1 /* See LICENSE for licence details. */
2 #define _XOPEN_SOURCE 600
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/extensions/Xdbe.h>
31 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
33 #elif defined(__FreeBSD__) || defined(__DragonFly__)
38 "st " VERSION " (c) 2010-2012 st engineers\n" \
39 "usage: st [-t title] [-c class] [-g geometry]" \
40 " [-w windowid] [-v] [-f file] [-e command...]\n"
43 #define XEMBED_FOCUS_IN 4
44 #define XEMBED_FOCUS_OUT 5
47 #define ESC_BUF_SIZ 256
48 #define ESC_ARG_SIZ 16
49 #define STR_BUF_SIZ 256
50 #define STR_ARG_SIZ 16
51 #define DRAW_BUF_SIZ 20*1024
53 #define XK_NO_MOD UINT_MAX
56 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
58 #define SERRNO strerror(errno)
59 #define MIN(a, b) ((a) < (b) ? (a) : (b))
60 #define MAX(a, b) ((a) < (b) ? (b) : (a))
61 #define LEN(a) (sizeof(a) / sizeof(a[0]))
62 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
63 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
64 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
65 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
66 #define IS_SET(flag) (term.mode & (flag))
67 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
68 #define X2COL(x) (((x) - BORDER)/xw.cw)
69 #define Y2ROW(y) (((y) - BORDER)/xw.ch)
71 enum glyph_attribute {
81 enum cursor_movement {
108 MODE_MOUSEMOTION = 64,
116 ESC_STR = 4, /* DSC, OSC, PM, APC */
118 ESC_STR_END = 16, /* a final string was encountered */
129 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
131 typedef unsigned char uchar;
132 typedef unsigned int uint;
133 typedef unsigned long ulong;
134 typedef unsigned short ushort;
137 char c[UTF_SIZ]; /* character code */
138 uchar mode; /* attribute flags */
139 ushort fg; /* foreground */
140 ushort bg; /* background */
141 uchar state; /* state flags */
147 Glyph attr; /* current char attributes */
153 /* CSI Escape sequence structs */
154 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
156 char buf[ESC_BUF_SIZ]; /* raw string */
157 int len; /* raw string length */
159 int arg[ESC_ARG_SIZ];
160 int narg; /* nb of args */
164 /* STR Escape sequence structs */
165 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
167 char type; /* ESC type ... */
168 char buf[STR_BUF_SIZ]; /* raw string */
169 int len; /* raw string length */
170 char *args[STR_ARG_SIZ];
171 int narg; /* nb of args */
174 /* Internal representation of the screen */
176 int row; /* nb row */
177 int col; /* nb col */
178 Line* line; /* screen */
179 Line* alt; /* alternate screen */
180 bool* dirty; /* dirtyness of lines */
181 TCursor c; /* cursor */
182 int top; /* top scroll limit */
183 int bot; /* bottom scroll limit */
184 int mode; /* terminal mode flags */
185 int esc; /* escape state flags */
189 /* Purely graphic info */
199 Bool isfixed; /* is fixed geometry? */
200 int fx, fy, fw, fh; /* fixed geometry */
201 int w; /* window width */
202 int h; /* window height */
203 int ch; /* char height */
204 int cw; /* char width */
205 char state; /* focus, redraw, visible */
215 /* TODO: use better name for vars... */
220 struct {int x, y;} b, e;
224 struct timeval tclick1;
225 struct timeval tclick2;
230 /* Drawing Context */
232 ulong col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
240 } font, bfont, ifont, ibfont;
243 static void die(const char*, ...);
244 static void draw(void);
245 static void redraw(void);
246 static void drawregion(int, int, int, int);
247 static void execsh(void);
248 static void sigchld(int);
249 static void run(void);
251 static void csidump(void);
252 static void csihandle(void);
253 static void csiparse(void);
254 static void csireset(void);
255 static void strdump(void);
256 static void strhandle(void);
257 static void strparse(void);
258 static void strreset(void);
260 static void tclearregion(int, int, int, int);
261 static void tcursor(int);
262 static void tdeletechar(int);
263 static void tdeleteline(int);
264 static void tinsertblank(int);
265 static void tinsertblankline(int);
266 static void tmoveto(int, int);
267 static void tnew(int, int);
268 static void tnewline(int);
269 static void tputtab(bool);
270 static void tputc(char*);
271 static void treset(void);
272 static int tresize(int, int);
273 static void tscrollup(int, int);
274 static void tscrolldown(int, int);
275 static void tsetattr(int*, int);
276 static void tsetchar(char*);
277 static void tsetscroll(int, int);
278 static void tswapscreen(void);
279 static void tsetdirt(int, int);
280 static void tsetmode(bool, bool, int *, int);
281 static void tfulldirt(void);
283 static void ttynew(void);
284 static void ttyread(void);
285 static void ttyresize(int, int);
286 static void ttywrite(const char *, size_t);
288 static void xdraws(char *, Glyph, int, int, int, int);
289 static void xhints(void);
290 static void xclear(int, int, int, int);
291 static void xdrawcursor(void);
292 static void xinit(void);
293 static void xloadcols(void);
294 static void xresettitle(void);
295 static void xseturgency(int);
296 static void xsetsel(char*);
297 static void xresize(int, int);
299 static void expose(XEvent *);
300 static void visibility(XEvent *);
301 static void unmap(XEvent *);
302 static char* kmap(KeySym, uint);
303 static void kpress(XEvent *);
304 static void cmessage(XEvent *);
305 static void resize(XEvent *);
306 static void focus(XEvent *);
307 static void brelease(XEvent *);
308 static void bpress(XEvent *);
309 static void bmotion(XEvent *);
