1 /* See LICENSE for licence details. */
2 #define _XOPEN_SOURCE 600
13 #include <sys/ioctl.h>
14 #include <sys/select.h>
16 #include <sys/types.h>
20 #include <X11/keysym.h>
21 #include <X11/Xutil.h>
25 #elif defined(__OpenBSD__) || defined(__NetBSD__)
27 #elif defined(__FreeBSD__) || defined(__DragonFly__)
32 "st-" VERSION ", (c) 2010 st engineers\n" \
33 "usage: st [-t title] [-e cmd] [-v]\n"
36 #define ESC_TITLE_SIZ 256
37 #define ESC_BUF_SIZ 256
38 #define ESC_ARG_SIZ 16
39 #define DRAW_BUF_SIZ 1024
41 #define SERRNO strerror(errno)
42 #define MIN(a, b) ((a) < (b) ? (a) : (b))
43 #define MAX(a, b) ((a) < (b) ? (b) : (a))
44 #define LEN(a) (sizeof(a) / sizeof(a[0]))
45 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
46 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
47 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
48 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
49 #define IS_SET(flag) (term.mode & (flag))
51 /* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
52 enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 };
53 enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT,
54 CURSOR_SAVE, CURSOR_LOAD };
55 enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 };
56 enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
57 enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8 };
58 enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
59 enum { SCREEN_UPDATE, SCREEN_REDRAW };
62 char c; /* character code */
63 char mode; /* attribute flags */
64 int fg; /* foreground */
65 int bg; /* background */
66 char state; /* state flags */
72 Glyph attr; /* current char attributes */
78 /* CSI Escape sequence structs */
79 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
81 char buf[ESC_BUF_SIZ]; /* raw string */
82 int len; /* raw string length */
85 int narg; /* nb of args */
89 /* Internal representation of the screen */
93 Line* line; /* screen */
94 Line* alt; /* alternate screen */
95 TCursor c; /* cursor */
96 int top; /* top scroll limit */
97 int bot; /* bottom scroll limit */
98 int mode; /* terminal mode flags */
99 int esc; /* escape state flags */
100 char title[ESC_TITLE_SIZ];
104 /* Purely graphic info */
111 int w; /* window width */
112 int h; /* window height */
113 int bufw; /* pixmap width */
114 int bufh; /* pixmap height */
115 int ch; /* char height */
116 int cw; /* char width */
125 /* Drawing Context */
127 unsigned long col[256];
133 /* TODO: use better name for vars... */
138 struct {int x, y;} b, e;
144 static void die(const char *errstr, ...);
145 static void draw(int);
146 static void execsh(void);
147 static void sigchld(int);
148 static void run(void);
150 static void csidump(void);
151 static void csihandle(void);
152 static void csiparse(void);
153 static void csireset(void);
155 static void tclearregion(int, int, int, int);
156 static void tcursor(int);
157 static void tdeletechar(int);
158 static void tdeleteline(int);
159 static void tinsertblank(int);
160 static void tinsertblankline(int);
161 static void tmoveto(int, int);
162 static void tnew(int, int);
163 static void tnewline(void);
164 static void tputtab(void);
165 static void tputc(char);
166 static void tputs(char*, int);
167 static void treset(void);
168 static void tresize(int, int);
169 static void tscrollup(int, int);
170 static void tscrolldown(int, int);
171 static void tsetattr(int*, int);
