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 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 xcopy(void);
292 static void xdrawcursor(void);
293 static void xinit(void);
294 static void xloadcols(void);
295 static void xresettitle(void);
296 static void xseturgency(int);
297 static void xsetsel(char*);
298 static void xresize(int, int);
300 static void expose(XEvent *);
301 static void visibility(XEvent *);
302 static void unmap(XEvent *);
303 static char* kmap(KeySym, uint);
304 static void kpress(XEvent *);
305 static void cmessage(XEvent *);
306 static void resize(XEvent *);
307 static void focus(XEvent *);
308 static void brelease(XEvent *);
309 static void bpress(XEvent *);
310 static void bmotion(XEvent *);
311 static void selnotify(XEvent *);
312 static void selclear(XEvent *);
313 static void selrequest(XEvent *);
315 static void selinit(void);
316 static inline bool selected(int, int);
317 static void selcopy(void);
318 static void selpaste(void);
319 static void selscroll(int, int);
321 static int utf8decode(char *, long *);
322 static int utf8encode(long *, char *);
323 static int utf8size(char *);
324 static int isfullutf8(char *, int);
326 static void *xmalloc(size_t);
327 static void *xrealloc(void *, size_t);
329 static void (*handler[LASTEvent])(XEvent *) = {
331 [ClientMessage] = cmessage,
332 [ConfigureNotify] = resize,
333 [VisibilityNotify] = visibility,
334 [UnmapNotify] = unmap,
338 [MotionNotify] = bmotion,
339 [ButtonPress] = bpress,
340 [ButtonRelease] = brelease,
341 [SelectionClear] = selclear,
342 [SelectionNotify] = selnotify,
343 [SelectionRequest] = selrequest,
350 static CSIEscape csiescseq;
351 static STREscape strescseq;
354 static Selection sel;
355 static int iofd = -1;
356 static char **opt_cmd = NULL;
357 static char *opt_io = NULL;
358 static char *opt_title = NULL;
359 static char *opt_embed = NULL;
360 static char *opt_class = NULL;
363 xmalloc(size_t len) {
364 void *p = malloc(len);
366 die("Out of memory");
371 xrealloc(void *p, size_t len) {
372 if((p = realloc(p, len)) == NULL)
373 die("Out of memory");
378 utf8decode(char *s, long *u) {
384 if(~c & B7) { /* 0xxxxxxx */
387 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
388 *u = c&(B4|B3|B2|B1|B0);
390 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
391 *u = c&(B3|B2|B1|B0);
393 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
398 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
400 if((c & (B7|B6)) != B7) /* 10xxxxxx */
403 *u |= c & (B5|B4|B3|B2|B1|B0);
405 if((n == 1 && *u < 0x80) ||
406 (n == 2 && *u < 0x800) ||
407 (n == 3 && *u < 0x10000) ||
408 (*u >= 0xD800 && *u <= 0xDFFF))
417 utf8encode(long *u, char *s) {
425 *sp = uc; /* 0xxxxxxx */
427 } else if(*u < 0x800) {
428 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
430 } else if(uc < 0x10000) {
431 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
433 } else if(uc <= 0x10FFFF) {
434 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
439 for(i=n,++sp; i>0; --i,++sp)
440 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
450 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
451 UTF-8 otherwise return 0 */
453 isfullutf8(char *s, int b) {
461 else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1)
463 else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
465 ((b == 2) && (*c2&(B7|B6)) == B7)))
467 else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
469 ((b == 2) && (*c2&(B7|B6)) == B7) ||
470 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7)))
482 else if((c&(B7|B6|B5)) == (B7|B6))
484 else if((c&(B7|B6|B5|B4)) == (B7|B6|B5))
492 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
493 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
497 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
498 if(sel.xtarget == None)
499 sel.xtarget = XA_STRING;
503 selected(int x, int y) {
504 if(sel.ey == y && sel.by == y) {
505 int bx = MIN(sel.bx, sel.ex);
506 int ex = MAX(sel.bx, sel.ex);
507 return BETWEEN(x, bx, ex);
509 return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
510 || (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
514 getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
516 *b = e->xbutton.button;
518 *x = X2COL(e->xbutton.x);
519 *y = Y2ROW(e->xbutton.y);
520 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
521 sel.b.y = MIN(sel.by, sel.ey);
522 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
523 sel.e.y = MAX(sel.by, sel.ey);
527 mousereport(XEvent *e) {
528 int x = X2COL(e->xbutton.x);
529 int y = Y2ROW(e->xbutton.y);
530 int button = e->xbutton.button;
531 int state = e->xbutton.state;
532 char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
533 static int ob, ox, oy;
536 if(e->xbutton.type == MotionNotify) {
537 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
541 } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
547 if(e->xbutton.type == ButtonPress) {
553 buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
