1 /* See LICENSE for licence details. */
14 #include <sys/ioctl.h>
15 #include <sys/select.h>
18 #include <sys/types.h>
22 #include <X11/Xatom.h>
24 #include <X11/Xutil.h>
25 #include <X11/cursorfont.h>
26 #include <X11/keysym.h>
27 #include <X11/Xft/Xft.h>
28 #include <fontconfig/fontconfig.h>
32 #define Draw XftDraw *
33 #define Colour XftColor
34 #define Colourmap Colormap
38 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
40 #elif defined(__FreeBSD__) || defined(__DragonFly__)
45 "st " VERSION " (c) 2010-2013 st engineers\n" \
46 "usage: st [-v] [-c class] [-f font] [-g geometry] [-o file]" \
47 " [-t title] [-w windowid] [-e command ...]\n"
50 #define XEMBED_FOCUS_IN 4
51 #define XEMBED_FOCUS_OUT 5
55 #define ESC_BUF_SIZ (128*UTF_SIZ)
56 #define ESC_ARG_SIZ 16
57 #define STR_BUF_SIZ ESC_BUF_SIZ
58 #define STR_ARG_SIZ ESC_ARG_SIZ
59 #define DRAW_BUF_SIZ 20*1024
60 #define XK_ANY_MOD UINT_MAX
62 #define XK_SWITCH_MOD (1<<13)
64 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
67 #define SERRNO strerror(errno)
68 #define MIN(a, b) ((a) < (b) ? (a) : (b))
69 #define MAX(a, b) ((a) < (b) ? (b) : (a))
70 #define LEN(a) (sizeof(a) / sizeof(a[0]))
71 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
72 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
73 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
74 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
75 #define IS_SET(flag) ((term.mode & (flag)) != 0)
76 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
78 #define VT102ID "\033[?6c"
80 enum glyph_attribute {
90 enum cursor_movement {
113 MODE_MOUSEMOTION = 64,
119 MODE_APPCURSOR = 2048,
120 MODE_MOUSESGR = 4096,
126 ESC_STR = 4, /* DSC, OSC, PM, APC */
128 ESC_STR_END = 16, /* a final string was encountered */
129 ESC_TEST = 32, /* Enter in test mode */
138 enum selection_type {
145 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
147 typedef unsigned char uchar;
148 typedef unsigned int uint;
149 typedef unsigned long ulong;
150 typedef unsigned short ushort;
153 char c[UTF_SIZ]; /* character code */
154 uchar mode; /* attribute flags */
155 ushort fg; /* foreground */
156 ushort bg; /* background */
157 uchar state; /* state flags */
163 Glyph attr; /* current char attributes */
169 /* CSI Escape sequence structs */
170 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
172 char buf[ESC_BUF_SIZ]; /* raw string */
173 int len; /* raw string length */
175 int arg[ESC_ARG_SIZ];
176 int narg; /* nb of args */
180 /* STR Escape sequence structs */
181 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
183 char type; /* ESC type ... */
184 char buf[STR_BUF_SIZ]; /* raw string */
185 int len; /* raw string length */
186 char *args[STR_ARG_SIZ];
187 int narg; /* nb of args */
190 /* Internal representation of the screen */
192 int row; /* nb row */
193 int col; /* nb col */
194 Line *line; /* screen */
195 Line *alt; /* alternate screen */
196 bool *dirty; /* dirtyness of lines */
197 TCursor c; /* cursor */
198 int top; /* top scroll limit */
199 int bot; /* bottom scroll limit */
200 int mode; /* terminal mode flags */
201 int esc; /* escape state flags */
202 bool numlock; /* lock numbers in keyboard */
206 /* Purely graphic info */
212 Atom xembed, wmdeletewin;
218 bool isfixed; /* is fixed geometry? */
219 int fx, fy, fw, fh; /* fixed geometry */
220 int tw, th; /* tty width and height */
221 int w, h; /* window width and height */
222 int ch; /* char height */
223 int cw; /* char width */
224 char state; /* focus, redraw, visible */
231 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
232 signed char appkey; /* application keypad */
233 signed char appcursor; /* application cursor */
234 signed char crlf; /* crlf mode */
237 /* TODO: use better name for vars... */
249 struct timeval tclick1;
250 struct timeval tclick2;
263 void (*func)(const Arg *);
267 /* function definitions used in config.h */
268 static void clippaste(const Arg *);
269 static void numlock(const Arg *);
270 static void selpaste(const Arg *);
271 static void xzoom(const Arg *);
273 /* Config.h for applying patches and the configuration. */
289 /* Drawing Context */
291 Colour col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
292 Font font, bfont, ifont, ibfont;
296 static void die(const char *, ...);
297 static void draw(void);
298 static void redraw(int);
299 static void drawregion(int, int, int, int);
300 static void execsh(void);
301 static void sigchld(int);
302 static void run(void);
304 static void csidump(void);
305 static void csihandle(void);
306 static void csiparse(void);
307 static void csireset(void);
308 static void strdump(void);
309 static void strhandle(void);
310 static void strparse(void);
311 static void strreset(void);
313 static void tclearregion(int, int, int, int, int);
314 static void tcursor(int);
315 static void tdeletechar(int);
316 static void tdeleteline(int);
317 static void tinsertblank(int);
318 static void tinsertblankline(int);
319 static void tmoveto(int, int);
320 static void tmoveato(int x, int y);
321 static void tnew(int, int);
322 static void tnewline(int);
323 static void tputtab(bool);
324 static void tputc(char *, int);
325 static void treset(void);
326 static int tresize(int, int);
327 static void tscrollup(int, int);
328 static void tscrolldown(int, int);
329 static void tsetattr(int*, int);
330 static void tsetchar(char *, Glyph *, int, int);
331 static void tsetscroll(int, int);
332 static void tswapscreen(void);
333 static void tsetdirt(int, int);
334 static void tsetmode(bool, bool, int *, int);
335 static void tfulldirt(void);
336 static void techo(char *, int);
338 static inline bool match(uint, uint);
339 static void ttynew(void);
340 static void ttyread(void);
341 static void ttyresize(void);
342 static void ttywrite(const char *, size_t);
344 static void xdraws(char *, Glyph, int, int, int, int);
345 static void xhints(void);
346 static void xclear(int, int, int, int);
347 static void xdrawcursor(void);
348 static void xinit(void);
349 static void xloadcols(void);
350 static int xsetcolorname(int, const char *);
351 static int xloadfont(Font *, FcPattern *);
352 static void xloadfonts(char *, int);
353 static void xsettitle(char *);
354 static void xresettitle(void);
355 static void xseturgency(int);
356 static void xsetsel(char*);
357 static void xtermclear(int, int, int, int);
358 static void xunloadfonts(void);
359 static void xresize(int, int);
361 static void expose(XEvent *);
362 static void visibility(XEvent *);
363 static void unmap(XEvent *);
364 static char *kmap(KeySym, uint);
365 static void kpress(XEvent *);
366 static void cmessage(XEvent *);
367 static void cresize(int, int);
368 static void resize(XEvent *);
369 static void focus(XEvent *);
370 static void brelease(XEvent *);
371 static void bpress(XEvent *);
372 static void bmotion(XEvent *);
373 static void selnotify(XEvent *);
374 static void selclear(XEvent *);
375 static void selrequest(XEvent *);
377 static void selinit(void);
378 static inline bool selected(int, int);
379 static void selcopy(void);
380 static void selscroll(int, int);
382 static int utf8decode(char *, long *);
383 static int utf8encode(long *, char *);
384 static int utf8size(char *);
385 static int isfullutf8(char *, int);
387 static ssize_t xwrite(int, char *, size_t);
388 static void *xmalloc(size_t);
389 static void *xrealloc(void *, size_t);
390 static void *xcalloc(size_t, size_t);
392 static void (*handler[LASTEvent])(XEvent *) = {
394 [ClientMessage] = cmessage,
395 [ConfigureNotify] = resize,
396 [VisibilityNotify] = visibility,
397 [UnmapNotify] = unmap,
401 [MotionNotify] = bmotion,
402 [ButtonPress] = bpress,
403 [ButtonRelease] = brelease,
404 [SelectionClear] = selclear,
405 [SelectionNotify] = selnotify,
406 [SelectionRequest] = selrequest,
413 static CSIEscape csiescseq;
414 static STREscape strescseq;
417 static Selection sel;
418 static int iofd = -1;
419 static char **opt_cmd = NULL;
420 static char *opt_io = NULL;
421 static char *opt_title = NULL;
422 static char *opt_embed = NULL;
423 static char *opt_class = NULL;
424 static char *opt_font = NULL;
426 static char *usedfont = NULL;
427 static int usedfontsize = 0;
429 /* Font Ring Cache */
444 * Fontcache is a ring buffer, with frccur as current position and frclen as
445 * the current length of used elements.
