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>
36 #define Draw XftDraw *
37 #define Colour XftColor
38 #define Colourmap Colormap
42 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
44 #elif defined(__FreeBSD__) || defined(__DragonFly__)
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 {
91 enum cursor_movement {
109 MODE_MOUSEMOTION = 64,
115 MODE_APPCURSOR = 2048,
116 MODE_MOUSESGR = 4096,
123 ESC_STR = 4, /* DSC, OSC, PM, APC */
125 ESC_STR_END = 16, /* a final string was encountered */
126 ESC_TEST = 32, /* Enter in test mode */
135 enum selection_type {
140 enum selection_snap {
147 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
149 typedef unsigned char uchar;
150 typedef unsigned int uint;
151 typedef unsigned long ulong;
152 typedef unsigned short ushort;
155 char c[UTF_SIZ]; /* character code */
156 uchar mode; /* attribute flags */
157 ushort fg; /* foreground */
158 ushort bg; /* background */
164 Glyph attr; /* current char attributes */
170 /* CSI Escape sequence structs */
171 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
173 char buf[ESC_BUF_SIZ]; /* raw string */
174 int len; /* raw string length */
176 int arg[ESC_ARG_SIZ];
177 int narg; /* nb of args */
181 /* STR Escape sequence structs */
182 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
184 char type; /* ESC type ... */
185 char buf[STR_BUF_SIZ]; /* raw string */
186 int len; /* raw string length */
187 char *args[STR_ARG_SIZ];
188 int narg; /* nb of args */
191 /* Internal representation of the screen */
193 int row; /* nb row */
194 int col; /* nb col */
195 Line *line; /* screen */
196 Line *alt; /* alternate screen */
197 bool *dirty; /* dirtyness of lines */
198 TCursor c; /* cursor */
199 int top; /* top scroll limit */
200 int bot; /* bottom scroll limit */
201 int mode; /* terminal mode flags */
202 int esc; /* escape state flags */
203 bool numlock; /* lock numbers in keyboard */
207 /* Purely graphic info */
213 Atom xembed, wmdeletewin;
219 bool isfixed; /* is fixed geometry? */
220 int fx, fy, fw, fh; /* fixed geometry */
221 int tw, th; /* tty width and height */
222 int w, h; /* window width and height */
223 int ch; /* char height */
224 int cw; /* char width */
225 char state; /* focus, redraw, visible */
232 /* three valued logic variables: 0 indifferent, 1 on, -1 off */
233 signed char appkey; /* application keypad */
234 signed char appcursor; /* application cursor */
235 signed char crlf; /* crlf mode */
238 /* TODO: use better name for vars... */
251 struct timeval tclick1;
252 struct timeval tclick2;
265 void (*func)(const Arg *);
269 /* function definitions used in config.h */
270 static void clippaste(const Arg *);
271 static void numlock(const Arg *);
272 static void selpaste(const Arg *);
273 static void xzoom(const Arg *);
275 /* Config.h for applying patches and the configuration. */
291 /* Drawing Context */
293 Colour col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
294 Font font, bfont, ifont, ibfont;
298 static void die(const char *, ...);
299 static void draw(void);
300 static void redraw(int);
301 static void drawregion(int, int, int, int);
302 static void execsh(void);
303 static void sigchld(int);
304 static void run(void);
306 static void csidump(void);
307 static void csihandle(void);
308 static void csiparse(void);
309 static void csireset(void);
310 static void strdump(void);
311 static void strhandle(void);
312 static void strparse(void);
313 static void strreset(void);
315 static void tclearregion(int, int, int, int);
316 static void tcursor(int);
317 static void tdeletechar(int);
318 static void tdeleteline(int);
319 static void tinsertblank(int);
320 static void tinsertblankline(int);
321 static void tmoveto(int, int);
322 static void tmoveato(int x, int y);
323 static void tnew(int, int);
324 static void tnewline(int);
325 static void tputtab(bool);
326 static void tputc(char *, int);
327 static void treset(void);
328 static int tresize(int, int);
329 static void tscrollup(int, int);
330 static void tscrolldown(int, int);
331 static void tsetattr(int*, int);
332 static void tsetchar(char *, Glyph *, int, int);
333 static void tsetscroll(int, int);
334 static void tswapscreen(void);
335 static void tsetdirt(int, int);
336 static void tsetmode(bool, bool, int *, int);
337 static void tfulldirt(void);
338 static void techo(char *, int);
340 static inline bool match(uint, uint);
341 static void ttynew(void);
342 static void ttyread(void);
343 static void ttyresize(void);
344 static void ttywrite(const char *, size_t);
346 static void xdraws(char *, Glyph, int, int, int, int);
347 static void xhints(void);
348 static void xclear(int, int, int, int);
349 static void xdrawcursor(void);
350 static void xinit(void);
351 static void xloadcols(void);
352 static int xsetcolorname(int, const char *);
353 static int xloadfont(Font *, FcPattern *);
354 static void xloadfonts(char *, int);
355 static void xsettitle(char *);
356 static void xresettitle(void);
357 static void xseturgency(int);
358 static void xsetsel(char*);
359 static void xtermclear(int, int, int, int);
360 static void xunloadfonts(void);
361 static void xresize(int, int);
363 static void expose(XEvent *);
364 static void visibility(XEvent *);
365 static void unmap(XEvent *);
366 static char *kmap(KeySym, uint);
367 static void kpress(XEvent *);
368 static void cmessage(XEvent *);
369 static void cresize(int, int);
370 static void resize(XEvent *);
371 static void focus(XEvent *);
372 static void brelease(XEvent *);
373 static void bpress(XEvent *);
374 static void bmotion(XEvent *);
375 static void selnotify(XEvent *);
376 static void selclear(XEvent *);
377 static void selrequest(XEvent *);
379 static void selinit(void);
380 static inline bool selected(int, int);
381 static void selcopy(void);
382 static void selscroll(int, int);
383 static void selsnap(int, int *, int *, int);
385 static int utf8decode(char *, long *);
386 static int utf8encode(long *, char *);
387 static int utf8size(char *);
388 static int isfullutf8(char *, int);
390 static ssize_t xwrite(int, char *, size_t);
391 static void *xmalloc(size_t);
392 static void *xrealloc(void *, size_t);
393 static void *xcalloc(size_t, size_t);
395 static void (*handler[LASTEvent])(XEvent *) = {
397 [ClientMessage] = cmessage,
398 [ConfigureNotify] = resize,
399 [VisibilityNotify] = visibility,
400 [UnmapNotify] = unmap,
404 [MotionNotify] = bmotion,
405 [ButtonPress] = bpress,
406 [ButtonRelease] = brelease,
407 [SelectionClear] = selclear,
408 [SelectionNotify] = selnotify,
409 [SelectionRequest] = selrequest,
416 static CSIEscape csiescseq;
417 static STREscape strescseq;
420 static Selection sel;
421 static int iofd = -1;
422 static char **opt_cmd = NULL;
423 static char *opt_io = NULL;
424 static char *opt_title = NULL;
425 static char *opt_embed = NULL;
426 static char *opt_class = NULL;
427 static char *opt_font = NULL;
429 static char *usedfont = NULL;
430 static int usedfontsize = 0;
432 /* Font Ring Cache */
447 * Fontcache is a ring buffer, with frccur as current position and frclen as
448 * the current length of used elements.
