1 /* See LICENSE for licence details. */
2 #define _XOPEN_SOURCE 600
15 #include <sys/ioctl.h>
16 #include <sys/select.h>
19 #include <sys/types.h>
23 #include <X11/Xatom.h>
25 #include <X11/Xutil.h>
26 #include <X11/cursorfont.h>
27 #include <X11/keysym.h>
28 #include <X11/extensions/Xdbe.h>
29 #include <X11/Xft/Xft.h>
30 #include <fontconfig/fontconfig.h>
34 #define Draw XftDraw *
35 #define Colour XftColor
36 #define Colourmap Colormap
40 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
42 #elif defined(__FreeBSD__) || defined(__DragonFly__)
47 "st " VERSION " (c) 2010-2013 st engineers\n" \
48 "usage: st [-v] [-c class] [-f font] [-g geometry] [-o file]" \
49 " [-t title] [-w windowid] [-e command ...]\n"
52 #define XEMBED_FOCUS_IN 4
53 #define XEMBED_FOCUS_OUT 5
57 #define ESC_BUF_SIZ (128*UTF_SIZ)
58 #define ESC_ARG_SIZ 16
59 #define STR_BUF_SIZ ESC_BUF_SIZ
60 #define STR_ARG_SIZ ESC_ARG_SIZ
61 #define DRAW_BUF_SIZ 20*1024
62 #define XK_ANY_MOD UINT_MAX
64 #define XK_SWITCH_MOD (1<<13)
66 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
69 #define SERRNO strerror(errno)
70 #define MIN(a, b) ((a) < (b) ? (a) : (b))
71 #define MAX(a, b) ((a) < (b) ? (b) : (a))
72 #define LEN(a) (sizeof(a) / sizeof(a[0]))
73 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
74 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
75 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
76 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
77 #define IS_SET(flag) ((term.mode & (flag)) != 0)
78 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
80 #define VT102ID "\033[?6c"
82 enum glyph_attribute {
92 enum cursor_movement {
115 MODE_MOUSEMOTION = 64,
121 MODE_APPCURSOR = 2048,
122 MODE_MOUSESGR = 4096,
128 ESC_STR = 4, /* DSC, OSC, PM, APC */
130 ESC_STR_END = 16, /* a final string was encountered */
131 ESC_TEST = 32, /* Enter in test mode */
142 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
144 typedef unsigned char uchar;
145 typedef unsigned int uint;
146 typedef unsigned long ulong;
147 typedef unsigned short ushort;
150 char c[UTF_SIZ]; /* character code */
151 uchar mode; /* attribute flags */
152 ushort fg; /* foreground */
153 ushort bg; /* background */
154 uchar state; /* state flags */
160 Glyph attr; /* current char attributes */
166 /* CSI Escape sequence structs */
167 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
169 char buf[ESC_BUF_SIZ]; /* raw string */
170 int len; /* raw string length */
172 int arg[ESC_ARG_SIZ];
173 int narg; /* nb of args */
177 /* STR Escape sequence structs */
178 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
180 char type; /* ESC type ... */
181 char buf[STR_BUF_SIZ]; /* raw string */
182 int len; /* raw string length */
183 char *args[STR_ARG_SIZ];
184 int narg; /* nb of args */
187 /* Internal representation of the screen */
189 int row; /* nb row */
190 int col; /* nb col */
191 Line *line; /* screen */
192 Line *alt; /* alternate screen */
193 bool *dirty; /* dirtyness of lines */
194 TCursor c; /* cursor */
195 int top; /* top scroll limit */
196 int bot; /* bottom scroll limit */
197 int mode; /* terminal mode flags */
198 int esc; /* escape state flags */
199 bool numlock; /* lock numbers in keyboard */
203 /* Purely graphic info */
209 Atom xembed, wmdeletewin;
215 bool isfixed; /* is fixed geometry? */
216 int fx, fy, fw, fh; /* fixed geometry */
217 int tw, th; /* tty width and height */
218 int w, h; /* window width and height */
219 int ch; /* char height */
220 int cw; /* char width */
221 char state; /* focus, redraw, visible */
228 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
229 signed char appkey; /* application keypad */
230 signed char appcursor; /* application cursor */
231 signed char crlf; /* crlf mode */
234 /* TODO: use better name for vars... */
245 struct timeval tclick1;
246 struct timeval tclick2;
259 void (*func)(const Arg *);
263 /* function definitions used in config.h */
264 static void xzoom(const Arg *);
265 static void selpaste(const Arg *);
266 static void numlock(const Arg *);
268 /* Config.h for applying patches and the configuration. */
284 /* Drawing Context */
286 Colour col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
287 Font font, bfont, ifont, ibfont;
291 static void die(const char *, ...);
292 static void draw(void);
293 static void redraw(int);
294 static void drawregion(int, int, int, int);
295 static void execsh(void);
296 static void sigchld(int);
297 static void run(void);
299 static void csidump(void);
300 static void csihandle(void);
301 static void csiparse(void);
302 static void csireset(void);
303 static void strdump(void);
304 static void strhandle(void);
305 static void strparse(void);
306 static void strreset(void);
308 static void tclearregion(int, int, int, int, int);
309 static void tcursor(int);
310 static void tdeletechar(int);
311 static void tdeleteline(int);
312 static void tinsertblank(int);
313 static void tinsertblankline(int);
314 static void tmoveto(int, int);
315 static void tmoveato(int x, int y);
316 static void tnew(int, int);
317 static void tnewline(int);
318 static void tputtab(bool);
319 static void tputc(char *, int);
320 static void treset(void);
321 static int tresize(int, int);
322 static void tscrollup(int, int);
323 static void tscrolldown(int, int);
324 static void tsetattr(int*, int);
325 static void tsetchar(char *, Glyph *, int, int);
326 static void tsetscroll(int, int);
327 static void tswapscreen(void);
328 static void tsetdirt(int, int);
329 static void tsetmode(bool, bool, int *, int);
330 static void tfulldirt(void);
331 static void techo(char *, int);
333 static inline bool match(uint, uint);
334 static void ttynew(void);
335 static void ttyread(void);
336 static void ttyresize(void);
337 static void ttywrite(const char *, size_t);
339 static void xdraws(char *, Glyph, int, int, int, int);
340 static void xhints(void);
341 static void xclear(int, int, int, int);
342 static void xdrawcursor(void);
343 static void xinit(void);
344 static void xloadcols(void);
345 static int xloadfont(Font *, FcPattern *);
346 static void xloadfonts(char *, int);
347 static void xresettitle(void);
348 static void xseturgency(int);
349 static void xsetsel(char*);
350 static void xtermclear(int, int, int, int);
351 static void xunloadfonts(void);
352 static void xresize(int, int);
354 static void expose(XEvent *);
355 static void visibility(XEvent *);
356 static void unmap(XEvent *);
357 static char *kmap(KeySym, uint);
358 static void kpress(XEvent *);
359 static void cmessage(XEvent *);
360 static void cresize(int, int);
361 static void resize(XEvent *);
362 static void focus(XEvent *);
363 static void brelease(XEvent *);
364 static void bpress(XEvent *);
365 static void bmotion(XEvent *);
366 static void selnotify(XEvent *);
367 static void selclear(XEvent *);
368 static void selrequest(XEvent *);
370 static void selinit(void);
371 static inline bool selected(int, int);
372 static void selcopy(void);
373 static void selscroll(int, int);
375 static int utf8decode(char *, long *);
376 static int utf8encode(long *, char *);
377 static int utf8size(char *);
378 static int isfullutf8(char *, int);
380 static ssize_t xwrite(int, char *, size_t);
381 static void *xmalloc(size_t);
382 static void *xrealloc(void *, size_t);
383 static void *xcalloc(size_t, size_t);
385 static void (*handler[LASTEvent])(XEvent *) = {
387 [ClientMessage] = cmessage,
388 [ConfigureNotify] = resize,
389 [VisibilityNotify] = visibility,
390 [UnmapNotify] = unmap,
394 [MotionNotify] = bmotion,
395 [ButtonPress] = bpress,
396 [ButtonRelease] = brelease,
397 [SelectionClear] = selclear,
398 [SelectionNotify] = selnotify,
399 [SelectionRequest] = selrequest,
406 static CSIEscape csiescseq;
407 static STREscape strescseq;
410 static Selection sel;
411 static int iofd = -1;
412 static char **opt_cmd = NULL;
413 static char *opt_io = NULL;
414 static char *opt_title = NULL;
415 static char *opt_embed = NULL;
416 static char *opt_class = NULL;
417 static char *opt_font = NULL;
421 static char *usedfont = NULL;
422 static int usedfontsize = 0;
424 /* Font Ring Cache */
439 * Fontcache is a ring buffer, with frccur as current position and frclen as
440 * the current length of used elements.