448 static Fontcache frc[1024];
449 static int frccur = -1, frclen = 0;
452 xwrite(int fd, char *s, size_t len) {
456 ssize_t r = write(fd, s, len);
466 xmalloc(size_t len) {
467 void *p = malloc(len);
470 die("Out of memory\n");
476 xrealloc(void *p, size_t len) {
477 if((p = realloc(p, len)) == NULL)
478 die("Out of memory\n");
484 xcalloc(size_t nmemb, size_t size) {
485 void *p = calloc(nmemb, size);
488 die("Out of memory\n");
494 utf8decode(char *s, long *u) {
500 if(~c & B7) { /* 0xxxxxxx */
503 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
504 *u = c&(B4|B3|B2|B1|B0);
506 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
507 *u = c&(B3|B2|B1|B0);
509 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
516 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
518 if((c & (B7|B6)) != B7) /* 10xxxxxx */
521 *u |= c & (B5|B4|B3|B2|B1|B0);
524 if((n == 1 && *u < 0x80) ||
525 (n == 2 && *u < 0x800) ||
526 (n == 3 && *u < 0x10000) ||
527 (*u >= 0xD800 && *u <= 0xDFFF)) {
539 utf8encode(long *u, char *s) {
547 *sp = uc; /* 0xxxxxxx */
549 } else if(*u < 0x800) {
550 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
552 } else if(uc < 0x10000) {
553 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
555 } else if(uc <= 0x10FFFF) {
556 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
562 for(i=n,++sp; i>0; --i,++sp)
563 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
575 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
576 UTF-8 otherwise return 0 */
578 isfullutf8(char *s, int b) {
586 } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
588 } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
590 ((b == 2) && (*c2&(B7|B6)) == B7))) {
592 } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
594 ((b == 2) && (*c2&(B7|B6)) == B7) ||
595 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
608 } else if((c&(B7|B6|B5)) == (B7|B6)) {
610 } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
619 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
620 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
624 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
625 if(sel.xtarget == None)
626 sel.xtarget = XA_STRING;
634 return LIMIT(x, 0, term.col-1);
642 return LIMIT(y, 0, term.row-1);
646 selected(int x, int y) {
649 if(sel.ey == y && sel.by == y) {
650 bx = MIN(sel.bx, sel.ex);
651 ex = MAX(sel.bx, sel.ex);
653 return BETWEEN(x, bx, ex);
658 return ((sel.b.y < y && y < sel.e.y)
659 || (y == sel.e.y && x <= sel.e.x))
660 || (y == sel.b.y && x >= sel.b.x
661 && (x <= sel.e.x || sel.b.y != sel.e.y));
662 case SEL_RECTANGULAR:
663 return ((sel.b.y <= y && y <= sel.e.y)
664 && (sel.b.x <= x && x <= sel.e.x));
669 getbuttoninfo(XEvent *e) {
671 uint state = e->xbutton.state &~Button1Mask;
673 sel.alt = IS_SET(MODE_ALTSCREEN);
675 sel.ex = x2col(e->xbutton.x);
676 sel.ey = y2row(e->xbutton.y);
678 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
679 sel.b.y = MIN(sel.by, sel.ey);
680 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
681 sel.e.y = MAX(sel.by, sel.ey);
683 sel.type = SEL_REGULAR;
684 for(type = 1; type < LEN(selmasks); ++type) {
685 if(match(selmasks[type], state)) {
693 mousereport(XEvent *e) {
694 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
695 button = e->xbutton.button, state = e->xbutton.state,
698 static int ob, ox, oy;
701 if(e->xbutton.type == MotionNotify) {
702 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
706 } else if(!IS_SET(MODE_MOUSESGR)
707 && (e->xbutton.type == ButtonRelease
708 || button == AnyButton)) {
714 if(e->xbutton.type == ButtonPress) {
720 button += (state & ShiftMask ? 4 : 0)
721 + (state & Mod4Mask ? 8 : 0)
722 + (state & ControlMask ? 16 : 0);
725 if(IS_SET(MODE_MOUSESGR)) {
726 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
728 e->xbutton.type == ButtonRelease ? 'm' : 'M');
729 } else if(x < 223 && y < 223) {
730 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
731 32+button, 32+x+1, 32+y+1);
741 if(IS_SET(MODE_MOUSE)) {
743 } else if(e->xbutton.button == Button1) {
746 tsetdirt(sel.b.y, sel.e.y);
750 sel.type = SEL_REGULAR;
751 sel.ex = sel.bx = x2col(e->xbutton.x);
752 sel.ey = sel.by = y2row(e->xbutton.y);
753 } else if(e->xbutton.button == Button4) {
755 } else if(e->xbutton.button == Button5) {
763 int x, y, bufsize, is_selected = 0, size;
769 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
770 ptr = str = xmalloc(bufsize);
772 /* append every set & selected glyph to the selection */
773 for(y = sel.b.y; y < sel.e.y + 1; y++) {
775 gp = &term.line[y][0];
776 last = gp + term.col;
778 while(--last >= gp && !(last->state & GLYPH_SET))
781 for(x = 0; gp <= last; x++, ++gp) {
782 if(!selected(x, y)) {
788 p = (gp->state & GLYPH_SET) ? gp->c : " ";
790 memcpy(ptr, p, size);
793 /* \n at the end of every selected line except for the last one */
794 if(is_selected && y < sel.e.y)
803 selnotify(XEvent *e) {
804 ulong nitems, ofs, rem;
811 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
812 False, AnyPropertyType, &type, &format,
813 &nitems, &rem, &data)) {
814 fprintf(stderr, "Clipboard allocation failed\n");
817 ttywrite((const char *) data, nitems * format / 8);
819 /* number of 32-bit chunks returned */
820 ofs += nitems * format / 32;
825 selpaste(const Arg *dummy) {
826 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
827 xw.win, CurrentTime);
831 clippaste(const Arg *dummy) {
834 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
835 XConvertSelection(xw.dpy, clipboard, sel.xtarget, XA_PRIMARY,
836 xw.win, CurrentTime);
840 selclear(XEvent *e) {
844 tsetdirt(sel.b.y, sel.e.y);
848 selrequest(XEvent *e) {
849 XSelectionRequestEvent *xsre;
851 Atom xa_targets, string;
853 xsre = (XSelectionRequestEvent *) e;
854 xev.type = SelectionNotify;
855 xev.requestor = xsre->requestor;
856 xev.selection = xsre->selection;
857 xev.target = xsre->target;
858 xev.time = xsre->time;
862 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
863 if(xsre->target == xa_targets) {
864 /* respond with the supported type */
865 string = sel.xtarget;
866 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
867 XA_ATOM, 32, PropModeReplace,
868 (uchar *) &string, 1);
869 xev.property = xsre->property;
870 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
871 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
872 xsre->target, 8, PropModeReplace,
873 (uchar *) sel.clip, strlen(sel.clip));
874 xev.property = xsre->property;
877 /* all done, send a notification to the listener */
878 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
879 fprintf(stderr, "Error sending SelectionNotify event\n");
884 /* register the selection for both the clipboard and the primary */
890 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
892 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
893 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
897 brelease(XEvent *e) {
900 if(IS_SET(MODE_MOUSE)) {
905 if(e->xbutton.button == Button2) {
907 } else if(e->xbutton.button == Button1) {
910 term.dirty[sel.ey] = 1;
911 if(sel.bx == sel.ex && sel.by == sel.ey) {
913 gettimeofday(&now, NULL);
915 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
916 /* triple click on the line */
917 sel.b.x = sel.bx = 0;
918 sel.e.x = sel.ex = term.col;
919 sel.b.y = sel.e.y = sel.ey;
921 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
922 /* double click to select word */
924 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
925 term.line[sel.ey][sel.bx-1].c[0] != ' ') {
929 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
930 term.line[sel.ey][sel.ex+1].c[0] != ' ') {
934 sel.b.y = sel.e.y = sel.ey;
942 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
943 gettimeofday(&sel.tclick1, NULL);
948 int oldey, oldex, oldsby, oldsey;
950 if(IS_SET(MODE_MOUSE)) {
964 if(oldey != sel.ey || oldex != sel.ex) {
965 tsetdirt(MIN(sel.b.y, oldsby), MAX(sel.e.y, oldsey));
970 die(const char *errstr, ...) {
973 va_start(ap, errstr);
974 vfprintf(stderr, errstr, ap);
982 char *envshell = getenv("SHELL");
983 const struct passwd *pass = getpwuid(getuid());
984 char buf[sizeof(long) * 8 + 1];
991 setenv("LOGNAME", pass->pw_name, 1);
992 setenv("USER", pass->pw_name, 1);
993 setenv("SHELL", pass->pw_shell, 0);
994 setenv("HOME", pass->pw_dir, 0);
997 snprintf(buf, sizeof(buf), "%lu", xw.win);
998 setenv("WINDOWID", buf, 1);
1000 signal(SIGCHLD, SIG_DFL);
1001 signal(SIGHUP, SIG_DFL);
1002 signal(SIGINT, SIG_DFL);
1003 signal(SIGQUIT, SIG_DFL);
1004 signal(SIGTERM, SIG_DFL);
1005 signal(SIGALRM, SIG_DFL);
1007 DEFAULT(envshell, shell);
1008 setenv("TERM", termname, 1);
1009 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
1010 execvp(args[0], args);
1018 if(waitpid(pid, &stat, 0) < 0)
1019 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
1021 if(WIFEXITED(stat)) {
1022 exit(WEXITSTATUS(stat));
1031 struct winsize w = {term.row, term.col, 0, 0};
1033 /* seems to work fine on linux, openbsd and freebsd */
1034 if(openpty(&m, &s, NULL, NULL, &w) < 0)
1035 die("openpty failed: %s\n", SERRNO);
1037 switch(pid = fork()) {
1039 die("fork failed\n");
1042 setsid(); /* create a new process group */
1043 dup2(s, STDIN_FILENO);
1044 dup2(s, STDOUT_FILENO);
1045 dup2(s, STDERR_FILENO);
1046 if(ioctl(s, TIOCSCTTY, NULL) < 0)
1047 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
1055 signal(SIGCHLD, sigchld);
1057 iofd = (!strcmp(opt_io, "-")) ?
