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 #define ESC_TITLE_SIZ 256
33 #define ESC_BUF_SIZ 256
34 #define ESC_ARG_SIZ 16
35 #define DRAW_BUF_SIZ 1024
37 #define SERRNO strerror(errno)
38 #define MIN(a, b) ((a) < (b) ? (a) : (b))
39 #define MAX(a, b) ((a) < (b) ? (b) : (a))
40 #define LEN(a) (sizeof(a) / sizeof(a[0]))
41 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
42 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
43 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
44 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
45 #define IS_SET(flag) (term.mode & (flag))
47 /* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
48 enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 };
49 enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT,
50 CURSOR_SAVE, CURSOR_LOAD };
51 enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 };
52 enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
53 enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4 };
54 enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
55 enum { SCREEN_UPDATE, SCREEN_REDRAW };
58 char c; /* character code */
59 char mode; /* attribute flags */
60 int fg; /* foreground */
61 int bg; /* background */
62 char state; /* state flags */
68 Glyph attr; /* current char attributes */
74 /* CSI Escape sequence structs */
75 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
77 char buf[ESC_BUF_SIZ]; /* raw string */
78 int len; /* raw string length */
81 int narg; /* nb of args */
85 /* Internal representation of the screen */
89 Line* line; /* screen */
90 TCursor c; /* cursor */
91 int top; /* top scroll limit */
92 int bot; /* bottom scroll limit */
93 int mode; /* terminal mode flags */
94 int esc; /* escape state flags */
95 char title[ESC_TITLE_SIZ];
99 /* Purely graphic info */
105 int w; /* window width */
106 int h; /* window height */
107 int bufw; /* pixmap width */
108 int bufh; /* pixmap height */
109 int ch; /* char height */
110 int cw; /* char width */
119 /* Drawing Context */
121 unsigned long col[256];
129 static void die(const char *errstr, ...);
130 static void draw(int);
131 static void execsh(void);
132 static void sigchld(int);
133 static void run(void);
135 static void csidump(void);
136 static void csihandle(void);
137 static void csiparse(void);
138 static void csireset(void);
140 static void tclearregion(int, int, int, int);
141 static void tcursor(int);
142 static void tdeletechar(int);
143 static void tdeleteline(int);
144 static void tinsertblank(int);
145 static void tinsertblankline(int);
146 static void tmoveto(int, int);
147 static void tnew(int, int);
148 static void tnewline(void);
149 static void tputtab(void);
150 static void tputc(char);
151 static void tputs(char*, int);
152 static void treset(void);
153 static void tresize(int, int);
154 static void tscrollup(int);
155 static void tscrolldown(int);
156 static void tsetattr(int*, int);
157 static void tsetchar(char);
158 static void tsetscroll(int, int);
160 static void ttynew(void);
161 static void ttyread(void);
162 static void ttyresize(int, int);
163 static void ttywrite(const char *, size_t);
165 static void xdraws(char *, Glyph, int, int, int);
166 static void xhints(void);
167 static void xclear(int, int, int, int);
168 static void xdrawcursor(void);
169 static void xinit(void);
170 static void xloadcols(void);
