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>
24 #define ESC_TITLE_SIZ 256
25 #define ESC_BUF_SIZ 256
26 #define ESC_ARG_SIZ 16
27 #define DRAW_BUF_SIZ 1024
29 #define SERRNO strerror(errno)
30 #define MIN(a, b) ((a) < (b) ? (a) : (b))
31 #define MAX(a, b) ((a) < (b) ? (b) : (a))
32 #define LEN(a) (sizeof(a) / sizeof(a[0]))
33 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
34 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
35 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
36 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
37 #define IS_SET(flag) (term.mode & flag)
39 /* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
40 enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 };
41 enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT, CURSOR_HIDE, CURSOR_DRAW,
42 CURSOR_SAVE, CURSOR_LOAD };
43 enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
44 enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4 };
45 enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
46 enum { SCREEN_UPDATE, SCREEN_REDRAW };
49 char c; /* character code */
50 char mode; /* attribute flags */
51 int fg; /* foreground */
52 int bg; /* background */
53 char state; /* state flags */
59 Glyph attr; /* current char attributes */
64 /* CSI Escape sequence structs */
65 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
67 char buf[ESC_BUF_SIZ]; /* raw string */
68 int len; /* raw string length */
71 int narg; /* nb of args */
75 /* Internal representation of the screen */
79 Line* line; /* screen */
80 TCursor c; /* cursor */
82 int top; /* top scroll limit */
83 int bot; /* bottom scroll limit */
84 int mode; /* terminal mode flags */
85 int esc; /* escape state flags */
86 char title[ESC_TITLE_SIZ];
90 /* Purely graphic info */
96 int w; /* window width */
97 int h; /* window height */
98 int bufw; /* pixmap width */
99 int bufh; /* pixmap height */
100 int ch; /* char height */
101 int cw; /* char width */
109 /* Drawing Context */
111 unsigned long col[256];
119 static void die(const char *errstr, ...);
120 static void draw(int);
121 static void execsh(void);
122 static void sigchld(int);
123 static void run(void);
125 static void csidump(void);
126 static void csihandle(void);
127 static void csiparse(void);
128 static void csireset(void);
130 static void tclearregion(int, int, int, int);
131 static void tcursor(int);
132 static void tdeletechar(int);
133 static void tdeleteline(int);
134 static void tinsertblank(int);
135 static void tinsertblankline(int);
136 static void tmoveto(int, int);
137 static void tnew(int, int);
138 static void tnewline(void);
139 static void tputtab(void);
140 static void tputc(char);
141 static void tputs(char*, int);
142 static void treset(void);
143 static void tresize(int, int);
144 static void tscroll(void);
145 static void tscrollup(int);
146 static void tscrolldown(int);
147 static void tsetattr(int*, int);
148 static void tsetchar(char);
149 static void tsetscroll(int, int);
151 static void ttynew(void);
152 static void ttyread(void);
153 static void ttyresize(int, int);
154 static void ttywrite(const char *, size_t);
156 static void xbell(void);
157 static void xdraws(char *, Glyph, int, int, int);
158 static void xhints(void);
159 static void xclear(int, int, int, int);
160 static void xcursor(int);
161 static void xinit(void);
162 static void xloadcols(void);
164 static void expose(XEvent *);
165 static char* kmap(KeySym);