1059 open(opt_io, O_WRONLY | O_CREAT, 0666);
1061 fprintf(stderr, "Error opening %s:%s\n",
1062 opt_io, strerror(errno));
1072 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
1074 fprintf(stderr, "\n");
1079 static char buf[BUFSIZ];
1080 static int buflen = 0;
1083 int charsize; /* size of utf8 char in bytes */
1087 /* append read bytes to unprocessed bytes */
1088 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1089 die("Couldn't read from shell: %s\n", SERRNO);
1091 /* process every complete utf8 char */
1094 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
1095 charsize = utf8decode(ptr, &utf8c);
1096 utf8encode(&utf8c, s);
1102 /* keep any uncomplete utf8 char for the next call */
1103 memmove(buf, ptr, buflen);
1107 ttywrite(const char *s, size_t n) {
1108 if(write(cmdfd, s, n) == -1)
1109 die("write error on tty: %s\n", SERRNO);
1116 w.ws_row = term.row;
1117 w.ws_col = term.col;
1118 w.ws_xpixel = xw.tw;
1119 w.ws_ypixel = xw.th;
1120 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1121 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
1125 tsetdirt(int top, int bot) {
1128 LIMIT(top, 0, term.row-1);
1129 LIMIT(bot, 0, term.row-1);
1131 for(i = top; i <= bot; i++)
1137 tsetdirt(0, term.row-1);
1144 if(mode == CURSOR_SAVE) {
1146 } else if(mode == CURSOR_LOAD) {
1156 term.c = (TCursor){{
1160 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1162 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1163 for(i = tabspaces; i < term.col; i += tabspaces)
1166 term.bot = term.row - 1;
1167 term.mode = MODE_WRAP;
1169 tclearregion(0, 0, term.col-1, term.row-1, 0);
1171 tcursor(CURSOR_SAVE);
1175 tnew(int col, int row) {
1176 /* set screen size */
1179 term.line = xmalloc(term.row * sizeof(Line));
1180 term.alt = xmalloc(term.row * sizeof(Line));
1181 term.dirty = xmalloc(term.row * sizeof(*term.dirty));
1182 term.tabs = xmalloc(term.col * sizeof(*term.tabs));
1184 for(row = 0; row < term.row; row++) {
1185 term.line[row] = xmalloc(term.col * sizeof(Glyph));
1186 term.alt [row] = xmalloc(term.col * sizeof(Glyph));
1187 term.dirty[row] = 0;
1191 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1198 Line *tmp = term.line;
1200 term.line = term.alt;
1202 term.mode ^= MODE_ALTSCREEN;
1207 tscrolldown(int orig, int n) {
1211 LIMIT(n, 0, term.bot-orig+1);
1213 tclearregion(0, term.bot-n+1, term.col-1, term.bot, 0);
1215 for(i = term.bot; i >= orig+n; i--) {
1216 temp = term.line[i];
1217 term.line[i] = term.line[i-n];
1218 term.line[i-n] = temp;
1221 term.dirty[i-n] = 1;
1228 tscrollup(int orig, int n) {
1231 LIMIT(n, 0, term.bot-orig+1);
1233 tclearregion(0, orig, term.col-1, orig+n-1, 0);
1235 for(i = orig; i <= term.bot-n; i++) {
1236 temp = term.line[i];
1237 term.line[i] = term.line[i+n];
1238 term.line[i+n] = temp;
1241 term.dirty[i+n] = 1;
1244 selscroll(orig, -n);
1248 selscroll(int orig, int n) {
1252 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1253 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1259 if(sel.by < term.top) {
1263 if(sel.ey > term.bot) {
1268 case SEL_RECTANGULAR:
1269 if(sel.by < term.top)
1271 if(sel.ey > term.bot)
1275 sel.b.y = sel.by, sel.b.x = sel.bx;
1276 sel.e.y = sel.ey, sel.e.x = sel.ex;
1281 tnewline(int first_col) {
1285 tscrollup(term.top, 1);
1289 tmoveto(first_col ? 0 : term.c.x, y);
1294 char *p = csiescseq.buf, *np;
1303 csiescseq.buf[csiescseq.len] = '\0';
1304 while(p < csiescseq.buf+csiescseq.len) {
1306 v = strtol(p, &np, 10);
1309 if(v == LONG_MAX || v == LONG_MIN)
1311 csiescseq.arg[csiescseq.narg++] = v;
1313 if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1317 csiescseq.mode = *p;
1320 /* for absolute user moves, when decom is set */
1322 tmoveato(int x, int y) {
1323 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1327 tmoveto(int x, int y) {
1330 if(term.c.state & CURSOR_ORIGIN) {
1335 maxy = term.row - 1;
1337 LIMIT(x, 0, term.col-1);
1338 LIMIT(y, miny, maxy);
1339 term.c.state &= ~CURSOR_WRAPNEXT;
1345 tsetchar(char *c, Glyph *attr, int x, int y) {
1346 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1347 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1348 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1349 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1350 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1351 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1352 "", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1353 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1354 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1358 * The table is proudly stolen from rxvt.