451 static Fontcache frc[1024];
452 static int frccur = -1, frclen = 0;
455 xwrite(int fd, char *s, size_t len) {
459 ssize_t r = write(fd, s, len);
469 xmalloc(size_t len) {
470 void *p = malloc(len);
473 die("Out of memory\n");
479 xrealloc(void *p, size_t len) {
480 if((p = realloc(p, len)) == NULL)
481 die("Out of memory\n");
487 xcalloc(size_t nmemb, size_t size) {
488 void *p = calloc(nmemb, size);
491 die("Out of memory\n");
497 utf8decode(char *s, long *u) {
503 if(~c & B7) { /* 0xxxxxxx */
506 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
507 *u = c&(B4|B3|B2|B1|B0);
509 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
510 *u = c&(B3|B2|B1|B0);
512 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
519 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
521 if((c & (B7|B6)) != B7) /* 10xxxxxx */
524 *u |= c & (B5|B4|B3|B2|B1|B0);
527 if((n == 1 && *u < 0x80) ||
528 (n == 2 && *u < 0x800) ||
529 (n == 3 && *u < 0x10000) ||
530 (*u >= 0xD800 && *u <= 0xDFFF)) {
542 utf8encode(long *u, char *s) {
550 *sp = uc; /* 0xxxxxxx */
552 } else if(*u < 0x800) {
553 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
555 } else if(uc < 0x10000) {
556 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
558 } else if(uc <= 0x10FFFF) {
559 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
565 for(i=n,++sp; i>0; --i,++sp)
566 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
578 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
579 UTF-8 otherwise return 0 */
581 isfullutf8(char *s, int b) {
589 } else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1) {
591 } else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
593 ((b == 2) && (*c2&(B7|B6)) == B7))) {
595 } else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
597 ((b == 2) && (*c2&(B7|B6)) == B7) ||
598 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7))) {
611 } else if((c&(B7|B6|B5)) == (B7|B6)) {
613 } else if((c&(B7|B6|B5|B4)) == (B7|B6|B5)) {
622 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
623 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
627 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
628 if(sel.xtarget == None)
629 sel.xtarget = XA_STRING;
637 return LIMIT(x, 0, term.col-1);
645 return LIMIT(y, 0, term.row-1);
649 selected(int x, int y) {
652 if(sel.ey == y && sel.by == y) {
653 bx = MIN(sel.bx, sel.ex);
654 ex = MAX(sel.bx, sel.ex);
656 return BETWEEN(x, bx, ex);
659 if(sel.type == SEL_RECTANGULAR) {
660 return ((sel.b.y <= y && y <= sel.e.y)
661 && (sel.b.x <= x && x <= sel.e.x));
663 return ((sel.b.y < y && y < sel.e.y)
664 || (y == sel.e.y && x <= sel.e.x))
665 || (y == sel.b.y && x >= sel.b.x
666 && (x <= sel.e.x || sel.b.y != sel.e.y));
670 selsnap(int mode, int *x, int *y, int direction) {
673 while(*x > 0 && *x < term.col-1
674 && term.line[*y][*x + direction].c[0] != ' ') {
679 *x = (direction < 0) ? 0 : term.col - 1;
687 getbuttoninfo(XEvent *e) {
689 uint state = e->xbutton.state &~Button1Mask;
691 sel.alt = IS_SET(MODE_ALTSCREEN);
693 sel.ex = x2col(e->xbutton.x);
694 sel.ey = y2row(e->xbutton.y);
697 || (sel.by == sel.ey && sel.bx < sel.ex)) {
698 selsnap(sel.snap, &sel.bx, &sel.by, -1);
699 selsnap(sel.snap, &sel.ex, &sel.ey, +1);
701 selsnap(sel.snap, &sel.ex, &sel.ey, -1);
702 selsnap(sel.snap, &sel.bx, &sel.by, +1);
705 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
706 sel.b.y = MIN(sel.by, sel.ey);
707 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
708 sel.e.y = MAX(sel.by, sel.ey);
710 sel.type = SEL_REGULAR;
711 for(type = 1; type < LEN(selmasks); ++type) {
712 if(match(selmasks[type], state)) {
720 mousereport(XEvent *e) {
721 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
722 button = e->xbutton.button, state = e->xbutton.state,
725 static int ob, ox, oy;
728 if(e->xbutton.type == MotionNotify) {
729 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
733 } else if(!IS_SET(MODE_MOUSESGR)
734 && (e->xbutton.type == ButtonRelease
735 || button == AnyButton)) {
741 if(e->xbutton.type == ButtonPress) {
747 button += (state & ShiftMask ? 4 : 0)
748 + (state & Mod4Mask ? 8 : 0)
749 + (state & ControlMask ? 16 : 0);
752 if(IS_SET(MODE_MOUSESGR)) {
753 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
755 e->xbutton.type == ButtonRelease ? 'm' : 'M');
756 } else if(x < 223 && y < 223) {
757 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
758 32+button, 32+x+1, 32+y+1);
770 if(IS_SET(MODE_MOUSE)) {
772 } else if(e->xbutton.button == Button1) {
773 gettimeofday(&now, NULL);
775 /* Clear previous selection, logically and visually. */
778 tsetdirt(sel.b.y, sel.e.y);
782 sel.type = SEL_REGULAR;
783 sel.ex = sel.bx = x2col(e->xbutton.x);
784 sel.ey = sel.by = y2row(e->xbutton.y);
788 * If user clicks are fasst enough (e.g. below timeouts),
789 * we ignore if his hand slipped left or down and accidentally
790 * selected more; we are just snapping to whatever we're
793 if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
794 sel.snap = SNAP_LINE;
795 } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
796 sel.snap = SNAP_WORD;
800 selsnap(sel.snap, &sel.bx, &sel.by, -1);
801 selsnap(sel.snap, &sel.ex, &sel.ey, 1);
808 * Draw selection, unless it's regular and we don't want to
809 * make clicks visible
812 tsetdirt(sel.b.y, sel.e.y);
815 sel.tclick2 = sel.tclick1;
817 } else if(e->xbutton.button == Button4) {
819 } else if(e->xbutton.button == Button5) {
827 int x, y, bufsize, size;
833 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
834 ptr = str = xmalloc(bufsize);
836 /* append every set & selected glyph to the selection */
837 for(y = sel.b.y; y < sel.e.y + 1; y++) {
838 gp = &term.line[y][0];
839 last = gp + term.col;
841 while(--last >= gp && !(selected(last - gp, y) && \
842 strcmp(last->c, " ") != 0))
845 for(x = 0; gp <= last; x++, ++gp) {
849 size = utf8size(gp->c);
850 memcpy(ptr, gp->c, size);
855 * Copy and pasting of line endings is inconsistent
856 * in the inconsistent terminal and GUI world.
857 * The best solution seems like to produce '\n' when
858 * something is copied from st and convert '\n' to
859 * '\r', when something to be pasted is received by
861 * FIXME: Fix the computer world.
863 if(y < sel.e.y && !((gp-1)->mode & ATTR_WRAP))
872 selnotify(XEvent *e) {
873 ulong nitems, ofs, rem;
875 uchar *data, *last, *repl;
880 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
881 False, AnyPropertyType, &type, &format,
882 &nitems, &rem, &data)) {
883 fprintf(stderr, "Clipboard allocation failed\n");
888 * As seen in selcopy:
889 * Line endings are inconsistent in the terminal and GUI world
890 * copy and pasting. When receiving some selection data,
891 * replace all '\n' with '\r'.
892 * FIXME: Fix the computer world.
895 last = data + nitems * format / 8;
896 while((repl = memchr(repl, '\n', last - repl))) {
900 ttywrite((const char *)data, nitems * format / 8);
902 /* number of 32-bit chunks returned */
903 ofs += nitems * format / 32;
908 selpaste(const Arg *dummy) {
909 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
910 xw.win, CurrentTime);
914 clippaste(const Arg *dummy) {
917 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
918 XConvertSelection(xw.dpy, clipboard, sel.xtarget, XA_PRIMARY,
919 xw.win, CurrentTime);
923 selclear(XEvent *e) {
927 tsetdirt(sel.b.y, sel.e.y);
931 selrequest(XEvent *e) {
932 XSelectionRequestEvent *xsre;
934 Atom xa_targets, string;
936 xsre = (XSelectionRequestEvent *) e;
937 xev.type = SelectionNotify;
938 xev.requestor = xsre->requestor;
939 xev.selection = xsre->selection;
940 xev.target = xsre->target;
941 xev.time = xsre->time;
945 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
946 if(xsre->target == xa_targets) {
947 /* respond with the supported type */
948 string = sel.xtarget;
949 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
950 XA_ATOM, 32, PropModeReplace,
951 (uchar *) &string, 1);
952 xev.property = xsre->property;
953 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
954 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
955 xsre->target, 8, PropModeReplace,
956 (uchar *) sel.clip, strlen(sel.clip));
957 xev.property = xsre->property;
960 /* all done, send a notification to the listener */
961 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
962 fprintf(stderr, "Error sending SelectionNotify event\n");
967 /* register the selection for both the clipboard and the primary */
973 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
975 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
976 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
980 brelease(XEvent *e) {
981 if(IS_SET(MODE_MOUSE)) {
986 if(e->xbutton.button == Button2) {
988 } else if(e->xbutton.button == Button1) {
991 term.dirty[sel.ey] = 1;
992 if(sel.bx == sel.ex && sel.by == sel.ey) {
1001 bmotion(XEvent *e) {
1002 int oldey, oldex, oldsby, oldsey;
1004 if(IS_SET(MODE_MOUSE)) {
1018 if(oldey != sel.ey || oldex != sel.ex) {
1019 tsetdirt(MIN(sel.b.y, oldsby), MAX(sel.e.y, oldsey));
1024 die(const char *errstr, ...) {
1027 va_start(ap, errstr);
1028 vfprintf(stderr, errstr, ap);
1036 char *envshell = getenv("SHELL");
1037 const struct passwd *pass = getpwuid(getuid());
1038 char buf[sizeof(long) * 8 + 1];
1040 unsetenv("COLUMNS");
1042 unsetenv("TERMCAP");
1045 setenv("LOGNAME", pass->pw_name, 1);
1046 setenv("USER", pass->pw_name, 1);
1047 setenv("SHELL", pass->pw_shell, 0);
1048 setenv("HOME", pass->pw_dir, 0);
1051 snprintf(buf, sizeof(buf), "%lu", xw.win);
1052 setenv("WINDOWID", buf, 1);
1054 signal(SIGCHLD, SIG_DFL);
1055 signal(SIGHUP, SIG_DFL);
1056 signal(SIGINT, SIG_DFL);
1057 signal(SIGQUIT, SIG_DFL);
1058 signal(SIGTERM, SIG_DFL);
1059 signal(SIGALRM, SIG_DFL);
1061 DEFAULT(envshell, shell);
1062 setenv("TERM", termname, 1);
1063 args = opt_cmd ? opt_cmd : (char *[]){envshell, "-i", NULL};
1064 execvp(args[0], args);
1072 if(waitpid(pid, &stat, 0) < 0)
1073 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
1075 if(WIFEXITED(stat)) {
1076 exit(WEXITSTATUS(stat));
1085 struct winsize w = {term.row, term.col, 0, 0};
1087 /* seems to work fine on linux, openbsd and freebsd */
1088 if(openpty(&m, &s, NULL, NULL, &w) < 0)
1089 die("openpty failed: %s\n", SERRNO);
1091 switch(pid = fork()) {
1093 die("fork failed\n");
1096 setsid(); /* create a new process group */
1097 dup2(s, STDIN_FILENO);
1098 dup2(s, STDOUT_FILENO);
1099 dup2(s, STDERR_FILENO);
1100 if(ioctl(s, TIOCSCTTY, NULL) < 0)
1101 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
1109 signal(SIGCHLD, sigchld);
1111 iofd = (!strcmp(opt_io, "-")) ?
