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 {
82 enum cursor_movement {
109 MODE_MOUSEMOTION = 64,
117 ESC_STR = 4, /* DSC, OSC, PM, APC */
119 ESC_STR_END = 16, /* a final string was encountered */
130 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
132 typedef unsigned char uchar;
133 typedef unsigned int uint;
134 typedef unsigned long ulong;
135 typedef unsigned short ushort;
138 char c[UTF_SIZ]; /* character code */
139 uchar mode; /* attribute flags */
140 ushort fg; /* foreground */
141 ushort bg; /* background */
142 uchar state; /* state flags */
148 Glyph attr; /* current char attributes */
154 /* CSI Escape sequence structs */
155 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
157 char buf[ESC_BUF_SIZ]; /* raw string */
158 int len; /* raw string length */
160 int arg[ESC_ARG_SIZ];
161 int narg; /* nb of args */
165 /* STR Escape sequence structs */
166 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
168 char type; /* ESC type ... */
169 char buf[STR_BUF_SIZ]; /* raw string */
170 int len; /* raw string length */
171 char *args[STR_ARG_SIZ];
172 int narg; /* nb of args */
175 /* Internal representation of the screen */
177 int row; /* nb row */
178 int col; /* nb col */
179 Line* line; /* screen */
180 Line* alt; /* alternate screen */
181 bool* dirty; /* dirtyness of lines */
182 TCursor c; /* cursor */
183 int top; /* top scroll limit */
184 int bot; /* bottom scroll limit */
185 int mode; /* terminal mode flags */
186 int esc; /* escape state flags */
190 /* Purely graphic info */
200 Bool isfixed; /* is fixed geometry? */
201 int fx, fy, fw, fh; /* fixed geometry */
202 int w; /* window width */
203 int h; /* window height */
204 int ch; /* char height */
205 int cw; /* char width */
206 char state; /* focus, redraw, visible */
207 struct timeval lastdraw;
217 /* TODO: use better name for vars... */
222 struct {int x, y;} b, e;
226 struct timeval tclick1;
227 struct timeval tclick2;
232 /* Drawing Context */
234 ulong col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
242 } font, bfont, ifont;
245 static void die(const char*, ...);
246 static void draw(void);
247 static void redraw(void);
248 static void drawregion(int, int, int, int);
249 static void execsh(void);
250 static void sigchld(int);
251 static void run(void);
252 static bool last_draw_too_old(void);
254 static void csidump(void);
255 static void csihandle(void);
256 static void csiparse(void);
257 static void csireset(void);
258 static void strdump(void);
259 static void strhandle(void);
260 static void strparse(void);
261 static void strreset(void);
263 static void tclearregion(int, int, int, int);
264 static void tcursor(int);
265 static void tdeletechar(int);
266 static void tdeleteline(int);
267 static void tinsertblank(int);
268 static void tinsertblankline(int);
269 static void tmoveto(int, int);
270 static void tnew(int, int);
271 static void tnewline(int);
272 static void tputtab(bool);
273 static void tputc(char*);
274 static void treset(void);
275 static int tresize(int, int);
276 static void tscrollup(int, int);
277 static void tscrolldown(int, int);
278 static void tsetattr(int*, int);
279 static void tsetchar(char*);
280 static void tsetscroll(int, int);
281 static void tswapscreen(void);
282 static void tsetdirt(int, int);
283 static void tsetmode(bool, bool, int *, int);
284 static void tfulldirt(void);
286 static void ttynew(void);
287 static void ttyread(void);
288 static void ttyresize(int, int);
289 static void ttywrite(const char *, size_t);
291 static void xdraws(char *, Glyph, int, int, int, int);
292 static void xhints(void);
293 static void xclear(int, int, int, int);
295 static void xdrawcursor(void);
296 static void xinit(void);
297 static void xloadcols(void);
298 static void xseturgency(int);
299 static void xsetsel(char*);
300 static void xresize(int, int);
302 static void expose(XEvent *);
303 static void visibility(XEvent *);
304 static void unmap(XEvent *);
305 static char* kmap(KeySym, uint);
306 static void kpress(XEvent *);
307 static void cmessage(XEvent *);
308 static void resize(XEvent *);
309 static void focus(XEvent *);
310 static void brelease(XEvent *);
311 static void bpress(XEvent *);
312 static void bmotion(XEvent *);
313 static void selnotify(XEvent *);
314 static void selrequest(XEvent *);
316 static void selinit(void);
317 static inline bool selected(int, int);
318 static void selcopy(void);
319 static void selpaste();
320 static void selscroll(int, int);
322 static int utf8decode(char *, long *);
323 static int utf8encode(long *, char *);
324 static int utf8size(char *);
325 static int isfullutf8(char *, int);
327 static void (*handler[LASTEvent])(XEvent *) = {
329 [ClientMessage] = cmessage,
330 [ConfigureNotify] = resize,
331 [VisibilityNotify] = visibility,
332 [UnmapNotify] = unmap,
336 [MotionNotify] = bmotion,
337 [ButtonPress] = bpress,
338 [ButtonRelease] = brelease,
339 [SelectionNotify] = selnotify,
340 [SelectionRequest] = selrequest,
347 static CSIEscape csiescseq;
348 static STREscape strescseq;
351 static Selection sel;
353 static char **opt_cmd = NULL;
354 static char *opt_io = NULL;
355 static char *opt_title = NULL;
356 static char *opt_embed = NULL;
357 static char *opt_class = NULL;
