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Annotation of researchv10no/ncurses/screen/pnoutrfrsh.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * make the current screen look like "win" over the area covered by
                      3:  * win.
                      4:  *
                      5:  * 7/9/81 (Berkeley) @(#)refresh.c     1.6
                      6:  */
                      7: 
                      8: /*     @(#) pnoutrfrsh.c: 1.1 10/15/83 (1.14   3/6/83) */
                      9: #include       "curses.ext"
                     10: 
                     11: extern WINDOW *lwin;
                     12: 
                     13: /* Put out pad but don't actually update screen. */
                     14: pnoutrefresh(pad, pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol)
                     15: register WINDOW        *pad;
                     16: int pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol;
                     17: {
                     18:        register int pr, r, c;
                     19:        register chtype *nsp, *lch;
                     20: 
                     21: # ifdef DEBUG
                     22:        if(outf) fprintf(outf, "PREFRESH(pad %x, pcorner %d,%d, smin %d,%d, smax %d,%d)", pad, pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol);
                     23:        _dumpwin(pad);
                     24:        if(outf) fprintf(outf, "PREFRESH:\n\tfirstch\tlastch\n");
                     25: # endif
                     26: 
                     27:        /* Make sure everything fits */
                     28:        if (pminrow < 0) pminrow = 0;
                     29:        if (pmincol < 0) pmincol = 0;
                     30:        if (sminrow < 0) sminrow = 0;
                     31:        if (smincol < 0) smincol = 0;
                     32:        if (smaxrow >= lines) smaxrow = lines-1;
                     33:        if (smaxcol >= columns) smaxcol = columns-1;
                     34:        if (smaxrow - sminrow > pad->_maxy - pminrow)
                     35:                smaxrow = sminrow + (pad->_maxy - pminrow);
                     36: 
                     37:        /* Copy it out, like a refresh, but appropriately offset */
                     38:        for (pr=pminrow,r=sminrow; r <= smaxrow; r++,pr++) {
                     39:                /* No record of what previous loc looked like, so do it all */
                     40:                lch = &pad->_y[pr][pad->_maxx-1];
                     41:                nsp = &pad->_y[pr][pmincol];
                     42:                _ll_move(r, smincol);
                     43:                for (c=smincol; nsp<=lch; c++) {
                     44:                        if (SP->virt_x++ < columns && c <= smaxcol)
                     45:                                *SP->curptr++ = *nsp++;
                     46:                        else
                     47:                                break;
                     48:                }
                     49:                pad->_firstch[pr] = _NOCHANGE;
                     50:        }
                     51:        lwin = pad;
                     52:        return OK;
                     53: }

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