1113 open(opt_io, O_WRONLY | O_CREAT, 0666);
1115 fprintf(stderr, "Error opening %s:%s\n",
1116 opt_io, strerror(errno));
1126 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
1128 fprintf(stderr, "\n");
1133 static char buf[BUFSIZ];
1134 static int buflen = 0;
1137 int charsize; /* size of utf8 char in bytes */
1141 /* append read bytes to unprocessed bytes */
1142 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
1143 die("Couldn't read from shell: %s\n", SERRNO);
1145 /* process every complete utf8 char */
1148 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
1149 charsize = utf8decode(ptr, &utf8c);
1150 utf8encode(&utf8c, s);
1156 /* keep any uncomplete utf8 char for the next call */
1157 memmove(buf, ptr, buflen);
1161 ttywrite(const char *s, size_t n) {
1162 if(write(cmdfd, s, n) == -1)
1163 die("write error on tty: %s\n", SERRNO);
1170 w.ws_row = term.row;
1171 w.ws_col = term.col;
1172 w.ws_xpixel = xw.tw;
1173 w.ws_ypixel = xw.th;
1174 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
1175 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
1179 tsetdirt(int top, int bot) {
1182 LIMIT(top, 0, term.row-1);
1183 LIMIT(bot, 0, term.row-1);
1185 for(i = top; i <= bot; i++)
1191 tsetdirt(0, term.row-1);
1198 if(mode == CURSOR_SAVE) {
1200 } else if(mode == CURSOR_LOAD) {
1210 term.c = (TCursor){{
1214 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
1216 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1217 for(i = tabspaces; i < term.col; i += tabspaces)
1220 term.bot = term.row - 1;
1221 term.mode = MODE_WRAP;
1223 tclearregion(0, 0, term.col-1, term.row-1);
1225 tcursor(CURSOR_SAVE);
1229 tnew(int col, int row) {
1230 memset(&term, 0, sizeof(Term));
1239 Line *tmp = term.line;
1241 term.line = term.alt;
1243 term.mode ^= MODE_ALTSCREEN;
1248 tscrolldown(int orig, int n) {
1252 LIMIT(n, 0, term.bot-orig+1);
1254 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
1256 for(i = term.bot; i >= orig+n; i--) {
1257 temp = term.line[i];
1258 term.line[i] = term.line[i-n];
1259 term.line[i-n] = temp;
1262 term.dirty[i-n] = 1;
1269 tscrollup(int orig, int n) {
1272 LIMIT(n, 0, term.bot-orig+1);
1274 tclearregion(0, orig, term.col-1, orig+n-1);
1276 for(i = orig; i <= term.bot-n; i++) {
1277 temp = term.line[i];
1278 term.line[i] = term.line[i+n];
1279 term.line[i+n] = temp;
1282 term.dirty[i+n] = 1;
1285 selscroll(orig, -n);
1289 selscroll(int orig, int n) {
1293 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1294 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1298 if(sel.type == SEL_RECTANGULAR) {
1299 if(sel.by < term.top)
1301 if(sel.ey > term.bot)
1304 if(sel.by < term.top) {
1308 if(sel.ey > term.bot) {
1313 sel.b.y = sel.by, sel.b.x = sel.bx;
1314 sel.e.y = sel.ey, sel.e.x = sel.ex;
1319 tnewline(int first_col) {
1323 tscrollup(term.top, 1);
1327 tmoveto(first_col ? 0 : term.c.x, y);
1332 char *p = csiescseq.buf, *np;
1341 csiescseq.buf[csiescseq.len] = '\0';
1342 while(p < csiescseq.buf+csiescseq.len) {
1344 v = strtol(p, &np, 10);
1347 if(v == LONG_MAX || v == LONG_MIN)
1349 csiescseq.arg[csiescseq.narg++] = v;
1351 if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
1355 csiescseq.mode = *p;
1358 /* for absolute user moves, when decom is set */
1360 tmoveato(int x, int y) {
1361 tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
1365 tmoveto(int x, int y) {
1368 if(term.c.state & CURSOR_ORIGIN) {
1373 maxy = term.row - 1;
1375 LIMIT(x, 0, term.col-1);
1376 LIMIT(y, miny, maxy);
1377 term.c.state &= ~CURSOR_WRAPNEXT;
1383 tsetchar(char *c, Glyph *attr, int x, int y) {
1384 static char *vt100_0[62] = { /* 0x41 - 0x7e */
1385 "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
1386 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
1387 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
1388 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
1389 "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
1390 "", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
1391 "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
1392 "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
1396 * The table is proudly stolen from rxvt.
1398 if(attr->mode & ATTR_GFX) {
1399 if(c[0] >= 0x41 && c[0] <= 0x7e
1400 && vt100_0[c[0] - 0x41]) {
1401 c = vt100_0[c[0] - 0x41];
1406 term.line[y][x] = *attr;
1407 memcpy(term.line[y][x].c, c, UTF_SIZ);
1411 tclearregion(int x1, int y1, int x2, int y2) {
1415 temp = x1, x1 = x2, x2 = temp;
1417 temp = y1, y1 = y2, y2 = temp;
1419 LIMIT(x1, 0, term.col-1);
1420 LIMIT(x2, 0, term.col-1);
1421 LIMIT(y1, 0, term.row-1);
1422 LIMIT(y2, 0, term.row-1);
1424 for(y = y1; y <= y2; y++) {
1426 for(x = x1; x <= x2; x++) {
1427 term.line[y][x] = term.c.attr;
1428 memcpy(term.line[y][x].c, " ", 2);
1434 tdeletechar(int n) {
1435 int src = term.c.x + n;
1437 int size = term.col - src;
1439 term.dirty[term.c.y] = 1;
1441 if(src >= term.col) {
1442 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1446 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1447 size * sizeof(Glyph));
1448 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1452 tinsertblank(int n) {
1455 int size = term.col - dst;
1457 term.dirty[term.c.y] = 1;
1459 if(dst >= term.col) {
1460 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1464 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src],
1465 size * sizeof(Glyph));
1466 tclearregion(src, term.c.y, dst - 1, term.c.y);
1470 tinsertblankline(int n) {
1471 if(term.c.y < term.top || term.c.y > term.bot)
1474 tscrolldown(term.c.y, n);
1478 tdeleteline(int n) {
1479 if(term.c.y < term.top || term.c.y > term.bot)
1482 tscrollup(term.c.y, n);
1486 tsetattr(int *attr, int l) {
1489 for(i = 0; i < l; i++) {
1492 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE \
1493 | ATTR_BOLD | ATTR_ITALIC \
1495 term.c.attr.fg = defaultfg;
1496 term.c.attr.bg = defaultbg;
1499 term.c.attr.mode |= ATTR_BOLD;
1502 term.c.attr.mode |= ATTR_ITALIC;
1505 term.c.attr.mode |= ATTR_UNDERLINE;
1507 case 5: /* slow blink */
1508 case 6: /* rapid blink */
1509 term.c.attr.mode |= ATTR_BLINK;
1512 term.c.attr.mode |= ATTR_REVERSE;
1516 term.c.attr.mode &= ~ATTR_BOLD;
1519 term.c.attr.mode &= ~ATTR_ITALIC;
1522 term.c.attr.mode &= ~ATTR_UNDERLINE;
1526 term.c.attr.mode &= ~ATTR_BLINK;
1529 term.c.attr.mode &= ~ATTR_REVERSE;
1532 if(i + 2 < l && attr[i + 1] == 5) {
1534 if(BETWEEN(attr[i], 0, 255)) {
1535 term.c.attr.fg = attr[i];
1538 "erresc: bad fgcolor %d\n",
1543 "erresc(38): gfx attr %d unknown\n",
1548 term.c.attr.fg = defaultfg;
1551 if(i + 2 < l && attr[i + 1] == 5) {
1553 if(BETWEEN(attr[i], 0, 255)) {
1554 term.c.attr.bg = attr[i];
1557 "erresc: bad bgcolor %d\n",