310 static void selnotify(XEvent *);
311 static void selclear(XEvent *);
312 static void selrequest(XEvent *);
314 static void selinit(void);
315 static inline bool selected(int, int);
316 static void selcopy(void);
317 static void selpaste(void);
318 static void selscroll(int, int);
320 static int utf8decode(char *, long *);
321 static int utf8encode(long *, char *);
322 static int utf8size(char *);
323 static int isfullutf8(char *, int);
325 static void *xmalloc(size_t);
326 static void *xrealloc(void *, size_t);
328 static void (*handler[LASTEvent])(XEvent *) = {
330 [ClientMessage] = cmessage,
331 [ConfigureNotify] = resize,
332 [VisibilityNotify] = visibility,
333 [UnmapNotify] = unmap,
337 [MotionNotify] = bmotion,
338 [ButtonPress] = bpress,
339 [ButtonRelease] = brelease,
340 [SelectionClear] = selclear,
341 [SelectionNotify] = selnotify,
342 [SelectionRequest] = selrequest,
349 static CSIEscape csiescseq;
350 static STREscape strescseq;
353 static Selection sel;
354 static int iofd = -1;
355 static char **opt_cmd = NULL;
356 static char *opt_io = NULL;
357 static char *opt_title = NULL;
358 static char *opt_embed = NULL;
359 static char *opt_class = NULL;
362 xmalloc(size_t len) {
363 void *p = malloc(len);
365 die("Out of memory");
370 xrealloc(void *p, size_t len) {
371 if((p = realloc(p, len)) == NULL)
372 die("Out of memory");
377 utf8decode(char *s, long *u) {
383 if(~c & B7) { /* 0xxxxxxx */
386 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
387 *u = c&(B4|B3|B2|B1|B0);
389 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
390 *u = c&(B3|B2|B1|B0);
392 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
397 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
399 if((c & (B7|B6)) != B7) /* 10xxxxxx */
402 *u |= c & (B5|B4|B3|B2|B1|B0);
404 if((n == 1 && *u < 0x80) ||
405 (n == 2 && *u < 0x800) ||
406 (n == 3 && *u < 0x10000) ||
407 (*u >= 0xD800 && *u <= 0xDFFF))
416 utf8encode(long *u, char *s) {
424 *sp = uc; /* 0xxxxxxx */
426 } else if(*u < 0x800) {
427 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
429 } else if(uc < 0x10000) {
430 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
432 } else if(uc <= 0x10FFFF) {
433 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
438 for(i=n,++sp; i>0; --i,++sp)
439 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
449 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
450 UTF-8 otherwise return 0 */
452 isfullutf8(char *s, int b) {
460 else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1)
462 else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
464 ((b == 2) && (*c2&(B7|B6)) == B7)))
466 else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
468 ((b == 2) && (*c2&(B7|B6)) == B7) ||
469 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7)))
481 else if((c&(B7|B6|B5)) == (B7|B6))
483 else if((c&(B7|B6|B5|B4)) == (B7|B6|B5))
491 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
492 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
496 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
497 if(sel.xtarget == None)
498 sel.xtarget = XA_STRING;
502 selected(int x, int y) {
503 if(sel.ey == y && sel.by == y) {
504 int bx = MIN(sel.bx, sel.ex);
505 int ex = MAX(sel.bx, sel.ex);
506 return BETWEEN(x, bx, ex);
508 return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
509 || (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
513 getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
515 *b = e->xbutton.button;
517 *x = X2COL(e->xbutton.x);
518 *y = Y2ROW(e->xbutton.y);
519 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
520 sel.b.y = MIN(sel.by, sel.ey);
521 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
522 sel.e.y = MAX(sel.by, sel.ey);
526 mousereport(XEvent *e) {
527 int x = X2COL(e->xbutton.x);
528 int y = Y2ROW(e->xbutton.y);
529 int button = e->xbutton.button;
530 int state = e->xbutton.state;
531 char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
532 static int ob, ox, oy;
535 if(e->xbutton.type == MotionNotify) {
536 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
540 } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
546 if(e->xbutton.type == ButtonPress) {
552 buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
553 + (state & Mod4Mask ? 8 : 0)
554 + (state & ControlMask ? 16 : 0);
556 ttywrite(buf, sizeof(buf));
561 if(IS_SET(MODE_MOUSE))
563 else if(e->xbutton.button == Button1) {
566 tsetdirt(sel.b.y, sel.e.y);
570 sel.ex = sel.bx = X2COL(e->xbutton.x);
571 sel.ey = sel.by = Y2ROW(e->xbutton.y);
578 int x, y, bufsize, is_selected = 0;
584 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
585 ptr = str = xmalloc(bufsize);
587 /* append every set & selected glyph to the selection */
588 for(y = 0; y < term.row; y++) {
589 for(x = 0; x < term.col; x++) {
590 is_selected = selected(x, y);
591 if((term.line[y][x].state & GLYPH_SET) && is_selected) {
592 int size = utf8size(term.line[y][x].c);
593 memcpy(ptr, term.line[y][x].c, size);
598 /* \n at the end of every selected line except for the last one */
599 if(is_selected && y < sel.e.y)
604 sel.alt = IS_SET(MODE_ALTSCREEN);
609 selnotify(XEvent *e) {
610 ulong nitems, ofs, rem;
617 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
618 False, AnyPropertyType, &type, &format,
619 &nitems, &rem, &data)) {
620 fprintf(stderr, "Clipboard allocation failed\n");
623 ttywrite((const char *) data, nitems * format / 8);
625 /* number of 32-bit chunks returned */
626 ofs += nitems * format / 32;
