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] [-w windowid] [-v] [-f file] [-e command...]\n"
42 #define XEMBED_FOCUS_IN 4
43 #define XEMBED_FOCUS_OUT 5
46 #define ESC_BUF_SIZ 256
47 #define ESC_ARG_SIZ 16
48 #define STR_BUF_SIZ 256
49 #define STR_ARG_SIZ 16
50 #define DRAW_BUF_SIZ 1024
52 #define XK_NO_MOD UINT_MAX
55 #define SELECT_TIMEOUT (20*1000) /* 20 ms */
56 #define DRAW_TIMEOUT (20*1000) /* 20 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 {
79 enum cursor_movement {
106 MODE_MOUSEMOTION = 64,
114 ESC_STR = 4, /* DSC, OSC, PM, APC */
116 ESC_STR_END = 16, /* a final string was encountered */
127 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
129 typedef unsigned char uchar;
130 typedef unsigned int uint;
131 typedef unsigned long ulong;
132 typedef unsigned short ushort;
135 char c[UTF_SIZ]; /* character code */
136 uchar mode; /* attribute flags */
137 ushort fg; /* foreground */
138 ushort bg; /* background */
139 uchar state; /* state flags */
145 Glyph attr; /* current char attributes */
151 /* CSI Escape sequence structs */
152 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
154 char buf[ESC_BUF_SIZ]; /* raw string */
155 int len; /* raw string length */
157 int arg[ESC_ARG_SIZ];
158 int narg; /* nb of args */
162 /* STR Escape sequence structs */
163 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
165 char type; /* ESC type ... */
166 char buf[STR_BUF_SIZ]; /* raw string */
167 int len; /* raw string length */
168 char *args[STR_ARG_SIZ];
169 int narg; /* nb of args */
172 /* Internal representation of the screen */
174 int row; /* nb row */
175 int col; /* nb col */
176 Line* line; /* screen */
177 Line* alt; /* alternate screen */
178 bool* dirty; /* dirtyness of lines */
179 TCursor c; /* cursor */
180 int top; /* top scroll limit */
181 int bot; /* bottom scroll limit */
182 int mode; /* terminal mode flags */
183 int esc; /* escape state flags */
187 /* Purely graphic info */
197 int w; /* window width */
198 int h; /* window height */
199 int ch; /* char height */
200 int cw; /* char width */
201 char state; /* focus, redraw, visible */
202 struct timeval lastdraw;
212 /* TODO: use better name for vars... */
217 struct {int x, y;} b, e;
220 struct timeval tclick1;
221 struct timeval tclick2;
226 /* Drawing Context */
228 ulong col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
239 static void die(const char*, ...);
240 static void draw(void);
241 static void drawregion(int, int, int, int);
242 static void execsh(void);
243 static void sigchld(int);
244 static void run(void);
245 static bool last_draw_too_old(void);
247 static void csidump(void);
248 static void csihandle(void);
249 static void csiparse(void);
250 static void csireset(void);
251 static void strdump(void);
252 static void strhandle(void);
253 static void strparse(void);
254 static void strreset(void);
256 static void tclearregion(int, int, int, int);
257 static void tcursor(int);
258 static void tdeletechar(int);
259 static void tdeleteline(int);
260 static void tinsertblank(int);
261 static void tinsertblankline(int);
262 static void tmoveto(int, int);
263 static void tnew(int, int);
264 static void tnewline(int);
265 static void tputtab(bool);
266 static void tputc(char*);
267 static void treset(void);
268 static int tresize(int, int);
269 static void tscrollup(int, int);
270 static void tscrolldown(int, int);
271 static void tsetattr(int*, int);
272 static void tsetchar(char*);
273 static void tsetscroll(int, int);
274 static void tswapscreen(void);
275 static void tsetdirt(int, int);
276 static void tsetmode(bool, bool, int *, int);
277 static void tfulldirt(void);
279 static void ttynew(void);
280 static void ttyread(void);
281 static void ttyresize(int, int);
282 static void ttywrite(const char *, size_t);
284 static void xdraws(char *, Glyph, int, int, int, int);
285 static void xhints(void);
286 static void xclear(int, int, int, int);
288 static void xdrawcursor(void);
289 static void xinit(void);
290 static void xloadcols(void);
291 static void xseturgency(int);
292 static void xsetsel(char*);
293 static void xresize(int, int);
295 static void expose(XEvent *);
296 static void visibility(XEvent *);
297 static void unmap(XEvent *);
298 static char* kmap(KeySym, uint);
299 static void kpress(XEvent *);
300 static void cmessage(XEvent *);
301 static void resize(XEvent *);
302 static void focus(XEvent *);
303 static void brelease(XEvent *);
304 static void bpress(XEvent *);
305 static void bmotion(XEvent *);
306 static void selnotify(XEvent *);
307 static void selrequest(XEvent *);
309 static void selinit(void);
310 static inline bool selected(int, int);
311 static void selcopy(void);
312 static void selpaste();
313 static void selscroll(int, int);
315 static int utf8decode(char *, long *);
316 static int utf8encode(long *, char *);
317 static int utf8size(char *);
318 static int isfullutf8(char *, int);
320 static void (*handler[LASTEvent])(XEvent *) = {
322 [ClientMessage] = cmessage,
323 [ConfigureNotify] = resize,
324 [VisibilityNotify] = visibility,
325 [UnmapNotify] = unmap,
329 [MotionNotify] = bmotion,
