1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate * Copyright 2001 Sun Microsystems, Inc. All rights reserved.
3*7c478bd9Sstevel@tonic-gate * Use is subject to license terms.
4*7c478bd9Sstevel@tonic-gate */
5*7c478bd9Sstevel@tonic-gate
6*7c478bd9Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
7*7c478bd9Sstevel@tonic-gate /* All Rights Reserved */
8*7c478bd9Sstevel@tonic-gate
9*7c478bd9Sstevel@tonic-gate /*
10*7c478bd9Sstevel@tonic-gate * Copyright (c) 1980 Regents of the University of California.
11*7c478bd9Sstevel@tonic-gate * All rights reserved. The Berkeley software License Agreement
12*7c478bd9Sstevel@tonic-gate * specifies the terms and conditions for redistribution.
13*7c478bd9Sstevel@tonic-gate */
14*7c478bd9Sstevel@tonic-gate
15*7c478bd9Sstevel@tonic-gate /*LINTLIBRARY*/
16*7c478bd9Sstevel@tonic-gate
17*7c478bd9Sstevel@tonic-gate #ifndef lint
18*7c478bd9Sstevel@tonic-gate static char
19*7c478bd9Sstevel@tonic-gate sccsid[] = "@(#)refresh.c 1.8 89/08/24 SMI"; /* from UCB 5.1 85/06/07 */
20*7c478bd9Sstevel@tonic-gate #endif /* not lint */
21*7c478bd9Sstevel@tonic-gate
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate * make the current screen look like "win" over the area coverd by
24*7c478bd9Sstevel@tonic-gate * win.
25*7c478bd9Sstevel@tonic-gate */
26*7c478bd9Sstevel@tonic-gate
27*7c478bd9Sstevel@tonic-gate #include "curses.ext"
28*7c478bd9Sstevel@tonic-gate #include <term.h>
29*7c478bd9Sstevel@tonic-gate #include <string.h>
30*7c478bd9Sstevel@tonic-gate
31*7c478bd9Sstevel@tonic-gate #ifdef DEBUG
32*7c478bd9Sstevel@tonic-gate #define DEBUGSTATIC
33*7c478bd9Sstevel@tonic-gate #else
34*7c478bd9Sstevel@tonic-gate #define DEBUGSTATIC static
35*7c478bd9Sstevel@tonic-gate #endif
36*7c478bd9Sstevel@tonic-gate
37*7c478bd9Sstevel@tonic-gate DEBUGSTATIC short ly, lx;
38*7c478bd9Sstevel@tonic-gate DEBUGSTATIC bool curwin;
39*7c478bd9Sstevel@tonic-gate WINDOW *_win = NULL;
40*7c478bd9Sstevel@tonic-gate
41*7c478bd9Sstevel@tonic-gate /* forward declarations */
42*7c478bd9Sstevel@tonic-gate DEBUGSTATIC void domvcur(int, int, int, int);
43*7c478bd9Sstevel@tonic-gate DEBUGSTATIC int makech(WINDOW *, short);
44*7c478bd9Sstevel@tonic-gate
45*7c478bd9Sstevel@tonic-gate int
wrefresh(WINDOW * win)46*7c478bd9Sstevel@tonic-gate wrefresh(WINDOW *win)
47*7c478bd9Sstevel@tonic-gate {
48*7c478bd9Sstevel@tonic-gate short wy;
49*7c478bd9Sstevel@tonic-gate int retval;
50*7c478bd9Sstevel@tonic-gate
51*7c478bd9Sstevel@tonic-gate /*
52*7c478bd9Sstevel@tonic-gate * make sure were in visual state
53*7c478bd9Sstevel@tonic-gate */
54*7c478bd9Sstevel@tonic-gate if (_endwin) {
55*7c478bd9Sstevel@tonic-gate (void) _puts(VS);