1562 "erresc(48): gfx attr %d unknown\n",
1567 term.c.attr.bg = defaultbg;
1570 if(BETWEEN(attr[i], 30, 37)) {
1571 term.c.attr.fg = attr[i] - 30;
1572 } else if(BETWEEN(attr[i], 40, 47)) {
1573 term.c.attr.bg = attr[i] - 40;
1574 } else if(BETWEEN(attr[i], 90, 97)) {
1575 term.c.attr.fg = attr[i] - 90 + 8;
1576 } else if(BETWEEN(attr[i], 100, 107)) {
1577 term.c.attr.bg = attr[i] - 100 + 8;
1580 "erresc(default): gfx attr %d unknown\n",
1581 attr[i]), csidump();
1589 tsetscroll(int t, int b) {
1592 LIMIT(t, 0, term.row-1);
1593 LIMIT(b, 0, term.row-1);
1603 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1606 tsetmode(bool priv, bool set, int *args, int narg) {
1610 for(lim = args + narg; args < lim; ++args) {
1614 case 1: /* DECCKM -- Cursor key */
1615 MODBIT(term.mode, set, MODE_APPCURSOR);
1617 case 5: /* DECSCNM -- Reverse video */
1619 MODBIT(term.mode, set, MODE_REVERSE);
1620 if(mode != term.mode)
1621 redraw(REDRAW_TIMEOUT);
1623 case 6: /* DECOM -- Origin */
1624 MODBIT(term.c.state, set, CURSOR_ORIGIN);
1627 case 7: /* DECAWM -- Auto wrap */
1628 MODBIT(term.mode, set, MODE_WRAP);
1630 case 0: /* Error (IGNORED) */
1631 case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
1632 case 3: /* DECCOLM -- Column (IGNORED) */
1633 case 4: /* DECSCLM -- Scroll (IGNORED) */
1634 case 8: /* DECARM -- Auto repeat (IGNORED) */
1635 case 18: /* DECPFF -- Printer feed (IGNORED) */
1636 case 19: /* DECPEX -- Printer extent (IGNORED) */
1637 case 42: /* DECNRCM -- National characters (IGNORED) */
1638 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1640 case 25: /* DECTCEM -- Text Cursor Enable Mode */
1641 MODBIT(term.mode, !set, MODE_HIDE);
1643 case 1000: /* 1000,1002: enable xterm mouse report */
1644 MODBIT(term.mode, set, MODE_MOUSEBTN);
1645 MODBIT(term.mode, 0, MODE_MOUSEMOTION);
1648 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1649 MODBIT(term.mode, 0, MODE_MOUSEBTN);
1652 MODBIT(term.mode, set, MODE_MOUSESGR);
1655 MODBIT(term.mode, set, MODE_8BIT);
1657 case 1049: /* = 1047 and 1048 */
1660 if (!allowaltscreen)
1663 alt = IS_SET(MODE_ALTSCREEN);
1665 tclearregion(0, 0, term.col-1,
1668 if(set ^ alt) /* set is always 1 or 0 */
1674 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1678 "erresc: unknown private set/reset mode %d\n",
1684 case 0: /* Error (IGNORED) */
1686 case 2: /* KAM -- keyboard action */
1687 MODBIT(term.mode, set, MODE_KBDLOCK);
1689 case 4: /* IRM -- Insertion-replacement */
1690 MODBIT(term.mode, set, MODE_INSERT);
1692 case 12: /* SRM -- Send/Receive */
1693 MODBIT(term.mode, !set, MODE_ECHO);
1695 case 20: /* LNM -- Linefeed/new line */
1696 MODBIT(term.mode, set, MODE_CRLF);
1700 "erresc: unknown set/reset mode %d\n",
1712 switch(csiescseq.mode) {
1715 fprintf(stderr, "erresc: unknown csi ");
1719 case '@': /* ICH -- Insert <n> blank char */
1720 DEFAULT(csiescseq.arg[0], 1);
1721 tinsertblank(csiescseq.arg[0]);
1723 case 'A': /* CUU -- Cursor <n> Up */
1724 DEFAULT(csiescseq.arg[0], 1);
1725 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1727 case 'B': /* CUD -- Cursor <n> Down */
1728 case 'e': /* VPR --Cursor <n> Down */
1729 DEFAULT(csiescseq.arg[0], 1);
1730 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1732 case 'c': /* DA -- Device Attributes */
1733 if(csiescseq.arg[0] == 0)
1734 ttywrite(VT102ID, sizeof(VT102ID) - 1);
1736 case 'C': /* CUF -- Cursor <n> Forward */
1737 case 'a': /* HPR -- Cursor <n> Forward */
1738 DEFAULT(csiescseq.arg[0], 1);
1739 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1741 case 'D': /* CUB -- Cursor <n> Backward */
1742 DEFAULT(csiescseq.arg[0], 1);
1743 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1745 case 'E': /* CNL -- Cursor <n> Down and first col */
1746 DEFAULT(csiescseq.arg[0], 1);
1747 tmoveto(0, term.c.y+csiescseq.arg[0]);
1749 case 'F': /* CPL -- Cursor <n> Up and first col */
1750 DEFAULT(csiescseq.arg[0], 1);
1751 tmoveto(0, term.c.y-csiescseq.arg[0]);
1753 case 'g': /* TBC -- Tabulation clear */
1754 switch(csiescseq.arg[0]) {
1755 case 0: /* clear current tab stop */
1756 term.tabs[term.c.x] = 0;
1758 case 3: /* clear all the tabs */
1759 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1765 case 'G': /* CHA -- Move to <col> */
1767 DEFAULT(csiescseq.arg[0], 1);
1768 tmoveto(csiescseq.arg[0]-1, term.c.y);
1770 case 'H': /* CUP -- Move to <row> <col> */
1772 DEFAULT(csiescseq.arg[0], 1);
1773 DEFAULT(csiescseq.arg[1], 1);
1774 tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1776 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1777 DEFAULT(csiescseq.arg[0], 1);
1778 while(csiescseq.arg[0]--)
1781 case 'J': /* ED -- Clear screen */
1783 switch(csiescseq.arg[0]) {
1785 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1786 if(term.c.y < term.row-1) {
1787 tclearregion(0, term.c.y+1, term.col-1,
1793 tclearregion(0, 0, term.col-1, term.c.y-1);
1794 tclearregion(0, term.c.y, term.c.x, term.c.y);
1797 tclearregion(0, 0, term.col-1, term.row-1);
1803 case 'K': /* EL -- Clear line */
1804 switch(csiescseq.arg[0]) {
1806 tclearregion(term.c.x, term.c.y, term.col-1,
1810 tclearregion(0, term.c.y, term.c.x, term.c.y);
1813 tclearregion(0, term.c.y, term.col-1, term.c.y);
1817 case 'S': /* SU -- Scroll <n> line up */
1818 DEFAULT(csiescseq.arg[0], 1);
1819 tscrollup(term.top, csiescseq.arg[0]);
1821 case 'T': /* SD -- Scroll <n> line down */
1822 DEFAULT(csiescseq.arg[0], 1);
1823 tscrolldown(term.top, csiescseq.arg[0]);
1825 case 'L': /* IL -- Insert <n> blank lines */
1826 DEFAULT(csiescseq.arg[0], 1);
1827 tinsertblankline(csiescseq.arg[0]);
1829 case 'l': /* RM -- Reset Mode */
1830 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1832 case 'M': /* DL -- Delete <n> lines */
1833 DEFAULT(csiescseq.arg[0], 1);
1834 tdeleteline(csiescseq.arg[0]);
1836 case 'X': /* ECH -- Erase <n> char */
1837 DEFAULT(csiescseq.arg[0], 1);
1838 tclearregion(term.c.x, term.c.y,
1839 term.c.x + csiescseq.arg[0] - 1, term.c.y);
1841 case 'P': /* DCH -- Delete <n> char */
1842 DEFAULT(csiescseq.arg[0], 1);
1843 tdeletechar(csiescseq.arg[0]);
1845 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1846 DEFAULT(csiescseq.arg[0], 1);
1847 while(csiescseq.arg[0]--)
1850 case 'd': /* VPA -- Move to <row> */
1851 DEFAULT(csiescseq.arg[0], 1);
1852 tmoveato(term.c.x, csiescseq.arg[0]-1);
1854 case 'h': /* SM -- Set terminal mode */
1855 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1857 case 'm': /* SGR -- Terminal attribute (color) */
1858 tsetattr(csiescseq.arg, csiescseq.narg);
1860 case 'r': /* DECSTBM -- Set Scrolling Region */
1861 if(csiescseq.priv) {
1864 DEFAULT(csiescseq.arg[0], 1);
1865 DEFAULT(csiescseq.arg[1], term.row);