172 static void tsetchar(char);
173 static void tsetscroll(int, int);
174 static void tswapscreen(void);
176 static void ttynew(void);
177 static void ttyread(void);
178 static void ttyresize(int, int);
179 static void ttywrite(const char *, size_t);
181 static void xdraws(char *, Glyph, int, int, int);
182 static void xhints(void);
183 static void xclear(int, int, int, int);
184 static void xdrawcursor(void);
185 static void xinit(void);
186 static void xloadcols(void);
187 static void xseturgency(int);
189 static void expose(XEvent *);
190 static char* kmap(KeySym);
191 static void kpress(XEvent *);
192 static void resize(XEvent *);
193 static void focus(XEvent *);
194 static void brelease(XEvent *);
195 static void bpress(XEvent *);
196 static void bmotion(XEvent *);
199 static void (*handler[LASTEvent])(XEvent *) = {
202 [ConfigureNotify] = resize,
205 [MotionNotify] = bmotion,
206 [ButtonPress] = bpress,
207 [ButtonRelease] = brelease,
214 static CSIEscape escseq;
217 static Selection sel;
218 static char *opt_cmd = NULL;
219 static char *opt_title = NULL;
228 static inline int selected(int x, int y) {
229 if(sel.ey == y && sel.by == y) {
230 int bx = MIN(sel.bx, sel.ex);
231 int ex = MAX(sel.bx, sel.ex);
232 return BETWEEN(x, bx, ex);
234 return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
235 || (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
238 static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
239 if(b) *b = e->xbutton.state,
240 *b=*b==4096?5:*b==2048?4:*b==1024?3:*b==512?2:*b==256?1:-1;
241 *x = e->xbutton.x/xw.cw;
242 *y = e->xbutton.y/xw.ch;
243 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
244 sel.b.y = MIN(sel.by, sel.ey);
245 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
246 sel.e.y = MAX(sel.by, sel.ey);
249 static void bpress(XEvent *e) {
251 sel.ex = sel.bx = e->xbutton.x/xw.cw;
252 sel.ey = sel.by = e->xbutton.y/xw.ch;
255 static char *getseltext() {
260 sz = (term.col+1) * (sel.e.y-sel.b.y+1);
261 ptr = str = malloc(sz);
262 for(y = 0; y < term.row; y++) {
263 for(x = 0; x < term.col; x++)
264 if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y)))
265 *ptr = term.line[y][x].c, ptr++;
273 /* TODO: use X11 clipboard */
274 static void selcopy(char *str) {
279 static void selpaste() {
281 ttywrite(sel.clip, strlen(sel.clip));
284 /* TODO: doubleclick to select word */
285 static void brelease(XEvent *e) {
288 getbuttoninfo(e, &b, &sel.ex, &sel.ey);
289 if(sel.bx==sel.ex && sel.by==sel.ey) {
295 selcopy(getseltext());
300 static void bmotion(XEvent *e) {
302 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
313 for(row = 0; row < term.row; row++) {
314 for(col = 0; col < term.col; col++) {
315 if(col == term.c.x && row == term.c.y)
318 c = term.line[row][col];
319 putchar(c.state & GLYPH_SET ? c.c : '.');
328 die(const char *errstr, ...) {
331 va_start(ap, errstr);
332 vfprintf(stderr, errstr, ap);
339 char *args[] = {getenv("SHELL"), "-i", NULL};
341 args[0] = opt_cmd, args[1] = NULL;
343 DEFAULT(args[0], SHELL);
344 putenv("TERM="TNAME);
345 execvp(args[0], args);
351 if(waitpid(pid, &stat, 0) < 0)
352 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
354 exit(WEXITSTATUS(stat));
363 /* seems to work fine on linux, openbsd and freebsd */
364 struct winsize w = {term.row, term.col, 0, 0};
365 if(openpty(&m, &s, NULL, NULL, &w) < 0)