360 utf8decode(char *s, long *u) {
366 if(~c & B7) { /* 0xxxxxxx */
369 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
370 *u = c&(B4|B3|B2|B1|B0);
372 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
373 *u = c&(B3|B2|B1|B0);
375 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
380 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
382 if((c & (B7|B6)) != B7) /* 10xxxxxx */
385 *u |= c & (B5|B4|B3|B2|B1|B0);
387 if((n == 1 && *u < 0x80) ||
388 (n == 2 && *u < 0x800) ||
389 (n == 3 && *u < 0x10000) ||
390 (*u >= 0xD800 && *u <= 0xDFFF))
399 utf8encode(long *u, char *s) {
407 *sp = uc; /* 0xxxxxxx */
409 } else if(*u < 0x800) {
410 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
412 } else if(uc < 0x10000) {
413 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
415 } else if(uc <= 0x10FFFF) {
416 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
421 for(i=n,++sp; i>0; --i,++sp)
422 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
432 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
433 UTF-8 otherwise return 0 */
435 isfullutf8(char *s, int b) {
443 else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1)
445 else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
447 ((b == 2) && (*c2&(B7|B6)) == B7)))
449 else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
451 ((b == 2) && (*c2&(B7|B6)) == B7) ||
452 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7)))
464 else if((c&(B7|B6|B5)) == (B7|B6))
466 else if((c&(B7|B6|B5|B4)) == (B7|B6|B5))
474 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
475 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
479 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
480 if(sel.xtarget == None)
481 sel.xtarget = XA_STRING;
485 selected(int x, int y) {
486 if(sel.ey == y && sel.by == y) {
487 int bx = MIN(sel.bx, sel.ex);
488 int ex = MAX(sel.bx, sel.ex);
489 return BETWEEN(x, bx, ex);
491 return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
492 || (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
496 getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
498 *b = e->xbutton.button;
500 *x = X2COL(e->xbutton.x);
501 *y = Y2ROW(e->xbutton.y);
502 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
503 sel.b.y = MIN(sel.by, sel.ey);
504 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
505 sel.e.y = MAX(sel.by, sel.ey);
509 mousereport(XEvent *e) {
510 int x = X2COL(e->xbutton.x);
511 int y = Y2ROW(e->xbutton.y);
512 int button = e->xbutton.button;
513 int state = e->xbutton.state;
514 char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
515 static int ob, ox, oy;
518 if(e->xbutton.type == MotionNotify) {
519 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
523 } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
529 if(e->xbutton.type == ButtonPress) {
535 buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
536 + (state & Mod4Mask ? 8 : 0)
537 + (state & ControlMask ? 16 : 0);
539 ttywrite(buf, sizeof(buf));
544 if(IS_SET(MODE_MOUSE))
546 else if(e->xbutton.button == Button1) {
548 tsetdirt(sel.b.y, sel.e.y);
550 sel.ex = sel.bx = X2COL(e->xbutton.x);
551 sel.ey = sel.by = Y2ROW(e->xbutton.y);
558 int x, y, bufsize, is_selected = 0;
564 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
565 ptr = str = malloc(bufsize);
567 /* append every set & selected glyph to the selection */
568 for(y = 0; y < term.row; y++) {
569 for(x = 0; x < term.col; x++) {
570 is_selected = selected(x, y);
571 if((term.line[y][x].state & GLYPH_SET) && is_selected) {
572 int size = utf8size(term.line[y][x].c);
573 memcpy(ptr, term.line[y][x].c, size);
578 /* \n at the end of every selected line except for the last one */
579 if(is_selected && y < sel.e.y)
584 sel.alt = IS_SET(MODE_ALTSCREEN);
589 selnotify(XEvent *e) {
590 ulong nitems, ofs, rem;
597 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
598 False, AnyPropertyType, &type, &format,
599 &nitems, &rem, &data)) {
600 fprintf(stderr, "Clipboard allocation failed\n");
603 ttywrite((const char *) data, nitems * format / 8);
605 /* number of 32-bit chunks returned */
606 ofs += nitems * format / 32;
612 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY, xw.win, CurrentTime);
616 selrequest(XEvent *e) {
617 XSelectionRequestEvent *xsre;
621 xsre = (XSelectionRequestEvent *) e;
622 xev.type = SelectionNotify;
623 xev.requestor = xsre->requestor;
624 xev.selection = xsre->selection;
625 xev.target = xsre->target;
626 xev.time = xsre->time;
630 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
631 if(xsre->target == xa_targets) {
632 /* respond with the supported type */
633 Atom string = sel.xtarget;
634 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
635 XA_ATOM, 32, PropModeReplace,
636 (uchar *) &string, 1);
637 xev.property = xsre->property;
638 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
639 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
640 xsre->target, 8, PropModeReplace,
641 (uchar *) sel.clip, strlen(sel.clip));
642 xev.property = xsre->property;
645 /* all done, send a notification to the listener */
646 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
647 fprintf(stderr, "Error sending SelectionNotify event\n");
652 /* register the selection for both the clipboard and the primary */
