/* * The functions in this file handle redisplay. There are two halves, the * ones that update the virtual display screen, and the ones that make the * physical display screen the same as the virtual display screen. These * functions use hints that are left in the windows by the commands. * */ #include #include "estruct.h" #include "edef.h" typedef struct VIDEO { int v_flag; /* Flags */ #if COLOR int v_fcolor; /* current forground color */ int v_bcolor; /* current background color */ int v_rfcolor; /* requested forground color */ int v_rbcolor; /* requested background color */ #endif char v_text[1]; /* Screen data. */ } VIDEO; #define VFCHG 0x0001 /* Changed flag */ #define VFEXT 0x0002 /* extended (beyond column 80) */ #define VFREV 0x0004 /* reverse video status */ #define VFREQ 0x0008 /* reverse video request */ #define VFCOL 0x0010 /* color change requested */ VIDEO **vscreen; /* Virtual screen. */ #if MEMMAP == 0 VIDEO **pscreen; /* Physical screen. */ #endif /* * Initialize the data structures used by the display code. The edge vectors * used to access the screens are set up. The operating system's terminal I/O * channel is set up. All the other things get initialized at compile time. * The original window has "WFCHG" set, so that it will get completely * redrawn on the first call to "update". */ vtinit() { register int i; register VIDEO *vp; char *malloc(); TTopen(); /* open the screen */ TTkopen(); /* open the keyboard */ TTrev(FALSE); vscreen = (VIDEO **) malloc(term.t_mrow*sizeof(VIDEO *)); if (vscreen == NULL) exit(1); #if MEMMAP == 0 pscreen = (VIDEO **) malloc(term.t_mrow*sizeof(VIDEO *)); if (pscreen == NULL) exit(1); #endif for (i = 0; i < term.t_mrow; ++i) { vp = (VIDEO *) malloc(sizeof(VIDEO)+term.t_mcol); if (vp == NULL) exit(1); vp->v_flag = 0; #if COLOR vp->v_rfcolor = 7; vp->v_rbcolor = 0; #endif vscreen[i] = vp; #if MEMMAP == 0 vp = (VIDEO *) malloc(sizeof(VIDEO)+term.t_mcol); if (vp == NULL) exit(1); vp->v_flag = 0; pscreen[i] = vp; #endif } } /* * Clean up the virtual terminal system, in anticipation for a return to the * operating system. Move down to the last line and clear it out (the next * system prompt will be written in the line). Shut down the channel to the * terminal. */ vttidy() { mlerase(); movecursor(term.t_nrow, 0); TTflush(); TTclose(); TTkclose(); } /* * Set the virtual cursor to the specified row and column on the virtual * screen. There is no checking for nonsense values; this might be a good * idea during the early stages. */ vtmove(row, col) { vtrow = row; vtcol = col; } /* Write a character to the virtual screen. The virtual row and column are updated. If we are not yet on left edge, don't print it yet. If the line is too long put a "$" in the last column. This routine only puts printing characters into the virtual terminal buffers. Only column overflow is checked. */ vtputc(c) int c; { register VIDEO *vp; /* ptr to line being updated */ vp = vscreen[vtrow]; if (c == '\t') { do { vtputc(' '); } while (((vtcol + taboff)&0x07) != 0); } else if (vtcol >= term.t_ncol) { ++vtcol; vp->v_text[term.t_ncol - 1] = '$'; } else if (c < 0x20 || c == 0x7F) { vtputc('^'); vtputc(c ^ 0x40); } else { if (vtcol >= 0) vp->v_text[vtcol] = c; ++vtcol; } } /* * Erase from the end of the software cursor to the end of the line on which * the software cursor is located. */ vteeol() { register VIDEO *vp; vp = vscreen[vtrow]; while (vtcol < term.t_ncol) vp->v_text[vtcol++] = ' '; } /* upscreen: user routine to force a screen update always finishes complete update */ upscreen(f, n) { update(TRUE); return(TRUE); } /* * Make sure that the display is right. This is a three part process. First, * scan through all of the windows looking for dirty ones. Check the framing, * and refresh the screen. Second, make sure that "currow" and "curcol" are * correct for the current window. Third, make the virtual and physical * screens the same. */ update(force) int force; /* force update past type ahead? */ { register WINDOW *wp; #if TYPEAH if (force == FALSE && typahead()) return(TRUE); #endif #if VISMAC == 0 if (force == FALSE && kbdmode == PLAY) return(TRUE); #endif /* update any windows that need refreshing */ wp = wheadp; while (wp != NULL) { if (wp->w_flag) { /* if the window has changed, service it */ reframe(wp); /* check the framing */ if ((wp->w_flag & ~WFMODE) == WFEDIT) updone(wp); /* update EDITed line */ else if (wp->w_flag & ~WFMOVE) updall(wp); /* update all lines */ if (wp->w_flag & WFMODE) modeline(wp); /* update modeline */ wp->w_flag = 0; wp->w_force = 0; } /* on to the next window */ wp = wp->w_wndp; } /* recalc the current hardware cursor location */ updpos(); #if MEMMAP /* update the cursor and flush the buffers */ movecursor(currow, curcol - lbound); #endif /* check for lines to de-extend */ upddex(); #if NeWS newsupd(force) ; #else /* if screen is garbage, re-plot it */ if (sgarbf != FALSE) updgar(); /* update the virtual screen to the physical screen */ updupd(force); #endif /* update the cursor and flush the buffers */ movecursor(currow, curcol - lbound); TTflush(); return(TRUE); } /* reframe: check to see if the cursor is on in the window and re-frame it if needed or wanted */ reframe(wp) WINDOW *wp; { register LINE *lp; register int i; /* if not a requested reframe, check for a needed one */ if ((wp->w_flag & WFFORCE) == 0) { lp = wp->w_linep; for (i = 0; i < wp->w_ntrows; i++) { /* if the line is in the window, no reframe */ if (lp == wp->w_dotp) return(TRUE); /* if we are at the end of the file, reframe */ if (lp == wp->w_bufp->b_linep) break; /* on to the next line */ lp = lforw(lp); } } /* reaching here, we need a window refresh */ i = wp->w_force; /* how far back to reframe? */ if (i > 0) { /* only one screen worth of lines max */ if (--i >= wp->w_ntrows) i = wp->w_ntrows - 1; } else if (i < 0) { /* negative update???? */ i += wp->w_ntrows; if (i < 0) i = 0; } else i = wp->w_ntrows / 2; /* backup to new line at top of window */ lp = wp->w_dotp; while (i != 0 && lback(lp) != wp->w_bufp->b_linep) { --i; lp = lback(lp); } /* and reset the current line at top of window */ wp->w_linep = lp; wp->w_flag |= WFHARD; wp->w_flag &= ~WFFORCE; return(TRUE); } /* updone: update the current line to the virtual screen */ updone(wp) WINDOW *wp; /* window to update current line in */ { register LINE *lp; /* line to update */ register int sline; /* physical screen line to update */ register int i; /* search down the line we want */ lp = wp->w_linep; sline = wp->w_toprow; while (lp != wp->w_dotp) { ++sline; lp = lforw(lp); } /* and update the virtual line */ vscreen[sline]->v_flag |= VFCHG; vscreen[sline]->v_flag &= ~VFREQ; vtmove(sline, 0); for (i=0; i < llength(lp); ++i) vtputc(lgetc(lp, i)); #if COLOR vscreen[sline]->v_rfcolor = wp->w_fcolor; vscreen[sline]->v_rbcolor = wp->w_bcolor; #endif vteeol(); } /* updall: update all the lines in a window on the virtual screen */ updall(wp) WINDOW *wp; /* window to update lines in */ { register LINE *lp; /* line to update */ register int sline; /* physical screen line to update */ register int