366 die("openpty failed: %s\n", SERRNO);
368 switch(pid = fork()) {
370 die("fork failed\n");
373 setsid(); /* create a new process group */
374 dup2(s, STDIN_FILENO);
375 dup2(s, STDOUT_FILENO);
376 dup2(s, STDERR_FILENO);
377 if(ioctl(s, TIOCSCTTY, NULL) < 0)
378 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
386 signal(SIGCHLD, sigchld);
393 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
395 fprintf(stderr, "\n");
403 if((ret = read(cmdfd, buf, LEN(buf))) < 0)
404 die("Couldn't read from shell: %s\n", SERRNO);
410 ttywrite(const char *s, size_t n) {
411 if(write(cmdfd, s, n) == -1)
412 die("write error on tty: %s\n", SERRNO);
416 ttyresize(int x, int y) {
421 w.ws_xpixel = w.ws_ypixel = 0;
422 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
423 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
430 if(mode == CURSOR_SAVE)
432 else if(mode == CURSOR_LOAD)
433 term.c = c, tmoveto(c.x, c.y);
442 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
444 term.top = 0, term.bot = term.row - 1;
445 term.mode = MODE_WRAP;
446 tclearregion(0, 0, term.col-1, term.row-1);
450 tnew(int col, int row) {
451 /* set screen size */
452 term.row = row, term.col = col;
453 term.line = malloc(term.row * sizeof(Line));
454 term.alt = malloc(term.row * sizeof(Line));
455 for(row = 0 ; row < term.row; row++) {
456 term.line[row] = malloc(term.col * sizeof(Glyph));
457 term.alt [row] = malloc(term.col * sizeof(Glyph));
465 Line* tmp = term.line;
466 term.line = term.alt;
468 term.mode ^= MODE_ALTSCREEN;
472 tscrolldown(int orig, int n) {
476 LIMIT(n, 0, term.bot-orig+1);
478 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
480 for(i = term.bot; i >= orig+n; i--) {
482 term.line[i] = term.line[i-n];
483 term.line[i-n] = temp;
488 tscrollup(int orig, int n) {
491 LIMIT(n, 0, term.bot-orig+1);
493 tclearregion(0, orig, term.col-1, orig+n-1);
495 for(i = orig; i <= term.bot-n; i++) {
497 term.line[i] = term.line[i+n];
498 term.line[i+n] = temp;
505 if(term.c.y == term.bot)
506 tscrollup(term.top, 1);
515 char *p = escseq.buf;
519 escseq.priv = 1, p++;
521 while(p < escseq.buf+escseq.len) {
523 escseq.arg[escseq.narg] *= 10;
524 escseq.arg[escseq.narg] += *p++ - '0'/*, noarg = 0 */;
526 if(*p == ';' && escseq.narg+1 < ESC_ARG_SIZ)
537 tmoveto(int x, int y) {
538 LIMIT(x, 0, term.col-1);
539 LIMIT(y, 0, term.row-1);
540 term.c.state &= ~CURSOR_WRAPNEXT;
547 term.line[term.c.y][term.c.x] = term.c.attr;
548 term.line[term.c.y][term.c.x].c = c;
549 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
553 tclearregion(int x1, int y1, int x2, int y2) {
557 temp = x1, x1 = x2, x2 = temp;
559 temp = y1, y1 = y2, y2 = temp;
561 LIMIT(x1, 0, term.col-1);
562 LIMIT(x2, 0, term.col-1);
563 LIMIT(y1, 0, term.row-1);
564 LIMIT(y2, 0, term.row-1);
566 for(y = y1; y <= y2; y++)
567 memset(&term.line[y][x1], 0, sizeof(Glyph)*(x2-x1+1));
572 int src = term.c.x + n;
574 int size = term.col - src;
576 if(src >= term.col) {
577 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
580 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
581 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
585 tinsertblank(int n) {
588 int size = term.col - dst;
590 if(dst >= term.col) {
591 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
594 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
595 tclearregion(src, term.c.y, dst - 1, term.c.y);