632 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY, xw.win, CurrentTime);
635 void selclear(XEvent *e) {
639 tsetdirt(sel.b.y, sel.e.y);
643 selrequest(XEvent *e) {
644 XSelectionRequestEvent *xsre;
648 xsre = (XSelectionRequestEvent *) e;
649 xev.type = SelectionNotify;
650 xev.requestor = xsre->requestor;
651 xev.selection = xsre->selection;
652 xev.target = xsre->target;
653 xev.time = xsre->time;
657 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
658 if(xsre->target == xa_targets) {
659 /* respond with the supported type */
660 Atom string = sel.xtarget;
661 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
662 XA_ATOM, 32, PropModeReplace,
663 (uchar *) &string, 1);
664 xev.property = xsre->property;
665 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
666 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
667 xsre->target, 8, PropModeReplace,
668 (uchar *) sel.clip, strlen(sel.clip));
669 xev.property = xsre->property;
672 /* all done, send a notification to the listener */
673 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
674 fprintf(stderr, "Error sending SelectionNotify event\n");
679 /* register the selection for both the clipboard and the primary */
685 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
687 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
688 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
692 brelease(XEvent *e) {
693 if(IS_SET(MODE_MOUSE)) {
697 if(e->xbutton.button == Button2)
699 else if(e->xbutton.button == Button1) {
701 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
702 term.dirty[sel.ey] = 1;
703 if(sel.bx == sel.ex && sel.by == sel.ey) {
706 gettimeofday(&now, NULL);
708 if(TIMEDIFF(now, sel.tclick2) <= TRIPLECLICK_TIMEOUT) {
709 /* triple click on the line */
710 sel.b.x = sel.bx = 0;
711 sel.e.x = sel.ex = term.col;
712 sel.b.y = sel.e.y = sel.ey;
714 } else if(TIMEDIFF(now, sel.tclick1) <= DOUBLECLICK_TIMEOUT) {
715 /* double click to select word */
717 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
718 term.line[sel.ey][sel.bx-1].c[0] != ' ') sel.bx--;
720 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
721 term.line[sel.ey][sel.ex+1].c[0] != ' ') sel.ex++;
723 sel.b.y = sel.e.y = sel.ey;
729 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
730 gettimeofday(&sel.tclick1, NULL);
735 if(IS_SET(MODE_MOUSE)) {
740 int oldey = sel.ey, oldex = sel.ex;
741 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
743 if(oldey != sel.ey || oldex != sel.ex) {
744 int starty = MIN(oldey, sel.ey);
745 int endy = MAX(oldey, sel.ey);
746 tsetdirt(starty, endy);
752 die(const char *errstr, ...) {
755 va_start(ap, errstr);
756 vfprintf(stderr, errstr, ap);
764 char *envshell = getenv("SHELL");
770 signal(SIGCHLD, SIG_DFL);
771 signal(SIGHUP, SIG_DFL);
772 signal(SIGINT, SIG_DFL);
773 signal(SIGQUIT, SIG_DFL);
774 signal(SIGTERM, SIG_DFL);
775 signal(SIGALRM, SIG_DFL);
777 DEFAULT(envshell, SHELL);
778 putenv("TERM="TNAME);
779 args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};
780 execvp(args[0], args);
787 if(waitpid(pid, &stat, 0) < 0)
788 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
790 exit(WEXITSTATUS(stat));
799 /* seems to work fine on linux, openbsd and freebsd */
800 struct winsize w = {term.row, term.col, 0, 0};
801 if(openpty(&m, &s, NULL, NULL, &w) < 0)
802 die("openpty failed: %s\n", SERRNO);
804 switch(pid = fork()) {
806 die("fork failed\n");
809 setsid(); /* create a new process group */
810 dup2(s, STDIN_FILENO);
811 dup2(s, STDOUT_FILENO);
812 dup2(s, STDERR_FILENO);
813 if(ioctl(s, TIOCSCTTY, NULL) < 0)
814 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
822 signal(SIGCHLD, sigchld);
824 if(!strcmp(opt_io, "-")) {
825 iofd = STDOUT_FILENO;
827 if((iofd = open(opt_io, O_WRONLY | O_CREAT, 0666)) < 0) {
828 fprintf(stderr, "Error opening %s:%s\n",
829 opt_io, strerror(errno));
839 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
841 fprintf(stderr, "\n");
846 static char buf[BUFSIZ];
847 static int buflen = 0;
850 int charsize; /* size of utf8 char in bytes */
854 /* append read bytes to unprocessed bytes */
855 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
856 die("Couldn't read from shell: %s\n", SERRNO);
858 /* process every complete utf8 char */
861 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
862 charsize = utf8decode(ptr, &utf8c);
863 utf8encode(&utf8c, s);
869 /* keep any uncomplete utf8 char for the next call */
870 memmove(buf, ptr, buflen);
874 ttywrite(const char *s, size_t n) {
875 if(write(cmdfd, s, n) == -1)
876 die("write error on tty: %s\n", SERRNO);
880 ttyresize(int x, int y) {
887 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
888 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
892 tsetdirt(int top, int bot)
896 LIMIT(top, 0, term.row-1);
897 LIMIT(bot, 0, term.row-1);
899 for(i = top; i <= bot; i++)
906 tsetdirt(0, term.row-1);
913 if(mode == CURSOR_SAVE)
915 else if(mode == CURSOR_LOAD)
916 term.c = c, tmoveto(c.x, c.y);
926 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
928 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
929 for(i = TAB; i < term.col; i += TAB)
931 term.top = 0, term.bot = term.row - 1;
932 term.mode = MODE_WRAP;
933 tclearregion(0, 0, term.col-1, term.row-1);
937 tnew(int col, int row) {
938 /* set screen size */
939 term.row = row, term.col = col;
940 term.line = xmalloc(term.row * sizeof(Line));
941 term.alt = xmalloc(term.row * sizeof(Line));