1360 if(attr->mode & ATTR_GFX) {
1361 if(c[0] >= 0x41 && c[0] <= 0x7e
1362 && vt100_0[c[0] - 0x41]) {
1363 c = vt100_0[c[0] - 0x41];
1368 term.line[y][x] = *attr;
1369 memcpy(term.line[y][x].c, c, UTF_SIZ);
1370 term.line[y][x].state |= GLYPH_SET;
1374 tclearregion(int x1, int y1, int x2, int y2, int bce) {
1378 temp = x1, x1 = x2, x2 = temp;
1380 temp = y1, y1 = y2, y2 = temp;
1382 LIMIT(x1, 0, term.col-1);
1383 LIMIT(x2, 0, term.col-1);
1384 LIMIT(y1, 0, term.row-1);
1385 LIMIT(y2, 0, term.row-1);
1387 for(y = y1; y <= y2; y++) {
1389 for(x = x1; x <= x2; x++) {
1391 term.line[y][x] = term.c.attr;
1392 memcpy(term.line[y][x].c, " ", 2);
1393 term.line[y][x].state |= GLYPH_SET;
1395 term.line[y][x].state = 0;
1402 tdeletechar(int n) {
1403 int src = term.c.x + n;
1405 int size = term.col - src;
1407 term.dirty[term.c.y] = 1;
1409 if(src >= term.col) {
1410 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y, 0);
1414 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1415 size * sizeof(Glyph));
1416 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y, 0);
1420 tinsertblank(int n) {
1423 int size = term.col - dst;
1425 term.dirty[term.c.y] = 1;
1427 if(dst >= term.col) {
1428 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y, 0);
1432 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1433 size * sizeof(Glyph));
1434 tclearregion(src, term.c.y, dst - 1, term.c.y, 0);
1438 tinsertblankline(int n) {
1439 if(term.c.y < term.top || term.c.y > term.bot)
1442 tscrolldown(term.c.y, n);
1446 tdeleteline(int n) {
1447 if(term.c.y < term.top || term.c.y > term.bot)
1450 tscrollup(term.c.y, n);
1454 tsetattr(int *attr, int l) {
1457 for(i = 0; i < l; i++) {
1460 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
1461 | ATTR_ITALIC | ATTR_BLINK);
1462 term.c.attr.fg = defaultfg;
1463 term.c.attr.bg = defaultbg;
1466 term.c.attr.mode |= ATTR_BOLD;
1469 term.c.attr.mode |= ATTR_ITALIC;
1472 term.c.attr.mode |= ATTR_UNDERLINE;
1474 case 5: /* slow blink */
1475 case 6: /* rapid blink */
1476 term.c.attr.mode |= ATTR_BLINK;
1479 term.c.attr.mode |= ATTR_REVERSE;
1483 term.c.attr.mode &= ~ATTR_BOLD;
1486 term.c.attr.mode &= ~ATTR_ITALIC;
1489 term.c.attr.mode &= ~ATTR_UNDERLINE;
1493 term.c.attr.mode &= ~ATTR_BLINK;
1496 term.c.attr.mode &= ~ATTR_REVERSE;
1499 if(i + 2 < l && attr[i + 1] == 5) {
1501 if(BETWEEN(attr[i], 0, 255)) {
1502 term.c.attr.fg = attr[i];
1505 "erresc: bad fgcolor %d\n",
1510 "erresc(38): gfx attr %d unknown\n",
1515 term.c.attr.fg = defaultfg;
1518 if(i + 2 < l && attr[i + 1] == 5) {
1520 if(BETWEEN(attr[i], 0, 255)) {
1521 term.c.attr.bg = attr[i];
1524 "erresc: bad bgcolor %d\n",
1529 "erresc(48): gfx attr %d unknown\n",
1534 term.c.attr.bg = defaultbg;
1537 if(BETWEEN(attr[i], 30, 37)) {
1538 term.c.attr.fg = attr[i] - 30;
1539 } else if(BETWEEN(attr[i], 40, 47)) {
1540 term.c.attr.bg = attr[i] - 40;
1541 } else if(BETWEEN(attr[i], 90, 97)) {
1542 term.c.attr.fg = attr[i] - 90 + 8;
1543 } else if(BETWEEN(attr[i], 100, 107)) {
1544 term.c.attr.bg = attr[i] - 100 + 8;
1547 "erresc(default): gfx attr %d unknown\n",
1548 attr[i]), csidump();
1556 tsetscroll(int t, int b) {
1559 LIMIT(t, 0, term.row-1);
1560 LIMIT(b, 0, term.row-1);
1570 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1573 tsetmode(bool priv, bool set, int *args, int narg) {
1577 for(lim = args + narg; args < lim; ++args) {
1581 case 1: /* DECCKM -- Cursor key */
1582 MODBIT(term.mode, set, MODE_APPCURSOR);
1584 case 5: /* DECSCNM -- Reverse video */
1586 MODBIT(term.mode, set, MODE_REVERSE);
1587 if(mode != term.mode)
1588 redraw(REDRAW_TIMEOUT);
1590 case 6: /* DECOM -- Origin */
1591 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1594 case 7: /* DECAWM -- Auto wrap */
1595 MODBIT(term.mode, set, MODE_WRAP);
1597 case 0: /* Error (IGNORED) */
1598 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1599 case 3: /* DECCOLM -- Column (IGNORED) */
1600 case 4: /* DECSCLM -- Scroll (IGNORED) */
1601 case 8: /* DECARM -- Auto repeat (IGNORED) */
1602 case 18: /* DECPFF -- Printer feed (IGNORED) */
1603 case 19: /* DECPEX -- Printer extent (IGNORED) */
1604 case 42: /* DECNRCM -- National characters (IGNORED) */
1605 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1607 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1608 MODBIT(term.mode, !set, MODE_HIDE);
1610 case 1000: /* 1000,1002: enable xterm mouse report */
1611 MODBIT(term.mode, set, MODE_MOUSEBTN);
1612 MODBIT(term.mode, 0, MODE_MOUSEMOTION);
1615 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1616 MODBIT(term.mode, 0, MODE_MOUSEBTN);
1619 MODBIT(term.mode, set, MODE_MOUSESGR);
1621 case 1049: /* = 1047 and 1048 */
1624 alt = IS_SET(MODE_ALTSCREEN);
1626 tclearregion(0, 0, term.col-1,
1629 if(set ^ alt) /* set is always 1 or 0 */
1636 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1640 "erresc: unknown private set/reset mode %d\n",
1646 case 0: /* Error (IGNORED) */
1648 case 2: /* KAM -- keyboard action */
1649 MODBIT(term.mode, set, MODE_KBDLOCK);
1651 case 4: /* IRM -- Insertion-replacement */
1652 MODBIT(term.mode, set, MODE_INSERT);
1654 case 12: /* SRM -- Send/Receive */
1655 MODBIT(term.mode, !set, MODE_ECHO);
1657 case 20: /* LNM -- Linefeed/new line */
1658 MODBIT(term.mode, set, MODE_CRLF);
1662 "erresc: unknown set/reset mode %d\n",
1674 switch(csiescseq.mode) {
1677 fprintf(stderr, "erresc: unknown csi ");
1681 case '@': /* ICH -- Insert <n> blank char */
1682 DEFAULT(csiescseq.arg[0], 1);
1683 tinsertblank(csiescseq.arg[0]);
1685 case 'A': /* CUU -- Cursor <n> Up */
1686 DEFAULT(csiescseq.arg[0], 1);
1687 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1689 case 'B': /* CUD -- Cursor <n> Down */
1690 case 'e': /* VPR --Cursor <n> Down */
1691 DEFAULT(csiescseq.arg[0], 1);
1692 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1694 case 'c': /* DA -- Device Attributes */
1695 if(csiescseq.arg[0] == 0)
1696 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1698 case 'C': /* CUF -- Cursor <n> Forward */
1699 case 'a': /* HPR -- Cursor <n> Forward */
1700 DEFAULT(csiescseq.arg[0], 1);
1701 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1703 case 'D': /* CUB -- Cursor <n> Backward */
1704 DEFAULT(csiescseq.arg[0], 1);
1705 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1707 case 'E': /* CNL -- Cursor <n> Down and first col */
1708 DEFAULT(csiescseq.arg[0], 1);
1709 tmoveto(0, term.c.y+csiescseq.arg[0]);
1711 case 'F': /* CPL -- Cursor <n> Up and first col */
1712 DEFAULT(csiescseq.arg[0], 1);
1713 tmoveto(0, term.c.y-csiescseq.arg[0]);
1715 case 'g': /* TBC -- Tabulation clear */
1716 switch(csiescseq.arg[0]) {
1717 case 0: /* clear current tab stop */
1718 term.tabs[term.c.x] = 0;
1720 case 3: /* clear all the tabs */
1721 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1727 case 'G': /* CHA -- Move to <col> */
1729 DEFAULT(csiescseq.arg[0], 1);
1730 tmoveto(csiescseq.arg[0]-1, term.c.y);
1732 case 'H': /* CUP -- Move to <row> <col> */
1734 DEFAULT(csiescseq.arg[0], 1);
1735 DEFAULT(csiescseq.arg[1], 1);
1736 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1738 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1739 DEFAULT(csiescseq.arg[0], 1);
1740 while(csiescseq.arg[0]--)
1743 case 'J': /* ED -- Clear screen */
1745 switch(csiescseq.arg[0]) {
1747 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y, 1);
1748 if(term.c.y < term.row-1) {
1749 tclearregion(0, term.c.y+1, term.col-1,
1755 tclearregion(0, 0, term.col-1, term.c.y-1, 1);
1756 tclearregion(0, term.c.y, term.c.x, term.c.y, 1);