599 tinsertblankline(int n) {
600 if(term.c.y < term.top || term.c.y > term.bot)
603 tscrolldown(term.c.y, n);
608 if(term.c.y < term.top || term.c.y > term.bot)
611 tscrollup(term.c.y, n);
615 tsetattr(int *attr, int l) {
618 for(i = 0; i < l; i++) {
621 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);
622 term.c.attr.fg = DefaultFG;
623 term.c.attr.bg = DefaultBG;
626 term.c.attr.mode |= ATTR_BOLD;
629 term.c.attr.mode |= ATTR_UNDERLINE;
632 term.c.attr.mode |= ATTR_REVERSE;
635 term.c.attr.mode &= ~ATTR_BOLD;
638 term.c.attr.mode &= ~ATTR_UNDERLINE;
641 term.c.attr.mode &= ~ATTR_REVERSE;
644 if (i + 2 < l && attr[i + 1] == 5) {
646 if (BETWEEN(attr[i], 0, 255))
647 term.c.attr.fg = attr[i];
649 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
652 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
655 term.c.attr.fg = DefaultFG;
658 if (i + 2 < l && attr[i + 1] == 5) {
660 if (BETWEEN(attr[i], 0, 255))
661 term.c.attr.bg = attr[i];
663 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
666 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
669 term.c.attr.bg = DefaultBG;
672 if(BETWEEN(attr[i], 30, 37))
673 term.c.attr.fg = attr[i] - 30;
674 else if(BETWEEN(attr[i], 40, 47))
675 term.c.attr.bg = attr[i] - 40;
676 else if(BETWEEN(attr[i], 90, 97))
677 term.c.attr.fg = attr[i] - 90 + 8;
678 else if(BETWEEN(attr[i], 100, 107))
679 term.c.attr.fg = attr[i] - 100 + 8;
681 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]), csidump();
689 tsetscroll(int t, int b) {
692 LIMIT(t, 0, term.row-1);
693 LIMIT(b, 0, term.row-1);
705 switch(escseq.mode) {
708 printf("erresc: unknown csi ");
712 case '@': /* ICH -- Insert <n> blank char */
713 DEFAULT(escseq.arg[0], 1);
714 tinsertblank(escseq.arg[0]);
716 case 'A': /* CUU -- Cursor <n> Up */
718 DEFAULT(escseq.arg[0], 1);
719 tmoveto(term.c.x, term.c.y-escseq.arg[0]);
721 case 'B': /* CUD -- Cursor <n> Down */
722 DEFAULT(escseq.arg[0], 1);
723 tmoveto(term.c.x, term.c.y+escseq.arg[0]);
725 case 'C': /* CUF -- Cursor <n> Forward */
727 DEFAULT(escseq.arg[0], 1);
728 tmoveto(term.c.x+escseq.arg[0], term.c.y);
730 case 'D': /* CUB -- Cursor <n> Backward */
731 DEFAULT(escseq.arg[0], 1);
732 tmoveto(term.c.x-escseq.arg[0], term.c.y);
734 case 'E': /* CNL -- Cursor <n> Down and first col */
735 DEFAULT(escseq.arg[0], 1);
736 tmoveto(0, term.c.y+escseq.arg[0]);
738 case 'F': /* CPL -- Cursor <n> Up and first col */
739 DEFAULT(escseq.arg[0], 1);
740 tmoveto(0, term.c.y-escseq.arg[0]);
742 case 'G': /* CHA -- Move to <col> */
743 case '`': /* XXX: HPA -- same? */
744 DEFAULT(escseq.arg[0], 1);
745 tmoveto(escseq.arg[0]-1, term.c.y);
747 case 'H': /* CUP -- Move to <row> <col> */
748 case 'f': /* XXX: HVP -- same? */
749 DEFAULT(escseq.arg[0], 1);
750 DEFAULT(escseq.arg[1], 1);
751 tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
753 /* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */
754 case 'J': /* ED -- Clear screen */
755 switch(escseq.arg[0]) {
757 tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
760 tclearregion(0, 0, term.c.x, term.c.y);
763 tclearregion(0, 0, term.col-1, term.row-1);
769 case 'K': /* EL -- Clear line */
770 switch(escseq.arg[0]) {
772 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
775 tclearregion(0, term.c.y, term.c.x, term.c.y);
778 tclearregion(0, term.c.y, term.col-1, term.c.y);
782 case 'S': /* SU -- Scroll <n> line up */