554 + (state & Mod4Mask ? 8 : 0)
555 + (state & ControlMask ? 16 : 0);
557 ttywrite(buf, sizeof(buf));
562 if(IS_SET(MODE_MOUSE))
564 else if(e->xbutton.button == Button1) {
566 tsetdirt(sel.b.y, sel.e.y);
568 sel.ex = sel.bx = X2COL(e->xbutton.x);
569 sel.ey = sel.by = Y2ROW(e->xbutton.y);
576 int x, y, bufsize, is_selected = 0;
582 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
583 ptr = str = xmalloc(bufsize);
585 /* append every set & selected glyph to the selection */
586 for(y = 0; y < term.row; y++) {
587 for(x = 0; x < term.col; x++) {
588 is_selected = selected(x, y);
589 if((term.line[y][x].state & GLYPH_SET) && is_selected) {
590 int size = utf8size(term.line[y][x].c);
591 memcpy(ptr, term.line[y][x].c, size);
596 /* \n at the end of every selected line except for the last one */
597 if(is_selected && y < sel.e.y)
602 sel.alt = IS_SET(MODE_ALTSCREEN);
607 selnotify(XEvent *e) {
608 ulong nitems, ofs, rem;
615 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
616 False, AnyPropertyType, &type, &format,
617 &nitems, &rem, &data)) {
618 fprintf(stderr, "Clipboard allocation failed\n");
621 ttywrite((const char *) data, nitems * format / 8);
623 /* number of 32-bit chunks returned */
624 ofs += nitems * format / 32;
630 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY, xw.win, CurrentTime);
633 void selclear(XEvent *e) {
637 tsetdirt(sel.b.y, sel.e.y);
642 selrequest(XEvent *e) {
643 XSelectionRequestEvent *xsre;
647 xsre = (XSelectionRequestEvent *) e;
648 xev.type = SelectionNotify;
649 xev.requestor = xsre->requestor;
650 xev.selection = xsre->selection;
651 xev.target = xsre->target;
652 xev.time = xsre->time;
656 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
657 if(xsre->target == xa_targets) {
658 /* respond with the supported type */
659 Atom string = sel.xtarget;
660 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
661 XA_ATOM, 32, PropModeReplace,
662 (uchar *) &string, 1);
663 xev.property = xsre->property;
664 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
665 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
666 xsre->target, 8, PropModeReplace,
667 (uchar *) sel.clip, strlen(sel.clip));
668 xev.property = xsre->property;
671 /* all done, send a notification to the listener */
672 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
673 fprintf(stderr, "Error sending SelectionNotify event\n");
678 /* register the selection for both the clipboard and the primary */
684 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
686 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
687 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
693 brelease(XEvent *e) {
694 if(IS_SET(MODE_MOUSE)) {
698 if(e->xbutton.button == Button2)
700 else if(e->xbutton.button == Button1) {
702 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
703 term.dirty[sel.ey] = 1;
704 if(sel.bx == sel.ex && sel.by == sel.ey) {
707 gettimeofday(&now, NULL);
709 if(TIMEDIFF(now, sel.tclick2) <= TRIPLECLICK_TIMEOUT) {
710 /* triple click on the line */
711 sel.b.x = sel.bx = 0;
712 sel.e.x = sel.ex = term.col;
713 sel.b.y = sel.e.y = sel.ey;
715 } else if(TIMEDIFF(now, sel.tclick1) <= DOUBLECLICK_TIMEOUT) {
716 /* double click to select word */
718 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
719 term.line[sel.ey][sel.bx-1].c[0] != ' ') sel.bx--;
721 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
722 term.line[sel.ey][sel.ex+1].c[0] != ' ') sel.ex++;
724 sel.b.y = sel.e.y = sel.ey;
730 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
731 gettimeofday(&sel.tclick1, NULL);
737 if(IS_SET(MODE_MOUSE)) {
742 int oldey = sel.ey, oldex = sel.ex;
743 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
745 if(oldey != sel.ey || oldex != sel.ex) {
746 int starty = MIN(oldey, sel.ey);
747 int endy = MAX(oldey, sel.ey);
748 tsetdirt(starty, endy);
755 die(const char *errstr, ...) {
758 va_start(ap, errstr);
759 vfprintf(stderr, errstr, ap);
767 char *envshell = getenv("SHELL");
773 signal(SIGCHLD, SIG_DFL);
774 signal(SIGHUP, SIG_DFL);
775 signal(SIGINT, SIG_DFL);
776 signal(SIGQUIT, SIG_DFL);
777 signal(SIGTERM, SIG_DFL);
778 signal(SIGALRM, SIG_DFL);
780 DEFAULT(envshell, SHELL);
781 putenv("TERM="TNAME);
782 args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};
783 execvp(args[0], args);
790 if(waitpid(pid, &stat, 0) < 0)
791 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
793 exit(WEXITSTATUS(stat));
802 /* seems to work fine on linux, openbsd and freebsd */
803 struct winsize w = {term.row, term.col, 0, 0};
804 if(openpty(&m, &s, NULL, NULL, &w) < 0)
805 die("openpty failed: %s\n", SERRNO);
807 switch(pid = fork()) {
809 die("fork failed\n");
812 setsid(); /* create a new process group */
813 dup2(s, STDIN_FILENO);
814 dup2(s, STDOUT_FILENO);
815 dup2(s, STDERR_FILENO);
816 if(ioctl(s, TIOCSCTTY, NULL) < 0)
817 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
825 signal(SIGCHLD, sigchld);