171 static void xseturgency(int);
173 static void expose(XEvent *);
174 static char* kmap(KeySym);
175 static void kpress(XEvent *);
176 static void resize(XEvent *);
177 static void focus(XEvent *);
180 static void (*handler[LASTEvent])(XEvent *) = {
183 [ConfigureNotify] = resize,
192 static CSIEscape escseq;
202 for(row = 0; row < term.row; row++) {
203 for(col = 0; col < term.col; col++) {
204 if(col == term.c.x && row == term.c.y)
207 c = term.line[row][col];
208 putchar(c.state & GLYPH_SET ? c.c : '.');
217 die(const char *errstr, ...) {
220 va_start(ap, errstr);
221 vfprintf(stderr, errstr, ap);
228 char *args[3] = {getenv("SHELL"), "-i", NULL};
229 DEFAULT(args[0], "/bin/sh"); /* if getenv() failed */
230 putenv("TERM=" TNAME);
231 execvp(args[0], args);
237 if(waitpid(pid, &stat, 0) < 0)
238 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
240 exit(WEXITSTATUS(stat));
249 /* seems to work fine on linux, openbsd and freebsd */
250 struct winsize w = {term.row, term.col, 0, 0};
251 if(openpty(&m, &s, NULL, NULL, &w) < 0)
252 die("openpty failed: %s\n", SERRNO);
254 switch(pid = fork()) {
256 die("fork failed\n");
259 setsid(); /* create a new process group */
260 dup2(s, STDIN_FILENO);
261 dup2(s, STDOUT_FILENO);
262 dup2(s, STDERR_FILENO);
263 if(ioctl(s, TIOCSCTTY, NULL) < 0)
264 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
272 signal(SIGCHLD, sigchld);
279 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
281 fprintf(stderr, "\n");
286 char buf[BUFSIZ] = {0};
289 if((ret = read(cmdfd, buf, BUFSIZ)) < 0)
290 die("Couldn't read from shell: %s\n", SERRNO);
296 ttywrite(const char *s, size_t n) {
297 if(write(cmdfd, s, n) == -1)
298 die("write error on tty: %s\n", SERRNO);
302 ttyresize(int x, int y) {
307 w.ws_xpixel = w.ws_ypixel = 0;
308 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
309 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
316 if(mode == CURSOR_SAVE)
318 else if(mode == CURSOR_LOAD)
319 term.c = c, tmoveto(c.x, c.y);
328 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
330 term.top = 0, term.bot = term.row - 1;
331 term.mode = MODE_WRAP;
332 tclearregion(0, 0, term.col-1, term.row-1);
336 tnew(int col, int row) {
337 /* set screen size */
338 term.row = row, term.col = col;
339 term.line = malloc(term.row * sizeof(Line));
340 for(row = 0 ; row < term.row; row++)
341 term.line[row] = malloc(term.col * sizeof(Glyph));
347 tscrolldown (int n) {
351 LIMIT(n, 0, term.bot-term.top+1);
353 for(i = 0; i < n; i++)
354 memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph));
356 for(i = term.bot; i >= term.top+n; i--) {
358 term.line[i] = term.line[i-n];
359 term.line[i-n] = temp;
367 LIMIT(n, 0, term.bot-term.top+1);
369 for(i = 0; i < n; i++)
370 memset(term.line[term.top+i], 0, term.col*sizeof(Glyph));
372 for(i = term.top; i <= term.bot-n; i++) {
374 term.line[i] = term.line[i+n];
375 term.line[i+n] = temp;
381 int y = term.c.y + 1;
383 tscrollup(1), y = term.bot;
390 char *p = escseq.buf;
394 escseq.priv = 1, p++;
396 while(p < escseq.buf+escseq.len) {
398 escseq.arg[escseq.narg] *= 10;
399 escseq.arg[escseq.narg] += *p++ - '0'/*, noarg = 0 */;
401 if(*p == ';' && escseq.narg+1 < ESC_ARG_SIZ)
412 tmoveto(int x, int y) {
413 LIMIT(x, 0, term.col-1);
414 LIMIT(y, 0, term.row-1);
415 term.c.state &= ~CURSOR_WRAPNEXT;
