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>
23 #define TNAME "st-256color"
26 #define ESC_TITLE_SIZ 256
27 #define ESC_BUF_SIZ 256
28 #define ESC_ARG_SIZ 16
29 #define DRAW_BUF_SIZ 1024
31 #define SERRNO strerror(errno)
32 #define MIN(a, b) ((a) < (b) ? (a) : (b))
33 #define MAX(a, b) ((a) < (b) ? (b) : (a))
34 #define LEN(a) (sizeof(a) / sizeof(a[0]))
35 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
36 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
37 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
38 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
40 /* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
41 enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 };
42 enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT, CURSOR_HIDE, CURSOR_DRAW,
43 CURSOR_SAVE, CURSOR_LOAD };
44 enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
45 enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4 };
46 enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
47 enum { SCREEN_UPDATE, SCREEN_REDRAW };
50 char c; /* character code */
51 char mode; /* attribute flags */
52 int fg; /* foreground */
53 int bg; /* background */
54 char state; /* state flags */
60 Glyph attr; /* current char attributes */
65 /* CSI Escape sequence structs */
66 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
68 char buf[ESC_BUF_SIZ]; /* raw string */
69 int len; /* raw string length */
72 int narg; /* nb of args */
76 /* Internal representation of the screen */
80 Line* line; /* screen */
81 TCursor c; /* cursor */
83 int top; /* top scroll limit */
84 int bot; /* bottom scroll limit */
85 int mode; /* terminal mode flags */
86 int esc; /* escape state flags */
87 char title[ESC_TITLE_SIZ];
91 /* Purely graphic info */
97 int w; /* window width */
98 int h; /* window height */
99 int bufw; /* pixmap width */
100 int bufh; /* pixmap height */
101 int ch; /* char height */
102 int cw; /* char width */
112 /* Drawing Context */
114 unsigned long col[256];
120 static void die(const char *errstr, ...);
121 static void draw(int);
122 static void execsh(void);
123 static void sigchld(int);
124 static void run(void);
126 static void csidump(void);
127 static void csihandle(void);
128 static void csiparse(void);
129 static void csireset(void);
131 static void tclearregion(int, int, int, int);
132 static void tcursor(int);
133 static void tmovecursor(int);
134 static void tdeletechar(int);
135 static void tdeleteline(int);
136 static void tinsertblank(int);
137 static void tinsertblankline(int);
138 static void tmoveto(int, int);
139 static void tnew(int, int);
140 static void tnewline(void);
141 static void tputc(char);
142 static void tputs(char*, int);
143 static void treset(void);
144 static void tresize(int, int);
145 static void tscroll(void);
146 static void tscrollup(int);
147 static void tscrolldown(int);
148 static void tsetattr(int*, int);
149 static void tsetchar(char);
150 static void tsetscroll(int, int);
152 static void ttynew(void);
153 static void ttyread(void);
154 static void ttyresize(int, int);
155 static void ttywrite(const char *, size_t);
157 static void xclear(int, int, int, int);
158 static void xcursor(int);
159 static void xinit(void);
160 static void xloadcols(void);
162 static void expose(XEvent *);
163 static char* kmap(KeySym);