330 [ButtonPress] = bpress,
331 [ButtonRelease] = brelease,
332 [SelectionNotify] = selnotify,
333 [SelectionRequest] = selrequest,
340 static CSIEscape csiescseq;
341 static STREscape strescseq;
344 static Selection sel;
346 static char **opt_cmd = NULL;
347 static char *opt_io = NULL;
348 static char *opt_title = NULL;
349 static char *opt_embed = NULL;
350 static char *opt_class = NULL;
353 utf8decode(char *s, long *u) {
359 if(~c & B7) { /* 0xxxxxxx */
362 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
363 *u = c&(B4|B3|B2|B1|B0);
365 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
366 *u = c&(B3|B2|B1|B0);
368 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
373 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
375 if((c & (B7|B6)) != B7) /* 10xxxxxx */
378 *u |= c & (B5|B4|B3|B2|B1|B0);
380 if((n == 1 && *u < 0x80) ||
381 (n == 2 && *u < 0x800) ||
382 (n == 3 && *u < 0x10000) ||
383 (*u >= 0xD800 && *u <= 0xDFFF))
392 utf8encode(long *u, char *s) {
400 *sp = uc; /* 0xxxxxxx */
402 } else if(*u < 0x800) {
403 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
405 } else if(uc < 0x10000) {
406 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
408 } else if(uc <= 0x10FFFF) {
409 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
414 for(i=n,++sp; i>0; --i,++sp)
415 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
425 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
426 UTF-8 otherwise return 0 */
428 isfullutf8(char *s, int b) {
436 else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1)
438 else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
440 ((b == 2) && (*c2&(B7|B6)) == B7)))
442 else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
444 ((b == 2) && (*c2&(B7|B6)) == B7) ||
445 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7)))
457 else if((c&(B7|B6|B5)) == (B7|B6))
459 else if((c&(B7|B6|B5|B4)) == (B7|B6|B5))
467 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
468 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
472 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
473 if(sel.xtarget == None)
474 sel.xtarget = XA_STRING;
478 selected(int x, int y) {
479 if(sel.ey == y && sel.by == y) {
480 int bx = MIN(sel.bx, sel.ex);
481 int ex = MAX(sel.bx, sel.ex);
482 return BETWEEN(x, bx, ex);
484 return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
485 || (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
489 getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
491 *b = e->xbutton.button;
493 *x = X2COL(e->xbutton.x);
494 *y = Y2ROW(e->xbutton.y);
495 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
496 sel.b.y = MIN(sel.by, sel.ey);
497 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
498 sel.e.y = MAX(sel.by, sel.ey);
502 mousereport(XEvent *e) {
503 int x = X2COL(e->xbutton.x);
504 int y = Y2ROW(e->xbutton.y);
505 int button = e->xbutton.button;
506 int state = e->xbutton.state;
507 char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
508 static int ob, ox, oy;
511 if(e->xbutton.type == MotionNotify) {
512 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
516 } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
522 if(e->xbutton.type == ButtonPress) {
528 buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
529 + (state & Mod4Mask ? 8 : 0)
530 + (state & ControlMask ? 16 : 0);
532 ttywrite(buf, sizeof(buf));
537 if(IS_SET(MODE_MOUSE))
539 else if(e->xbutton.button == Button1) {
541 tsetdirt(sel.b.y, sel.e.y);
543 sel.ex = sel.bx = X2COL(e->xbutton.x);
544 sel.ey = sel.by = Y2ROW(e->xbutton.y);
551 int x, y, bufsize, is_selected = 0;
557 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
558 ptr = str = malloc(bufsize);
560 /* append every set & selected glyph to the selection */
561 for(y = 0; y < term.row; y++) {
562 for(x = 0; x < term.col; x++) {
563 is_selected = selected(x, y);
564 if((term.line[y][x].state & GLYPH_SET) && is_selected) {
565 int size = utf8size(term.line[y][x].c);
566 memcpy(ptr, term.line[y][x].c, size);
571 /* \n at the end of every selected line except for the last one */
572 if(is_selected && y < sel.e.y)
581 selnotify(XEvent *e) {
582 ulong nitems, ofs, rem;
589 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
590 False, AnyPropertyType, &type, &format,
591 &nitems, &rem, &data)) {
592 fprintf(stderr, "Clipboard allocation failed\n");
595 ttywrite((const char *) data, nitems * format / 8);
597 /* number of 32-bit chunks returned */
598 ofs += nitems * format / 32;
604 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY, xw.win, CurrentTime);
608 selrequest(XEvent *e) {
609 XSelectionRequestEvent *xsre;
613 xsre = (XSelectionRequestEvent *) e;
614 xev.type = SelectionNotify;
615 xev.requestor = xsre->requestor;
616 xev.selection = xsre->selection;
617 xev.target = xsre->target;
618 xev.time = xsre->time;
622 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
623 if(xsre->target == xa_targets) {
624 /* respond with the supported type */
625 Atom string = sel.xtarget;
626 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
627 XA_ATOM, 32, PropModeReplace,