422 term.line[term.c.y][term.c.x] = term.c.attr;
423 term.line[term.c.y][term.c.x].c = c;
424 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
428 tclearregion(int x1, int y1, int x2, int y2) {
432 temp = x1, x1 = x2, x2 = temp;
434 temp = y1, y1 = y2, y2 = temp;
436 LIMIT(x1, 0, term.col-1);
437 LIMIT(x2, 0, term.col-1);
438 LIMIT(y1, 0, term.row-1);
439 LIMIT(y2, 0, term.row-1);
441 for(y = y1; y <= y2; y++)
442 memset(&term.line[y][x1], 0, sizeof(Glyph)*(x2-x1+1));
447 int src = term.c.x + n;
449 int size = term.col - src;
451 if(src >= term.col) {
452 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
455 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
456 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
460 tinsertblank(int n) {
463 int size = term.col - dst;
465 if(dst >= term.col) {
466 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
469 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
470 tclearregion(src, term.c.y, dst - 1, term.c.y);
474 tinsertblankline(int n) {
479 if(term.c.y > term.bot)
481 else if(term.c.y < term.top)
483 if(term.c.y + n >= bot) {
484 tclearregion(0, term.c.y, term.col-1, bot);
487 for(i = bot; i >= term.c.y+n; i--) {
488 /* swap deleted line <-> blanked line */
489 blank = term.line[i];
490 term.line[i] = term.line[i-n];
491 term.line[i-n] = blank;
493 memset(blank, 0, term.col * sizeof(Glyph));
503 if(term.c.y > term.bot)
505 else if(term.c.y < term.top)
507 if(term.c.y + n >= bot) {
508 tclearregion(0, term.c.y, term.col-1, bot);
511 for(i = term.c.y; i <= bot-n; i++) {
512 /* swap deleted line <-> blanked line */
513 blank = term.line[i];
514 term.line[i] = term.line[i+n];
515 term.line[i+n] = blank;
517 memset(blank, 0, term.col * sizeof(Glyph));
522 tsetattr(int *attr, int l) {
525 for(i = 0; i < l; i++) {
528 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);
529 term.c.attr.fg = DefaultFG;
530 term.c.attr.bg = DefaultBG;
533 term.c.attr.mode |= ATTR_BOLD;
536 term.c.attr.mode |= ATTR_UNDERLINE;
539 term.c.attr.mode |= ATTR_REVERSE;
542 term.c.attr.mode &= ~ATTR_BOLD;
545 term.c.attr.mode &= ~ATTR_UNDERLINE;
548 term.c.attr.mode &= ~ATTR_REVERSE;
551 if (i + 2 < l && attr[i + 1] == 5) {
553 if (BETWEEN(attr[i], 0, 255))
554 term.c.attr.fg = attr[i];
556 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
559 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
562 term.c.attr.fg = DefaultFG;
565 if (i + 2 < l && attr[i + 1] == 5) {
567 if (BETWEEN(attr[i], 0, 255))
568 term.c.attr.bg = attr[i];
570 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
573 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
576 term.c.attr.bg = DefaultBG;
579 if(BETWEEN(attr[i], 30, 37))
580 term.c.attr.fg = attr[i] - 30;
581 else if(BETWEEN(attr[i], 40, 47))
582 term.c.attr.bg = attr[i] - 40;
583 else if(BETWEEN(attr[i], 90, 97))
584 term.c.attr.fg = attr[i] - 90 + 8;
585 else if(BETWEEN(attr[i], 100, 107))
586 term.c.attr.fg = attr[i] - 100 + 8;
588 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
595 tsetscroll(int t, int b) {
598 LIMIT(t, 0, term.row-1);
599 LIMIT(b, 0, term.row-1);
611 switch(escseq.mode) {
614 printf("erresc: unknown csi ");
618 case '@': /* ICH -- Insert <n> blank char */
619 DEFAULT(escseq.arg[0], 1);
620 tinsertblank(escseq.arg[0]);
622 case 'A': /* CUU -- Cursor <n> Up */
624 DEFAULT(escseq.arg[0], 1);
