1 /* See LICENSE for licence details. */
2 #define _XOPEN_SOURCE 600
14 #include <sys/ioctl.h>
15 #include <sys/select.h>
18 #include <sys/types.h>
22 #include <X11/Xatom.h>
24 #include <X11/Xutil.h>
25 #include <X11/cursorfont.h>
26 #include <X11/keysym.h>
27 #include <X11/extensions/Xdbe.h>
31 #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
33 #elif defined(__FreeBSD__) || defined(__DragonFly__)
38 "st " VERSION " (c) 2010-2012 st engineers\n" \
39 "usage: st [-t title] [-c class] [-g geometry]" \
40 " [-w windowid] [-v] [-f file] [-e command...]\n"
43 #define XEMBED_FOCUS_IN 4
44 #define XEMBED_FOCUS_OUT 5
47 #define ESC_BUF_SIZ 256
48 #define ESC_ARG_SIZ 16
49 #define STR_BUF_SIZ 256
50 #define STR_ARG_SIZ 16
51 #define DRAW_BUF_SIZ 20*1024
53 #define XK_NO_MOD UINT_MAX
56 #define REDRAW_TIMEOUT (80*1000) /* 80 ms */
58 #define SERRNO strerror(errno)
59 #define MIN(a, b) ((a) < (b) ? (a) : (b))
60 #define MAX(a, b) ((a) < (b) ? (b) : (a))
61 #define LEN(a) (sizeof(a) / sizeof(a[0]))
62 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
63 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
64 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
65 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
66 #define IS_SET(flag) (term.mode & (flag))
67 #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000)
68 #define X2COL(x) (((x) - BORDER)/xw.cw)
69 #define Y2ROW(y) (((y) - BORDER)/xw.ch)
71 enum glyph_attribute {
81 enum cursor_movement {
108 MODE_MOUSEMOTION = 64,
116 ESC_STR = 4, /* DSC, OSC, PM, APC */
118 ESC_STR_END = 16, /* a final string was encountered */
129 enum { B0=1, B1=2, B2=4, B3=8, B4=16, B5=32, B6=64, B7=128 };
131 typedef unsigned char uchar;
132 typedef unsigned int uint;
133 typedef unsigned long ulong;
134 typedef unsigned short ushort;
137 char c[UTF_SIZ]; /* character code */
138 uchar mode; /* attribute flags */
139 ushort fg; /* foreground */
140 ushort bg; /* background */
141 uchar state; /* state flags */
147 Glyph attr; /* current char attributes */
153 /* CSI Escape sequence structs */
154 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
156 char buf[ESC_BUF_SIZ]; /* raw string */
157 int len; /* raw string length */
159 int arg[ESC_ARG_SIZ];
160 int narg; /* nb of args */
164 /* STR Escape sequence structs */
165 /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
167 char type; /* ESC type ... */
168 char buf[STR_BUF_SIZ]; /* raw string */
169 int len; /* raw string length */
170 char *args[STR_ARG_SIZ];
171 int narg; /* nb of args */
174 /* Internal representation of the screen */
176 int row; /* nb row */
177 int col; /* nb col */
178 Line* line; /* screen */
179 Line* alt; /* alternate screen */
180 bool* dirty; /* dirtyness of lines */
181 TCursor c; /* cursor */
182 int top; /* top scroll limit */
183 int bot; /* bottom scroll limit */
184 int mode; /* terminal mode flags */
185 int esc; /* escape state flags */
189 /* Purely graphic info */
199 Bool isfixed; /* is fixed geometry? */
200 int fx, fy, fw, fh; /* fixed geometry */
201 int w; /* window width */
202 int h; /* window height */
203 int ch; /* char height */
204 int cw; /* char width */
205 char state; /* focus, redraw, visible */
215 /* TODO: use better name for vars... */
220 struct {int x, y;} b, e;
224 struct timeval tclick1;
225 struct timeval tclick2;
230 /* Drawing Context */
232 ulong col[LEN(colorname) < 256 ? 256 : LEN(colorname)];
240 } font, bfont, ifont, ibfont;
243 static void die(const char*, ...);
244 static void draw(void);
245 static void redraw(void);
246 static void drawregion(int, int, int, int);
247 static void execsh(void);
248 static void sigchld(int);
249 static void run(void);
251 static void csidump(void);
252 static void csihandle(void);
253 static void csiparse(void);
254 static void csireset(void);
255 static void strdump(void);
256 static void strhandle(void);
257 static void strparse(void);
258 static void strreset(void);
260 static void tclearregion(int, int, int, int);
261 static void tcursor(int);
262 static void tdeletechar(int);
263 static void tdeleteline(int);
264 static void tinsertblank(int);
265 static void tinsertblankline(int);
266 static void tmoveto(int, int);
267 static void tnew(int, int);
268 static void tnewline(int);
269 static void tputtab(bool);
270 static void tputc(char*);
271 static void treset(void);
272 static int tresize(int, int);
273 static void tscrollup(int, int);
274 static void tscrolldown(int, int);
275 static void tsetattr(int*, int);
276 static void tsetchar(char*);
277 static void tsetscroll(int, int);
278 static void tswapscreen(void);
279 static void tsetdirt(int, int);
280 static void tsetmode(bool, bool, int *, int);
281 static void tfulldirt(void);
283 static void ttynew(void);
284 static void ttyread(void);
285 static void ttyresize(int, int);
286 static void ttywrite(const char *, size_t);
288 static void xdraws(char *, Glyph, int, int, int, int);
289 static void xhints(void);
290 static void xclear(int, int, int, int);
291 static void xdrawcursor(void);
292 static void xinit(void);
293 static void xloadcols(void);
294 static void xresettitle(void);
295 static void xseturgency(int);
296 static void xsetsel(char*);
297 static void xresize(int, int);
299 static void expose(XEvent *);
300 static void visibility(XEvent *);
301 static void unmap(XEvent *);
302 static char* kmap(KeySym, uint);
303 static void kpress(XEvent *);