783 DEFAULT(escseq.arg[0], 1);
784 tscrollup(term.top, escseq.arg[0]);
786 case 'T': /* SD -- Scroll <n> line down */
787 DEFAULT(escseq.arg[0], 1);
788 tscrolldown(term.top, escseq.arg[0]);
790 case 'L': /* IL -- Insert <n> blank lines */
791 DEFAULT(escseq.arg[0], 1);
792 tinsertblankline(escseq.arg[0]);
794 case 'l': /* RM -- Reset Mode */
796 switch(escseq.arg[0]) {
798 term.mode &= ~MODE_APPKEYPAD;
800 case 5: /* TODO: DECSCNM -- Remove reverse video */
803 term.mode &= ~MODE_WRAP;
805 case 12: /* att610 -- Stop blinking cursor (IGNORED) */
808 term.c.state |= CURSOR_HIDE;
810 case 1049: /* = 1047 and 1048 */
812 if(IS_SET(MODE_ALTSCREEN)) {
813 tclearregion(0, 0, term.col-1, term.row-1);
816 if(escseq.arg[0] == 1047)
819 tcursor(CURSOR_LOAD);
825 switch(escseq.arg[0]) {
827 term.mode &= ~MODE_INSERT;
834 case 'M': /* DL -- Delete <n> lines */
835 DEFAULT(escseq.arg[0], 1);
836 tdeleteline(escseq.arg[0]);
838 case 'X': /* ECH -- Erase <n> char */
839 DEFAULT(escseq.arg[0], 1);
840 tclearregion(term.c.x, term.c.y, term.c.x + escseq.arg[0], term.c.y);
842 case 'P': /* DCH -- Delete <n> char */
843 DEFAULT(escseq.arg[0], 1);
844 tdeletechar(escseq.arg[0]);
846 /* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation <n> tab stops */
847 case 'd': /* VPA -- Move to <row> */
848 DEFAULT(escseq.arg[0], 1);
849 tmoveto(term.c.x, escseq.arg[0]-1);
851 case 'h': /* SM -- Set terminal mode */
853 switch(escseq.arg[0]) {
855 term.mode |= MODE_APPKEYPAD;
857 case 5: /* DECSCNM -- Reverve video */
858 /* TODO: set REVERSE on the whole screen (f) */
861 term.mode |= MODE_WRAP;
863 case 12: /* att610 -- Start blinking cursor (IGNORED) */
864 /* fallthrough for xterm cvvis = CSI [ ? 12 ; 25 h */
865 if(escseq.narg > 1 && escseq.arg[1] != 25)
868 term.c.state &= ~CURSOR_HIDE;
870 case 1049: /* = 1047 and 1048 */
872 if(IS_SET(MODE_ALTSCREEN))
873 tclearregion(0, 0, term.col-1, term.row-1);
876 if(escseq.arg[0] == 1047)
879 tcursor(CURSOR_SAVE);
881 default: goto unknown;
884 switch(escseq.arg[0]) {
886 term.mode |= MODE_INSERT;
888 default: goto unknown;
892 case 'm': /* SGR -- Terminal attribute (color) */
893 tsetattr(escseq.arg, escseq.narg);
895 case 'r': /* DECSTBM -- Set Scrolling Region */
899 DEFAULT(escseq.arg[0], 1);
900 DEFAULT(escseq.arg[1], term.row);
901 tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
905 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
906 tcursor(CURSOR_SAVE);
908 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
909 tcursor(CURSOR_LOAD);
917 printf("ESC [ %s", escseq.priv ? "? " : "");
919 for(i = 0; i < escseq.narg; i++)
920 printf("%d ", escseq.arg[i]);
922 putchar(escseq.mode);
928 memset(&escseq, 0, sizeof(escseq));
933 int space = TAB - term.c.x % TAB;
934 tmoveto(term.c.x + space, term.c.y);
939 if(term.esc & ESC_START) {
940 if(term.esc & ESC_CSI) {
941 escseq.buf[escseq.len++] = c;
942 if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
944 csiparse(), csihandle();
946 /* TODO: handle other OSC */
947 } else if(term.esc & ESC_OSC) {
950 term.esc = ESC_START | ESC_TITLE;
952 } else if(term.esc & ESC_TITLE) {
953 if(c == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
955 term.title[term.titlelen] = '\0';
956 XStoreName(xw.dis, xw.win, term.title);
958 term.title[term.titlelen++] = c;
960 } else if(term.esc & ESC_ALTCHARSET) {
962 case '0': /* Line drawing crap */
