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)
38 /* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
39 enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 };
40 enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT, CURSOR_HIDE, CURSOR_DRAW,
41 CURSOR_SAVE, CURSOR_LOAD };
42 enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
43 enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4 };
44 enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
45 enum { SCREEN_UPDATE, SCREEN_REDRAW };
48 char c; /* character code */
49 char mode; /* attribute flags */
50 int fg; /* foreground */
51 int bg; /* background */
52 char state; /* state flags */
58 Glyph attr; /* current char attributes */
63 /* CSI Escape sequence structs */
64 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
66 char buf[ESC_BUF_SIZ]; /* raw string */
67 int len; /* raw string length */
70 int narg; /* nb of args */
74 /* Internal representation of the screen */
78 Line* line; /* screen */
79 TCursor c; /* cursor */
81 int top; /* top scroll limit */
82 int bot; /* bottom scroll limit */
83 int mode; /* terminal mode flags */
84 int esc; /* escape state flags */
85 char title[ESC_TITLE_SIZ];
89 /* Purely graphic info */
95 int w; /* window width */
96 int h; /* window height */
97 int bufw; /* pixmap width */
98 int bufh; /* pixmap height */
99 int ch; /* char height */
100 int cw; /* char width */
108 /* Drawing Context */
110 unsigned long col[256];
118 static void die(const char *errstr, ...);
119 static void draw(int);
120 static void execsh(void);
121 static void sigchld(int);
122 static void run(void);
124 static void csidump(void);
125 static void csihandle(void);
126 static void csiparse(void);
127 static void csireset(void);
129 static void tclearregion(int, int, int, int);
130 static void tcursor(int);
131 static void tmovecursor(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 tputc(char);
140 static void tputs(char*, int);
141 static void treset(void);
142 static void tresize(int, int);
143 static void tscroll(void);
144 static void tscrollup(int);
145 static void tscrolldown(int);
146 static void tsetattr(int*, int);
147 static void tsetchar(char);
148 static void tsetscroll(int, int);
150 static void ttynew(void);
151 static void ttyread(void);
152 static void ttyresize(int, int);
153 static void ttywrite(const char *, size_t);
155 static void xclear(int, int, int, int);
156 static void xcursor(int);
157 static void xinit(void);
158 static void xloadcols(void);
160 static void expose(XEvent *);
161 static char* kmap(KeySym);
162 static void kpress(XEvent *);
163 static void resize(XEvent *);
165 static void (*handler[LASTEvent])(XEvent *) = {
168 [ConfigureNotify] = resize
175 static CSIEscape escseq;
186 for(row = 0; row < term.row; row++) {
187 for(col = 0; col < term.col; col++) {
188 if(col == term.c.x && row == term.c.y)
191 c = term.line[row][col];
192 putchar(c.state & GLYPH_SET ? c.c : '.');
201 die(const char *errstr, ...) {
204 va_start(ap, errstr);
205 vfprintf(stderr, errstr, ap);
212 char *args[3] = {getenv("SHELL"), "-i", NULL};
213 DEFAULT(args[0], "/bin/sh"); /* default shell if getenv() failed */
214 putenv("TERM=" TNAME);
215 execvp(args[0], args);
219 xbell(void) { /* visual bell */
220 XRectangle r = { BORDER, BORDER, xw.bufw, xw.bufh };
221 XSetForeground(xw.dis, dc.gc, dc.col[BellCol]);
222 XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);
230 if(waitpid(pid, &stat, 0) < 0)
231 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
233 exit(WEXITSTATUS(stat));
243 if((m = posix_openpt(O_RDWR | O_NOCTTY)) < 0)
244 die("openpt failed: %s\n", SERRNO);