942 term.dirty = xmalloc(term.row * sizeof(*term.dirty));
943 term.tabs = xmalloc(term.col * sizeof(*term.tabs));
945 for(row = 0; row < term.row; row++) {
946 term.line[row] = xmalloc(term.col * sizeof(Glyph));
947 term.alt [row] = xmalloc(term.col * sizeof(Glyph));
950 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
957 Line* tmp = term.line;
958 term.line = term.alt;
960 term.mode ^= MODE_ALTSCREEN;
965 tscrolldown(int orig, int n) {
969 LIMIT(n, 0, term.bot-orig+1);
971 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
973 for(i = term.bot; i >= orig+n; i--) {
975 term.line[i] = term.line[i-n];
976 term.line[i-n] = temp;
986 tscrollup(int orig, int n) {
989 LIMIT(n, 0, term.bot-orig+1);
991 tclearregion(0, orig, term.col-1, orig+n-1);
993 for(i = orig; i <= term.bot-n; i++) {
995 term.line[i] = term.line[i+n];
996 term.line[i+n] = temp;
1002 selscroll(orig, -n);
1006 selscroll(int orig, int n) {
1010 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1011 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1015 if(sel.by < term.top) {
1019 if(sel.ey > term.bot) {
1023 sel.b.y = sel.by, sel.b.x = sel.bx;
1024 sel.e.y = sel.ey, sel.e.x = sel.ex;
1029 tnewline(int first_col) {
1032 tscrollup(term.top, 1);
1035 tmoveto(first_col ? 0 : term.c.x, y);
1040 /* int noarg = 1; */
1041 char *p = csiescseq.buf;
1045 csiescseq.priv = 1, p++;
1047 while(p < csiescseq.buf+csiescseq.len) {
1048 while(isdigit(*p)) {
1049 csiescseq.arg[csiescseq.narg] *= 10;
1050 csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
1052 if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ)
1053 csiescseq.narg++, p++;
1055 csiescseq.mode = *p;
1063 tmoveto(int x, int y) {
1064 LIMIT(x, 0, term.col-1);
1065 LIMIT(y, 0, term.row-1);
1066 term.c.state &= ~CURSOR_WRAPNEXT;
1073 term.dirty[term.c.y] = 1;
1074 term.line[term.c.y][term.c.x] = term.c.attr;
1075 memcpy(term.line[term.c.y][term.c.x].c, c, UTF_SIZ);
1076 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
1080 tclearregion(int x1, int y1, int x2, int y2) {
1084 temp = x1, x1 = x2, x2 = temp;
1086 temp = y1, y1 = y2, y2 = temp;
1088 LIMIT(x1, 0, term.col-1);
1089 LIMIT(x2, 0, term.col-1);
1090 LIMIT(y1, 0, term.row-1);
1091 LIMIT(y2, 0, term.row-1);
1093 for(y = y1; y <= y2; y++) {
1095 for(x = x1; x <= x2; x++)
1096 term.line[y][x].state = 0;
1101 tdeletechar(int n) {
1102 int src = term.c.x + n;
1104 int size = term.col - src;
1106 term.dirty[term.c.y] = 1;
1108 if(src >= term.col) {
1109 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1112 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
1113 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1117 tinsertblank(int n) {
1120 int size = term.col - dst;
1122 term.dirty[term.c.y] = 1;
1124 if(dst >= term.col) {
1125 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1128 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
1129 tclearregion(src, term.c.y, dst - 1, term.c.y);
1133 tinsertblankline(int n) {
1134 if(term.c.y < term.top || term.c.y > term.bot)
1137 tscrolldown(term.c.y, n);
1141 tdeleteline(int n) {
1142 if(term.c.y < term.top || term.c.y > term.bot)
1145 tscrollup(term.c.y, n);
1149 tsetattr(int *attr, int l) {
1152 for(i = 0; i < l; i++) {
1155 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
1156 | ATTR_ITALIC | ATTR_BLINK);
1157 term.c.attr.fg = DefaultFG;
1158 term.c.attr.bg = DefaultBG;
1161 term.c.attr.mode |= ATTR_BOLD;
1163 case 3: /* enter standout (highlight) */
1164 term.c.attr.mode |= ATTR_ITALIC;
1167 term.c.attr.mode |= ATTR_UNDERLINE;
1170 term.c.attr.mode |= ATTR_BLINK;
1173 term.c.attr.mode |= ATTR_REVERSE;
1177 term.c.attr.mode &= ~ATTR_BOLD;
1179 case 23: /* leave standout (highlight) mode */
1180 term.c.attr.mode &= ~ATTR_ITALIC;
1183 term.c.attr.mode &= ~ATTR_UNDERLINE;
1186 term.c.attr.mode &= ~ATTR_BLINK;
1189 term.c.attr.mode &= ~ATTR_REVERSE;
1192 if(i + 2 < l && attr[i + 1] == 5) {
1194 if(BETWEEN(attr[i], 0, 255))
1195 term.c.attr.fg = attr[i];
1197 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
1200 fprintf(stderr, "erresc(38): gfx attr %d unknown\n", attr[i]);
1203 term.c.attr.fg = DefaultFG;
1206 if(i + 2 < l && attr[i + 1] == 5) {
1208 if(BETWEEN(attr[i], 0, 255))
1209 term.c.attr.bg = attr[i];
1211 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
1214 fprintf(stderr, "erresc(48): gfx attr %d unknown\n", attr[i]);
1217 term.c.attr.bg = DefaultBG;
1220 if(BETWEEN(attr[i], 30, 37))
1221 term.c.attr.fg = attr[i] - 30;
1222 else if(BETWEEN(attr[i], 40, 47))
1223 term.c.attr.bg = attr[i] - 40;
1224 else if(BETWEEN(attr[i], 90, 97))
1225 term.c.attr.fg = attr[i] - 90 + 8;
1226 else if(BETWEEN(attr[i], 100, 107))
1227 term.c.attr.bg = attr[i] - 100 + 8;
1229 fprintf(stderr, "erresc(default): gfx attr %d unknown\n", attr[i]), csidump();
1236 tsetscroll(int t, int b) {
1239 LIMIT(t, 0, term.row-1);
1240 LIMIT(b, 0, term.row-1);
1250 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1253 tsetmode(bool priv, bool set, int *args, int narg) {
1256 for(lim = args + narg; args < lim; ++args) {
1260 MODBIT(term.mode, set, MODE_APPKEYPAD);
1262 case 5: /* DECSCNM -- Reverve video */
1264 MODBIT(term.mode,set, MODE_REVERSE);
1265 if(mode != term.mode)
1269 MODBIT(term.mode, set, MODE_WRAP);
1272 MODBIT(term.mode, set, MODE_CRLF);
1274 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1277 MODBIT(term.c.state, !set, CURSOR_HIDE);
1279 case 1000: /* 1000,1002: enable xterm mouse report */
1280 MODBIT(term.mode, set, MODE_MOUSEBTN);