1759 tclearregion(0, 0, term.col-1, term.row-1, 1);
1765 case 'K': /* EL -- Clear line */
1766 switch(csiescseq.arg[0]) {
1768 tclearregion(term.c.x, term.c.y, term.col-1,
1772 tclearregion(0, term.c.y, term.c.x, term.c.y, 1);
1775 tclearregion(0, term.c.y, term.col-1, term.c.y, 1);
1779 case 'S': /* SU -- Scroll <n> line up */
1780 DEFAULT(csiescseq.arg[0], 1);
1781 tscrollup(term.top, csiescseq.arg[0]);
1783 case 'T': /* SD -- Scroll <n> line down */
1784 DEFAULT(csiescseq.arg[0], 1);
1785 tscrolldown(term.top, csiescseq.arg[0]);
1787 case 'L': /* IL -- Insert <n> blank lines */
1788 DEFAULT(csiescseq.arg[0], 1);
1789 tinsertblankline(csiescseq.arg[0]);
1791 case 'l': /* RM -- Reset Mode */
1792 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1794 case 'M': /* DL -- Delete <n> lines */
1795 DEFAULT(csiescseq.arg[0], 1);
1796 tdeleteline(csiescseq.arg[0]);
1798 case 'X': /* ECH -- Erase <n> char */
1799 DEFAULT(csiescseq.arg[0], 1);
1800 tclearregion(term.c.x, term.c.y,
1801 term.c.x + csiescseq.arg[0] - 1, term.c.y, 1);
1803 case 'P': /* DCH -- Delete <n> char */
1804 DEFAULT(csiescseq.arg[0], 1);
1805 tdeletechar(csiescseq.arg[0]);
1807 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1808 DEFAULT(csiescseq.arg[0], 1);
1809 while(csiescseq.arg[0]--)
1812 case 'd': /* VPA -- Move to <row> */
1813 DEFAULT(csiescseq.arg[0], 1);
1814 tmoveato(term.c.x, csiescseq.arg[0]-1);
1816 case 'h': /* SM -- Set terminal mode */
1817 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1819 case 'm': /* SGR -- Terminal attribute (color) */
1820 tsetattr(csiescseq.arg, csiescseq.narg);
1822 case 'r': /* DECSTBM -- Set Scrolling Region */
1823 if(csiescseq.priv) {
1826 DEFAULT(csiescseq.arg[0], 1);
1827 DEFAULT(csiescseq.arg[1], term.row);
1828 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1832 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1833 tcursor(CURSOR_SAVE);
1835 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1836 tcursor(CURSOR_LOAD);
1847 for(i = 0; i < csiescseq.len; i++) {
1848 c = csiescseq.buf[i] & 0xff;
1851 } else if(c == '\n') {
1853 } else if(c == '\r') {
1855 } else if(c == 0x1b) {
1858 printf("(%02x)", c);
1866 memset(&csiescseq, 0, sizeof(csiescseq));
1875 narg = strescseq.narg;
1877 switch(strescseq.type) {
1878 case ']': /* OSC -- Operating System Command */
1879 switch(i = atoi(strescseq.args[0])) {
1884 xsettitle(strescseq.args[1]);
1886 case 4: /* color set */
1889 p = strescseq.args[2];
1891 case 104: /* color reset, here p = NULL */
1892 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
1893 if (!xsetcolorname(j, p)) {
1894 fprintf(stderr, "erresc: invalid color %s\n", p);
1897 * TODO if defaultbg color is changed, borders
1904 fprintf(stderr, "erresc: unknown str ");
1909 case 'k': /* old title set compatibility */
1910 xsettitle(strescseq.args[0]);
1912 case 'P': /* DSC -- Device Control String */
1913 case '_': /* APC -- Application Program Command */
1914 case '^': /* PM -- Privacy Message */
1916 fprintf(stderr, "erresc: unknown str ");
1925 char *p = strescseq.buf;
1928 strescseq.buf[strescseq.len] = '\0';
1929 while(p && strescseq.narg < STR_ARG_SIZ)
1930 strescseq.args[strescseq.narg++] = strsep(&p, ";");
1938 printf("ESC%c", strescseq.type);
1939 for(i = 0; i < strescseq.len; i++) {
1940 c = strescseq.buf[i] & 0xff;
1943 } else if(isprint(c)) {
1945 } else if(c == '\n') {
1947 } else if(c == '\r') {
1949 } else if(c == 0x1b) {
1952 printf("(%02x)", c);
1960 memset(&strescseq, 0, sizeof(strescseq));
1964 tputtab(bool forward) {
1970 for(++x; x < term.col && !term.tabs[x]; ++x)
1975 for(--x; x > 0 && !term.tabs[x]; --x)
1978 tmoveto(x, term.c.y);
1982 techo(char *buf, int len) {
1983 for(; len > 0; buf++, len--) {
1986 if(c == '\033') { /* escape */
1989 } else if(c < '\x20') { /* control code */
1990 if(c != '\n' && c != '\r' && c != '\t') {
2004 tputc(char *c, int len) {
2006 bool control = ascii < '\x20' || ascii == 0177;
2009 if(xwrite(iofd, c, len) < 0) {
2010 fprintf(stderr, "Error writing in %s:%s\n",
2011 opt_io, strerror(errno));
2018 * STR sequences must be checked before anything else
2019 * because it can use some control codes as part of the sequence.
2021 if(term.esc & ESC_STR) {
2024 term.esc = ESC_START | ESC_STR_END;
2026 case '\a': /* backwards compatibility to xterm */
2031 if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
2032 memmove(&strescseq.buf[strescseq.len], c, len);
2033 strescseq.len += len;
2036 * Here is a bug in terminals. If the user never sends
2037 * some code to stop the str or esc command, then st
2038 * will stop responding. But this is better than
2039 * silently failing with unknown characters. At least
2040 * then users will report back.
2042 * In the case users ever get fixed, here is the code:
2054 * Actions of control codes must be performed as soon they arrive
2055 * because they can be embedded inside a control sequence, and
2056 * they must not cause conflicts with sequences.
2064 tmoveto(term.c.x-1, term.c.y);
2067 tmoveto(0, term.c.y);
2072 /* go to first col if the mode is set */
2073 tnewline(IS_SET(MODE_CRLF));
2075 case '\a': /* BEL */
2076 if(!(xw.state & WIN_FOCUSED))
2079 case '\033': /* ESC */
2081 term.esc = ESC_START;
2083 case '\016': /* SO */
2084 case '\017': /* SI */
2086 * Different charsets are hard to handle. Applications
2087 * should use the right alt charset escapes for the
2088 * only reason they still exist: line drawing. The
2089 * rest is incompatible history st should not support.
2092 case '\032': /* SUB */
2093 case '\030': /* CAN */
2096 case '\005': /* ENQ (IGNORED) */
2097 case '\000': /* NUL (IGNORED) */
2098 case '\021': /* XON (IGNORED) */
2099 case '\023': /* XOFF (IGNORED) */
2100 case 0177: /* DEL (IGNORED) */
2103 } else if(term.esc & ESC_START) {
2104 if(term.esc & ESC_CSI) {
2105 csiescseq.buf[csiescseq.len++] = ascii;
2106 if(BETWEEN(ascii, 0x40, 0x7E)
2107 || csiescseq.len >= \
2108 sizeof(csiescseq.buf)-1) {
2113 } else if(term.esc & ESC_STR_END) {
2117 } else if(term.esc & ESC_ALTCHARSET) {
2119 case '0': /* Line drawing set */
2120 term.c.attr.mode |= ATTR_GFX;
2122 case 'B': /* USASCII */
2123 term.c.attr.mode &= ~ATTR_GFX;
2125 case 'A': /* UK (IGNORED) */
2126 case '<': /* multinational charset (IGNORED) */
2127 case '5': /* Finnish (IGNORED) */
2128 case 'C': /* Finnish (IGNORED) */
2129 case 'K': /* German (IGNORED) */
2132 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2135 } else if(term.esc & ESC_TEST) {
2136 if(ascii == '8') { /* DEC screen alignment test. */
2137 char E[UTF_SIZ] = "E";
2140 for(x = 0; x < term.col; ++x) {
2141 for(y = 0; y < term.row; ++y)
2142 tsetchar(E, &term.c.attr, x, y);
2149 term.esc |= ESC_CSI;
2152 term.esc |= ESC_TEST;
2154 case 'P': /* DCS -- Device Control String */
2155 case '_': /* APC -- Application Program Command */
2156 case '^': /* PM -- Privacy Message */
2157 case ']': /* OSC -- Operating System Command */
2158 case 'k': /* old title set compatibility */
2160 strescseq.type = ascii;
2161 term.esc |= ESC_STR;
2163 case '(': /* set primary charset G0 */
2164 term.esc |= ESC_ALTCHARSET;
2166 case ')': /* set secondary charset G1 (IGNORED) */
2167 case '*': /* set tertiary charset G2 (IGNORED) */
2168 case '+': /* set quaternary charset G3 (IGNORED) */
2171 case 'D': /* IND -- Linefeed */
2172 if(term.c.y == term.bot) {
2173 tscrollup(term.top, 1);
2175 tmoveto(term.c.x, term.c.y+1);
2179 case 'E': /* NEL -- Next line */
2180 tnewline(1); /* always go to first col */
2183 case 'H': /* HTS -- Horizontal tab stop */
