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1.1 ! root 1: /* ! 2: * allocate space for and set up defaults for a new window ! 3: * ! 4: * 5/9/83 (Berkeley) @(#)newwin.c 1.6 ! 5: */ ! 6: ! 7: # include "curses.ext" ! 8: ! 9: short *calloc(); ! 10: WINDOW *malloc(); ! 11: ! 12: static WINDOW *makenew(); ! 13: ! 14: # undef nl /* don't need it here, and it interferes */ ! 15: ! 16: WINDOW * ! 17: newwin(num_lines, num_cols, begy, begx) ! 18: int num_lines, num_cols, begy, begx; ! 19: { ! 20: reg WINDOW *win; ! 21: reg char *sp; ! 22: reg int i, by, bx, nl, nc; ! 23: ! 24: by = begy; ! 25: bx = begx; ! 26: nl = num_lines; ! 27: nc = num_cols; ! 28: ! 29: if (nl == 0) ! 30: nl = LINES - by; ! 31: if (nc == 0) ! 32: nc = COLS - bx; ! 33: if ((win = makenew(nl, nc, by, bx)) == NULL) ! 34: return ERR; ! 35: for (i = 0; i < nl; i++) ! 36: if ((win->_y[i] = (char *) calloc(nc, sizeof (char))) == NULL) { ! 37: reg int j; ! 38: ! 39: for (j = 0; j < i; j++) ! 40: cfree(win->_y[j]); ! 41: cfree(win->_firstch); ! 42: cfree(win->_lastch); ! 43: cfree(win->_y); ! 44: cfree(win); ! 45: return ERR; ! 46: } ! 47: else ! 48: for (sp = win->_y[i]; sp < win->_y[i] + nc; ) ! 49: *sp++ = ' '; ! 50: win->_nextp = win; ! 51: return win; ! 52: } ! 53: ! 54: WINDOW * ! 55: subwin(orig, num_lines, num_cols, begy, begx) ! 56: reg WINDOW *orig; ! 57: int num_lines, num_cols, begy, begx; { ! 58: ! 59: reg int i; ! 60: reg WINDOW *win; ! 61: reg int by, bx, nl, nc; ! 62: reg int j, k; ! 63: ! 64: by = begy; ! 65: bx = begx; ! 66: nl = num_lines; ! 67: nc = num_cols; ! 68: ! 69: /* ! 70: * make sure window fits inside the original one ! 71: */ ! 72: # ifdef DEBUG ! 73: fprintf(outf, "SUBWIN(%0.2o, %d, %d, %d, %d)\n", orig, nl, nc, by, bx); ! 74: # endif ! 75: if (by < orig->_begy || bx < orig->_begx ! 76: || by + nl > orig->_maxy + orig->_begy ! 77: || bx + nc > orig->_maxx + orig->_begx) { ! 78: # ifdef DEBUG ! 79: fprintf(stderr, "returning ERR (1)\n"); ! 80: fprintf(stderr, "SUBWIN(begx = %d, begy = %d,maxx = %d, maxy = %d, nl = %d, nc = %d, by = %d, bx = %d)\n", orig->_begx,orig->_begy,orig->_maxx,orig->_maxy, nl, nc, by, bx); ! 81: # endif ! 82: return ERR; ! 83: } ! 84: if (nl == 0) ! 85: nl = orig->_maxy + orig->_begy - by; ! 86: if (nc == 0) ! 87: nc = orig->_maxx + orig->_begx - bx; ! 88: if ((win = makenew(nl, nc, by, bx)) == NULL) { ! 89: fprintf(stderr, "returning ERR (2)\n"); ! 90: return ERR; ! 91: } ! 92: j = by - orig->_begy; ! 93: k = bx - orig->_begx; ! 94: for (i = 0; i < nl; i++) ! 95: win->_y[i] = &orig->_y[j++][k]; ! 96: win->_nextp = orig->_nextp; ! 97: orig->_nextp = win; ! 98: win->_orig = orig; ! 99: return win; ! 100: } ! 101: ! 102: /* ! 103: * This routine sets up a window buffer and returns a pointer to it. ! 104: */ ! 105: static WINDOW * ! 106: makenew(num_lines, num_cols, begy, begx) ! 107: int num_lines, num_cols, begy, begx; { ! 108: ! 109: reg int i; ! 110: reg WINDOW *win; ! 111: reg int by, bx, nl, nc; ! 112: ! 113: by = begy; ! 114: bx = begx; ! 115: nl = num_lines; ! 116: nc = num_cols; ! 117: ! 118: # ifdef DEBUG ! 119: fprintf(outf, "MAKENEW(%d, %d, %d, %d)\n", nl, nc, by, bx); ! 120: # endif ! 121: if ((win = (WINDOW *) calloc(1, sizeof (WINDOW))) == NULL) ! 122: return NULL; ! 123: # ifdef DEBUG ! 124: fprintf(outf, "MAKENEW: nl = %d\n", nl); ! 125: # endif ! 126: if ((win->_y = (char **) calloc(nl, sizeof (char *))) == NULL) { ! 127: cfree(win); ! 128: return NULL; ! 129: } ! 130: if ((win->_firstch = calloc(nl, sizeof (short))) == NULL) { ! 131: cfree(win); ! 132: cfree(win->_y); ! 133: return NULL; ! 134: } ! 135: if ((win->_lastch = calloc(nl, sizeof (short))) == NULL) { ! 136: cfree(win); ! 137: cfree(win->_y); ! 138: cfree(win->_firstch); ! 139: return NULL; ! 140: } ! 141: # ifdef DEBUG ! 142: fprintf(outf, "MAKENEW: nc = %d\n", nc); ! 143: # endif ! 144: win->_cury = win->_curx = 0; ! 145: win->_clear = (nl == LINES && nc == COLS); ! 146: win->_maxy = nl; ! 147: win->_maxx = nc; ! 148: win->_begy = by; ! 149: win->_begx = bx; ! 150: win->_flags = 0; ! 151: win->_scroll = win->_leave = FALSE; ! 152: for (i = 0; i < nl; i++) ! 153: win->_firstch[i] = win->_lastch[i] = _NOCHANGE; ! 154: if (bx + nc == COLS) { ! 155: win->_flags |= _ENDLINE; ! 156: if (bx == 0 && nl == LINES && by == 0) ! 157: win->_flags |= _FULLWIN; ! 158: if (by + nl == LINES) ! 159: win->_flags |= _SCROLLWIN; ! 160: } ! 161: # ifdef DEBUG ! 162: fprintf(outf, "MAKENEW: win->_clear = %d\n", win->_clear); ! 163: fprintf(outf, "MAKENEW: win->_leave = %d\n", win->_leave); ! 164: fprintf(outf, "MAKENEW: win->_scroll = %d\n", win->_scroll); ! 165: fprintf(outf, "MAKENEW: win->_flags = %0.2o\n", win->_flags); ! 166: fprintf(outf, "MAKENEW: win->_maxy = %d\n", win->_maxy); ! 167: fprintf(outf, "MAKENEW: win->_maxx = %d\n", win->_maxx); ! 168: fprintf(outf, "MAKENEW: win->_begy = %d\n", win->_begy); ! 169: fprintf(outf, "MAKENEW: win->_begx = %d\n", win->_begx); ! 170: # endif ! 171: return win; ! 172: }
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