public void setWidth(float width){
        this.width = width;
        setLocalScale(width, height, 1f);
    }
Set the width in pixels of the picture, if the width
does not match the texture's width, then the texture will
be scaled to fit the picture.

@param width the width to set.
jme3-core/src/main/java/com/jme3/ui/Picture.java