56*7c478bd9Sstevel@tonic-gate (void) _puts(TI);
57*7c478bd9Sstevel@tonic-gate _endwin = FALSE;
58*7c478bd9Sstevel@tonic-gate }
59*7c478bd9Sstevel@tonic-gate
60*7c478bd9Sstevel@tonic-gate /*
61*7c478bd9Sstevel@tonic-gate * initialize loop parameters
62*7c478bd9Sstevel@tonic-gate */
63*7c478bd9Sstevel@tonic-gate
64*7c478bd9Sstevel@tonic-gate ly = curscr->_cury;
65*7c478bd9Sstevel@tonic-gate lx = curscr->_curx;
66*7c478bd9Sstevel@tonic-gate _win = win;
67*7c478bd9Sstevel@tonic-gate curwin = (win == curscr);
68*7c478bd9Sstevel@tonic-gate
69*7c478bd9Sstevel@tonic-gate if (win->_clear || curscr->_clear || curwin) {
70*7c478bd9Sstevel@tonic-gate if ((win->_flags & _FULLWIN) || curscr->_clear) {
71*7c478bd9Sstevel@tonic-gate (void) _puts(CL);
72*7c478bd9Sstevel@tonic-gate ly = 0;
73*7c478bd9Sstevel@tonic-gate lx = 0;
74*7c478bd9Sstevel@tonic-gate if (!curwin) {
75*7c478bd9Sstevel@tonic-gate curscr->_clear = FALSE;
76*7c478bd9Sstevel@tonic-gate curscr->_cury = 0;
77*7c478bd9Sstevel@tonic-gate curscr->_curx = 0;
78*7c478bd9Sstevel@tonic-gate (void) werase(curscr);
79*7c478bd9Sstevel@tonic-gate }
80*7c478bd9Sstevel@tonic-gate (void) touchwin(win);
81*7c478bd9Sstevel@tonic-gate }
82*7c478bd9Sstevel@tonic-gate win->_clear = FALSE;
83*7c478bd9Sstevel@tonic-gate }
84*7c478bd9Sstevel@tonic-gate if (!CA) {
85*7c478bd9Sstevel@tonic-gate if (win->_curx != 0)
86*7c478bd9Sstevel@tonic-gate (void) _putchar('\n');
87*7c478bd9Sstevel@tonic-gate if (!curwin)
88*7c478bd9Sstevel@tonic-gate (void) werase(curscr);
89*7c478bd9Sstevel@tonic-gate }
90*7c478bd9Sstevel@tonic-gate #ifdef DEBUG
91*7c478bd9Sstevel@tonic-gate fprintf(outf, "REFRESH(%0.2o): curwin = %d\n", win, curwin);
92*7c478bd9Sstevel@tonic-gate fprintf(outf, "REFRESH:\n\tfirstch\tlastch\n");
93*7c478bd9Sstevel@tonic-gate #endif
94*7c478bd9Sstevel@tonic-gate for (wy = 0; wy < win->_maxy; wy++) {
95*7c478bd9Sstevel@tonic-gate #ifdef DEBUG
96*7c478bd9Sstevel@tonic-gate fprintf(outf, "%d\t%d\t%d\n", wy, win->_firstch[wy],
97*7c478bd9Sstevel@tonic-gate win->_lastch[wy]);
98*7c478bd9Sstevel@tonic-gate #endif
99*7c478bd9Sstevel@tonic-gate if (win->_firstch[wy] != _NOCHANGE)
100*7c478bd9Sstevel@tonic-gate if (makech(win, wy) == ERR)
101*7c478bd9Sstevel@tonic-gate return (ERR);
102*7c478bd9Sstevel@tonic-gate else {
103*7c478bd9Sstevel@tonic-gate if (win->_firstch[wy] >= win->_ch_off)
104*7c478bd9Sstevel@tonic-gate win->_firstch[wy] = win->_maxx +
105*7c478bd9Sstevel@tonic-gate win->_ch_off;
106*7c478bd9Sstevel@tonic-gate if (win->_lastch[wy] < win->_maxx +
107*7c478bd9Sstevel@tonic-gate win->_ch_off)
108*7c478bd9Sstevel@tonic-gate win->_lastch[wy] = win->_ch_off;
109*7c478bd9Sstevel@tonic-gate if (win->_lastch[wy] < win->_firstch[wy])