963 term.c.attr.mode |= ATTR_GFX;
965 case 'B': /* Back to regular text */
966 term.c.attr.mode &= ~ATTR_GFX;
969 printf("esc unhandled charset: ESC ( %c\n", c);
981 term.esc |= ESC_ALTCHARSET;
983 case 'D': /* IND -- Linefeed */
984 if(term.c.y == term.bot)
985 tscrollup(term.top, 1);
987 tmoveto(term.c.x, term.c.y+1);
990 case 'E': /* NEL -- Next line */
994 case 'M': /* RI -- Reverse index */
995 if(term.c.y == term.top)
996 tscrolldown(term.top, 1);
998 tmoveto(term.c.x, term.c.y-1);
1001 case 'c': /* RIS -- Reset to inital state */
1005 case '=': /* DECPAM -- Application keypad */
1006 term.mode |= MODE_APPKEYPAD;
1009 case '>': /* DECPNM -- Normal keypad */
1010 term.mode &= ~MODE_APPKEYPAD;
1013 case '7': /* DECSC -- Save Cursor */
1014 tcursor(CURSOR_SAVE);
1017 case '8': /* DECRC -- Restore Cursor */
1018 tcursor(CURSOR_LOAD);
1022 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", c, isprint(c)?c:'.');
1032 tmoveto(term.c.x-1, term.c.y);
1035 tmoveto(0, term.c.y);
1046 term.esc = ESC_START;
1049 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
1052 if(term.c.x+1 < term.col)
1053 tmoveto(term.c.x+1, term.c.y);
1055 term.c.state |= CURSOR_WRAPNEXT;
1062 tputs(char *s, int len) {
1063 for(; len > 0; len--)
1068 tresize(int col, int row) {
1070 int minrow = MIN(row, term.row);
1071 int mincol = MIN(col, term.col);
1072 int slide = term.c.y - row + 1;
1074 if(col < 1 || row < 1)
1077 /* free unneeded rows */
1080 /* slide screen to keep cursor where we expect it -
1081 * tscrollup would work here, but we can optimize to
1082 * memmove because we're freeing the earlier lines */
1083 for(/* i = 0 */; i < slide; i++) {
1087 memmove(term.line, term.line + slide, row * sizeof(Line));
1088 memmove(term.alt, term.alt + slide, row * sizeof(Line));
1090 for(i += row; i < term.row; i++) {
1095 /* resize to new height */
1096 term.line = realloc(term.line, row * sizeof(Line));
1097 term.alt = realloc(term.alt, row * sizeof(Line));
1099 /* resize each row to new width, zero-pad if needed */
1100 for(i = 0; i < minrow; i++) {
1101 term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
1102 term.alt[i] = realloc(term.alt[i], col * sizeof(Glyph));
1103 memset(term.line[i] + mincol, 0, (col - mincol) * sizeof(Glyph));
1104 memset(term.alt[i] + mincol, 0, (col - mincol) * sizeof(Glyph));
1107 /* allocate any new rows */
1108 for(/* i == minrow */; i < row; i++) {
1109 term.line[i] = calloc(col, sizeof(Glyph));
1110 term.alt [i] = calloc(col, sizeof(Glyph));
1113 /* update terminal size */
1114 term.col = col, term.row = row;
1115 /* make use of the LIMIT in tmoveto */
1116 tmoveto(term.c.x, term.c.y);
1117 /* reset scrolling region */
1118 tsetscroll(0, row-1);
1125 unsigned long white = WhitePixel(xw.dis, xw.scr);
1127 for(i = 0; i < 16; i++) {
1128 if (!XAllocNamedColor(xw.dis, xw.cmap, colorname[i], &color, &color)) {
1130 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1132 dc.col[i] = color.pixel;
1135 /* same colors as xterm */
1136 for(r = 0; r < 6; r++)
1137 for(g = 0; g < 6; g++)
1138 for(b = 0; b < 6; b++) {
1139 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1140 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1141 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1142 if (!XAllocColor(xw.dis, xw.cmap, &color)) {
1144 fprintf(stderr, "Could not allocate color %d\n", i);