246 die("grandpt failed: %s\n", SERRNO);
248 die("unlockpt failed: %s\n", SERRNO);
249 if(!(pts = ptsname(m)))
250 die("ptsname failed: %s\n", SERRNO);
251 if((s = open(pts, O_RDWR | O_NOCTTY)) < 0)
252 die("Couldn't open slave: %s\n", SERRNO);
253 fcntl(s, F_SETFL, O_NDELAY);
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 TTIOCSTTY failed: %s\n", SERRNO);
270 signal(SIGCHLD, sigchld);
277 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
279 fprintf(stderr, "\n");
284 char buf[BUFSIZ] = {0};
287 if((ret = read(cmdfd, buf, BUFSIZ)) < 0)
288 die("Couldn't read from shell: %s\n", SERRNO);
294 ttywrite(const char *s, size_t n) {
295 if(write(cmdfd, s, n) == -1)
296 die("write error on tty: %s\n", SERRNO);
300 ttyresize(int x, int y) {
305 w.ws_xpixel = w.ws_ypixel = 0;
306 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
307 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
314 if(mode == CURSOR_SAVE)
316 else if(mode == CURSOR_LOAD)
317 term.c = c, tmoveto(c.x, c.y);
322 term.c.attr.mode = ATTR_NULL;
323 term.c.attr.fg = DefaultFG;
324 term.c.attr.bg = DefaultBG;
325 term.c.x = term.c.y = 0;
327 term.top = 0, term.bot = term.row - 1;
328 term.mode = MODE_WRAP;
329 tclearregion(0, 0, term.col-1, term.row-1);
333 tnew(int col, int row) { /* screen size */
334 term.row = row, term.col = col;
335 term.top = 0, term.bot = term.row - 1;
337 term.mode = MODE_WRAP;
339 term.c.attr.mode = ATTR_NULL;
340 term.c.attr.fg = DefaultFG;
341 term.c.attr.bg = DefaultBG;
342 term.c.x = term.c.y = 0;
344 /* allocate screen */
345 term.line = calloc(term.row, sizeof(Line));
346 for(row = 0 ; row < term.row; row++)
347 term.line[row] = calloc(term.col, sizeof(Glyph));
350 /* TODO: Replace with scrollup/scolldown */
353 Line temp = term.line[term.top];
356 for(i = term.top; i < term.bot; i++)
357 term.line[i] = term.line[i+1];
358 memset(temp, 0, sizeof(Glyph) * term.col);
359 term.line[term.bot] = temp;
363 tscrolldown (int n) {
367 LIMIT(n, 0, term.bot-term.top+1);
369 for(i = 0; i < n; i++)
370 memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph));
372 for(i = term.bot; i >= term.top+n; i--) {
374 term.line[i] = term.line[i-n];
375 term.line[i-n] = temp;
383 LIMIT(n, 0, term.bot-term.top+1);
385 for(i = 0; i < n; i++)
386 memset(term.line[term.top+i], 0, term.col*sizeof(Glyph));
388 for(i = term.top; i <= term.bot-n; i++) {
390 term.line[i] = term.line[i+n];
391 term.line[i+n] = temp;
397 int y = term.c.y + 1;
399 tscroll(), y = term.bot;
406 char *p = escseq.buf;
410 escseq.priv = 1, p++;
412 while(p < escseq.buf+escseq.len) {
414 escseq.arg[escseq.narg] *= 10;
415 escseq.arg[escseq.narg] += *p++ - '0'/*, noarg = 0 */;
417 if(*p == ';' && escseq.narg+1 < ESC_ARG_SIZ)
428 tmoveto(int x, int y) {
429 term.c.x = x < 0 ? 0 : x >= term.col ? term.col-1 : x;
430 term.c.y = y < 0 ? 0 : y >= term.row ? term.row-1 : y;
434 tmovecursor(int dir) {
435 int xf = term.c.x, yf = term.c.y;
446 if(term.mode & MODE_WRAP && xf < 0) {
447 xf = term.col-1, yf--;
449 yf = term.top, xf = 0;
454 if(term.mode & MODE_WRAP && xf >= term.col) {
457 yf = term.bot, tscroll();
466 term.line[term.c.y][term.c.x] = term.c.attr;
467 term.line[term.c.y][term.c.x].c = c;
468 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
472 tclearregion(int x1, int y1, int x2, int y2) {
476 temp = x1, x1 = x2, x2 = temp;
478 temp = y1, y1 = y2, y2 = temp;
480 LIMIT(x1, 0, term.col-1);
481 LIMIT(x2, 0, term.col-1);
482 LIMIT(y1, 0, term.row-1);
483 LIMIT(y2, 0, term.row-1);
485 for(y = y1; y <= y2; y++)
486 memset(&term.line[y][x1], 0, sizeof(Glyph)*(x2-x1+1));
491 int src = term.c.x + n;
493 int size = term.col - src;