658 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
660 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
661 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
667 brelease(XEvent *e) {
668 if(IS_SET(MODE_MOUSE)) {
672 if(e->xbutton.button == Button2)
674 else if(e->xbutton.button == Button1) {
676 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
677 term.dirty[sel.ey] = 1;
678 if(sel.bx == sel.ex && sel.by == sel.ey) {
681 gettimeofday(&now, NULL);
683 if(TIMEDIFF(now, sel.tclick2) <= TRIPLECLICK_TIMEOUT) {
684 /* triple click on the line */
685 sel.b.x = sel.bx = 0;
686 sel.e.x = sel.ex = term.col;
687 sel.b.y = sel.e.y = sel.ey;
689 } else if(TIMEDIFF(now, sel.tclick1) <= DOUBLECLICK_TIMEOUT) {
690 /* double click to select word */
692 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
693 term.line[sel.ey][sel.bx-1].c[0] != ' ') sel.bx--;
695 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
696 term.line[sel.ey][sel.ex+1].c[0] != ' ') sel.ex++;
698 sel.b.y = sel.e.y = sel.ey;
704 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
705 gettimeofday(&sel.tclick1, NULL);
711 if(IS_SET(MODE_MOUSE)) {
716 int oldey = sel.ey, oldex = sel.ex;
717 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
719 if(oldey != sel.ey || oldex != sel.ex) {
720 int starty = MIN(oldey, sel.ey);
721 int endy = MAX(oldey, sel.ey);
722 tsetdirt(starty, endy);
729 die(const char *errstr, ...) {
732 va_start(ap, errstr);
733 vfprintf(stderr, errstr, ap);
741 char *envshell = getenv("SHELL");
747 DEFAULT(envshell, SHELL);
748 putenv("TERM="TNAME);
749 args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};
750 execvp(args[0], args);
757 if(waitpid(pid, &stat, 0) < 0)
758 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
760 exit(WEXITSTATUS(stat));
769 /* seems to work fine on linux, openbsd and freebsd */
770 struct winsize w = {term.row, term.col, 0, 0};
771 if(openpty(&m, &s, NULL, NULL, &w) < 0)
772 die("openpty failed: %s\n", SERRNO);
774 switch(pid = fork()) {
776 die("fork failed\n");
779 setsid(); /* create a new process group */
780 dup2(s, STDIN_FILENO);
781 dup2(s, STDOUT_FILENO);
782 dup2(s, STDERR_FILENO);
783 if(ioctl(s, TIOCSCTTY, NULL) < 0)
784 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
792 signal(SIGCHLD, sigchld);
793 if(opt_io && !(fileio = fopen(opt_io, "w"))) {
794 fprintf(stderr, "Error opening %s:%s\n",
795 opt_io, strerror(errno));
803 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
805 fprintf(stderr, "\n");
810 static char buf[BUFSIZ];
811 static int buflen = 0;
814 int charsize; /* size of utf8 char in bytes */
818 /* append read bytes to unprocessed bytes */
819 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
820 die("Couldn't read from shell: %s\n", SERRNO);
822 /* process every complete utf8 char */
825 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
826 charsize = utf8decode(ptr, &utf8c);
827 utf8encode(&utf8c, s);
833 /* keep any uncomplete utf8 char for the next call */
834 memmove(buf, ptr, buflen);
838 ttywrite(const char *s, size_t n) {
839 if(write(cmdfd, s, n) == -1)
840 die("write error on tty: %s\n", SERRNO);
844 ttyresize(int x, int y) {
851 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
852 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
856 tsetdirt(int top, int bot)
860 LIMIT(top, 0, term.row-1);
861 LIMIT(bot, 0, term.row-1);
863 for(i = top; i <= bot; i++)
870 tsetdirt(0, term.row-1);
877 if(mode == CURSOR_SAVE)
879 else if(mode == CURSOR_LOAD)
880 term.c = c, tmoveto(c.x, c.y);
890 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
892 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
893 for(i = TAB; i < term.col; i += TAB)
895 term.top = 0, term.bot = term.row - 1;
896 term.mode = MODE_WRAP;
897 tclearregion(0, 0, term.col-1, term.row-1);
901 tnew(int col, int row) {
902 /* set screen size */
903 term.row = row, term.col = col;
904 term.line = malloc(term.row * sizeof(Line));
905 term.alt = malloc(term.row * sizeof(Line));
906 term.dirty = malloc(term.row * sizeof(*term.dirty));
907 term.tabs = malloc(term.col * sizeof(*term.tabs));
909 for(row = 0; row < term.row; row++) {
910 term.line[row] = malloc(term.col * sizeof(Glyph));
911 term.alt [row] = malloc(term.col * sizeof(Glyph));
914 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
921 Line* tmp = term.line;
922 term.line = term.alt;
924 term.mode ^= MODE_ALTSCREEN;
929 tscrolldown(int orig, int n) {
933 LIMIT(n, 0, term.bot-orig+1);
935 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
937 for(i = term.bot; i >= orig+n; i--) {
939 term.line[i] = term.line[i-n];
940 term.line[i-n] = temp;
950 tscrollup(int orig, int n) {
953 LIMIT(n, 0, term.bot-orig+1);
955 tclearregion(0, orig, term.col-1, orig+n-1);
957 for(i = orig; i <= term.bot-n; i++) {
959 term.line[i] = term.line[i+n];
960 term.line[i+n] = temp;
970 selscroll(int orig, int n) {
974 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
975 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
979 if(sel.by < term.top) {
983 if(sel.ey > term.bot) {
987 sel.b.y = sel.by, sel.b.x = sel.bx;
988 sel.e.y = sel.ey, sel.e.x = sel.ex;
993 tnewline(int first_col) {
996 tscrollup(term.top, 1);
999 tmoveto(first_col ? 0 : term.c.x, y);