1866 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1870 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1871 tcursor(CURSOR_SAVE);
1873 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1874 tcursor(CURSOR_LOAD);
1885 for(i = 0; i < csiescseq.len; i++) {
1886 c = csiescseq.buf[i] & 0xff;
1889 } else if(c == '\n') {
1891 } else if(c == '\r') {
1893 } else if(c == 0x1b) {
1896 printf("(%02x)", c);
1904 memset(&csiescseq, 0, sizeof(csiescseq));
1913 narg = strescseq.narg;
1915 switch(strescseq.type) {
1916 case ']': /* OSC -- Operating System Command */
1917 switch(i = atoi(strescseq.args[0])) {
1922 xsettitle(strescseq.args[1]);
1924 case 4: /* color set */
1927 p = strescseq.args[2];
1929 case 104: /* color reset, here p = NULL */
1930 j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
1931 if (!xsetcolorname(j, p)) {
1932 fprintf(stderr, "erresc: invalid color %s\n", p);
1935 * TODO if defaultbg color is changed, borders
1942 fprintf(stderr, "erresc: unknown str ");
1947 case 'k': /* old title set compatibility */
1948 xsettitle(strescseq.args[0]);
1950 case 'P': /* DSC -- Device Control String */
1951 case '_': /* APC -- Application Program Command */
1952 case '^': /* PM -- Privacy Message */
1954 fprintf(stderr, "erresc: unknown str ");
1963 char *p = strescseq.buf;
1966 strescseq.buf[strescseq.len] = '\0';
1967 while(p && strescseq.narg < STR_ARG_SIZ)
1968 strescseq.args[strescseq.narg++] = strsep(&p, ";");
1976 printf("ESC%c", strescseq.type);
1977 for(i = 0; i < strescseq.len; i++) {
1978 c = strescseq.buf[i] & 0xff;
1981 } else if(isprint(c)) {
1983 } else if(c == '\n') {
1985 } else if(c == '\r') {
1987 } else if(c == 0x1b) {
1990 printf("(%02x)", c);
1998 memset(&strescseq, 0, sizeof(strescseq));
2002 tputtab(bool forward) {
2008 for(++x; x < term.col && !term.tabs[x]; ++x)
2013 for(--x; x > 0 && !term.tabs[x]; --x)
2016 tmoveto(x, term.c.y);
2020 techo(char *buf, int len) {
2021 for(; len > 0; buf++, len--) {
2024 if(c == '\033') { /* escape */
2027 } else if(c < '\x20') { /* control code */
2028 if(c != '\n' && c != '\r' && c != '\t') {
2042 tputc(char *c, int len) {
2044 bool control = ascii < '\x20' || ascii == 0177;
2047 if(xwrite(iofd, c, len) < 0) {
2048 fprintf(stderr, "Error writing in %s:%s\n",
2049 opt_io, strerror(errno));
2056 * STR sequences must be checked before anything else
2057 * because it can use some control codes as part of the sequence.
2059 if(term.esc & ESC_STR) {
2062 term.esc = ESC_START | ESC_STR_END;
2064 case '\a': /* backwards compatibility to xterm */
2069 if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
2070 memmove(&strescseq.buf[strescseq.len], c, len);
2071 strescseq.len += len;
2074 * Here is a bug in terminals. If the user never sends
2075 * some code to stop the str or esc command, then st
2076 * will stop responding. But this is better than
2077 * silently failing with unknown characters. At least
2078 * then users will report back.
2080 * In the case users ever get fixed, here is the code:
2092 * Actions of control codes must be performed as soon they arrive
2093 * because they can be embedded inside a control sequence, and
2094 * they must not cause conflicts with sequences.
2102 tmoveto(term.c.x-1, term.c.y);
2105 tmoveto(0, term.c.y);
2110 /* go to first col if the mode is set */
2111 tnewline(IS_SET(MODE_CRLF));
2113 case '\a': /* BEL */
2114 if(!(xw.state & WIN_FOCUSED))
2117 case '\033': /* ESC */
2119 term.esc = ESC_START;
2121 case '\016': /* SO */
2122 case '\017': /* SI */
2124 * Different charsets are hard to handle. Applications
2125 * should use the right alt charset escapes for the
2126 * only reason they still exist: line drawing. The
2127 * rest is incompatible history st should not support.
2130 case '\032': /* SUB */
2131 case '\030': /* CAN */
2134 case '\005': /* ENQ (IGNORED) */
2135 case '\000': /* NUL (IGNORED) */
2136 case '\021': /* XON (IGNORED) */
2137 case '\023': /* XOFF (IGNORED) */
2138 case 0177: /* DEL (IGNORED) */
2141 } else if(term.esc & ESC_START) {
2142 if(term.esc & ESC_CSI) {
2143 csiescseq.buf[csiescseq.len++] = ascii;
2144 if(BETWEEN(ascii, 0x40, 0x7E)
2145 || csiescseq.len >= \
2146 sizeof(csiescseq.buf)-1) {
2151 } else if(term.esc & ESC_STR_END) {
2155 } else if(term.esc & ESC_ALTCHARSET) {
2157 case '0': /* Line drawing set */
2158 term.c.attr.mode |= ATTR_GFX;
2160 case 'B': /* USASCII */
2161 term.c.attr.mode &= ~ATTR_GFX;
2163 case 'A': /* UK (IGNORED) */
2164 case '<': /* multinational charset (IGNORED) */
2165 case '5': /* Finnish (IGNORED) */
2166 case 'C': /* Finnish (IGNORED) */
2167 case 'K': /* German (IGNORED) */
2170 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
2173 } else if(term.esc & ESC_TEST) {
2174 if(ascii == '8') { /* DEC screen alignment test. */
2175 char E[UTF_SIZ] = "E";
2178 for(x = 0; x < term.col; ++x) {
2179 for(y = 0; y < term.row; ++y)
2180 tsetchar(E, &term.c.attr, x, y);
2187 term.esc |= ESC_CSI;
2190 term.esc |= ESC_TEST;
2192 case 'P': /* DCS -- Device Control String */
2193 case '_': /* APC -- Application Program Command */
2194 case '^': /* PM -- Privacy Message */
2195 case ']': /* OSC -- Operating System Command */
2196 case 'k': /* old title set compatibility */
2198 strescseq.type = ascii;
2199 term.esc |= ESC_STR;
2201 case '(': /* set primary charset G0 */
2202 term.esc |= ESC_ALTCHARSET;
2204 case ')': /* set secondary charset G1 (IGNORED) */
2205 case '*': /* set tertiary charset G2 (IGNORED) */
2206 case '+': /* set quaternary charset G3 (IGNORED) */
2209 case 'D': /* IND -- Linefeed */
2210 if(term.c.y == term.bot) {
2211 tscrollup(term.top, 1);
2213 tmoveto(term.c.x, term.c.y+1);
2217 case 'E': /* NEL -- Next line */
2218 tnewline(1); /* always go to first col */
2221 case 'H': /* HTS -- Horizontal tab stop */
2222 term.tabs[term.c.x] = 1;
2225 case 'M': /* RI -- Reverse index */
2226 if(term.c.y == term.top) {
2227 tscrolldown(term.top, 1);
2229 tmoveto(term.c.x, term.c.y-1);
2233 case 'Z': /* DECID -- Identify Terminal */
2234 ttywrite(VT102ID, sizeof(VT102ID) - 1);
2237 case 'c': /* RIS -- Reset to inital state */
2242 case '=': /* DECPAM -- Application keypad */
2243 term.mode |= MODE_APPKEYPAD;
2246 case '>': /* DECPNM -- Normal keypad */
2247 term.mode &= ~MODE_APPKEYPAD;
2250 case '7': /* DECSC -- Save Cursor */
2251 tcursor(CURSOR_SAVE);
2254 case '8': /* DECRC -- Restore Cursor */
2255 tcursor(CURSOR_LOAD);
2258 case '\\': /* ST -- Stop */
2262 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
2263 (uchar) ascii, isprint(ascii)? ascii:'.');
2268 * All characters which form part of a sequence are not
2274 * Display control codes only if we are in graphic mode