443 static Fontcache frc[1024];
444 static int frccur = -1, frclen = 0;
447 xwrite(int fd, char *s, size_t len) {
451 ssize_t r = write(fd, s, len);
461 xmalloc(size_t len) {
462 void *p = malloc(len);
465 die("Out of memory\n");
471 xrealloc(void *p, size_t len) {
472 if((p = realloc(p, len)) == NULL)
473 die("Out of memory\n");
479 xcalloc(size_t nmemb, size_t size) {
480 void *p = calloc(nmemb, size);
483 die("Out of memory\n");
489 utf8decode(char *s, long *u) {
495 if(~c & B7) { /* 0xxxxxxx */
498 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
499 *u = c&(B4|B3|B2|B1|B0);
501 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
502 *u = c&(B3|B2|B1|B0);
504 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
511 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
513 if((c & (B7|B6)) != B7) /* 10xxxxxx */
516 *u |= c & (B5|B4|B3|B2|B1|B0);
519 if((n == 1 && *u < 0x80) ||
520 (n == 2 && *u < 0x800) ||
521 (n == 3 && *u < 0x10000) ||
522 (*u >= 0xD800 && *u <= 0xDFFF)) {
534 utf8encode(long *u, char *s) {
542 *sp = uc; /* 0xxxxxxx */
544 } else if(*u < 0x800) {
545 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
547 } else if(uc < 0x10000) {
548 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
550 } else if(uc <= 0x10FFFF) {
551 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
557 for(i=n,++sp; i>0; --i,++sp)
558 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
570 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
571 UTF-8 otherwise return 0 */
573 isfullutf8(char *s, int b) {
581 } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
583 } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
585 ((b == 2) && (*c2&(B7|B6)) == B7))) {
587 } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
589 ((b == 2) && (*c2&(B7|B6)) == B7) ||
590 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
603 } else if((c&(B7|B6|B5)) == (B7|B6)) {
605 } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
614 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
615 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
619 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
620 if(sel.xtarget == None)
621 sel.xtarget = XA_STRING;
629 return LIMIT(x, 0, term.col-1);
637 return LIMIT(y, 0, term.row-1);
641 selected(int x, int y) {
644 if(sel.ey == y && sel.by == y) {
645 bx = MIN(sel.bx, sel.ex);
646 ex = MAX(sel.bx, sel.ex);
647 return BETWEEN(x, bx, ex);
650 return ((sel.b.y < y && y < sel.e.y)
651 || (y == sel.e.y && x <= sel.e.x))
652 || (y == sel.b.y && x >= sel.b.x
653 && (x <= sel.e.x || sel.b.y != sel.e.y));
657 getbuttoninfo(XEvent *e) {
658 sel.alt = IS_SET(MODE_ALTSCREEN);
660 sel.ex = x2col(e->xbutton.x);
661 sel.ey = y2row(e->xbutton.y);
663 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
664 sel.b.y = MIN(sel.by, sel.ey);
665 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
666 sel.e.y = MAX(sel.by, sel.ey);
670 mousereport(XEvent *e) {
671 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
672 button = e->xbutton.button, state = e->xbutton.state,
675 static int ob, ox, oy;
678 if(e->xbutton.type == MotionNotify) {
679 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
683 } else if(!IS_SET(MODE_MOUSESGR)
684 && (e->xbutton.type == ButtonRelease
685 || button == AnyButton)) {
691 if(e->xbutton.type == ButtonPress) {
697 button += (state & ShiftMask ? 4 : 0)
698 + (state & Mod4Mask ? 8 : 0)
699 + (state & ControlMask ? 16 : 0);
702 if(IS_SET(MODE_MOUSESGR)) {
703 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
705 e->xbutton.type == ButtonRelease ? 'm' : 'M');
706 } else if(x < 223 && y < 223) {
707 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
708 32+button, 32+x+1, 32+y+1);
718 if(IS_SET(MODE_MOUSE)) {
720 } else if(e->xbutton.button == Button1) {
723 tsetdirt(sel.b.y, sel.e.y);
727 sel.ex = sel.bx = x2col(e->xbutton.x);
728 sel.ey = sel.by = y2row(e->xbutton.y);
729 } else if(e->xbutton.button == Button4) {
731 } else if(e->xbutton.button == Button5) {
739 int x, y, bufsize, is_selected = 0, size;
745 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
746 ptr = str = xmalloc(bufsize);
748 /* append every set & selected glyph to the selection */
749 for(y = 0; y < term.row; y++) {
750 gp = &term.line[y][0];
751 last = gp + term.col;
753 while(--last >= gp && !(last->state & GLYPH_SET))
756 for(x = 0; gp <= last; x++, ++gp) {
757 if(!(is_selected = selected(x, y)))
760 p = (gp->state & GLYPH_SET) ? gp->c : " ";
762 memcpy(ptr, p, size);
765 /* \n at the end of every selected line except for the last one */
766 if(is_selected && y < sel.e.y)
775 selnotify(XEvent *e) {
776 ulong nitems, ofs, rem;
783 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
784 False, AnyPropertyType, &type, &format,
785 &nitems, &rem, &data)) {
786 fprintf(stderr, "Clipboard allocation failed\n");
789 ttywrite((const char *) data, nitems * format / 8);
791 /* number of 32-bit chunks returned */
792 ofs += nitems * format / 32;
797 selpaste(const Arg *dummy) {
798 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
799 xw.win, CurrentTime);
802 void selclear(XEvent *e) {
806 tsetdirt(sel.b.y, sel.e.y);
810 selrequest(XEvent *e) {
811 XSelectionRequestEvent *xsre;
813 Atom xa_targets, string;
815 xsre = (XSelectionRequestEvent *) e;
816 xev.type = SelectionNotify;
817 xev.requestor = xsre->requestor;
818 xev.selection = xsre->selection;
819 xev.target = xsre->target;
820 xev.time = xsre->time;
824 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
825 if(xsre->target == xa_targets) {
826 /* respond with the supported type */
827 string = sel.xtarget;
828 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
829 XA_ATOM, 32, PropModeReplace,
830 (uchar *) &string, 1);
831 xev.property = xsre->property;
832 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
833 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
834 xsre->target, 8, PropModeReplace,
835 (uchar *) sel.clip, strlen(sel.clip));
836 xev.property = xsre->property;
839 /* all done, send a notification to the listener */
840 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
841 fprintf(stderr, "Error sending SelectionNotify event\n");
846 /* register the selection for both the clipboard and the primary */
852 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
854 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
855 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
859 brelease(XEvent *e) {
862 if(IS_SET(MODE_MOUSE)) {
867 if(e->xbutton.button == Button2) {
869 } else if(e->xbutton.button == Button1) {
872 term.dirty[sel.ey] = 1;
873 if(sel.bx == sel.ex && sel.by == sel.ey) {
875 gettimeofday(&now, NULL);
877 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
878 /* triple click on the line */
879 sel.b.x = sel.bx = 0;
880 sel.e.x = sel.ex = term.col;
881 sel.b.y = sel.e.y = sel.ey;
883 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
884 /* double click to select word */
886 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
887 term.line[sel.ey][sel.bx-1].c[0] != ' ') {
891 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
892 term.line[sel.ey][sel.ex+1].c[0] != ' ') {
896 sel.b.y = sel.e.y = sel.ey;
904 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
905 gettimeofday(&sel.tclick1, NULL);
910 int starty, endy, oldey, oldex;
912 if(IS_SET(MODE_MOUSE)) {
924 if(oldey != sel.ey || oldex != sel.ex) {
925 starty = MIN(oldey, sel.ey);
926 endy = MAX(oldey, sel.ey);
927 tsetdirt(starty, endy);
932 die(const char *errstr, ...) {
935 va_start(ap, errstr);
936 vfprintf(stderr, errstr, ap);
944 char *envshell = getenv("SHELL");
945 const struct passwd *pass = getpwuid(getuid());
946 char buf[sizeof(long) * 8 + 1];
953 setenv("LOGNAME", pass->pw_name, 1);
954 setenv("USER", pass->pw_name, 1);
955 setenv("SHELL", pass->pw_shell, 0);
956 setenv("HOME", pass->pw_dir, 0);
959 snprintf(buf, sizeof(buf), "%lu", xw.win);
960 setenv("WINDOWID", buf, 1);
962 signal(SIGCHLD, SIG_DFL);
963 signal(SIGHUP, SIG_DFL);
964 signal(SIGINT, SIG_DFL);
965 signal(SIGQUIT, SIG_DFL);
966 signal(SIGTERM, SIG_DFL);
967 signal(SIGALRM, SIG_DFL);
969 DEFAULT(envshell, shell);
970 setenv("TERM", termname, 1);
971 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
972 execvp(args[0], args);
980 if(waitpid(pid, &stat, 0) < 0)
981 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
983 if(WIFEXITED(stat)) {
984 exit(WEXITSTATUS(stat));
993 struct winsize w = {term.row, term.col, 0, 0};
995 /* seems to work fine on linux, openbsd and freebsd */
996 if(openpty(&m, &s, NULL, NULL, &w) < 0)
997 die("openpty failed: %s\n", SERRNO);
999 switch(pid = fork()) {
1001 die("fork failed\n");
1004 setsid(); /* create a new process group */
1005 dup2(s, STDIN_FILENO);
1006 dup2(s, STDOUT_FILENO);
1007 dup2(s, STDERR_FILENO);
1008 if(ioctl(s, TIOCSCTTY, NULL) < 0)
1009 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
1017 signal(SIGCHLD, sigchld);
1019 iofd = (!strcmp(opt_io, "-")) ?