1146 dc.col[i] = color.pixel;
1150 for(r = 0; r < 24; r++, i++) {
1151 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1152 if (!XAllocColor(xw.dis, xw.cmap, &color)) {
1154 fprintf(stderr, "Could not allocate color %d\n", i);
1156 dc.col[i] = color.pixel;
1161 xclear(int x1, int y1, int x2, int y2) {
1162 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1163 XFillRectangle(xw.dis, xw.buf, dc.gc,
1164 x1 * xw.cw, y1 * xw.ch,
1165 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1171 XClassHint class = {TNAME, TNAME};
1172 XWMHints wm = {.flags = InputHint, .input = 1};
1174 .flags = PSize | PResizeInc | PBaseSize,
1177 .height_inc = xw.ch,
1179 .base_height = 2*BORDER,
1180 .base_width = 2*BORDER,
1182 XSetWMProperties(xw.dis, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
1187 XSetWindowAttributes attrs;
1189 if(!(xw.dis = XOpenDisplay(NULL)))
1190 die("Can't open display\n");
1191 xw.scr = XDefaultScreen(xw.dis);
1194 if(!(dc.font = XLoadQueryFont(xw.dis, FONT)) || !(dc.bfont = XLoadQueryFont(xw.dis, BOLDFONT)))
1195 die("Can't load font %s\n", dc.font ? BOLDFONT : FONT);
1197 /* XXX: Assuming same size for bold font */
1198 xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
1199 xw.ch = dc.font->ascent + dc.font->descent;
1202 xw.cmap = XDefaultColormap(xw.dis, xw.scr);
1205 /* window - default size */
1206 xw.bufh = 24 * xw.ch;
1207 xw.bufw = 80 * xw.cw;
1208 xw.h = xw.bufh + 2*BORDER;
1209 xw.w = xw.bufw + 2*BORDER;
1211 attrs.background_pixel = dc.col[DefaultBG];
1212 attrs.border_pixel = dc.col[DefaultBG];
1213 attrs.bit_gravity = NorthWestGravity;
1214 attrs.event_mask = ExposureMask | KeyPressMask
1215 | StructureNotifyMask | FocusChangeMask | PointerMotionMask
1216 | ButtonPressMask | ButtonReleaseMask;
1217 attrs.colormap = xw.cmap;
1219 xw.win = XCreateWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
1220 xw.w, xw.h, 0, XDefaultDepth(xw.dis, xw.scr), InputOutput,
1221 XDefaultVisual(xw.dis, xw.scr),
1222 CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
1225 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1227 dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
1229 XMapWindow(xw.dis, xw.win);
1231 XStoreName(xw.dis, xw.win, opt_title ? opt_title : "st");
1236 xdraws(char *s, Glyph base, int x, int y, int len) {
1237 unsigned long xfg, xbg;
1238 int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*xw.cw;
1241 if(base.mode & ATTR_REVERSE)
1242 xfg = dc.col[base.bg], xbg = dc.col[base.fg];
1244 xfg = dc.col[base.fg], xbg = dc.col[base.bg];
1246 XSetBackground(xw.dis, dc.gc, xbg);
1247 XSetForeground(xw.dis, dc.gc, xfg);
1249 if(base.mode & ATTR_GFX)
1250 for(i = 0; i < len; i++) {
1251 char c = gfx[(unsigned int)s[i] % 256];
1254 else if(s[i] > 0x5f)
1258 XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1259 XDrawImageString(xw.dis, xw.buf, dc.gc, winx, winy, s, len);
1261 if(base.mode & ATTR_UNDERLINE)
1262 XDrawLine(xw.dis, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
1267 static int oldx = 0;
1268 static int oldy = 0;
1269 Glyph g = {' ', ATTR_NULL, DefaultBG, DefaultCS, 0};
1271 LIMIT(oldx, 0, term.col-1);
1272 LIMIT(oldy, 0, term.row-1);
1274 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
1275 g.c = term.line[term.c.y][term.c.x].c;
1277 /* remove the old cursor */
1278 if(term.line[oldy][oldx].state & GLYPH_SET)
1279 xdraws(&term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1);