1004 /* int noarg = 1; */
1005 char *p = csiescseq.buf;
1009 csiescseq.priv = 1, p++;
1011 while(p < csiescseq.buf+csiescseq.len) {
1012 while(isdigit(*p)) {
1013 csiescseq.arg[csiescseq.narg] *= 10;
1014 csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
1016 if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ)
1017 csiescseq.narg++, p++;
1019 csiescseq.mode = *p;
1027 tmoveto(int x, int y) {
1028 LIMIT(x, 0, term.col-1);
1029 LIMIT(y, 0, term.row-1);
1030 term.c.state &= ~CURSOR_WRAPNEXT;
1037 term.dirty[term.c.y] = 1;
1038 term.line[term.c.y][term.c.x] = term.c.attr;
1039 memcpy(term.line[term.c.y][term.c.x].c, c, UTF_SIZ);
1040 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
1044 tclearregion(int x1, int y1, int x2, int y2) {
1048 temp = x1, x1 = x2, x2 = temp;
1050 temp = y1, y1 = y2, y2 = temp;
1052 LIMIT(x1, 0, term.col-1);
1053 LIMIT(x2, 0, term.col-1);
1054 LIMIT(y1, 0, term.row-1);
1055 LIMIT(y2, 0, term.row-1);
1057 for(y = y1; y <= y2; y++) {
1059 for(x = x1; x <= x2; x++)
1060 term.line[y][x].state = 0;
1065 tdeletechar(int n) {
1066 int src = term.c.x + n;
1068 int size = term.col - src;
1070 term.dirty[term.c.y] = 1;
1072 if(src >= term.col) {
1073 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1076 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
1077 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1081 tinsertblank(int n) {
1084 int size = term.col - dst;
1086 term.dirty[term.c.y] = 1;
1088 if(dst >= term.col) {
1089 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1092 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
1093 tclearregion(src, term.c.y, dst - 1, term.c.y);
1097 tinsertblankline(int n) {
1098 if(term.c.y < term.top || term.c.y > term.bot)
1101 tscrolldown(term.c.y, n);
1105 tdeleteline(int n) {
1106 if(term.c.y < term.top || term.c.y > term.bot)
1109 tscrollup(term.c.y, n);
1113 tsetattr(int *attr, int l) {
1116 for(i = 0; i < l; i++) {
1119 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);
1120 term.c.attr.fg = DefaultFG;
1121 term.c.attr.bg = DefaultBG;
1124 term.c.attr.mode |= ATTR_BOLD;
1126 case 3: /* enter standout (highlight) */
1127 term.c.attr.mode |= ATTR_ITALIC;
1130 term.c.attr.mode |= ATTR_UNDERLINE;
1133 term.c.attr.mode |= ATTR_REVERSE;
1136 term.c.attr.mode &= ~ATTR_BOLD;
1138 case 23: /* leave standout (highlight) mode */
1139 term.c.attr.mode &= ~ATTR_ITALIC;
1142 term.c.attr.mode &= ~ATTR_UNDERLINE;
1145 term.c.attr.mode &= ~ATTR_REVERSE;
1148 if(i + 2 < l && attr[i + 1] == 5) {
1150 if(BETWEEN(attr[i], 0, 255))
1151 term.c.attr.fg = attr[i];
1153 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
1156 fprintf(stderr, "erresc(38): gfx attr %d unknown\n", attr[i]);
1159 term.c.attr.fg = DefaultFG;
1162 if(i + 2 < l && attr[i + 1] == 5) {
1164 if(BETWEEN(attr[i], 0, 255))
1165 term.c.attr.bg = attr[i];
1167 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
1170 fprintf(stderr, "erresc(48): gfx attr %d unknown\n", attr[i]);
1173 term.c.attr.bg = DefaultBG;
1176 if(BETWEEN(attr[i], 30, 37))
1177 term.c.attr.fg = attr[i] - 30;
1178 else if(BETWEEN(attr[i], 40, 47))
1179 term.c.attr.bg = attr[i] - 40;
1180 else if(BETWEEN(attr[i], 90, 97))
1181 term.c.attr.fg = attr[i] - 90 + 8;
1182 else if(BETWEEN(attr[i], 100, 107))
1183 term.c.attr.fg = attr[i] - 100 + 8;
1185 fprintf(stderr, "erresc(default): gfx attr %d unknown\n", attr[i]), csidump();
1192 tsetscroll(int t, int b) {
1195 LIMIT(t, 0, term.row-1);
1196 LIMIT(b, 0, term.row-1);
1206 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1209 tsetmode(bool priv, bool set, int *args, int narg) {
1212 for(lim = args + narg; args < lim; ++args) {
1216 MODBIT(term.mode, set, MODE_APPKEYPAD);
1218 case 5: /* DECSCNM -- Reverve video */
1220 MODBIT(term.mode,set, MODE_REVERSE);
1221 if(mode != term.mode)
1225 MODBIT(term.mode, set, MODE_WRAP);
1228 MODBIT(term.mode, set, MODE_CRLF);
1230 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1233 MODBIT(term.c.state, !set, CURSOR_HIDE);
1235 case 1000: /* 1000,1002: enable xterm mouse report */
1236 MODBIT(term.mode, set, MODE_MOUSEBTN);
1239 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1241 case 1049: /* = 1047 and 1048 */
1244 if(IS_SET(MODE_ALTSCREEN))
1245 tclearregion(0, 0, term.col-1, term.row-1);
1246 if((set && !IS_SET(MODE_ALTSCREEN)) ||
1247 (!set && IS_SET(MODE_ALTSCREEN))) {
1254 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1258 "erresc: unknown private set/reset mode %d\n",
1265 MODBIT(term.mode, set, MODE_INSERT);
1269 "erresc: unknown set/reset mode %d\n",
1281 switch(csiescseq.mode) {
1284 fprintf(stderr, "erresc: unknown csi ");
1288 case '@': /* ICH -- Insert <n> blank char */
1289 DEFAULT(csiescseq.arg[0], 1);
1290 tinsertblank(csiescseq.arg[0]);
1292 case 'A': /* CUU -- Cursor <n> Up */
1294 DEFAULT(csiescseq.arg[0], 1);
1295 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1297 case 'B': /* CUD -- Cursor <n> Down */
1298 DEFAULT(csiescseq.arg[0], 1);
1299 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1301 case 'C': /* CUF -- Cursor <n> Forward */
1303 DEFAULT(csiescseq.arg[0], 1);
1304 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1306 case 'D': /* CUB -- Cursor <n> Backward */
1307 DEFAULT(csiescseq.arg[0], 1);