304 static void cmessage(XEvent *);
305 static void resize(XEvent *);
306 static void focus(XEvent *);
307 static void brelease(XEvent *);
308 static void bpress(XEvent *);
309 static void bmotion(XEvent *);
310 static void selnotify(XEvent *);
311 static void selclear(XEvent *);
312 static void selrequest(XEvent *);
314 static void selinit(void);
315 static inline bool selected(int, int);
316 static void selcopy(void);
317 static void selpaste(void);
318 static void selscroll(int, int);
320 static int utf8decode(char *, long *);
321 static int utf8encode(long *, char *);
322 static int utf8size(char *);
323 static int isfullutf8(char *, int);
325 static void *xmalloc(size_t);
326 static void *xrealloc(void *, size_t);
327 static void *xcalloc(size_t nmemb, size_t size);
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 xcalloc(size_t nmemb, size_t size) {
379 void *p = calloc(nmemb, size);
381 die("Out of memory\n");
386 utf8decode(char *s, long *u) {
392 if(~c & B7) { /* 0xxxxxxx */
395 } else if((c & (B7|B6|B5)) == (B7|B6)) { /* 110xxxxx */
396 *u = c&(B4|B3|B2|B1|B0);
398 } else if((c & (B7|B6|B5|B4)) == (B7|B6|B5)) { /* 1110xxxx */
399 *u = c&(B3|B2|B1|B0);
401 } else if((c & (B7|B6|B5|B4|B3)) == (B7|B6|B5|B4)) { /* 11110xxx */
406 for(i = n, ++s; i > 0; --i, ++rtn, ++s) {
408 if((c & (B7|B6)) != B7) /* 10xxxxxx */
411 *u |= c & (B5|B4|B3|B2|B1|B0);
413 if((n == 1 && *u < 0x80) ||
414 (n == 2 && *u < 0x800) ||
415 (n == 3 && *u < 0x10000) ||
416 (*u >= 0xD800 && *u <= 0xDFFF))
425 utf8encode(long *u, char *s) {
433 *sp = uc; /* 0xxxxxxx */
435 } else if(*u < 0x800) {
436 *sp = (uc >> 6) | (B7|B6); /* 110xxxxx */
438 } else if(uc < 0x10000) {
439 *sp = (uc >> 12) | (B7|B6|B5); /* 1110xxxx */
441 } else if(uc <= 0x10FFFF) {
442 *sp = (uc >> 18) | (B7|B6|B5|B4); /* 11110xxx */
447 for(i=n,++sp; i>0; --i,++sp)
448 *sp = ((uc >> 6*(i-1)) & (B5|B4|B3|B2|B1|B0)) | B7; /* 10xxxxxx */
458 /* use this if your buffer is less than UTF_SIZ, it returns 1 if you can decode
459 UTF-8 otherwise return 0 */
461 isfullutf8(char *s, int b) {
469 else if((*c1&(B7|B6|B5)) == (B7|B6) && b == 1)
471 else if((*c1&(B7|B6|B5|B4)) == (B7|B6|B5) &&
473 ((b == 2) && (*c2&(B7|B6)) == B7)))
475 else if((*c1&(B7|B6|B5|B4|B3)) == (B7|B6|B5|B4) &&
477 ((b == 2) && (*c2&(B7|B6)) == B7) ||
478 ((b == 3) && (*c2&(B7|B6)) == B7 && (*c3&(B7|B6)) == B7)))
490 else if((c&(B7|B6|B5)) == (B7|B6))
492 else if((c&(B7|B6|B5|B4)) == (B7|B6|B5))
500 memset(&sel.tclick1, 0, sizeof(sel.tclick1));
501 memset(&sel.tclick2, 0, sizeof(sel.tclick2));
505 sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
506 if(sel.xtarget == None)
507 sel.xtarget = XA_STRING;
511 selected(int x, int y) {
512 if(sel.ey == y && sel.by == y) {
513 int bx = MIN(sel.bx, sel.ex);
514 int ex = MAX(sel.bx, sel.ex);
515 return BETWEEN(x, bx, ex);
517 return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
518 || (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
522 getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
524 *b = e->xbutton.button;
526 *x = X2COL(e->xbutton.x);
527 *y = Y2ROW(e->xbutton.y);
528 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
529 sel.b.y = MIN(sel.by, sel.ey);
530 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
531 sel.e.y = MAX(sel.by, sel.ey);
535 mousereport(XEvent *e) {
536 int x = X2COL(e->xbutton.x);
537 int y = Y2ROW(e->xbutton.y);
538 int button = e->xbutton.button;
539 int state = e->xbutton.state;
540 char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 };
541 static int ob, ox, oy;
544 if(e->xbutton.type == MotionNotify) {
545 if(!IS_SET(MODE_MOUSEMOTION) || (x == ox && y == oy))
549 } else if(e->xbutton.type == ButtonRelease || button == AnyButton) {
555 if(e->xbutton.type == ButtonPress) {
561 buf[3] = 32 + button + (state & ShiftMask ? 4 : 0)
562 + (state & Mod4Mask ? 8 : 0)
563 + (state & ControlMask ? 16 : 0);
565 ttywrite(buf, sizeof(buf));
570 if(IS_SET(MODE_MOUSE))
572 else if(e->xbutton.button == Button1) {
575 tsetdirt(sel.b.y, sel.e.y);
579 sel.ex = sel.bx = X2COL(e->xbutton.x);
580 sel.ey = sel.by = Y2ROW(e->xbutton.y);
587 int x, y, bufsize, is_selected = 0;
593 bufsize = (term.col+1) * (sel.e.y-sel.b.y+1) * UTF_SIZ;
594 ptr = str = xmalloc(bufsize);
596 /* append every set & selected glyph to the selection */
597 for(y = 0; y < term.row; y++) {
598 for(x = 0; x < term.col; x++) {
599 is_selected = selected(x, y);
600 if((term.line[y][x].state & GLYPH_SET) && is_selected) {
601 int size = utf8size(term.line[y][x].c);
602 memcpy(ptr, term.line[y][x].c, size);
607 /* \n at the end of every selected line except for the last one */
608 if(is_selected && y < sel.e.y)
613 sel.alt = IS_SET(MODE_ALTSCREEN);
618 selnotify(XEvent *e) {
619 ulong nitems, ofs, rem;
626 if(XGetWindowProperty(xw.dpy, xw.win, XA_PRIMARY, ofs, BUFSIZ/4,
627 False, AnyPropertyType, &type, &format,
628 &nitems, &rem, &data)) {
629 fprintf(stderr, "Clipboard allocation failed\n");
632 ttywrite((const char *) data, nitems * format / 8);
634 /* number of 32-bit chunks returned */
635 ofs += nitems * format / 32;
641 XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY, xw.win, CurrentTime);
644 void selclear(XEvent *e) {
648 tsetdirt(sel.b.y, sel.e.y);
652 selrequest(XEvent *e) {
653 XSelectionRequestEvent *xsre;
657 xsre = (XSelectionRequestEvent *) e;
658 xev.type = SelectionNotify;
659 xev.requestor = xsre->requestor;
660 xev.selection = xsre->selection;
