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 SELECT_TIMEOUT (20*1000) /* 20 ms */
57 #define DRAW_TIMEOUT (20*1000) /* 20 ms */
58 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
60 #define SERRNO strerror(errno)
61 #define MIN(a, b) ((a) < (b) ? (a) : (b))
62 #define MAX(a, b) ((a) < (b) ? (b) : (a))
63 #define LEN(a) (sizeof(a) / sizeof(a[0]))
64 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
65 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
66 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
67 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
68 #define IS_SET(flag) (term.mode & (flag))
69 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
70 #define X2COL(x) (((x) - BORDER)/xw.cw)
71 #define Y2ROW(y) (((y) - BORDER)/xw.ch)
73 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 */
206 struct timeval lastdraw;
216 /* TODO: use better name for vars... */
221 struct {int x, y;} b, e;
225 struct timeval tclick1;
226 struct timeval tclick2;
231 /* Drawing Context */
233 ulong col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
244 static void die(const char*, ...);
245 static void draw(void);
246 static void redraw(void);
247 static void drawregion(int, int, int, int);
248 static void execsh(void);
249 static void sigchld(int);
250 static void run(void);
251 static bool last_draw_too_old(void);
253 static void csidump(void);
254 static void csihandle(void);
255 static void csiparse(void);
256 static void csireset(void);
257 static void strdump(void);
258 static void strhandle(void);
259 static void strparse(void);
260 static void strreset(void);
262 static void tclearregion(int, int, int, int);
263 static void tcursor(int);
264 static void tdeletechar(int);
265 static void tdeleteline(int);
266 static void tinsertblank(int);
267 static void tinsertblankline(int);
268 static void tmoveto(int, int);
269 static void tnew(int, int);
270 static void tnewline(int);
271 static void tputtab(bool);
272 static void tputc(char*);
273 static void treset(void);
274 static int tresize(int, int);
275 static void tscrollup(int, int);
276 static void tscrolldown(int, int);
277 static void tsetattr(int*, int);
278 static void tsetchar(char*);
279 static void tsetscroll(int, int);
280 static void tswapscreen(void);
281 static void tsetdirt(int, int);
282 static void tsetmode(bool, bool, int *, int);
283 static void tfulldirt(void);
285 static void ttynew(void);
286 static void ttyread(void);
287 static void ttyresize(int, int);
288 static void ttywrite(const char *, size_t);
290 static void xdraws(char *, Glyph, int, int, int, int);
291 static void xhints(void);
292 static void xclear(int, int, int, int);
294 static void xdrawcursor(void);
295 static void xinit(void);
296 static void xloadcols(void);
297 static void xseturgency(int);
298 static void xsetsel(char*);
299 static void xresize(int, int);
301 static void expose(XEvent *);
302 static void visibility(XEvent *);
303 static void unmap(XEvent *);
304 static char* kmap(KeySym, uint);
305 static void kpress(XEvent *);
306 static void cmessage(XEvent *);
307 static void resize(XEvent *);
308 static void focus(XEvent *);
309 static void brelease(XEvent *);
310 static void bpress(XEvent *);
311 static void bmotion(XEvent *);
312 static void selnotify(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();
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 (*handler[LASTEvent])(XEvent *) = {
328 [ClientMessage] = cmessage,
329 [ConfigureNotify] = resize,
330 [VisibilityNotify] = visibility,
331 [UnmapNotify] = unmap,
335 [MotionNotify] = bmotion,
336 [ButtonPress] = bpress,
337 [ButtonRelease] = brelease,
338 [SelectionNotify] = selnotify,
339 [SelectionRequest] = selrequest,
346 static CSIEscape csiescseq;
347 static STREscape strescseq;
350 static Selection sel;
352 static char **opt_cmd = NULL;
353 static char *opt_io = NULL;
354 static char *opt_title = NULL;
355 static char *opt_embed = NULL;
356 static char *opt_class = NULL;
359 utf8decode(char *s, long *u) {
365 if(~c & B7) { /* 0xxxxxxx */
368 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
369 *u = c&(B4|B3|B2|B1|B0);
371 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
372 *u = c&(B3|B2|B1|B0);
374 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
379 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
381 if((c & (B7|B6)) != B7) /* 10xxxxxx */
384 *u |= c & (B5|B4|B3|B2|B1|B0);
386 if((n == 1 && *u < 0x80) ||
387 (n == 2 && *u < 0x800) ||
388 (n == 3 && *u < 0x10000) ||
389 (*u >= 0xD800 && *u <= 0xDFFF))
398 utf8encode(long *u, char *s) {
406 *sp = uc; /* 0xxxxxxx */
408 } else if(*u < 0x800) {
409 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
411 } else if(uc < 0x10000) {
412 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
414 } else if(uc <= 0x10FFFF) {
415 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
420 for(i=n,++sp; i>0; --i,++sp)
421 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
431 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
432 UTF-8 otherwise return 0 */
434 isfullutf8(char *s, int b) {