827 if(!strcmp(opt_io, "-")) {
828 iofd = STDOUT_FILENO;
830 if((iofd = open(opt_io, O_WRONLY | O_CREAT, 0666)) < 0) {
831 fprintf(stderr, "Error opening %s:%s\n",
832 opt_io, strerror(errno));
842 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
844 fprintf(stderr, "\n");
849 static char buf[BUFSIZ];
850 static int buflen = 0;
853 int charsize; /* size of utf8 char in bytes */
857 /* append read bytes to unprocessed bytes */
858 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
859 die("Couldn't read from shell: %s\n", SERRNO);
861 /* process every complete utf8 char */
864 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
865 charsize = utf8decode(ptr, &utf8c);
866 utf8encode(&utf8c, s);
872 /* keep any uncomplete utf8 char for the next call */
873 memmove(buf, ptr, buflen);
877 ttywrite(const char *s, size_t n) {
878 if(write(cmdfd, s, n) == -1)
879 die("write error on tty: %s\n", SERRNO);
883 ttyresize(int x, int y) {
890 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
891 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
895 tsetdirt(int top, int bot)
899 LIMIT(top, 0, term.row-1);
900 LIMIT(bot, 0, term.row-1);
902 for(i = top; i <= bot; i++)
909 tsetdirt(0, term.row-1);
916 if(mode == CURSOR_SAVE)
918 else if(mode == CURSOR_LOAD)
919 term.c = c, tmoveto(c.x, c.y);
929 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
931 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
932 for(i = TAB; i < term.col; i += TAB)
934 term.top = 0, term.bot = term.row - 1;
935 term.mode = MODE_WRAP;
936 tclearregion(0, 0, term.col-1, term.row-1);
940 tnew(int col, int row) {
941 /* set screen size */
942 term.row = row, term.col = col;
943 term.line = xmalloc(term.row * sizeof(Line));
944 term.alt = xmalloc(term.row * sizeof(Line));
945 term.dirty = xmalloc(term.row * sizeof(*term.dirty));
946 term.tabs = xmalloc(term.col * sizeof(*term.tabs));
948 for(row = 0; row < term.row; row++) {
949 term.line[row] = xmalloc(term.col * sizeof(Glyph));
950 term.alt [row] = xmalloc(term.col * sizeof(Glyph));
953 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
960 Line* tmp = term.line;
961 term.line = term.alt;
963 term.mode ^= MODE_ALTSCREEN;
968 tscrolldown(int orig, int n) {
972 LIMIT(n, 0, term.bot-orig+1);
974 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
976 for(i = term.bot; i >= orig+n; i--) {
978 term.line[i] = term.line[i-n];
979 term.line[i-n] = temp;
989 tscrollup(int orig, int n) {
992 LIMIT(n, 0, term.bot-orig+1);
994 tclearregion(0, orig, term.col-1, orig+n-1);
996 for(i = orig; i <= term.bot-n; i++) {
998 term.line[i] = term.line[i+n];
999 term.line[i+n] = temp;
1002 term.dirty[i+n] = 1;
1005 selscroll(orig, -n);
1009 selscroll(int orig, int n) {
1013 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1014 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1018 if(sel.by < term.top) {
1022 if(sel.ey > term.bot) {
1026 sel.b.y = sel.by, sel.b.x = sel.bx;
1027 sel.e.y = sel.ey, sel.e.x = sel.ex;
1032 tnewline(int first_col) {
1035 tscrollup(term.top, 1);
1038 tmoveto(first_col ? 0 : term.c.x, y);
1043 /* int noarg = 1; */
1044 char *p = csiescseq.buf;
1048 csiescseq.priv = 1, p++;
1050 while(p < csiescseq.buf+csiescseq.len) {
1051 while(isdigit(*p)) {
1052 csiescseq.arg[csiescseq.narg] *= 10;
1053 csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
1055 if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ)
1056 csiescseq.narg++, p++;
1058 csiescseq.mode = *p;
1066 tmoveto(int x, int y) {
1067 LIMIT(x, 0, term.col-1);
1068 LIMIT(y, 0, term.row-1);
1069 term.c.state &= ~CURSOR_WRAPNEXT;
1076 term.dirty[term.c.y] = 1;
1077 term.line[term.c.y][term.c.x] = term.c.attr;
1078 memcpy(term.line[term.c.y][term.c.x].c, c, UTF_SIZ);
1079 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
1083 tclearregion(int x1, int y1, int x2, int y2) {
1087 temp = x1, x1 = x2, x2 = temp;
1089 temp = y1, y1 = y2, y2 = temp;
1091 LIMIT(x1, 0, term.col-1);
1092 LIMIT(x2, 0, term.col-1);
1093 LIMIT(y1, 0, term.row-1);
1094 LIMIT(y2, 0, term.row-1);
1096 for(y = y1; y <= y2; y++) {
1098 for(x = x1; x <= x2; x++)
1099 term.line[y][x].state = 0;
1104 tdeletechar(int n) {
1105 int src = term.c.x + n;
1107 int size = term.col - src;
1109 term.dirty[term.c.y] = 1;
1111 if(src >= term.col) {
1112 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1115 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
1116 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1120 tinsertblank(int n) {
1123 int size = term.col - dst;
1125 term.dirty[term.c.y] = 1;
1127 if(dst >= term.col) {
1128 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1131 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
1132 tclearregion(src, term.c.y, dst - 1, term.c.y);
1136 tinsertblankline(int n) {
1137 if(term.c.y < term.top || term.c.y > term.bot)
1140 tscrolldown(term.c.y, n);
1144 tdeleteline(int n) {
1145 if(term.c.y < term.top || term.c.y > term.bot)
1148 tscrollup(term.c.y, n);