661 xev.target = xsre->target;
662 xev.time = xsre->time;
666 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
667 if(xsre->target == xa_targets) {
668 /* respond with the supported type */
669 Atom string = sel.xtarget;
670 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
671 XA_ATOM, 32, PropModeReplace,
672 (uchar *) &string, 1);
673 xev.property = xsre->property;
674 } else if(xsre->target == sel.xtarget && sel.clip != NULL) {
675 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
676 xsre->target, 8, PropModeReplace,
677 (uchar *) sel.clip, strlen(sel.clip));
678 xev.property = xsre->property;
681 /* all done, send a notification to the listener */
682 if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
683 fprintf(stderr, "Error sending SelectionNotify event\n");
688 /* register the selection for both the clipboard and the primary */
694 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, CurrentTime);
696 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
697 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
701 brelease(XEvent *e) {
702 if(IS_SET(MODE_MOUSE)) {
706 if(e->xbutton.button == Button2)
708 else if(e->xbutton.button == Button1) {
710 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
711 term.dirty[sel.ey] = 1;
712 if(sel.bx == sel.ex && sel.by == sel.ey) {
715 gettimeofday(&now, NULL);
717 if(TIMEDIFF(now, sel.tclick2) <= TRIPLECLICK_TIMEOUT) {
718 /* triple click on the line */
719 sel.b.x = sel.bx = 0;
720 sel.e.x = sel.ex = term.col;
721 sel.b.y = sel.e.y = sel.ey;
723 } else if(TIMEDIFF(now, sel.tclick1) <= DOUBLECLICK_TIMEOUT) {
724 /* double click to select word */
726 while(sel.bx > 0 && term.line[sel.ey][sel.bx-1].state & GLYPH_SET &&
727 term.line[sel.ey][sel.bx-1].c[0] != ' ') sel.bx--;
729 while(sel.ex < term.col-1 && term.line[sel.ey][sel.ex+1].state & GLYPH_SET &&
730 term.line[sel.ey][sel.ex+1].c[0] != ' ') sel.ex++;
732 sel.b.y = sel.e.y = sel.ey;
738 memcpy(&sel.tclick2, &sel.tclick1, sizeof(struct timeval));
739 gettimeofday(&sel.tclick1, NULL);
744 if(IS_SET(MODE_MOUSE)) {
749 int oldey = sel.ey, oldex = sel.ex;
750 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
752 if(oldey != sel.ey || oldex != sel.ex) {
753 int starty = MIN(oldey, sel.ey);
754 int endy = MAX(oldey, sel.ey);
755 tsetdirt(starty, endy);
761 die(const char *errstr, ...) {
764 va_start(ap, errstr);
765 vfprintf(stderr, errstr, ap);
773 char *envshell = getenv("SHELL");
779 signal(SIGCHLD, SIG_DFL);
780 signal(SIGHUP, SIG_DFL);
781 signal(SIGINT, SIG_DFL);
782 signal(SIGQUIT, SIG_DFL);
783 signal(SIGTERM, SIG_DFL);
784 signal(SIGALRM, SIG_DFL);
786 DEFAULT(envshell, SHELL);
787 putenv("TERM="TNAME);
788 args = opt_cmd ? opt_cmd : (char*[]){envshell, "-i", NULL};
789 execvp(args[0], args);
796 if(waitpid(pid, &stat, 0) < 0)
797 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
799 exit(WEXITSTATUS(stat));
808 /* seems to work fine on linux, openbsd and freebsd */
809 struct winsize w = {term.row, term.col, 0, 0};
810 if(openpty(&m, &s, NULL, NULL, &w) < 0)
811 die("openpty failed: %s\n", SERRNO);
813 switch(pid = fork()) {
815 die("fork failed\n");
818 setsid(); /* create a new process group */
819 dup2(s, STDIN_FILENO);
820 dup2(s, STDOUT_FILENO);
821 dup2(s, STDERR_FILENO);
822 if(ioctl(s, TIOCSCTTY, NULL) < 0)
823 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
831 signal(SIGCHLD, sigchld);
833 if(!strcmp(opt_io, "-")) {
834 iofd = STDOUT_FILENO;
836 if((iofd = open(opt_io, O_WRONLY | O_CREAT, 0666)) < 0) {
837 fprintf(stderr, "Error opening %s:%s\n",
838 opt_io, strerror(errno));
848 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
850 fprintf(stderr, "\n");
855 static char buf[BUFSIZ];
856 static int buflen = 0;
859 int charsize; /* size of utf8 char in bytes */
863 /* append read bytes to unprocessed bytes */
864 if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
865 die("Couldn't read from shell: %s\n", SERRNO);
867 /* process every complete utf8 char */
870 while(buflen >= UTF_SIZ || isfullutf8(ptr,buflen)) {
871 charsize = utf8decode(ptr, &utf8c);
872 utf8encode(&utf8c, s);
878 /* keep any uncomplete utf8 char for the next call */
879 memmove(buf, ptr, buflen);
883 ttywrite(const char *s, size_t n) {
884 if(write(cmdfd, s, n) == -1)
885 die("write error on tty: %s\n", SERRNO);
889 ttyresize(int x, int y) {
896 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
897 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
901 tsetdirt(int top, int bot)
905 LIMIT(top, 0, term.row-1);
906 LIMIT(bot, 0, term.row-1);
908 for(i = top; i <= bot; i++)
915 tsetdirt(0, term.row-1);
922 if(mode == CURSOR_SAVE)
924 else if(mode == CURSOR_LOAD)
925 term.c = c, tmoveto(c.x, c.y);
935 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
937 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
938 for(i = TAB; i < term.col; i += TAB)
940 term.top = 0, term.bot = term.row - 1;
941 term.mode = MODE_WRAP;
942 tclearregion(0, 0, term.col-1, term.row-1);
946 tnew(int col, int row) {
947 /* set screen size */
948 term.row = row, term.col = col;
949 term.line = xmalloc(term.row * sizeof(Line));
950 term.alt = xmalloc(term.row * sizeof(Line));
951 term.dirty = xmalloc(term.row * sizeof(*term.dirty));
952 term.tabs = xmalloc(term.col * sizeof(*term.tabs));
954 for(row = 0; row < term.row; row++) {
955 term.line[row] = xmalloc(term.col * sizeof(Glyph));
956 term.alt [row] = xmalloc(term.col * sizeof(Glyph));