628 (uchar *) &string, 1);
629 xev.property = xsre->property;
630 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
631 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
632 xsre->target, 8, PropModeReplace,
633 (uchar *) sel.clip, strlen(sel.clip));
634 xev.property = xsre->property;
637 /* all done, send a notification to the listener */
638 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
639 fprintf(stderr, "Error sending SelectionNotify event\n");
644 /* register the selection for both the clipboard and the primary */
650 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
652 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
653 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
659 brelease(XEvent *e) {
660 if(IS_SET(MODE_MOUSE)) {
664 if(e->xbutton.button == Button2)
666 else if(e->xbutton.button == Button1) {
668 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
669 term.dirty[sel.ey] = 1;
670 if(sel.bx == sel.ex && sel.by == sel.ey) {
673 gettimeofday(&now, NULL);
675 if(TIMEDIFF(now, sel.tclick2) <= TRIPLECLICK_TIMEOUT) {
676 /* triple click on the line */
677 sel.b.x = sel.bx = 0;
678 sel.e.x = sel.ex = term.col;
679 sel.b.y = sel.e.y = sel.ey;
681 } else if(TIMEDIFF(now, sel.tclick1) <= DOUBLECLICK_TIMEOUT) {
682 /* double click to select word */
684 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
685 term.line[sel.ey][sel.bx-1].c[0] != ' ') sel.bx--;
687 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
688 term.line[sel.ey][sel.ex+1].c[0] != ' ') sel.ex++;
690 sel.b.y = sel.e.y = sel.ey;
696 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
697 gettimeofday(&sel.tclick1, NULL);
703 if(IS_SET(MODE_MOUSE)) {
708 int oldey = sel.ey, oldex = sel.ex;
709 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
711 if(oldey != sel.ey || oldex != sel.ex) {
712 int starty = MIN(oldey, sel.ey);
713 int endy = MAX(oldey, sel.ey);
714 tsetdirt(starty, endy);
721 die(const char *errstr, ...) {
724 va_start(ap, errstr);
725 vfprintf(stderr, errstr, ap);
733 char *envshell = getenv("SHELL");
735 DEFAULT(envshell, SHELL);
736 putenv("TERM="TNAME);
737 args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};
738 execvp(args[0], args);
745 if(waitpid(pid, &stat, 0) < 0)
746 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
748 exit(WEXITSTATUS(stat));
757 /* seems to work fine on linux, openbsd and freebsd */
758 struct winsize w = {term.row, term.col, 0, 0};
759 if(openpty(&m, &s, NULL, NULL, &w) < 0)
760 die("openpty failed: %s\n", SERRNO);
762 switch(pid = fork()) {
764 die("fork failed\n");
767 setsid(); /* create a new process group */
768 dup2(s, STDIN_FILENO);
769 dup2(s, STDOUT_FILENO);
770 dup2(s, STDERR_FILENO);
771 if(ioctl(s, TIOCSCTTY, NULL) < 0)
772 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
780 signal(SIGCHLD, sigchld);
781 if (opt_io && !(fileio = fopen(opt_io, "w"))) {
782 fprintf(stderr, "Error opening %s:%s",
783 opt_io, strerror(errno));
791 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
793 fprintf(stderr, "\n");
798 static char buf[BUFSIZ];
799 static int buflen = 0;
802 int charsize; /* size of utf8 char in bytes */
806 /* append read bytes to unprocessed bytes */
807 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
808 die("Couldn't read from shell: %s\n", SERRNO);
810 /* process every complete utf8 char */
813 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
814 charsize = utf8decode(ptr, &utf8c);
815 utf8encode(&utf8c, s);
821 /* keep any uncomplete utf8 char for the next call */
822 memmove(buf, ptr, buflen);
826 ttywrite(const char *s, size_t n) {
827 if(write(cmdfd, s, n) == -1)
828 die("write error on tty: %s\n", SERRNO);
832 ttyresize(int x, int y) {
837 w.ws_xpixel = w.ws_ypixel = 0;
838 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
839 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
843 tsetdirt(int top, int bot)
847 LIMIT(top, 0, term.row-1);
848 LIMIT(bot, 0, term.row-1);
850 for(i = top; i <= bot; i++)
857 tsetdirt(0, term.row-1);
864 if(mode == CURSOR_SAVE)
866 else if(mode == CURSOR_LOAD)
867 term.c = c, tmoveto(c.x, c.y);
877 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
879 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
880 for (i = TAB; i < term.col; i += TAB)
882 term.top = 0, term.bot = term.row - 1;
883 term.mode = MODE_WRAP;
884 tclearregion(0, 0, term.col-1, term.row-1);
888 tnew(int col, int row) {
889 /* set screen size */
890 term.row = row, term.col = col;
891 term.line = malloc(term.row * sizeof(Line));
892 term.alt = malloc(term.row * sizeof(Line));
893 term.dirty = malloc(term.row * sizeof(*term.dirty));
894 term.tabs = malloc(term.col * sizeof(*term.tabs));
896 for(row = 0; row < term.row; row++) {
897 term.line[row] = malloc(term.col * sizeof(Glyph));
898 term.alt [row] = malloc(term.col * sizeof(Glyph));
901 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
908 Line* tmp = term.line;
909 term.line = term.alt;
911 term.mode ^= MODE_ALTSCREEN;
916 tscrolldown(int orig, int n) {
920 LIMIT(n, 0, term.bot-orig+1);
922 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
924 for(i = term.bot; i >= orig+n; i--) {