164 static void kpress(XEvent *);
165 static void resize(XEvent *);
167 static void (*handler[LASTEvent])(XEvent *) = {
170 [ConfigureNotify] = resize
177 static CSIEscape escseq;
188 for(row = 0; row < term.row; row++) {
189 for(col = 0; col < term.col; col++) {
190 if(col == term.c.x && row == term.c.y)
193 c = term.line[row][col];
194 putchar(c.state & GLYPH_SET ? c.c : '.');
203 die(const char *errstr, ...) {
206 va_start(ap, errstr);
207 vfprintf(stderr, errstr, ap);
214 char *args[3] = {getenv("SHELL"), "-i", NULL};
215 DEFAULT(args[0], "/bin/sh"); /* default shell if getenv() failed */
216 putenv("TERM=" TNAME);
217 execvp(args[0], args);
221 xbell(void) { /* visual bell */
222 XRectangle r = { BORDER, BORDER, xw.bufw, xw.bufh };
223 XSetForeground(xw.dis, dc.gc, dc.col[BellCol]);
224 XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);
232 if(waitpid(pid, &stat, 0) < 0)
233 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
235 exit(WEXITSTATUS(stat));
245 if((m = posix_openpt(O_RDWR | O_NOCTTY)) < 0)
246 die("openpt failed: %s\n", SERRNO);
248 die("grandpt failed: %s\n", SERRNO);
250 die("unlockpt failed: %s\n", SERRNO);
251 if(!(pts = ptsname(m)))
252 die("ptsname failed: %s\n", SERRNO);
253 if((s = open(pts, O_RDWR | O_NOCTTY)) < 0)
254 die("Couldn't open slave: %s\n", SERRNO);
255 fcntl(s, F_SETFL, O_NDELAY);
256 switch(pid = fork()) {
258 die("fork failed\n");
261 setsid(); /* create a new process group */
262 dup2(s, STDIN_FILENO);
263 dup2(s, STDOUT_FILENO);
264 dup2(s, STDERR_FILENO);
265 if(ioctl(s, TIOCSCTTY, NULL) < 0)
266 die("ioctl TTIOCSTTY 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);
324 term.c.attr.mode = ATTR_NULL;
325 term.c.attr.fg = DefaultFG;
326 term.c.attr.bg = DefaultBG;
327 term.c.x = term.c.y = 0;
329 term.top = 0, term.bot = term.row - 1;
330 term.mode = MODE_WRAP;
331 tclearregion(0, 0, term.col-1, term.row-1);
335 tnew(int col, int row) { /* screen size */
336 term.row = row, term.col = col;
337 term.top = 0, term.bot = term.row - 1;
339 term.mode = MODE_WRAP;
341 term.c.attr.mode = ATTR_NULL;
342 term.c.attr.fg = DefaultFG;
343 term.c.attr.bg = DefaultBG;
344 term.c.x = term.c.y = 0;
346 /* allocate screen */
347 term.line = calloc(term.row, sizeof(Line));
348 for(row = 0 ; row < term.row; row++)
349 term.line[row] = calloc(term.col, sizeof(Glyph));
352 /* TODO: Replace with scrollup/scolldown */
355 Line temp = term.line[term.top];
358 for(i = term.top; i < term.bot; i++)
359 term.line[i] = term.line[i+1];
360 memset(temp, 0, sizeof(Glyph) * term.col);
361 term.line[term.bot] = temp;
365 tscrolldown (int n) {
369 LIMIT(n, 0, term.bot-term.top+1);
371 for(i = 0; i < n; i++)
372 memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph));
374 for(i = term.bot; i >= term.top+n; i--) {
376 term.line[i] = term.line[i-n];
377 term.line[i-n] = temp;
385 LIMIT(n, 0, term.bot-term.top+1);
387 for(i = 0; i < n; i++)
388 memset(term.line[term.top+i], 0, term.col*sizeof(Glyph));
390 for(i = term.top; i <= term.bot-n; i++) {
392 term.line[i] = term.line[i+n];
393 term.line[i+n] = temp;
399 int y = term.c.y + 1;
401 tscroll(), y = term.bot;
408 char *p = escseq.buf;
412 escseq.priv = 1, p++;
414 while(p < escseq.buf+escseq.len) {
416 escseq.arg[escseq.narg] *= 10;
417 escseq.arg[escseq.narg] += *p++ - '0'/*, noarg = 0 */;