625 tmoveto(term.c.x, term.c.y-escseq.arg[0]);
627 case 'B': /* CUD -- Cursor <n> Down */
628 DEFAULT(escseq.arg[0], 1);
629 tmoveto(term.c.x, term.c.y+escseq.arg[0]);
631 case 'C': /* CUF -- Cursor <n> Forward */
633 DEFAULT(escseq.arg[0], 1);
634 tmoveto(term.c.x+escseq.arg[0], term.c.y);
636 case 'D': /* CUB -- Cursor <n> Backward */
637 DEFAULT(escseq.arg[0], 1);
638 tmoveto(term.c.x-escseq.arg[0], term.c.y);
640 case 'E': /* CNL -- Cursor <n> Down and first col */
641 DEFAULT(escseq.arg[0], 1);
642 tmoveto(0, term.c.y+escseq.arg[0]);
644 case 'F': /* CPL -- Cursor <n> Up and first col */
645 DEFAULT(escseq.arg[0], 1);
646 tmoveto(0, term.c.y-escseq.arg[0]);
648 case 'G': /* CHA -- Move to <col> */
649 case '`': /* XXX: HPA -- same? */
650 DEFAULT(escseq.arg[0], 1);
651 tmoveto(escseq.arg[0]-1, term.c.y);
653 case 'H': /* CUP -- Move to <row> <col> */
654 case 'f': /* XXX: HVP -- same? */
655 DEFAULT(escseq.arg[0], 1);
656 DEFAULT(escseq.arg[1], 1);
657 tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
659 /* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */
660 case 'J': /* ED -- Clear screen */
661 switch(escseq.arg[0]) {
663 tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
666 tclearregion(0, 0, term.c.x, term.c.y);
669 tclearregion(0, 0, term.col-1, term.row-1);
671 case 3: /* XXX: erase saved lines (xterm) */
676 case 'K': /* EL -- Clear line */
677 switch(escseq.arg[0]) {
679 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
682 tclearregion(0, term.c.y, term.c.x, term.c.y);
685 tclearregion(0, term.c.y, term.col-1, term.c.y);
689 case 'S': /* SU -- Scroll <n> line up */
690 DEFAULT(escseq.arg[0], 1);
691 tscrollup(escseq.arg[0]);
693 case 'T': /* SD -- Scroll <n> line down */
694 DEFAULT(escseq.arg[0], 1);
695 tscrolldown(escseq.arg[0]);
697 case 'L': /* IL -- Insert <n> blank lines */
698 DEFAULT(escseq.arg[0], 1);
699 tinsertblankline(escseq.arg[0]);
701 case 'l': /* RM -- Reset Mode */
703 switch(escseq.arg[0]) {
705 term.mode &= ~MODE_APPKEYPAD;
708 term.mode &= ~MODE_WRAP;
710 case 12: /* att610 -- Stop blinking cursor (IGNORED) */
713 term.c.state |= CURSOR_HIDE;
715 case 1048: /* XXX: no alt. screen to erase/save */
717 tcursor(CURSOR_LOAD);
718 tclearregion(0, 0, term.col-1, term.row-1);
724 switch(escseq.arg[0]) {
726 term.mode &= ~MODE_INSERT;
733 case 'M': /* DL -- Delete <n> lines */
734 DEFAULT(escseq.arg[0], 1);
735 tdeleteline(escseq.arg[0]);
737 case 'X': /* ECH -- Erase <n> char */
738 DEFAULT(escseq.arg[0], 1);
739 tclearregion(term.c.x, term.c.y, term.c.x + escseq.arg[0], term.c.y);
741 case 'P': /* DCH -- Delete <n> char */
742 DEFAULT(escseq.arg[0], 1);
743 tdeletechar(escseq.arg[0]);
745 /* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation <n> tab stops */
746 case 'd': /* VPA -- Move to <row> */
747 DEFAULT(escseq.arg[0], 1);
748 tmoveto(term.c.x, escseq.arg[0]-1);
750 case 'h': /* SM -- Set terminal mode */
752 switch(escseq.arg[0]) {
754 term.mode |= MODE_APPKEYPAD;
757 term.mode |= MODE_WRAP;
759 case 12: /* att610 -- Start blinking cursor (IGNORED) */
762 term.c.state &= ~CURSOR_HIDE;
765 case 1049: /* XXX: no alt. screen to erase/save */
766 tcursor(CURSOR_SAVE);
767 tclearregion(0, 0, term.col-1, term.row-1);
769 default: goto unknown;
772 switch(escseq.arg[0]) {
774 term.mode |= MODE_INSERT;
776 default: goto unknown;