1281 xclear(oldx, oldy, oldx, oldy);
1283 /* draw the new one */
1284 if(!(term.c.state & CURSOR_HIDE) && xw.hasfocus) {
1285 xdraws(&g.c, g, term.c.x, term.c.y, 1);
1286 oldx = term.c.x, oldy = term.c.y;
1291 /* basic drawing routines */
1293 xdrawc(int x, int y, Glyph g) {
1294 XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
1295 XSetBackground(xw.dis, dc.gc, dc.col[g.bg]);
1296 XSetForeground(xw.dis, dc.gc, dc.col[g.fg]);
1297 XSetFont(xw.dis, dc.gc, g.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1298 XDrawImageString(xw.dis, xw.buf, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1);
1305 xclear(0, 0, term.col-1, term.row-1);
1306 for(y = 0; y < term.row; y++)
1307 for(x = 0; x < term.col; x++)
1308 if(term.line[y][x].state & GLYPH_SET)
1309 xdrawc(x, y, term.line[y][x]);
1312 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1317 /* optimized drawing routine */
1319 draw(int redraw_all) {
1322 char buf[DRAW_BUF_SIZ];
1324 xclear(0, 0, term.col-1, term.row-1);
1325 for(y = 0; y < term.row; y++) {
1326 base = term.line[y][0];
1328 for(x = 0; x < term.col; x++) {
1329 new = term.line[y][x];
1330 if(sel.bx!=-1 && new.c && selected(x, y))
1331 new.mode ^= ATTR_REVERSE;
1332 if(i > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
1333 i >= DRAW_BUF_SIZ)) {
1334 xdraws(buf, base, ox, y, i);
1337 if(new.state & GLYPH_SET) {
1346 xdraws(buf, base, ox, y, i);
1349 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1356 expose(XEvent *ev) {
1357 draw(SCREEN_REDRAW);
1361 xseturgency(int add) {
1362 XWMHints *h = XGetWMHints(xw.dis, xw.win);
1363 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
1364 XSetWMHints(xw.dis, xw.win, h);
1370 if((xw.hasfocus = ev->type == FocusIn))
1372 draw(SCREEN_UPDATE);
1378 for(i = 0; i < LEN(key); i++)
1380 return (char*)key[i].s;
1385 kpress(XEvent *ev) {
1386 XKeyEvent *e = &ev->xkey;
1394 meta = e->state & Mod1Mask;
1395 shift = e->state & ShiftMask;
1396 len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
1398 if((customkey = kmap(ksym)))
1399 ttywrite(customkey, strlen(customkey));
1401 buf[sizeof(buf)-1] = '\0';
1402 if(meta && len == 1)
1403 ttywrite("\033", 1);
1411 sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', "DACB"[ksym - XK_Left]);
1416 selpaste(), draw(1);
1419 fprintf(stderr, "errkey: %d\n", (int)ksym);
1428 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
1431 xw.w = e->xconfigure.width;
1432 xw.h = e->xconfigure.height;
1433 xw.bufw = xw.w - 2*BORDER;
1434 xw.bufh = xw.h - 2*BORDER;
1435 col = xw.bufw / xw.cw;
1436 row = xw.bufh / xw.ch;
1438 ttyresize(col, row);
1439 xw.bufh = MAX(1, xw.bufh);
1440 xw.bufw = MAX(1, xw.bufw);
1441 XFreePixmap(xw.dis, xw.buf);
1442 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1449 int xfd = XConnectionNumber(xw.dis);
1453 FD_SET(cmdfd, &rfd);
1455 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) < 0) {
1458 die("select failed: %s\n", SERRNO);
1460 if(FD_ISSET(cmdfd, &rfd)) {
1462 draw(SCREEN_UPDATE);
1464 while(XPending(xw.dis)) {
1465 XNextEvent(xw.dis, &ev);
1466 if(handler[ev.type])
1467 (handler[ev.type])(&ev);
1473 main(int argc, char *argv[]) {
1476 for(i = 1; i < argc; i++) {
1477 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
1479 if(++i < argc) opt_title = argv[i];
1482 if(++i < argc) opt_cmd = argv[i];
1489 setlocale(LC_CTYPE, "");