419 if(*p == ';' && escseq.narg+1 < ESC_ARG_SIZ)
430 tmoveto(int x, int y) {
431 term.c.x = x < 0 ? 0 : x >= term.col ? term.col-1 : x;
432 term.c.y = y < 0 ? 0 : y >= term.row ? term.row-1 : y;
436 tmovecursor(int dir) {
437 int xf = term.c.x, yf = term.c.y;
448 if(term.mode & MODE_WRAP && xf < 0) {
449 xf = term.col-1, yf--;
451 yf = term.top, xf = 0;
456 if(term.mode & MODE_WRAP && xf >= term.col) {
459 yf = term.bot, tscroll();
468 term.line[term.c.y][term.c.x] = term.c.attr;
469 term.line[term.c.y][term.c.x].c = c;
470 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
474 tclearregion(int x1, int y1, int x2, int y2) {
478 temp = x1, x1 = x2, x2 = temp;
480 temp = y1, y1 = y2, y2 = temp;
482 LIMIT(x1, 0, term.col-1);
483 LIMIT(x2, 0, term.col-1);
484 LIMIT(y1, 0, term.row-1);
485 LIMIT(y2, 0, term.row-1);
487 for(y = y1; y <= y2; y++)
488 memset(&term.line[y][x1], 0, sizeof(Glyph)*(x2-x1+1));
493 int src = term.c.x + n;
495 int size = term.col - src;
497 if(src >= term.col) {
498 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
501 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
502 tclearregion(term.col-size, term.c.y, term.col-1, term.c.y);
506 tinsertblank(int n) {
509 int size = term.col - n - src;
511 if(dst >= term.col) {
512 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
515 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
516 tclearregion(src, term.c.y, dst, term.c.y);
520 tinsertblankline(int n) {
525 if(term.c.y > term.bot)
527 else if(term.c.y < term.top)
529 if(term.c.y + n >= bot) {
530 tclearregion(0, term.c.y, term.col-1, bot);
533 for(i = bot; i >= term.c.y+n; i--) {
534 /* swap deleted line <-> blanked line */
535 blank = term.line[i];
536 term.line[i] = term.line[i-n];
537 term.line[i-n] = blank;
539 memset(blank, 0, term.col * sizeof(Glyph));
549 if(term.c.y > term.bot)
551 else if(term.c.y < term.top)
553 if(term.c.y + n >= bot) {
554 tclearregion(0, term.c.y, term.col-1, bot);
557 for(i = term.c.y; i <= bot-n; i++) {
558 /* swap deleted line <-> blanked line */
559 blank = term.line[i];
560 term.line[i] = term.line[i+n];
561 term.line[i+n] = blank;
563 memset(blank, 0, term.col * sizeof(Glyph));
568 tsetattr(int *attr, int l) {
571 for(i = 0; i < l; i++) {
574 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);
575 term.c.attr.fg = DefaultFG;
576 term.c.attr.bg = DefaultBG;
579 term.c.attr.mode |= ATTR_BOLD;
582 term.c.attr.mode |= ATTR_UNDERLINE;
585 term.c.attr.mode |= ATTR_REVERSE;
588 term.c.attr.mode &= ~ATTR_BOLD;
591 term.c.attr.mode &= ~ATTR_UNDERLINE;
594 term.c.attr.mode &= ~ATTR_REVERSE;
597 if (i + 2 < l && attr[i + 1] == 5) {
599 if (BETWEEN(attr[i], 0, 255))
600 term.c.attr.fg = attr[i];
602 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
605 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
608 term.c.attr.fg = DefaultFG;
611 if (i + 2 < l && attr[i + 1] == 5) {
613 if (BETWEEN(attr[i], 0, 255))
614 term.c.attr.bg = attr[i];
616 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
619 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
622 term.c.attr.bg = DefaultBG;
625 if(BETWEEN(attr[i], 30, 37))
626 term.c.attr.fg = attr[i] - 30;
627 else if(BETWEEN(attr[i], 40, 47))
628 term.c.attr.bg = attr[i] - 40;
629 else if(BETWEEN(attr[i], 90, 97))
630 term.c.attr.fg = attr[i] - 90 + 8;
631 else if(BETWEEN(attr[i], 100, 107))