959 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
966 Line* tmp = term.line;
967 term.line = term.alt;
969 term.mode ^= MODE_ALTSCREEN;
974 tscrolldown(int orig, int n) {
978 LIMIT(n, 0, term.bot-orig+1);
980 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
982 for(i = term.bot; i >= orig+n; i--) {
984 term.line[i] = term.line[i-n];
985 term.line[i-n] = temp;
995 tscrollup(int orig, int n) {
998 LIMIT(n, 0, term.bot-orig+1);
1000 tclearregion(0, orig, term.col-1, orig+n-1);
1002 for(i = orig; i <= term.bot-n; i++) {
1003 temp = term.line[i];
1004 term.line[i] = term.line[i+n];
1005 term.line[i+n] = temp;
1008 term.dirty[i+n] = 1;
1011 selscroll(orig, -n);
1015 selscroll(int orig, int n) {
1019 if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
1020 if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
1024 if(sel.by < term.top) {
1028 if(sel.ey > term.bot) {
1032 sel.b.y = sel.by, sel.b.x = sel.bx;
1033 sel.e.y = sel.ey, sel.e.x = sel.ex;
1038 tnewline(int first_col) {
1041 tscrollup(term.top, 1);
1044 tmoveto(first_col ? 0 : term.c.x, y);
1049 /* int noarg = 1; */
1050 char *p = csiescseq.buf;
1054 csiescseq.priv = 1, p++;
1056 while(p < csiescseq.buf+csiescseq.len) {
1057 while(isdigit(*p)) {
1058 csiescseq.arg[csiescseq.narg] *= 10;
1059 csiescseq.arg[csiescseq.narg] += *p++ - '0'/*, noarg = 0 */;
1061 if(*p == ';' && csiescseq.narg+1 < ESC_ARG_SIZ)
1062 csiescseq.narg++, p++;
1064 csiescseq.mode = *p;
1072 tmoveto(int x, int y) {
1073 LIMIT(x, 0, term.col-1);
1074 LIMIT(y, 0, term.row-1);
1075 term.c.state &= ~CURSOR_WRAPNEXT;
1082 term.dirty[term.c.y] = 1;
1083 term.line[term.c.y][term.c.x] = term.c.attr;
1084 memcpy(term.line[term.c.y][term.c.x].c, c, UTF_SIZ);
1085 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
1089 tclearregion(int x1, int y1, int x2, int y2) {
1093 temp = x1, x1 = x2, x2 = temp;
1095 temp = y1, y1 = y2, y2 = temp;
1097 LIMIT(x1, 0, term.col-1);
1098 LIMIT(x2, 0, term.col-1);
1099 LIMIT(y1, 0, term.row-1);
1100 LIMIT(y2, 0, term.row-1);
1102 for(y = y1; y <= y2; y++) {
1104 for(x = x1; x <= x2; x++)
1105 term.line[y][x].state = 0;
1110 tdeletechar(int n) {
1111 int src = term.c.x + n;
1113 int size = term.col - src;
1115 term.dirty[term.c.y] = 1;
1117 if(src >= term.col) {
1118 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1121 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
1122 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
1126 tinsertblank(int n) {
1129 int size = term.col - dst;
1131 term.dirty[term.c.y] = 1;
1133 if(dst >= term.col) {
1134 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1137 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
1138 tclearregion(src, term.c.y, dst - 1, term.c.y);
1142 tinsertblankline(int n) {
1143 if(term.c.y < term.top || term.c.y > term.bot)
1146 tscrolldown(term.c.y, n);
1150 tdeleteline(int n) {
1151 if(term.c.y < term.top || term.c.y > term.bot)
1154 tscrollup(term.c.y, n);
1158 tsetattr(int *attr, int l) {
1161 for(i = 0; i < l; i++) {
1164 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD \
1165 | ATTR_ITALIC | ATTR_BLINK);
1166 term.c.attr.fg = DefaultFG;
1167 term.c.attr.bg = DefaultBG;
1170 term.c.attr.mode |= ATTR_BOLD;
1172 case 3: /* enter standout (highlight) */
1173 term.c.attr.mode |= ATTR_ITALIC;
1176 term.c.attr.mode |= ATTR_UNDERLINE;
1179 term.c.attr.mode |= ATTR_BLINK;
1182 term.c.attr.mode |= ATTR_REVERSE;
1186 term.c.attr.mode &= ~ATTR_BOLD;
1188 case 23: /* leave standout (highlight) mode */
1189 term.c.attr.mode &= ~ATTR_ITALIC;
1192 term.c.attr.mode &= ~ATTR_UNDERLINE;
1195 term.c.attr.mode &= ~ATTR_BLINK;
1198 term.c.attr.mode &= ~ATTR_REVERSE;
1201 if(i + 2 < l && attr[i + 1] == 5) {
1203 if(BETWEEN(attr[i], 0, 255))
1204 term.c.attr.fg = attr[i];
1206 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
1209 fprintf(stderr, "erresc(38): gfx attr %d unknown\n", attr[i]);
1212 term.c.attr.fg = DefaultFG;
1215 if(i + 2 < l && attr[i + 1] == 5) {
1217 if(BETWEEN(attr[i], 0, 255))
1218 term.c.attr.bg = attr[i];
1220 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
1223 fprintf(stderr, "erresc(48): gfx attr %d unknown\n", attr[i]);
1226 term.c.attr.bg = DefaultBG;
1229 if(BETWEEN(attr[i], 30, 37))
1230 term.c.attr.fg = attr[i] - 30;
1231 else if(BETWEEN(attr[i], 40, 47))
1232 term.c.attr.bg = attr[i] - 40;
1233 else if(BETWEEN(attr[i], 90, 97))
1234 term.c.attr.fg = attr[i] - 90 + 8;
1235 else if(BETWEEN(attr[i], 100, 107))
1236 term.c.attr.bg = attr[i] - 100 + 8;
1238 fprintf(stderr, "erresc(default): gfx attr %d unknown\n", attr[i]), csidump();
1245 tsetscroll(int t, int b) {
1248 LIMIT(t, 0, term.row-1);
1249 LIMIT(b, 0, term.row-1);
1259 #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
1262 tsetmode(bool priv, bool set, int *args, int narg) {
1265 for(lim = args + narg; args < lim; ++args) {
1269 MODBIT(term.mode, set, MODE_APPKEYPAD);
1271 case 5: /* DECSCNM -- Reverve video */
1273 MODBIT(term.mode,set, MODE_REVERSE);
1274 if(mode != term.mode)
1278 MODBIT(term.mode, set, MODE_WRAP);
1281 MODBIT(term.mode, set, MODE_CRLF);
1283 case 12: /* att610 -- Start blinking cursor (IGNORED) */
1286 MODBIT(term.c.state, !set, CURSOR_HIDE);
1288 case 1000: /* 1000,1002: enable xterm mouse report */
1289 MODBIT(term.mode, set, MODE_MOUSEBTN);
1292 MODBIT(term.mode, set, MODE_MOUSEMOTION);
1294 case 1049: /* = 1047 and 1048 */
1297 if(IS_SET(MODE_ALTSCREEN))