442 else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1)
444 else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
446 ((b == 2) && (*c2&(B7|B6)) == B7)))
448 else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
450 ((b == 2) && (*c2&(B7|B6)) == B7) ||
451 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7)))
463 else if((c&(B7|B6|B5)) == (B7|B6))
465 else if((c&(B7|B6|B5|B4)) == (B7|B6|B5))
473 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
474 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
478 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
479 if(sel.xtarget == None)
480 sel.xtarget = XA_STRING;
484 selected(int x, int y) {
485 if(sel.ey == y && sel.by == y) {
486 int bx = MIN(sel.bx, sel.ex);
487 int ex = MAX(sel.bx, sel.ex);
488 return BETWEEN(x, bx, ex);
490 return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
491 || (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
495 getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
497 *b = e->xbutton.button;
499 *x = X2COL(e->xbutton.x);
500 *y = Y2ROW(e->xbutton.y);
501 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
502 sel.b.y = MIN(sel.by, sel.ey);
503 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
504 sel.e.y = MAX(sel.by, sel.ey);
508 mousereport(XEvent *e) {
509 int x = X2COL(e->xbutton.x);
510 int y = Y2ROW(e->xbutton.y);
511 int button = e->xbutton.button;
512 int state = e->xbutton.state;
513 char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
514 static int ob, ox, oy;
517 if(e->xbutton.type == MotionNotify) {
518 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
522 } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
528 if(e->xbutton.type == ButtonPress) {
534 buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
535 + (state & Mod4Mask ? 8 : 0)
536 + (state & ControlMask ? 16 : 0);
538 ttywrite(buf, sizeof(buf));
543 if(IS_SET(MODE_MOUSE))
545 else if(e->xbutton.button == Button1) {
547 tsetdirt(sel.b.y, sel.e.y);
549 sel.ex = sel.bx = X2COL(e->xbutton.x);
550 sel.ey = sel.by = Y2ROW(e->xbutton.y);
557 int x, y, bufsize, is_selected = 0;
563 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
564 ptr = str = malloc(bufsize);
566 /* append every set & selected glyph to the selection */
567 for(y = 0; y < term.row; y++) {
568 for(x = 0; x < term.col; x++) {
569 is_selected = selected(x, y);
570 if((term.line[y][x].state & GLYPH_SET) && is_selected) {
571 int size = utf8size(term.line[y][x].c);
572 memcpy(ptr, term.line[y][x].c, size);
577 /* \n at the end of every selected line except for the last one */
578 if(is_selected && y < sel.e.y)
583 sel.alt = IS_SET(MODE_ALTSCREEN);
588 selnotify(XEvent *e) {
589 ulong nitems, ofs, rem;
596 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
597 False, AnyPropertyType, &type, &format,
598 &nitems, &rem, &data)) {
599 fprintf(stderr, "Clipboard allocation failed\n");
602 ttywrite((const char *) data, nitems * format / 8);
604 /* number of 32-bit chunks returned */
605 ofs += nitems * format / 32;
611 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY, xw.win, CurrentTime);
615 selrequest(XEvent *e) {
616 XSelectionRequestEvent *xsre;
620 xsre = (XSelectionRequestEvent *) e;
621 xev.type = SelectionNotify;
622 xev.requestor = xsre->requestor;
623 xev.selection = xsre->selection;
624 xev.target = xsre->target;
625 xev.time = xsre->time;
629 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
630 if(xsre->target == xa_targets) {
631 /* respond with the supported type */
632 Atom string = sel.xtarget;
633 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
634 XA_ATOM, 32, PropModeReplace,
635 (uchar *) &string, 1);
636 xev.property = xsre->property;
637 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
638 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
639 xsre->target, 8, PropModeReplace,
640 (uchar *) sel.clip, strlen(sel.clip));
641 xev.property = xsre->property;
644 /* all done, send a notification to the listener */
645 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
646 fprintf(stderr, "Error sending SelectionNotify event\n");
651 /* register the selection for both the clipboard and the primary */
657 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
659 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
660 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
666 brelease(XEvent *e) {
667 if(IS_SET(MODE_MOUSE)) {
671 if(e->xbutton.button == Button2)
673 else if(e->xbutton.button == Button1) {
675 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
676 term.dirty[sel.ey] = 1;
677 if(sel.bx == sel.ex && sel.by == sel.ey) {
680 gettimeofday(&now, NULL);
682 if(TIMEDIFF(now, sel.tclick2) <= TRIPLECLICK_TIMEOUT) {
683 /* triple click on the line */
684 sel.b.x = sel.bx = 0;
685 sel.e.x = sel.ex = term.col;
686 sel.b.y = sel.e.y = sel.ey;
688 } else if(TIMEDIFF(now, sel.tclick1) <= DOUBLECLICK_TIMEOUT) {
689 /* double click to select word */
691 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
692 term.line[sel.ey][sel.bx-1].c[0] != ' ') sel.bx--;
694 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