926 term.line[i] = term.line[i-n];
927 term.line[i-n] = temp;
937 tscrollup(int orig, int n) {
940 LIMIT(n, 0, term.bot-orig+1);
942 tclearregion(0, orig, term.col-1, orig+n-1);
944 for(i = orig; i <= term.bot-n; i++) {
946 term.line[i] = term.line[i+n];
947 term.line[i+n] = temp;
957 selscroll(int orig, int n) {
961 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
962 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
966 if(sel.by < term.top) {
970 if(sel.ey > term.bot) {
974 sel.b.y = sel.by, sel.b.x = sel.bx;
975 sel.e.y = sel.ey, sel.e.x = sel.ex;
980 tnewline(int first_col) {
983 tscrollup(term.top, 1);
986 tmoveto(first_col ? 0 : term.c.x, y);
992 char *p = csiescseq.buf;
996 csiescseq.priv = 1, p++;
998 while(p < csiescseq.buf+csiescseq.len) {
1000 csiescseq.arg[csiescseq.narg] *= 10;
1001 csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
1003 if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ)
1004 csiescseq.narg++, p++;
1006 csiescseq.mode = *p;
1014 tmoveto(int x, int y) {
1015 LIMIT(x, 0, term.col-1);
1016 LIMIT(y, 0, term.row-1);
1017 term.c.state &= ~CURSOR_WRAPNEXT;
1024 term.dirty[term.c.y] = 1;
1025 term.line[term.c.y][term.c.x] = term.c.attr;
1026 memcpy(term.line[term.c.y][term.c.x].c, c, UTF_SIZ);
1027 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
1031 tclearregion(int x1, int y1, int x2, int y2) {
1035 temp = x1, x1 = x2, x2 = temp;
1037 temp = y1, y1 = y2, y2 = temp;
1039 LIMIT(x1, 0, term.col-1);
1040 LIMIT(x2, 0, term.col-1);
1041 LIMIT(y1, 0, term.row-1);
1042 LIMIT(y2, 0, term.row-1);
1044 for(y = y1; y <= y2; y++) {
1046 for(x = x1; x <= x2; x++)
1047 term.line[y][x].state = 0;
1052 tdeletechar(int n) {
1053 int src = term.c.x + n;
1055 int size = term.col - src;
1057 term.dirty[term.c.y] = 1;
1059 if(src >= term.col) {
1060 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1063 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
1064 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1068 tinsertblank(int n) {
1071 int size = term.col - dst;
1073 term.dirty[term.c.y] = 1;
1075 if(dst >= term.col) {
1076 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1079 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
1080 tclearregion(src, term.c.y, dst - 1, term.c.y);
1084 tinsertblankline(int n) {
1085 if(term.c.y < term.top || term.c.y > term.bot)
1088 tscrolldown(term.c.y, n);
1092 tdeleteline(int n) {
1093 if(term.c.y < term.top || term.c.y > term.bot)
1096 tscrollup(term.c.y, n);
1100 tsetattr(int *attr, int l) {
1103 for(i = 0; i < l; i++) {
1106 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);
1107 term.c.attr.fg = DefaultFG;
1108 term.c.attr.bg = DefaultBG;
1111 term.c.attr.mode |= ATTR_BOLD;
1113 case 3: /* enter standout (highlight) mode TODO: make it italic */
1114 term.c.attr.mode |= ATTR_REVERSE;
1117 term.c.attr.mode |= ATTR_UNDERLINE;
1120 term.c.attr.mode |= ATTR_REVERSE;
1123 term.c.attr.mode &= ~ATTR_BOLD;
1125 case 23: /* leave standout (highlight) mode TODO: make it italic */
1126 term.c.attr.mode &= ~ATTR_REVERSE;
1129 term.c.attr.mode &= ~ATTR_UNDERLINE;
1132 term.c.attr.mode &= ~ATTR_REVERSE;
1135 if(i + 2 < l && attr[i + 1] == 5) {
1137 if(BETWEEN(attr[i], 0, 255))
1138 term.c.attr.fg = attr[i];
1140 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
1143 fprintf(stderr, "erresc(38): gfx attr %d unknown\n", attr[i]);
1146 term.c.attr.fg = DefaultFG;
1149 if(i + 2 < l && attr[i + 1] == 5) {
1151 if(BETWEEN(attr[i], 0, 255))
1152 term.c.attr.bg = attr[i];
1154 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
1157 fprintf(stderr, "erresc(48): gfx attr %d unknown\n", attr[i]);
1160 term.c.attr.bg = DefaultBG;
1163 if(BETWEEN(attr[i], 30, 37))
1164 term.c.attr.fg = attr[i] - 30;
1165 else if(BETWEEN(attr[i], 40, 47))
1166 term.c.attr.bg = attr[i] - 40;
1167 else if(BETWEEN(attr[i], 90, 97))
1168 term.c.attr.fg = attr[i] - 90 + 8;
1169 else if(BETWEEN(attr[i], 100, 107))
1170 term.c.attr.fg = attr[i] - 100 + 8;
1172 fprintf(stderr, "erresc(default): gfx attr %d unknown\n", attr[i]), csidump();
1179 tsetscroll(int t, int b) {
1182 LIMIT(t, 0, term.row-1);
1183 LIMIT(b, 0, term.row-1);
1193 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1196 tsetmode(bool priv, bool set, int *args, int narg) {
1199 for (lim = args + narg; args < lim; ++args) {
1203 MODBIT(term.mode, set, MODE_APPKEYPAD);
1205 case 5: /* DECSCNM -- Reverve video */
1207 MODBIT(term.mode,set, MODE_REVERSE);
1208 if (mode != term.mode)
1212 MODBIT(term.mode, set, MODE_WRAP);
1215 MODBIT(term.mode, set, MODE_CRLF);
1217 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1220 MODBIT(term.c.state, !set, CURSOR_HIDE);
1222 case 1000: /* 1000,1002: enable xterm mouse report */
1223 MODBIT(term.mode, set, MODE_MOUSEBTN);
1226 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1228 case 1049: /* = 1047 and 1048 */
1231 if(IS_SET(MODE_ALTSCREEN))
1232 tclearregion(0, 0, term.col-1, term.row-1);
1233 if ((set && !IS_SET(MODE_ALTSCREEN)) ||
1234 (!set && IS_SET(MODE_ALTSCREEN))) {
1241 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1245 "erresc: unknown private set/reset mode %d\n",