1021 open(opt_io, O_WRONLY | O_CREAT, 0666);
1023 fprintf(stderr, "Error opening %s:%s\n",
1024 opt_io, strerror(errno));
1034 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
1036 fprintf(stderr, "\n");
1041 static char buf[BUFSIZ];
1042 static int buflen = 0;
1045 int charsize; /* size of utf8 char in bytes */
1049 /* append read bytes to unprocessed bytes */
1050 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1051 die("Couldn't read from shell: %s\n", SERRNO);
1053 /* process every complete utf8 char */
1056 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
1057 charsize = utf8decode(ptr, &utf8c);
1058 utf8encode(&utf8c, s);
1064 /* keep any uncomplete utf8 char for the next call */
1065 memmove(buf, ptr, buflen);
1069 ttywrite(const char *s, size_t n) {
1070 if(write(cmdfd, s, n) == -1)
1071 die("write error on tty: %s\n", SERRNO);
1078 w.ws_row = term.row;
1079 w.ws_col = term.col;
1080 w.ws_xpixel = xw.tw;
1081 w.ws_ypixel = xw.th;
1082 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1083 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
1087 tsetdirt(int top, int bot) {
1090 LIMIT(top, 0, term.row-1);
1091 LIMIT(bot, 0, term.row-1);
1093 for(i = top; i <= bot; i++)
1099 tsetdirt(0, term.row-1);
1106 if(mode == CURSOR_SAVE) {
1108 } else if(mode == CURSOR_LOAD) {
1118 term.c = (TCursor){{
1122 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1124 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1125 for(i = tabspaces; i < term.col; i += tabspaces)
1128 term.bot = term.row - 1;
1129 term.mode = MODE_WRAP;
1131 tclearregion(0, 0, term.col-1, term.row-1, 0);
1133 tcursor(CURSOR_SAVE);
1137 tnew(int col, int row) {
1138 /* set screen size */
1141 term.line = xmalloc(term.row * sizeof(Line));
1142 term.alt = xmalloc(term.row * sizeof(Line));
1143 term.dirty = xmalloc(term.row * sizeof(*term.dirty));
1144 term.tabs = xmalloc(term.col * sizeof(*term.tabs));
1146 for(row = 0; row < term.row; row++) {
1147 term.line[row] = xmalloc(term.col * sizeof(Glyph));
1148 term.alt [row] = xmalloc(term.col * sizeof(Glyph));
1149 term.dirty[row] = 0;
1153 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1160 Line *tmp = term.line;
1162 term.line = term.alt;
1164 term.mode ^= MODE_ALTSCREEN;
1169 tscrolldown(int orig, int n) {
1173 LIMIT(n, 0, term.bot-orig+1);
1175 tclearregion(0, term.bot-n+1, term.col-1, term.bot, 0);
1177 for(i = term.bot; i >= orig+n; i--) {
1178 temp = term.line[i];
1179 term.line[i] = term.line[i-n];
1180 term.line[i-n] = temp;
1183 term.dirty[i-n] = 1;
1190 tscrollup(int orig, int n) {
1193 LIMIT(n, 0, term.bot-orig+1);
1195 tclearregion(0, orig, term.col-1, orig+n-1, 0);
1197 for(i = orig; i <= term.bot-n; i++) {
1198 temp = term.line[i];
1199 term.line[i] = term.line[i+n];
1200 term.line[i+n] = temp;
1203 term.dirty[i+n] = 1;
1206 selscroll(orig, -n);
1210 selscroll(int orig, int n) {
1214 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1215 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1219 if(sel.by < term.top) {
1223 if(sel.ey > term.bot) {
1227 sel.b.y = sel.by, sel.b.x = sel.bx;
1228 sel.e.y = sel.ey, sel.e.x = sel.ex;
1233 tnewline(int first_col) {
1237 tscrollup(term.top, 1);
1241 tmoveto(first_col ? 0 : term.c.x, y);
1246 /* int noarg = 1; */
1247 char *p = csiescseq.buf;
1251 csiescseq.priv = 1, p++;
1253 while(p < csiescseq.buf+csiescseq.len) {
1254 while(isdigit(*p)) {
1255 csiescseq.arg[csiescseq.narg] *= 10;
1256 csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
1258 if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ) {
1259 csiescseq.narg++, p++;
1261 csiescseq.mode = *p;
1269 /* for absolute user moves, when decom is set */
1271 tmoveato(int x, int y) {
1272 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1276 tmoveto(int x, int y) {
1279 if(term.c.state & CURSOR_ORIGIN) {
1284 maxy = term.row - 1;
1286 LIMIT(x, 0, term.col-1);
1287 LIMIT(y, miny, maxy);
1288 term.c.state &= ~CURSOR_WRAPNEXT;
1294 tsetchar(char *c, Glyph *attr, int x, int y) {
1295 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1296 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1297 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1298 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1299 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1300 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1301 "", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1302 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1303 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1307 * The table is proudly stolen from rxvt.