632 term.c.attr.fg = attr[i] - 100 + 8;
634 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
641 tsetscroll(int t, int b) {
644 LIMIT(t, 0, term.row-1);
645 LIMIT(b, 0, term.row-1);
657 switch(escseq.mode) {
660 printf("erresc: unknown csi ");
664 case '@': /* ICH -- Insert <n> blank char */
665 DEFAULT(escseq.arg[0], 1);
666 tinsertblank(escseq.arg[0]);
668 case 'A': /* CUU -- Cursor <n> Up */
670 DEFAULT(escseq.arg[0], 1);
671 tmoveto(term.c.x, term.c.y-escseq.arg[0]);
673 case 'B': /* CUD -- Cursor <n> Down */
674 DEFAULT(escseq.arg[0], 1);
675 tmoveto(term.c.x, term.c.y+escseq.arg[0]);
677 case 'C': /* CUF -- Cursor <n> Forward */
679 DEFAULT(escseq.arg[0], 1);
680 tmoveto(term.c.x+escseq.arg[0], term.c.y);
682 case 'D': /* CUB -- Cursor <n> Backward */
683 DEFAULT(escseq.arg[0], 1);
684 tmoveto(term.c.x-escseq.arg[0], term.c.y);
686 case 'E': /* CNL -- Cursor <n> Down and first col */
687 DEFAULT(escseq.arg[0], 1);
688 tmoveto(0, term.c.y+escseq.arg[0]);
690 case 'F': /* CPL -- Cursor <n> Up and first col */
691 DEFAULT(escseq.arg[0], 1);
692 tmoveto(0, term.c.y-escseq.arg[0]);
694 case 'G': /* CHA -- Move to <col> */
695 case '`': /* XXX: HPA -- same? */
696 DEFAULT(escseq.arg[0], 1);
697 tmoveto(escseq.arg[0]-1, term.c.y);
699 case 'H': /* CUP -- Move to <row> <col> */
700 case 'f': /* XXX: HVP -- same? */
701 DEFAULT(escseq.arg[0], 1);
702 DEFAULT(escseq.arg[1], 1);
703 tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
705 /* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */
706 case 'J': /* ED -- Clear screen */
707 switch(escseq.arg[0]) {
709 tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
712 tclearregion(0, 0, term.c.x, term.c.y);
715 tclearregion(0, 0, term.col-1, term.row-1);
717 case 3: /* XXX: erase saved lines (xterm) */
722 case 'K': /* EL -- Clear line */
723 switch(escseq.arg[0]) {
725 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
728 tclearregion(0, term.c.y, term.c.x, term.c.y);
731 tclearregion(0, term.c.y, term.col-1, term.c.y);
735 case 'S': /* SU -- Scroll <n> line up */
736 DEFAULT(escseq.arg[0], 1);
737 tscrollup(escseq.arg[0]);
739 case 'T': /* SD -- Scroll <n> line down */
740 DEFAULT(escseq.arg[0], 1);
741 tscrolldown(escseq.arg[0]);
743 case 'L': /* IL -- Insert <n> blank lines */
744 DEFAULT(escseq.arg[0], 1);
745 tinsertblankline(escseq.arg[0]);
747 case 'l': /* RM -- Reset Mode */
749 switch(escseq.arg[0]) {
751 term.mode &= ~MODE_APPKEYPAD;
754 term.mode &= ~MODE_WRAP;
756 case 12: /* att610 -- Stop blinking cursor (IGNORED) */
761 case 1048: /* XXX: no alt. screen to erase/save */
763 tcursor(CURSOR_LOAD);
764 tclearregion(0, 0, term.col-1, term.row-1);
770 switch(escseq.arg[0]) {
772 term.mode &= ~MODE_INSERT;
779 case 'M': /* DL -- Delete <n> lines */
780 DEFAULT(escseq.arg[0], 1);
781 tdeleteline(escseq.arg[0]);
783 case 'X': /* ECH -- Erase <n> char */
784 DEFAULT(escseq.arg[0], 1);
785 tclearregion(term.c.x, term.c.y, term.c.x + escseq.arg[0], term.c.y);
787 case 'P': /* DCH -- Delete <n> char */
788 DEFAULT(escseq.arg[0], 1);
789 tdeletechar(escseq.arg[0]);
791 /* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation <n> tab stops */
792 case 'd': /* VPA -- Move to <row> */
793 DEFAULT(escseq.arg[0], 1);
794 tmoveto(term.c.x, escseq.arg[0]-1);
796 case 'h': /* SM -- Set terminal mode */
798 switch(escseq.arg[0]) {