2276 if(control && !(term.c.attr.mode & ATTR_GFX))
2278 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
2280 if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
2281 term.line[term.c.y][term.c.x].mode |= ATTR_WRAP;
2285 if(IS_SET(MODE_INSERT) && term.c.x+1 < term.col) {
2286 memmove(&term.line[term.c.y][term.c.x+1],
2287 &term.line[term.c.y][term.c.x],
2288 (term.col - term.c.x - 1) * sizeof(Glyph));
2291 tsetchar(c, &term.c.attr, term.c.x, term.c.y);
2292 if(term.c.x+1 < term.col) {
2293 tmoveto(term.c.x+1, term.c.y);
2295 term.c.state |= CURSOR_WRAPNEXT;
2300 tresize(int col, int row) {
2302 int minrow = MIN(row, term.row);
2303 int mincol = MIN(col, term.col);
2304 int slide = term.c.y - row + 1;
2308 if(col < 1 || row < 1)
2311 /* free unneeded rows */
2315 * slide screen to keep cursor where we expect it -
2316 * tscrollup would work here, but we can optimize to
2317 * memmove because we're freeing the earlier lines
2319 for(/* i = 0 */; i < slide; i++) {
2323 memmove(term.line, term.line + slide, row * sizeof(Line));
2324 memmove(term.alt, term.alt + slide, row * sizeof(Line));
2326 for(i += row; i < term.row; i++) {
2331 /* resize to new height */
2332 term.line = xrealloc(term.line, row * sizeof(Line));
2333 term.alt = xrealloc(term.alt, row * sizeof(Line));
2334 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
2335 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
2337 /* resize each row to new width, zero-pad if needed */
2338 for(i = 0; i < minrow; i++) {
2340 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
2341 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
2344 /* allocate any new rows */
2345 for(/* i == minrow */; i < row; i++) {
2347 term.line[i] = xcalloc(col, sizeof(Glyph));
2348 term.alt [i] = xcalloc(col, sizeof(Glyph));
2350 if(col > term.col) {
2351 bp = term.tabs + term.col;
2353 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
2354 while(--bp > term.tabs && !*bp)
2356 for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
2359 /* update terminal size */
2362 /* reset scrolling region */
2363 tsetscroll(0, row-1);
2364 /* make use of the LIMIT in tmoveto */
2365 tmoveto(term.c.x, term.c.y);
2366 /* Clearing both screens */
2369 if(mincol < col && 0 < minrow) {
2370 tclearregion(mincol, 0, col - 1, minrow - 1);
2372 if(0 < col && minrow < row) {
2373 tclearregion(0, minrow, col - 1, row - 1);
2376 } while(orig != term.line);
2382 xresize(int col, int row) {
2383 xw.tw = MAX(1, col * xw.cw);
2384 xw.th = MAX(1, row * xw.ch);
2386 XFreePixmap(xw.dpy, xw.buf);
2387 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2388 DefaultDepth(xw.dpy, xw.scr));
2389 XftDrawChange(xw.draw, xw.buf);
2390 xclear(0, 0, xw.w, xw.h);
2393 static inline ushort
2394 sixd_to_16bit(int x) {
2395 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
2401 XRenderColor color = { .alpha = 0xffff };
2403 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
2404 for(i = 0; i < LEN(colorname); i++) {
2407 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
2408 die("Could not allocate color '%s'\n", colorname[i]);
2412 /* load colors [16-255] ; same colors as xterm */
2413 for(i = 16, r = 0; r < 6; r++) {
2414 for(g = 0; g < 6; g++) {
2415 for(b = 0; b < 6; b++) {
2416 color.red = sixd_to_16bit(r);
2417 color.green = sixd_to_16bit(g);
2418 color.blue = sixd_to_16bit(b);
2419 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i])) {
2420 die("Could not allocate color %d\n", i);
2427 for(r = 0; r < 24; r++, i++) {
2428 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
2429 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color,
2431 die("Could not allocate color %d\n", i);
2437 xsetcolorname(int x, const char *name) {
2438 XRenderColor color = { .alpha = 0xffff };
2440 if (x < 0 || x > LEN(colorname))
2443 if(16 <= x && x < 16 + 216) {
2444 int r = (x - 16) / 36, g = ((x - 16) % 36) / 6, b = (x - 16) % 6;
2445 color.red = sixd_to_16bit(r);
2446 color.green = sixd_to_16bit(g);
2447 color.blue = sixd_to_16bit(b);
2448 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2449 return 0; /* something went wrong */
2452 } else if (16 + 216 <= x && x < 256) {
2453 color.red = color.green = color.blue = 0x0808 + 0x0a0a * (x - (16 + 216));
2454 if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
2455 return 0; /* something went wrong */
2459 name = colorname[x];
2462 if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &colour))
2469 xtermclear(int col1, int row1, int col2, int row2) {
2470 XftDrawRect(xw.draw,
2471 &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
2472 borderpx + col1 * xw.cw,
2473 borderpx + row1 * xw.ch,
2474 (col2-col1+1) * xw.cw,
2475 (row2-row1+1) * xw.ch);
2479 * Absolute coordinates.
2482 xclear(int x1, int y1, int x2, int y2) {
2483 XftDrawRect(xw.draw,
2484 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
2485 x1, y1, x2-x1, y2-y1);
2490 XClassHint class = {opt_class ? opt_class : termname, termname};
2491 XWMHints wm = {.flags = InputHint, .input = 1};
2492 XSizeHints *sizeh = NULL;
2494 sizeh = XAllocSizeHints();
2495 if(xw.isfixed == False) {
2496 sizeh->flags = PSize | PResizeInc | PBaseSize;
2497 sizeh->height = xw.h;
2498 sizeh->width = xw.w;
2499 sizeh->height_inc = xw.ch;
2500 sizeh->width_inc = xw.cw;
2501 sizeh->base_height = 2 * borderpx;
2502 sizeh->base_width = 2 * borderpx;
2504 sizeh->flags = PMaxSize | PMinSize;
2505 sizeh->min_width = sizeh->max_width = xw.fw;
2506 sizeh->min_height = sizeh->max_height = xw.fh;
2509 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
2514 xloadfont(Font *f, FcPattern *pattern) {
2518 match = FcFontMatch(NULL, pattern, &result);
2522 if(!(f->set = FcFontSort(0, match, FcTrue, 0, &result))) {
2523 FcPatternDestroy(match);
2527 if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
2528 FcPatternDestroy(match);
2532 f->pattern = FcPatternDuplicate(pattern);
2534 f->ascent = f->match->ascent;
2535 f->descent = f->match->descent;
2537 f->rbearing = f->match->max_advance_width;
2539 f->height = f->ascent + f->descent;
2540 f->width = f->lbearing + f->rbearing;
2546 xloadfonts(char *fontstr, int fontsize) {
2551 if(fontstr[0] == '-') {
2552 pattern = XftXlfdParse(fontstr, False, False);
2554 pattern = FcNameParse((FcChar8 *)fontstr);
2558 die("st: can't open font %s\n", fontstr);
2561 FcPatternDel(pattern, FC_PIXEL_SIZE);
2562 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
2563 usedfontsize = fontsize;
2565 result = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
2566 if(result == FcResultMatch) {
2567 usedfontsize = (int)fontval;
2570 * Default font size is 12, if none given. This is to
2571 * have a known usedfontsize value.