2184 term.tabs[term.c.x] = 1;
2187 case 'M': /* RI -- Reverse index */
2188 if(term.c.y == term.top) {
2189 tscrolldown(term.top, 1);
2191 tmoveto(term.c.x, term.c.y-1);
2195 case 'Z': /* DECID -- Identify Terminal */
2196 ttywrite(VT102ID, sizeof(VT102ID) - 1);
2199 case 'c': /* RIS -- Reset to inital state */
2204 case '=': /* DECPAM -- Application keypad */
2205 term.mode |= MODE_APPKEYPAD;
2208 case '>': /* DECPNM -- Normal keypad */
2209 term.mode &= ~MODE_APPKEYPAD;
2212 case '7': /* DECSC -- Save Cursor */
2213 tcursor(CURSOR_SAVE);
2216 case '8': /* DECRC -- Restore Cursor */
2217 tcursor(CURSOR_LOAD);
2220 case '\\': /* ST -- Stop */
2224 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2225 (uchar) ascii, isprint(ascii)? ascii:'.');
2230 * All characters which form part of a sequence are not
2236 * Display control codes only if we are in graphic mode
2238 if(control && !(term.c.attr.mode & ATTR_GFX))
2240 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
2242 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
2243 tnewline(1); /* always go to first col */
2245 if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col) {
2246 memmove(&term.line[term.c.y][term.c.x+1],
2247 &term.line[term.c.y][term.c.x],
2248 (term.col - term.c.x - 1) * sizeof(Glyph));
2251 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2252 if(term.c.x+1 < term.col) {
2253 tmoveto(term.c.x+1, term.c.y);
2255 term.c.state |= CURSOR_WRAPNEXT;
2260 tresize(int col, int row) {
2262 int minrow = MIN(row, term.row);
2263 int mincol = MIN(col, term.col);
2264 int slide = term.c.y - row + 1;
2267 if(col < 1 || row < 1)
2270 /* free unneeded rows */
2274 * slide screen to keep cursor where we expect it -
2275 * tscrollup would work here, but we can optimize to
2276 * memmove because we're freeing the earlier lines
2278 for(/* i = 0 */; i < slide; i++) {
2282 memmove(term.line, term.line + slide, row * sizeof(Line));
2283 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2285 for(i += row; i < term.row; i++) {
2290 /* resize to new height */
2291 term.line = xrealloc(term.line, row * sizeof(Line));
2292 term.alt = xrealloc(term.alt, row * sizeof(Line));
2293 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2294 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2296 /* resize each row to new width, zero-pad if needed */
2297 for(i = 0; i < minrow; i++) {
2299 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2300 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2301 for(x = mincol; x < col; x++) {
2302 term.line[i][x].state = 0;
2303 term.alt[i][x].state = 0;
2307 /* allocate any new rows */
2308 for(/* i == minrow */; i < row; i++) {
2310 term.line[i] = xcalloc(col, sizeof(Glyph));
2311 term.alt [i] = xcalloc(col, sizeof(Glyph));
2313 if(col > term.col) {
2314 bp = term.tabs + term.col;
2316 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2317 while(--bp > term.tabs && !*bp)
2319 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2322 /* update terminal size */
2325 /* reset scrolling region */
2326 tsetscroll(0, row-1);
2327 /* make use of the LIMIT in tmoveto */
2328 tmoveto(term.c.x, term.c.y);
2334 xresize(int col, int row) {
2335 xw.tw = MAX(1, col * xw.cw);
2336 xw.th = MAX(1, row * xw.ch);
2338 XFreePixmap(xw.dpy, xw.buf);
2339 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2340 DefaultDepth(xw.dpy, xw.scr));
2341 XSetForeground(xw.dpy, dc.gc, dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg].pixel);
2342 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
2344 XftDrawChange(xw.draw, xw.buf);
2347 static inline ushort
2348 sixd_to_16bit(int x) {
2349 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
2355 XRenderColor color = { .alpha = 0xffff };
2357 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2358 for(i = 0; i < LEN(colorname); i++) {
2361 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
2362 die("Could not allocate color '%s'\n", colorname[i]);
2366 /* load colors [16-255] ; same colors as xterm */
2367 for(i = 16, r = 0; r < 6; r++) {
2368 for(g = 0; g < 6; g++) {
2369 for(b = 0; b < 6; b++) {
2370 color.red = sixd_to_16bit(r);
2371 color.green = sixd_to_16bit(g);
2372 color.blue = sixd_to_16bit(b);
2373 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
2374 die("Could not allocate color %d\n", i);
2381 for(r = 0; r < 24; r++, i++) {
2382 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
2383 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color,
2385 die("Could not allocate color %d\n", i);
2391 xsetcolorname(int x, const char *name) {
2392 XRenderColor color = { .alpha = 0xffff };
2394 if (x < 0 || x > LEN(colorname))
2397 if(16 <= x && x < 16 + 216) {
2398 int r = (x - 16) / 36, g = ((x - 16) % 36) / 6, b = (x - 16) % 6;
2399 color.red = sixd_to_16bit(r);
2400 color.green = sixd_to_16bit(g);
2401 color.blue = sixd_to_16bit(b);
2402 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2403 return 0; /* something went wrong */
2406 } else if (16 + 216 <= x && x < 256) {
2407 color.red = color.green = color.blue = 0x0808 + 0x0a0a * (x - (16 + 216));
2408 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2409 return 0; /* something went wrong */
2413 name = colorname[x];
2416 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &colour))
2423 xtermclear(int col1, int row1, int col2, int row2) {
2424 XftDrawRect(xw.draw,
2425 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2426 borderpx + col1 * xw.cw,
2427 borderpx + row1 * xw.ch,
2428 (col2-col1+1) * xw.cw,
2429 (row2-row1+1) * xw.ch);
2433 * Absolute coordinates.
2436 xclear(int x1, int y1, int x2, int y2) {
2437 XftDrawRect(xw.draw,
2438 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
2439 x1, y1, x2-x1, y2-y1);
2444 XClassHint class = {opt_class ? opt_class : termname, termname};
2445 XWMHints wm = {.flags = InputHint, .input = 1};
2446 XSizeHints *sizeh = NULL;
2448 sizeh = XAllocSizeHints();
2449 if(xw.isfixed == False) {
2450 sizeh->flags = PSize | PResizeInc | PBaseSize;
2451 sizeh->height = xw.h;
2452 sizeh->width = xw.w;
2453 sizeh->height_inc = xw.ch;
2454 sizeh->width_inc = xw.cw;
2455 sizeh->base_height = 2 * borderpx;
2456 sizeh->base_width = 2 * borderpx;
2458 sizeh->flags = PMaxSize | PMinSize;
2459 sizeh->min_width = sizeh->max_width = xw.fw;
2460 sizeh->min_height = sizeh->max_height = xw.fh;
2463 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
2468 xloadfont(Font *f, FcPattern *pattern) {
2472 match = FcFontMatch(NULL, pattern, &result);
2476 if(!(f->set = FcFontSort(0, match, FcTrue, 0, &result))) {
2477 FcPatternDestroy(match);
2481 if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
2482 FcPatternDestroy(match);
2486 f->pattern = FcPatternDuplicate(pattern);
2488 f->ascent = f->match->ascent;
2489 f->descent = f->match->descent;
2491 f->rbearing = f->match->max_advance_width;
2493 f->height = f->ascent + f->descent;
2494 f->width = f->lbearing + f->rbearing;
2500 xloadfonts(char *fontstr, int fontsize) {
2505 if(fontstr[0] == '-') {
2506 pattern = XftXlfdParse(fontstr, False, False);
2508 pattern = FcNameParse((FcChar8 *)fontstr);
2512 die("st: can't open font %s\n", fontstr);
2515 FcPatternDel(pattern, FC_PIXEL_SIZE);
2516 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2517 usedfontsize = fontsize;
2519 result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2520 if(result == FcResultMatch) {
2521 usedfontsize = (int)fontval;
2524 * Default font size is 12, if none given. This is to
2525 * have a known usedfontsize value.