1309 if(attr->mode & ATTR_GFX) {
1310 if(c[0] >= 0x41 && c[0] <= 0x7e
1311 && vt100_0[c[0] - 0x41]) {
1312 c = vt100_0[c[0] - 0x41];
1317 term.line[y][x] = *attr;
1318 memcpy(term.line[y][x].c, c, UTF_SIZ);
1319 term.line[y][x].state |= GLYPH_SET;
1323 tclearregion(int x1, int y1, int x2, int y2, int bce) {
1327 temp = x1, x1 = x2, x2 = temp;
1329 temp = y1, y1 = y2, y2 = temp;
1331 LIMIT(x1, 0, term.col-1);
1332 LIMIT(x2, 0, term.col-1);
1333 LIMIT(y1, 0, term.row-1);
1334 LIMIT(y2, 0, term.row-1);
1336 for(y = y1; y <= y2; y++) {
1338 for(x = x1; x <= x2; x++) {
1340 term.line[y][x] = term.c.attr;
1341 memcpy(term.line[y][x].c, " ", 2);
1342 term.line[y][x].state |= GLYPH_SET;
1344 term.line[y][x].state = 0;
1351 tdeletechar(int n) {
1352 int src = term.c.x + n;
1354 int size = term.col - src;
1356 term.dirty[term.c.y] = 1;
1358 if(src >= term.col) {
1359 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y, 0);
1363 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1364 size * sizeof(Glyph));
1365 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y, 0);
1369 tinsertblank(int n) {
1372 int size = term.col - dst;
1374 term.dirty[term.c.y] = 1;
1376 if(dst >= term.col) {
1377 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y, 0);
1381 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1382 size * sizeof(Glyph));
1383 tclearregion(src, term.c.y, dst - 1, term.c.y, 0);
1387 tinsertblankline(int n) {
1388 if(term.c.y < term.top || term.c.y > term.bot)
1391 tscrolldown(term.c.y, n);
1395 tdeleteline(int n) {
1396 if(term.c.y < term.top || term.c.y > term.bot)
1399 tscrollup(term.c.y, n);
1403 tsetattr(int *attr, int l) {
1406 for(i = 0; i < l; i++) {
1409 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
1410 | ATTR_ITALIC | ATTR_BLINK);
1411 term.c.attr.fg = defaultfg;
1412 term.c.attr.bg = defaultbg;
1415 term.c.attr.mode |= ATTR_BOLD;
1418 term.c.attr.mode |= ATTR_ITALIC;
1421 term.c.attr.mode |= ATTR_UNDERLINE;
1423 case 5: /* slow blink */
1424 case 6: /* rapid blink */
1425 term.c.attr.mode |= ATTR_BLINK;
1428 term.c.attr.mode |= ATTR_REVERSE;
1432 term.c.attr.mode &= ~ATTR_BOLD;
1435 term.c.attr.mode &= ~ATTR_ITALIC;
1438 term.c.attr.mode &= ~ATTR_UNDERLINE;
1442 term.c.attr.mode &= ~ATTR_BLINK;
1445 term.c.attr.mode &= ~ATTR_REVERSE;
1448 if(i + 2 < l && attr[i + 1] == 5) {
1450 if(BETWEEN(attr[i], 0, 255)) {
1451 term.c.attr.fg = attr[i];
1454 "erresc: bad fgcolor %d\n",
1459 "erresc(38): gfx attr %d unknown\n",
1464 term.c.attr.fg = defaultfg;
1467 if(i + 2 < l && attr[i + 1] == 5) {
1469 if(BETWEEN(attr[i], 0, 255)) {
1470 term.c.attr.bg = attr[i];
1473 "erresc: bad bgcolor %d\n",
1478 "erresc(48): gfx attr %d unknown\n",
1483 term.c.attr.bg = defaultbg;
1486 if(BETWEEN(attr[i], 30, 37)) {
1487 term.c.attr.fg = attr[i] - 30;
1488 } else if(BETWEEN(attr[i], 40, 47)) {
1489 term.c.attr.bg = attr[i] - 40;
1490 } else if(BETWEEN(attr[i], 90, 97)) {
1491 term.c.attr.fg = attr[i] - 90 + 8;
1492 } else if(BETWEEN(attr[i], 100, 107)) {
1493 term.c.attr.bg = attr[i] - 100 + 8;
1496 "erresc(default): gfx attr %d unknown\n",
1497 attr[i]), csidump();
1505 tsetscroll(int t, int b) {
1508 LIMIT(t, 0, term.row-1);
1509 LIMIT(b, 0, term.row-1);
1519 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1522 tsetmode(bool priv, bool set, int *args, int narg) {
1526 for(lim = args + narg; args < lim; ++args) {
1530 case 1: /* DECCKM -- Cursor key */
1531 MODBIT(term.mode, set, MODE_APPCURSOR);
1533 case 5: /* DECSCNM -- Reverse video */
1535 MODBIT(term.mode, set, MODE_REVERSE);
1536 if(mode != term.mode)
1537 redraw(REDRAW_TIMEOUT);
1539 case 6: /* DECOM -- Origin */
1540 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1543 case 7: /* DECAWM -- Auto wrap */
1544 MODBIT(term.mode, set, MODE_WRAP);
1546 case 0: /* Error (IGNORED) */
1547 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1548 case 3: /* DECCOLM -- Column (IGNORED) */
1549 case 4: /* DECSCLM -- Scroll (IGNORED) */
1550 case 8: /* DECARM -- Auto repeat (IGNORED) */
1551 case 18: /* DECPFF -- Printer feed (IGNORED) */
1552 case 19: /* DECPEX -- Printer extent (IGNORED) */
1553 case 42: /* DECNRCM -- National characters (IGNORED) */
1554 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1556 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1557 MODBIT(term.mode, !set, MODE_HIDE);
1559 case 1000: /* 1000,1002: enable xterm mouse report */
1560 MODBIT(term.mode, set, MODE_MOUSEBTN);
1561 MODBIT(term.mode, 0, MODE_MOUSEMOTION);
1564 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1565 MODBIT(term.mode, 0, MODE_MOUSEBTN);
1568 MODBIT(term.mode, set, MODE_MOUSESGR);
1570 case 1049: /* = 1047 and 1048 */
1573 alt = IS_SET(MODE_ALTSCREEN);
1575 tclearregion(0, 0, term.col-1,
1578 if(set ^ alt) /* set is always 1 or 0 */
1585 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1589 "erresc: unknown private set/reset mode %d\n",
1595 case 0: /* Error (IGNORED) */
1597 case 2: /* KAM -- keyboard action */
1598 MODBIT(term.mode, set, MODE_KBDLOCK);
1600 case 4: /* IRM -- Insertion-replacement */
1601 MODBIT(term.mode, set, MODE_INSERT);
1603 case 12: /* SRM -- Send/Receive */
1604 MODBIT(term.mode, !set, MODE_ECHO);
1606 case 20: /* LNM -- Linefeed/new line */
1607 MODBIT(term.mode, set, MODE_CRLF);
1611 "erresc: unknown set/reset mode %d\n",
1623 switch(csiescseq.mode) {
1626 fprintf(stderr, "erresc: unknown csi ");
1630 case '@': /* ICH -- Insert <n> blank char */
1631 DEFAULT(csiescseq.arg[0], 1);
1632 tinsertblank(csiescseq.arg[0]);
1634 case 'A': /* CUU -- Cursor <n> Up */
1635 DEFAULT(csiescseq.arg[0], 1);
1636 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1638 case 'B': /* CUD -- Cursor <n> Down */
1639 case 'e': /* VPR --Cursor <n> Down */
1640 DEFAULT(csiescseq.arg[0], 1);
1641 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1643 case 'c': /* DA -- Device Attributes */
1644 if(csiescseq.arg[0] == 0)
1645 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1647 case 'C': /* CUF -- Cursor <n> Forward */
1648 case 'a': /* HPR -- Cursor <n> Forward */
1649 DEFAULT(csiescseq.arg[0], 1);
1650 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1652 case 'D': /* CUB -- Cursor <n> Backward */
1653 DEFAULT(csiescseq.arg[0], 1);
1654 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1656 case 'E': /* CNL -- Cursor <n> Down and first col */
1657 DEFAULT(csiescseq.arg[0], 1);
1658 tmoveto(0, term.c.y+csiescseq.arg[0]);
1660 case 'F': /* CPL -- Cursor <n> Up and first col */
1661 DEFAULT(csiescseq.arg[0], 1);
1662 tmoveto(0, term.c.y-csiescseq.arg[0]);
1664 case 'g': /* TBC -- Tabulation clear */
1665 switch (csiescseq.arg[0]) {
1666 case 0: /* clear current tab stop */
1667 term.tabs[term.c.x] = 0;
1669 case 3: /* clear all the tabs */
1670 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1676 case 'G': /* CHA -- Move to <col> */
1678 DEFAULT(csiescseq.arg[0], 1);
1679 tmoveto(csiescseq.arg[0]-1, term.c.y);
1681 case 'H': /* CUP -- Move to <row> <col> */
1683 DEFAULT(csiescseq.arg[0], 1);
1684 DEFAULT(csiescseq.arg[1], 1);
1685 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1687 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1688 DEFAULT(csiescseq.arg[0], 1);
1689 while(csiescseq.arg[0]--)
1692 case 'J': /* ED -- Clear screen */
1694 switch(csiescseq.arg[0]) {
1696 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y, 1);
1697 if(term.c.y < term.row-1) {
1698 tclearregion(0, term.c.y+1, term.col-1,
1704 tclearregion(0, 0, term.col-1, term.c.y-1, 1);
1705 tclearregion(0, term.c.y, term.c.x, term.c.y, 1);
1708 tclearregion(0, 0, term.col-1, term.row-1, 1);
1714 case 'K': /* EL -- Clear line */
1715 switch(csiescseq.arg[0]) {
1717 tclearregion(term.c.x, term.c.y, term.col-1,
1721 tclearregion(0, term.c.y, term.c.x, term.c.y, 1);
1724 tclearregion(0, term.c.y, term.col-1, term.c.y, 1);
1728 case 'S': /* SU -- Scroll <n> line up */
1729 DEFAULT(csiescseq.arg[0], 1);
1730 tscrollup(term.top, csiescseq.arg[0]);
1732 case 'T': /* SD -- Scroll <n> line down */
1733 DEFAULT(csiescseq.arg[0], 1);
1734 tscrolldown(term.top, csiescseq.arg[0]);
1736 case 'L': /* IL -- Insert <n> blank lines */
1737 DEFAULT(csiescseq.arg[0], 1);
1738 tinsertblankline(csiescseq.arg[0]);
1740 case 'l': /* RM -- Reset Mode */
1741 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1743 case 'M': /* DL -- Delete <n> lines */
1744 DEFAULT(csiescseq.arg[0], 1);
1745 tdeleteline(csiescseq.arg[0]);
1747 case 'X': /* ECH -- Erase <n> char */
1748 DEFAULT(csiescseq.arg[0], 1);
1749 tclearregion(term.c.x, term.c.y,
1750 term.c.x + csiescseq.arg[0] - 1, term.c.y, 1);
1752 case 'P': /* DCH -- Delete <n> char */
1753 DEFAULT(csiescseq.arg[0], 1);
1754 tdeletechar(csiescseq.arg[0]);
1756 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1757 DEFAULT(csiescseq.arg[0], 1);
1758 while(csiescseq.arg[0]--)
1761 case 'd': /* VPA -- Move to <row> */
1762 DEFAULT(csiescseq.arg[0], 1);
1763 tmoveato(term.c.x, csiescseq.arg[0]-1);
1765 case 'h': /* SM -- Set terminal mode */
1766 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1768 case 'm': /* SGR -- Terminal attribute (color) */
1769 tsetattr(csiescseq.arg, csiescseq.narg);
1771 case 'r': /* DECSTBM -- Set Scrolling Region */
1772 if(csiescseq.priv) {
1775 DEFAULT(csiescseq.arg[0], 1);
1776 DEFAULT(csiescseq.arg[1], term.row);
1777 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1781 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1782 tcursor(CURSOR_SAVE);
1784 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1785 tcursor(CURSOR_LOAD);
1796 for(i = 0; i < csiescseq.len; i++) {
1797 c = csiescseq.buf[i] & 0xff;
1800 } else if(c == '\n') {
1802 } else if(c == '\r') {
1804 } else if(c == 0x1b) {
1807 printf("(%02x)", c);
1815 memset(&csiescseq, 0, sizeof(csiescseq));
1823 * TODO: make this being useful in case of color palette change.