800 term.mode |= MODE_APPKEYPAD;
803 term.mode |= MODE_WRAP;
805 case 12: /* att610 -- Start blinking cursor (IGNORED) */
811 case 1049: /* XXX: no alt. screen to erase/save */
812 tcursor(CURSOR_SAVE);
813 tclearregion(0, 0, term.col-1, term.row-1);
815 default: goto unknown;
818 switch(escseq.arg[0]) {
820 term.mode |= MODE_INSERT;
822 default: goto unknown;
826 case 'm': /* SGR -- Terminal attribute (color) */
827 tsetattr(escseq.arg, escseq.narg);
829 case 'r': /* DECSTBM -- Set Scrolling Region */
833 DEFAULT(escseq.arg[0], 1);
834 DEFAULT(escseq.arg[1], term.row);
835 tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
838 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
839 tcursor(CURSOR_SAVE);
841 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
842 tcursor(CURSOR_LOAD);
850 printf("ESC [ %s", escseq.priv ? "? " : "");
852 for(i = 0; i < escseq.narg; i++)
853 printf("%d ", escseq.arg[i]);
855 putchar(escseq.mode);
861 memset(&escseq, 0, sizeof(escseq));
866 int space = TAB - term.c.x % TAB;
868 if(term.c.x + space >= term.col)
871 for(; space > 0; space--)
872 tmovecursor(CURSOR_RIGHT);
877 if(term.esc & ESC_START) {
878 if(term.esc & ESC_CSI) {
879 escseq.buf[escseq.len++] = c;
880 if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
882 csiparse(), csihandle();
884 } else if(term.esc & ESC_OSC) {
887 term.esc = ESC_START | ESC_TITLE;
889 } else if(term.esc & ESC_TITLE) {
890 if(c == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
892 term.title[term.titlelen] = '\0';
893 XStoreName(xw.dis, xw.win, term.title);
895 term.title[term.titlelen++] = c;
897 } else if(term.esc & ESC_ALTCHARSET) {
899 case '0': /* Line drawing crap */
900 term.c.attr.mode |= ATTR_GFX;
902 case 'B': /* Back to regular text */
903 term.c.attr.mode &= ~ATTR_GFX;
906 printf("esc unhandled charset: ESC ( %c\n", c);
918 term.esc |= ESC_ALTCHARSET;
921 tmoveto(term.c.x, term.c.y-1);
925 tmoveto(term.c.x, term.c.y+1);
929 tmoveto(term.c.x+1, term.c.y);
932 case 'D': /* XXX: CUP (VT100) or IND (VT52) ... */
933 tmoveto(term.c.x-1, term.c.y);
936 case 'E': /* NEL -- Next line */
940 case 'M': /* RI -- Reverse index */
941 if(term.c.y == term.top)
944 tmoveto(term.c.x, term.c.y-1);
947 case 'c': /* RIS -- Reset to inital state */
951 case '=': /* DECPAM */
952 term.mode |= MODE_APPKEYPAD;
955 case '>': /* DECPNM */
956 term.mode &= ~MODE_APPKEYPAD;
960 tcursor(CURSOR_SAVE);
964 tcursor(CURSOR_LOAD);
968 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", c, isprint(c)?c:'.');
978 tmovecursor(CURSOR_LEFT);
981 tmoveto(0, term.c.y);
991 term.esc = ESC_START;
995 tmovecursor(CURSOR_RIGHT);
1002 tputs(char *s, int len) {
1003 for(; len > 0; len--)
1008 tresize(int col, int row) {
1011 int minrow = MIN(row, term.row);
1012 int mincol = MIN(col, term.col);
1014 if(col < 1 || row < 1)
1017 line = calloc(row, sizeof(Line));
1018 for(i = 0 ; i < row; i++)
1019 line[i] = calloc(col, sizeof(Glyph));
1021 for(i = 0 ; i < minrow; i++)
1022 memcpy(line[i], term.line[i], mincol * sizeof(Glyph));
1024 for(i = 0; i < term.row; i++)
1028 LIMIT(term.c.x, 0, col-1);
1029 LIMIT(term.c.y, 0, row-1);
1030 LIMIT(term.top, 0, row-1);
1031 LIMIT(term.bot, 0, row-1);
1035 term.col = col, term.row = row;
1042 Colormap cmap = DefaultColormap(xw.dis, xw.scr);
1043 unsigned long white = WhitePixel(xw.dis, xw.scr);