2527 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2532 FcConfigSubstitute(0, pattern, FcMatchPattern);
2533 FcDefaultSubstitute(pattern);
2535 if(xloadfont(&dc.font, pattern))
2536 die("st: can't open font %s\n", fontstr);
2538 /* Setting character width and height. */
2539 xw.cw = dc.font.width;
2540 xw.ch = dc.font.height;
2542 FcPatternDel(pattern, FC_SLANT);
2543 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2544 if(xloadfont(&dc.ifont, pattern))
2545 die("st: can't open font %s\n", fontstr);
2547 FcPatternDel(pattern, FC_WEIGHT);
2548 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2549 if(xloadfont(&dc.ibfont, pattern))
2550 die("st: can't open font %s\n", fontstr);
2552 FcPatternDel(pattern, FC_SLANT);
2553 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
2554 if(xloadfont(&dc.bfont, pattern))
2555 die("st: can't open font %s\n", fontstr);
2557 FcPatternDestroy(pattern);
2561 xunloadfonts(void) {
2565 * Free the loaded fonts in the font cache. This is done backwards
2568 for(i = 0, ip = frccur; i < frclen; i++, ip--) {
2571 XftFontClose(xw.dpy, frc[ip].font);
2576 XftFontClose(xw.dpy, dc.font.match);
2577 FcPatternDestroy(dc.font.pattern);
2578 FcFontSetDestroy(dc.font.set);
2579 XftFontClose(xw.dpy, dc.bfont.match);
2580 FcPatternDestroy(dc.bfont.pattern);
2581 FcFontSetDestroy(dc.bfont.set);
2582 XftFontClose(xw.dpy, dc.ifont.match);
2583 FcPatternDestroy(dc.ifont.pattern);
2584 FcFontSetDestroy(dc.ifont.set);
2585 XftFontClose(xw.dpy, dc.ibfont.match);
2586 FcPatternDestroy(dc.ibfont.pattern);
2587 FcFontSetDestroy(dc.ibfont.set);
2591 xzoom(const Arg *arg) {
2593 xloadfonts(usedfont, usedfontsize + arg->i);
2600 XSetWindowAttributes attrs;
2606 if(!(xw.dpy = XOpenDisplay(NULL)))
2607 die("Can't open display\n");
2608 xw.scr = XDefaultScreen(xw.dpy);
2609 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
2613 die("Could not init fontconfig.\n");
2615 usedfont = (opt_font == NULL)? font : opt_font;
2616 xloadfonts(usedfont, 0);
2619 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
2622 /* adjust fixed window geometry */
2624 sw = DisplayWidth(xw.dpy, xw.scr);
2625 sh = DisplayHeight(xw.dpy, xw.scr);
2627 xw.fx = sw + xw.fx - xw.fw - 1;
2629 xw.fy = sh + xw.fy - xw.fh - 1;
2634 /* window - default size */
2635 xw.h = 2 * borderpx + term.row * xw.ch;
2636 xw.w = 2 * borderpx + term.col * xw.cw;
2642 attrs.background_pixel = dc.col[defaultbg].pixel;
2643 attrs.border_pixel = dc.col[defaultbg].pixel;
2644 attrs.bit_gravity = NorthWestGravity;
2645 attrs.event_mask = FocusChangeMask | KeyPressMask
2646 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2647 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2648 attrs.colormap = xw.cmap;
2650 parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
2651 XRootWindow(xw.dpy, xw.scr);
2652 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2653 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2655 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2659 memset(&gcvalues, 0, sizeof(gcvalues));
2660 gcvalues.graphics_exposures = False;
2661 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
2663 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2664 DefaultDepth(xw.dpy, xw.scr));
2665 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
2666 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
2668 /* Xft rendering context */
2669 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
2672 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2673 XSetLocaleModifiers("@im=local");
2674 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2675 XSetLocaleModifiers("@im=");
2676 if((xw.xim = XOpenIM(xw.dpy,
2677 NULL, NULL, NULL)) == NULL) {
2678 die("XOpenIM failed. Could not open input"
2683 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2684 | XIMStatusNothing, XNClientWindow, xw.win,
2685 XNFocusWindow, xw.win, NULL);
2687 die("XCreateIC failed. Could not obtain input method.\n");
2689 /* white cursor, black outline */
2690 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2691 XDefineCursor(xw.dpy, xw.win, cursor);
2692 XRecolorCursor(xw.dpy, cursor,
2693 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2694 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2696 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2697 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
2698 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
2701 XMapWindow(xw.dpy, xw.win);
2707 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2708 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
2709 width = charlen * xw.cw, xp, i;
2711 int u8fl, u8fblen, u8cblen, doesexist;
2714 Font *font = &dc.font;
2716 FcPattern *fcpattern, *fontpattern;
2717 FcFontSet *fcsets[] = { NULL };
2718 FcCharSet *fccharset;
2719 Colour *fg = &dc.col[base.fg], *bg = &dc.col[base.bg],
2720 *temp, revfg, revbg;
2721 XRenderColor colfg, colbg;
2723 frcflags = FRC_NORMAL;
2725 if(base.mode & ATTR_BOLD) {
2726 if(BETWEEN(base.fg, 0, 7)) {
2727 /* basic system colors */
2728 fg = &dc.col[base.fg + 8];
2729 } else if(BETWEEN(base.fg, 16, 195)) {
2731 fg = &dc.col[base.fg + 36];
2732 } else if(BETWEEN(base.fg, 232, 251)) {
2734 fg = &dc.col[base.fg + 4];
2737 * Those ranges will not be brightened:
2738 * 8 - 15 – bright system colors
2739 * 196 - 231 – highest 256 color cube
2740 * 252 - 255 – brightest colors in greyscale
2743 frcflags = FRC_BOLD;
2746 if(base.mode & ATTR_ITALIC) {
2748 frcflags = FRC_ITALIC;
2750 if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
2752 frcflags = FRC_ITALICBOLD;
2755 if(IS_SET(MODE_REVERSE)) {
2756 if(fg == &dc.col[defaultfg]) {
2757 fg = &dc.col[defaultbg];
2759 colfg.red = ~fg->color.red;
2760 colfg.green = ~fg->color.green;
2761 colfg.blue = ~fg->color.blue;
2762 colfg.alpha = fg->color.alpha;
2763 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
2767 if(bg == &dc.col[defaultbg]) {
2768 bg = &dc.col[defaultfg];
2770 colbg.red = ~bg->color.red;
2771 colbg.green = ~bg->color.green;
2772 colbg.blue = ~bg->color.blue;
2773 colbg.alpha = bg->color.alpha;
2774 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
2779 if(base.mode & ATTR_REVERSE) {
2785 /* Intelligent cleaning up of the borders. */
2787 xclear(0, (y == 0)? 0 : winy, borderpx,
2788 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
2790 if(x + charlen >= term.col) {
2791 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
2792 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
2795 xclear(winx, 0, winx + width, borderpx);
2797 xclear(winx, winy + xw.ch, winx + width, xw.h);
2799 /* Clean up the region we want to draw to. */
2800 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
2802 fcsets[0] = font->set;
2803 for(xp = winx; bytelen > 0;) {
2805 * Search for the range in the to be printed string of glyphs
2806 * that are in the main font. Then print that range. If
2807 * some glyph is found that is not in the font, do the
2815 u8cblen = utf8decode(s, &u8char);
2819 doesexist = XftCharIndex(xw.dpy, font->match, u8char);
2820 if(!doesexist || bytelen <= 0) {
2829 XftDrawStringUtf8(xw.draw, fg,
2831 winy + font->ascent,
2834 xp += font->width * u8fl;
2846 /* Search the font cache. */
2847 for(i = 0; i < frclen; i++, frp--) {
2851 if(frc[frp].c == u8char
2852 && frc[frp].flags == frcflags) {
2857 /* Nothing was found. */
2860 * Nothing was found in the cache. Now use
2861 * some dozen of Fontconfig calls to get the
2862 * font for one single character.