1283 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1285 case 1049: /* = 1047 and 1048 */
1288 if(IS_SET(MODE_ALTSCREEN))
1289 tclearregion(0, 0, term.col-1, term.row-1);
1290 if((set && !IS_SET(MODE_ALTSCREEN)) ||
1291 (!set && IS_SET(MODE_ALTSCREEN))) {
1298 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1302 "erresc: unknown private set/reset mode %d\n",
1309 MODBIT(term.mode, set, MODE_INSERT);
1313 "erresc: unknown set/reset mode %d\n",
1325 switch(csiescseq.mode) {
1328 fprintf(stderr, "erresc: unknown csi ");
1332 case '@': /* ICH -- Insert <n> blank char */
1333 DEFAULT(csiescseq.arg[0], 1);
1334 tinsertblank(csiescseq.arg[0]);
1336 case 'A': /* CUU -- Cursor <n> Up */
1338 DEFAULT(csiescseq.arg[0], 1);
1339 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1341 case 'B': /* CUD -- Cursor <n> Down */
1342 DEFAULT(csiescseq.arg[0], 1);
1343 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1345 case 'C': /* CUF -- Cursor <n> Forward */
1347 DEFAULT(csiescseq.arg[0], 1);
1348 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1350 case 'D': /* CUB -- Cursor <n> Backward */
1351 DEFAULT(csiescseq.arg[0], 1);
1352 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1354 case 'E': /* CNL -- Cursor <n> Down and first col */
1355 DEFAULT(csiescseq.arg[0], 1);
1356 tmoveto(0, term.c.y+csiescseq.arg[0]);
1358 case 'F': /* CPL -- Cursor <n> Up and first col */
1359 DEFAULT(csiescseq.arg[0], 1);
1360 tmoveto(0, term.c.y-csiescseq.arg[0]);
1362 case 'g': /* TBC -- Tabulation clear */
1363 switch (csiescseq.arg[0]) {
1364 case 0: /* clear current tab stop */
1365 term.tabs[term.c.x] = 0;
1367 case 3: /* clear all the tabs */
1368 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1374 case 'G': /* CHA -- Move to <col> */
1376 DEFAULT(csiescseq.arg[0], 1);
1377 tmoveto(csiescseq.arg[0]-1, term.c.y);
1379 case 'H': /* CUP -- Move to <row> <col> */
1381 DEFAULT(csiescseq.arg[0], 1);
1382 DEFAULT(csiescseq.arg[1], 1);
1383 tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1385 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1386 DEFAULT(csiescseq.arg[0], 1);
1387 while(csiescseq.arg[0]--)
1390 case 'J': /* ED -- Clear screen */
1392 switch(csiescseq.arg[0]) {
1394 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1395 if(term.c.y < term.row-1)
1396 tclearregion(0, term.c.y+1, term.col-1, term.row-1);
1400 tclearregion(0, 0, term.col-1, term.c.y-1);
1401 tclearregion(0, term.c.y, term.c.x, term.c.y);
1404 tclearregion(0, 0, term.col-1, term.row-1);
1410 case 'K': /* EL -- Clear line */
1411 switch(csiescseq.arg[0]) {
1413 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1416 tclearregion(0, term.c.y, term.c.x, term.c.y);
1419 tclearregion(0, term.c.y, term.col-1, term.c.y);
1423 case 'S': /* SU -- Scroll <n> line up */
1424 DEFAULT(csiescseq.arg[0], 1);
1425 tscrollup(term.top, csiescseq.arg[0]);
1427 case 'T': /* SD -- Scroll <n> line down */
1428 DEFAULT(csiescseq.arg[0], 1);
1429 tscrolldown(term.top, csiescseq.arg[0]);
1431 case 'L': /* IL -- Insert <n> blank lines */
1432 DEFAULT(csiescseq.arg[0], 1);
1433 tinsertblankline(csiescseq.arg[0]);
1435 case 'l': /* RM -- Reset Mode */
1436 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1438 case 'M': /* DL -- Delete <n> lines */
1439 DEFAULT(csiescseq.arg[0], 1);
1440 tdeleteline(csiescseq.arg[0]);
1442 case 'X': /* ECH -- Erase <n> char */
1443 DEFAULT(csiescseq.arg[0], 1);
1444 tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
1446 case 'P': /* DCH -- Delete <n> char */
1447 DEFAULT(csiescseq.arg[0], 1);
1448 tdeletechar(csiescseq.arg[0]);
1450 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1451 DEFAULT(csiescseq.arg[0], 1);
1452 while(csiescseq.arg[0]--)
1455 case 'd': /* VPA -- Move to <row> */
1456 DEFAULT(csiescseq.arg[0], 1);
1457 tmoveto(term.c.x, csiescseq.arg[0]-1);
1459 case 'h': /* SM -- Set terminal mode */
1460 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1462 case 'm': /* SGR -- Terminal attribute (color) */
1463 tsetattr(csiescseq.arg, csiescseq.narg);
1465 case 'r': /* DECSTBM -- Set Scrolling Region */
1469 DEFAULT(csiescseq.arg[0], 1);
1470 DEFAULT(csiescseq.arg[1], term.row);
1471 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1475 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1476 tcursor(CURSOR_SAVE);
1478 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1479 tcursor(CURSOR_LOAD);
1488 for(i = 0; i < csiescseq.len; i++) {
1489 uint c = csiescseq.buf[i] & 0xff;
1490 if(isprint(c)) putchar(c);
1491 else if(c == '\n') printf("(\\n)");
1492 else if(c == '\r') printf("(\\r)");
1493 else if(c == 0x1b) printf("(\\e)");
1494 else printf("(%02x)", c);
1501 memset(&csiescseq, 0, sizeof(csiescseq));
1509 * TODO: make this being useful in case of color palette change.
1515 switch(strescseq.type) {
1516 case ']': /* OSC -- Operating System Command */
1522 * TODO: Handle special chars in string, like umlauts.
1525 XStoreName(xw.dpy, xw.win, strescseq.buf+2);
1529 XStoreName(xw.dpy, xw.win, strescseq.buf+1);
1531 case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
1534 fprintf(stderr, "erresc: unknown str ");
1539 case 'k': /* old title set compatibility */
1540 XStoreName(xw.dpy, xw.win, strescseq.buf);
1542 case 'P': /* DSC -- Device Control String */
1543 case '_': /* APC -- Application Program Command */
1544 case '^': /* PM -- Privacy Message */
1546 fprintf(stderr, "erresc: unknown str ");
1556 * TODO: Implement parsing like for CSI when required.