780 case 'm': /* SGR -- Terminal attribute (color) */
781 tsetattr(escseq.arg, escseq.narg);
783 case 'r': /* DECSTBM -- Set Scrolling Region */
787 DEFAULT(escseq.arg[0], 1);
788 DEFAULT(escseq.arg[1], term.row);
789 tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
793 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
794 tcursor(CURSOR_SAVE);
796 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
797 tcursor(CURSOR_LOAD);
805 printf("ESC [ %s", escseq.priv ? "? " : "");
807 for(i = 0; i < escseq.narg; i++)
808 printf("%d ", escseq.arg[i]);
810 putchar(escseq.mode);
816 memset(&escseq, 0, sizeof(escseq));
821 int space = TAB - term.c.x % TAB;
822 tmoveto(term.c.x + space, term.c.y);
827 if(term.esc & ESC_START) {
828 if(term.esc & ESC_CSI) {
829 escseq.buf[escseq.len++] = c;
830 if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
832 csiparse(), csihandle();
834 } else if(term.esc & ESC_OSC) {
837 term.esc = ESC_START | ESC_TITLE;
839 } else if(term.esc & ESC_TITLE) {
840 if(c == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
842 term.title[term.titlelen] = '\0';
843 XStoreName(xw.dis, xw.win, term.title);
845 term.title[term.titlelen++] = c;
847 } else if(term.esc & ESC_ALTCHARSET) {
849 case '0': /* Line drawing crap */
850 term.c.attr.mode |= ATTR_GFX;
852 case 'B': /* Back to regular text */
853 term.c.attr.mode &= ~ATTR_GFX;
856 printf("esc unhandled charset: ESC ( %c\n", c);
868 term.esc |= ESC_ALTCHARSET;
870 case 'D': /* IND -- Linefeed */
871 if(term.c.y == term.bot)
874 tmoveto(term.c.x, term.c.y+1);
877 case 'E': /* NEL -- Next line */
881 case 'M': /* RI -- Reverse index */
882 if(term.c.y == term.top)
885 tmoveto(term.c.x, term.c.y-1);
888 case 'c': /* RIS -- Reset to inital state */
892 case '=': /* DECPAM */
893 term.mode |= MODE_APPKEYPAD;
896 case '>': /* DECPNM */
897 term.mode &= ~MODE_APPKEYPAD;
901 tcursor(CURSOR_SAVE);
905 tcursor(CURSOR_LOAD);
909 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", c, isprint(c)?c:'.');
919 tmoveto(term.c.x-1, term.c.y);
922 tmoveto(0, term.c.y);
933 term.esc = ESC_START;
936 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
939 if(term.c.x+1 < term.col)
940 tmoveto(term.c.x+1, term.c.y);
942 term.c.state |= CURSOR_WRAPNEXT;
949 tputs(char *s, int len) {
950 for(; len > 0; len--)
955 tresize(int col, int row) {
957 int minrow = MIN(row, term.row);
958 int mincol = MIN(col, term.col);
960 if(col < 1 || row < 1)
963 /* free uneeded rows */
964 for(i = row; i < term.row; i++)
967 /* resize to new height */
968 term.line = realloc(term.line, row * sizeof(Line));
970 /* resize each row to new width, zero-pad if needed */
971 for(i = 0; i < minrow; i++) {
972 term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
973 memset(term.line[i] + mincol, 0, (col - mincol) * sizeof(Glyph));
976 /* allocate any new rows */
977 for(/* i == minrow */; i < row; i++)
978 term.line[i] = calloc(col, sizeof(Glyph));
980 /* update terminal size */
981 term.col = col, term.row = row;
982 /* make use of the LIMIT in tmoveto */
983 tmoveto(term.c.x, term.c.y);
984 /* reset scrolling region */
985 tsetscroll(0, row-1);
992 Colormap cmap = DefaultColormap(xw.dis, xw.scr);
993 unsigned long white = WhitePixel(xw.dis, xw.scr);
995 for(i = 0; i < 16; i++) {
996 if (!XAllocNamedColor(xw.dis, cmap, colorname[i], &color, &color)) {