2573 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
2578 FcConfigSubstitute(0, pattern, FcMatchPattern);
2579 FcDefaultSubstitute(pattern);
2581 if(xloadfont(&dc.font, pattern))
2582 die("st: can't open font %s\n", fontstr);
2584 /* Setting character width and height. */
2585 xw.cw = dc.font.width;
2586 xw.ch = dc.font.height;
2588 FcPatternDel(pattern, FC_SLANT);
2589 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
2590 if(xloadfont(&dc.ifont, pattern))
2591 die("st: can't open font %s\n", fontstr);
2593 FcPatternDel(pattern, FC_WEIGHT);
2594 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
2595 if(xloadfont(&dc.ibfont, pattern))
2596 die("st: can't open font %s\n", fontstr);
2598 FcPatternDel(pattern, FC_SLANT);
2599 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
2600 if(xloadfont(&dc.bfont, pattern))
2601 die("st: can't open font %s\n", fontstr);
2603 FcPatternDestroy(pattern);
2607 xunloadfonts(void) {
2611 * Free the loaded fonts in the font cache. This is done backwards
2614 for(i = 0, ip = frccur; i < frclen; i++, ip--) {
2617 XftFontClose(xw.dpy, frc[ip].font);
2622 XftFontClose(xw.dpy, dc.font.match);
2623 FcPatternDestroy(dc.font.pattern);
2624 FcFontSetDestroy(dc.font.set);
2625 XftFontClose(xw.dpy, dc.bfont.match);
2626 FcPatternDestroy(dc.bfont.pattern);
2627 FcFontSetDestroy(dc.bfont.set);
2628 XftFontClose(xw.dpy, dc.ifont.match);
2629 FcPatternDestroy(dc.ifont.pattern);
2630 FcFontSetDestroy(dc.ifont.set);
2631 XftFontClose(xw.dpy, dc.ibfont.match);
2632 FcPatternDestroy(dc.ibfont.pattern);
2633 FcFontSetDestroy(dc.ibfont.set);
2637 xzoom(const Arg *arg) {
2639 xloadfonts(usedfont, usedfontsize + arg->i);
2646 XSetWindowAttributes attrs;
2652 if(!(xw.dpy = XOpenDisplay(NULL)))
2653 die("Can't open display\n");
2654 xw.scr = XDefaultScreen(xw.dpy);
2655 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
2659 die("Could not init fontconfig.\n");
2661 usedfont = (opt_font == NULL)? font : opt_font;
2662 xloadfonts(usedfont, 0);
2665 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
2668 /* adjust fixed window geometry */
2670 sw = DisplayWidth(xw.dpy, xw.scr);
2671 sh = DisplayHeight(xw.dpy, xw.scr);
2673 xw.fx = sw + xw.fx - xw.fw - 1;
2675 xw.fy = sh + xw.fy - xw.fh - 1;
2680 /* window - default size */
2681 xw.h = 2 * borderpx + term.row * xw.ch;
2682 xw.w = 2 * borderpx + term.col * xw.cw;
2688 attrs.background_pixel = dc.col[defaultbg].pixel;
2689 attrs.border_pixel = dc.col[defaultbg].pixel;
2690 attrs.bit_gravity = NorthWestGravity;
2691 attrs.event_mask = FocusChangeMask | KeyPressMask
2692 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2693 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2694 attrs.colormap = xw.cmap;
2696 parent = opt_embed ? strtol(opt_embed, NULL, 0) : \
2697 XRootWindow(xw.dpy, xw.scr);
2698 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2699 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2701 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2705 memset(&gcvalues, 0, sizeof(gcvalues));
2706 gcvalues.graphics_exposures = False;
2707 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
2709 xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
2710 DefaultDepth(xw.dpy, xw.scr));
2711 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
2712 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
2714 /* Xft rendering context */
2715 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
2718 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2719 XSetLocaleModifiers("@im=local");
2720 if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
2721 XSetLocaleModifiers("@im=");
2722 if((xw.xim = XOpenIM(xw.dpy,
2723 NULL, NULL, NULL)) == NULL) {
2724 die("XOpenIM failed. Could not open input"
2729 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2730 | XIMStatusNothing, XNClientWindow, xw.win,
2731 XNFocusWindow, xw.win, NULL);
2733 die("XCreateIC failed. Could not obtain input method.\n");
2735 /* white cursor, black outline */
2736 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2737 XDefineCursor(xw.dpy, xw.win, cursor);
2738 XRecolorCursor(xw.dpy, cursor,
2739 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2740 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2742 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2743 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
2744 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
2747 XMapWindow(xw.dpy, xw.win);
2753 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2754 int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
2755 width = charlen * xw.cw, xp, i;
2757 int u8fl, u8fblen, u8cblen, doesexist;
2760 Font *font = &dc.font;
2762 FcPattern *fcpattern, *fontpattern;
2763 FcFontSet *fcsets[] = { NULL };
2764 FcCharSet *fccharset;
2765 Colour *fg, *bg, *temp, revfg, revbg;
2766 XRenderColor colfg, colbg;
2768 frcflags = FRC_NORMAL;
2770 if(base.mode & ATTR_ITALIC) {
2771 if(base.fg == defaultfg)
2772 base.fg = defaultitalic;
2774 frcflags = FRC_ITALIC;
2775 } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
2776 if(base.fg == defaultfg)
2777 base.fg = defaultitalic;
2779 frcflags = FRC_ITALICBOLD;
2780 } else if(base.mode & ATTR_UNDERLINE) {
2781 if(base.fg == defaultfg)
2782 base.fg = defaultunderline;
2784 fg = &dc.col[base.fg];
2785 bg = &dc.col[base.bg];
2787 if(base.mode & ATTR_BOLD) {
2788 if(BETWEEN(base.fg, 0, 7)) {
2789 /* basic system colors */
2790 fg = &dc.col[base.fg + 8];
2791 } else if(BETWEEN(base.fg, 16, 195)) {
2793 fg = &dc.col[base.fg + 36];
2794 } else if(BETWEEN(base.fg, 232, 251)) {
2796 fg = &dc.col[base.fg + 4];
2799 * Those ranges will not be brightened:
2800 * 8 - 15 – bright system colors
2801 * 196 - 231 – highest 256 color cube
2802 * 252 - 255 – brightest colors in greyscale
2805 frcflags = FRC_BOLD;
2808 if(IS_SET(MODE_REVERSE)) {
2809 if(fg == &dc.col[defaultfg]) {
2810 fg = &dc.col[defaultbg];
2812 colfg.red = ~fg->color.red;
2813 colfg.green = ~fg->color.green;
2814 colfg.blue = ~fg->color.blue;
2815 colfg.alpha = fg->color.alpha;
2816 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
2820 if(bg == &dc.col[defaultbg]) {
2821 bg = &dc.col[defaultfg];
2823 colbg.red = ~bg->color.red;
2824 colbg.green = ~bg->color.green;
2825 colbg.blue = ~bg->color.blue;
2826 colbg.alpha = bg->color.alpha;
2827 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &revbg);
2832 if(base.mode & ATTR_REVERSE) {
2838 /* Intelligent cleaning up of the borders. */
2840 xclear(0, (y == 0)? 0 : winy, borderpx,
2841 winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
2843 if(x + charlen >= term.col) {
2844 xclear(winx + width, (y == 0)? 0 : winy, xw.w,
2845 ((y >= term.row-1)? xw.h : (winy + xw.ch)));
2848 xclear(winx, 0, winx + width, borderpx);
2850 xclear(winx, winy + xw.ch, winx + width, xw.h);
2852 /* Clean up the region we want to draw to. */
2853 XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
2855 fcsets[0] = font->set;
2856 for(xp = winx; bytelen > 0;) {
2858 * Search for the range in the to be printed string of glyphs
2859 * that are in the main font. Then print that range. If
2860 * some glyph is found that is not in the font, do the
2868 u8cblen = utf8decode(s, &u8char);
2872 doesexist = XftCharIndex(xw.dpy, font->match, u8char);
2873 if(!doesexist || bytelen <= 0) {
2882 XftDrawStringUtf8(xw.draw, fg,
2884 winy + font->ascent,
2887 xp += font->width * u8fl;
2899 /* Search the font cache. */
2900 for(i = 0; i < frclen; i++, frp--) {
2904 if(frc[frp].c == u8char
2905 && frc[frp].flags == frcflags) {
2910 /* Nothing was found. */
2913 * Nothing was found in the cache. Now use
2914 * some dozen of Fontconfig calls to get the
2915 * font for one single character.
2917 fcpattern = FcPatternDuplicate(font->pattern);
2918 fccharset = FcCharSetCreate();
2920 FcCharSetAddChar(fccharset, u8char);
2921 FcPatternAddCharSet(fcpattern, FC_CHARSET,
2923 FcPatternAddBool(fcpattern, FC_SCALABLE,
2926 FcConfigSubstitute(0, fcpattern,
2928 FcDefaultSubstitute(fcpattern);
2930 fontpattern = FcFontSetMatch(0, fcsets,
2931 FcTrue, fcpattern, &fcres);
2934 * Overwrite or create the new cache entry.