i; /* search down the lines, updating them */ lp = wp->w_linep; sline = wp->w_toprow; while (sline < wp->w_toprow + wp->w_ntrows) { /* and update the virtual line */ vscreen[sline]->v_flag |= VFCHG; vscreen[sline]->v_flag &= ~VFREQ; vtmove(sline, 0); if (lp != wp->w_bufp->b_linep) { /* if we are not at the end */ for (i=0; i < llength(lp); ++i) vtputc(lgetc(lp, i)); lp = lforw(lp); } /* on to the next one */ #if COLOR vscreen[sline]->v_rfcolor = wp->w_fcolor; vscreen[sline]->v_rbcolor = wp->w_bcolor; #endif vteeol(); ++sline; } } /* updpos: update the position of the hardware cursor and handle extended lines. This is the only update for simple moves. */ updpos() { register LINE *lp; register int c; register int i; /* find the current row */ lp = curwp->w_linep; currow = curwp->w_toprow; while (lp != curwp->w_dotp) { ++currow; lp = lforw(lp); } /* find the current column */ curcol = 0; i = 0; while (i < curwp->w_doto) { c = lgetc(lp, i++); if (c == '\t') curcol |= 0x07; else if (c < 0x20 || c == 0x7f) ++curcol; ++curcol; } /* if extended, flag so and update the virtual line image */ if (curcol >= term.t_ncol - 1) { vscreen[currow]->v_flag |= (VFEXT | VFCHG); updext(); } else lbound = 0; } /* upddex: de-extend any line that derserves it */ upddex() { register WINDOW *wp; register LINE *lp; register int i,j; wp = wheadp; while (wp != NULL) { lp = wp->w_linep; i = wp->w_toprow; while (i < wp->w_toprow + wp->w_ntrows) { if (vscreen[i]->v_flag & VFEXT) { if ((wp != curwp) || (lp != wp->w_dotp) || (curcol < term.t_ncol - 1)) { vtmove(i, 0); for (j = 0; j < llength(lp); ++j) vtputc(lgetc(lp, j)); vteeol(); /* this line no longer is extended */ vscreen[i]->v_flag &= ~VFEXT; vscreen[i]->v_flag |= VFCHG; } } lp = lforw(lp); ++i; } /* and onward to the next window */ wp = wp->w_wndp; } } /* updgar: if the screen is garbage, clear the physical screen and the virtual screen and force a full update */ updgar() { register char *txt; register int i,j; for (i = 0; i < term.t_nrow; ++i) { vscreen[i]->v_flag |= VFCHG; #if REVSTA vscreen[i]->v_flag &= ~VFREV; #endif #if COLOR vscreen[i]->v_fcolor = gfcolor; vscreen[i]->v_bcolor = gbcolor; #endif #if MEMMAP == 0 txt = pscreen[i]->v_text; for (j = 0; j < term.t_ncol; ++j) txt[j] = ' '; #endif } movecursor(0, 0); /* Erase the screen. */ (*term.t_eeop)(); sgarbf = FALSE; /* Erase-page clears */ mpresf = FALSE; /* the message area. */ #if COLOR mlerase(); /* needs to be cleared if colored */ #endif } /* updupd: update the physical screen from the virtual screen */ updupd(force) int force; /* forced update flag */ { register VIDEO *vp1; register int i; for (i = 0; i < term.t_nrow; ++i) { vp1 = vscreen[i]; /* for each line that needs to be updated*/ if ((vp1->v_flag & VFCHG) != 0) { #if TYPEAH if (force == FALSE && typahead()) return(TRUE); #endif #if MEMMAP updateline(i, vp1); #else updateline(i, vp1, pscreen[i]); #endif } } return(TRUE); } /* updext: update the extended line which the cursor is currently on at a column greater than the terminal width. The line will be scrolled right or left to let the user see where the cursor is */ updext() { register int rcursor; /* real cursor location */ register LINE *lp; /* pointer to current line */ register int j; /* index into line */ /* calculate what column the real cursor will end up in */ rcursor = ((curcol - term.t_ncol) % term.t_scrsiz) + term.t_margin; taboff = lbound = curcol - rcursor + 1; /* scan through the line outputing characters to the virtual screen */ /* once we reach the left edge */ vtmove(currow, -lbound); /* start scanning offscreen */ lp = curwp->w_dotp; /* line to output */ for (j=0; jv_text[0] = '$'; } #if NeWS newsupd(force) /* update the physical screen from the virtual screen */ int force; /* forced update flag */ { register int i ; struct VIDEO *vpv ; /* virtual screen image */ struct VIDEO *vpp ; /* physical screen image */ int bad, badcol, rows ; rows = term.t_nrow ; if (force == FALSE && typahead()) return ; if (sgarbf) { fastupdate() ; return ; } /* play it safe */ colorfix() ; /* if enough lines are bad try to optimize scrolls/kills */ for (bad = 0, i = 0; i < rows; ++i) if (!texttest(i,i)) { bad++ ; if (bad > 3) { if (!scrolls()) kills() ; break ; } } /* count bad lines, if enough need fixed redo whole screen */ for (bad = 0, badcol = 0, i = 0; i < rows; ++i) { vpv = vscreen[i] ; vpv->v_flag &= ~(VFCHG|VFCOL) ; /* clear flag */ if (!texttest(i,i)) { vpv->v_flag |= VFCHG ; bad++ ; } if (!colortest(i)) { vpv->v_flag |= VFCOL ; badcol++ ; } } if (bad == 0 && badcol > 0) { /* pure color update */ colorupdate() ; return ; } if (bad > (3*rows)/4) { /* full update */ fastupdate() ; return ; } /* Fix the bad lines one by one */ for (i = 0; i < rows; ++i) if (vscreen[i]->v_flag & (VFCHG|VFCOL)) updateline(i) ; } /* optimize out scrolls (line breaks, and newlines) */ int scrolls() /* returns true if it does something */ { struct VIDEO *vpv ; /* virtual screen image */ struct VIDEO *vpp ; /* physical screen image */ int i, j, k ; int rows, cols ; int first, match, count, ptarget, end ; rows = term.t_nrow ; cols = term.t_ncol ; first = -1 ; for (i = 0; i < rows; i++) /* find first wrong line */ if (!texttest(i,i)) {first = i ; break ;} if (first < 0) return(FALSE) ; /* no text changes */ vpv = vscreen[first] ; vpp = pscreen[first] ; /* determine types of potential scrolls */ end = endofline(vpv->v_text,cols) ; if ( end == 0 ) ptarget = first ; /* newlines */ else if ( strncmp(vpp->v_text, vpv->v_text, end) == 0 ) ptarget = first + 1 ; /* broken line newlines */ else return(FALSE) ; /* no scrolls */ /* find the matching shifted area */ match = -1 ; for (i = ptarget+1; i < rows; i++) { if (texttest(i, ptarget)) { match = i ; count = 1 ; for (j=match+1, k=ptarget+1; j0 && count>2) { /* got a scroll */ newsscroll(ptarget, match, count) ; for (i = 0; i < count; i++) { vpv = vscreen[match+i] ; vpp = pscreen[match+i] ; strncpy(vpp->v_text, vpv->v_text, cols) ; } return(TRUE) ; } return(FALSE) ; } /* optimize out line kills (full and with a partial kill) */ int kills() /* returns true if it does something */ { struct VIDEO *vpv ; /* virtual screen image */ struct VIDEO *vpp ; /* physical screen image */ int i, j, k ; int rows, cols ; int first, match, count, vtarget, end ; rows = term.t_nrow ; cols = term.t_ncol ; first = -1 ; for (i = 0; i < rows; i++) /* find first wrong line */ if (!texttest(i,i)) {first = i ; break ;} if (first < 0) return(FALSE) ; /* no text changes */ vpv = vscreen[first] ; vpp = pscreen[first] ; vtarget = first + 1 ; /* find the matching shifted area */ match = -1 ; for (i = vtarget+1; i < rows; i++) { if (texttest(vtarget, i)) { match = i ; count = 1 ; for (j=match+1, k=vtarget+1; j0 && texttest(first, match-1)) { /* full kill case */ vtarget-- ; match-- ; count++ ; } /* do the scroll */ if (match>0 && count>2) { /* got a scroll */ newsscroll(match, vtarget, count) ; for (i = 0; i < count; i++) { vpv = vscreen[vtarget+i] ; vpp = pscreen[vtarget+i] ; strncpy(vpp->v_text, vpv->v_text, cols) ; } return(TRUE) ; } return(FALSE) ; } texttest(vrow,prow) /* return