695 term.line[sel.ey][sel.ex+1].c[0] != ' ') sel.ex++;
697 sel.b.y = sel.e.y = sel.ey;
703 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
704 gettimeofday(&sel.tclick1, NULL);
710 if(IS_SET(MODE_MOUSE)) {
715 int oldey = sel.ey, oldex = sel.ex;
716 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
718 if(oldey != sel.ey || oldex != sel.ex) {
719 int starty = MIN(oldey, sel.ey);
720 int endy = MAX(oldey, sel.ey);
721 tsetdirt(starty, endy);
728 die(const char *errstr, ...) {
731 va_start(ap, errstr);
732 vfprintf(stderr, errstr, ap);
740 char *envshell = getenv("SHELL");
742 DEFAULT(envshell, SHELL);
743 putenv("TERM="TNAME);
744 args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};
745 execvp(args[0], args);
752 if(waitpid(pid, &stat, 0) < 0)
753 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
755 exit(WEXITSTATUS(stat));
764 /* seems to work fine on linux, openbsd and freebsd */
765 struct winsize w = {term.row, term.col, 0, 0};
766 if(openpty(&m, &s, NULL, NULL, &w) < 0)
767 die("openpty failed: %s\n", SERRNO);
769 switch(pid = fork()) {
771 die("fork failed\n");
774 setsid(); /* create a new process group */
775 dup2(s, STDIN_FILENO);
776 dup2(s, STDOUT_FILENO);
777 dup2(s, STDERR_FILENO);
778 if(ioctl(s, TIOCSCTTY, NULL) < 0)
779 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
787 signal(SIGCHLD, sigchld);
788 if(opt_io && !(fileio = fopen(opt_io, "w"))) {
789 fprintf(stderr, "Error opening %s:%s\n",
790 opt_io, strerror(errno));
798 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
800 fprintf(stderr, "\n");
805 static char buf[BUFSIZ];
806 static int buflen = 0;
809 int charsize; /* size of utf8 char in bytes */
813 /* append read bytes to unprocessed bytes */
814 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
815 die("Couldn't read from shell: %s\n", SERRNO);
817 /* process every complete utf8 char */
820 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
821 charsize = utf8decode(ptr, &utf8c);
822 utf8encode(&utf8c, s);
828 /* keep any uncomplete utf8 char for the next call */
829 memmove(buf, ptr, buflen);
833 ttywrite(const char *s, size_t n) {
834 if(write(cmdfd, s, n) == -1)
835 die("write error on tty: %s\n", SERRNO);
839 ttyresize(int x, int y) {
844 w.ws_xpixel = w.ws_ypixel = 0;
845 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
846 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
850 tsetdirt(int top, int bot)
854 LIMIT(top, 0, term.row-1);
855 LIMIT(bot, 0, term.row-1);
857 for(i = top; i <= bot; i++)
864 tsetdirt(0, term.row-1);
871 if(mode == CURSOR_SAVE)
873 else if(mode == CURSOR_LOAD)
874 term.c = c, tmoveto(c.x, c.y);
884 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
886 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
887 for(i = TAB; i < term.col; i += TAB)
889 term.top = 0, term.bot = term.row - 1;
890 term.mode = MODE_WRAP;
891 tclearregion(0, 0, term.col-1, term.row-1);
895 tnew(int col, int row) {
896 /* set screen size */
897 term.row = row, term.col = col;
898 term.line = malloc(term.row * sizeof(Line));
899 term.alt = malloc(term.row * sizeof(Line));
900 term.dirty = malloc(term.row * sizeof(*term.dirty));
901 term.tabs = malloc(term.col * sizeof(*term.tabs));
903 for(row = 0; row < term.row; row++) {
904 term.line[row] = malloc(term.col * sizeof(Glyph));
905 term.alt [row] = malloc(term.col * sizeof(Glyph));
908 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
915 Line* tmp = term.line;
916 term.line = term.alt;
918 term.mode ^= MODE_ALTSCREEN;
923 tscrolldown(int orig, int n) {
927 LIMIT(n, 0, term.bot-orig+1);
929 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
931 for(i = term.bot; i >= orig+n; i--) {
933 term.line[i] = term.line[i-n];
934 term.line[i-n] = temp;
944 tscrollup(int orig, int n) {
947 LIMIT(n, 0, term.bot-orig+1);
949 tclearregion(0, orig, term.col-1, orig+n-1);
951 for(i = orig; i <= term.bot-n; i++) {
953 term.line[i] = term.line[i+n];
954 term.line[i+n] = temp;
964 selscroll(int orig, int n) {
968 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
969 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
973 if(sel.by < term.top) {
977 if(sel.ey > term.bot) {
981 sel.b.y = sel.by, sel.b.x = sel.bx;
982 sel.e.y = sel.ey, sel.e.x = sel.ex;
987 tnewline(int first_col) {
990 tscrollup(term.top, 1);
993 tmoveto(first_col ? 0 : term.c.x, y);
999 char *p = csiescseq.buf;
1003 csiescseq.priv = 1, p++;
1005 while(p < csiescseq.buf+csiescseq.len) {
1006 while(isdigit(*p)) {
1007 csiescseq.arg[csiescseq.narg] *= 10;
1008 csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
1010 if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ)
1011 csiescseq.narg++, p++;
1013 csiescseq.mode = *p;
1021 tmoveto(int x, int y) {
1022 LIMIT(x, 0, term.col-1);
1023 LIMIT(y, 0, term.row-1);
1024 term.c.state &= ~CURSOR_WRAPNEXT;
1031 term.dirty[term.c.y] = 1;
1032 term.line[term.c.y][term.c.x] = term.c.attr;
1033 memcpy(term.line[term.c.y][term.c.x].c, c, UTF_SIZ);
1034 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
1038 tclearregion(int x1, int y1, int x2, int y2) {