1252 MODBIT(term.mode, set, MODE_INSERT);
1256 "erresc: unknown set/reset mode %d\n",
1268 switch(csiescseq.mode) {
1271 fprintf(stderr, "erresc: unknown csi ");
1275 case '@': /* ICH -- Insert <n> blank char */
1276 DEFAULT(csiescseq.arg[0], 1);
1277 tinsertblank(csiescseq.arg[0]);
1279 case 'A': /* CUU -- Cursor <n> Up */
1281 DEFAULT(csiescseq.arg[0], 1);
1282 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1284 case 'B': /* CUD -- Cursor <n> Down */
1285 DEFAULT(csiescseq.arg[0], 1);
1286 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1288 case 'C': /* CUF -- Cursor <n> Forward */
1290 DEFAULT(csiescseq.arg[0], 1);
1291 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1293 case 'D': /* CUB -- Cursor <n> Backward */
1294 DEFAULT(csiescseq.arg[0], 1);
1295 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1297 case 'E': /* CNL -- Cursor <n> Down and first col */
1298 DEFAULT(csiescseq.arg[0], 1);
1299 tmoveto(0, term.c.y+csiescseq.arg[0]);
1301 case 'F': /* CPL -- Cursor <n> Up and first col */
1302 DEFAULT(csiescseq.arg[0], 1);
1303 tmoveto(0, term.c.y-csiescseq.arg[0]);
1305 case 'g': /* TBC -- Tabulation clear */
1306 switch (csiescseq.arg[0]) {
1307 case 0: /* clear current tab stop */
1308 term.tabs[term.c.x] = 0;
1310 case 3: /* clear all the tabs */
1311 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1317 case 'G': /* CHA -- Move to <col> */
1318 case '`': /* XXX: HPA -- same? */
1319 DEFAULT(csiescseq.arg[0], 1);
1320 tmoveto(csiescseq.arg[0]-1, term.c.y);
1322 case 'H': /* CUP -- Move to <row> <col> */
1323 case 'f': /* XXX: HVP -- same? */
1324 DEFAULT(csiescseq.arg[0], 1);
1325 DEFAULT(csiescseq.arg[1], 1);
1326 tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1328 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1329 DEFAULT(csiescseq.arg[0], 1);
1330 while (csiescseq.arg[0]--)
1333 case 'J': /* ED -- Clear screen */
1335 switch(csiescseq.arg[0]) {
1337 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1338 if(term.c.y < term.row-1)
1339 tclearregion(0, term.c.y+1, term.col-1, term.row-1);
1343 tclearregion(0, 0, term.col-1, term.c.y-1);
1344 tclearregion(0, term.c.y, term.c.x, term.c.y);
1347 tclearregion(0, 0, term.col-1, term.row-1);
1353 case 'K': /* EL -- Clear line */
1354 switch(csiescseq.arg[0]) {
1356 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1359 tclearregion(0, term.c.y, term.c.x, term.c.y);
1362 tclearregion(0, term.c.y, term.col-1, term.c.y);
1366 case 'S': /* SU -- Scroll <n> line up */
1367 DEFAULT(csiescseq.arg[0], 1);
1368 tscrollup(term.top, csiescseq.arg[0]);
1370 case 'T': /* SD -- Scroll <n> line down */
1371 DEFAULT(csiescseq.arg[0], 1);
1372 tscrolldown(term.top, csiescseq.arg[0]);
1374 case 'L': /* IL -- Insert <n> blank lines */
1375 DEFAULT(csiescseq.arg[0], 1);
1376 tinsertblankline(csiescseq.arg[0]);
1378 case 'l': /* RM -- Reset Mode */
1379 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1381 case 'M': /* DL -- Delete <n> lines */
1382 DEFAULT(csiescseq.arg[0], 1);
1383 tdeleteline(csiescseq.arg[0]);
1385 case 'X': /* ECH -- Erase <n> char */
1386 DEFAULT(csiescseq.arg[0], 1);
1387 tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
1389 case 'P': /* DCH -- Delete <n> char */
1390 DEFAULT(csiescseq.arg[0], 1);
1391 tdeletechar(csiescseq.arg[0]);
1393 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1394 DEFAULT(csiescseq.arg[0], 1);
1395 while (csiescseq.arg[0]--)
1398 case 'd': /* VPA -- Move to <row> */
1399 DEFAULT(csiescseq.arg[0], 1);
1400 tmoveto(term.c.x, csiescseq.arg[0]-1);
1402 case 'h': /* SM -- Set terminal mode */
1403 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1405 case 'm': /* SGR -- Terminal attribute (color) */
1406 tsetattr(csiescseq.arg, csiescseq.narg);
1408 case 'r': /* DECSTBM -- Set Scrolling Region */
1412 DEFAULT(csiescseq.arg[0], 1);
1413 DEFAULT(csiescseq.arg[1], term.row);
1414 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1418 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1419 tcursor(CURSOR_SAVE);
1421 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1422 tcursor(CURSOR_LOAD);
1431 for(i = 0; i < csiescseq.len; i++) {
1432 uint c = csiescseq.buf[i] & 0xff;
1433 if(isprint(c)) putchar(c);
1434 else if(c == '\n') printf("(\\n)");
1435 else if(c == '\r') printf("(\\r)");
1436 else if(c == 0x1b) printf("(\\e)");
1437 else printf("(%02x)", c);
1444 memset(&csiescseq, 0, sizeof(csiescseq));
1452 * TODO: make this being useful in case of color palette change.
1458 switch(strescseq.type) {
1459 case ']': /* OSC -- Operating System Command */
1465 * TODO: Handle special chars in string, like umlauts.
1468 XStoreName(xw.dpy, xw.win, strescseq.buf+2);
1472 XStoreName(xw.dpy, xw.win, strescseq.buf+1);
1474 case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
1477 fprintf(stderr, "erresc: unknown str ");
1482 case 'P': /* DSC -- Device Control String */
1483 case '_': /* APC -- Application Program Command */
1484 case '^': /* PM -- Privacy Message */
1486 fprintf(stderr, "erresc: unknown str ");
1496 * TODO: Implement parsing like for CSI when required.