998 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1000 dc.col[i] = color.pixel;
1003 /* same colors as xterm */
1004 for(r = 0; r < 6; r++)
1005 for(g = 0; g < 6; g++)
1006 for(b = 0; b < 6; b++) {
1007 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1008 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1009 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1010 if (!XAllocColor(xw.dis, cmap, &color)) {
1012 fprintf(stderr, "Could not allocate color %d\n", i);
1014 dc.col[i] = color.pixel;
1018 for(r = 0; r < 24; r++, i++) {
1019 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1020 if (!XAllocColor(xw.dis, cmap, &color)) {
1022 fprintf(stderr, "Could not allocate color %d\n", i);
1024 dc.col[i] = color.pixel;
1029 xclear(int x1, int y1, int x2, int y2) {
1030 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1031 XFillRectangle(xw.dis, xw.buf, dc.gc,
1032 x1 * xw.cw, y1 * xw.ch,
1033 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1039 XClassHint class = {TNAME, TNAME};
1040 XWMHints wm = {.flags = InputHint, .input = 1};
1042 .flags = PSize | PResizeInc | PBaseSize,
1045 .height_inc = xw.ch,
1047 .base_height = 2*BORDER,
1048 .base_width = 2*BORDER,
1050 XSetWMProperties(xw.dis, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
1055 if(!(xw.dis = XOpenDisplay(NULL)))
1056 die("Can't open display\n");
1057 xw.scr = XDefaultScreen(xw.dis);
1060 if(!(dc.font = XLoadQueryFont(xw.dis, FONT)) || !(dc.bfont = XLoadQueryFont(xw.dis, BOLDFONT)))
1061 die("Can't load font %s\n", dc.font ? BOLDFONT : FONT);
1063 /* XXX: Assuming same size for bold font */
1064 xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
1065 xw.ch = dc.font->ascent + dc.font->descent;
1071 xw.h = term.row * xw.ch + 2*BORDER;
1072 xw.w = term.col * xw.cw + 2*BORDER;
1073 xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
1077 xw.bufw = xw.w - 2*BORDER;
1078 xw.bufh = xw.h - 2*BORDER;
1079 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1081 dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
1082 XMapWindow(xw.dis, xw.win);
1084 XStoreName(xw.dis, xw.win, "st");
1089 xdraws(char *s, Glyph base, int x, int y, int len) {
1090 unsigned long xfg, xbg;
1091 int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*xw.cw;
1094 if(base.mode & ATTR_REVERSE)
1095 xfg = dc.col[base.bg], xbg = dc.col[base.fg];
1097 xfg = dc.col[base.fg], xbg = dc.col[base.bg];
1099 XSetBackground(xw.dis, dc.gc, xbg);
1100 XSetForeground(xw.dis, dc.gc, xfg);
1102 if(base.mode & ATTR_GFX)
1103 for(i = 0; i < len; i++)
1104 s[i] = gfx[(int)s[i]];
1106 XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1107 XDrawImageString(xw.dis, xw.buf, dc.gc, winx, winy, s, len);
1109 if(base.mode & ATTR_UNDERLINE)
1110 XDrawLine(xw.dis, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
1115 static int oldx = 0;
1116 static int oldy = 0;
1117 Glyph g = {' ', ATTR_NULL, DefaultBG, DefaultCS, 0};
1119 LIMIT(oldx, 0, term.col-1);
1120 LIMIT(oldy, 0, term.row-1);
1122 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
1123 g.c = term.line[term.c.y][term.c.x].c;
1125 /* remove the old cursor */
1126 if(term.line[oldy][oldx].state & GLYPH_SET)
1127 xdraws(&term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1);
1129 xclear(oldx, oldy, oldx, oldy);
1131 /* draw the new one */
1132 if(!(term.c.state & CURSOR_HIDE)) {
1133 xdraws(&g.c, g, term.c.x, term.c.y, 1);