166 static void kpress(XEvent *);
167 static void resize(XEvent *);
169 static void (*handler[LASTEvent])(XEvent *) = {
172 [ConfigureNotify] = resize
179 static CSIEscape escseq;
190 for(row = 0; row < term.row; row++) {
191 for(col = 0; col < term.col; col++) {
192 if(col == term.c.x && row == term.c.y)
195 c = term.line[row][col];
196 putchar(c.state & GLYPH_SET ? c.c : '.');
205 die(const char *errstr, ...) {
208 va_start(ap, errstr);
209 vfprintf(stderr, errstr, ap);
216 char *args[3] = {getenv("SHELL"), "-i", NULL};
217 DEFAULT(args[0], "/bin/sh"); /* default shell if getenv() failed */
218 putenv("TERM=" TNAME);
219 execvp(args[0], args);
223 xbell(void) { /* visual bell */
224 XRectangle r = { BORDER, BORDER, xw.bufw, xw.bufh };
225 XSetForeground(xw.dis, dc.gc, dc.col[BellCol]);
226 XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);
234 if(waitpid(pid, &stat, 0) < 0)
235 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
237 exit(WEXITSTATUS(stat));
247 if((m = posix_openpt(O_RDWR | O_NOCTTY)) < 0)
248 die("openpt failed: %s\n", SERRNO);
250 die("grantpt failed: %s\n", SERRNO);
252 die("unlockpt failed: %s\n", SERRNO);
253 if(!(pts = ptsname(m)))
254 die("ptsname failed: %s\n", SERRNO);
255 if((s = open(pts, O_RDWR | O_NOCTTY)) < 0)
256 die("Couldn't open slave: %s\n", SERRNO);
257 fcntl(s, F_SETFL, O_NDELAY);
258 switch(pid = fork()) {
260 die("fork failed\n");
263 setsid(); /* create a new process group */
264 dup2(s, STDIN_FILENO);
265 dup2(s, STDOUT_FILENO);
266 dup2(s, STDERR_FILENO);
267 if(ioctl(s, TIOCSCTTY, NULL) < 0)
268 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
276 signal(SIGCHLD, sigchld);
283 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
285 fprintf(stderr, "\n");
290 char buf[BUFSIZ] = {0};
293 if((ret = read(cmdfd, buf, BUFSIZ)) < 0)
294 die("Couldn't read from shell: %s\n", SERRNO);
300 ttywrite(const char *s, size_t n) {
301 if(write(cmdfd, s, n) == -1)
302 die("write error on tty: %s\n", SERRNO);
306 ttyresize(int x, int y) {
311 w.ws_xpixel = w.ws_ypixel = 0;
312 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
313 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
320 if(mode == CURSOR_SAVE)
322 else if(mode == CURSOR_LOAD)
323 term.c = c, tmoveto(c.x, c.y);
328 term.c.attr.mode = ATTR_NULL;
329 term.c.attr.fg = DefaultFG;
330 term.c.attr.bg = DefaultBG;
331 term.c.x = term.c.y = 0;
333 term.top = 0, term.bot = term.row - 1;
334 term.mode = MODE_WRAP;
335 tclearregion(0, 0, term.col-1, term.row-1);
339 tnew(int col, int row) {
341 term.row = row, term.col = col;
342 term.top = 0, term.bot = term.row - 1;
344 term.mode = MODE_WRAP;
346 term.c.attr.mode = ATTR_NULL;
347 term.c.attr.fg = DefaultFG;
348 term.c.attr.bg = DefaultBG;
349 term.c.x = term.c.y = 0;
351 /* allocate screen */
352 term.line = calloc(term.row, sizeof(Line));
353 for(row = 0 ; row < term.row; row++)
354 term.line[row] = calloc(term.col, sizeof(Glyph));
357 /* TODO: Replace with scrollup/scolldown */
360 Line temp = term.line[term.top];
363 for(i = term.top; i < term.bot; i++)
364 term.line[i] = term.line[i+1];
365 memset(temp, 0, sizeof(Glyph) * term.col);
366 term.line[term.bot] = temp;
370 tscrolldown (int n) {
374 LIMIT(n, 0, term.bot-term.top+1);
376 for(i = 0; i < n; i++)
377 memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph));
379 for(i = term.bot; i >= term.top+n; i--) {
381 term.line[i] = term.line[i-n];
382 term.line[i-n] = temp;