2938 if(frccur >= LEN(frc))
2940 if(frclen > LEN(frc)) {
2942 XftFontClose(xw.dpy, frc[frccur].font);
2945 frc[frccur].font = XftFontOpenPattern(xw.dpy,
2947 frc[frccur].c = u8char;
2948 frc[frccur].flags = frcflags;
2950 FcPatternDestroy(fcpattern);
2951 FcCharSetDestroy(fccharset);
2956 XftDrawStringUtf8(xw.draw, fg, frc[frp].font,
2957 xp, winy + frc[frp].font->ascent,
2958 (FcChar8 *)u8c, u8cblen);
2964 XftDrawStringUtf8(xw.draw, fg, font->set, winx,
2965 winy + font->ascent, (FcChar8 *)s, bytelen);
2968 if(base.mode & ATTR_UNDERLINE) {
2969 XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
2976 static int oldx = 0, oldy = 0;
2978 Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
2980 LIMIT(oldx, 0, term.col-1);
2981 LIMIT(oldy, 0, term.row-1);
2983 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2985 /* remove the old cursor */
2986 sl = utf8size(term.line[oldy][oldx].c);
2987 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
2990 /* draw the new one */
2991 if(!(IS_SET(MODE_HIDE))) {
2992 if(xw.state & WIN_FOCUSED) {
2993 if(IS_SET(MODE_REVERSE)) {
2994 g.mode |= ATTR_REVERSE;
3000 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
3002 XftDrawRect(xw.draw, &dc.col[defaultcs],
3003 borderpx + term.c.x * xw.cw,
3004 borderpx + term.c.y * xw.ch,
3006 XftDrawRect(xw.draw, &dc.col[defaultcs],
3007 borderpx + term.c.x * xw.cw,
3008 borderpx + term.c.y * xw.ch,
3010 XftDrawRect(xw.draw, &dc.col[defaultcs],
3011 borderpx + (term.c.x + 1) * xw.cw - 1,
3012 borderpx + term.c.y * xw.ch,
3014 XftDrawRect(xw.draw, &dc.col[defaultcs],
3015 borderpx + term.c.x * xw.cw,
3016 borderpx + (term.c.y + 1) * xw.ch - 1,
3019 oldx = term.c.x, oldy = term.c.y;
3025 xsettitle(char *p) {
3028 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
3030 XSetWMName(xw.dpy, xw.win, &prop);
3035 xsettitle(opt_title ? opt_title : "st");
3039 redraw(int timeout) {
3040 struct timespec tv = {0, timeout * 1000};
3046 nanosleep(&tv, NULL);
3047 XSync(xw.dpy, False); /* necessary for a good tput flash */
3053 drawregion(0, 0, term.col, term.row);
3054 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
3056 XSetForeground(xw.dpy, dc.gc,
3057 dc.col[IS_SET(MODE_REVERSE)?
3058 defaultfg : defaultbg].pixel);
3062 drawregion(int x1, int y1, int x2, int y2) {
3063 int ic, ib, x, y, ox, sl;
3065 char buf[DRAW_BUF_SIZ];
3066 bool ena_sel = sel.bx != -1;
3068 if(sel.alt ^ IS_SET(MODE_ALTSCREEN))
3071 if(!(xw.state & WIN_VISIBLE))
3074 for(y = y1; y < y2; y++) {
3078 xtermclear(0, y, term.col, y);
3080 base = term.line[y][0];
3082 for(x = x1; x < x2; x++) {
3083 new = term.line[y][x];
3084 if(ena_sel && *(new.c) && selected(x, y))
3085 new.mode ^= ATTR_REVERSE;
3086 if(ib > 0 && (ATTRCMP(base, new)
3087 || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
3088 xdraws(buf, base, ox, y, ic, ib);
3096 sl = utf8size(new.c);
3097 memcpy(buf+ib, new.c, sl);
3102 xdraws(buf, base, ox, y, ic, ib);
3108 expose(XEvent *ev) {
3109 XExposeEvent *e = &ev->xexpose;
3111 if(xw.state & WIN_REDRAW) {
3113 xw.state &= ~WIN_REDRAW;
3119 visibility(XEvent *ev) {
3120 XVisibilityEvent *e = &ev->xvisibility;
3122 if(e->state == VisibilityFullyObscured) {
3123 xw.state &= ~WIN_VISIBLE;
3124 } else if(!(xw.state & WIN_VISIBLE)) {
3125 /* need a full redraw for next Expose, not just a buf copy */
3126 xw.state |= WIN_VISIBLE | WIN_REDRAW;
3132 xw.state &= ~WIN_VISIBLE;
3136 xseturgency(int add) {
3137 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
3139 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
3140 XSetWMHints(xw.dpy, xw.win, h);
3146 XFocusChangeEvent *e = &ev->xfocus;
3148 if(e->mode == NotifyGrab)
3151 if(ev->type == FocusIn) {
3152 XSetICFocus(xw.xic);
3153 xw.state |= WIN_FOCUSED;
3156 XUnsetICFocus(xw.xic);
3157 xw.state &= ~WIN_FOCUSED;
3162 match(uint mask, uint state) {
3163 state &= ~(ignoremod);
3165 if(mask == XK_NO_MOD && state)
3167 if(mask != XK_ANY_MOD && mask != XK_NO_MOD && !state)
3169 if((state & mask) != state)
3175 numlock(const Arg *dummy) {
3180 kmap(KeySym k, uint state) {
3185 /* Check for mapped keys out of X11 function keys. */
3186 for(i = 0; i < LEN(mappedkeys); i++) {
3187 if(mappedkeys[i] == k)
3190 if(i == LEN(mappedkeys)) {
3191 if((k & 0xFFFF) < 0xFD00)
3195 for(kp = key; kp < key + LEN(key); kp++) {
3201 if(!match(mask, state))
3204 if(kp->appkey > 0) {
3205 if(!IS_SET(MODE_APPKEYPAD))
3207 if(term.numlock && kp->appkey == 2)
3209 } else if(kp->appkey < 0 && IS_SET(MODE_APPKEYPAD)) {
3213 if((kp->appcursor < 0 && IS_SET(MODE_APPCURSOR)) ||
3215 && !IS_SET(MODE_APPCURSOR))) {
3219 if((kp->crlf < 0 && IS_SET(MODE_CRLF)) ||
3220 (kp->crlf > 0 && !IS_SET(MODE_CRLF))) {
3231 kpress(XEvent *ev) {
3232 XKeyEvent *e = &ev->xkey;
3234 char xstr[31], buf[32], *customkey, *cp = buf;
3240 if(IS_SET(MODE_KBDLOCK))
3243 len = XmbLookupString(xw.xic, e, xstr, sizeof(xstr), &ksym, &status);
3244 e->state &= ~Mod2Mask;
3246 for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
3247 if(ksym == bp->keysym && match(bp->mod, e->state)) {
3248 bp->func(&(bp->arg));
3253 /* 2. custom keys from config.h */
3254 if((customkey = kmap(ksym, e->state))) {
3255 len = strlen(customkey);
3256 memcpy(buf, customkey, len);
3257 /* 3. hardcoded (overrides X lookup) */
3262 if(len == 1 && e->state & Mod1Mask) {
3263 if(IS_SET(MODE_8BIT)) {
3266 ret = utf8encode(&c, cp);
3275 memcpy(cp, xstr, len);
3276 len = cp - buf + len;
3280 if(IS_SET(MODE_ECHO))
3286 cmessage(XEvent *e) {
3289 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
3291 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
3292 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
3293 xw.state |= WIN_FOCUSED;
3295 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
3296 xw.state &= ~WIN_FOCUSED;
3298 } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
3299 /* Send SIGHUP to shell */
3306 cresize(int width, int height) {
3314 col = (xw.w - 2 * borderpx) / xw.cw;
3315 row = (xw.h - 2 * borderpx) / xw.ch;
3324 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
3327 cresize(e->xconfigure.width, e->xconfigure.height);
3334 int xfd = XConnectionNumber(xw.dpy), xev;
3335 struct timeval drawtimeout, *tv = NULL, now, last;
3337 gettimeofday(&last, NULL);
3339 for(xev = actionfps;;) {
3341 FD_SET(cmdfd, &rfd);
3343 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
3346 die("select failed: %s\n", SERRNO);
3349 gettimeofday(&now, NULL);
3350 drawtimeout.tv_sec = 0;
3351 drawtimeout.tv_usec = (1000/xfps) * 1000;
3354 if(FD_ISSET(cmdfd, &rfd))
3357 if(FD_ISSET(xfd, &rfd))
3360 if(TIMEDIFF(now, last) > \
3361 (xev ? (1000/xfps) : (1000/actionfps))) {
3362 while(XPending(xw.dpy)) {
3363 XNextEvent(xw.dpy, &ev);
3364 if(XFilterEvent(&ev, None))
3366 if(handler[ev.type])
3367 (handler[ev.type])(&ev);
3374 if(xev && !FD_ISSET(xfd, &rfd))
3376 if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd))
3384 die("%s " VERSION " (c) 2010-2013 st engineers\n" \
3385 "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]" \
3386 " [-t title] [-w windowid] [-e command ...]\n", argv0);
3390 main(int argc, char *argv[]) {
3394 xw.fw = xw.fh = xw.fx = xw.fy = 0;
3399 allowaltscreen = false;
3402 opt_class = EARGF(usage());
3405 /* eat all remaining arguments */
3410 opt_font = EARGF(usage());
3413 bitm = XParseGeometry(EARGF(usage()), &xr, &yr, &wr, &hr);
3418 if(bitm & WidthValue)
3420 if(bitm & HeightValue)
3422 if(bitm & XNegative && xw.fx == 0)
3424 if(bitm & XNegative && xw.fy == 0)
3427 if(xw.fh != 0 && xw.fw != 0)
3431 opt_io = EARGF(usage());
3434 opt_title = EARGF(usage());
3437 opt_embed = EARGF(usage());
3445 setlocale(LC_CTYPE, "");
3446 XSetLocaleModifiers("");
3452 cresize(xw.h, xw.w);