495 if(src >= term.col) {
496 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
499 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
500 tclearregion(term.col-size, term.c.y, term.col-1, term.c.y);
504 tinsertblank(int n) {
507 int size = term.col - n - src;
509 if(dst >= term.col) {
510 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
513 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
514 tclearregion(src, term.c.y, dst, term.c.y);
518 tinsertblankline(int n) {
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 = bot; i >= term.c.y+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));
547 if(term.c.y > term.bot)
549 else if(term.c.y < term.top)
551 if(term.c.y + n >= bot) {
552 tclearregion(0, term.c.y, term.col-1, bot);
555 for(i = term.c.y; i <= bot-n; i++) {
556 /* swap deleted line <-> blanked line */
557 blank = term.line[i];
558 term.line[i] = term.line[i+n];
559 term.line[i+n] = blank;
561 memset(blank, 0, term.col * sizeof(Glyph));
566 tsetattr(int *attr, int l) {
569 for(i = 0; i < l; i++) {
572 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);
573 term.c.attr.fg = DefaultFG;
574 term.c.attr.bg = DefaultBG;
577 term.c.attr.mode |= ATTR_BOLD;
580 term.c.attr.mode |= ATTR_UNDERLINE;
583 term.c.attr.mode |= ATTR_REVERSE;
586 term.c.attr.mode &= ~ATTR_BOLD;
589 term.c.attr.mode &= ~ATTR_UNDERLINE;
592 term.c.attr.mode &= ~ATTR_REVERSE;
595 if (i + 2 < l && attr[i + 1] == 5) {
597 if (BETWEEN(attr[i], 0, 255))
598 term.c.attr.fg = attr[i];
600 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
603 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
606 term.c.attr.fg = DefaultFG;
609 if (i + 2 < l && attr[i + 1] == 5) {
611 if (BETWEEN(attr[i], 0, 255))
612 term.c.attr.bg = attr[i];
614 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
617 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
620 term.c.attr.bg = DefaultBG;
623 if(BETWEEN(attr[i], 30, 37))
624 term.c.attr.fg = attr[i] - 30;
625 else if(BETWEEN(attr[i], 40, 47))
626 term.c.attr.bg = attr[i] - 40;
627 else if(BETWEEN(attr[i], 90, 97))
628 term.c.attr.fg = attr[i] - 90 + 8;
629 else if(BETWEEN(attr[i], 100, 107))
630 term.c.attr.fg = attr[i] - 100 + 8;
632 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
639 tsetscroll(int t, int b) {
642 LIMIT(t, 0, term.row-1);
643 LIMIT(b, 0, term.row-1);
655 switch(escseq.mode) {
658 printf("erresc: unknown csi ");
662 case '@': /* ICH -- Insert <n> blank char */
663 DEFAULT(escseq.arg[0], 1);
664 tinsertblank(escseq.arg[0]);
666 case 'A': /* CUU -- Cursor <n> Up */
668 DEFAULT(escseq.arg[0], 1);
669 tmoveto(term.c.x, term.c.y-escseq.arg[0]);
671 case 'B': /* CUD -- Cursor <n> Down */
672 DEFAULT(escseq.arg[0], 1);
673 tmoveto(term.c.x, term.c.y+escseq.arg[0]);
675 case 'C': /* CUF -- Cursor <n> Forward */
677 DEFAULT(escseq.arg[0], 1);
678 tmoveto(term.c.x+escseq.arg[0], term.c.y);
680 case 'D': /* CUB -- Cursor <n> Backward */
681 DEFAULT(escseq.arg[0], 1);
682 tmoveto(term.c.x-escseq.arg[0], term.c.y);
684 case 'E': /* CNL -- Cursor <n> Down and first col */
685 DEFAULT(escseq.arg[0], 1);
686 tmoveto(0, term.c.y+escseq.arg[0]);
688 case 'F': /* CPL -- Cursor <n> Up and first col */
689 DEFAULT(escseq.arg[0], 1);
690 tmoveto(0, term.c.y-escseq.arg[0]);
692 case 'G': /* CHA -- Move to <col> */
693 case '`': /* XXX: HPA -- same? */
694 DEFAULT(escseq.arg[0], 1);
695 tmoveto(escseq.arg[0]-1, term.c.y);
697 case 'H': /* CUP -- Move to <row> <col> */
698 case 'f': /* XXX: HVP -- same? */
699 DEFAULT(escseq.arg[0], 1);
700 DEFAULT(escseq.arg[1], 1);
701 tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