390 LIMIT(n, 0, term.bot-term.top+1);
392 for(i = 0; i < n; i++)
393 memset(term.line[term.top+i], 0, term.col*sizeof(Glyph));
395 for(i = term.top; i <= term.bot-n; i++) {
397 term.line[i] = term.line[i+n];
398 term.line[i+n] = temp;
404 int y = term.c.y + 1;
406 tscroll(), y = term.bot;
413 char *p = escseq.buf;
417 escseq.priv = 1, p++;
419 while(p < escseq.buf+escseq.len) {
421 escseq.arg[escseq.narg] *= 10;
422 escseq.arg[escseq.narg] += *p++ - '0'/*, noarg = 0 */;
424 if(*p == ';' && escseq.narg+1 < ESC_ARG_SIZ)
435 tmoveto(int x, int y) {
436 term.c.x = x < 0 ? 0 : x >= term.col ? term.col-1 : x;
437 term.c.y = y < 0 ? 0 : y >= term.row ? term.row-1 : y;
442 term.line[term.c.y][term.c.x] = term.c.attr;
443 term.line[term.c.y][term.c.x].c = c;
444 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
448 tclearregion(int x1, int y1, int x2, int y2) {
452 temp = x1, x1 = x2, x2 = temp;
454 temp = y1, y1 = y2, y2 = temp;
456 LIMIT(x1, 0, term.col-1);
457 LIMIT(x2, 0, term.col-1);
458 LIMIT(y1, 0, term.row-1);
459 LIMIT(y2, 0, term.row-1);
461 for(y = y1; y <= y2; y++)
462 memset(&term.line[y][x1], 0, sizeof(Glyph)*(x2-x1+1));
467 int src = term.c.x + n;
469 int size = term.col - src;
471 if(src >= term.col) {
472 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
475 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
476 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
480 tinsertblank(int n) {
483 int size = term.col - dst;
485 if(dst >= term.col) {
486 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
489 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
490 tclearregion(src, term.c.y, dst - 1, term.c.y);
494 tinsertblankline(int n) {
499 if(term.c.y > term.bot)
501 else if(term.c.y < term.top)
503 if(term.c.y + n >= bot) {
504 tclearregion(0, term.c.y, term.col-1, bot);
507 for(i = bot; i >= term.c.y+n; i--) {
508 /* swap deleted line <-> blanked line */
509 blank = term.line[i];
510 term.line[i] = term.line[i-n];
511 term.line[i-n] = blank;
513 memset(blank, 0, term.col * sizeof(Glyph));
523 if(term.c.y > term.bot)
525 else if(term.c.y < term.top)
527 if(term.c.y + n >= bot) {
528 tclearregion(0, term.c.y, term.col-1, bot);
531 for(i = term.c.y; i <= bot-n; i++) {
532 /* swap deleted line <-> blanked line */
533 blank = term.line[i];
534 term.line[i] = term.line[i+n];
535 term.line[i+n] = blank;
537 memset(blank, 0, term.col * sizeof(Glyph));
542 tsetattr(int *attr, int l) {
545 for(i = 0; i < l; i++) {
548 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);
549 term.c.attr.fg = DefaultFG;
550 term.c.attr.bg = DefaultBG;
553 term.c.attr.mode |= ATTR_BOLD;
556 term.c.attr.mode |= ATTR_UNDERLINE;
559 term.c.attr.mode |= ATTR_REVERSE;
562 term.c.attr.mode &= ~ATTR_BOLD;
565 term.c.attr.mode &= ~ATTR_UNDERLINE;
568 term.c.attr.mode &= ~ATTR_REVERSE;
571 if (i + 2 < l && attr[i + 1] == 5) {
573 if (BETWEEN(attr[i], 0, 255))
574 term.c.attr.fg = attr[i];
576 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
579 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
582 term.c.attr.fg = DefaultFG;
585 if (i + 2 < l && attr[i + 1] == 5) {
587 if (BETWEEN(attr[i], 0, 255))
588 term.c.attr.bg = attr[i];
590 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
593 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
596 term.c.attr.bg = DefaultBG;
599 if(BETWEEN(attr[i], 30, 37))
600 term.c.attr.fg = attr[i] - 30;
601 else if(BETWEEN(attr[i], 40, 47))