1042 temp = x1, x1 = x2, x2 = temp;
1044 temp = y1, y1 = y2, y2 = temp;
1046 LIMIT(x1, 0, term.col-1);
1047 LIMIT(x2, 0, term.col-1);
1048 LIMIT(y1, 0, term.row-1);
1049 LIMIT(y2, 0, term.row-1);
1051 for(y = y1; y <= y2; y++) {
1053 for(x = x1; x <= x2; x++)
1054 term.line[y][x].state = 0;
1059 tdeletechar(int n) {
1060 int src = term.c.x + n;
1062 int size = term.col - src;
1064 term.dirty[term.c.y] = 1;
1066 if(src >= term.col) {
1067 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1070 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
1071 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1075 tinsertblank(int n) {
1078 int size = term.col - dst;
1080 term.dirty[term.c.y] = 1;
1082 if(dst >= term.col) {
1083 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1086 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
1087 tclearregion(src, term.c.y, dst - 1, term.c.y);
1091 tinsertblankline(int n) {
1092 if(term.c.y < term.top || term.c.y > term.bot)
1095 tscrolldown(term.c.y, n);
1099 tdeleteline(int n) {
1100 if(term.c.y < term.top || term.c.y > term.bot)
1103 tscrollup(term.c.y, n);
1107 tsetattr(int *attr, int l) {
1110 for(i = 0; i < l; i++) {
1113 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);
1114 term.c.attr.fg = DefaultFG;
1115 term.c.attr.bg = DefaultBG;
1118 term.c.attr.mode |= ATTR_BOLD;
1120 case 3: /* enter standout (highlight) mode TODO: make it italic */
1121 term.c.attr.mode |= ATTR_REVERSE;
1124 term.c.attr.mode |= ATTR_UNDERLINE;
1127 term.c.attr.mode |= ATTR_REVERSE;
1130 term.c.attr.mode &= ~ATTR_BOLD;
1132 case 23: /* leave standout (highlight) mode TODO: make it italic */
1133 term.c.attr.mode &= ~ATTR_REVERSE;
1136 term.c.attr.mode &= ~ATTR_UNDERLINE;
1139 term.c.attr.mode &= ~ATTR_REVERSE;
1142 if(i + 2 < l && attr[i + 1] == 5) {
1144 if(BETWEEN(attr[i], 0, 255))
1145 term.c.attr.fg = attr[i];
1147 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
1150 fprintf(stderr, "erresc(38): gfx attr %d unknown\n", attr[i]);
1153 term.c.attr.fg = DefaultFG;
1156 if(i + 2 < l && attr[i + 1] == 5) {
1158 if(BETWEEN(attr[i], 0, 255))
1159 term.c.attr.bg = attr[i];
1161 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
1164 fprintf(stderr, "erresc(48): gfx attr %d unknown\n", attr[i]);
1167 term.c.attr.bg = DefaultBG;
1170 if(BETWEEN(attr[i], 30, 37))
1171 term.c.attr.fg = attr[i] - 30;
1172 else if(BETWEEN(attr[i], 40, 47))
1173 term.c.attr.bg = attr[i] - 40;
1174 else if(BETWEEN(attr[i], 90, 97))
1175 term.c.attr.fg = attr[i] - 90 + 8;
1176 else if(BETWEEN(attr[i], 100, 107))
1177 term.c.attr.fg = attr[i] - 100 + 8;
1179 fprintf(stderr, "erresc(default): gfx attr %d unknown\n", attr[i]), csidump();
1186 tsetscroll(int t, int b) {
1189 LIMIT(t, 0, term.row-1);
1190 LIMIT(b, 0, term.row-1);
1200 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1203 tsetmode(bool priv, bool set, int *args, int narg) {
1206 for(lim = args + narg; args < lim; ++args) {
1210 MODBIT(term.mode, set, MODE_APPKEYPAD);
1212 case 5: /* DECSCNM -- Reverve video */
1214 MODBIT(term.mode,set, MODE_REVERSE);
1215 if(mode != term.mode)
1219 MODBIT(term.mode, set, MODE_WRAP);
1222 MODBIT(term.mode, set, MODE_CRLF);
1224 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1227 MODBIT(term.c.state, !set, CURSOR_HIDE);
1229 case 1000: /* 1000,1002: enable xterm mouse report */
1230 MODBIT(term.mode, set, MODE_MOUSEBTN);
1233 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1235 case 1049: /* = 1047 and 1048 */
1238 if(IS_SET(MODE_ALTSCREEN))
1239 tclearregion(0, 0, term.col-1, term.row-1);
1240 if((set && !IS_SET(MODE_ALTSCREEN)) ||
1241 (!set && IS_SET(MODE_ALTSCREEN))) {
1248 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1252 "erresc: unknown private set/reset mode %d\n",
1259 MODBIT(term.mode, set, MODE_INSERT);
1263 "erresc: unknown set/reset mode %d\n",
1275 switch(csiescseq.mode) {
1278 fprintf(stderr, "erresc: unknown csi ");
1282 case '@': /* ICH -- Insert <n> blank char */
1283 DEFAULT(csiescseq.arg[0], 1);
1284 tinsertblank(csiescseq.arg[0]);
1286 case 'A': /* CUU -- Cursor <n> Up */
1288 DEFAULT(csiescseq.arg[0], 1);
1289 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1291 case 'B': /* CUD -- Cursor <n> Down */
1292 DEFAULT(csiescseq.arg[0], 1);
1293 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1295 case 'C': /* CUF -- Cursor <n> Forward */
1297 DEFAULT(csiescseq.arg[0], 1);
1298 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1300 case 'D': /* CUB -- Cursor <n> Backward */
1301 DEFAULT(csiescseq.arg[0], 1);
1302 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1304 case 'E': /* CNL -- Cursor <n> Down and first col */
1305 DEFAULT(csiescseq.arg[0], 1);
1306 tmoveto(0, term.c.y+csiescseq.arg[0]);
1308 case 'F': /* CPL -- Cursor <n> Up and first col */
1309 DEFAULT(csiescseq.arg[0], 1);
1310 tmoveto(0, term.c.y-csiescseq.arg[0]);
1312 case 'g': /* TBC -- Tabulation clear */
1313 switch (csiescseq.arg[0]) {
1314 case 0: /* clear current tab stop */
1315 term.tabs[term.c.x] = 0;
1317 case 3: /* clear all the tabs */
