winattrs.c

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#include <curses.h>

/** @file
 *
 * MuCurses window attribute functions
 *
 */

FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );

/**
 * Get the background rendition attributes for a window
 *
 * @v *win      subject window
 * @ret ch      chtype rendition representation
 */
inline chtype getbkgd ( WINDOW *win ) {
        return win->attrs;
}

/**
 * Turn off attributes in a window
 *
 * @v win       subject window
 * @v attrs     attributes to enable
 * @ret rc      return status code
 */
int wattroff ( WINDOW *win, int attrs ) {
        win->attrs &= ~attrs;
        return OK;
}

/**
 * Turn on attributes in a window
 *
 * @v win       subject window
 * @v attrs     attributes to enable
 * @ret rc      return status code
 */
int wattron ( WINDOW *win, int attrs ) {
        win->attrs |= attrs;
        return OK;
}

/**
 * Set attributes in a window
 *
 * @v win       subject window
 * @v attrs     attributes to enable
 * @ret rc      return status code
 */
int wattrset ( WINDOW *win, int attrs ) {
        win->attrs = ( attrs | ( win->attrs & A_COLOR ) );
        return OK;
}

/**
 * Get attributes and colour pair information
 *
 * @v *win      window to obtain information from
 * @v *attrs    address in which to store attributes
 * @v *pair     address in which to store colour pair
 * @v *opts     undefined (for future implementation)
 * @ret rc      return status cude
 */
int wattr_get ( WINDOW *win, attr_t *attrs, short *pair, 
                void *opts __unused ) {
        *attrs = win->attrs & A_ATTRIBUTES;
        *pair = PAIR_NUMBER ( win->attrs );
        return OK;
}

/**
 * Turn off attributes in a window
 *
 * @v *win      subject window
 * @v attrs     attributes to toggle
 * @v *opts     undefined (for future implementation)
 * @ret rc      return status code
 */
int wattr_off ( WINDOW *win, attr_t attrs, 
                void *opts __unused ) {
        wattroff( win, attrs );
        return OK;
}

/**
 * Turn on attributes in a window
 *
 * @v *win      subject window
 * @v attrs     attributes to toggle
 * @v *opts     undefined (for future implementation)
 * @ret rc      return status code
 */
int wattr_on ( WINDOW *win, attr_t attrs, 
               void *opts __unused ) {
        wattron( win, attrs );
        return OK;
}

/**
 * Set attributes and colour pair information in a window
 *
 * @v *win      subject window
 * @v attrs     attributes to set
 * @v cpair     colour pair to set
 * @v *opts     undefined (for future implementation)
 * @ret rc      return status code
 */
int wattr_set ( WINDOW *win, attr_t attrs, short cpair, 
                void *opts __unused ) {
        wattrset( win, attrs | COLOUR_PAIR ( cpair ) );
        return OK;
}

/**
 * Set colour pair for a window
 *
 * @v *win                      subject window
 * @v colour_pair_number        colour pair integer
 * @v *opts                     undefined (for future implementation)
 * @ret rc                      return status code
 */
int wcolour_set ( WINDOW *win, short colour_pair_number, 
                  void *opts __unused ) {
        if ( ( unsigned short )colour_pair_number > COLOUR_PAIRS )
                return ERR;

        win->attrs = ( ( win->attrs & A_ATTRIBUTES ) |
                       COLOUR_PAIR ( colour_pair_number ) );
        return OK;
}