110*7c478bd9Sstevel@tonic-gate win->_firstch[wy] = _NOCHANGE;
111*7c478bd9Sstevel@tonic-gate }
112*7c478bd9Sstevel@tonic-gate #ifdef DEBUG
113*7c478bd9Sstevel@tonic-gate fprintf(outf, "\t%d\t%d\n", win->_firstch[wy],
114*7c478bd9Sstevel@tonic-gate win->_lastch[wy]);
115*7c478bd9Sstevel@tonic-gate #endif
116*7c478bd9Sstevel@tonic-gate }
117*7c478bd9Sstevel@tonic-gate
118*7c478bd9Sstevel@tonic-gate if (win == curscr)
119*7c478bd9Sstevel@tonic-gate domvcur(ly, lx, win->_cury, win->_curx);
120*7c478bd9Sstevel@tonic-gate else {
121*7c478bd9Sstevel@tonic-gate if (win->_leave) {
122*7c478bd9Sstevel@tonic-gate curscr->_cury = ly;
123*7c478bd9Sstevel@tonic-gate curscr->_curx = lx;
124*7c478bd9Sstevel@tonic-gate ly -= win->_begy;
125*7c478bd9Sstevel@tonic-gate lx -= win->_begx;
126*7c478bd9Sstevel@tonic-gate if (ly >= 0 && ly < win->_maxy && lx >= 0 &&
127*7c478bd9Sstevel@tonic-gate lx < win->_maxx) {
128*7c478bd9Sstevel@tonic-gate win->_cury = ly;
129*7c478bd9Sstevel@tonic-gate win->_curx = lx;
130*7c478bd9Sstevel@tonic-gate }
131*7c478bd9Sstevel@tonic-gate else
132*7c478bd9Sstevel@tonic-gate win->_cury = win->_curx = 0;
133*7c478bd9Sstevel@tonic-gate } else {
134*7c478bd9Sstevel@tonic-gate domvcur(ly, lx, win->_cury + win->_begy,
135*7c478bd9Sstevel@tonic-gate win->_curx + win->_begx);
136*7c478bd9Sstevel@tonic-gate curscr->_cury = win->_cury + win->_begy;
137*7c478bd9Sstevel@tonic-gate curscr->_curx = win->_curx + win->_begx;
138*7c478bd9Sstevel@tonic-gate }
139*7c478bd9Sstevel@tonic-gate }
140*7c478bd9Sstevel@tonic-gate retval = OK;
141*7c478bd9Sstevel@tonic-gate
142*7c478bd9Sstevel@tonic-gate _win = NULL;
143*7c478bd9Sstevel@tonic-gate (void) fflush(stdout);
144*7c478bd9Sstevel@tonic-gate return (retval);
145*7c478bd9Sstevel@tonic-gate }
146*7c478bd9Sstevel@tonic-gate
147*7c478bd9Sstevel@tonic-gate /*
148*7c478bd9Sstevel@tonic-gate * make a change on the screen
149*7c478bd9Sstevel@tonic-gate */
150*7c478bd9Sstevel@tonic-gate
151*7c478bd9Sstevel@tonic-gate DEBUGSTATIC int
makech(WINDOW * win,short wy)152*7c478bd9Sstevel@tonic-gate makech(WINDOW *win, short wy)
153*7c478bd9Sstevel@tonic-gate {
154*7c478bd9Sstevel@tonic-gate char *nsp, *csp, *ce;
155*7c478bd9Sstevel@tonic-gate short wx, lch, y;
156*7c478bd9Sstevel@tonic-gate intptr_t nlsp, clsp; /* last space in lines */
157*7c478bd9Sstevel@tonic-gate
158*7c478bd9Sstevel@tonic-gate wx = win->_firstch[wy] - win->_ch_off;
159*7c478bd9Sstevel@tonic-gate if (wx >= win->_maxx)
160*7c478bd9Sstevel@tonic-gate return (OK);
161*7c478bd9Sstevel@tonic-gate else if (wx < 0)
162*7c478bd9Sstevel@tonic-gate wx = 0;
163*7c478bd9Sstevel@tonic-gate lch = win->_lastch[wy] - win->_ch_off;