1298 tclearregion(0, 0, term.col-1, term.row-1);
1299 if((set && !IS_SET(MODE_ALTSCREEN)) ||
1300 (!set && IS_SET(MODE_ALTSCREEN))) {
1307 tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
1311 "erresc: unknown private set/reset mode %d\n",
1318 MODBIT(term.mode, set, MODE_INSERT);
1322 "erresc: unknown set/reset mode %d\n",
1334 switch(csiescseq.mode) {
1337 fprintf(stderr, "erresc: unknown csi ");
1341 case '@': /* ICH -- Insert <n> blank char */
1342 DEFAULT(csiescseq.arg[0], 1);
1343 tinsertblank(csiescseq.arg[0]);
1345 case 'A': /* CUU -- Cursor <n> Up */
1347 DEFAULT(csiescseq.arg[0], 1);
1348 tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
1350 case 'B': /* CUD -- Cursor <n> Down */
1351 DEFAULT(csiescseq.arg[0], 1);
1352 tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
1354 case 'C': /* CUF -- Cursor <n> Forward */
1356 DEFAULT(csiescseq.arg[0], 1);
1357 tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
1359 case 'D': /* CUB -- Cursor <n> Backward */
1360 DEFAULT(csiescseq.arg[0], 1);
1361 tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
1363 case 'E': /* CNL -- Cursor <n> Down and first col */
1364 DEFAULT(csiescseq.arg[0], 1);
1365 tmoveto(0, term.c.y+csiescseq.arg[0]);
1367 case 'F': /* CPL -- Cursor <n> Up and first col */
1368 DEFAULT(csiescseq.arg[0], 1);
1369 tmoveto(0, term.c.y-csiescseq.arg[0]);
1371 case 'g': /* TBC -- Tabulation clear */
1372 switch (csiescseq.arg[0]) {
1373 case 0: /* clear current tab stop */
1374 term.tabs[term.c.x] = 0;
1376 case 3: /* clear all the tabs */
1377 memset(term.tabs, 0, term.col * sizeof(*term.tabs));
1383 case 'G': /* CHA -- Move to <col> */
1385 DEFAULT(csiescseq.arg[0], 1);
1386 tmoveto(csiescseq.arg[0]-1, term.c.y);
1388 case 'H': /* CUP -- Move to <row> <col> */
1390 DEFAULT(csiescseq.arg[0], 1);
1391 DEFAULT(csiescseq.arg[1], 1);
1392 tmoveto(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
1394 case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
1395 DEFAULT(csiescseq.arg[0], 1);
1396 while(csiescseq.arg[0]--)
1399 case 'J': /* ED -- Clear screen */
1401 switch(csiescseq.arg[0]) {
1403 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1404 if(term.c.y < term.row-1)
1405 tclearregion(0, term.c.y+1, term.col-1, term.row-1);
1409 tclearregion(0, 0, term.col-1, term.c.y-1);
1410 tclearregion(0, term.c.y, term.c.x, term.c.y);
1413 tclearregion(0, 0, term.col-1, term.row-1);
1419 case 'K': /* EL -- Clear line */
1420 switch(csiescseq.arg[0]) {
1422 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
1425 tclearregion(0, term.c.y, term.c.x, term.c.y);
1428 tclearregion(0, term.c.y, term.col-1, term.c.y);
1432 case 'S': /* SU -- Scroll <n> line up */
1433 DEFAULT(csiescseq.arg[0], 1);
1434 tscrollup(term.top, csiescseq.arg[0]);
1436 case 'T': /* SD -- Scroll <n> line down */
1437 DEFAULT(csiescseq.arg[0], 1);
1438 tscrolldown(term.top, csiescseq.arg[0]);
1440 case 'L': /* IL -- Insert <n> blank lines */
1441 DEFAULT(csiescseq.arg[0], 1);
1442 tinsertblankline(csiescseq.arg[0]);
1444 case 'l': /* RM -- Reset Mode */
1445 tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
1447 case 'M': /* DL -- Delete <n> lines */
1448 DEFAULT(csiescseq.arg[0], 1);
1449 tdeleteline(csiescseq.arg[0]);
1451 case 'X': /* ECH -- Erase <n> char */
1452 DEFAULT(csiescseq.arg[0], 1);
1453 tclearregion(term.c.x, term.c.y, term.c.x + csiescseq.arg[0], term.c.y);
1455 case 'P': /* DCH -- Delete <n> char */
1456 DEFAULT(csiescseq.arg[0], 1);
1457 tdeletechar(csiescseq.arg[0]);
1459 case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
1460 DEFAULT(csiescseq.arg[0], 1);
1461 while(csiescseq.arg[0]--)
1464 case 'd': /* VPA -- Move to <row> */
1465 DEFAULT(csiescseq.arg[0], 1);
1466 tmoveto(term.c.x, csiescseq.arg[0]-1);
1468 case 'h': /* SM -- Set terminal mode */
1469 tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
1471 case 'm': /* SGR -- Terminal attribute (color) */
1472 tsetattr(csiescseq.arg, csiescseq.narg);
1474 case 'r': /* DECSTBM -- Set Scrolling Region */
1478 DEFAULT(csiescseq.arg[0], 1);
1479 DEFAULT(csiescseq.arg[1], term.row);
1480 tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
1484 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
1485 tcursor(CURSOR_SAVE);
1487 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
1488 tcursor(CURSOR_LOAD);
1497 for(i = 0; i < csiescseq.len; i++) {
1498 uint c = csiescseq.buf[i] & 0xff;
1499 if(isprint(c)) putchar(c);
1500 else if(c == '\n') printf("(\\n)");
1501 else if(c == '\r') printf("(\\r)");
1502 else if(c == 0x1b) printf("(\\e)");
1503 else printf("(%02x)", c);
1510 memset(&csiescseq, 0, sizeof(csiescseq));
1518 * TODO: make this being useful in case of color palette change.
1524 switch(strescseq.type) {
1525 case ']': /* OSC -- Operating System Command */
1531 * TODO: Handle special chars in string, like umlauts.
1534 XStoreName(xw.dpy, xw.win, strescseq.buf+2);
1538 XStoreName(xw.dpy, xw.win, strescseq.buf+1);
1540 case '4': /* TODO: Set color (arg0) to "rgb:%hexr/$hexg/$hexb" (arg1) */
1543 fprintf(stderr, "erresc: unknown str ");
1548 case 'k': /* old title set compatibility */
1549 XStoreName(xw.dpy, xw.win, strescseq.buf);
1551 case 'P': /* DSC -- Device Control String */
1552 case '_': /* APC -- Application Program Command */
1553 case '^': /* PM -- Privacy Message */
1555 fprintf(stderr, "erresc: unknown str ");
1565 * TODO: Implement parsing like for CSI when required.