1829 switch(strescseq.type) {
1830 case ']': /* OSC -- Operating System Command */
1836 * TODO: Handle special chars in string, like umlauts.
1839 XStoreName(xw.dpy, xw.win, strescseq.buf+2);
1843 XStoreName(xw.dpy, xw.win, strescseq.buf+1);
1845 case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
1848 fprintf(stderr, "erresc: unknown str ");
1853 case 'k': /* old title set compatibility */
1854 XStoreName(xw.dpy, xw.win, strescseq.buf);
1856 case 'P': /* DSC -- Device Control String */
1857 case '_': /* APC -- Application Program Command */
1858 case '^': /* PM -- Privacy Message */
1860 fprintf(stderr, "erresc: unknown str ");
1870 * TODO: Implement parsing like for CSI when required.
1871 * Format: ESC type cmd ';' arg0 [';' argn] ESC \
1881 printf("ESC%c", strescseq.type);
1882 for(i = 0; i < strescseq.len; i++) {
1883 c = strescseq.buf[i] & 0xff;
1886 } else if(c == '\n') {
1888 } else if(c == '\r') {
1890 } else if(c == 0x1b) {
1893 printf("(%02x)", c);
1901 memset(&strescseq, 0, sizeof(strescseq));
1905 tputtab(bool forward) {
1911 for(++x; x < term.col && !term.tabs[x]; ++x)
1916 for(--x; x > 0 && !term.tabs[x]; --x)
1919 tmoveto(x, term.c.y);
1923 techo(char *buf, int len) {
1924 for(; len > 0; buf++, len--) {
1927 if(c == '\033') { /* escape */
1930 } else if (c < '\x20') { /* control code */
1931 if(c != '\n' && c != '\r' && c != '\t') {
1945 tputc(char *c, int len) {
1947 bool control = ascii < '\x20' || ascii == 0177;
1950 if (xwrite(iofd, c, len) < 0) {
1951 fprintf(stderr, "Error writing in %s:%s\n",
1952 opt_io, strerror(errno));
1959 * STR sequences must be checked before anything else
1960 * because it can use some control codes as part of the sequence.
1962 if(term.esc & ESC_STR) {
1965 term.esc = ESC_START | ESC_STR_END;
1967 case '\a': /* backwards compatibility to xterm */
1972 if(strescseq.len + len < sizeof(strescseq.buf)) {
1973 memmove(&strescseq.buf[strescseq.len], c, len);
1974 strescseq.len += len;
1977 * Here is a bug in terminals. If the user never sends
1978 * some code to stop the str or esc command, then st
1979 * will stop responding. But this is better than
1980 * silently failing with unknown characters. At least
1981 * then users will report back.
1983 * In the case users ever get fixed, here is the code:
1995 * Actions of control codes must be performed as soon they arrive
1996 * because they can be embedded inside a control sequence, and
1997 * they must not cause conflicts with sequences.
2005 tmoveto(term.c.x-1, term.c.y);
2008 tmoveto(0, term.c.y);
2013 /* go to first col if the mode is set */
2014 tnewline(IS_SET(MODE_CRLF));
2016 case '\a': /* BEL */
2017 if(!(xw.state & WIN_FOCUSED))
2020 case '\033': /* ESC */
2022 term.esc = ESC_START;
2024 case '\016': /* SO */
2025 case '\017': /* SI */
2027 * Different charsets are hard to handle. Applications
2028 * should use the right alt charset escapes for the
2029 * only reason they still exist: line drawing. The
2030 * rest is incompatible history st should not support.