602 term.c.attr.bg = attr[i] - 40;
603 else if(BETWEEN(attr[i], 90, 97))
604 term.c.attr.fg = attr[i] - 90 + 8;
605 else if(BETWEEN(attr[i], 100, 107))
606 term.c.attr.fg = attr[i] - 100 + 8;
608 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
615 tsetscroll(int t, int b) {
618 LIMIT(t, 0, term.row-1);
619 LIMIT(b, 0, term.row-1);
631 switch(escseq.mode) {
634 printf("erresc: unknown csi ");
638 case '@': /* ICH -- Insert <n> blank char */
639 DEFAULT(escseq.arg[0], 1);
640 tinsertblank(escseq.arg[0]);
642 case 'A': /* CUU -- Cursor <n> Up */
644 DEFAULT(escseq.arg[0], 1);
645 tmoveto(term.c.x, term.c.y-escseq.arg[0]);
647 case 'B': /* CUD -- Cursor <n> Down */
648 DEFAULT(escseq.arg[0], 1);
649 tmoveto(term.c.x, term.c.y+escseq.arg[0]);
651 case 'C': /* CUF -- Cursor <n> Forward */
653 DEFAULT(escseq.arg[0], 1);
654 tmoveto(term.c.x+escseq.arg[0], term.c.y);
656 case 'D': /* CUB -- Cursor <n> Backward */
657 DEFAULT(escseq.arg[0], 1);
658 tmoveto(term.c.x-escseq.arg[0], term.c.y);
660 case 'E': /* CNL -- Cursor <n> Down and first col */
661 DEFAULT(escseq.arg[0], 1);
662 tmoveto(0, term.c.y+escseq.arg[0]);
664 case 'F': /* CPL -- Cursor <n> Up and first col */
665 DEFAULT(escseq.arg[0], 1);
666 tmoveto(0, term.c.y-escseq.arg[0]);
668 case 'G': /* CHA -- Move to <col> */
669 case '`': /* XXX: HPA -- same? */
670 DEFAULT(escseq.arg[0], 1);
671 tmoveto(escseq.arg[0]-1, term.c.y);
673 case 'H': /* CUP -- Move to <row> <col> */
674 case 'f': /* XXX: HVP -- same? */
675 DEFAULT(escseq.arg[0], 1);
676 DEFAULT(escseq.arg[1], 1);
677 tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
679 /* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */
680 case 'J': /* ED -- Clear screen */
681 switch(escseq.arg[0]) {
683 tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
686 tclearregion(0, 0, term.c.x, term.c.y);
689 tclearregion(0, 0, term.col-1, term.row-1);
691 case 3: /* XXX: erase saved lines (xterm) */
696 case 'K': /* EL -- Clear line */
697 switch(escseq.arg[0]) {
699 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
702 tclearregion(0, term.c.y, term.c.x, term.c.y);
705 tclearregion(0, term.c.y, term.col-1, term.c.y);
709 case 'S': /* SU -- Scroll <n> line up */
710 DEFAULT(escseq.arg[0], 1);
711 tscrollup(escseq.arg[0]);
713 case 'T': /* SD -- Scroll <n> line down */
714 DEFAULT(escseq.arg[0], 1);
715 tscrolldown(escseq.arg[0]);
717 case 'L': /* IL -- Insert <n> blank lines */
718 DEFAULT(escseq.arg[0], 1);
719 tinsertblankline(escseq.arg[0]);
721 case 'l': /* RM -- Reset Mode */
723 switch(escseq.arg[0]) {
725 term.mode &= ~MODE_APPKEYPAD;
728 term.mode &= ~MODE_WRAP;
730 case 12: /* att610 -- Stop blinking cursor (IGNORED) */
735 case 1048: /* XXX: no alt. screen to erase/save */
737 tcursor(CURSOR_LOAD);
738 tclearregion(0, 0, term.col-1, term.row-1);
744 switch(escseq.arg[0]) {
746 term.mode &= ~MODE_INSERT;
753 case 'M': /* DL -- Delete <n> lines */
754 DEFAULT(escseq.arg[0], 1);
755 tdeleteline(escseq.arg[0]);
757 case 'X': /* ECH -- Erase <n> char */
758 DEFAULT(escseq.arg[0], 1);
759 tclearregion(term.c.x, term.c.y, term.c.x + escseq.arg[0], term.c.y);
761 case 'P': /* DCH -- Delete <n> char */
762 DEFAULT(escseq.arg[0], 1);
763 tdeletechar(escseq.arg[0]);
765 /* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation <n> tab stops */
766 case 'd': /* VPA -- Move to <row> */
767 DEFAULT(escseq.arg[0], 1);
768 tmoveto(term.c.x, escseq.arg[0]-1);