1566 * Format: ESC type cmd ';' arg0 [';' argn] ESC \
1574 printf("ESC%c", strescseq.type);
1575 for(i = 0; i < strescseq.len; i++) {
1576 uint c = strescseq.buf[i] & 0xff;
1577 if(isprint(c)) putchar(c);
1578 else if(c == '\n') printf("(\\n)");
1579 else if(c == '\r') printf("(\\r)");
1580 else if(c == 0x1b) printf("(\\e)");
1581 else printf("(%02x)", c);
1588 memset(&strescseq, 0, sizeof(strescseq));
1592 tputtab(bool forward) {
1593 unsigned x = term.c.x;
1598 for(++x; x < term.col && !term.tabs[x]; ++x)
1603 for(--x; x > 0 && !term.tabs[x]; --x)
1606 tmoveto(x, term.c.y);
1616 if(term.esc & ESC_START) {
1617 if(term.esc & ESC_CSI) {
1618 csiescseq.buf[csiescseq.len++] = ascii;
1619 if(BETWEEN(ascii, 0x40, 0x7E) || csiescseq.len >= ESC_BUF_SIZ) {
1621 csiparse(), csihandle();
1623 } else if(term.esc & ESC_STR) {
1626 term.esc = ESC_START | ESC_STR_END;
1628 case '\a': /* backwards compatibility to xterm */
1633 strescseq.buf[strescseq.len++] = ascii;
1634 if(strescseq.len+1 >= STR_BUF_SIZ) {
1639 } else if(term.esc & ESC_STR_END) {
1643 } else if(term.esc & ESC_ALTCHARSET) {
1645 case '0': /* Line drawing crap */
1646 term.c.attr.mode |= ATTR_GFX;
1648 case 'B': /* Back to regular text */
1649 term.c.attr.mode &= ~ATTR_GFX;
1652 fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
1658 term.esc |= ESC_CSI;
1660 case 'P': /* DCS -- Device Control String */
1661 case '_': /* APC -- Application Program Command */
1662 case '^': /* PM -- Privacy Message */
1663 case ']': /* OSC -- Operating System Command */
1664 case 'k': /* old title set compatibility */
1666 strescseq.type = ascii;
1667 term.esc |= ESC_STR;
1670 term.esc |= ESC_ALTCHARSET;
1672 case 'D': /* IND -- Linefeed */
1673 if(term.c.y == term.bot)
1674 tscrollup(term.top, 1);
1676 tmoveto(term.c.x, term.c.y+1);
1679 case 'E': /* NEL -- Next line */
1680 tnewline(1); /* always go to first col */
1683 case 'H': /* HTS -- Horizontal tab stop */
1684 term.tabs[term.c.x] = 1;
1687 case 'M': /* RI -- Reverse index */
1688 if(term.c.y == term.top)
1689 tscrolldown(term.top, 1);
1691 tmoveto(term.c.x, term.c.y-1);
1694 case 'c': /* RIS -- Reset to inital state */
1699 case '=': /* DECPAM -- Application keypad */
1700 term.mode |= MODE_APPKEYPAD;
1703 case '>': /* DECPNM -- Normal keypad */
1704 term.mode &= ~MODE_APPKEYPAD;
1707 case '7': /* DECSC -- Save Cursor */
1708 tcursor(CURSOR_SAVE);
1711 case '8': /* DECRC -- Restore Cursor */
1712 tcursor(CURSOR_LOAD);
1715 case '\\': /* ST -- Stop */
1719 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
1720 (uchar) ascii, isprint(ascii)?ascii:'.');
1725 if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey))
1728 case '\0': /* padding character, do nothing */
1734 tmoveto(term.c.x-1, term.c.y);
1737 tmoveto(0, term.c.y);
1742 /* go to first col if the mode is set */
1743 tnewline(IS_SET(MODE_CRLF));
1746 if(!(xw.state & WIN_FOCUSED))
1751 term.esc = ESC_START;
1754 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
1755 tnewline(1); /* always go to first col */
1757 if(term.c.x+1 < term.col)
1758 tmoveto(term.c.x+1, term.c.y);
1760 term.c.state |= CURSOR_WRAPNEXT;
1766 tresize(int col, int row) {
1768 int minrow = MIN(row, term.row);
1769 int mincol = MIN(col, term.col);
1770 int slide = term.c.y - row + 1;
1772 if(col < 1 || row < 1)
1775 /* free unneeded rows */
1778 /* slide screen to keep cursor where we expect it -
1779 * tscrollup would work here, but we can optimize to
1780 * memmove because we're freeing the earlier lines */
1781 for(/* i = 0 */; i < slide; i++) {
1785 memmove(term.line, term.line + slide, row * sizeof(Line));
1786 memmove(term.alt, term.alt + slide, row * sizeof(Line));
1788 for(i += row; i < term.row; i++) {
1793 /* resize to new height */
1794 term.line = xrealloc(term.line, row * sizeof(Line));
1795 term.alt = xrealloc(term.alt, row * sizeof(Line));
1796 term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
1797 term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
1799 /* resize each row to new width, zero-pad if needed */
1800 for(i = 0; i < minrow; i++) {
1802 term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
1803 term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
1804 for(x = mincol; x < col; x++) {
1805 term.line[i][x].state = 0;
1806 term.alt[i][x].state = 0;
1810 /* allocate any new rows */
1811 for(/* i == minrow */; i < row; i++) {
1813 term.line[i] = xcalloc(col, sizeof(Glyph));
1814 term.alt [i] = xcalloc(col, sizeof(Glyph));
1816 if(col > term.col) {
1817 bool *bp = term.tabs + term.col;
1819 memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
1820 while(--bp > term.tabs && !*bp)
1822 for(bp += TAB; bp < term.tabs + col; bp += TAB)
1825 /* update terminal size */
1826 term.col = col, term.row = row;
1827 /* make use of the LIMIT in tmoveto */
1828 tmoveto(term.c.x, term.c.y);
1829 /* reset scrolling region */
1830 tsetscroll(0, row-1);
1836 xresize(int col, int row) {
1837 xw.w = MAX(1, 2*BORDER + col * xw.cw);
1838 xw.h = MAX(1, 2*BORDER + row * xw.ch);
1845 ulong white = WhitePixel(xw.dpy, xw.scr);
1847 /* load colors [0-15] colors and [256-LEN(colorname)[ (config.h) */
1848 for(i = 0; i < LEN(colorname); i++) {
1851 if(!XAllocNamedColor(xw.dpy, xw.cmap, colorname[i], &color, &color)) {
1853 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1855 dc.col[i] = color.pixel;
1858 /* load colors [16-255] ; same colors as xterm */
1859 for(i = 16, r = 0; r < 6; r++)
1860 for(g = 0; g < 6; g++)
1861 for(b = 0; b < 6; b++) {
1862 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1863 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1864 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1865 if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
1867 fprintf(stderr, "Could not allocate color %d\n", i);
