code: private int calculateShadowWidth() {
  		float mShadowRadius = isShadowResponsiveEffectEnabled() ?
  				((ShadowResponsiveDrawer) shadowResponsiveDrawer).getMaxShadowRadius() : getShadowRadius();
  		int shadowWidth = hasShadow() ? (int) ((mShadowRadius	+ Math.abs(getShadowXOffset())) * 2) : 0;
  		LOGGER.trace("Calculated Action Button shadow width: {}", shadowWidth);
  		return shadowWidth;
  	}
docs: Calculates shadow width in actual pixels
  
  @return shadow width in actual pixels