code: func (f *Fpdf) TransformScaleX(scaleWd, x, y float64) {
  	f.TransformScale(scaleWd, 100, x, y)
  }
docs: // TransformScaleX scales the width of the following text, drawings and images.
  // scaleWd is the percentage scaling factor. (x, y) is center of scaling.
  //
  // The TransformBegin() example demonstrates this method.