703 /* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */
704 case 'J': /* ED -- Clear screen */
705 switch(escseq.arg[0]) {
707 tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
710 tclearregion(0, 0, term.c.x, term.c.y);
713 tclearregion(0, 0, term.col-1, term.row-1);
715 case 3: /* XXX: erase saved lines (xterm) */
720 case 'K': /* EL -- Clear line */
721 switch(escseq.arg[0]) {
723 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
726 tclearregion(0, term.c.y, term.c.x, term.c.y);
729 tclearregion(0, term.c.y, term.col-1, term.c.y);
733 case 'S': /* SU -- Scroll <n> line up */
734 DEFAULT(escseq.arg[0], 1);
735 tscrollup(escseq.arg[0]);
737 case 'T': /* SD -- Scroll <n> line down */
738 DEFAULT(escseq.arg[0], 1);
739 tscrolldown(escseq.arg[0]);
741 case 'L': /* IL -- Insert <n> blank lines */
742 DEFAULT(escseq.arg[0], 1);
743 tinsertblankline(escseq.arg[0]);
745 case 'l': /* RM -- Reset Mode */
747 switch(escseq.arg[0]) {
749 term.mode &= ~MODE_APPKEYPAD;
752 term.mode &= ~MODE_WRAP;
754 case 12: /* att610 -- Stop blinking cursor (IGNORED) */
759 case 1048: /* XXX: no alt. screen to erase/save */
761 tcursor(CURSOR_LOAD);
762 tclearregion(0, 0, term.col-1, term.row-1);
768 switch(escseq.arg[0]) {
770 term.mode &= ~MODE_INSERT;
777 case 'M': /* DL -- Delete <n> lines */
778 DEFAULT(escseq.arg[0], 1);
779 tdeleteline(escseq.arg[0]);
781 case 'X': /* ECH -- Erase <n> char */
782 DEFAULT(escseq.arg[0], 1);
783 tclearregion(term.c.x, term.c.y, term.c.x + escseq.arg[0], term.c.y);
785 case 'P': /* DCH -- Delete <n> char */
786 DEFAULT(escseq.arg[0], 1);
787 tdeletechar(escseq.arg[0]);
789 /* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation <n> tab stops */
790 case 'd': /* VPA -- Move to <row> */
791 DEFAULT(escseq.arg[0], 1);
792 tmoveto(term.c.x, escseq.arg[0]-1);
794 case 'h': /* SM -- Set terminal mode */
796 switch(escseq.arg[0]) {
798 term.mode |= MODE_APPKEYPAD;
801 term.mode |= MODE_WRAP;
803 case 12: /* att610 -- Start blinking cursor (IGNORED) */
809 case 1049: /* XXX: no alt. screen to erase/save */
810 tcursor(CURSOR_SAVE);
811 tclearregion(0, 0, term.col-1, term.row-1);
813 default: goto unknown;
816 switch(escseq.arg[0]) {
818 term.mode |= MODE_INSERT;
820 default: goto unknown;
824 case 'm': /* SGR -- Terminal attribute (color) */
825 tsetattr(escseq.arg, escseq.narg);
827 case 'r': /* DECSTBM -- Set Scrolling Region */
831 DEFAULT(escseq.arg[0], 1);
832 DEFAULT(escseq.arg[1], term.row);
833 tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
836 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
837 tcursor(CURSOR_SAVE);
839 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
840 tcursor(CURSOR_LOAD);
848 printf("ESC [ %s", escseq.priv ? "? " : "");
850 for(i = 0; i < escseq.narg; i++)
851 printf("%d ", escseq.arg[i]);
853 putchar(escseq.mode);
859 memset(&escseq, 0, sizeof(escseq));
864 int space = TAB - term.c.x % TAB;
866 if(term.c.x + space >= term.col)
869 for(; space > 0; space--)
870 tmovecursor(CURSOR_RIGHT);
875 if(term.esc & ESC_START) {
876 if(term.esc & ESC_CSI) {
877 escseq.buf[escseq.len++] = c;
878 if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
880 csiparse(), csihandle();
882 } else if(term.esc & ESC_OSC) {
885 term.esc = ESC_START | ESC_TITLE;
887 } else if(term.esc & ESC_TITLE) {
888 if(c == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
890 term.title[term.titlelen] = '\0';
891 XStoreName(xw.dis, xw.win, term.title);
893 term.title[term.titlelen++] = c;
895 } else if(term.esc & ESC_ALTCHARSET) {
897 case '0': /* Line drawing crap */
898 term.c.attr.mode |= ATTR_GFX;
900 case 'B': /* Back to regular text */