TRUE on text match */ int vrow, prow ; /* virtual, physical rows */ { struct VIDEO *vpv = vscreen[vrow] ; /* virtual screen image */ struct VIDEO *vpp = pscreen[prow] ; /* physical screen image */ vpp->v_text[term.t_ncol] = 0 ; vpv->v_text[term.t_ncol] = 0 ; return (!strncmp(vpv->v_text, vpp->v_text, term.t_ncol)) ; } colortest(row) /* TRUE on color match */ int row ; { struct VIDEO *vpv = vscreen[row] ; /* virtual screen image */ int fg, bg ; return (vpv->v_fcolor == vpv->v_rfcolor && vpv->v_bcolor == vpv->v_rbcolor) ; } /* Make sure all the requested colors are reasonable */ colorfix() { struct VIDEO *vpv ; /* virtual screen image */ int row, *fg, *bg ; for (row=0; rowv_rfcolor ; bg = &vpv->v_rbcolor ; if ( (0x7 & *fg) != *fg ) *fg = 7 ; if ( (0x7 & *bg) != *bg ) *bg = 0 ; } } updateline(row) int row ; /* row of screen to update */ { struct VIDEO *vpv = vscreen[row] ; /* virtual screen image */ struct VIDEO *vpp = pscreen[row] ; /* physical screen image */ int end ; end = endofline(vpv->v_text, term.t_ncol) ; strncpy(vpp->v_text, vpv->v_text, term.t_ncol) ; vpv->v_text[end] = 0 ; newsputline(row, vpv->v_text, vpv->v_rfcolor, vpv->v_rbcolor) ; vpv->v_text[end] = ' ' ; vpv->v_fcolor = vpv->v_rfcolor; vpv->v_bcolor = vpv->v_rbcolor; vpv->v_flag &= ~(VFCHG|VFCOL); /* clear flag */ } colorupdate() { struct VIDEO *vpv ; /* virtual screen image */ int row ; for (row=0; rowv_flag & VFCOL) { newssetrowcolors(row, vpv->v_rfcolor, vpv->v_rbcolor) ; vpv->v_fcolor = vpv->v_rfcolor; vpv->v_bcolor = vpv->v_rbcolor; } vpv->v_flag &= ~VFCOL ; } newslocalupdate() ; /* ask for a screen refresh */ } fastupdate() /* redo the entire screen fast */ { int row ; register char *cp, *first ; struct VIDEO *vpv ; /* virtual screen image */ struct VIDEO *vpp ; /* physical screen image */ /* send the row colors */ for (row=0; rowv_rfcolor, vpv->v_rbcolor) ; vpv->v_fcolor = vpv->v_rfcolor; vpv->v_bcolor = vpv->v_rbcolor; } vpv->v_flag &= ~VFCOL ; } /* virtual -> physical buffer */ for (row=0; rowv_text, vpv->v_text, term.t_ncol); vpp->v_text[term.t_ncol] = 0 ; vpv->v_text[term.t_ncol] = 0 ; vpv->v_flag &= ~VFCHG; } /* send the stuff */ newscls() ; for (row=0; rowv_text ; /* don't send trailing blanks */ cp = &first[endofline(first,term.t_ncol)] ; if (cp > first) { *cp = 0 ; newsfastputline(row, first) ; *cp = ' ' ; } } sgarbf = FALSE; } /* return the index of the first blank of trailing whitespace */ int endofline(s,n) char *s ; { int i ; for (i = n - 1; i >= 0; i--) if (s[i] != ' ') return(i+1) ; return(0) ; } #else /* * Update a single line. This does not know how to use insert or delete * character sequences; we are using VT52 functionality. Update the physical * row and column variables. It does try an exploit erase to end of line. The * RAINBOW version of this routine uses fast video. */ #if MEMMAP /* UPDATELINE specific code for the IBM-PC and other compatables */ updateline(row, vp1) int row; /* row of screen to update */ struct VIDEO *vp1; /* virtual screen image */ { #if COLOR scwrite(row, vp1->v_text, vp1->v_rfcolor, vp1->v_rbcolor); vp1->v_fcolor = vp1->v_rfcolor; vp1->v_bcolor = vp1->v_rbcolor; #else if (vp1->v_flag & VFREQ) scwrite(row, vp1->v_text, 0, 7); else scwrite(row, vp1->v_text, 7, 0); #endif vp1->v_flag &= ~(VFCHG | VFCOL); /* flag this line as changed */ } #else updateline(row, vp1, vp2) int row; /* row of screen to update */ struct VIDEO *vp1; /* virtual screen image */ struct VIDEO *vp2; /* physical screen image */ { #if RAINBOW /* UPDATELINE specific code for the DEC rainbow 