1557 * Format: ESC type cmd ';' arg0 [';' argn] ESC \
1565 printf("ESC%c", strescseq.type);
1566 for(i = 0; i < strescseq.len; i++) {
1567 uint c = strescseq.buf[i] & 0xff;
1568 if(isprint(c)) putchar(c);
1569 else if(c == '\n') printf("(\\n)");
1570 else if(c == '\r') printf("(\\r)");
1571 else if(c == 0x1b) printf("(\\e)");
1572 else printf("(%02x)", c);
1579 memset(&strescseq, 0, sizeof(strescseq));
1583 tputtab(bool forward) {
1584 unsigned x = term.c.x;
1589 for(++x; x < term.col && !term.tabs[x]; ++x)
1594 for(--x; x > 0 && !term.tabs[x]; --x)
1597 tmoveto(x, term.c.y);
1607 if(term.esc & ESC_START) {
1608 if(term.esc & ESC_CSI) {
1609 csiescseq.buf[csiescseq.len++] = ascii;
1610 if(BETWEEN(ascii, 0x40, 0x7E) || csiescseq.len >= ESC_BUF_SIZ) {
1612 csiparse(), csihandle();
1614 } else if(term.esc & ESC_STR) {
1617 term.esc = ESC_START | ESC_STR_END;
1619 case '\a': /* backwards compatibility to xterm */
1624 strescseq.buf[strescseq.len++] = ascii;
1625 if(strescseq.len+1 >= STR_BUF_SIZ) {
1630 } else if(term.esc & ESC_STR_END) {
1634 } else if(term.esc & ESC_ALTCHARSET) {
1636 case '0': /* Line drawing crap */
1637 term.c.attr.mode |= ATTR_GFX;
1639 case 'B': /* Back to regular text */
1640 term.c.attr.mode &= ~ATTR_GFX;
1643 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
1649 term.esc |= ESC_CSI;
1651 case 'P': /* DCS -- Device Control String */
1652 case '_': /* APC -- Application Program Command */
1653 case '^': /* PM -- Privacy Message */
1654 case ']': /* OSC -- Operating System Command */
1655 case 'k': /* old title set compatibility */
1657 strescseq.type = ascii;
1658 term.esc |= ESC_STR;
1661 term.esc |= ESC_ALTCHARSET;
1663 case 'D': /* IND -- Linefeed */
1664 if(term.c.y == term.bot)
1665 tscrollup(term.top, 1);
1667 tmoveto(term.c.x, term.c.y+1);
1670 case 'E': /* NEL -- Next line */
1671 tnewline(1); /* always go to first col */
1674 case 'H': /* HTS -- Horizontal tab stop */
1675 term.tabs[term.c.x] = 1;
1678 case 'M': /* RI -- Reverse index */
1679 if(term.c.y == term.top)
1680 tscrolldown(term.top, 1);
1682 tmoveto(term.c.x, term.c.y-1);
1685 case 'c': /* RIS -- Reset to inital state */
1690 case '=': /* DECPAM -- Application keypad */
1691 term.mode |= MODE_APPKEYPAD;
1694 case '>': /* DECPNM -- Normal keypad */
1695 term.mode &= ~MODE_APPKEYPAD;
1698 case '7': /* DECSC -- Save Cursor */
1699 tcursor(CURSOR_SAVE);
1702 case '8': /* DECRC -- Restore Cursor */
1703 tcursor(CURSOR_LOAD);
1706 case '\\': /* ST -- Stop */
1710 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
1711 (uchar) ascii, isprint(ascii)?ascii:'.');
1716 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
1719 case '\0': /* padding character, do nothing */
1725 tmoveto(term.c.x-1, term.c.y);
1728 tmoveto(0, term.c.y);
1733 /* go to first col if the mode is set */
1734 tnewline(IS_SET(MODE_CRLF));
1737 if(!(xw.state & WIN_FOCUSED))
1742 term.esc = ESC_START;
1745 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
1746 tnewline(1); /* always go to first col */
1748 if(term.c.x+1 < term.col)
1749 tmoveto(term.c.x+1, term.c.y);
1751 term.c.state |= CURSOR_WRAPNEXT;
1757 tresize(int col, int row) {
1759 int minrow = MIN(row, term.row);
1760 int mincol = MIN(col, term.col);
1761 int slide = term.c.y - row + 1;
1763 if(col < 1 || row < 1)
1766 /* free unneeded rows */
1769 /* slide screen to keep cursor where we expect it -
1770 * tscrollup would work here, but we can optimize to
1771 * memmove because we're freeing the earlier lines */
1772 for(/* i = 0 */; i < slide; i++) {
1776 memmove(term.line, term.line + slide, row * sizeof(Line));
1777 memmove(term.alt, term.alt + slide, row * sizeof(Line));
1779 for(i += row; i < term.row; i++) {
1784 /* resize to new height */
1785 term.line = xrealloc(term.line, row * sizeof(Line));
1786 term.alt = xrealloc(term.alt, row * sizeof(Line));
1787 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
1788 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
1790 /* resize each row to new width, zero-pad if needed */
1791 for(i = 0; i < minrow; i++) {
1793 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
1794 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
1795 for(x = mincol; x < col; x++) {
1796 term.line[i][x].state = 0;
1797 term.alt[i][x].state = 0;
1801 /* allocate any new rows */
1802 for(/* i == minrow */; i < row; i++) {
1804 term.line[i] = calloc(col, sizeof(Glyph));
1805 term.alt [i] = calloc(col, sizeof(Glyph));
1807 if(col > term.col) {
1808 bool *bp = term.tabs + term.col;
1810 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
1811 while(--bp > term.tabs && !*bp)
1813 for(bp += TAB; bp < term.tabs + col; bp += TAB)
1816 /* update terminal size */
1817 term.col = col, term.row = row;
1818 /* make use of the LIMIT in tmoveto */
1819 tmoveto(term.c.x, term.c.y);
1820 /* reset scrolling region */
1821 tsetscroll(0, row-1);
1827 xresize(int col, int row) {
1828 xw.w = MAX(1, 2*BORDER + col * xw.cw);
1829 xw.h = MAX(1, 2*BORDER + row * xw.ch);
1836 ulong white = WhitePixel(xw.dpy, xw.scr);
1838 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
1839 for(i = 0; i < LEN(colorname); i++) {
1842 if(!XAllocNamedColor(xw.dpy, xw.cmap, colorname[i], &color, &color)) {
1844 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1846 dc.col[i] = color.pixel;
1849 /* load colors [16-255] ; same colors as xterm */
1850 for(i = 16, r = 0; r < 6; r++)
1851 for(g = 0; g < 6; g++)
1852 for(b = 0; b < 6; b++) {
1853 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1854 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1855 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1856 if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
1858 fprintf(stderr, "Could not allocate color %d\n", i);
1860 dc.col[i] = color.pixel;