164*7c478bd9Sstevel@tonic-gate if (lch < 0)
165*7c478bd9Sstevel@tonic-gate return (OK);
166*7c478bd9Sstevel@tonic-gate else if (lch >= win->_maxx)
167*7c478bd9Sstevel@tonic-gate lch = win->_maxx - 1;
168*7c478bd9Sstevel@tonic-gate y = wy + win->_begy;
169*7c478bd9Sstevel@tonic-gate
170*7c478bd9Sstevel@tonic-gate if (curwin)
171*7c478bd9Sstevel@tonic-gate csp = " ";
172*7c478bd9Sstevel@tonic-gate else
173*7c478bd9Sstevel@tonic-gate csp = &curscr->_y[wy + win->_begy][wx + win->_begx];
174*7c478bd9Sstevel@tonic-gate
175*7c478bd9Sstevel@tonic-gate nsp = &win->_y[wy][wx];
176*7c478bd9Sstevel@tonic-gate if (CE && !curwin) {
177*7c478bd9Sstevel@tonic-gate for (ce = &win->_y[wy][win->_maxx - 1]; *ce == ' '; ce--)
178*7c478bd9Sstevel@tonic-gate if (ce <= win->_y[wy])
179*7c478bd9Sstevel@tonic-gate break;
180*7c478bd9Sstevel@tonic-gate nlsp = ce - win->_y[wy];
181*7c478bd9Sstevel@tonic-gate }
182*7c478bd9Sstevel@tonic-gate
183*7c478bd9Sstevel@tonic-gate if (!curwin)
184*7c478bd9Sstevel@tonic-gate ce = CE;
185*7c478bd9Sstevel@tonic-gate else
186*7c478bd9Sstevel@tonic-gate ce = NULL;
187*7c478bd9Sstevel@tonic-gate
188*7c478bd9Sstevel@tonic-gate while (wx <= lch) {
189*7c478bd9Sstevel@tonic-gate if (*nsp != *csp) {
190*7c478bd9Sstevel@tonic-gate domvcur(ly, lx, y, wx + win->_begx);
191*7c478bd9Sstevel@tonic-gate #ifdef DEBUG
192*7c478bd9Sstevel@tonic-gate fprintf(outf, "MAKECH: 1: wx = %d, lx = %d\n", wx, lx);
193*7c478bd9Sstevel@tonic-gate #endif
194*7c478bd9Sstevel@tonic-gate ly = y;
195*7c478bd9Sstevel@tonic-gate lx = wx + win->_begx;
196*7c478bd9Sstevel@tonic-gate while (wx <= lch && *nsp != *csp) {
197*7c478bd9Sstevel@tonic-gate if (ce != NULL && wx >= nlsp && *nsp == ' ') {
198*7c478bd9Sstevel@tonic-gate /*
199*7c478bd9Sstevel@tonic-gate * check for clear to end-of-line
200*7c478bd9Sstevel@tonic-gate */
201*7c478bd9Sstevel@tonic-gate ce = &curscr->_y[ly][COLS - 1];
202*7c478bd9Sstevel@tonic-gate while (*ce == ' ')
203*7c478bd9Sstevel@tonic-gate if (ce-- <= csp)
204*7c478bd9Sstevel@tonic-gate break;
205*7c478bd9Sstevel@tonic-gate clsp = ce - curscr->_y[ly] - win->_begx;
206*7c478bd9Sstevel@tonic-gate #ifdef DEBUG
207*7c478bd9Sstevel@tonic-gate fprintf(outf, "MAKECH: clsp = %d,"
208*7c478bd9Sstevel@tonic-gate " nlsp = %d\n", clsp, nlsp);
209*7c478bd9Sstevel@tonic-gate #endif
210*7c478bd9Sstevel@tonic-gate if (clsp - nlsp >= strlen(CE) &&
211*7c478bd9Sstevel@tonic-gate clsp < win->_maxx) {
212*7c478bd9Sstevel@tonic-gate #ifdef DEBUG
213*7c478bd9Sstevel@tonic-gate fprintf(outf, "MAKECH: using"
214*7c478bd9Sstevel@tonic-gate " CE\n");
215*7c478bd9Sstevel@tonic-gate #endif
216*7c478bd9Sstevel@tonic-gate (void) _puts(CE);
217*7c478bd9Sstevel@tonic-gate lx = wx + win->_begx;
