/*
 *        editzoom.h
 *        AYM 1998-11-09
 */


/* zoom factors for the digit keys
 */
extern double digit_zoom_factors[10];


/*
 *      edit_zoom_init - initialise
 */
void edit_zoom_init(void);


/*
 *        edit_zoom_in - zoom_in
 *
 *        If zooming in would result in a zoom factor higher than
 *        10.0, do nothing.
 *
 *        Return 0 on success, non-zero on failure.
 */
int edit_zoom_in(edit_t * e);


/*
 *        edit_zoom_out - zoom_out
 *
 *        If zooming out would result in a zoom factor lesser than
 *        0.05, do nothing.
 *
 *        Return 0 on success, non-zero on failure.
 */
int edit_zoom_out(edit_t * e);


/*
 *        edit_set_zoom - set zoom factor
 *
 *        If the new zoom factor is less than 0.05 or more than
 *        10.0, do nothing.
 *
 *        Return 0 on success, non-zero on failure.
 */
int edit_set_zoom(edit_t * e, double zoom_factor);