The paintevent that sets background bitmap and draws the needle takes ~220 ms to execute on my laptop.

How I can I optimize the paintevent and make it faster to execute?

Qt Code: 
  1. QPixmap Meter::setBitmap()
  2. {
  3.  
  4. 	QPixmap* pixmap;
  5.  
  6. 	if(mReset)
  7. 	{
  8.  
  9. 		mReset = false;
  10. 		pixmap = & pixmap1;
  11.  
  12. 	}
  13. 	else
  14. 	{
  15.  
  16. 		if(mStatus == true)
  17. 		{
  18.  
  19. 			pixmap =  & pixmap2;
  20.  
  21. 		}
  22. 		else if(mStatus == false )
  23. 		{
  24.  
  25. 			if( mFinalTorque <= mTorque)
  26. 			{
  27.  
  28. 				pixmap =  & pixmap3;
  29.  
  30. 			}
  31. 			else
  32. 			{
  33.  
  34. 				pixmap =  & pixmap4;
  35.  
  36. 			}
  37.  
  38. 		}
  39.  
  40. 	}
  41.  
  42. 	return *pixmap;
  43.  
  44. }
  45.  
  46. void Meter::paintEvent(QPaintEvent* pe)
  47. {
  48. 	struct timeval tv1,tv2;
  49.  
  50. 	gettimeofday(&tv1, NULL);
  51.  
  52. 	myPaintEvent(pe);
  53.  
  54. 	gettimeofday(&tv2, NULL);
  55.  
  56. 	qDebug() << "Meter::paintEvent: " << (tv2.tv_sec-tv1.tv_sec)*1000000+(tv2.tv_usec-tv1.tv_usec) << "us";
  57. }
  58.  
  59. void Meter::myPaintEvent(QPaintEvent*)
  60. {
  61.  
  62.     QPainter paintNeedle(this);
  63.     QColor needleColor(255, 230, 0);
  64.  
  65.     paintNeedle.setBackgroundMode (Qt::TransparentMode);
  66.     paintNeedle.drawPixmap(mPixmapXCoord, mPixmapYCoord, setBitmap());
  67.  
  68.     paintNeedle.translate(mVectorTranslationX, mVectorTranslationY);
  69.  
  70.     paintNeedle.setPen(Qt::NoPen);
  71.     paintNeedle.setBrush(needleColor);
  72.  
  73.     paintNeedle.save();
  74.     paintNeedle.rotate(mFinalPoint);
  75.     paintNeedle.drawConvexPolygon(needle, 3);
  76.     paintNeedle.restore();
  77.  
  78.     paintNeedle.setPen(needleColor);
  79.  
  80.     QRect rect(mEllipseX, mEllipseY, mEllipseWidht, mEllipseHeight);
  81.     paintNeedle.drawEllipse(rect);
  82.  
  83. }
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