1497 * Format: ESC type cmd ';' arg0 [';' argn] ESC \
1505 printf("ESC%c", strescseq.type);
1506 for(i = 0; i < strescseq.len; i++) {
1507 uint c = strescseq.buf[i] & 0xff;
1508 if(isprint(c)) putchar(c);
1509 else if(c == '\n') printf("(\\n)");
1510 else if(c == '\r') printf("(\\r)");
1511 else if(c == 0x1b) printf("(\\e)");
1512 else printf("(%02x)", c);
1519 memset(&strescseq, 0, sizeof(strescseq));
1523 tputtab(bool forward) {
1524 unsigned x = term.c.x;
1529 for (++x; x < term.col && !term.tabs[x]; ++x)
1534 for (--x; x > 0 && !term.tabs[x]; --x)
1537 tmoveto(x, term.c.y);
1545 putc(ascii, fileio);
1546 if(term.esc & ESC_START) {
1547 if(term.esc & ESC_CSI) {
1548 csiescseq.buf[csiescseq.len++] = ascii;
1549 if(BETWEEN(ascii, 0x40, 0x7E) || csiescseq.len >= ESC_BUF_SIZ) {
1551 csiparse(), csihandle();
1553 } else if(term.esc & ESC_STR) {
1556 term.esc = ESC_START | ESC_STR_END;
1558 case '\a': /* backwards compatibility to xterm */
1563 strescseq.buf[strescseq.len++] = ascii;
1564 if (strescseq.len+1 >= STR_BUF_SIZ) {
1569 } else if(term.esc & ESC_STR_END) {
1573 } else if(term.esc & ESC_ALTCHARSET) {
1575 case '0': /* Line drawing crap */
1576 term.c.attr.mode |= ATTR_GFX;
1578 case 'B': /* Back to regular text */
1579 term.c.attr.mode &= ~ATTR_GFX;
1582 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
1588 term.esc |= ESC_CSI;
1590 case 'P': /* DCS -- Device Control String */
1591 case '_': /* APC -- Application Program Command */
1592 case '^': /* PM -- Privacy Message */
1593 case ']': /* OSC -- Operating System Command */
1595 strescseq.type = ascii;
1596 term.esc |= ESC_STR;
1599 term.esc |= ESC_ALTCHARSET;
1601 case 'D': /* IND -- Linefeed */
1602 if(term.c.y == term.bot)
1603 tscrollup(term.top, 1);
1605 tmoveto(term.c.x, term.c.y+1);
1608 case 'E': /* NEL -- Next line */
1609 tnewline(1); /* always go to first col */
1612 case 'H': /* HTS -- Horizontal tab stop */
1613 term.tabs[term.c.x] = 1;
1616 case 'M': /* RI -- Reverse index */
1617 if(term.c.y == term.top)
1618 tscrolldown(term.top, 1);
1620 tmoveto(term.c.x, term.c.y-1);
1623 case 'c': /* RIS -- Reset to inital state */
1627 case '=': /* DECPAM -- Application keypad */
1628 term.mode |= MODE_APPKEYPAD;
1631 case '>': /* DECPNM -- Normal keypad */
1632 term.mode &= ~MODE_APPKEYPAD;
1635 case '7': /* DECSC -- Save Cursor */
1636 tcursor(CURSOR_SAVE);
1639 case '8': /* DECRC -- Restore Cursor */
1640 tcursor(CURSOR_LOAD);
1643 case '\\': /* ST -- Stop */
1647 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
1648 (uchar) ascii, isprint(ascii)?ascii:'.');
1653 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
1660 tmoveto(term.c.x-1, term.c.y);
1663 tmoveto(0, term.c.y);
1668 /* go to first col if the mode is set */
1669 tnewline(IS_SET(MODE_CRLF));
1672 if(!(xw.state & WIN_FOCUSED))
1677 term.esc = ESC_START;
1680 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
1681 tnewline(1); /* always go to first col */
1683 if(term.c.x+1 < term.col)
1684 tmoveto(term.c.x+1, term.c.y);
1686 term.c.state |= CURSOR_WRAPNEXT;
1692 tresize(int col, int row) {
1694 int minrow = MIN(row, term.row);
1695 int mincol = MIN(col, term.col);
1696 int slide = term.c.y - row + 1;
1698 if(col < 1 || row < 1)
1701 /* free unneeded rows */
1704 /* slide screen to keep cursor where we expect it -
1705 * tscrollup would work here, but we can optimize to
1706 * memmove because we're freeing the earlier lines */
1707 for(/* i = 0 */; i < slide; i++) {
1711 memmove(term.line, term.line + slide, row * sizeof(Line));
1712 memmove(term.alt, term.alt + slide, row * sizeof(Line));
1714 for(i += row; i < term.row; i++) {
1719 /* resize to new height */
1720 term.line = realloc(term.line, row * sizeof(Line));
1721 term.alt = realloc(term.alt, row * sizeof(Line));
1722 term.dirty = realloc(term.dirty, row * sizeof(*term.dirty));
1723 term.tabs = realloc(term.tabs, col * sizeof(*term.tabs));
1725 /* resize each row to new width, zero-pad if needed */
1726 for(i = 0; i < minrow; i++) {
1728 term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
1729 term.alt[i] = realloc(term.alt[i], col * sizeof(Glyph));
1730 for(x = mincol; x < col; x++) {
1731 term.line[i][x].state = 0;
1732 term.alt[i][x].state = 0;
1736 /* allocate any new rows */
1737 for(/* i == minrow */; i < row; i++) {
1739 term.line[i] = calloc(col, sizeof(Glyph));
1740 term.alt [i] = calloc(col, sizeof(Glyph));
1742 if (col > term.col) {
1743 bool *bp = term.tabs + term.col;
1745 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
1746 while (--bp > term.tabs && !*bp)
1748 for (bp += TAB; bp < term.tabs + col; bp += TAB)
1751 /* update terminal size */
1752 term.col = col, term.row = row;
1753 /* make use of the LIMIT in tmoveto */
1754 tmoveto(term.c.x, term.c.y);
1755 /* reset scrolling region */
1756 tsetscroll(0, row-1);
1762 xresize(int col, int row) {
1763 xw.w = MAX(1, 2*BORDER + col * xw.cw);
1764 xw.h = MAX(1, 2*BORDER + row * xw.ch);
1771 ulong white = WhitePixel(xw.dpy, xw.scr);
1773 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
1774 for(i = 0; i < LEN(colorname); i++) {
1777 if(!XAllocNamedColor(xw.dpy, xw.cmap, colorname[i], &color, &color)) {