1864 for(r = 0; r < 24; r++, i++) {
1865 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1866 if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
1868 fprintf(stderr, "Could not allocate color %d\n", i);
1870 dc.col[i] = color.pixel;
1875 xclear(int x1, int y1, int x2, int y2) {
1876 XSetForeground(xw.dpy, dc.gc, dc.col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG]);
1877 XFillRectangle(xw.dpy, xw.buf, dc.gc,
1878 BORDER + x1 * xw.cw, BORDER + y1 * xw.ch,
1879 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1884 XClassHint class = {opt_class ? opt_class : TNAME, TNAME};
1885 XWMHints wm = {.flags = InputHint, .input = 1};
1886 XSizeHints *sizeh = NULL;
1888 sizeh = XAllocSizeHints();
1889 if(xw.isfixed == False) {
1890 sizeh->flags = PSize | PResizeInc | PBaseSize;
1891 sizeh->height = xw.h;
1892 sizeh->width = xw.w;
1893 sizeh->height_inc = xw.ch;
1894 sizeh->width_inc = xw.cw;
1895 sizeh->base_height = 2*BORDER;
1896 sizeh->base_width = 2*BORDER;
1898 sizeh->flags = PMaxSize | PMinSize;
1899 sizeh->min_width = sizeh->max_width = xw.fw;
1900 sizeh->min_height = sizeh->max_height = xw.fh;
1903 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
1908 xinitfont(char *fontstr) {
1910 char *def, **missing;
1914 set = XCreateFontSet(xw.dpy, fontstr, &missing, &n, &def);
1917 fprintf(stderr, "st: missing fontset: %s\n", missing[n]);
1918 XFreeStringList(missing);
1924 xgetfontinfo(XFontSet set, int *ascent, int *descent, short *lbearing, short *rbearing) {
1925 XFontStruct **xfonts;
1929 *ascent = *descent = *lbearing = *rbearing = 0;
1930 n = XFontsOfFontSet(set, &xfonts, &font_names);
1931 for(i = 0; i < n; i++) {
1932 *ascent = MAX(*ascent, (*xfonts)->ascent);
1933 *descent = MAX(*descent, (*xfonts)->descent);
1934 *lbearing = MAX(*lbearing, (*xfonts)->min_bounds.lbearing);
1935 *rbearing = MAX(*rbearing, (*xfonts)->max_bounds.rbearing);
1941 initfonts(char *fontstr, char *bfontstr, char *ifontstr, char *ibfontstr) {
1942 if((dc.font.set = xinitfont(fontstr)) == NULL)
1943 die("Can't load font %s\n", fontstr);
1944 if((dc.bfont.set = xinitfont(bfontstr)) == NULL)
1945 die("Can't load bfont %s\n", bfontstr);
1946 if((dc.ifont.set = xinitfont(ifontstr)) == NULL)
1947 die("Can't load ifont %s\n", ifontstr);
1948 if((dc.ibfont.set = xinitfont(ibfontstr)) == NULL)
1949 die("Can't load ibfont %s\n", ibfontstr);
1951 xgetfontinfo(dc.font.set, &dc.font.ascent, &dc.font.descent,
1952 &dc.font.lbearing, &dc.font.rbearing);
1953 xgetfontinfo(dc.bfont.set, &dc.bfont.ascent, &dc.bfont.descent,
1954 &dc.bfont.lbearing, &dc.bfont.rbearing);
1955 xgetfontinfo(dc.ifont.set, &dc.ifont.ascent, &dc.ifont.descent,
1956 &dc.ifont.lbearing, &dc.ifont.rbearing);
1957 xgetfontinfo(dc.ibfont.set, &dc.ibfont.ascent, &dc.ibfont.descent,
1958 &dc.ibfont.lbearing, &dc.ibfont.rbearing);
1963 XSetWindowAttributes attrs;
1966 int sw, sh, major, minor;
1968 if(!(xw.dpy = XOpenDisplay(NULL)))
1969 die("Can't open display\n");
1970 xw.scr = XDefaultScreen(xw.dpy);
1973 initfonts(FONT, BOLDFONT, ITALICFONT, ITALICBOLDFONT);
1975 /* XXX: Assuming same size for bold font */
1976 xw.cw = dc.font.rbearing - dc.font.lbearing;
1977 xw.ch = dc.font.ascent + dc.font.descent;
1980 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1983 /* adjust fixed window geometry */
1985 sw = DisplayWidth(xw.dpy, xw.scr);
1986 sh = DisplayHeight(xw.dpy, xw.scr);
1988 xw.fx = sw + xw.fx - xw.fw - 1;
1990 xw.fy = sh + xw.fy - xw.fh - 1;
1995 /* window - default size */
1996 xw.h = 2*BORDER + term.row * xw.ch;
1997 xw.w = 2*BORDER + term.col * xw.cw;
2002 attrs.background_pixel = dc.col[DefaultBG];
2003 attrs.border_pixel = dc.col[DefaultBG];
2004 attrs.bit_gravity = NorthWestGravity;
2005 attrs.event_mask = FocusChangeMask | KeyPressMask
2006 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2007 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2008 attrs.colormap = xw.cmap;
2010 parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
2011 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2012 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2013 XDefaultVisual(xw.dpy, xw.scr),
2014 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2017 if(!XdbeQueryExtension(xw.dpy, &major, &minor))
2018 die("Xdbe extension is not present\n");
2019 xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
2022 xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
2023 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2024 | XIMStatusNothing, XNClientWindow, xw.win,
2025 XNFocusWindow, xw.win, NULL);
2027 dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
2029 /* white cursor, black outline */
2030 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2031 XDefineCursor(xw.dpy, xw.win, cursor);
2032 XRecolorCursor(xw.dpy, cursor,
2033 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2034 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2036 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2039 XMapWindow(xw.dpy, xw.win);
2045 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2046 int fg = base.fg, bg = base.bg, temp;
2047 int winx = BORDER+x*xw.cw, winy = BORDER+y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
2048 XFontSet fontset = dc.font.set;
2051 /* only switch default fg/bg if term is in RV mode */
2052 if(IS_SET(MODE_REVERSE)) {
2059 if(base.mode & ATTR_REVERSE)
2060 temp = fg, fg = bg, bg = temp;
2062 if(base.mode & ATTR_BOLD) {
2064 fontset = dc.bfont.set;
2067 if(base.mode & ATTR_ITALIC)
2068 fontset = dc.ifont.set;
2069 if(base.mode & (ATTR_ITALIC|ATTR_ITALIC))
2070 fontset = dc.ibfont.set;
2072 XSetBackground(xw.dpy, dc.gc, dc.col[bg]);
2073 XSetForeground(xw.dpy, dc.gc, dc.col[fg]);
2075 if(base.mode & ATTR_GFX) {
2076 for(i = 0; i < bytelen; i++) {