2033 case '\032': /* SUB */
2034 case '\030': /* CAN */
2037 case '\005': /* ENQ (IGNORED) */
2038 case '\000': /* NUL (IGNORED) */
2039 case '\021': /* XON (IGNORED) */
2040 case '\023': /* XOFF (IGNORED) */
2041 case 0177: /* DEL (IGNORED) */
2044 } else if(term.esc & ESC_START) {
2045 if(term.esc & ESC_CSI) {
2046 csiescseq.buf[csiescseq.len++] = ascii;
2047 if(BETWEEN(ascii, 0x40, 0x7E)
2048 || csiescseq.len >= ESC_BUF_SIZ) {
2050 csiparse(), csihandle();
2052 } else if(term.esc & ESC_STR_END) {
2056 } else if(term.esc & ESC_ALTCHARSET) {
2058 case '0': /* Line drawing set */
2059 term.c.attr.mode |= ATTR_GFX;
2061 case 'B': /* USASCII */
2062 term.c.attr.mode &= ~ATTR_GFX;
2064 case 'A': /* UK (IGNORED) */
2065 case '<': /* multinational charset (IGNORED) */
2066 case '5': /* Finnish (IGNORED) */
2067 case 'C': /* Finnish (IGNORED) */
2068 case 'K': /* German (IGNORED) */
2071 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2074 } else if(term.esc & ESC_TEST) {
2075 if(ascii == '8') { /* DEC screen alignment test. */
2076 char E[UTF_SIZ] = "E";
2079 for(x = 0; x < term.col; ++x) {
2080 for(y = 0; y < term.row; ++y)
2081 tsetchar(E, &term.c.attr, x, y);
2088 term.esc |= ESC_CSI;
2091 term.esc |= ESC_TEST;
2093 case 'P': /* DCS -- Device Control String */
2094 case '_': /* APC -- Application Program Command */
2095 case '^': /* PM -- Privacy Message */
2096 case ']': /* OSC -- Operating System Command */
2097 case 'k': /* old title set compatibility */
2099 strescseq.type = ascii;
2100 term.esc |= ESC_STR;
2102 case '(': /* set primary charset G0 */
2103 term.esc |= ESC_ALTCHARSET;
2105 case ')': /* set secondary charset G1 (IGNORED) */
2106 case '*': /* set tertiary charset G2 (IGNORED) */
2107 case '+': /* set quaternary charset G3 (IGNORED) */
2110 case 'D': /* IND -- Linefeed */
2111 if(term.c.y == term.bot) {
2112 tscrollup(term.top, 1);
2114 tmoveto(term.c.x, term.c.y+1);
2118 case 'E': /* NEL -- Next line */
2119 tnewline(1); /* always go to first col */
2122 case 'H': /* HTS -- Horizontal tab stop */
2123 term.tabs[term.c.x] = 1;
2126 case 'M': /* RI -- Reverse index */
2127 if(term.c.y == term.top) {
2128 tscrolldown(term.top, 1);
2130 tmoveto(term.c.x, term.c.y-1);
2134 case 'Z': /* DECID -- Identify Terminal */
2135 ttywrite(VT102ID, sizeof(VT102ID) - 1);
2138 case 'c': /* RIS -- Reset to inital state */
2143 case '=': /* DECPAM -- Application keypad */
2144 term.mode |= MODE_APPKEYPAD;
2147 case '>': /* DECPNM -- Normal keypad */
2148 term.mode &= ~MODE_APPKEYPAD;
2151 case '7': /* DECSC -- Save Cursor */
2152 tcursor(CURSOR_SAVE);
2155 case '8': /* DECRC -- Restore Cursor */
2156 tcursor(CURSOR_LOAD);
2159 case '\\': /* ST -- Stop */
2163 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2164 (uchar) ascii, isprint(ascii)? ascii:'.');
2169 * All characters which form part of a sequence are not
2175 * Display control codes only if we are in graphic mode
2177 if(control && !(term.c.attr.mode & ATTR_GFX))
2179 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
2181 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
2182 tnewline(1); /* always go to first col */
2184 if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col) {
2185 memmove(&term.line[term.c.y][term.c.x+1],
2186 &term.line[term.c.y][term.c.x],
2187 (term.col - term.c.x - 1) * sizeof(Glyph));
2190 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2191 if(term.c.x+1 < term.col) {
2192 tmoveto(term.c.x+1, term.c.y);
2194 term.c.state |= CURSOR_WRAPNEXT;
2199 tresize(int col, int row) {
2201 int minrow = MIN(row, term.row);
2202 int mincol = MIN(col, term.col);
2203 int slide = term.c.y - row + 1;
2206 if(col < 1 || row < 1)
2209 /* free unneeded rows */
2213 * slide screen to keep cursor where we expect it -
2214 * tscrollup would work here, but we can optimize to
2215 * memmove because we're freeing the earlier lines
2217 for(/* i = 0 */; i < slide; i++) {
2221 memmove(term.line, term.line + slide, row * sizeof(Line));
2222 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2224 for(i += row; i < term.row; i++) {
2229 /* resize to new height */
2230 term.line = xrealloc(term.line, row * sizeof(Line));
2231 term.alt = xrealloc(term.alt, row * sizeof(Line));
2232 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2233 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2235 /* resize each row to new width, zero-pad if needed */
2236 for(i = 0; i < minrow; i++) {
2238 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2239 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2240 for(x = mincol; x < col; x++) {
2241 term.line[i][x].state = 0;
2242 term.alt[i][x].state = 0;
2246 /* allocate any new rows */
2247 for(/* i == minrow */; i < row; i++) {
2249 term.line[i] = xcalloc(col, sizeof(Glyph));
2250 term.alt [i] = xcalloc(col, sizeof(Glyph));
2252 if(col > term.col) {
2253 bp = term.tabs + term.col;
2255 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2256 while(--bp > term.tabs && !*bp)
2258 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2261 /* update terminal size */
2264 /* reset scrolling region */
2265 tsetscroll(0, row-1);
2266 /* make use of the LIMIT in tmoveto */
2267 tmoveto(term.c.x, term.c.y);
2273 xresize(int col, int row) {
2274 xw.tw = MAX(1, col * xw.cw);
2275 xw.th = MAX(1, row * xw.ch);
2278 XFreePixmap(xw.dpy, xw.buf);
2279 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2280 DefaultDepth(xw.dpy, xw.scr));
2281 XSetForeground(xw.dpy, dc.gc, dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg].pixel);
2282 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
2285 XftDrawChange(xw.draw, xw.buf);
2291 XRenderColor color = { .alpha = 0 };
2293 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2294 for(i = 0; i < LEN(colorname); i++) {
2297 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
2298 die("Could not allocate color '%s'\n", colorname[i]);
2302 /* load colors [16-255] ; same colors as xterm */
2303 for(i = 16, r = 0; r < 6; r++) {
2304 for(g = 0; g < 6; g++) {
2305 for(b = 0; b < 6; b++) {
2306 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
2307 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
2308 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
2309 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
2310 die("Could not allocate color %d\n", i);
2317 for(r = 0; r < 24; r++, i++) {
2318 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
2319 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color,
2321 die("Could not allocate color %d\n", i);
2327 xtermclear(int col1, int row1, int col2, int row2) {
2328 XftDrawRect(xw.draw,
2329 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2330 borderpx + col1 * xw.cw,
2331 borderpx + row1 * xw.ch,
2332 (col2-col1+1) * xw.cw,
2333 (row2-row1+1) * xw.ch);
2337 * Absolute coordinates.
2340 xclear(int x1, int y1, int x2, int y2) {
2341 XftDrawRect(xw.draw,
2342 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
2343 x1, y1, x2-x1, y2-y1);
2348 XClassHint class = {opt_class ? opt_class : termname, termname};
2349 XWMHints wm = {.flags = InputHint, .input = 1};
2350 XSizeHints *sizeh = NULL;
2352 sizeh = XAllocSizeHints();
2353 if(xw.isfixed == False) {
2354 sizeh->flags = PSize | PResizeInc | PBaseSize;
2355 sizeh->height = xw.h;
2356 sizeh->width = xw.w;
2357 sizeh->height_inc = xw.ch;
2358 sizeh->width_inc = xw.cw;
2359 sizeh->base_height = 2 * borderpx;
2360 sizeh->base_width = 2 * borderpx;
2362 sizeh->flags = PMaxSize | PMinSize;
2363 sizeh->min_width = sizeh->max_width = xw.fw;
2364 sizeh->min_height = sizeh->max_height = xw.fh;
2367 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
2372 xloadfont(Font *f, FcPattern *pattern) {
2376 match = FcFontMatch(NULL, pattern, &result);
2380 if(!(f->set = FcFontSort(0, match, FcTrue, 0, &result))) {
2381 FcPatternDestroy(match);
2385 if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
2386 FcPatternDestroy(match);
2390 f->pattern = FcPatternDuplicate(pattern);
2392 f->ascent = f->match->ascent;
2393 f->descent = f->match->descent;
2395 f->rbearing = f->match->max_advance_width;
2397 f->height = f->match->height;
2398 f->width = f->lbearing + f->rbearing;
2404 xloadfonts(char *fontstr, int fontsize) {
2409 if(fontstr[0] == '-') {
2410 pattern = XftXlfdParse(fontstr, False, False);
2412 pattern = FcNameParse((FcChar8 *)fontstr);
2416 die("st: can't open font %s\n", fontstr);
2419 FcPatternDel(pattern, FC_PIXEL_SIZE);
2420 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2421 usedfontsize = fontsize;
2423 result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2424 if(result == FcResultMatch) {
2425 usedfontsize = (int)fontval;
2428 * Default font size is 12, if none given. This is to
2429 * have a known usedfontsize value.