1152 tsetattr(int *attr, int l) {
1155 for(i = 0; i < l; i++) {
1158 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
1159 | ATTR_ITALIC | ATTR_BLINK);
1160 term.c.attr.fg = DefaultFG;
1161 term.c.attr.bg = DefaultBG;
1164 term.c.attr.mode |= ATTR_BOLD;
1166 case 3: /* enter standout (highlight) */
1167 term.c.attr.mode |= ATTR_ITALIC;
1170 term.c.attr.mode |= ATTR_UNDERLINE;
1173 term.c.attr.mode |= ATTR_BLINK;
1176 term.c.attr.mode |= ATTR_REVERSE;
1180 term.c.attr.mode &= ~ATTR_BOLD;
1182 case 23: /* leave standout (highlight) mode */
1183 term.c.attr.mode &= ~ATTR_ITALIC;
1186 term.c.attr.mode &= ~ATTR_UNDERLINE;
1189 term.c.attr.mode &= ~ATTR_BLINK;
1192 term.c.attr.mode &= ~ATTR_REVERSE;
1195 if(i + 2 < l && attr[i + 1] == 5) {
1197 if(BETWEEN(attr[i], 0, 255))
1198 term.c.attr.fg = attr[i];
1200 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
1203 fprintf(stderr, "erresc(38): gfx attr %d unknown\n", attr[i]);
1206 term.c.attr.fg = DefaultFG;
1209 if(i + 2 < l && attr[i + 1] == 5) {
1211 if(BETWEEN(attr[i], 0, 255))
1212 term.c.attr.bg = attr[i];
1214 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
1217 fprintf(stderr, "erresc(48): gfx attr %d unknown\n", attr[i]);
1220 term.c.attr.bg = DefaultBG;
1223 if(BETWEEN(attr[i], 30, 37))
1224 term.c.attr.fg = attr[i] - 30;
1225 else if(BETWEEN(attr[i], 40, 47))
1226 term.c.attr.bg = attr[i] - 40;
1227 else if(BETWEEN(attr[i], 90, 97))
1228 term.c.attr.fg = attr[i] - 90 + 8;
1229 else if(BETWEEN(attr[i], 100, 107))
1230 term.c.attr.bg = attr[i] - 100 + 8;
1232 fprintf(stderr, "erresc(default): gfx attr %d unknown\n", attr[i]), csidump();
1239 tsetscroll(int t, int b) {
1242 LIMIT(t, 0, term.row-1);
1243 LIMIT(b, 0, term.row-1);
1253 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1256 tsetmode(bool priv, bool set, int *args, int narg) {
1259 for(lim = args + narg; args < lim; ++args) {
1263 MODBIT(term.mode, set, MODE_APPKEYPAD);
1265 case 5: /* DECSCNM -- Reverve video */
1267 MODBIT(term.mode,set, MODE_REVERSE);
1268 if(mode != term.mode)
1272 MODBIT(term.mode, set, MODE_WRAP);
1275 MODBIT(term.mode, set, MODE_CRLF);
1277 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1280 MODBIT(term.c.state, !set, CURSOR_HIDE);
1282 case 1000: /* 1000,1002: enable xterm mouse report */
1283 MODBIT(term.mode, set, MODE_MOUSEBTN);
1286 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1288 case 1049: /* = 1047 and 1048 */
1291 if(IS_SET(MODE_ALTSCREEN))
1292 tclearregion(0, 0, term.col-1, term.row-1);
1293 if((set && !IS_SET(MODE_ALTSCREEN)) ||
1294 (!set && IS_SET(MODE_ALTSCREEN))) {
1301 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1305 "erresc: unknown private set/reset mode %d\n",
1312 MODBIT(term.mode, set, MODE_INSERT);
1316 "erresc: unknown set/reset mode %d\n",
1328 switch(csiescseq.mode) {
1331 fprintf(stderr, "erresc: unknown csi ");
1335 case '@': /* ICH -- Insert <n> blank char */
1336 DEFAULT(csiescseq.arg[0], 1);
1337 tinsertblank(csiescseq.arg[0]);
1339 case 'A': /* CUU -- Cursor <n> Up */
1341 DEFAULT(csiescseq.arg[0], 1);
1342 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1344 case 'B': /* CUD -- Cursor <n> Down */
1345 DEFAULT(csiescseq.arg[0], 1);
1346 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1348 case 'C': /* CUF -- Cursor <n> Forward */
1350 DEFAULT(csiescseq.arg[0], 1);
1351 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1353 case 'D': /* CUB -- Cursor <n> Backward */
1354 DEFAULT(csiescseq.arg[0], 1);
1355 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1357 case 'E': /* CNL -- Cursor <n> Down and first col */
1358 DEFAULT(csiescseq.arg[0], 1);
1359 tmoveto(0, term.c.y+csiescseq.arg[0]);
1361 case 'F': /* CPL -- Cursor <n> Up and first col */
1362 DEFAULT(csiescseq.arg[0], 1);
1363 tmoveto(0, term.c.y-csiescseq.arg[0]);
1365 case 'g': /* TBC -- Tabulation clear */
1366 switch (csiescseq.arg[0]) {
1367 case 0: /* clear current tab stop */
1368 term.tabs[term.c.x] = 0;
1370 case 3: /* clear all the tabs */
1371 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1377 case 'G': /* CHA -- Move to <col> */
1379 DEFAULT(csiescseq.arg[0], 1);
1380 tmoveto(csiescseq.arg[0]-1, term.c.y);
1382 case 'H': /* CUP -- Move to <row> <col> */
1384 DEFAULT(csiescseq.arg[0], 1);
1385 DEFAULT(csiescseq.arg[1], 1);
1386 tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1388 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1389 DEFAULT(csiescseq.arg[0], 1);
1390 while(csiescseq.arg[0]--)
1393 case 'J': /* ED -- Clear screen */
1395 switch(csiescseq.arg[0]) {
1397 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1398 if(term.c.y < term.row-1)
1399 tclearregion(0, term.c.y+1, term.col-1, term.row-1);
1403 tclearregion(0, 0, term.col-1, term.c.y-1);
1404 tclearregion(0, term.c.y, term.c.x, term.c.y);
1407 tclearregion(0, 0, term.col-1, term.row-1);
1413 case 'K': /* EL -- Clear line */
1414 switch(csiescseq.arg[0]) {