1779 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1781 dc.col[i] = color.pixel;
1784 /* load colors [16-255] ; same colors as xterm */
1785 for(i = 16, r = 0; r < 6; r++)
1786 for(g = 0; g < 6; g++)
1787 for(b = 0; b < 6; b++) {
1788 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1789 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1790 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1791 if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
1793 fprintf(stderr, "Could not allocate color %d\n", i);
1795 dc.col[i] = color.pixel;
1799 for(r = 0; r < 24; r++, i++) {
1800 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1801 if (!XAllocColor(xw.dpy, xw.cmap, &color)) {
1803 fprintf(stderr, "Could not allocate color %d\n", i);
1805 dc.col[i] = color.pixel;
1810 xclear(int x1, int y1, int x2, int y2) {
1811 XSetForeground(xw.dpy, dc.gc, dc.col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG]);
1812 XFillRectangle(xw.dpy, xw.buf, dc.gc,
1813 BORDER + x1 * xw.cw, BORDER + y1 * xw.ch,
1814 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1819 XClassHint class = {opt_class ? opt_class : TNAME, TNAME};
1820 XWMHints wm = {.flags = InputHint, .input = 1};
1822 .flags = PSize | PResizeInc | PBaseSize,
1825 .height_inc = xw.ch,
1827 .base_height = 2*BORDER,
1828 .base_width = 2*BORDER,
1830 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
1834 xinitfont(char *fontstr) {
1836 char *def, **missing;
1840 set = XCreateFontSet(xw.dpy, fontstr, &missing, &n, &def);
1843 fprintf(stderr, "st: missing fontset: %s\n", missing[n]);
1844 XFreeStringList(missing);
1850 xgetfontinfo(XFontSet set, int *ascent, int *descent, short *lbearing, short *rbearing) {
1851 XFontStruct **xfonts;
1855 *ascent = *descent = *lbearing = *rbearing = 0;
1856 n = XFontsOfFontSet(set, &xfonts, &font_names);
1857 for(i = 0; i < n; i++) {
1858 *ascent = MAX(*ascent, (*xfonts)->ascent);
1859 *descent = MAX(*descent, (*xfonts)->descent);
1860 *lbearing = MAX(*lbearing, (*xfonts)->min_bounds.lbearing);
1861 *rbearing = MAX(*rbearing, (*xfonts)->max_bounds.rbearing);
1867 initfonts(char *fontstr, char *bfontstr) {
1868 if((dc.font.set = xinitfont(fontstr)) == NULL ||
1869 (dc.bfont.set = xinitfont(bfontstr)) == NULL)
1870 die("Can't load font %s\n", dc.font.set ? BOLDFONT : FONT);
1871 xgetfontinfo(dc.font.set, &dc.font.ascent, &dc.font.descent,
1872 &dc.font.lbearing, &dc.font.rbearing);
1873 xgetfontinfo(dc.bfont.set, &dc.bfont.ascent, &dc.bfont.descent,
1874 &dc.bfont.lbearing, &dc.bfont.rbearing);
1879 XSetWindowAttributes attrs;
1883 if(!(xw.dpy = XOpenDisplay(NULL)))
1884 die("Can't open display\n");
1885 xw.scr = XDefaultScreen(xw.dpy);
1888 initfonts(FONT, BOLDFONT);
1890 /* XXX: Assuming same size for bold font */
1891 xw.cw = dc.font.rbearing - dc.font.lbearing;
1892 xw.ch = dc.font.ascent + dc.font.descent;
1895 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1898 /* window - default size */
1899 xw.h = 2*BORDER + term.row * xw.ch;
1900 xw.w = 2*BORDER + term.col * xw.cw;
1902 attrs.background_pixel = dc.col[DefaultBG];
1903 attrs.border_pixel = dc.col[DefaultBG];
1904 attrs.bit_gravity = NorthWestGravity;
1905 attrs.event_mask = FocusChangeMask | KeyPressMask
1906 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1907 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask
1908 | EnterWindowMask | LeaveWindowMask;
1909 attrs.colormap = xw.cmap;
1911 parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
1912 xw.win = XCreateWindow(xw.dpy, parent, 0, 0,
1913 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1914 XDefaultVisual(xw.dpy, xw.scr),
1915 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
1918 xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
1922 xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
1923 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
1924 | XIMStatusNothing, XNClientWindow, xw.win,
1925 XNFocusWindow, xw.win, NULL);
1927 dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
1929 /* white cursor, black outline */
1930 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
1931 XDefineCursor(xw.dpy, xw.win, cursor);
1932 XRecolorCursor(xw.dpy, cursor,
1933 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
1934 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
1936 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1938 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
1939 XMapWindow(xw.dpy, xw.win);
1945 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
1946 int fg = base.fg, bg = base.bg, temp;
1947 int winx = BORDER+x*xw.cw, winy = BORDER+y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
1948 XFontSet fontset = dc.font.set;
1951 /* only switch default fg/bg if term is in RV mode */
1952 if(IS_SET(MODE_REVERSE)) {
1959 if(base.mode & ATTR_REVERSE)
1960 temp = fg, fg = bg, bg = temp;
1962 if(base.mode & ATTR_BOLD) {
1964 fontset = dc.bfont.set;
1967 XSetBackground(xw.dpy, dc.gc, dc.col[bg]);
1968 XSetForeground(xw.dpy, dc.gc, dc.col[fg]);
1970 if(base.mode & ATTR_GFX) {
1971 for(i = 0; i < bytelen; i++) {
1972 char c = gfx[(uint)s[i] % 256];
1975 else if(s[i] > 0x5f)
1980 XmbDrawImageString(xw.dpy, xw.buf, fontset, dc.gc, winx, winy, s, bytelen);