1318 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1324 case 'G': /* CHA -- Move to <col> */
1325 case '`': /* XXX: HPA -- same? */
1326 DEFAULT(csiescseq.arg[0], 1);
1327 tmoveto(csiescseq.arg[0]-1, term.c.y);
1329 case 'H': /* CUP -- Move to <row> <col> */
1330 case 'f': /* XXX: HVP -- same? */
1331 DEFAULT(csiescseq.arg[0], 1);
1332 DEFAULT(csiescseq.arg[1], 1);
1333 tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1335 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1336 DEFAULT(csiescseq.arg[0], 1);
1337 while(csiescseq.arg[0]--)
1340 case 'J': /* ED -- Clear screen */
1342 switch(csiescseq.arg[0]) {
1344 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1345 if(term.c.y < term.row-1)
1346 tclearregion(0, term.c.y+1, term.col-1, term.row-1);
1350 tclearregion(0, 0, term.col-1, term.c.y-1);
1351 tclearregion(0, term.c.y, term.c.x, term.c.y);
1354 tclearregion(0, 0, term.col-1, term.row-1);
1360 case 'K': /* EL -- Clear line */
1361 switch(csiescseq.arg[0]) {
1363 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1366 tclearregion(0, term.c.y, term.c.x, term.c.y);
1369 tclearregion(0, term.c.y, term.col-1, term.c.y);
1373 case 'S': /* SU -- Scroll <n> line up */
1374 DEFAULT(csiescseq.arg[0], 1);
1375 tscrollup(term.top, csiescseq.arg[0]);
1377 case 'T': /* SD -- Scroll <n> line down */
1378 DEFAULT(csiescseq.arg[0], 1);
1379 tscrolldown(term.top, csiescseq.arg[0]);
1381 case 'L': /* IL -- Insert <n> blank lines */
1382 DEFAULT(csiescseq.arg[0], 1);
1383 tinsertblankline(csiescseq.arg[0]);
1385 case 'l': /* RM -- Reset Mode */
1386 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1388 case 'M': /* DL -- Delete <n> lines */
1389 DEFAULT(csiescseq.arg[0], 1);
1390 tdeleteline(csiescseq.arg[0]);
1392 case 'X': /* ECH -- Erase <n> char */
1393 DEFAULT(csiescseq.arg[0], 1);
1394 tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
1396 case 'P': /* DCH -- Delete <n> char */
1397 DEFAULT(csiescseq.arg[0], 1);
1398 tdeletechar(csiescseq.arg[0]);
1400 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1401 DEFAULT(csiescseq.arg[0], 1);
1402 while(csiescseq.arg[0]--)
1405 case 'd': /* VPA -- Move to <row> */
1406 DEFAULT(csiescseq.arg[0], 1);
1407 tmoveto(term.c.x, csiescseq.arg[0]-1);
1409 case 'h': /* SM -- Set terminal mode */
1410 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1412 case 'm': /* SGR -- Terminal attribute (color) */
1413 tsetattr(csiescseq.arg, csiescseq.narg);
1415 case 'r': /* DECSTBM -- Set Scrolling Region */
1419 DEFAULT(csiescseq.arg[0], 1);
1420 DEFAULT(csiescseq.arg[1], term.row);
1421 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1425 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1426 tcursor(CURSOR_SAVE);
1428 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1429 tcursor(CURSOR_LOAD);
1438 for(i = 0; i < csiescseq.len; i++) {
1439 uint c = csiescseq.buf[i] & 0xff;
1440 if(isprint(c)) putchar(c);
1441 else if(c == '\n') printf("(\\n)");
1442 else if(c == '\r') printf("(\\r)");
1443 else if(c == 0x1b) printf("(\\e)");
1444 else printf("(%02x)", c);
1451 memset(&csiescseq, 0, sizeof(csiescseq));
1459 * TODO: make this being useful in case of color palette change.
1465 switch(strescseq.type) {
1466 case ']': /* OSC -- Operating System Command */
1472 * TODO: Handle special chars in string, like umlauts.
1475 XStoreName(xw.dpy, xw.win, strescseq.buf+2);
1479 XStoreName(xw.dpy, xw.win, strescseq.buf+1);
1481 case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
1484 fprintf(stderr, "erresc: unknown str ");
1489 case 'P': /* DSC -- Device Control String */
1490 case '_': /* APC -- Application Program Command */
1491 case '^': /* PM -- Privacy Message */
1493 fprintf(stderr, "erresc: unknown str ");
1503 * TODO: Implement parsing like for CSI when required.
1504 * Format: ESC type cmd ';' arg0 [';' argn] ESC \
1512 printf("ESC%c", strescseq.type);
1513 for(i = 0; i < strescseq.len; i++) {
1514 uint c = strescseq.buf[i] & 0xff;
1515 if(isprint(c)) putchar(c);
1516 else if(c == '\n') printf("(\\n)");
1517 else if(c == '\r') printf("(\\r)");
1518 else if(c == 0x1b) printf("(\\e)");
1519 else printf("(%02x)", c);
1526 memset(&strescseq, 0, sizeof(strescseq));
1530 tputtab(bool forward) {
1531 unsigned x = term.c.x;
1536 for(++x; x < term.col && !term.tabs[x]; ++x)
1541 for(--x; x > 0 && !term.tabs[x]; --x)
1544 tmoveto(x, term.c.y);
1552 putc(ascii, fileio);
1554 if(term.esc & ESC_START) {
1555 if(term.esc & ESC_CSI) {
1556 csiescseq.buf[csiescseq.len++] = ascii;
1557 if(BETWEEN(ascii, 0x40, 0x7E) || csiescseq.len >= ESC_BUF_SIZ) {
1559 csiparse(), csihandle();
1561 } else if(term.esc & ESC_STR) {
1564 term.esc = ESC_START | ESC_STR_END;
1566 case '\a': /* backwards compatibility to xterm */
1571 strescseq.buf[strescseq.len++] = ascii;
1572 if(strescseq.len+1 >= STR_BUF_SIZ) {
1577 } else if(term.esc & ESC_STR_END) {
1581 } else if(term.esc & ESC_ALTCHARSET) {
1583 case '0': /* Line drawing crap */
1584 term.c.attr.mode |= ATTR_GFX;
1586 case 'B': /* Back to regular text */
1587 term.c.attr.mode &= ~ATTR_GFX;
1590 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