1416 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1419 tclearregion(0, term.c.y, term.c.x, term.c.y);
1422 tclearregion(0, term.c.y, term.col-1, term.c.y);
1426 case 'S': /* SU -- Scroll <n> line up */
1427 DEFAULT(csiescseq.arg[0], 1);
1428 tscrollup(term.top, csiescseq.arg[0]);
1430 case 'T': /* SD -- Scroll <n> line down */
1431 DEFAULT(csiescseq.arg[0], 1);
1432 tscrolldown(term.top, csiescseq.arg[0]);
1434 case 'L': /* IL -- Insert <n> blank lines */
1435 DEFAULT(csiescseq.arg[0], 1);
1436 tinsertblankline(csiescseq.arg[0]);
1438 case 'l': /* RM -- Reset Mode */
1439 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1441 case 'M': /* DL -- Delete <n> lines */
1442 DEFAULT(csiescseq.arg[0], 1);
1443 tdeleteline(csiescseq.arg[0]);
1445 case 'X': /* ECH -- Erase <n> char */
1446 DEFAULT(csiescseq.arg[0], 1);
1447 tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
1449 case 'P': /* DCH -- Delete <n> char */
1450 DEFAULT(csiescseq.arg[0], 1);
1451 tdeletechar(csiescseq.arg[0]);
1453 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1454 DEFAULT(csiescseq.arg[0], 1);
1455 while(csiescseq.arg[0]--)
1458 case 'd': /* VPA -- Move to <row> */
1459 DEFAULT(csiescseq.arg[0], 1);
1460 tmoveto(term.c.x, csiescseq.arg[0]-1);
1462 case 'h': /* SM -- Set terminal mode */
1463 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1465 case 'm': /* SGR -- Terminal attribute (color) */
1466 tsetattr(csiescseq.arg, csiescseq.narg);
1468 case 'r': /* DECSTBM -- Set Scrolling Region */
1472 DEFAULT(csiescseq.arg[0], 1);
1473 DEFAULT(csiescseq.arg[1], term.row);
1474 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1478 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1479 tcursor(CURSOR_SAVE);
1481 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1482 tcursor(CURSOR_LOAD);
1491 for(i = 0; i < csiescseq.len; i++) {
1492 uint c = csiescseq.buf[i] & 0xff;
1493 if(isprint(c)) putchar(c);
1494 else if(c == '\n') printf("(\\n)");
1495 else if(c == '\r') printf("(\\r)");
1496 else if(c == 0x1b) printf("(\\e)");
1497 else printf("(%02x)", c);
1504 memset(&csiescseq, 0, sizeof(csiescseq));
1512 * TODO: make this being useful in case of color palette change.
1518 switch(strescseq.type) {
1519 case ']': /* OSC -- Operating System Command */
1525 * TODO: Handle special chars in string, like umlauts.
1528 XStoreName(xw.dpy, xw.win, strescseq.buf+2);
1532 XStoreName(xw.dpy, xw.win, strescseq.buf+1);
1534 case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
1537 fprintf(stderr, "erresc: unknown str ");
1542 case 'k': /* old title set compatibility */
1543 XStoreName(xw.dpy, xw.win, strescseq.buf);
1545 case 'P': /* DSC -- Device Control String */
1546 case '_': /* APC -- Application Program Command */
1547 case '^': /* PM -- Privacy Message */
1549 fprintf(stderr, "erresc: unknown str ");
1559 * TODO: Implement parsing like for CSI when required.
1560 * Format: ESC type cmd ';' arg0 [';' argn] ESC \
1568 printf("ESC%c", strescseq.type);
1569 for(i = 0; i < strescseq.len; i++) {
1570 uint c = strescseq.buf[i] & 0xff;
1571 if(isprint(c)) putchar(c);
1572 else if(c == '\n') printf("(\\n)");
1573 else if(c == '\r') printf("(\\r)");
1574 else if(c == 0x1b) printf("(\\e)");
1575 else printf("(%02x)", c);
1582 memset(&strescseq, 0, sizeof(strescseq));
1586 tputtab(bool forward) {
1587 unsigned x = term.c.x;
1592 for(++x; x < term.col && !term.tabs[x]; ++x)
1597 for(--x; x > 0 && !term.tabs[x]; --x)
1600 tmoveto(x, term.c.y);
1610 if(term.esc & ESC_START) {
1611 if(term.esc & ESC_CSI) {
1612 csiescseq.buf[csiescseq.len++] = ascii;
1613 if(BETWEEN(ascii, 0x40, 0x7E) || csiescseq.len >= ESC_BUF_SIZ) {
1615 csiparse(), csihandle();
1617 } else if(term.esc & ESC_STR) {
1620 term.esc = ESC_START | ESC_STR_END;
1622 case '\a': /* backwards compatibility to xterm */
1627 strescseq.buf[strescseq.len++] = ascii;
1628 if(strescseq.len+1 >= STR_BUF_SIZ) {
1633 } else if(term.esc & ESC_STR_END) {
1637 } else if(term.esc & ESC_ALTCHARSET) {
1639 case '0': /* Line drawing crap */
1640 term.c.attr.mode |= ATTR_GFX;
1642 case 'B': /* Back to regular text */
1643 term.c.attr.mode &= ~ATTR_GFX;
1646 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
1652 term.esc |= ESC_CSI;
1654 case 'P': /* DCS -- Device Control String */
1655 case '_': /* APC -- Application Program Command */
1656 case '^': /* PM -- Privacy Message */
1657 case ']': /* OSC -- Operating System Command */
1658 case 'k': /* old title set compatibility */
1660 strescseq.type = ascii;
1661 term.esc |= ESC_STR;
1664 term.esc |= ESC_ALTCHARSET;
1666 case 'D': /* IND -- Linefeed */
1667 if(term.c.y == term.bot)
1668 tscrollup(term.top, 1);
1670 tmoveto(term.c.x, term.c.y+1);
1673 case 'E': /* NEL -- Next line */
1674 tnewline(1); /* always go to first col */
1677 case 'H': /* HTS -- Horizontal tab stop */
1678 term.tabs[term.c.x] = 1;
1681 case 'M': /* RI -- Reverse index */
1682 if(term.c.y == term.top)
1683 tscrolldown(term.top, 1);
1685 tmoveto(term.c.x, term.c.y-1);