2431 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2436 FcConfigSubstitute(0, pattern, FcMatchPattern);
2437 FcDefaultSubstitute(pattern);
2439 if(xloadfont(&dc.font, pattern))
2440 die("st: can't open font %s\n", fontstr);
2442 /* Setting character width and height. */
2443 xw.cw = dc.font.width;
2444 xw.ch = dc.font.height;
2446 FcPatternDel(pattern, FC_SLANT);
2447 FcPatternDel(pattern, FC_WEIGHT);
2448 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
2449 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2450 if(xloadfont(&dc.bfont, pattern))
2451 die("st: can't open font %s\n", fontstr);
2453 FcPatternDel(pattern, FC_SLANT);
2454 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2455 if(xloadfont(&dc.ibfont, pattern))
2456 die("st: can't open font %s\n", fontstr);
2458 FcPatternDel(pattern, FC_WEIGHT);
2459 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_MEDIUM);
2460 if(xloadfont(&dc.ifont, pattern))
2461 die("st: can't open font %s\n", fontstr);
2463 FcPatternDestroy(pattern);
2467 xunloadfonts(void) {
2471 * Free the loaded fonts in the font cache. This is done backwards
2474 for (i = 0, ip = frccur; i < frclen; i++, ip--) {
2477 XftFontClose(xw.dpy, frc[ip].font);
2482 XftFontClose(xw.dpy, dc.font.match);
2483 FcPatternDestroy(dc.font.pattern);
2484 FcFontSetDestroy(dc.font.set);
2485 XftFontClose(xw.dpy, dc.bfont.match);
2486 FcPatternDestroy(dc.bfont.pattern);
2487 FcFontSetDestroy(dc.bfont.set);
2488 XftFontClose(xw.dpy, dc.ifont.match);
2489 FcPatternDestroy(dc.ifont.pattern);
2490 FcFontSetDestroy(dc.ifont.set);
2491 XftFontClose(xw.dpy, dc.ibfont.match);
2492 FcPatternDestroy(dc.ibfont.pattern);
2493 FcFontSetDestroy(dc.ibfont.set);
2497 xzoom(const Arg *arg) {
2499 xloadfonts(usedfont, usedfontsize + arg->i);
2506 XSetWindowAttributes attrs;
2510 int sw, sh, major, minor;
2512 if(!(xw.dpy = XOpenDisplay(NULL)))
2513 die("Can't open display\n");
2514 xw.scr = XDefaultScreen(xw.dpy);
2515 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
2519 die("Could not init fontconfig.\n");
2521 usedfont = (opt_font == NULL)? font : opt_font;
2522 xloadfonts(usedfont, 0);
2525 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
2528 /* adjust fixed window geometry */
2530 sw = DisplayWidth(xw.dpy, xw.scr);
2531 sh = DisplayHeight(xw.dpy, xw.scr);
2533 xw.fx = sw + xw.fx - xw.fw - 1;
2535 xw.fy = sh + xw.fy - xw.fh - 1;
2540 /* window - default size */
2541 xw.h = 2 * borderpx + term.row * xw.ch;
2542 xw.w = 2 * borderpx + term.col * xw.cw;
2548 attrs.background_pixel = dc.col[defaultbg].pixel;
2549 attrs.border_pixel = dc.col[defaultbg].pixel;
2550 attrs.bit_gravity = NorthWestGravity;
2551 attrs.event_mask = FocusChangeMask | KeyPressMask
2552 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2553 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2554 attrs.colormap = xw.cmap;
2556 parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
2557 XRootWindow(xw.dpy, xw.scr);
2558 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2559 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2561 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2565 /* double buffering */
2567 if(XdbeQueryExtension(xw.dpy, &major, &minor)) {
2568 xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win,
2573 memset(&gcvalues, 0, sizeof(gcvalues));
2574 gcvalues.graphics_exposures = False;
2575 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
2577 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2578 DefaultDepth(xw.dpy, xw.scr));
2579 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
2580 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
2586 /* Xft rendering context */
2587 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
2590 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2591 XSetLocaleModifiers("@im=local");
2592 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2593 XSetLocaleModifiers("@im=");
2594 if((xw.xim = XOpenIM(xw.dpy,
2595 NULL, NULL, NULL)) == NULL) {
2596 die("XOpenIM failed. Could not open input"
2601 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2602 | XIMStatusNothing, XNClientWindow, xw.win,
2603 XNFocusWindow, xw.win, NULL);
2605 die("XCreateIC failed. Could not obtain input method.\n");
2607 /* white cursor, black outline */
2608 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2609 XDefineCursor(xw.dpy, xw.win, cursor);
2610 XRecolorCursor(xw.dpy, cursor,
2611 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2612 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2614 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2615 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
2616 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
2619 XMapWindow(xw.dpy, xw.win);
2625 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2626 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
2627 width = charlen * xw.cw, xp, i;
2629 int u8fl, u8fblen, u8cblen, doesexist;
2632 Font *font = &dc.font;
2634 FcPattern *fcpattern, *fontpattern;
2635 FcFontSet *fcsets[] = { NULL };
2636 FcCharSet *fccharset;
2637 Colour *fg = &dc.col[base.fg], *bg = &dc.col[base.bg],
2638 *temp, revfg, revbg;
2639 XRenderColor colfg, colbg;
2641 frcflags = FRC_NORMAL;
2643 if(base.mode & ATTR_BOLD) {
2644 if(BETWEEN(base.fg, 0, 7)) {
2645 /* basic system colors */
2646 fg = &dc.col[base.fg + 8];
2647 } else if(BETWEEN(base.fg, 16, 195)) {
2649 fg = &dc.col[base.fg + 36];
2650 } else if(BETWEEN(base.fg, 232, 251)) {
2652 fg = &dc.col[base.fg + 4];
2655 * Those ranges will not be brightened:
2656 * 8 - 15 – bright system colors
2657 * 196 - 231 – highest 256 color cube
2658 * 252 - 255 – brightest colors in greyscale
2661 frcflags = FRC_BOLD;
2664 if(base.mode & ATTR_ITALIC) {
2666 frcflags = FRC_ITALIC;
2668 if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
2670 frcflags = FRC_ITALICBOLD;
2673 if(IS_SET(MODE_REVERSE)) {
2674 if(fg == &dc.col[defaultfg]) {
2675 fg = &dc.col[defaultbg];
2677 colfg.red = ~fg->color.red;
2678 colfg.green = ~fg->color.green;
2679 colfg.blue = ~fg->color.blue;
2680 colfg.alpha = fg->color.alpha;
2681 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
2685 if(bg == &dc.col[defaultbg]) {
2686 bg = &dc.col[defaultfg];
2688 colbg.red = ~bg->color.red;
2689 colbg.green = ~bg->color.green;
2690 colbg.blue = ~bg->color.blue;
2691 colbg.alpha = bg->color.alpha;
2692 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
2697 if(base.mode & ATTR_REVERSE) {
2703 /* Intelligent cleaning up of the borders. */
2705 xclear(0, (y == 0)? 0 : winy, borderpx,
2706 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
2708 if(x + charlen >= term.col) {
2709 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
2710 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
2713 xclear(winx, 0, winx + width, borderpx);
2715 xclear(winx, winy + xw.ch, winx + width, xw.h);
2717 /* Clean up the region we want to draw to. */
2718 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
2720 fcsets[0] = font->set;
2721 for (xp = winx; bytelen > 0;) {
2723 * Search for the range in the to be printed string of glyphs
2724 * that are in the main font. Then print that range. If
2725 * some glyph is found that is not in the font, do the
2733 u8cblen = utf8decode(s, &u8char);
2737 doesexist = XftCharIndex(xw.dpy, font->match, u8char);
2738 if (!doesexist || bytelen <= 0) {
2747 XftDrawStringUtf8(xw.draw, fg,
2749 winy + font->ascent,
2752 xp += font->width * u8fl;
2764 /* Search the font cache. */
2765 for (i = 0; i < frclen; i++, frp--) {
2769 if (frc[frp].c == u8char
2770 && frc[frp].flags == frcflags) {
2775 /* Nothing was found. */
2778 * Nothing was found in the cache. Now use
2779 * some dozen of Fontconfig calls to get the
2780 * font for one single character.