770 case 'h': /* SM -- Set terminal mode */
772 switch(escseq.arg[0]) {
774 term.mode |= MODE_APPKEYPAD;
777 term.mode |= MODE_WRAP;
779 case 12: /* att610 -- Start blinking cursor (IGNORED) */
785 case 1049: /* XXX: no alt. screen to erase/save */
786 tcursor(CURSOR_SAVE);
787 tclearregion(0, 0, term.col-1, term.row-1);
789 default: goto unknown;
792 switch(escseq.arg[0]) {
794 term.mode |= MODE_INSERT;
796 default: goto unknown;
800 case 'm': /* SGR -- Terminal attribute (color) */
801 tsetattr(escseq.arg, escseq.narg);
803 case 'r': /* DECSTBM -- Set Scrolling Region */
807 DEFAULT(escseq.arg[0], 1);
808 DEFAULT(escseq.arg[1], term.row);
809 tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
812 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
813 tcursor(CURSOR_SAVE);
815 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
816 tcursor(CURSOR_LOAD);
824 printf("ESC [ %s", escseq.priv ? "? " : "");
826 for(i = 0; i < escseq.narg; i++)
827 printf("%d ", escseq.arg[i]);
829 putchar(escseq.mode);
835 memset(&escseq, 0, sizeof(escseq));
840 int space = TAB - term.c.x % TAB;
841 tmoveto(term.c.x + space, term.c.y);
846 if(term.esc & ESC_START) {
847 if(term.esc & ESC_CSI) {
848 escseq.buf[escseq.len++] = c;
849 if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
851 csiparse(), csihandle();
853 } else if(term.esc & ESC_OSC) {
856 term.esc = ESC_START | ESC_TITLE;
858 } else if(term.esc & ESC_TITLE) {
859 if(c == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
861 term.title[term.titlelen] = '\0';
862 XStoreName(xw.dis, xw.win, term.title);
864 term.title[term.titlelen++] = c;
866 } else if(term.esc & ESC_ALTCHARSET) {
868 case '0': /* Line drawing crap */
869 term.c.attr.mode |= ATTR_GFX;
871 case 'B': /* Back to regular text */
872 term.c.attr.mode &= ~ATTR_GFX;
875 printf("esc unhandled charset: ESC ( %c\n", c);
887 term.esc |= ESC_ALTCHARSET;
890 tmoveto(term.c.x, term.c.y-1);
894 tmoveto(term.c.x, term.c.y+1);
898 tmoveto(term.c.x+1, term.c.y);
901 case 'D': /* XXX: CUP (VT100) or IND (VT52) ... */
902 tmoveto(term.c.x-1, term.c.y);
905 case 'E': /* NEL -- Next line */
909 case 'M': /* RI -- Reverse index */
910 if(term.c.y == term.top)
913 tmoveto(term.c.x, term.c.y-1);
916 case 'c': /* RIS -- Reset to inital state */
920 case '=': /* DECPAM */
921 term.mode |= MODE_APPKEYPAD;
924 case '>': /* DECPNM */
925 term.mode &= ~MODE_APPKEYPAD;
929 tcursor(CURSOR_SAVE);
933 tcursor(CURSOR_LOAD);
937 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", c, isprint(c)?c:'.');
947 tmoveto(term.c.x-1, term.c.y);
950 tmoveto(0, term.c.y);
960 term.esc = ESC_START;
964 if(term.c.x+1 < term.col) {
965 tmoveto(term.c.x+1, term.c.y);
966 } else if(IS_SET(MODE_WRAP))
974 tputs(char *s, int len) {
975 for(; len > 0; len--)
980 tresize(int col, int row) {
982 int minrow = MIN(row, term.row);
983 int mincol = MIN(col, term.col);
985 if(col < 1 || row < 1)
988 /* free uneeded rows */
989 for(i = row; i < term.row; i++)
992 /* resize to new height */
993 term.line = realloc(term.line, row * sizeof(Line));
995 /* resize each row to new width, zero-pad if needed */
996 for(i = 0; i < minrow; i++) {
997 term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
998 memset(term.line[i] + mincol, 0, (col - mincol) * sizeof(Glyph));
1001 /* allocate any new rows */
1002 for(/* i == minrow */; i < row; i++)
1003 term.line[i] = calloc(col, sizeof(Glyph));
1005 LIMIT(term.c.x, 0, col-1);