1045 for(i = 0; i < 16; i++) {
1046 if (!XAllocNamedColor(xw.dis, cmap, colorname[i], &color, &color)) {
1048 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1050 dc.col[i] = color.pixel;
1053 /* same colors as xterm */
1054 for(r = 0; r < 6; r++)
1055 for(g = 0; g < 6; g++)
1056 for(b = 0; b < 6; b++) {
1057 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1058 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1059 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1060 if (!XAllocColor(xw.dis, cmap, &color)) {
1062 fprintf(stderr, "Could not allocate color %d\n", i);
1064 dc.col[i] = color.pixel;
1068 for(r = 0; r < 24; r++, i++) {
1069 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1070 if (!XAllocColor(xw.dis, cmap, &color)) {
1072 fprintf(stderr, "Could not allocate color %d\n", i);
1074 dc.col[i] = color.pixel;
1079 xclear(int x1, int y1, int x2, int y2) {
1080 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1081 XFillRectangle(xw.dis, xw.buf, dc.gc,
1082 x1 * xw.cw, y1 * xw.ch,
1083 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1089 XClassHint class = {TNAME, TNAME};
1090 XWMHints wm = {.flags = InputHint, .input = 1};
1092 .flags = PSize | PResizeInc | PBaseSize,
1095 .height_inc = xw.ch,
1097 .base_height = 2*BORDER,
1098 .base_width = 2*BORDER,
1100 XSetWMProperties(xw.dis, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
1105 xw.dis = XOpenDisplay(NULL);
1106 xw.scr = XDefaultScreen(xw.dis);
1108 die("Can't open display\n");
1111 if(!(dc.font = XLoadQueryFont(xw.dis, FONT)) || !(dc.bfont = XLoadQueryFont(xw.dis, BOLDFONT)))
1112 die("Can't load font %s\n", dc.font ? BOLDFONT : FONT);
1114 /* XXX: Assuming same size for bold font */
1115 xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
1116 xw.ch = dc.font->ascent + dc.font->descent;
1121 term.c.attr.fg = DefaultFG;
1122 term.c.attr.bg = DefaultBG;
1123 term.c.attr.mode = ATTR_NULL;
1125 xw.h = term.row * xw.ch + 2*BORDER;
1126 xw.w = term.col * xw.cw + 2*BORDER;
1127 xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
1131 xw.bufw = xw.w - 2*BORDER;
1132 xw.bufh = xw.h - 2*BORDER;
1133 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1135 dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
1136 XMapWindow(xw.dis, xw.win);
1138 XStoreName(xw.dis, xw.win, "st");
1143 xdraws(char *s, Glyph base, int x, int y, int len) {
1144 unsigned long xfg, xbg;
1145 int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*xw.cw;
1148 if(base.mode & ATTR_REVERSE)
1149 xfg = dc.col[base.bg], xbg = dc.col[base.fg];
1151 xfg = dc.col[base.fg], xbg = dc.col[base.bg];
1153 XSetBackground(xw.dis, dc.gc, xbg);
1154 XSetForeground(xw.dis, dc.gc, xfg);
1156 if(base.mode & ATTR_GFX)
1157 for(i = 0; i < len; i++)
1158 s[i] = gfx[(int)s[i]];
1160 XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1161 XDrawImageString(xw.dis, xw.buf, dc.gc, winx, winy, s, len);
1163 if(base.mode & ATTR_UNDERLINE)
1164 XDrawLine(xw.dis, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
1169 static int oldx = 0;
1170 static int oldy = 0;
1171 Glyph g = {' ', ATTR_NULL, DefaultBG, DefaultCS, 0};
1173 LIMIT(oldx, 0, term.col-1);
1174 LIMIT(oldy, 0, term.row-1);
1176 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
1177 g.c = term.line[term.c.y][term.c.x].c;
1179 /* remove the old cursor */