901 term.c.attr.mode &= ~ATTR_GFX;
904 printf("esc unhandled charset: ESC ( %c\n", c);
916 term.esc |= ESC_ALTCHARSET;
919 tmoveto(term.c.x, term.c.y-1);
923 tmoveto(term.c.x, term.c.y+1);
927 tmoveto(term.c.x+1, term.c.y);
930 case 'D': /* XXX: CUP (VT100) or IND (VT52) ... */
931 tmoveto(term.c.x-1, term.c.y);
934 case 'E': /* NEL -- Next line */
938 case 'M': /* RI -- Reverse index */
939 if(term.c.y == term.top)
942 tmoveto(term.c.x, term.c.y-1);
945 case 'c': /* RIS -- Reset to inital state */
949 case '=': /* DECPAM */
950 term.mode |= MODE_APPKEYPAD;
953 case '>': /* DECPNM */
954 term.mode &= ~MODE_APPKEYPAD;
958 tcursor(CURSOR_SAVE);
962 tcursor(CURSOR_LOAD);
966 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", c, isprint(c)?c:'.');
976 tmovecursor(CURSOR_LEFT);
979 tmoveto(0, term.c.y);
989 term.esc = ESC_START;
993 tmovecursor(CURSOR_RIGHT);
1000 tputs(char *s, int len) {
1001 for(; len > 0; len--)
1006 tresize(int col, int row) {
1009 int minrow = MIN(row, term.row);
1010 int mincol = MIN(col, term.col);
1012 if(col < 1 || row < 1)
1015 line = calloc(row, sizeof(Line));
1016 for(i = 0 ; i < row; i++)
1017 line[i] = calloc(col, sizeof(Glyph));
1019 for(i = 0 ; i < minrow; i++)
1020 memcpy(line[i], term.line[i], mincol * sizeof(Glyph));
1022 for(i = 0; i < term.row; i++)
1026 LIMIT(term.c.x, 0, col-1);
1027 LIMIT(term.c.y, 0, row-1);
1028 LIMIT(term.top, 0, row-1);
1029 LIMIT(term.bot, 0, row-1);
1033 term.col = col, term.row = row;
1040 Colormap cmap = DefaultColormap(xw.dis, xw.scr);
1041 unsigned long white = WhitePixel(xw.dis, xw.scr);
1043 for(i = 0; i < 16; i++) {
1044 if (!XAllocNamedColor(xw.dis, cmap, colorname[i], &color, &color)) {
1046 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1048 dc.col[i] = color.pixel;
1051 /* same colors as xterm */
1052 for(r = 0; r < 6; r++)
1053 for(g = 0; g < 6; g++)
1054 for(b = 0; b < 6; b++) {
1055 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1056 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1057 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1058 if (!XAllocColor(xw.dis, cmap, &color)) {
1060 fprintf(stderr, "Could not allocate color %d\n", i);
1062 dc.col[i] = color.pixel;
1066 for(r = 0; r < 24; r++, i++) {
1067 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1068 if (!XAllocColor(xw.dis, cmap, &color)) {
1070 fprintf(stderr, "Could not allocate color %d\n", i);
1072 dc.col[i] = color.pixel;
1077 xclear(int x1, int y1, int x2, int y2) {
1078 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1079 XFillRectangle(xw.dis, xw.buf, dc.gc,
1080 x1 * xw.cw, y1 * xw.ch,
1081 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1087 XClassHint class = {TNAME, TNAME};
1088 XWMHints wm = {.flags = InputHint, .input = 1};
1090 .flags = PSize | PResizeInc | PBaseSize,
1093 .height_inc = xw.ch,
1095 .base_height = 2*BORDER,
1096 .base_width = 2*BORDER,
1098 XSetWMProperties(xw.dis, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
1103 xw.dis = XOpenDisplay(NULL);
1104 xw.scr = XDefaultScreen(xw.dis);
1106 die("Can't open display\n");
1109 if(!(dc.font = XLoadQueryFont(xw.dis, FONT)) || !(dc.bfont = XLoadQueryFont(xw.dis, BOLDFONT)))
1110 die("Can't load font %s\n", dc.font ? BOLDFONT : FONT);
1112 /* XXX: Assuming same size for bold font */
1113 xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
1114 xw.ch = dc.font->ascent + dc.font->descent;
1119 term.c.attr.fg = DefaultFG;
1120 term.c.attr.bg = DefaultBG;
1121 term.c.attr.mode = ATTR_NULL;
1123 xw.h = term.row * xw.ch + 2*BORDER;
1124 xw.w = term.col * xw.cw + 2*BORDER;
1125 xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