1688 case 'c': /* RIS -- Reset to inital state */
1693 case '=': /* DECPAM -- Application keypad */
1694 term.mode |= MODE_APPKEYPAD;
1697 case '>': /* DECPNM -- Normal keypad */
1698 term.mode &= ~MODE_APPKEYPAD;
1701 case '7': /* DECSC -- Save Cursor */
1702 tcursor(CURSOR_SAVE);
1705 case '8': /* DECRC -- Restore Cursor */
1706 tcursor(CURSOR_LOAD);
1709 case '\\': /* ST -- Stop */
1713 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
1714 (uchar) ascii, isprint(ascii)?ascii:'.');
1719 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
1722 case '\0': /* padding character, do nothing */
1728 tmoveto(term.c.x-1, term.c.y);
1731 tmoveto(0, term.c.y);
1736 /* go to first col if the mode is set */
1737 tnewline(IS_SET(MODE_CRLF));
1740 if(!(xw.state & WIN_FOCUSED))
1745 term.esc = ESC_START;
1748 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
1749 tnewline(1); /* always go to first col */
1751 if(term.c.x+1 < term.col)
1752 tmoveto(term.c.x+1, term.c.y);
1754 term.c.state |= CURSOR_WRAPNEXT;
1760 tresize(int col, int row) {
1762 int minrow = MIN(row, term.row);
1763 int mincol = MIN(col, term.col);
1764 int slide = term.c.y - row + 1;
1766 if(col < 1 || row < 1)
1769 /* free unneeded rows */
1772 /* slide screen to keep cursor where we expect it -
1773 * tscrollup would work here, but we can optimize to
1774 * memmove because we're freeing the earlier lines */
1775 for(/* i = 0 */; i < slide; i++) {
1779 memmove(term.line, term.line + slide, row * sizeof(Line));
1780 memmove(term.alt, term.alt + slide, row * sizeof(Line));
1782 for(i += row; i < term.row; i++) {
1787 /* resize to new height */
1788 term.line = xrealloc(term.line, row * sizeof(Line));
1789 term.alt = xrealloc(term.alt, row * sizeof(Line));
1790 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
1791 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
1793 /* resize each row to new width, zero-pad if needed */
1794 for(i = 0; i < minrow; i++) {
1796 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
1797 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
1798 for(x = mincol; x < col; x++) {
1799 term.line[i][x].state = 0;
1800 term.alt[i][x].state = 0;
1804 /* allocate any new rows */
1805 for(/* i == minrow */; i < row; i++) {
1807 term.line[i] = calloc(col, sizeof(Glyph));
1808 term.alt [i] = calloc(col, sizeof(Glyph));
1810 if(col > term.col) {
1811 bool *bp = term.tabs + term.col;
1813 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
1814 while(--bp > term.tabs && !*bp)
1816 for(bp += TAB; bp < term.tabs + col; bp += TAB)
1819 /* update terminal size */
1820 term.col = col, term.row = row;
1821 /* make use of the LIMIT in tmoveto */
1822 tmoveto(term.c.x, term.c.y);
1823 /* reset scrolling region */
1824 tsetscroll(0, row-1);
1830 xresize(int col, int row) {
1831 xw.w = MAX(1, 2*BORDER + col * xw.cw);
1832 xw.h = MAX(1, 2*BORDER + row * xw.ch);
1839 ulong white = WhitePixel(xw.dpy, xw.scr);
1841 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
1842 for(i = 0; i < LEN(colorname); i++) {
1845 if(!XAllocNamedColor(xw.dpy, xw.cmap, colorname[i], &color, &color)) {
1847 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1849 dc.col[i] = color.pixel;
1852 /* load colors [16-255] ; same colors as xterm */
1853 for(i = 16, r = 0; r < 6; r++)
1854 for(g = 0; g < 6; g++)
1855 for(b = 0; b < 6; b++) {
1856 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1857 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1858 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1859 if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
1861 fprintf(stderr, "Could not allocate color %d\n", i);
1863 dc.col[i] = color.pixel;
1867 for(r = 0; r < 24; r++, i++) {
1868 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1869 if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
1871 fprintf(stderr, "Could not allocate color %d\n", i);
1873 dc.col[i] = color.pixel;
1878 xclear(int x1, int y1, int x2, int y2) {
1879 XSetForeground(xw.dpy, dc.gc, dc.col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG]);
1880 XFillRectangle(xw.dpy, xw.buf, dc.gc,
1881 BORDER + x1 * xw.cw, BORDER + y1 * xw.ch,
1882 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1887 XClassHint class = {opt_class ? opt_class : TNAME, TNAME};
1888 XWMHints wm = {.flags = InputHint, .input = 1};
1889 XSizeHints *sizeh = NULL;
1891 sizeh = XAllocSizeHints();
1892 if(xw.isfixed == False) {
1893 sizeh->flags = PSize | PResizeInc | PBaseSize;
1894 sizeh->height = xw.h;
1895 sizeh->width = xw.w;
1896 sizeh->height_inc = xw.ch;
1897 sizeh->width_inc = xw.cw;
1898 sizeh->base_height = 2*BORDER;
1899 sizeh->base_width = 2*BORDER;
1901 sizeh->flags = PMaxSize | PMinSize;
1902 sizeh->min_width = sizeh->max_width = xw.fw;
1903 sizeh->min_height = sizeh->max_height = xw.fh;
1906 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
1911 xinitfont(char *fontstr) {
1913 char *def, **missing;