1006 LIMIT(term.c.y, 0, row-1);
1007 LIMIT(term.top, 0, row-1);
1008 LIMIT(term.bot, 0, row-1);
1011 term.col = col, term.row = row;
1018 Colormap cmap = DefaultColormap(xw.dis, xw.scr);
1019 unsigned long white = WhitePixel(xw.dis, xw.scr);
1021 for(i = 0; i < 16; i++) {
1022 if (!XAllocNamedColor(xw.dis, cmap, colorname[i], &color, &color)) {
1024 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1026 dc.col[i] = color.pixel;
1029 /* same colors as xterm */
1030 for(r = 0; r < 6; r++)
1031 for(g = 0; g < 6; g++)
1032 for(b = 0; b < 6; b++) {
1033 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1034 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1035 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1036 if (!XAllocColor(xw.dis, cmap, &color)) {
1038 fprintf(stderr, "Could not allocate color %d\n", i);
1040 dc.col[i] = color.pixel;
1044 for(r = 0; r < 24; r++, i++) {
1045 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1046 if (!XAllocColor(xw.dis, cmap, &color)) {
1048 fprintf(stderr, "Could not allocate color %d\n", i);
1050 dc.col[i] = color.pixel;
1055 xclear(int x1, int y1, int x2, int y2) {
1056 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1057 XFillRectangle(xw.dis, xw.buf, dc.gc,
1058 x1 * xw.cw, y1 * xw.ch,
1059 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1065 XClassHint class = {TNAME, TNAME};
1066 XWMHints wm = {.flags = InputHint, .input = 1};
1068 .flags = PSize | PResizeInc | PBaseSize,
1071 .height_inc = xw.ch,
1073 .base_height = 2*BORDER,
1074 .base_width = 2*BORDER,
1076 XSetWMProperties(xw.dis, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
1081 xw.dis = XOpenDisplay(NULL);
1082 xw.scr = XDefaultScreen(xw.dis);
1084 die("Can't open display\n");
1087 if(!(dc.font = XLoadQueryFont(xw.dis, FONT)) || !(dc.bfont = XLoadQueryFont(xw.dis, BOLDFONT)))
1088 die("Can't load font %s\n", dc.font ? BOLDFONT : FONT);
1090 /* XXX: Assuming same size for bold font */
1091 xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
1092 xw.ch = dc.font->ascent + dc.font->descent;
1097 term.c.attr.fg = DefaultFG;
1098 term.c.attr.bg = DefaultBG;
1099 term.c.attr.mode = ATTR_NULL;
1101 xw.h = term.row * xw.ch + 2*BORDER;
1102 xw.w = term.col * xw.cw + 2*BORDER;
1103 xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
1107 xw.bufw = xw.w - 2*BORDER;
1108 xw.bufh = xw.h - 2*BORDER;
1109 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1111 dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
1112 XMapWindow(xw.dis, xw.win);
1114 XStoreName(xw.dis, xw.win, "st");
1119 xdraws(char *s, Glyph base, int x, int y, int len) {
1120 unsigned long xfg, xbg;
1121 int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*xw.cw;
1124 if(base.mode & ATTR_REVERSE)
1125 xfg = dc.col[base.bg], xbg = dc.col[base.fg];
1127 xfg = dc.col[base.fg], xbg = dc.col[base.bg];
1129 XSetBackground(xw.dis, dc.gc, xbg);
1130 XSetForeground(xw.dis, dc.gc, xfg);
1132 if(base.mode & ATTR_GFX)
1133 for(i = 0; i < len; i++)
1134 s[i] = gfx[(int)s[i]];
1136 XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1137 XDrawImageString(xw.dis, xw.buf, dc.gc, winx, winy, s, len);
1139 if(base.mode & ATTR_UNDERLINE)
1140 XDrawLine(xw.dis, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
1145 static int oldx = 0;
1146 static int oldy = 0;
1147 Glyph g = {' ', ATTR_NULL, DefaultBG, DefaultCS, 0};
1149 LIMIT(oldx, 0, term.col-1);
1150 LIMIT(oldy, 0, term.row-1);