1308 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1310 case 'E': /* CNL -- Cursor <n> Down and first col */
1311 DEFAULT(csiescseq.arg[0], 1);
1312 tmoveto(0, term.c.y+csiescseq.arg[0]);
1314 case 'F': /* CPL -- Cursor <n> Up and first col */
1315 DEFAULT(csiescseq.arg[0], 1);
1316 tmoveto(0, term.c.y-csiescseq.arg[0]);
1318 case 'g': /* TBC -- Tabulation clear */
1319 switch (csiescseq.arg[0]) {
1320 case 0: /* clear current tab stop */
1321 term.tabs[term.c.x] = 0;
1323 case 3: /* clear all the tabs */
1324 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1330 case 'G': /* CHA -- Move to <col> */
1332 DEFAULT(csiescseq.arg[0], 1);
1333 tmoveto(csiescseq.arg[0]-1, term.c.y);
1335 case 'H': /* CUP -- Move to <row> <col> */
1337 DEFAULT(csiescseq.arg[0], 1);
1338 DEFAULT(csiescseq.arg[1], 1);
1339 tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1341 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1342 DEFAULT(csiescseq.arg[0], 1);
1343 while(csiescseq.arg[0]--)
1346 case 'J': /* ED -- Clear screen */
1348 switch(csiescseq.arg[0]) {
1350 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1351 if(term.c.y < term.row-1)
1352 tclearregion(0, term.c.y+1, term.col-1, term.row-1);
1356 tclearregion(0, 0, term.col-1, term.c.y-1);
1357 tclearregion(0, term.c.y, term.c.x, term.c.y);
1360 tclearregion(0, 0, term.col-1, term.row-1);
1366 case 'K': /* EL -- Clear line */
1367 switch(csiescseq.arg[0]) {
1369 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1372 tclearregion(0, term.c.y, term.c.x, term.c.y);
1375 tclearregion(0, term.c.y, term.col-1, term.c.y);
1379 case 'S': /* SU -- Scroll <n> line up */
1380 DEFAULT(csiescseq.arg[0], 1);
1381 tscrollup(term.top, csiescseq.arg[0]);
1383 case 'T': /* SD -- Scroll <n> line down */
1384 DEFAULT(csiescseq.arg[0], 1);
1385 tscrolldown(term.top, csiescseq.arg[0]);
1387 case 'L': /* IL -- Insert <n> blank lines */
1388 DEFAULT(csiescseq.arg[0], 1);
1389 tinsertblankline(csiescseq.arg[0]);
1391 case 'l': /* RM -- Reset Mode */
1392 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1394 case 'M': /* DL -- Delete <n> lines */
1395 DEFAULT(csiescseq.arg[0], 1);
1396 tdeleteline(csiescseq.arg[0]);
1398 case 'X': /* ECH -- Erase <n> char */
1399 DEFAULT(csiescseq.arg[0], 1);
1400 tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
1402 case 'P': /* DCH -- Delete <n> char */
1403 DEFAULT(csiescseq.arg[0], 1);
1404 tdeletechar(csiescseq.arg[0]);
1406 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1407 DEFAULT(csiescseq.arg[0], 1);
1408 while(csiescseq.arg[0]--)
1411 case 'd': /* VPA -- Move to <row> */
1412 DEFAULT(csiescseq.arg[0], 1);
1413 tmoveto(term.c.x, csiescseq.arg[0]-1);
1415 case 'h': /* SM -- Set terminal mode */
1416 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1418 case 'm': /* SGR -- Terminal attribute (color) */
1419 tsetattr(csiescseq.arg, csiescseq.narg);
1421 case 'r': /* DECSTBM -- Set Scrolling Region */
1425 DEFAULT(csiescseq.arg[0], 1);
1426 DEFAULT(csiescseq.arg[1], term.row);
1427 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1431 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1432 tcursor(CURSOR_SAVE);
1434 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1435 tcursor(CURSOR_LOAD);
1444 for(i = 0; i < csiescseq.len; i++) {
1445 uint c = csiescseq.buf[i] & 0xff;
1446 if(isprint(c)) putchar(c);
1447 else if(c == '\n') printf("(\\n)");
1448 else if(c == '\r') printf("(\\r)");
1449 else if(c == 0x1b) printf("(\\e)");
1450 else printf("(%02x)", c);
1457 memset(&csiescseq, 0, sizeof(csiescseq));
1465 * TODO: make this being useful in case of color palette change.
1471 switch(strescseq.type) {
1472 case ']': /* OSC -- Operating System Command */
1478 * TODO: Handle special chars in string, like umlauts.
1481 XStoreName(xw.dpy, xw.win, strescseq.buf+2);
1485 XStoreName(xw.dpy, xw.win, strescseq.buf+1);
1487 case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
1490 fprintf(stderr, "erresc: unknown str ");
1495 case 'P': /* DSC -- Device Control String */
1496 case '_': /* APC -- Application Program Command */
1497 case '^': /* PM -- Privacy Message */
1499 fprintf(stderr, "erresc: unknown str ");
1509 * TODO: Implement parsing like for CSI when required.
1510 * Format: ESC type cmd ';' arg0 [';' argn] ESC \
1518 printf("ESC%c", strescseq.type);
1519 for(i = 0; i < strescseq.len; i++) {
1520 uint c = strescseq.buf[i] & 0xff;
1521 if(isprint(c)) putchar(c);
1522 else if(c == '\n') printf("(\\n)");
1523 else if(c == '\r') printf("(\\r)");
1524 else if(c == 0x1b) printf("(\\e)");
1525 else printf("(%02x)", c);
1532 memset(&strescseq, 0, sizeof(strescseq));
1536 tputtab(bool forward) {
1537 unsigned x = term.c.x;
1542 for(++x; x < term.col && !term.tabs[x]; ++x)
1547 for(--x; x > 0 && !term.tabs[x]; --x)
1550 tmoveto(x, term.c.y);
1558 putc(ascii, fileio);
1560 if(term.esc & ESC_START) {
1561 if(term.esc & ESC_CSI) {
1562 csiescseq.buf[csiescseq.len++] = ascii;
1563 if(BETWEEN(ascii, 0x40, 0x7E) || csiescseq.len >= ESC_BUF_SIZ) {
1565 csiparse(), csihandle();
1567 } else if(term.esc & ESC_STR) {
1570 term.esc = ESC_START | ESC_STR_END;
1572 case '\a': /* backwards compatibility to xterm */
1577 strescseq.buf[strescseq.len++] = ascii;
1578 if(strescseq.len+1 >= STR_BUF_SIZ) {
1583 } else if(term.esc & ESC_STR_END) {
