#include "KmTypes.h"#include "Background.h"#include "Preferences.h"#include <qimage.h>#include <qpixmap.h>Background::Background(){}Background::~Background() {}bool Background::load(const QString &file, short width, short height) {   w=width;  h=height;   if (file == filename) {	return true;  }  sourceImage = new QImage();  backgroundImage = new QImage();  backgroundPixmap = new QPixmap();  backgroundShadowPixmap = new QPixmap();  // try to load the image, return on failure   if(!sourceImage->load(file ))    return false;  // Just in case the image is loaded 8 bit  if (sourceImage->depth() != 32)    *sourceImage = sourceImage->convertDepth(32);    // call out to scale/tile the source image into the background image  sourceToBackground();  filename = file;	   return true;}// slot used when tile/scale option changesvoid Background::scaleModeChanged(void) {	sourceToBackground();}void Background::sizeChanged(int newW, int newH) {	if (newW == w && newH == h)		return;	w = newW;	h = newH;	sourceToBackground();}void Background::sourceToBackground(void) {  // Deallocate the old image and create the new one  if (!backgroundImage->isNull())    backgroundImage->reset();  // the new version of kmahjongg uses true color images  // to avoid the old color limitation.  backgroundImage->create(w, h, 32);  // Now we decide if we should scale the incomming image  // or if we tile. First we check for an exact match which  // should be true for all images created specifically for us.  if ((sourceImage->width() == w) && (sourceImage->height() == h)) {    *backgroundImage = *sourceImage;    return;  }      if (!preferences.scaleMode()) {    // copy new to background wrapping on w and height    for (int y=0; y<backgroundImage->height(); y++) {      QRgb *dest = (QRgb *) backgroundImage->scanLine(y);      QRgb *src = (QRgb *) sourceImage->scanLine(y % sourceImage->height());      for (int x=0; x< backgroundImage->width(); x++) {	*dest = *(src + (x % sourceImage->width()));	dest++;      }    }  } else {    *backgroundImage = sourceImage->smoothScale(w, h);    // Just incase the image is loaded 8 bit    if (backgroundImage->depth() != 32)      *backgroundImage = backgroundImage->convertDepth(32);  }  // Save a copy of the background as a pixmap for easy and quick  // blitting.  backgroundPixmap->convertFromImage(*backgroundImage);  QImage tmp;  tmp.create(backgroundImage->width(), backgroundImage->height(), 32);  for (int ys=0; ys < tmp.height(); ys++) {	QRgb *src = (QRgb *) backgroundImage->scanLine(ys);	QRgb *dst = (QRgb *) tmp.scanLine(ys);	for (int xs=0; xs < tmp.width(); xs++) {		*dst=QColor(*src).dark(133).rgb();		src++;		dst++;	}  }	  backgroundShadowPixmap->convertFromImage(tmp);  return;}