2077 char c = gfx[(uint)s[i] % 256];
2080 else if(s[i] > 0x5f)
2085 XmbDrawImageString(xw.dpy, xw.buf, fontset, dc.gc, winx, winy, s, bytelen);
2087 if(base.mode & ATTR_UNDERLINE)
2088 XDrawLine(xw.dpy, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
2093 static int oldx = 0;
2094 static int oldy = 0;
2096 Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
2098 LIMIT(oldx, 0, term.col-1);
2099 LIMIT(oldy, 0, term.row-1);
2101 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2102 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2104 /* remove the old cursor */
2105 if(term.line[oldy][oldx].state & GLYPH_SET) {
2106 sl = utf8size(term.line[oldy][oldx].c);
2107 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1, sl);
2109 xclear(oldx, oldy, oldx, oldy);
2111 /* draw the new one */
2112 if(!(term.c.state & CURSOR_HIDE)) {
2113 if(!(xw.state & WIN_FOCUSED))
2116 if(IS_SET(MODE_REVERSE))
2117 g.mode |= ATTR_REVERSE, g.fg = DefaultCS, g.bg = DefaultFG;
2120 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2121 oldx = term.c.x, oldy = term.c.y;
2127 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
2132 struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
2135 XSync(xw.dpy, False); /* necessary for a good tput flash */
2136 nanosleep(&tv, NULL);
2141 XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
2143 drawregion(0, 0, term.col, term.row);
2144 XdbeSwapBuffers(xw.dpy, swpinfo, 1);
2148 drawregion(int x1, int y1, int x2, int y2) {
2149 int ic, ib, x, y, ox, sl;
2151 char buf[DRAW_BUF_SIZ];
2152 bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN);
2154 if((sel.alt && !alt) || (!sel.alt && alt))
2156 if(!(xw.state & WIN_VISIBLE))
2159 for(y = y1; y < y2; y++) {
2162 xclear(0, y, term.col, y);
2164 base = term.line[y][0];
2166 for(x = x1; x < x2; x++) {
2167 new = term.line[y][x];
2168 if(ena_sel && *(new.c) && selected(x, y))
2169 new.mode ^= ATTR_REVERSE;
2170 if(ib > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
2171 ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
2172 xdraws(buf, base, ox, y, ic, ib);
2175 if(new.state & GLYPH_SET) {
2180 sl = utf8size(new.c);
2181 memcpy(buf+ib, new.c, sl);
2187 xdraws(buf, base, ox, y, ic, ib);
2193 expose(XEvent *ev) {
2194 XExposeEvent *e = &ev->xexpose;
2195 if(xw.state & WIN_REDRAW) {
2197 xw.state &= ~WIN_REDRAW;
2202 visibility(XEvent *ev) {
2203 XVisibilityEvent *e = &ev->xvisibility;
2204 if(e->state == VisibilityFullyObscured)
2205 xw.state &= ~WIN_VISIBLE;
2206 else if(!(xw.state & WIN_VISIBLE))
2207 /* need a full redraw for next Expose, not just a buf copy */
2208 xw.state |= WIN_VISIBLE | WIN_REDRAW;
2213 xw.state &= ~WIN_VISIBLE;
2217 xseturgency(int add) {
2218 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
2219 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
2220 XSetWMHints(xw.dpy, xw.win, h);
2226 if(ev->type == FocusIn) {
2227 xw.state |= WIN_FOCUSED;
2230 xw.state &= ~WIN_FOCUSED;
2234 kmap(KeySym k, uint state) {
2237 for(i = 0; i < LEN(key); i++) {
2238 uint mask = key[i].mask;
2239 if(key[i].k == k && ((state & mask) == mask || (mask == XK_NO_MOD && !state)))
2240 return (char*)key[i].s;
2246 kpress(XEvent *ev) {
2247 XKeyEvent *e = &ev->xkey;
2256 meta = e->state & Mod1Mask;
2257 shift = e->state & ShiftMask;
2258 len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
2260 /* 1. custom keys from config.h */
2261 if((customkey = kmap(ksym, e->state)))
2262 ttywrite(customkey, strlen(customkey));
2263 /* 2. hardcoded (overrides X lookup) */
2270 /* XXX: shift up/down doesn't work */
2271 sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', (shift ? "dacb":"DACB")[ksym - XK_Left]);
2279 if(IS_SET(MODE_CRLF))
2280 ttywrite("\r\n", 2);
2287 if(meta && len == 1)
2288 ttywrite("\033", 1);
2296 cmessage(XEvent *e) {
2298 http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
2299 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
2300 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
2301 xw.state |= WIN_FOCUSED;
2303 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
2304 xw.state &= ~WIN_FOCUSED;
2313 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
2316 xw.w = e->xconfigure.width;
2317 xw.h = e->xconfigure.height;
2318 col = (xw.w - 2*BORDER) / xw.cw;
2319 row = (xw.h - 2*BORDER) / xw.ch;
2320 if(col == term.col && row == term.row)
2324 ttyresize(col, row);
2331 int xfd = XConnectionNumber(xw.dpy), i;
2332 struct timeval drawtimeout, *tv = NULL;
2336 FD_SET(cmdfd, &rfd);
2338 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
2341 die("select failed: %s\n", SERRNO);
2345 * Stop after a certain number of reads so the user does not
2346 * feel like the system is stuttering.
2348 if(i < 1000 && FD_ISSET(cmdfd, &rfd)) {
2352 * Just wait a bit so it isn't disturbing the
2353 * user and the system is able to write something.
2355 drawtimeout.tv_sec = 0;
2356 drawtimeout.tv_usec = 5;
2363 while(XPending(xw.dpy)) {
2364 XNextEvent(xw.dpy, &ev);
2365 if(XFilterEvent(&ev, xw.win))
2367 if(handler[ev.type])
2368 (handler[ev.type])(&ev);
2377 main(int argc, char *argv[]) {
2378 int i, bitm, xr, yr;
2379 unsigned int wr, hr;
2381 xw.fw = xw.fh = xw.fx = xw.fy = 0;
2384 for(i = 1; i < argc; i++) {
2385 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
2387 if(++i < argc) opt_title = argv[i];
2390 if(++i < argc) opt_class = argv[i];
2393 if(++i < argc) opt_embed = argv[i];
2396 if(++i < argc) opt_io = argv[i];
2399 /* eat every remaining arguments */
2400 if(++i < argc) opt_cmd = &argv[i];
2406 bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
2411 if(bitm & WidthValue)
2413 if(bitm & HeightValue)
2415 if(bitm & XNegative && xw.fx == 0)
2417 if(bitm & XNegative && xw.fy == 0)
2420 if(xw.fh != 0 && xw.fw != 0)
2430 setlocale(LC_CTYPE, "");