1587 } else if(term.esc & ESC_ALTCHARSET) {
1589 case '0': /* Line drawing crap */
1590 term.c.attr.mode |= ATTR_GFX;
1592 case 'B': /* Back to regular text */
1593 term.c.attr.mode &= ~ATTR_GFX;
1596 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
1602 term.esc |= ESC_CSI;
1604 case 'P': /* DCS -- Device Control String */
1605 case '_': /* APC -- Application Program Command */
1606 case '^': /* PM -- Privacy Message */
1607 case ']': /* OSC -- Operating System Command */
1609 strescseq.type = ascii;
1610 term.esc |= ESC_STR;
1613 term.esc |= ESC_ALTCHARSET;
1615 case 'D': /* IND -- Linefeed */
1616 if(term.c.y == term.bot)
1617 tscrollup(term.top, 1);
1619 tmoveto(term.c.x, term.c.y+1);
1622 case 'E': /* NEL -- Next line */
1623 tnewline(1); /* always go to first col */
1626 case 'H': /* HTS -- Horizontal tab stop */
1627 term.tabs[term.c.x] = 1;
1630 case 'M': /* RI -- Reverse index */
1631 if(term.c.y == term.top)
1632 tscrolldown(term.top, 1);
1634 tmoveto(term.c.x, term.c.y-1);
1637 case 'c': /* RIS -- Reset to inital state */
1641 case '=': /* DECPAM -- Application keypad */
1642 term.mode |= MODE_APPKEYPAD;
1645 case '>': /* DECPNM -- Normal keypad */
1646 term.mode &= ~MODE_APPKEYPAD;
1649 case '7': /* DECSC -- Save Cursor */
1650 tcursor(CURSOR_SAVE);
1653 case '8': /* DECRC -- Restore Cursor */
1654 tcursor(CURSOR_LOAD);
1657 case '\\': /* ST -- Stop */
1661 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
1662 (uchar) ascii, isprint(ascii)?ascii:'.');
1667 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
1674 tmoveto(term.c.x-1, term.c.y);
1677 tmoveto(0, term.c.y);
1682 /* go to first col if the mode is set */
1683 tnewline(IS_SET(MODE_CRLF));
1686 if(!(xw.state & WIN_FOCUSED))
1691 term.esc = ESC_START;
1694 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
1695 tnewline(1); /* always go to first col */
1697 if(term.c.x+1 < term.col)
1698 tmoveto(term.c.x+1, term.c.y);
1700 term.c.state |= CURSOR_WRAPNEXT;
1706 tresize(int col, int row) {
1708 int minrow = MIN(row, term.row);
1709 int mincol = MIN(col, term.col);
1710 int slide = term.c.y - row + 1;
1712 if(col < 1 || row < 1)
1715 /* free unneeded rows */
1718 /* slide screen to keep cursor where we expect it -
1719 * tscrollup would work here, but we can optimize to
1720 * memmove because we're freeing the earlier lines */
1721 for(/* i = 0 */; i < slide; i++) {
1725 memmove(term.line, term.line + slide, row * sizeof(Line));
1726 memmove(term.alt, term.alt + slide, row * sizeof(Line));
1728 for(i += row; i < term.row; i++) {
1733 /* resize to new height */
1734 term.line = realloc(term.line, row * sizeof(Line));
1735 term.alt = realloc(term.alt, row * sizeof(Line));
1736 term.dirty = realloc(term.dirty, row * sizeof(*term.dirty));
1737 term.tabs = realloc(term.tabs, col * sizeof(*term.tabs));
1739 /* resize each row to new width, zero-pad if needed */
1740 for(i = 0; i < minrow; i++) {
1742 term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
1743 term.alt[i] = realloc(term.alt[i], col * sizeof(Glyph));
1744 for(x = mincol; x < col; x++) {
1745 term.line[i][x].state = 0;
1746 term.alt[i][x].state = 0;
1750 /* allocate any new rows */
1751 for(/* i == minrow */; i < row; i++) {
1753 term.line[i] = calloc(col, sizeof(Glyph));
1754 term.alt [i] = calloc(col, sizeof(Glyph));
1756 if(col > term.col) {
1757 bool *bp = term.tabs + term.col;
1759 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
1760 while(--bp > term.tabs && !*bp)
1762 for(bp += TAB; bp < term.tabs + col; bp += TAB)
1765 /* update terminal size */
1766 term.col = col, term.row = row;
1767 /* make use of the LIMIT in tmoveto */
1768 tmoveto(term.c.x, term.c.y);
1769 /* reset scrolling region */
1770 tsetscroll(0, row-1);
1776 xresize(int col, int row) {
1777 xw.w = MAX(1, 2*BORDER + col * xw.cw);
1778 xw.h = MAX(1, 2*BORDER + row * xw.ch);
1785 ulong white = WhitePixel(xw.dpy, xw.scr);
1787 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
1788 for(i = 0; i < LEN(colorname); i++) {
1791 if(!XAllocNamedColor(xw.dpy, xw.cmap, colorname[i], &color, &color)) {
1793 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1795 dc.col[i] = color.pixel;
1798 /* load colors [16-255] ; same colors as xterm */
1799 for(i = 16, r = 0; r < 6; r++)
1800 for(g = 0; g < 6; g++)
1801 for(b = 0; b < 6; b++) {
1802 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1803 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1804 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1805 if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
1807 fprintf(stderr, "Could not allocate color %d\n", i);
1809 dc.col[i] = color.pixel;
1813 for(r = 0; r < 24; r++, i++) {
1814 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1815 if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
1817 fprintf(stderr, "Could not allocate color %d\n", i);
1819 dc.col[i] = color.pixel;
1824 xclear(int x1, int y1, int x2, int y2) {
1825 XSetForeground(xw.dpy, dc.gc, dc.col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG]);
1826 XFillRectangle(xw.dpy, xw.buf, dc.gc,
1827 BORDER + x1 * xw.cw, BORDER + y1 * xw.ch,
1828 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1833 XClassHint class = {opt_class ? opt_class : TNAME, TNAME};