1180 if(term.line[oldy][oldx].state & GLYPH_SET)
1181 xdraws(&term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1);
1183 xclear(oldx, oldy, oldx, oldy);
1185 /* draw the new one */
1186 if(mode == CURSOR_DRAW) {
1187 xdraws(&g.c, g, term.c.x, term.c.y, 1);
1188 oldx = term.c.x, oldy = term.c.y;
1193 /* basic drawing routines */
1195 xdrawc(int x, int y, Glyph g) {
1196 XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
1197 XSetBackground(xw.dis, dc.gc, dc.col[g.bg]);
1198 XSetForeground(xw.dis, dc.gc, dc.col[g.fg]);
1199 XSetFont(xw.dis, dc.gc, g.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1200 XDrawImageString(xw.dis, xw.buf, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1);
1207 xclear(0, 0, term.col-1, term.row-1);
1208 for(y = 0; y < term.row; y++)
1209 for(x = 0; x < term.col; x++)
1210 if(term.line[y][x].state & GLYPH_SET)
1211 xdrawc(x, y, term.line[y][x]);
1214 xcursor(CURSOR_DRAW);
1215 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1220 /* optimized drawing routine */
1222 draw(int redraw_all) {
1225 char buf[DRAW_BUF_SIZ];
1227 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1228 XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
1229 for(y = 0; y < term.row; y++) {
1230 base = term.line[y][0];
1232 for(x = 0; x < term.col; x++) {
1233 new = term.line[y][x];
1234 if(!ATTRCMP(base, new) && i < DRAW_BUF_SIZ)
1237 xdraws(buf, base, ox, y, i);
1244 xdraws(buf, base, ox, y, i);
1246 xcursor(term.hidec ? CURSOR_HIDE : CURSOR_DRAW);
1247 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1254 expose(XEvent *ev) {
1255 draw(SCREEN_REDRAW);
1261 for(i = 0; i < LEN(key); i++)
1263 return (char*)key[i].s;
1268 kpress(XEvent *ev) {
1269 XKeyEvent *e = &ev->xkey;
1277 meta = e->state & Mod1Mask;
1278 shift = e->state & ShiftMask;
1279 len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
1281 if((customkey = kmap(ksym)))
1282 ttywrite(customkey, strlen(customkey));
1284 buf[sizeof(buf)-1] = '\0';
1285 if(meta && len == 1)
1286 ttywrite("\033", 1);
1294 sprintf(buf, "\033%c%c", term.mode & MODE_APPKEYPAD ? 'O' : '[', "DACB"[ksym - XK_Left]);
1299 draw(1), puts("draw!")/* XXX: paste X clipboard */;
1302 fprintf(stderr, "errkey: %d\n", (int)ksym);
1311 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
1314 xw.w = e->xconfigure.width;
1315 xw.h = e->xconfigure.height;
1316 xw.bufw = xw.w - 2*BORDER;
1317 xw.bufh = xw.h - 2*BORDER;
1318 col = xw.bufw / xw.cw;
1319 row = xw.bufh / xw.ch;
1321 ttyresize(col, row);
1322 XFreePixmap(xw.dis, xw.buf);
1323 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1324 draw(SCREEN_REDRAW);
1331 int xfd = XConnectionNumber(xw.dis);
1334 XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask | StructureNotifyMask);
1335 XResizeWindow(xw.dis, xw.win, xw.w, xw.h); /* XXX: fix resize bug in wmii (?) */
1339 FD_SET(cmdfd, &rfd);
1341 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) == -1) {
1344 die("select failed: %s\n", SERRNO);
1346 if(FD_ISSET(cmdfd, &rfd)) {
1348 draw(SCREEN_UPDATE);
1350 while(XPending(xw.dis)) {
1351 XNextEvent(xw.dis, &ev);
1352 if(handler[ev.type])
1353 (handler[ev.type])(&ev);
1359 main(int argc, char *argv[]) {
1360 if(argc == 2 && !strncmp("-v", argv[1], 3))
1361 die("st-" VERSION ", © 2009 st engineers\n");
1363 die("usage: st [-v]\n");
1364 setlocale(LC_CTYPE, "");