1596 term.esc |= ESC_CSI;
1598 case 'P': /* DCS -- Device Control String */
1599 case '_': /* APC -- Application Program Command */
1600 case '^': /* PM -- Privacy Message */
1601 case ']': /* OSC -- Operating System Command */
1603 strescseq.type = ascii;
1604 term.esc |= ESC_STR;
1607 term.esc |= ESC_ALTCHARSET;
1609 case 'D': /* IND -- Linefeed */
1610 if(term.c.y == term.bot)
1611 tscrollup(term.top, 1);
1613 tmoveto(term.c.x, term.c.y+1);
1616 case 'E': /* NEL -- Next line */
1617 tnewline(1); /* always go to first col */
1620 case 'H': /* HTS -- Horizontal tab stop */
1621 term.tabs[term.c.x] = 1;
1624 case 'M': /* RI -- Reverse index */
1625 if(term.c.y == term.top)
1626 tscrolldown(term.top, 1);
1628 tmoveto(term.c.x, term.c.y-1);
1631 case 'c': /* RIS -- Reset to inital state */
1635 case '=': /* DECPAM -- Application keypad */
1636 term.mode |= MODE_APPKEYPAD;
1639 case '>': /* DECPNM -- Normal keypad */
1640 term.mode &= ~MODE_APPKEYPAD;
1643 case '7': /* DECSC -- Save Cursor */
1644 tcursor(CURSOR_SAVE);
1647 case '8': /* DECRC -- Restore Cursor */
1648 tcursor(CURSOR_LOAD);
1651 case '\\': /* ST -- Stop */
1655 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
1656 (uchar) ascii, isprint(ascii)?ascii:'.');
1661 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
1668 tmoveto(term.c.x-1, term.c.y);
1671 tmoveto(0, term.c.y);
1676 /* go to first col if the mode is set */
1677 tnewline(IS_SET(MODE_CRLF));
1680 if(!(xw.state & WIN_FOCUSED))
1685 term.esc = ESC_START;
1688 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
1689 tnewline(1); /* always go to first col */
1691 if(term.c.x+1 < term.col)
1692 tmoveto(term.c.x+1, term.c.y);
1694 term.c.state |= CURSOR_WRAPNEXT;
1700 tresize(int col, int row) {
1702 int minrow = MIN(row, term.row);
1703 int mincol = MIN(col, term.col);
1704 int slide = term.c.y - row + 1;
1706 if(col < 1 || row < 1)
1709 /* free unneeded rows */
1712 /* slide screen to keep cursor where we expect it -
1713 * tscrollup would work here, but we can optimize to
1714 * memmove because we're freeing the earlier lines */
1715 for(/* i = 0 */; i < slide; i++) {
1719 memmove(term.line, term.line + slide, row * sizeof(Line));
1720 memmove(term.alt, term.alt + slide, row * sizeof(Line));
1722 for(i += row; i < term.row; i++) {
1727 /* resize to new height */
1728 term.line = realloc(term.line, row * sizeof(Line));
1729 term.alt = realloc(term.alt, row * sizeof(Line));
1730 term.dirty = realloc(term.dirty, row * sizeof(*term.dirty));
1731 term.tabs = realloc(term.tabs, col * sizeof(*term.tabs));
1733 /* resize each row to new width, zero-pad if needed */
1734 for(i = 0; i < minrow; i++) {
1736 term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
1737 term.alt[i] = realloc(term.alt[i], col * sizeof(Glyph));
1738 for(x = mincol; x < col; x++) {
1739 term.line[i][x].state = 0;
1740 term.alt[i][x].state = 0;
1744 /* allocate any new rows */
1745 for(/* i == minrow */; i < row; i++) {
1747 term.line[i] = calloc(col, sizeof(Glyph));
1748 term.alt [i] = calloc(col, sizeof(Glyph));
1750 if(col > term.col) {
1751 bool *bp = term.tabs + term.col;
1753 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
1754 while(--bp > term.tabs && !*bp)
1756 for(bp += TAB; bp < term.tabs + col; bp += TAB)
1759 /* update terminal size */
1760 term.col = col, term.row = row;
1761 /* make use of the LIMIT in tmoveto */
1762 tmoveto(term.c.x, term.c.y);
1763 /* reset scrolling region */
1764 tsetscroll(0, row-1);
1770 xresize(int col, int row) {
1771 xw.w = MAX(1, 2*BORDER + col * xw.cw);
1772 xw.h = MAX(1, 2*BORDER + row * xw.ch);
1779 ulong white = WhitePixel(xw.dpy, xw.scr);
1781 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
1782 for(i = 0; i < LEN(colorname); i++) {
1785 if(!XAllocNamedColor(xw.dpy, xw.cmap, colorname[i], &color, &color)) {
1787 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1789 dc.col[i] = color.pixel;
1792 /* load colors [16-255] ; same colors as xterm */
1793 for(i = 16, r = 0; r < 6; r++)
1794 for(g = 0; g < 6; g++)
1795 for(b = 0; b < 6; b++) {
1796 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1797 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1798 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1799 if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
1801 fprintf(stderr, "Could not allocate color %d\n", i);
1803 dc.col[i] = color.pixel;
1807 for(r = 0; r < 24; r++, i++) {
1808 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1809 if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
1811 fprintf(stderr, "Could not allocate color %d\n", i);
1813 dc.col[i] = color.pixel;
1818 xclear(int x1, int y1, int x2, int y2) {
1819 XSetForeground(xw.dpy, dc.gc, dc.col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG]);
1820 XFillRectangle(xw.dpy, xw.buf, dc.gc,
1821 BORDER + x1 * xw.cw, BORDER + y1 * xw.ch,
1822 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1827 XClassHint class = {opt_class ? opt_class : TNAME, TNAME};
1828 XWMHints wm = {.flags = InputHint, .input = 1};
1829 XSizeHints *sizeh = NULL;
1831 sizeh = XAllocSizeHints();