1834 XWMHints wm = {.flags = InputHint, .input = 1};
1835 XSizeHints *sizeh = NULL;
1837 sizeh = XAllocSizeHints();
1838 if(xw.isfixed == False) {
1839 sizeh->flags = PSize | PResizeInc | PBaseSize;
1840 sizeh->height = xw.h;
1841 sizeh->width = xw.w;
1842 sizeh->height_inc = xw.ch;
1843 sizeh->width_inc = xw.cw;
1844 sizeh->base_height = 2*BORDER;
1845 sizeh->base_width = 2*BORDER;
1847 sizeh->flags = PMaxSize | PMinSize;
1848 sizeh->min_width = sizeh->max_width = xw.fw;
1849 sizeh->min_height = sizeh->max_height = xw.fh;
1852 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
1857 xinitfont(char *fontstr) {
1859 char *def, **missing;
1863 set = XCreateFontSet(xw.dpy, fontstr, &missing, &n, &def);
1866 fprintf(stderr, "st: missing fontset: %s\n", missing[n]);
1867 XFreeStringList(missing);
1873 xgetfontinfo(XFontSet set, int *ascent, int *descent, short *lbearing, short *rbearing) {
1874 XFontStruct **xfonts;
1878 *ascent = *descent = *lbearing = *rbearing = 0;
1879 n = XFontsOfFontSet(set, &xfonts, &font_names);
1880 for(i = 0; i < n; i++) {
1881 *ascent = MAX(*ascent, (*xfonts)->ascent);
1882 *descent = MAX(*descent, (*xfonts)->descent);
1883 *lbearing = MAX(*lbearing, (*xfonts)->min_bounds.lbearing);
1884 *rbearing = MAX(*rbearing, (*xfonts)->max_bounds.rbearing);
1890 initfonts(char *fontstr, char *bfontstr, char *ifontstr) {
1891 if((dc.font.set = xinitfont(fontstr)) == NULL)
1892 die("Can't load font %s\n", fontstr);
1893 if((dc.bfont.set = xinitfont(bfontstr)) == NULL)
1894 die("Can't load bfont %s\n", bfontstr);
1895 if((dc.ifont.set = xinitfont(ifontstr)) == NULL)
1896 die("Can't load ifont %s\n", ifontstr);
1898 xgetfontinfo(dc.font.set, &dc.font.ascent, &dc.font.descent,
1899 &dc.font.lbearing, &dc.font.rbearing);
1900 xgetfontinfo(dc.bfont.set, &dc.bfont.ascent, &dc.bfont.descent,
1901 &dc.bfont.lbearing, &dc.bfont.rbearing);
1902 xgetfontinfo(dc.ifont.set, &dc.ifont.ascent, &dc.ifont.descent,
1903 &dc.ifont.lbearing, &dc.ifont.rbearing);
1908 XSetWindowAttributes attrs;
1913 if(!(xw.dpy = XOpenDisplay(NULL)))
1914 die("Can't open display\n");
1915 xw.scr = XDefaultScreen(xw.dpy);
1917 /* adjust fixed window geometry */
1919 sw = DisplayWidth(xw.dpy, xw.scr);
1920 sh = DisplayHeight(xw.dpy, xw.scr);
1922 xw.fx = sw + xw.fx - xw.fw - 1;
1924 xw.fy = sh + xw.fy - xw.fh - 1;
1929 /* window - default size */
1930 xw.h = 2*BORDER + term.row * xw.ch;
1931 xw.w = 2*BORDER + term.col * xw.cw;
1937 initfonts(FONT, BOLDFONT, ITALICFONT);
1939 /* XXX: Assuming same size for bold font */
1940 xw.cw = dc.font.rbearing - dc.font.lbearing;
1941 xw.ch = dc.font.ascent + dc.font.descent;
1944 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1947 attrs.background_pixel = dc.col[DefaultBG];
1948 attrs.border_pixel = dc.col[DefaultBG];
1949 attrs.bit_gravity = NorthWestGravity;
1950 attrs.event_mask = FocusChangeMask | KeyPressMask
1951 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1952 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask
1953 | EnterWindowMask | LeaveWindowMask;
1954 attrs.colormap = xw.cmap;
1956 parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
1957 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
1958 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1959 XDefaultVisual(xw.dpy, xw.scr),
1960 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
1963 xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
1967 xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
1968 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
1969 | XIMStatusNothing, XNClientWindow, xw.win,
1970 XNFocusWindow, xw.win, NULL);
1972 dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
1974 /* white cursor, black outline */
1975 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
1976 XDefineCursor(xw.dpy, xw.win, cursor);
1977 XRecolorCursor(xw.dpy, cursor,
1978 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
1979 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
1981 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1983 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
1984 XMapWindow(xw.dpy, xw.win);
1990 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
1991 int fg = base.fg, bg = base.bg, temp;
1992 int winx = BORDER+x*xw.cw, winy = BORDER+y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
1993 XFontSet fontset = dc.font.set;
1996 /* only switch default fg/bg if term is in RV mode */
1997 if(IS_SET(MODE_REVERSE)) {
2004 if(base.mode & ATTR_REVERSE)
2005 temp = fg, fg = bg, bg = temp;
2007 if(base.mode & ATTR_BOLD) {
2009 fontset = dc.bfont.set;
2012 if(base.mode & ATTR_ITALIC)
2013 fontset = dc.ifont.set;
2015 XSetBackground(xw.dpy, dc.gc, dc.col[bg]);
2016 XSetForeground(xw.dpy, dc.gc, dc.col[fg]);
2018 if(base.mode & ATTR_GFX) {
2019 for(i = 0; i < bytelen; i++) {
2020 char c = gfx[(uint)s[i] % 256];
2023 else if(s[i] > 0x5f)
2028 XmbDrawImageString(xw.dpy, xw.buf, fontset, dc.gc, winx, winy, s, bytelen);
2030 if(base.mode & ATTR_UNDERLINE)
2031 XDrawLine(xw.dpy, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
2034 /* copy buffer pixmap to screen pixmap */
2037 XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
2038 XdbeSwapBuffers(xw.dpy, swpinfo, 1);
2044 static int oldx = 0;
2045 static int oldy = 0;