1869 dc.col[i] = color.pixel;
1873 for(r = 0; r < 24; r++, i++) {
1874 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1875 if(!XAllocColor(xw.dpy, xw.cmap, &color)) {
1877 fprintf(stderr, "Could not allocate color %d\n", i);
1879 dc.col[i] = color.pixel;
1884 xclear(int x1, int y1, int x2, int y2) {
1885 XSetForeground(xw.dpy, dc.gc, dc.col[IS_SET(MODE_REVERSE) ? DefaultFG : DefaultBG]);
1886 XFillRectangle(xw.dpy, xw.buf, dc.gc,
1887 BORDER + x1 * xw.cw, BORDER + y1 * xw.ch,
1888 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1893 XClassHint class = {opt_class ? opt_class : TNAME, TNAME};
1894 XWMHints wm = {.flags = InputHint, .input = 1};
1895 XSizeHints *sizeh = NULL;
1897 sizeh = XAllocSizeHints();
1898 if(xw.isfixed == False) {
1899 sizeh->flags = PSize | PResizeInc | PBaseSize;
1900 sizeh->height = xw.h;
1901 sizeh->width = xw.w;
1902 sizeh->height_inc = xw.ch;
1903 sizeh->width_inc = xw.cw;
1904 sizeh->base_height = 2*BORDER;
1905 sizeh->base_width = 2*BORDER;
1907 sizeh->flags = PMaxSize | PMinSize;
1908 sizeh->min_width = sizeh->max_width = xw.fw;
1909 sizeh->min_height = sizeh->max_height = xw.fh;
1912 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, &class);
1917 xinitfont(char *fontstr) {
1919 char *def, **missing;
1923 set = XCreateFontSet(xw.dpy, fontstr, &missing, &n, &def);
1926 fprintf(stderr, "st: missing fontset: %s\n", missing[n]);
1927 XFreeStringList(missing);
1933 xgetfontinfo(XFontSet set, int *ascent, int *descent, short *lbearing, short *rbearing) {
1934 XFontStruct **xfonts;
1938 *ascent = *descent = *lbearing = *rbearing = 0;
1939 n = XFontsOfFontSet(set, &xfonts, &font_names);
1940 for(i = 0; i < n; i++) {
1941 *ascent = MAX(*ascent, (*xfonts)->ascent);
1942 *descent = MAX(*descent, (*xfonts)->descent);
1943 *lbearing = MAX(*lbearing, (*xfonts)->min_bounds.lbearing);
1944 *rbearing = MAX(*rbearing, (*xfonts)->max_bounds.rbearing);
1950 initfonts(char *fontstr, char *bfontstr, char *ifontstr, char *ibfontstr) {
1951 if((dc.font.set = xinitfont(fontstr)) == NULL)
1952 die("Can't load font %s\n", fontstr);
1953 if((dc.bfont.set = xinitfont(bfontstr)) == NULL)
1954 die("Can't load bfont %s\n", bfontstr);
1955 if((dc.ifont.set = xinitfont(ifontstr)) == NULL)
1956 die("Can't load ifont %s\n", ifontstr);
1957 if((dc.ibfont.set = xinitfont(ibfontstr)) == NULL)
1958 die("Can't load ibfont %s\n", ibfontstr);
1960 xgetfontinfo(dc.font.set, &dc.font.ascent, &dc.font.descent,
1961 &dc.font.lbearing, &dc.font.rbearing);
1962 xgetfontinfo(dc.bfont.set, &dc.bfont.ascent, &dc.bfont.descent,
1963 &dc.bfont.lbearing, &dc.bfont.rbearing);
1964 xgetfontinfo(dc.ifont.set, &dc.ifont.ascent, &dc.ifont.descent,
1965 &dc.ifont.lbearing, &dc.ifont.rbearing);
1966 xgetfontinfo(dc.ibfont.set, &dc.ibfont.ascent, &dc.ibfont.descent,
1967 &dc.ibfont.lbearing, &dc.ibfont.rbearing);
1972 XSetWindowAttributes attrs;
1975 int sw, sh, major, minor;
1977 if(!(xw.dpy = XOpenDisplay(NULL)))
1978 die("Can't open display\n");
1979 xw.scr = XDefaultScreen(xw.dpy);
1982 initfonts(FONT, BOLDFONT, ITALICFONT, ITALICBOLDFONT);
1984 /* XXX: Assuming same size for bold font */
1985 xw.cw = dc.font.rbearing - dc.font.lbearing;
1986 xw.ch = dc.font.ascent + dc.font.descent;
1989 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1992 /* adjust fixed window geometry */
1994 sw = DisplayWidth(xw.dpy, xw.scr);
1995 sh = DisplayHeight(xw.dpy, xw.scr);
1997 xw.fx = sw + xw.fx - xw.fw - 1;
1999 xw.fy = sh + xw.fy - xw.fh - 1;
2004 /* window - default size */
2005 xw.h = 2*BORDER + term.row * xw.ch;
2006 xw.w = 2*BORDER + term.col * xw.cw;
2011 attrs.background_pixel = dc.col[DefaultBG];
2012 attrs.border_pixel = dc.col[DefaultBG];
2013 attrs.bit_gravity = NorthWestGravity;
2014 attrs.event_mask = FocusChangeMask | KeyPressMask
2015 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
2016 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
2017 attrs.colormap = xw.cmap;
2019 parent = opt_embed ? strtol(opt_embed, NULL, 0) : XRootWindow(xw.dpy, xw.scr);
2020 xw.win = XCreateWindow(xw.dpy, parent, xw.fx, xw.fy,
2021 xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
2022 XDefaultVisual(xw.dpy, xw.scr),
2023 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
2026 if(!XdbeQueryExtension(xw.dpy, &major, &minor))
2027 die("Xdbe extension is not present\n");
2028 xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
2031 xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
2032 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
2033 | XIMStatusNothing, XNClientWindow, xw.win,
2034 XNFocusWindow, xw.win, NULL);
2036 dc.gc = XCreateGC(xw.dpy, xw.win, 0, NULL);
2038 /* white cursor, black outline */
2039 cursor = XCreateFontCursor(xw.dpy, XC_xterm);
2040 XDefineCursor(xw.dpy, xw.win, cursor);
2041 XRecolorCursor(xw.dpy, cursor,
2042 &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
2043 &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
2045 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
2048 XMapWindow(xw.dpy, xw.win);
2054 xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
2055 int fg = base.fg, bg = base.bg, temp;
2056 int winx = BORDER+x*xw.cw, winy = BORDER+y*xw.ch + dc.font.ascent, width = charlen*xw.cw;
2057 XFontSet fontset = dc.font.set;
2060 /* only switch default fg/bg if term is in RV mode */
2061 if(IS_SET(MODE_REVERSE)) {
2068 if(base.mode & ATTR_REVERSE)
2069 temp = fg, fg = bg, bg = temp;
2071 if(base.mode & ATTR_BOLD) {
2073 fontset = dc.bfont.set;
2076 if(base.mode & ATTR_ITALIC)
2077 fontset = dc.ifont.set;
2078 if(base.mode & (ATTR_ITALIC|ATTR_ITALIC))
2079 fontset = dc.ibfont.set;
2081 XSetBackground(xw.dpy, dc.gc, dc.col[bg]);
2082 XSetForeground(xw.dpy, dc.gc, dc.col[fg]);
2084 if(base.mode & ATTR_GFX) {
2085 for(i = 0; i < bytelen; i++) {
