 
 //======================================================================
 //
 // Hash effects
 //
 //======================================================================
 
 unsigned int OImageEffect::lHash(unsigned int c)
 {
     unsigned char r = qRed(c), g = qGreen(c), b = qBlue(c), a = qAlpha(c);
     unsigned char nr, ng, nb;
     nr =(r >> 1) + (r >> 2); nr = nr > r ? 0 : nr;
     ng =(g >> 1) + (g >> 2); ng = ng > g ? 0 : ng;
     nb =(b >> 1) + (b >> 2); nb = nb > b ? 0 : nb;
 
     return qRgba(nr, ng, nb, a);
 }
 
 
 // -----------------------------------------------------------------------------
 
 unsigned int OImageEffect::uHash(unsigned int c)
 {
     unsigned char r = qRed(c), g = qGreen(c), b = qBlue(c), a = qAlpha(c);
     unsigned char nr, ng, nb;
     nr = r + (r >> 3); nr = nr < r ? ~0 : nr;
     ng = g + (g >> 3); ng = ng < g ? ~0 : ng;
     nb = b + (b >> 3); nb = nb < b ? ~0 : nb;
 
     return qRgba(nr, ng, nb, a);
 }
 
 
 // -----------------------------------------------------------------------------
 
 QImage& OImageEffect::hash(QImage &image, Lighting lite, unsigned int spacing)
 {
     if (image.width() == 0 || image.height() == 0) {
-#ifndef NDEBUG
-      cerr << "OImageEffect::hash effect invalid image" << endl;
-#endif
-      return image;
+        qDebug( "OImageEffect::hash effect invalid image" );
+        return image;
     }
 
     register int x, y;
     unsigned int *data =  (unsigned int *)image.bits();
     unsigned int ind;
 
     //CT no need to do it if not enough space
     if ((lite == NorthLite ||
          lite == SouthLite)&&
         (unsigned)image.height() < 2+spacing) return image;
     if ((lite == EastLite ||
          lite == WestLite)&&
         (unsigned)image.height() < 2+spacing) return image;
 
     if (lite == NorthLite || lite == SouthLite) {
         for (y = 0 ; y < image.height(); y = y + 2 + spacing) {
             for (x = 0; x < image.width(); x++) {
                 ind = x + image.width() * y;
                 data[ind] = lite==NorthLite?uHash(data[ind]):lHash(data[ind]);
 
                 ind = ind + image.width();
                 data[ind] = lite==NorthLite?lHash(data[ind]):uHash(data[ind]);
             }
         }
     }
 
     else if (lite == EastLite || lite == WestLite) {
         for (y = 0 ; y < image.height(); y++) {
             for (x = 0; x < image.width(); x = x + 2 + spacing) {
                 ind = x + image.width() * y;
                 data[ind] = lite==EastLite?uHash(data[ind]):lHash(data[ind]);
 
                 ind++;
                 data[ind] = lite==EastLite?lHash(data[ind]):uHash(data[ind]);
             }
         }
     }
 
     else if (lite == NWLite || lite == SELite) {
         for (y = 0 ; y < image.height(); y++) {
             for (x = 0;
                  x < (int)(image.width() - ((y & 1)? 1 : 0) * spacing);
                  x = x + 2 + spacing) {
                 ind = x + image.width() * y + ((y & 1)? 1 : 0);
                 data[ind] = lite==NWLite?uHash(data[ind]):lHash(data[ind]);
 
                 ind++;
                 data[ind] = lite==NWLite?lHash(data[ind]):uHash(data[ind]);
@@ -1749,100 +1725,98 @@ QImage& OImageEffect::dither(QImage &img, const QColor *palette, int size)
 
     img = dImage;
     return img;
 }
 
 int OImageEffect::nearestColor( int r, int g, int b, const QColor *palette, int size )
 {
     if (palette == 0)
       return 0;
 
     int dr = palette[0].red() - r;
     int dg = palette[0].green() - g;
     int db = palette[0].blue() - b;
 
     int minDist =  dr*dr + dg*dg + db*db;
     int nearest = 0;
 
     for (int i = 1; i < size; i++ )
     {
         dr = palette[i].red() - r;
         dg = palette[i].green() - g;
         db = palette[i].blue() - b;
 
         int dist = dr*dr + dg*dg + db*db;
 
         if ( dist < minDist )
         {
             minDist = dist;
             nearest = i;
         }
     }
 
     return nearest;
 }
 
 bool OImageEffect::blend(
     const QImage & upper,
     const QImage & lower,
     QImage & output
 )
 {
   if (
       upper.width()  > lower.width()  ||
       upper.height() > lower.height() ||
       upper.depth() != 32             ||
       lower.depth() != 32
   )
   {
-#ifndef NDEBUG
-    cerr << "OImageEffect::blend : Sizes not correct\n" ;
-#endif
-    return false;
+      qDebug( "OImageEffect::blend : Sizes not correct" );
+      return false;
   }
 
   output = lower.copy();
 
   register uchar *i, *o;
   register int a;
   register int col;
   register int w = upper.width();
   int row(upper.height() - 1);
 
   do {
 
     i = upper.scanLine(row);
     o = output.scanLine(row);
 
     col = w << 2;
     --col;
 
     do {
 
       while (!(a = i[col]) && (col != 3)) {
         --col; --col; --col; --col;
       }
 
       --col;
       o[col] += ((i[col] - o[col]) * a) >> 8;
 
       --col;
       o[col] += ((i[col] - o[col]) * a) >> 8;
 
       --col;
       o[col] += ((i[col] - o[col]) * a) >> 8;
 
     } while (col--);
 
   } while (row--);
 
   return true;
 }
 
 #if 0
 // Not yet...
 bool OImageEffect::blend(
     const QImage & upper,
     const QImage & lower,
     QImage & output,
     const QRect & destRect
 )