1134 oldx = term.c.x, oldy = term.c.y;
1139 /* basic drawing routines */
1141 xdrawc(int x, int y, Glyph g) {
1142 XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
1143 XSetBackground(xw.dis, dc.gc, dc.col[g.bg]);
1144 XSetForeground(xw.dis, dc.gc, dc.col[g.fg]);
1145 XSetFont(xw.dis, dc.gc, g.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1146 XDrawImageString(xw.dis, xw.buf, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1);
1153 xclear(0, 0, term.col-1, term.row-1);
1154 for(y = 0; y < term.row; y++)
1155 for(x = 0; x < term.col; x++)
1156 if(term.line[y][x].state & GLYPH_SET)
1157 xdrawc(x, y, term.line[y][x]);
1160 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1165 /* optimized drawing routine */
1167 draw(int redraw_all) {
1170 char buf[DRAW_BUF_SIZ];
1172 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1173 XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.bufw, xw.bufh);
1174 for(y = 0; y < term.row; y++) {
1175 base = term.line[y][0];
1177 for(x = 0; x < term.col; x++) {
1178 new = term.line[y][x];
1179 if(i > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
1180 i >= DRAW_BUF_SIZ)) {
1181 xdraws(buf, base, ox, y, i);
1184 if(new.state & GLYPH_SET) {
1193 xdraws(buf, base, ox, y, i);
1196 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1203 expose(XEvent *ev) {
1204 draw(SCREEN_REDRAW);
1208 xseturgency(int add) {
1209 XWMHints *h = XGetWMHints(xw.dis, xw.win);
1210 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
1211 XSetWMHints(xw.dis, xw.win, h);
1217 if((xw.hasfocus = ev->type == FocusIn))
1224 for(i = 0; i < LEN(key); i++)
1226 return (char*)key[i].s;
1231 kpress(XEvent *ev) {
1232 XKeyEvent *e = &ev->xkey;
1240 meta = e->state & Mod1Mask;
1241 shift = e->state & ShiftMask;
1242 len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
1244 if((customkey = kmap(ksym)))
1245 ttywrite(customkey, strlen(customkey));
1247 buf[sizeof(buf)-1] = '\0';
1248 if(meta && len == 1)
1249 ttywrite("\033", 1);
1257 sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', "DACB"[ksym - XK_Left]);
1262 draw(1), puts("draw!")/* XXX: paste X clipboard */;
1265 fprintf(stderr, "errkey: %d\n", (int)ksym);
1274 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
1277 xw.w = e->xconfigure.width;
1278 xw.h = e->xconfigure.height;
1279 xw.bufw = xw.w - 2*BORDER;
1280 xw.bufh = xw.h - 2*BORDER;
1281 col = xw.bufw / xw.cw;
1282 row = xw.bufh / xw.ch;
1284 ttyresize(col, row);
1285 XFreePixmap(xw.dis, xw.buf);
1286 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1287 draw(SCREEN_REDRAW);
1294 int xfd = XConnectionNumber(xw.dis);
1295 long mask = ExposureMask | KeyPressMask | StructureNotifyMask | FocusChangeMask;
1297 XSelectInput(xw.dis, xw.win, mask);
1298 XResizeWindow(xw.dis, xw.win, xw.w, xw.h); /* XXX: fix resize bug in wmii (?) */
1302 FD_SET(cmdfd, &rfd);
1304 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) < 0) {
1307 die("select failed: %s\n", SERRNO);
1309 if(FD_ISSET(cmdfd, &rfd)) {
1311 draw(SCREEN_UPDATE);
1313 while(XPending(xw.dis)) {
1314 XNextEvent(xw.dis, &ev);
1315 if(handler[ev.type])
1316 (handler[ev.type])(&ev);
1322 main(int argc, char *argv[]) {
1323 if(argc == 2 && !strncmp("-v", argv[1], 3))
1324 die("st-" VERSION ", (c) 2010 st engineers\n");
1326 die("usage: st [-v]\n");
1327 setlocale(LC_CTYPE, "");