1152 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
1153 g.c = term.line[term.c.y][term.c.x].c;
1155 /* remove the old cursor */
1156 if(term.line[oldy][oldx].state & GLYPH_SET)
1157 xdraws(&term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1);
1159 xclear(oldx, oldy, oldx, oldy);
1161 /* draw the new one */
1162 if(mode == CURSOR_DRAW) {
1163 xdraws(&g.c, g, term.c.x, term.c.y, 1);
1164 oldx = term.c.x, oldy = term.c.y;
1169 /* basic drawing routines */
1171 xdrawc(int x, int y, Glyph g) {
1172 XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
1173 XSetBackground(xw.dis, dc.gc, dc.col[g.bg]);
1174 XSetForeground(xw.dis, dc.gc, dc.col[g.fg]);
1175 XSetFont(xw.dis, dc.gc, g.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1176 XDrawImageString(xw.dis, xw.buf, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1);
1183 xclear(0, 0, term.col-1, term.row-1);
1184 for(y = 0; y < term.row; y++)
1185 for(x = 0; x < term.col; x++)
1186 if(term.line[y][x].state & GLYPH_SET)
1187 xdrawc(x, y, term.line[y][x]);
1190 xcursor(CURSOR_DRAW);
1191 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1196 /* optimized drawing routine */
1198 draw(int redraw_all) {
1201 char buf[DRAW_BUF_SIZ];
1203 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1204 XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
1205 for(y = 0; y < term.row; y++) {
1206 base = term.line[y][0];
1208 for(x = 0; x < term.col; x++) {
1209 new = term.line[y][x];
1210 if(!ATTRCMP(base, new) && i < DRAW_BUF_SIZ)
1213 xdraws(buf, base, ox, y, i);
1220 xdraws(buf, base, ox, y, i);
1222 xcursor(term.hidec ? CURSOR_HIDE : CURSOR_DRAW);
1223 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1230 expose(XEvent *ev) {
1231 draw(SCREEN_REDRAW);
1237 for(i = 0; i < LEN(key); i++)
1239 return (char*)key[i].s;
1244 kpress(XEvent *ev) {
1245 XKeyEvent *e = &ev->xkey;
1253 meta = e->state & Mod1Mask;
1254 shift = e->state & ShiftMask;
1255 len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
1257 if((customkey = kmap(ksym)))
1258 ttywrite(customkey, strlen(customkey));
1260 buf[sizeof(buf)-1] = '\0';
1261 if(meta && len == 1)
1262 ttywrite("\033", 1);
1270 sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', "DACB"[ksym - XK_Left]);
1275 draw(1), puts("draw!")/* XXX: paste X clipboard */;
1278 fprintf(stderr, "errkey: %d\n", (int)ksym);
1287 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
1290 xw.w = e->xconfigure.width;
1291 xw.h = e->xconfigure.height;
1292 xw.bufw = xw.w - 2*BORDER;
1293 xw.bufh = xw.h - 2*BORDER;
1294 col = xw.bufw / xw.cw;
1295 row = xw.bufh / xw.ch;
1297 ttyresize(col, row);
1298 XFreePixmap(xw.dis, xw.buf);
1299 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1300 draw(SCREEN_REDRAW);
1307 int xfd = XConnectionNumber(xw.dis);
1310 XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask | StructureNotifyMask);
1311 XResizeWindow(xw.dis, xw.win, xw.w, xw.h); /* XXX: fix resize bug in wmii (?) */
1315 FD_SET(cmdfd, &rfd);
1317 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) == -1) {
1320 die("select failed: %s\n", SERRNO);
1322 if(FD_ISSET(cmdfd, &rfd)) {
1324 draw(SCREEN_UPDATE);
1326 while(XPending(xw.dis)) {
1327 XNextEvent(xw.dis, &ev);
1328 if(handler[ev.type])
1329 (handler[ev.type])(&ev);
1335 main(int argc, char *argv[]) {
1336 if(argc == 2 && !strncmp("-v", argv[1], 3))
1337 die("st-" VERSION ", (c) 2010 st engineers\n");
1339 die("usage: st [-v]\n");
1340 setlocale(LC_CTYPE, "");