1832 if(xw.isfixed == False) {
1833 sizeh->flags = PSize | PResizeInc | PBaseSize;
1834 sizeh->height = xw.h;
1835 sizeh->width = xw.w;
1836 sizeh->height_inc = xw.ch;
1837 sizeh->width_inc = xw.cw;
1838 sizeh->base_height = 2*BORDER;
1839 sizeh->base_width = 2*BORDER;
1841 sizeh->flags = PMaxSize | PMinSize;
1842 sizeh->min_width = sizeh->max_width = xw.fw;
1843 sizeh->min_height = sizeh->max_height = xw.fh;
1846 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
1851 xinitfont(char *fontstr) {
1853 char *def, **missing;
1857 set = XCreateFontSet(xw.dpy, fontstr, &missing, &n, &def);
1860 fprintf(stderr, "st: missing fontset: %s\n", missing[n]);
1861 XFreeStringList(missing);
1867 xgetfontinfo(XFontSet set, int *ascent, int *descent, short *lbearing, short *rbearing) {
1868 XFontStruct **xfonts;
1872 *ascent = *descent = *lbearing = *rbearing = 0;
1873 n = XFontsOfFontSet(set, &xfonts, &font_names);
1874 for(i = 0; i < n; i++) {
1875 *ascent = MAX(*ascent, (*xfonts)->ascent);
1876 *descent = MAX(*descent, (*xfonts)->descent);
1877 *lbearing = MAX(*lbearing, (*xfonts)->min_bounds.lbearing);
1878 *rbearing = MAX(*rbearing, (*xfonts)->max_bounds.rbearing);
1884 initfonts(char *fontstr, char *bfontstr) {
1885 if((dc.font.set = xinitfont(fontstr)) == NULL ||
1886 (dc.bfont.set = xinitfont(bfontstr)) == NULL)
1887 die("Can't load font %s\n", dc.font.set ? BOLDFONT : FONT);
1888 xgetfontinfo(dc.font.set, &dc.font.ascent, &dc.font.descent,
1889 &dc.font.lbearing, &dc.font.rbearing);
1890 xgetfontinfo(dc.bfont.set, &dc.bfont.ascent, &dc.bfont.descent,
1891 &dc.bfont.lbearing, &dc.bfont.rbearing);
1896 XSetWindowAttributes attrs;
1901 if(!(xw.dpy = XOpenDisplay(NULL)))
1902 die("Can't open display\n");
1903 xw.scr = XDefaultScreen(xw.dpy);
1905 /* adjust fixed window geometry */
1907 sw = DisplayWidth(xw.dpy, xw.scr);
1908 sh = DisplayHeight(xw.dpy, xw.scr);
1910 xw.fx = sw + xw.fx - xw.fw - 1;
1912 xw.fy = sh + xw.fy - xw.fh - 1;
1914 /* window - default size */
1915 xw.h = 2*BORDER + term.row * xw.ch;
1916 xw.w = 2*BORDER + term.col * xw.cw;
1922 initfonts(FONT, BOLDFONT);
1924 /* XXX: Assuming same size for bold font */
1925 xw.cw = dc.font.rbearing - dc.font.lbearing;
1926 xw.ch = dc.font.ascent + dc.font.descent;
1929 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1932 attrs.background_pixel = dc.col[DefaultBG];
1933 attrs.border_pixel = dc.col[DefaultBG];
1934 attrs.bit_gravity = NorthWestGravity;
1935 attrs.event_mask = FocusChangeMask | KeyPressMask
1936 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1937 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask
1938 | EnterWindowMask | LeaveWindowMask;
1939 attrs.colormap = xw.cmap;
1941 parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
1942 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
1943 xw.fw, xw.fh, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1944 XDefaultVisual(xw.dpy, xw.scr),
1945 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
1948 xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
1952 xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
1953 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
1954 | XIMStatusNothing, XNClientWindow, xw.win,
1955 XNFocusWindow, xw.win, NULL);
1957 dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
1959 /* white cursor, black outline */
1960 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
1961 XDefineCursor(xw.dpy, xw.win, cursor);
1962 XRecolorCursor(xw.dpy, cursor,
1963 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
1964 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
1966 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1968 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
1969 XMapWindow(xw.dpy, xw.win);
1975 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
1976 int fg = base.fg, bg = base.bg, temp;
1977 int winx = BORDER+x*xw.cw, winy = BORDER+y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
1978 XFontSet fontset = dc.font.set;
1981 /* only switch default fg/bg if term is in RV mode */
1982 if(IS_SET(MODE_REVERSE)) {
1989 if(base.mode & ATTR_REVERSE)
1990 temp = fg, fg = bg, bg = temp;
1992 if(base.mode & ATTR_BOLD) {
1994 fontset = dc.bfont.set;
1997 XSetBackground(xw.dpy, dc.gc, dc.col[bg]);
1998 XSetForeground(xw.dpy, dc.gc, dc.col[fg]);
2000 if(base.mode & ATTR_GFX) {
2001 for(i = 0; i < bytelen; i++) {
2002 char c = gfx[(uint)s[i] % 256];
2005 else if(s[i] > 0x5f)
2010 XmbDrawImageString(xw.dpy, xw.buf, fontset, dc.gc, winx, winy, s, bytelen);
2012 if(base.mode & ATTR_UNDERLINE)
2013 XDrawLine(xw.dpy, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
2016 /* copy buffer pixmap to screen pixmap */
2019 XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
2020 XdbeSwapBuffers(xw.dpy, swpinfo, 1);
2026 static int oldx = 0;
2027 static int oldy = 0;
2029 Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
2031 LIMIT(oldx, 0, term.col-1);
2032 LIMIT(oldy, 0, term.row-1);
2034 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2035 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2037 /* remove the old cursor */