1982 if(base.mode & ATTR_UNDERLINE)
1983 XDrawLine(xw.dpy, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
1986 /* copy buffer pixmap to screen pixmap */
1989 XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
1990 XdbeSwapBuffers(xw.dpy, swpinfo, 1);
1996 static int oldx = 0;
1997 static int oldy = 0;
1999 Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
2001 LIMIT(oldx, 0, term.col-1);
2002 LIMIT(oldy, 0, term.row-1);
2004 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2005 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2007 /* remove the old cursor */
2008 if(term.line[oldy][oldx].state & GLYPH_SET) {
2009 sl = utf8size(term.line[oldy][oldx].c);
2010 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1, sl);
2012 xclear(oldx, oldy, oldx, oldy);
2014 xcopy(oldx, oldy, 1, 1);
2016 /* draw the new one */
2017 if(!(term.c.state & CURSOR_HIDE)) {
2018 if(!(xw.state & WIN_FOCUSED))
2021 if(IS_SET(MODE_REVERSE))
2022 g.mode |= ATTR_REVERSE, g.fg = DefaultCS, g.bg = DefaultFG;
2025 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2026 oldx = term.c.x, oldy = term.c.y;
2029 xcopy(term.c.x, term.c.y, 1, 1);
2034 drawregion(0, 0, term.col, term.row);
2036 gettimeofday(&xw.lastdraw, NULL);
2040 drawregion(int x1, int y1, int x2, int y2) {
2041 int ic, ib, x, y, ox, sl;
2043 char buf[DRAW_BUF_SIZ];
2045 if(!(xw.state & WIN_VISIBLE))
2048 for(y = y1; y < y2; y++) {
2051 xclear(0, y, term.col, y);
2053 base = term.line[y][0];
2055 for(x = x1; x < x2; x++) {
2056 new = term.line[y][x];
2057 if(sel.bx != -1 && *(new.c) && selected(x, y))
2058 new.mode ^= ATTR_REVERSE;
2059 if(ib > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
2060 ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
2061 xdraws(buf, base, ox, y, ic, ib);
2064 if(new.state & GLYPH_SET) {
2069 sl = utf8size(new.c);
2070 memcpy(buf+ib, new.c, sl);
2076 xdraws(buf, base, ox, y, ic, ib);
2082 expose(XEvent *ev) {
2083 XExposeEvent *e = &ev->xexpose;
2084 if(xw.state & WIN_REDRAW) {
2086 xw.state &= ~WIN_REDRAW;
2092 visibility(XEvent *ev) {
2093 XVisibilityEvent *e = &ev->xvisibility;
2094 if(e->state == VisibilityFullyObscured)
2095 xw.state &= ~WIN_VISIBLE;
2096 else if(!(xw.state & WIN_VISIBLE))
2097 /* need a full redraw for next Expose, not just a buf copy */
2098 xw.state |= WIN_VISIBLE | WIN_REDRAW;
2103 xw.state &= ~WIN_VISIBLE;
2107 xseturgency(int add) {
2108 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
2109 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
2110 XSetWMHints(xw.dpy, xw.win, h);
2116 if(ev->type == FocusIn) {
2117 xw.state |= WIN_FOCUSED;
2120 xw.state &= ~WIN_FOCUSED;
2125 kmap(KeySym k, uint state) {
2128 for(i = 0; i < LEN(key); i++) {
2129 uint mask = key[i].mask;
2130 if(key[i].k == k && ((state & mask) == mask || (mask == XK_NO_MOD && !state)))
2131 return (char*)key[i].s;
2137 kpress(XEvent *ev) {
2138 XKeyEvent *e = &ev->xkey;
2147 meta = e->state & Mod1Mask;
2148 shift = e->state & ShiftMask;
2149 len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
2151 /* 1. custom keys from config.h */
2152 if((customkey = kmap(ksym, e->state)))
2153 ttywrite(customkey, strlen(customkey));
2154 /* 2. hardcoded (overrides X lookup) */
2161 /* XXX: shift up/down doesn't work */
2162 sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', (shift ? "dacb":"DACB")[ksym - XK_Left]);
2170 if(IS_SET(MODE_CRLF))
2171 ttywrite("\r\n", 2);
2178 if(meta && len == 1)
2179 ttywrite("\033", 1);
2187 cmessage(XEvent *e) {
2189 http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
2190 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
2191 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
2192 xw.state |= WIN_FOCUSED;
2194 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
2195 xw.state &= ~WIN_FOCUSED;
2205 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
2208 xw.w = e->xconfigure.width;
2209 xw.h = e->xconfigure.height;
2210 col = (xw.w - 2*BORDER) / xw.cw;
2211 row = (xw.h - 2*BORDER) / xw.ch;
2212 if(col == term.col && row == term.row)
2214 if(tresize(col, row))
2216 ttyresize(col, row);
2221 last_draw_too_old(void) {
2223 gettimeofday(&now, NULL);
2224 return TIMEDIFF(now, xw.lastdraw) >= DRAW_TIMEOUT/1000;
2231 int xfd = XConnectionNumber(xw.dpy);
2232 struct timeval timeout = {0};
2233 bool stuff_to_print = 0;
2237 FD_SET(cmdfd, &rfd);
2240 timeout.tv_usec = SELECT_TIMEOUT;
2241 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, &timeout) < 0) {
2244 die("select failed: %s\n", SERRNO);
2246 if(FD_ISSET(cmdfd, &rfd)) {
2251 if(stuff_to_print && last_draw_too_old()) {
2256 while(XPending(xw.dpy)) {
2257 XNextEvent(xw.dpy, &ev);
2258 if(XFilterEvent(&ev, xw.win))
2260 if(handler[ev.type])
2261 (handler[ev.type])(&ev);
2267 main(int argc, char *argv[]) {
2270 for(i = 1; i < argc; i++) {
2271 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
2273 if(++i < argc) opt_title = argv[i];
2276 if(++i < argc) opt_class = argv[i];
2279 if(++i < argc) opt_embed = argv[i];
2282 if (++i < argc) opt_io = argv[i];
2285 /* eat every remaining arguments */
2286 if(++i < argc) opt_cmd = &argv[i];
2295 setlocale(LC_CTYPE, "");