crop.h File Reference

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Functions
QImage *	cropImage (QString filename, QPoint topLeft, QPoint bottomRight)

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Function Documentation

QImage* cropImage (  QString  filename, QPoint  topLeft, QPoint  bottomRight )

Definition at line 36 of file crop.cpp. References bottomRight, and topLeft. Referenced by EditingInterface::crop(). { //load original image QImage origImage( filename ); //convert to 32-bit depth if necessary if( origImage.depth() < 32 ) { origImage = origImage.convertDepth( 32, Qt::AutoColor ); } //construct cropped image QImage* croppedImage = new QImage(bottomRight.x() - topLeft.x() + 1, bottomRight.y() - topLeft.y() + 1, origImage.depth()); //iterate over each selected scanline int xOrig, yOrig; int xCropped, yCropped; uchar *origScanLine, *croppedScanLine; for( yOrig=topLeft.y(),yCropped=0; yOrig<=bottomRight.y(); yOrig++, yCropped++) { //iterate over each selected pixel in scanline origScanLine = origImage.scanLine(yOrig); croppedScanLine = croppedImage->scanLine(yCropped); for( xOrig=topLeft.x(),xCropped=0; xOrig<=bottomRight.x(); xOrig++,xCropped++) { //copy pixel color from original image to cropped image *((QRgb*)croppedScanLine+xCropped) = *((QRgb*)origScanLine+xOrig); } } //return pointer to cropped image return croppedImage; }

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