218*7c478bd9Sstevel@tonic-gate while (wx++ <= clsp)
219*7c478bd9Sstevel@tonic-gate *csp++ = ' ';
220*7c478bd9Sstevel@tonic-gate return (OK);
221*7c478bd9Sstevel@tonic-gate }
222*7c478bd9Sstevel@tonic-gate ce = NULL;
223*7c478bd9Sstevel@tonic-gate }
224*7c478bd9Sstevel@tonic-gate /*
225*7c478bd9Sstevel@tonic-gate * enter/exit standout mode as appropriate
226*7c478bd9Sstevel@tonic-gate */
227*7c478bd9Sstevel@tonic-gate if (SO && (*nsp&_STANDOUT) !=
228*7c478bd9Sstevel@tonic-gate (curscr->_flags&_STANDOUT)) {
229*7c478bd9Sstevel@tonic-gate if (*nsp & _STANDOUT) {
230*7c478bd9Sstevel@tonic-gate (void) _puts(SO);
231*7c478bd9Sstevel@tonic-gate curscr->_flags |= _STANDOUT;
232*7c478bd9Sstevel@tonic-gate } else {
233*7c478bd9Sstevel@tonic-gate (void) _puts(SE);
234*7c478bd9Sstevel@tonic-gate curscr->_flags &= ~_STANDOUT;
235*7c478bd9Sstevel@tonic-gate }
236*7c478bd9Sstevel@tonic-gate }
237*7c478bd9Sstevel@tonic-gate wx++;
238*7c478bd9Sstevel@tonic-gate if (wx >= win->_maxx && wy == win->_maxy - 1)
239*7c478bd9Sstevel@tonic-gate if (win->_scroll) {
240*7c478bd9Sstevel@tonic-gate if ((curscr->_flags&_STANDOUT) &&
241*7c478bd9Sstevel@tonic-gate (win->_flags & _ENDLINE))
242*7c478bd9Sstevel@tonic-gate if (!MS) {
243*7c478bd9Sstevel@tonic-gate (void) _puts(SE);
244*7c478bd9Sstevel@tonic-gate curscr->_flags &=
245*7c478bd9Sstevel@tonic-gate ~_STANDOUT;
246*7c478bd9Sstevel@tonic-gate }
247*7c478bd9Sstevel@tonic-gate if (!curwin)
248*7c478bd9Sstevel@tonic-gate (void) _putchar((*csp = *nsp) &
249*7c478bd9Sstevel@tonic-gate 0177);
250*7c478bd9Sstevel@tonic-gate else
251*7c478bd9Sstevel@tonic-gate (void) _putchar(*nsp & 0177);
252*7c478bd9Sstevel@tonic-gate if (win->_flags&_FULLWIN && !curwin)
253*7c478bd9Sstevel@tonic-gate (void) scroll(curscr);
254*7c478bd9Sstevel@tonic-gate if (!curwin) {
255*7c478bd9Sstevel@tonic-gate ly = wy + win->_begy;
256*7c478bd9Sstevel@tonic-gate lx = wx + win->_begx;
257*7c478bd9Sstevel@tonic-gate } else {
258*7c478bd9Sstevel@tonic-gate ly = win->_begy+win->_cury;
259*7c478bd9Sstevel@tonic-gate lx = win->_begx+win->_curx;
260*7c478bd9Sstevel@tonic-gate }
261*7c478bd9Sstevel@tonic-gate return (OK);
262*7c478bd9Sstevel@tonic-gate } else if (win->_flags&_SCROLLWIN) {
263*7c478bd9Sstevel@tonic-gate wx = wx - 1;
264*7c478bd9Sstevel@tonic-gate lx = wx;
265*7c478bd9Sstevel@tonic-gate return (ERR);
266*7c478bd9Sstevel@tonic-gate }
267*7c478bd9Sstevel@tonic-gate if (!curwin)
268*7c478bd9Sstevel@tonic-gate (void) _putchar((*csp++ = *nsp) & 0177);
269*7c478bd9Sstevel@tonic-gate else
270*7c478bd9Sstevel@tonic-gate (void) _putchar(*nsp & 0177);
271*7c478bd9Sstevel@tonic-gate #ifdef FULLDEBUG
272*7c478bd9Sstevel@tonic-gate fprintf(outf,