2038 if(term.line[oldy][oldx].state & GLYPH_SET) {
2039 sl = utf8size(term.line[oldy][oldx].c);
2040 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1, sl);
2042 xclear(oldx, oldy, oldx, oldy);
2044 xcopy(oldx, oldy, 1, 1);
2046 /* draw the new one */
2047 if(!(term.c.state & CURSOR_HIDE)) {
2048 if(!(xw.state & WIN_FOCUSED))
2051 if(IS_SET(MODE_REVERSE))
2052 g.mode |= ATTR_REVERSE, g.fg = DefaultCS, g.bg = DefaultFG;
2055 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2056 oldx = term.c.x, oldy = term.c.y;
2059 xcopy(term.c.x, term.c.y, 1, 1);
2064 struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
2067 nanosleep(&tv, NULL);
2072 drawregion(0, 0, term.col, term.row);
2074 gettimeofday(&xw.lastdraw, NULL);
2078 drawregion(int x1, int y1, int x2, int y2) {
2079 int ic, ib, x, y, ox, sl;
2081 char buf[DRAW_BUF_SIZ];
2082 bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN);
2084 if((sel.alt && !alt) || (!sel.alt && alt))
2086 if(!(xw.state & WIN_VISIBLE))
2089 for(y = y1; y < y2; y++) {
2092 xclear(0, y, term.col, y);
2094 base = term.line[y][0];
2096 for(x = x1; x < x2; x++) {
2097 new = term.line[y][x];
2098 if(ena_sel && *(new.c) && selected(x, y))
2099 new.mode ^= ATTR_REVERSE;
2100 if(ib > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
2101 ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
2102 xdraws(buf, base, ox, y, ic, ib);
2105 if(new.state & GLYPH_SET) {
2110 sl = utf8size(new.c);
2111 memcpy(buf+ib, new.c, sl);
2117 xdraws(buf, base, ox, y, ic, ib);
2123 expose(XEvent *ev) {
2124 XExposeEvent *e = &ev->xexpose;
2125 if(xw.state & WIN_REDRAW) {
2127 xw.state &= ~WIN_REDRAW;
2133 visibility(XEvent *ev) {
2134 XVisibilityEvent *e = &ev->xvisibility;
2135 if(e->state == VisibilityFullyObscured)
2136 xw.state &= ~WIN_VISIBLE;
2137 else if(!(xw.state & WIN_VISIBLE))
2138 /* need a full redraw for next Expose, not just a buf copy */
2139 xw.state |= WIN_VISIBLE | WIN_REDRAW;
2144 xw.state &= ~WIN_VISIBLE;
2148 xseturgency(int add) {
2149 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
2150 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
2151 XSetWMHints(xw.dpy, xw.win, h);
2157 if(ev->type == FocusIn) {
2158 xw.state |= WIN_FOCUSED;
2161 xw.state &= ~WIN_FOCUSED;
2166 kmap(KeySym k, uint state) {
2169 for(i = 0; i < LEN(key); i++) {
2170 uint mask = key[i].mask;
2171 if(key[i].k == k && ((state & mask) == mask || (mask == XK_NO_MOD && !state)))
2172 return (char*)key[i].s;
2178 kpress(XEvent *ev) {
2179 XKeyEvent *e = &ev->xkey;
2188 meta = e->state & Mod1Mask;
2189 shift = e->state & ShiftMask;
2190 len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
2192 /* 1. custom keys from config.h */
2193 if((customkey = kmap(ksym, e->state)))
2194 ttywrite(customkey, strlen(customkey));
2195 /* 2. hardcoded (overrides X lookup) */
2202 /* XXX: shift up/down doesn't work */
2203 sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', (shift ? "dacb":"DACB")[ksym - XK_Left]);
2211 if(IS_SET(MODE_CRLF))
2212 ttywrite("\r\n", 2);
2219 if(meta && len == 1)
2220 ttywrite("\033", 1);
2228 cmessage(XEvent *e) {
2230 http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
2231 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
2232 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
2233 xw.state |= WIN_FOCUSED;
2235 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
2236 xw.state &= ~WIN_FOCUSED;
2246 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
2249 xw.w = e->xconfigure.width;
2250 xw.h = e->xconfigure.height;
2251 col = (xw.w - 2*BORDER) / xw.cw;
2252 row = (xw.h - 2*BORDER) / xw.ch;
2253 if(col == term.col && row == term.row)
2255 if(tresize(col, row))
2257 ttyresize(col, row);
2262 last_draw_too_old(void) {
2264 gettimeofday(&now, NULL);
2265 return TIMEDIFF(now, xw.lastdraw) >= DRAW_TIMEOUT/1000;
2272 int xfd = XConnectionNumber(xw.dpy);
2273 struct timeval timeout = {0};
2274 bool stuff_to_print = 0;
2278 FD_SET(cmdfd, &rfd);
2281 timeout.tv_usec = SELECT_TIMEOUT;
2282 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, &timeout) < 0) {
2285 die("select failed: %s\n", SERRNO);
2287 if(FD_ISSET(cmdfd, &rfd)) {
2292 if(stuff_to_print && last_draw_too_old()) {
2297 while(XPending(xw.dpy)) {
2298 XNextEvent(xw.dpy, &ev);
2299 if(XFilterEvent(&ev, xw.win))
2301 if(handler[ev.type])
2302 (handler[ev.type])(&ev);
2308 main(int argc, char *argv[]) {
2309 int i, bitm, xr, yr;
2310 unsigned int wr, hr;
2312 xw.fw = xw.fh = xw.fx = xw.fy = 0;
2314 for(i = 1; i < argc; i++) {
2315 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
2317 if(++i < argc) opt_title = argv[i];
2320 if(++i < argc) opt_class = argv[i];
2323 if(++i < argc) opt_embed = argv[i];
2326 if(++i < argc) opt_io = argv[i];
2329 /* eat every remaining arguments */
2330 if(++i < argc) opt_cmd = &argv[i];
2336 bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
2341 if(bitm & WidthValue)
2343 if(bitm & HeightValue)
2345 if(bitm & XNegative && xw.fx == 0)
2347 if(bitm & XNegative && xw.fy == 0)
2350 if(xw.fh != 0 && xw.fw != 0)
2360 setlocale(LC_CTYPE, "");