2047 Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
2049 LIMIT(oldx, 0, term.col-1);
2050 LIMIT(oldy, 0, term.row-1);
2052 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2053 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2055 /* remove the old cursor */
2056 if(term.line[oldy][oldx].state & GLYPH_SET) {
2057 sl = utf8size(term.line[oldy][oldx].c);
2058 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1, sl);
2060 xclear(oldx, oldy, oldx, oldy);
2064 /* draw the new one */
2065 if(!(term.c.state & CURSOR_HIDE)) {
2066 if(!(xw.state & WIN_FOCUSED))
2069 if(IS_SET(MODE_REVERSE))
2070 g.mode |= ATTR_REVERSE, g.fg = DefaultCS, g.bg = DefaultFG;
2073 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2074 oldx = term.c.x, oldy = term.c.y;
2082 struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
2085 nanosleep(&tv, NULL);
2090 drawregion(0, 0, term.col, term.row);
2092 gettimeofday(&xw.lastdraw, NULL);
2096 drawregion(int x1, int y1, int x2, int y2) {
2097 int ic, ib, x, y, ox, sl;
2099 char buf[DRAW_BUF_SIZ];
2100 bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN);
2102 if((sel.alt && !alt) || (!sel.alt && alt))
2104 if(!(xw.state & WIN_VISIBLE))
2107 for(y = y1; y < y2; y++) {
2110 xclear(0, y, term.col, y);
2112 base = term.line[y][0];
2114 for(x = x1; x < x2; x++) {
2115 new = term.line[y][x];
2116 if(ena_sel && *(new.c) && selected(x, y))
2117 new.mode ^= ATTR_REVERSE;
2118 if(ib > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
2119 ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
2120 xdraws(buf, base, ox, y, ic, ib);
2123 if(new.state & GLYPH_SET) {
2128 sl = utf8size(new.c);
2129 memcpy(buf+ib, new.c, sl);
2135 xdraws(buf, base, ox, y, ic, ib);
2141 expose(XEvent *ev) {
2142 XExposeEvent *e = &ev->xexpose;
2143 if(xw.state & WIN_REDRAW) {
2145 xw.state &= ~WIN_REDRAW;
2151 visibility(XEvent *ev) {
2152 XVisibilityEvent *e = &ev->xvisibility;
2153 if(e->state == VisibilityFullyObscured)
2154 xw.state &= ~WIN_VISIBLE;
2155 else if(!(xw.state & WIN_VISIBLE))
2156 /* need a full redraw for next Expose, not just a buf copy */
2157 xw.state |= WIN_VISIBLE | WIN_REDRAW;
2162 xw.state &= ~WIN_VISIBLE;
2166 xseturgency(int add) {
2167 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
2168 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
2169 XSetWMHints(xw.dpy, xw.win, h);
2175 if(ev->type == FocusIn) {
2176 xw.state |= WIN_FOCUSED;
2179 xw.state &= ~WIN_FOCUSED;
2184 kmap(KeySym k, uint state) {
2187 for(i = 0; i < LEN(key); i++) {
2188 uint mask = key[i].mask;
2189 if(key[i].k == k && ((state & mask) == mask || (mask == XK_NO_MOD && !state)))
2190 return (char*)key[i].s;
2196 kpress(XEvent *ev) {
2197 XKeyEvent *e = &ev->xkey;
2206 meta = e->state & Mod1Mask;
2207 shift = e->state & ShiftMask;
2208 len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
2210 /* 1. custom keys from config.h */
2211 if((customkey = kmap(ksym, e->state)))
2212 ttywrite(customkey, strlen(customkey));
2213 /* 2. hardcoded (overrides X lookup) */
2220 /* XXX: shift up/down doesn't work */
2221 sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', (shift ? "dacb":"DACB")[ksym - XK_Left]);
2229 if(IS_SET(MODE_CRLF))
2230 ttywrite("\r\n", 2);
2237 if(meta && len == 1)
2238 ttywrite("\033", 1);
2246 cmessage(XEvent *e) {
2248 http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
2249 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
2250 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
2251 xw.state |= WIN_FOCUSED;
2253 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
2254 xw.state &= ~WIN_FOCUSED;
2264 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
2267 xw.w = e->xconfigure.width;
2268 xw.h = e->xconfigure.height;
2269 col = (xw.w - 2*BORDER) / xw.cw;
2270 row = (xw.h - 2*BORDER) / xw.ch;
2271 if(col == term.col && row == term.row)
2273 if(tresize(col, row))
2276 ttyresize(col, row);
2280 last_draw_too_old(void) {
2282 gettimeofday(&now, NULL);
2283 return TIMEDIFF(now, xw.lastdraw) >= DRAW_TIMEOUT/1000;
2290 int xfd = XConnectionNumber(xw.dpy);
2291 struct timeval timeout = {0};
2292 bool stuff_to_print = 0;
2296 FD_SET(cmdfd, &rfd);
2299 timeout.tv_usec = SELECT_TIMEOUT;
2300 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, &timeout) < 0) {
2303 die("select failed: %s\n", SERRNO);
2305 if(FD_ISSET(cmdfd, &rfd)) {
2310 if(stuff_to_print && last_draw_too_old()) {
2315 while(XPending(xw.dpy)) {
2316 XNextEvent(xw.dpy, &ev);
2317 if(XFilterEvent(&ev, xw.win))
2319 if(handler[ev.type])
2320 (handler[ev.type])(&ev);
2326 main(int argc, char *argv[]) {
2327 int i, bitm, xr, yr;
2328 unsigned int wr, hr;
2330 xw.fw = xw.fh = xw.fx = xw.fy = 0;
2333 for(i = 1; i < argc; i++) {
2334 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
2336 if(++i < argc) opt_title = argv[i];
2339 if(++i < argc) opt_class = argv[i];
2342 if(++i < argc) opt_embed = argv[i];
2345 if(++i < argc) opt_io = argv[i];
2348 /* eat every remaining arguments */
2349 if(++i < argc) opt_cmd = &argv[i];
2355 bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
2360 if(bitm & WidthValue)
2362 if(bitm & HeightValue)
2364 if(bitm & XNegative && xw.fx == 0)
2366 if(bitm & XNegative && xw.fy == 0)
2369 if(xw.fh != 0 && xw.fw != 0)
2379 setlocale(LC_CTYPE, "");