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	for ( int y=0; y<DpScreen.height(); y++ ) 
	{ 	   
		for (int x=0; x<DpScreen.width(); x++ )
			{
				int pixel = DpScreen.pixel(x, y);
//				cout <<"Pixel des Bildes:" "Position Y:"<<y<<"PostionX:"<<x<<pixel <<endl;
				int red = qRed(pixel);
				int green = qGreen(pixel);
				int blue = qBlue(pixel);

Code: Alles auswählen

	if(green > 2)
					{
						green = 1;
//						
						DpScreen.setPixel(x, y, qRgb(red, green, blue)); 		
					}

Code: Alles auswählen

void Interface::populateFilter(QComboBox *comboBox)
{
    QPixmap pix(22, 22);
    
    QStringList colorNames = QColor::colorNames();
    comboBox->addItem(tr("Select a filter.."));
    pix.fill(QColor("grey"));
    comboBox->addItem(pix,tr("GreyScale"));
    comboBox->addItem(tr("RGB Swapped"));
    comboBox->addItem(tr("InvertPixels color"));
    pix.fill(QColor(162,128,101));
    comboBox->addItem(pix,tr("Colorize")+QString(" color="sepia""));
    comboBox->addItem(tr("Colorize")+QString(" color="mycolor""));
    
    foreach (QString name, colorNames) {  
         
         pix.fill(QColor(name));
        comboBox->addItem(pix,tr("Colorize")+QString(" color="%1"").arg(name));
    }
}

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void Interface::applyFilter( QString filtername )
{
      QImage income(origImageFilename); 
      QImage base = income.convertToFormat(QImage::Format_RGB32);
      int newlarge = (original.width()/cento)*ratio;
      int largeful = base.width();
      QPixmap result;
      if (base.isNull()) {
      return;
      }
      if (filtername == tr("Select a filter..")) {
      //////qDebug() << "### return " << filtername;
      return;
      }
      QColor gtr;
      comboBox_2->setCurrentIndex(0);
    QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));

      qDebug() << "### filtername " << filtername;
      
      /* start to pray filter */
      if (filtername.contains(tr("Colorize"))) {
          const QString colorn = BraketName(filtername);
          
           if (colorn == "sepia") {
           gtr = QColor(162,128,101);
           } else if (colorn == "mycolor") {
           QApplication::restoreOverrideCursor(); 
           QColor col = QColorDialog::getColor(QColor("red"), this);
            QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
           gtr = col;
           } else {
           gtr = QColor(colorn);
           }
          ///////////qDebug() << "### colorn " << colorn;
          int sepiaH, sepiaS, sepiaL;
          ///////QColor(162,128,101).getHsv( &sepiaH, &sepiaS, &sepiaL );
          gtr.getHsv( &sepiaH, &sepiaS, &sepiaL );
          //iterate over each selected scanline 
          int x, y, pixelLuminance;
          QRgb* rgb;
          QColor sepiaColor;
          uchar* scanLine;
    
    
          for( y=0; y<base.height(); y++)  {   
            scanLine = base.scanLine(y);
            for( x=0; x<base.width(); x++)
            {
              rgb = ((QRgb*)scanLine+x);
              pixelLuminance = (int) (0.2125*qRed(*rgb) + 0.7154*qGreen(*rgb) + 0.0721*qBlue(*rgb));
              sepiaColor.setHsv( sepiaH, sepiaS, pixelLuminance );      
              *rgb = sepiaColor.rgb();
            }
          }
          qDebug() << "### base.isNull() 1111  must see false!  " << base.isNull();
          result = QPixmap::fromImage(base);   
                
      } else if (filtername == tr("GreyScale")) {
          
          
          
          result = QPixmap::fromImage(GreyScale(base));
          
          
      } else if (filtername == tr("RGB Swapped")) {
          
               base.rgbSwapped();
               result = QPixmap::fromImage(base);

      } else if (filtername == tr("InvertPixels color")) {
          
               base.invertPixels();
               result = QPixmap::fromImage(base);
          
      } else {
          
          
       return;
      }
      
      original = result;
      
      qDebug() << "### base.isNull() 333  must see false!  " << result.isNull();
      
      
      display = result.scaledToWidth(newlarge,Qt::FastTransformation);
      wrapper->paint(display);
      UpdateNow();
    
    QApplication::restoreOverrideCursor();
      

 
                
}


extern inline  QImage GreyScale( QImage income )
{
    
    QImage base =  income.convertToFormat(QImage::Format_RGB32);
    for (int y = 0; y < base.height(); ++y) {
             for (int x = 0; x < base.width(); ++x) {
                 int pixel = base.pixel(x, y);
                 int gray = qGray(pixel);
                 int alpha = qAlpha(pixel);
                 base.setPixel(x, y, qRgba(gray, gray, gray, alpha));
             }
         }
         
    return base;
}

/* die color name wieder raus holen ... kann man ja auch in qvariant den color setzen ....*/
extern inline QString BraketName( QString braket )
{
    QString name = braket;
    QRegExp expression( "color=["\'](.*)["\']", Qt::CaseInsensitive );
    
    int iPosition = 0;
    while( (iPosition = expression.indexIn( braket , iPosition )) != -1 ) {
        name = expression.cap( 1 );
        iPosition += expression.matchedLength();
    }
return name;
}