2782 fcpattern = FcPatternDuplicate(font->pattern);
2783 fccharset = FcCharSetCreate();
2785 FcCharSetAddChar(fccharset, u8char);
2786 FcPatternAddCharSet(fcpattern, FC_CHARSET,
2788 FcPatternAddBool(fcpattern, FC_SCALABLE,
2791 FcConfigSubstitute(0, fcpattern,
2793 FcDefaultSubstitute(fcpattern);
2795 fontpattern = FcFontSetMatch(0, fcsets,
2796 FcTrue, fcpattern, &fcres);
2799 * Overwrite or create the new cache entry
2804 if (frccur >= LEN(frc))
2806 if (frclen > LEN(frc)) {
2808 XftFontClose(xw.dpy, frc[frccur].font);
2811 frc[frccur].font = XftFontOpenPattern(xw.dpy,
2813 frc[frccur].c = u8char;
2814 frc[frccur].flags = frcflags;
2816 FcPatternDestroy(fcpattern);
2817 FcCharSetDestroy(fccharset);
2822 XftDrawStringUtf8(xw.draw, fg, frc[frp].font,
2823 xp, winy + frc[frp].font->ascent,
2824 (FcChar8 *)u8c, u8cblen);
2830 XftDrawStringUtf8(xw.draw, fg, font->set, winx,
2831 winy + font->ascent, (FcChar8 *)s, bytelen);
2834 if(base.mode & ATTR_UNDERLINE) {
2835 XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
2842 static int oldx = 0, oldy = 0;
2844 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs, 0};
2846 LIMIT(oldx, 0, term.col-1);
2847 LIMIT(oldy, 0, term.row-1);
2849 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2850 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2852 /* remove the old cursor */
2853 if(term.line[oldy][oldx].state & GLYPH_SET) {
2854 sl = utf8size(term.line[oldy][oldx].c);
2855 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
2858 xtermclear(oldx, oldy, oldx, oldy);
2861 /* draw the new one */
2862 if(!(IS_SET(MODE_HIDE))) {
2863 if(!(xw.state & WIN_FOCUSED))
2866 if(IS_SET(MODE_REVERSE))
2867 g.mode |= ATTR_REVERSE, g.fg = defaultcs, g.bg = defaultfg;
2870 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2871 oldx = term.c.x, oldy = term.c.y;
2877 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
2881 redraw(int timeout) {
2882 struct timespec tv = {0, timeout * 1000};
2888 nanosleep(&tv, NULL);
2889 XSync(xw.dpy, False); /* necessary for a good tput flash */
2895 XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
2897 drawregion(0, 0, term.col, term.row);
2899 XdbeSwapBuffers(xw.dpy, swpinfo, 1);
2901 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
2903 XSetForeground(xw.dpy, dc.gc, dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg].pixel);
2908 drawregion(int x1, int y1, int x2, int y2) {
2909 int ic, ib, x, y, ox, sl;
2911 char buf[DRAW_BUF_SIZ];
2912 bool ena_sel = sel.bx != -1;
2914 if(sel.alt ^ IS_SET(MODE_ALTSCREEN))
2917 if(!(xw.state & WIN_VISIBLE))
2920 for(y = y1; y < y2; y++) {
2924 xtermclear(0, y, term.col, y);
2926 base = term.line[y][0];
2928 for(x = x1; x < x2; x++) {
2929 new = term.line[y][x];
2930 if(ena_sel && *(new.c) && selected(x, y))
2931 new.mode ^= ATTR_REVERSE;
2932 if(ib > 0 && (!(new.state & GLYPH_SET)
2933 || ATTRCMP(base, new)
2934 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
2935 xdraws(buf, base, ox, y, ic, ib);
2938 if(new.state & GLYPH_SET) {
2944 sl = utf8size(new.c);
2945 memcpy(buf+ib, new.c, sl);
2951 xdraws(buf, base, ox, y, ic, ib);
2957 expose(XEvent *ev) {
2958 XExposeEvent *e = &ev->xexpose;
2960 if(xw.state & WIN_REDRAW) {
2962 xw.state &= ~WIN_REDRAW;
2968 visibility(XEvent *ev) {
2969 XVisibilityEvent *e = &ev->xvisibility;
2971 if(e->state == VisibilityFullyObscured) {
2972 xw.state &= ~WIN_VISIBLE;
2973 } else if(!(xw.state & WIN_VISIBLE)) {
2974 /* need a full redraw for next Expose, not just a buf copy */
2975 xw.state |= WIN_VISIBLE | WIN_REDRAW;
2981 xw.state &= ~WIN_VISIBLE;
2985 xseturgency(int add) {
2986 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
2988 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
2989 XSetWMHints(xw.dpy, xw.win, h);
2995 XFocusChangeEvent *e = &ev->xfocus;
2997 if(e->mode == NotifyGrab)
3000 if(ev->type == FocusIn) {
3001 XSetICFocus(xw.xic);
3002 xw.state |= WIN_FOCUSED;
3005 XUnsetICFocus(xw.xic);
3006 xw.state &= ~WIN_FOCUSED;
3011 match(uint mask, uint state) {
3012 state &= ~(ignoremod);
3014 if(mask == XK_NO_MOD && state)
3016 if(mask != XK_ANY_MOD && mask != XK_NO_MOD && !state)
3018 if((state & mask) != state)
3024 numlock(const Arg *dummy) {
3029 kmap(KeySym k, uint state) {
3034 /* Check for mapped keys out of X11 function keys. */
3035 for(i = 0; i < LEN(mappedkeys); i++) {
3036 if(mappedkeys[i] == k)
3039 if(i == LEN(mappedkeys)) {
3040 if((k & 0xFFFF) < 0xFD00)
3044 for(kp = key; kp < key + LEN(key); kp++) {
3050 if(!match(mask, state))
3053 if(kp->appkey > 0) {
3054 if(!IS_SET(MODE_APPKEYPAD))
3056 if(term.numlock && kp->appkey == 2)
3058 } else if(kp->appkey < 0 && IS_SET(MODE_APPKEYPAD)) {
3062 if((kp->appcursor < 0 && IS_SET(MODE_APPCURSOR)) ||
3064 && !IS_SET(MODE_APPCURSOR))) {
3068 if((kp->crlf < 0 && IS_SET(MODE_CRLF)) ||
3069 (kp->crlf > 0 && !IS_SET(MODE_CRLF))) {
3080 kpress(XEvent *ev) {
3081 XKeyEvent *e = &ev->xkey;
3083 char xstr[31], buf[32], *customkey, *cp = buf;
3088 if (IS_SET(MODE_KBDLOCK))
3091 len = XmbLookupString(xw.xic, e, xstr, sizeof(xstr), &ksym, &status);
3092 e->state &= ~Mod2Mask;
3094 for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
3095 if(ksym == bp->keysym && match(bp->mod, e->state)) {
3096 bp->func(&(bp->arg));
3101 /* 2. custom keys from config.h */
3102 if((customkey = kmap(ksym, e->state))) {
3103 len = strlen(customkey);
3104 memcpy(buf, customkey, len);
3105 /* 2. hardcoded (overrides X lookup) */
3110 if (len == 1 && e->state & Mod1Mask)
3113 memcpy(cp, xstr, len);
3114 len = cp - buf + len;
3118 if(IS_SET(MODE_ECHO))
3124 cmessage(XEvent *e) {
3127 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
3129 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
3130 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
3131 xw.state |= WIN_FOCUSED;
3133 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
3134 xw.state &= ~WIN_FOCUSED;
3136 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
3137 /* Send SIGHUP to shell */
3144 cresize(int width, int height) {
3152 col = (xw.w - 2 * borderpx) / xw.cw;
3153 row = (xw.h - 2 * borderpx) / xw.ch;
3162 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
3165 cresize(e->xconfigure.width, e->xconfigure.height);
3172 int xfd = XConnectionNumber(xw.dpy), xev;
3173 struct timeval drawtimeout, *tv = NULL, now, last;
3175 gettimeofday(&last, NULL);
3177 for(xev = actionfps;;) {
3179 FD_SET(cmdfd, &rfd);
3181 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
3184 die("select failed: %s\n", SERRNO);
3187 gettimeofday(&now, NULL);
3188 drawtimeout.tv_sec = 0;
3189 drawtimeout.tv_usec = (1000/xfps) * 1000;
3192 if(FD_ISSET(cmdfd, &rfd))
3195 if(FD_ISSET(xfd, &rfd))
3198 if(TIMEDIFF(now, last) > \
3199 (xev ? (1000/xfps) : (1000/actionfps))) {
3200 while(XPending(xw.dpy)) {
3201 XNextEvent(xw.dpy, &ev);
3202 if(XFilterEvent(&ev, None))
3204 if(handler[ev.type])
3205 (handler[ev.type])(&ev);
3212 if(xev && !FD_ISSET(xfd, &rfd))
3214 if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd))
3221 main(int argc, char *argv[]) {
3222 int i, bitm, xr, yr;
3225 xw.fw = xw.fh = xw.fx = xw.fy = 0;
3228 for(i = 1; i < argc; i++) {
3229 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
3232 opt_class = argv[i];
3235 /* eat all remaining arguments */
3247 bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
3252 if(bitm & WidthValue)
3254 if(bitm & HeightValue)
3256 if(bitm & XNegative && xw.fx == 0)
3258 if(bitm & XNegative && xw.fy == 0)
3261 if(xw.fh != 0 && xw.fw != 0)
3270 opt_title = argv[i];
3277 opt_embed = argv[i];
3283 setlocale(LC_CTYPE, "");
3284 XSetLocaleModifiers("");