273*7c478bd9Sstevel@tonic-gate "MAKECH:putchar(%c)\n", *nsp & 0177);
274*7c478bd9Sstevel@tonic-gate #endif
275*7c478bd9Sstevel@tonic-gate if (UC && (*nsp & _STANDOUT)) {
276*7c478bd9Sstevel@tonic-gate (void) _putchar('\b');
277*7c478bd9Sstevel@tonic-gate (void) _puts(UC);
278*7c478bd9Sstevel@tonic-gate }
279*7c478bd9Sstevel@tonic-gate nsp++;
280*7c478bd9Sstevel@tonic-gate }
281*7c478bd9Sstevel@tonic-gate #ifdef DEBUG
282*7c478bd9Sstevel@tonic-gate fprintf(outf, "MAKECH: 2: wx = %d, lx = %d\n", wx, lx);
283*7c478bd9Sstevel@tonic-gate #endif
284*7c478bd9Sstevel@tonic-gate if (lx == wx + win->_begx) /* if no change */
285*7c478bd9Sstevel@tonic-gate break;
286*7c478bd9Sstevel@tonic-gate lx = wx + win->_begx;
287*7c478bd9Sstevel@tonic-gate if (lx >= COLS && AM) {
288*7c478bd9Sstevel@tonic-gate lx = 0;
289*7c478bd9Sstevel@tonic-gate ly++;
290*7c478bd9Sstevel@tonic-gate /*
291*7c478bd9Sstevel@tonic-gate * xn glitch: chomps a newline after auto-wrap.
292*7c478bd9Sstevel@tonic-gate * we just feed it now and forget about it.
293*7c478bd9Sstevel@tonic-gate */
294*7c478bd9Sstevel@tonic-gate if (XN) {
295*7c478bd9Sstevel@tonic-gate (void) _putchar('\n');
296*7c478bd9Sstevel@tonic-gate (void) _putchar('\r');
297*7c478bd9Sstevel@tonic-gate }
298*7c478bd9Sstevel@tonic-gate }
299*7c478bd9Sstevel@tonic-gate } else if (wx <= lch)
300*7c478bd9Sstevel@tonic-gate while (wx <= lch && *nsp == *csp) {
301*7c478bd9Sstevel@tonic-gate nsp++;
302*7c478bd9Sstevel@tonic-gate if (!curwin)
303*7c478bd9Sstevel@tonic-gate csp++;
304*7c478bd9Sstevel@tonic-gate ++wx;
305*7c478bd9Sstevel@tonic-gate }
306*7c478bd9Sstevel@tonic-gate else
307*7c478bd9Sstevel@tonic-gate break;
308*7c478bd9Sstevel@tonic-gate #ifdef DEBUG
309*7c478bd9Sstevel@tonic-gate fprintf(outf, "MAKECH: 3: wx = %d, lx = %d\n", wx, lx);
310*7c478bd9Sstevel@tonic-gate #endif
311*7c478bd9Sstevel@tonic-gate }
312*7c478bd9Sstevel@tonic-gate return (OK);
313*7c478bd9Sstevel@tonic-gate }
314*7c478bd9Sstevel@tonic-gate
315*7c478bd9Sstevel@tonic-gate /*
316*7c478bd9Sstevel@tonic-gate * perform a mvcur, leaving standout mode if necessary
317*7c478bd9Sstevel@tonic-gate */
318*7c478bd9Sstevel@tonic-gate
319*7c478bd9Sstevel@tonic-gate DEBUGSTATIC void
domvcur(int oy,int ox,int ny,int nx)320*7c478bd9Sstevel@tonic-gate domvcur(int oy, int ox, int ny, int nx)
321*7c478bd9Sstevel@tonic-gate {
322*7c478bd9Sstevel@tonic-gate if (curscr->_flags & _STANDOUT && !MS) {
323*7c478bd9Sstevel@tonic-gate (void) _puts(SE);
324*7c478bd9Sstevel@tonic-gate curscr->_flags &= ~_STANDOUT;
325*7c478bd9Sstevel@tonic-gate }
326*7c478bd9Sstevel@tonic-gate (void) mvcur(oy, ox, ny, nx);
327*7c478bd9Sstevel@tonic-gate }
328