question: protected void drawDimmedLayer ( @ NonNull Canvas canvas ) { canvas . save ( ) ; if ( mCircleDimmedLayer ) { canvas . clipPath ( mCircularPath , Region . Op . DIFFERENCE ) ; } else { canvas . clipRect ( mCropViewRect , Region . Op . DIFFERENCE ) ; } canvas . drawColor ( mDimmedColor ) ; canvas . restore ( ) ; if ( mCircleDimmedLayer ) { canvas . drawCircle ( mCropViewRect . centerX ( ) , mCropViewRect . centerY ( ) , Math . min ( mCropViewRect . width ( ) , mCropViewRect . height ( ) ) / 2.f , mDimmedStrokePaint ) ; } }
target:  This method draws dimmed area around the crop bounds.