100 micro */ register char *cp1; register char *cp2; register int nch; /* since we don't know how to make the rainbow do this, turn it off */ flags &= (~VFREV & ~VFREQ); cp1 = &vp1->v_text[0]; /* Use fast video. */ cp2 = &vp2->v_text[0]; putline(row+1, 1, cp1); nch = term.t_ncol; do { *cp2 = *cp1; ++cp2; ++cp1; } while (--nch); *flags &= ~VFCHG; #else /* UPDATELINE code for all other versions */ register char *cp1; register char *cp2; register char *cp3; register char *cp4; register char *cp5; register int nbflag; /* non-blanks to the right flag? */ int rev; /* reverse video flag */ int req; /* reverse video request flag */ /* set up pointers to virtual and physical lines */ cp1 = &vp1->v_text[0]; cp2 = &vp2->v_text[0]; #if COLOR TTforg(vp1->v_rfcolor); TTbacg(vp1->v_rbcolor); #endif #if REVSTA | COLOR /* if we need to change the reverse video status of the current line, we need to re-write the entire line */ rev = (vp1->v_flag & VFREV) == VFREV; req = (vp1->v_flag & VFREQ) == VFREQ; if ((rev != req) #if COLOR || (vp1->v_fcolor != vp1->v_rfcolor) || (vp1->v_bcolor != vp1->v_rbcolor) #endif #if HP150 /* the HP150 has some reverse video problems */ || req || rev #endif ) { movecursor(row, 0); /* Go to start of line. */ /* set rev video if needed */ if (rev != req) (*term.t_rev)(req); /* scan through the line and dump it to the screen and the virtual screen array */ cp3 = &vp1->v_text[term.t_ncol]; while (cp1 < cp3) { TTputc(*cp1); ++ttcol; *cp2++ = *cp1++; } /* turn rev video off */ if (rev != req) (*term.t_rev)(FALSE); /* update the needed flags */ vp1->v_flag &= ~VFCHG; if (req) vp1->v_flag |= VFREV; else vp1->v_flag &= ~VFREV; #if COLOR vp1->v_fcolor = vp1->v_rfcolor; vp1->v_bcolor = vp1->v_rbcolor; #endif return(TRUE); } #endif /* advance past any common chars at the left */ while (cp1 != &vp1->v_text[term.t_ncol] && cp1[0] == cp2[0]) { ++cp1; ++cp2; } /* This can still happen, even though we only call this routine on changed * lines. A hard update is always done when a line splits, a massive * change is done, or a buffer is displayed twice. This optimizes out most * of the excess updating. A lot of computes are used, but these tend to * be hard operations that do a lot of update, so I don't really care. */ /* if both lines are the same, no update needs to be done */ if (cp1 == &vp1->v_text[term.t_ncol]) { vp1->v_flag &= ~VFCHG; /* flag this line is changed */ return(TRUE); } /* find out if there is a match on the right */ nbflag = FALSE; cp3 = &vp1->v_text[term.t_ncol]; cp4 = &vp2->v_text[term.t_ncol]; while (cp3[-1] == cp4[-1]) { --cp3; --cp4; if (cp3[0] != ' ') /* Note if any nonblank */ nbflag = TRUE; /* in right match. */ } cp5 = cp3; /* Erase to EOL ? */ if (nbflag == FALSE && eolexist == TRUE && (req != TRUE)) { while (cp5!=cp1 && cp5[-1]==' ') --cp5; if (cp3-cp5 <= 3) /* Use only if erase is */ cp5 = cp3; /* fewer characters. */ } movecursor(row, cp1 - &vp1->v_text[0]); /* Go to start of line. */ #if REVSTA TTrev(rev); #endif while (cp1 != cp5) { /* Ordinary. */ TTputc(*cp1); ++ttcol; *cp2++ = *cp1++; } if (cp5 != cp3) { /* Erase. */ TTeeol(); while (cp1 != cp3) *cp2++ = *cp1++; } #if REVSTA TTrev(FALSE); #endif vp1->v_flag &= ~VFCHG; /* flag this line as updated */ return(TRUE); #endif } #endif #endif NeWS /* * Redisplay the mode line for the window pointed to by the "wp". This is the * only routine that has any idea of how the modeline is formatted. You can * change the modeline format by hacking at this routine. Called by "update" * any time there is a dirty window. */ modeline(wp) WINDOW *wp; { register char *cp; register int c; register int n; /* cursor position count */ register BUFFER *bp; register i; /* loop index */ register lchar; /* character to draw line in buffer with */ register firstm; /* is this the first mode? */ char tline[NLINE]; /* buffer for part of mode line */ n = wp->w_toprow+wp->w_ntrows; /* Location. */ vscreen[n]->v_flag |= VFCHG | VFREQ | VFCOL;/* Redraw next time. */ #if NeWS vscreen[n]->v_rfcolor = 0; vscreen[n]->v_rbcolor = 7; if (wp == curwp) { /* mark the current buffer */ lchar = '^' ; } else { lchar = ' ' ; } vtmove(n, 0); /* Seek to right line. */ #else #if COLOR vscreen[n]->v_rfcolor = 0; /* black on */ vscreen[n]->v_rbcolor = 7; /* white.....*/ #endif vtmove(n, 0); /* Seek to right line. */ if (wp == curwp) /* mark the current buffer */ lchar = '='; else #if REVSTA if (revexist) lchar = ' '; else #endif lchar = '-'; #endif vtputc(lchar); bp = wp->w_bufp; if ((bp->b_flag&BFCHG) != 0) /* "*" if changed. */ vtputc('*'); else vtputc(lchar); n = 2; strcpy(tline, " "); /* Buffer name. */ strcat(tline, PROGNAME); strcat(tline, " "); strcat(tline, VERSION); strcat(tline, " ("); /* display the modes */ firstm = TRUE; for (i = 0; i < NUMMODES; i++) /* add in the mode flags */ if (wp->w_bufp->b_mode & (1 << i)) { if (firstm != TRUE) strcat(tline, " "); firstm = FALSE; strcat(tline, modename[i]); } strcat(tline,") "); cp = &tline[0]; while ((c = *cp++) != 0) { vtputc(c); ++n; } #if 0 vtputc(lchar); vtputc((wp->w_flag&WFCOLR) != 0 ? 'C' : lchar); vtputc((wp->w_flag&WFMODE) != 0 ? 'M' : lchar); vtputc((wp->w_flag&WFHARD) != 0 ? 'H' : lchar); vtputc((wp->w_flag&WFEDIT) != 0 ? 'E' : lchar); vtputc((wp->w_flag&WFMOVE) != 0 ? 'V' : lchar); vtputc((wp->w_flag&WFFORCE) != 0 ? 'F' : lchar); vtputc(lchar); n += 8; #endif vtputc(lchar); vtputc(lchar); vtputc(' '); n += 3; cp = &bp->b_bname[0]; while ((c = *cp++) != 0) { vtputc(c); ++n; } vtputc(' '); vtputc(lchar); vtputc(lchar); n += 3; if (bp->b_fname[0] != 0) /* File name. */ { vtputc(' '); ++n; cp = "File: "; while ((c = *cp++) != 0) { vtputc(c); ++n; } cp = &bp->b_fname[0]; while ((c = *cp++) != 0) { vtputc(c); ++n; } vtputc(' '); ++n; } while (n < term.t_ncol) /* Pad to full width. */ { vtputc(lchar); ++n; } } upmode() /* update all the mode lines */ { register WINDOW *wp; #if NeWS /* tell workstation the current modes */ newsreportmodes() ; #endif wp = wheadp; while (wp != NULL) { wp->w_flag |= WFMODE; wp = wp->w_wndp; } } /* * Send a command to the terminal to move the hardware cursor to row "row" * and column "col". The row and column arguments are origin 0. Optimize out * random calls. Update "ttrow" and "ttcol". */ movecursor(row, col) { #if ! NeWS /* "line buffered" */ if (row!=ttrow || col!=ttcol) #endif { ttrow = row; ttcol = col; TTmove(row, col); } } #if NeWS /* buffer the message line stuff, newsputc is slow */ #define NEWSBUFSIZ 256 #undef TTputc #undef TTflush #define TTputc(c) bufputc(c) #define TTflush() bufputc((char)0) bufputc(c) char c ; { static bufindex = 0 ; static char outbuf[NEWSBUFSIZ] ; if (c == NULL || bufindex >= NEWSBUFSIZ || bufindex >= term.t_ncol) { outbuf[bufindex] = NULL ; newsputline(term.t_nrow, outbuf, 7, 0) ; movecursor(term.t_nrow, strlen(outbuf)) ; newsflush() ; bufindex = 0 ; } else outbuf[bufindex++] = c ; } #endif /* * Erase the message line. This is a special routine because the message line * is not considered to be part of the virtual screen. It always works * immediately; the terminal buffer is flushed via a call to the flusher. */ mlerase() { int i; movecursor(term.t_nrow, 0); if (discmd == FALSE) return; #if COLOR TTforg(7); TTbacg(0); #endif if (eolexist == TRUE) TTeeol(); else { for (i = 0; i < term.t_ncol - 1; i++) TTputc(' '); movecursor(term.t_nrow, 1); /* force the move! */ movecursor(term.t_nrow, 0); } TTflush(); mpresf = FALSE; } /* * Write a message into the message line. Keep track of the physical cursor * position. A small class of printf like format items is handled. Assumes the * stack grows down; this assumption is made by the "++" in the argument scan * loop. Set the "message line" flag TRUE. */ mlwrite(fmt, arg) char *fmt; /* format string for output */ char *arg; /* pointer to first argument to print */ { register int c; /* current char in format string */ register char *ap; /* ptr to current data field */ /* if we are not currently echoing on the command line, abort this */ if (discmd == FALSE) { movecursor(term.t_nrow, 0); return; } #if COLOR /* set up the proper colors for the command line */ TTforg(7); TTbacg(0); #endif /* if we can not erase to end-of-line, do it manually */ if (eolexist == FALSE) { mlerase(); TTflush(); } movecursor(term.t_nrow, 0); ap = (char *) &arg; while ((c = *fmt++) != 0) { if (c != '%') { TTputc(c); ++ttcol; } else { c = *fmt++; switch (c) { case 'd': mlputi(*(int *)ap, 10); ap += sizeof(int); break; case 'o': mlputi(*(int *)ap, 8); ap += sizeof(int); break; case 'x': mlputi(*(int *)ap, 16); ap += sizeof(int); break; case 'D': mlputli(*(long *)ap, 10); ap += sizeof(long); break; case 's': mlputs(*(char **)ap); ap += sizeof(char *); break; case 'f': mlputf(*(int *)ap); ap += sizeof(int); break; default: TTputc(c); ++ttcol; } } } /* if we can, erase to the end of screen */ if (eolexist == TRUE) TTeeol(); TTflush(); mpresf = TRUE; } /* Force a string out to the message line regardless of the current $discmd setting. This is needed when $debug is TRUE and for the write-message and clear-message-line commands */ mlforce(s) char *s; /* string to force out */ { register oldcmd; /* original command display flag */ oldcmd = discmd; /* save the discmd value */ discmd = TRUE; /* and turn display on */ mlwrite(s); /* write the string out */ discmd = oldcmd; /* and restore the original setting */ } /* * Write out a string. Update the physical cursor position. This assumes that * the characters in the string all have width "1"; if this is not the case * things will get screwed up a little. */ mlputs(s) char *s; { register int c; while ((c = *s++) != 0) { TTputc(c); ++ttcol; } } /* * Write out an integer, in the specified radix. Update the physical cursor * position. */ mlputi(i, r) { register int q; static char hexdigits[] = "0123456789ABCDEF"; if (i < 0) { i = -i; TTputc('-'); } q = i/r; if (q != 0) mlputi(q, r); TTputc(hexdigits[i%r]); ++ttcol; } /* * do the same except as a long integer. */ mlputli(l, r) long l; { register long q; if (l < 0) { l = -l; TTputc('-'); } q = l/r; if (q != 0) mlputli(q, r); TTputc((int)(l%r)+'0'); ++ttcol; } /* * write out a scaled integer with two decimal places */ mlputf(s) int s; /* scaled integer to output */ { int i; /* integer portion of number */ int f; /* fractional portion of number */ /* break it up */ i = s / 100; f = s % 100; /* send out the integer portion */ mlputi(i, 10); TTputc('.'); TTputc((f / 10) + '0'); TTputc((f % 10) + '0'); ttcol += 3; } #if RAINBOW putline(row, col, buf) int row, col; char buf[]; { int n; n = strlen(buf); if (col + n - 1 > term.t_ncol) n = term.t_ncol - col + 1; Put_Data(row, col, n, buf); } #endif