1917 set = XCreateFontSet(xw.dpy, fontstr, &missing, &n, &def);
1920 fprintf(stderr, "st: missing fontset: %s\n", missing[n]);
1921 XFreeStringList(missing);
1927 xgetfontinfo(XFontSet set, int *ascent, int *descent, short *lbearing, short *rbearing) {
1928 XFontStruct **xfonts;
1932 *ascent = *descent = *lbearing = *rbearing = 0;
1933 n = XFontsOfFontSet(set, &xfonts, &font_names);
1934 for(i = 0; i < n; i++) {
1935 *ascent = MAX(*ascent, (*xfonts)->ascent);
1936 *descent = MAX(*descent, (*xfonts)->descent);
1937 *lbearing = MAX(*lbearing, (*xfonts)->min_bounds.lbearing);
1938 *rbearing = MAX(*rbearing, (*xfonts)->max_bounds.rbearing);
1944 initfonts(char *fontstr, char *bfontstr, char *ifontstr, char *ibfontstr) {
1945 if((dc.font.set = xinitfont(fontstr)) == NULL)
1946 die("Can't load font %s\n", fontstr);
1947 if((dc.bfont.set = xinitfont(bfontstr)) == NULL)
1948 die("Can't load bfont %s\n", bfontstr);
1949 if((dc.ifont.set = xinitfont(ifontstr)) == NULL)
1950 die("Can't load ifont %s\n", ifontstr);
1951 if((dc.ibfont.set = xinitfont(ibfontstr)) == NULL)
1952 die("Can't load ibfont %s\n", ibfontstr);
1954 xgetfontinfo(dc.font.set, &dc.font.ascent, &dc.font.descent,
1955 &dc.font.lbearing, &dc.font.rbearing);
1956 xgetfontinfo(dc.bfont.set, &dc.bfont.ascent, &dc.bfont.descent,
1957 &dc.bfont.lbearing, &dc.bfont.rbearing);
1958 xgetfontinfo(dc.ifont.set, &dc.ifont.ascent, &dc.ifont.descent,
1959 &dc.ifont.lbearing, &dc.ifont.rbearing);
1960 xgetfontinfo(dc.ibfont.set, &dc.ibfont.ascent, &dc.ibfont.descent,
1961 &dc.ibfont.lbearing, &dc.ibfont.rbearing);
1966 XSetWindowAttributes attrs;
1969 int sw, sh, major, minor;
1971 if(!(xw.dpy = XOpenDisplay(NULL)))
1972 die("Can't open display\n");
1973 xw.scr = XDefaultScreen(xw.dpy);
1976 initfonts(FONT, BOLDFONT, ITALICFONT, ITALICBOLDFONT);
1978 /* XXX: Assuming same size for bold font */
1979 xw.cw = dc.font.rbearing - dc.font.lbearing;
1980 xw.ch = dc.font.ascent + dc.font.descent;
1983 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1986 /* adjust fixed window geometry */
1988 sw = DisplayWidth(xw.dpy, xw.scr);
1989 sh = DisplayHeight(xw.dpy, xw.scr);
1991 xw.fx = sw + xw.fx - xw.fw - 1;
1993 xw.fy = sh + xw.fy - xw.fh - 1;
1998 /* window - default size */
1999 xw.h = 2*BORDER + term.row * xw.ch;
2000 xw.w = 2*BORDER + term.col * xw.cw;
2005 attrs.background_pixel = dc.col[DefaultBG];
2006 attrs.border_pixel = dc.col[DefaultBG];
2007 attrs.bit_gravity = NorthWestGravity;
2008 attrs.event_mask = FocusChangeMask | KeyPressMask
2009 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2010 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2011 attrs.colormap = xw.cmap;
2013 parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
2014 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2015 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2016 XDefaultVisual(xw.dpy, xw.scr),
2017 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2020 if(!XdbeQueryExtension(xw.dpy, &major, &minor))
2021 die("Xdbe extension is not present\n");
2022 xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
2025 xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
2026 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2027 | XIMStatusNothing, XNClientWindow, xw.win,
2028 XNFocusWindow, xw.win, NULL);
2030 dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
2032 /* white cursor, black outline */
2033 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2034 XDefineCursor(xw.dpy, xw.win, cursor);
2035 XRecolorCursor(xw.dpy, cursor,
2036 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2037 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2039 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2042 XMapWindow(xw.dpy, xw.win);
2048 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2049 int fg = base.fg, bg = base.bg, temp;
2050 int winx = BORDER+x*xw.cw, winy = BORDER+y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
2051 XFontSet fontset = dc.font.set;
2054 /* only switch default fg/bg if term is in RV mode */
2055 if(IS_SET(MODE_REVERSE)) {
2062 if(base.mode & ATTR_REVERSE)
2063 temp = fg, fg = bg, bg = temp;
2065 if(base.mode & ATTR_BOLD) {
2067 fontset = dc.bfont.set;
2070 if(base.mode & ATTR_ITALIC)
2071 fontset = dc.ifont.set;
2072 if(base.mode & (ATTR_ITALIC|ATTR_ITALIC))
2073 fontset = dc.ibfont.set;
2075 XSetBackground(xw.dpy, dc.gc, dc.col[bg]);
2076 XSetForeground(xw.dpy, dc.gc, dc.col[fg]);
2078 if(base.mode & ATTR_GFX) {
2079 for(i = 0; i < bytelen; i++) {
2080 char c = gfx[(uint)s[i] % 256];
2083 else if(s[i] > 0x5f)
2088 XmbDrawImageString(xw.dpy, xw.buf, fontset, dc.gc, winx, winy, s, bytelen);
2090 if(base.mode & ATTR_UNDERLINE)
2091 XDrawLine(xw.dpy, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
2094 /* copy buffer pixmap to screen pixmap */
2097 XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
2098 XdbeSwapBuffers(xw.dpy, swpinfo, 1);
2103 static int oldx = 0;
2104 static int oldy = 0;