2086 char c = gfx[(uint)s[i] % 256];
2089 else if(s[i] > 0x5f)
2094 XmbDrawImageString(xw.dpy, xw.buf, fontset, dc.gc, winx, winy, s, bytelen);
2096 if(base.mode & ATTR_UNDERLINE)
2097 XDrawLine(xw.dpy, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
2102 static int oldx = 0;
2103 static int oldy = 0;
2105 Glyph g = {{' '}, ATTR_NULL, DefaultBG, DefaultCS, 0};
2107 LIMIT(oldx, 0, term.col-1);
2108 LIMIT(oldy, 0, term.row-1);
2110 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
2111 memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
2113 /* remove the old cursor */
2114 if(term.line[oldy][oldx].state & GLYPH_SET) {
2115 sl = utf8size(term.line[oldy][oldx].c);
2116 xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1, sl);
2118 xclear(oldx, oldy, oldx, oldy);
2120 /* draw the new one */
2121 if(!(term.c.state & CURSOR_HIDE)) {
2122 if(!(xw.state & WIN_FOCUSED))
2125 if(IS_SET(MODE_REVERSE))
2126 g.mode |= ATTR_REVERSE, g.fg = DefaultCS, g.bg = DefaultFG;
2129 xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
2130 oldx = term.c.x, oldy = term.c.y;
2136 XStoreName(xw.dpy, xw.win, opt_title ? opt_title : "st");
2141 struct timespec tv = {0, REDRAW_TIMEOUT * 1000};
2144 XSync(xw.dpy, False); /* necessary for a good tput flash */
2145 nanosleep(&tv, NULL);
2150 XdbeSwapInfo swpinfo[1] = {{xw.win, XdbeCopied}};
2152 drawregion(0, 0, term.col, term.row);
2153 XdbeSwapBuffers(xw.dpy, swpinfo, 1);
2157 drawregion(int x1, int y1, int x2, int y2) {
2158 int ic, ib, x, y, ox, sl;
2160 char buf[DRAW_BUF_SIZ];
2161 bool ena_sel = sel.bx != -1, alt = IS_SET(MODE_ALTSCREEN);
2163 if((sel.alt && !alt) || (!sel.alt && alt))
2165 if(!(xw.state & WIN_VISIBLE))
2168 for(y = y1; y < y2; y++) {
2171 xclear(0, y, term.col, y);
2173 base = term.line[y][0];
2175 for(x = x1; x < x2; x++) {
2176 new = term.line[y][x];
2177 if(ena_sel && *(new.c) && selected(x, y))
2178 new.mode ^= ATTR_REVERSE;
2179 if(ib > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
2180 ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
2181 xdraws(buf, base, ox, y, ic, ib);
2184 if(new.state & GLYPH_SET) {
2189 sl = utf8size(new.c);
2190 memcpy(buf+ib, new.c, sl);
2196 xdraws(buf, base, ox, y, ic, ib);
2202 expose(XEvent *ev) {
2203 XExposeEvent *e = &ev->xexpose;
2204 if(xw.state & WIN_REDRAW) {
2206 xw.state &= ~WIN_REDRAW;
2211 visibility(XEvent *ev) {
2212 XVisibilityEvent *e = &ev->xvisibility;
2213 if(e->state == VisibilityFullyObscured)
2214 xw.state &= ~WIN_VISIBLE;
2215 else if(!(xw.state & WIN_VISIBLE))
2216 /* need a full redraw for next Expose, not just a buf copy */
2217 xw.state |= WIN_VISIBLE | WIN_REDRAW;
2222 xw.state &= ~WIN_VISIBLE;
2226 xseturgency(int add) {
2227 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
2228 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
2229 XSetWMHints(xw.dpy, xw.win, h);
2235 if(ev->type == FocusIn) {
2236 xw.state |= WIN_FOCUSED;
2239 xw.state &= ~WIN_FOCUSED;
2243 kmap(KeySym k, uint state) {
2246 for(i = 0; i < LEN(key); i++) {
2247 uint mask = key[i].mask;
2248 if(key[i].k == k && ((state & mask) == mask || (mask == XK_NO_MOD && !state)))
2249 return (char*)key[i].s;
2255 kpress(XEvent *ev) {
2256 XKeyEvent *e = &ev->xkey;
2265 meta = e->state & Mod1Mask;
2266 shift = e->state & ShiftMask;
2267 len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
2269 /* 1. custom keys from config.h */
2270 if((customkey = kmap(ksym, e->state)))
2271 ttywrite(customkey, strlen(customkey));
2272 /* 2. hardcoded (overrides X lookup) */
2279 /* XXX: shift up/down doesn't work */
2280 sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', (shift ? "dacb":"DACB")[ksym - XK_Left]);
2288 if(IS_SET(MODE_CRLF))
2289 ttywrite("\r\n", 2);
2296 if(meta && len == 1)
2297 ttywrite("\033", 1);
2305 cmessage(XEvent *e) {
2307 http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
2308 if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
2309 if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
2310 xw.state |= WIN_FOCUSED;
2312 } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
2313 xw.state &= ~WIN_FOCUSED;
2322 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
2325 xw.w = e->xconfigure.width;
2326 xw.h = e->xconfigure.height;
2327 col = (xw.w - 2*BORDER) / xw.cw;
2328 row = (xw.h - 2*BORDER) / xw.ch;
2329 if(col == term.col && row == term.row)
2333 ttyresize(col, row);
2340 int xfd = XConnectionNumber(xw.dpy), i;
2341 struct timeval drawtimeout, *tv = NULL;
2345 FD_SET(cmdfd, &rfd);
2347 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv) < 0) {
2350 die("select failed: %s\n", SERRNO);
2354 * Stop after a certain number of reads so the user does not
2355 * feel like the system is stuttering.
2357 if(i < 1000 && FD_ISSET(cmdfd, &rfd)) {
2361 * Just wait a bit so it isn't disturbing the
2362 * user and the system is able to write something.
2364 drawtimeout.tv_sec = 0;
2365 drawtimeout.tv_usec = 5;
2372 while(XPending(xw.dpy)) {
2373 XNextEvent(xw.dpy, &ev);
2374 if(XFilterEvent(&ev, xw.win))
2376 if(handler[ev.type])
2377 (handler[ev.type])(&ev);
2386 main(int argc, char *argv[]) {
2387 int i, bitm, xr, yr;
2388 unsigned int wr, hr;
2390 xw.fw = xw.fh = xw.fx = xw.fy = 0;
2393 for(i = 1; i < argc; i++) {
2394 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
2396 if(++i < argc) opt_title = argv[i];
2399 if(++i < argc) opt_class = argv[i];
2402 if(++i < argc) opt_embed = argv[i];
2405 if(++i < argc) opt_io = argv[i];
2408 /* eat every remaining arguments */
2409 if(++i < argc) opt_cmd = &argv[i];
2415 bitm = XParseGeometry(argv[i], &xr, &yr, &wr, &hr);
2420 if(bitm & WidthValue)
2422 if(bitm & HeightValue)
2424 if(bitm & XNegative && xw.fx == 0)
2426 if(bitm & XNegative && xw.fy == 0)
2429 if(xw.fh != 0 && xw.fw != 0)
2439 setlocale(LC_CTYPE, "");