2864 fcpattern = FcPatternDuplicate(font->pattern);
2865 fccharset = FcCharSetCreate();
2867 FcCharSetAddChar(fccharset, u8char);
2868 FcPatternAddCharSet(fcpattern, FC_CHARSET,
2870 FcPatternAddBool(fcpattern, FC_SCALABLE,
2873 FcConfigSubstitute(0, fcpattern,
2875 FcDefaultSubstitute(fcpattern);
2877 fontpattern = FcFontSetMatch(0, fcsets,
2878 FcTrue, fcpattern, &fcres);
2881 * Overwrite or create the new cache entry
2886 if(frccur >= LEN(frc))
2888 if(frclen > LEN(frc)) {
2890 XftFontClose(xw.dpy, frc[frccur].font);
2893 frc[frccur].font = XftFontOpenPattern(xw.dpy,
2895 frc[frccur].c = u8char;
2896 frc[frccur].flags = frcflags;
2898 FcPatternDestroy(fcpattern);
2899 FcCharSetDestroy(fccharset);
2904 XftDrawStringUtf8(xw.draw, fg, frc[frp].font,
2905 xp, winy + frc[frp].font->ascent,
2906 (FcChar8 *)u8c, u8cblen);
2912 XftDrawStringUtf8(xw.draw, fg, font->set, winx,
2913 winy + font->ascent, (FcChar8 *)s, bytelen);
2916 if(base.mode & ATTR_UNDERLINE) {
2917 XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
2924 static int oldx = 0, oldy = 0;
2926 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs, 0};
2928 LIMIT(oldx, 0, term.col-1);
2929 LIMIT(oldy, 0, term.row-1);
2931 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2932 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2934 /* remove the old cursor */
2935 if(term.line[oldy][oldx].state & GLYPH_SET) {
2936 sl = utf8size(term.line[oldy][oldx].c);
2937 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
2940 xtermclear(oldx, oldy, oldx, oldy);
2943 /* draw the new one */
2944 if(!(IS_SET(MODE_HIDE))) {
2945 if(!(xw.state & WIN_FOCUSED))
2948 if(IS_SET(MODE_REVERSE))
2949 g.mode |= ATTR_REVERSE, g.fg = defaultcs, g.bg = defaultfg;
2952 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2953 oldx = term.c.x, oldy = term.c.y;
2959 xsettitle(char *p) {
2962 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
2964 XSetWMName(xw.dpy, xw.win, &prop);
2969 xsettitle(opt_title ? opt_title : "st");
2973 redraw(int timeout) {
2974 struct timespec tv = {0, timeout * 1000};
2980 nanosleep(&tv, NULL);
2981 XSync(xw.dpy, False); /* necessary for a good tput flash */
2987 drawregion(0, 0, term.col, term.row);
2988 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
2990 XSetForeground(xw.dpy, dc.gc,
2991 dc.col[IS_SET(MODE_REVERSE)?
2992 defaultfg : defaultbg].pixel);
2996 drawregion(int x1, int y1, int x2, int y2) {
2997 int ic, ib, x, y, ox, sl;
2999 char buf[DRAW_BUF_SIZ];
3000 bool ena_sel = sel.bx != -1;
3002 if(sel.alt ^ IS_SET(MODE_ALTSCREEN))
3005 if(!(xw.state & WIN_VISIBLE))
3008 for(y = y1; y < y2; y++) {
3012 xtermclear(0, y, term.col, y);
3014 base = term.line[y][0];
3016 for(x = x1; x < x2; x++) {
3017 new = term.line[y][x];
3018 if(ena_sel && *(new.c) && selected(x, y))
3019 new.mode ^= ATTR_REVERSE;
3020 if(ib > 0 && (!(new.state & GLYPH_SET)
3021 || ATTRCMP(base, new)
3022 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
3023 xdraws(buf, base, ox, y, ic, ib);
3026 if(new.state & GLYPH_SET) {
3032 sl = utf8size(new.c);
3033 memcpy(buf+ib, new.c, sl);
3039 xdraws(buf, base, ox, y, ic, ib);
3045 expose(XEvent *ev) {
3046 XExposeEvent *e = &ev->xexpose;
3048 if(xw.state & WIN_REDRAW) {
3050 xw.state &= ~WIN_REDRAW;
3056 visibility(XEvent *ev) {
3057 XVisibilityEvent *e = &ev->xvisibility;
3059 if(e->state == VisibilityFullyObscured) {
3060 xw.state &= ~WIN_VISIBLE;
3061 } else if(!(xw.state & WIN_VISIBLE)) {
3062 /* need a full redraw for next Expose, not just a buf copy */
3063 xw.state |= WIN_VISIBLE | WIN_REDRAW;
3069 xw.state &= ~WIN_VISIBLE;
3073 xseturgency(int add) {
3074 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
3076 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
3077 XSetWMHints(xw.dpy, xw.win, h);
3083 XFocusChangeEvent *e = &ev->xfocus;
3085 if(e->mode == NotifyGrab)
3088 if(ev->type == FocusIn) {
3089 XSetICFocus(xw.xic);
3090 xw.state |= WIN_FOCUSED;
3093 XUnsetICFocus(xw.xic);
3094 xw.state &= ~WIN_FOCUSED;
3099 match(uint mask, uint state) {
3100 state &= ~(ignoremod);
3102 if(mask == XK_NO_MOD && state)
3104 if(mask != XK_ANY_MOD && mask != XK_NO_MOD && !state)
3106 if((state & mask) != state)
3112 numlock(const Arg *dummy) {
3117 kmap(KeySym k, uint state) {
3122 /* Check for mapped keys out of X11 function keys. */
3123 for(i = 0; i < LEN(mappedkeys); i++) {
3124 if(mappedkeys[i] == k)
3127 if(i == LEN(mappedkeys)) {
3128 if((k & 0xFFFF) < 0xFD00)
3132 for(kp = key; kp < key + LEN(key); kp++) {
3138 if(!match(mask, state))
3141 if(kp->appkey > 0) {
3142 if(!IS_SET(MODE_APPKEYPAD))
3144 if(term.numlock && kp->appkey == 2)
3146 } else if(kp->appkey < 0 && IS_SET(MODE_APPKEYPAD)) {
3150 if((kp->appcursor < 0 && IS_SET(MODE_APPCURSOR)) ||
3152 && !IS_SET(MODE_APPCURSOR))) {
3156 if((kp->crlf < 0 && IS_SET(MODE_CRLF)) ||
3157 (kp->crlf > 0 && !IS_SET(MODE_CRLF))) {
3168 kpress(XEvent *ev) {
3169 XKeyEvent *e = &ev->xkey;
3171 char xstr[31], buf[32], *customkey, *cp = buf;
3176 if(IS_SET(MODE_KBDLOCK))
3179 len = XmbLookupString(xw.xic, e, xstr, sizeof(xstr), &ksym, &status);
3180 e->state &= ~Mod2Mask;
3182 for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
3183 if(ksym == bp->keysym && match(bp->mod, e->state)) {
3184 bp->func(&(bp->arg));
3189 /* 2. custom keys from config.h */
3190 if((customkey = kmap(ksym, e->state))) {
3191 len = strlen(customkey);
3192 memcpy(buf, customkey, len);
3193 /* 2. hardcoded (overrides X lookup) */
3198 if(len == 1 && e->state & Mod1Mask)
3201 memcpy(cp, xstr, len);
3202 len = cp - buf + len;
3206 if(IS_SET(MODE_ECHO))
3212 cmessage(XEvent *e) {
3215 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
3217 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
3218 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
3219 xw.state |= WIN_FOCUSED;
3221 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
3222 xw.state &= ~WIN_FOCUSED;
3224 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
3225 /* Send SIGHUP to shell */
3232 cresize(int width, int height) {
3240 col = (xw.w - 2 * borderpx) / xw.cw;
3241 row = (xw.h - 2 * borderpx) / xw.ch;
3250 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
3253 cresize(e->xconfigure.width, e->xconfigure.height);
3260 int xfd = XConnectionNumber(xw.dpy), xev;
3261 struct timeval drawtimeout, *tv = NULL, now, last;
3263 gettimeofday(&last, NULL);
3265 for(xev = actionfps;;) {
3267 FD_SET(cmdfd, &rfd);
3269 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
3272 die("select failed: %s\n", SERRNO);
3275 gettimeofday(&now, NULL);
3276 drawtimeout.tv_sec = 0;
3277 drawtimeout.tv_usec = (1000/xfps) * 1000;
3280 if(FD_ISSET(cmdfd, &rfd))
3283 if(FD_ISSET(xfd, &rfd))
3286 if(TIMEDIFF(now, last) > \
3287 (xev ? (1000/xfps) : (1000/actionfps))) {
3288 while(XPending(xw.dpy)) {
3289 XNextEvent(xw.dpy, &ev);
3290 if(XFilterEvent(&ev, None))
3292 if(handler[ev.type])
3293 (handler[ev.type])(&ev);
3300 if(xev && !FD_ISSET(xfd, &rfd))
3302 if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd))
3309 main(int argc, char *argv[]) {
3310 int i, bitm, xr, yr;
3313 xw.fw = xw.fh = xw.fx = xw.fy = 0;
3316 for(i = 1; i < argc; i++) {
3317 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
3320 opt_class = argv[i];
3323 /* eat all remaining arguments */
3335 bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
3340 if(bitm & WidthValue)
3342 if(bitm & HeightValue)
3344 if(bitm & XNegative && xw.fx == 0)
3346 if(bitm & XNegative && xw.fy == 0)
3349 if(xw.fh != 0 && xw.fw != 0)
3358 opt_title = argv[i];
3365 opt_embed = argv[i];
3371 setlocale(LC_CTYPE, "");
3372 XSetLocaleModifiers("");