2106 Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
2108 LIMIT(oldx, 0, term.col-1);
2109 LIMIT(oldy, 0, term.row-1);
2111 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2112 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2114 /* remove the old cursor */
2115 if(term.line[oldy][oldx].state & GLYPH_SET) {
2116 sl = utf8size(term.line[oldy][oldx].c);
2117 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1, sl);
2119 xclear(oldx, oldy, oldx, oldy);
2123 /* draw the new one */
2124 if(!(term.c.state & CURSOR_HIDE)) {
2125 if(!(xw.state & WIN_FOCUSED))
2128 if(IS_SET(MODE_REVERSE))
2129 g.mode |= ATTR_REVERSE, g.fg = DefaultCS, g.bg = DefaultFG;
2132 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2133 oldx = term.c.x, oldy = term.c.y;
2141 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
2146 struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
2149 XSync(xw.dpy, False); /* necessary for a good tput flash */
2150 nanosleep(&tv, NULL);
2155 drawregion(0, 0, term.col, term.row);
2160 drawregion(int x1, int y1, int x2, int y2) {
2161 int ic, ib, x, y, ox, sl;
2163 char buf[DRAW_BUF_SIZ];
2164 bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN);
2166 if((sel.alt && !alt) || (!sel.alt && alt))
2168 if(!(xw.state & WIN_VISIBLE))
2171 for(y = y1; y < y2; y++) {
2174 xclear(0, y, term.col, y);
2176 base = term.line[y][0];
2178 for(x = x1; x < x2; x++) {
2179 new = term.line[y][x];
2180 if(ena_sel && *(new.c) && selected(x, y))
2181 new.mode ^= ATTR_REVERSE;
2182 if(ib > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
2183 ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
2184 xdraws(buf, base, ox, y, ic, ib);
2187 if(new.state & GLYPH_SET) {
2192 sl = utf8size(new.c);
2193 memcpy(buf+ib, new.c, sl);
2199 xdraws(buf, base, ox, y, ic, ib);
2205 expose(XEvent *ev) {
2206 XExposeEvent *e = &ev->xexpose;
2207 if(xw.state & WIN_REDRAW) {
2209 xw.state &= ~WIN_REDRAW;
2215 visibility(XEvent *ev) {
2216 XVisibilityEvent *e = &ev->xvisibility;
2217 if(e->state == VisibilityFullyObscured)
2218 xw.state &= ~WIN_VISIBLE;
2219 else if(!(xw.state & WIN_VISIBLE))
2220 /* need a full redraw for next Expose, not just a buf copy */
2221 xw.state |= WIN_VISIBLE | WIN_REDRAW;
2226 xw.state &= ~WIN_VISIBLE;
2230 xseturgency(int add) {
2231 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
2232 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
2233 XSetWMHints(xw.dpy, xw.win, h);
2239 if(ev->type == FocusIn) {
2240 xw.state |= WIN_FOCUSED;
2243 xw.state &= ~WIN_FOCUSED;
2248 kmap(KeySym k, uint state) {
2251 for(i = 0; i < LEN(key); i++) {
2252 uint mask = key[i].mask;
2253 if(key[i].k == k && ((state & mask) == mask || (mask == XK_NO_MOD && !state)))
2254 return (char*)key[i].s;
2260 kpress(XEvent *ev) {
2261 XKeyEvent *e = &ev->xkey;
2270 meta = e->state & Mod1Mask;
2271 shift = e->state & ShiftMask;
2272 len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
2274 /* 1. custom keys from config.h */
2275 if((customkey = kmap(ksym, e->state)))
2276 ttywrite(customkey, strlen(customkey));
2277 /* 2. hardcoded (overrides X lookup) */
2284 /* XXX: shift up/down doesn't work */
2285 sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', (shift ? "dacb":"DACB")[ksym - XK_Left]);
2293 if(IS_SET(MODE_CRLF))
2294 ttywrite("\r\n", 2);
2301 if(meta && len == 1)
2302 ttywrite("\033", 1);
2310 cmessage(XEvent *e) {
2312 http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
2313 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
2314 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
2315 xw.state |= WIN_FOCUSED;
2317 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
2318 xw.state &= ~WIN_FOCUSED;
2328 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
2331 xw.w = e->xconfigure.width;
2332 xw.h = e->xconfigure.height;
2333 col = (xw.w - 2*BORDER) / xw.cw;
2334 row = (xw.h - 2*BORDER) / xw.ch;
2335 if(col == term.col && row == term.row)
2337 if(tresize(col, row))
2340 ttyresize(col, row);
2347 int xfd = XConnectionNumber(xw.dpy);
2351 FD_SET(cmdfd, &rfd);
2353 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) < 0) {
2356 die("select failed: %s\n", SERRNO);
2358 if(FD_ISSET(cmdfd, &rfd))
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);
2374 main(int argc, char *argv[]) {
2375 int i, bitm, xr, yr;
2376 unsigned int wr, hr;
2378 xw.fw = xw.fh = xw.fx = xw.fy = 0;
2381 for(i = 1; i < argc; i++) {
2382 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
2384 if(++i < argc) opt_title = argv[i];
2387 if(++i < argc) opt_class = argv[i];
2390 if(++i < argc) opt_embed = argv[i];
2393 if(++i < argc) opt_io = argv[i];
2396 /* eat every remaining arguments */
2397 if(++i < argc) opt_cmd = &argv[i];
2403 bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
2408 if(bitm & WidthValue)
2410 if(bitm & HeightValue)
2412 if(bitm & XNegative && xw.fx == 0)
2414 if(bitm & XNegative && xw.fy == 0)
2417 if(xw.fh != 0 && xw.fw != 0)
2427 setlocale(LC_CTYPE, "");