1129 xw.bufw = xw.w - 2*BORDER;
1130 xw.bufh = xw.h - 2*BORDER;
1131 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1133 dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
1134 XMapWindow(xw.dis, xw.win);
1136 XStoreName(xw.dis, xw.win, "st");
1141 xdraws(char *s, Glyph base, int x, int y, int len) {
1142 unsigned long xfg, xbg;
1143 int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*xw.cw;
1146 if(base.mode & ATTR_REVERSE)
1147 xfg = dc.col[base.bg], xbg = dc.col[base.fg];
1149 xfg = dc.col[base.fg], xbg = dc.col[base.bg];
1151 XSetBackground(xw.dis, dc.gc, xbg);
1152 XSetForeground(xw.dis, dc.gc, xfg);
1154 if(base.mode & ATTR_GFX)
1155 for(i = 0; i < len; i++)
1156 s[i] = gfx[(int)s[i]];
1158 XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1159 XDrawImageString(xw.dis, xw.buf, dc.gc, winx, winy, s, len);
1161 if(base.mode & ATTR_UNDERLINE)
1162 XDrawLine(xw.dis, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
1167 static int oldx = 0;
1168 static int oldy = 0;
1169 Glyph g = {' ', ATTR_NULL, DefaultBG, DefaultCS, 0};
1171 LIMIT(oldx, 0, term.col-1);
1172 LIMIT(oldy, 0, term.row-1);
1174 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
1175 g.c = term.line[term.c.y][term.c.x].c;
1177 /* remove the old cursor */
1178 if(term.line[oldy][oldx].state & GLYPH_SET)
1179 xdraws(&term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1);
1181 xclear(oldx, oldy, oldx, oldy);
1183 /* draw the new one */
1184 if(mode == CURSOR_DRAW) {
1185 xdraws(&g.c, g, term.c.x, term.c.y, 1);
1186 oldx = term.c.x, oldy = term.c.y;
1191 /* basic drawing routines */
1193 xdrawc(int x, int y, Glyph g) {
1194 XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
1195 XSetBackground(xw.dis, dc.gc, dc.col[g.bg]);
1196 XSetForeground(xw.dis, dc.gc, dc.col[g.fg]);
1197 XSetFont(xw.dis, dc.gc, g.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1198 XDrawImageString(xw.dis, xw.buf, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1);
1205 xclear(0, 0, term.col-1, term.row-1);
1206 for(y = 0; y < term.row; y++)
1207 for(x = 0; x < term.col; x++)
1208 if(term.line[y][x].state & GLYPH_SET)
1209 xdrawc(x, y, term.line[y][x]);
1212 xcursor(CURSOR_DRAW);
1213 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1218 /* optimized drawing routine */
1220 draw(int redraw_all) {
1223 char buf[DRAW_BUF_SIZ];
1225 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1226 XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
1227 for(y = 0; y < term.row; y++) {
1228 base = term.line[y][0];
1230 for(x = 0; x < term.col; x++) {
1231 new = term.line[y][x];
1232 if(!ATTRCMP(base, new) && i < DRAW_BUF_SIZ)
1235 xdraws(buf, base, ox, y, i);
1242 xdraws(buf, base, ox, y, i);
1244 xcursor(term.hidec ? CURSOR_HIDE : CURSOR_DRAW);
1245 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1252 expose(XEvent *ev) {
1253 draw(SCREEN_REDRAW);
1259 for(i = 0; i < LEN(key); i++)
1261 return (char*)key[i].s;
1266 kpress(XEvent *ev) {
1267 XKeyEvent *e = &ev->xkey;
1275 meta = e->state & Mod1Mask;
1276 shift = e->state & ShiftMask;
1277 len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
1279 if((customkey = kmap(ksym)))
1280 ttywrite(customkey, strlen(customkey));
1282 buf[sizeof(buf)-1] = '\0';
1283 if(meta && len == 1)
1284 ttywrite("\033", 1);
1292 sprintf(buf, "\033%c%c", term.mode & MODE_APPKEYPAD ? 'O' : '[', "DACB"[ksym - XK_Left]);
1297 draw(1), puts("draw!")/* XXX: paste X clipboard */;
1300 fprintf(stderr, "errkey: %d\n", (int)ksym);
1309 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
1312 xw.w = e->xconfigure.width;
1313 xw.h = e->xconfigure.height;
1314 xw.bufw = xw.w - 2*BORDER;
1315 xw.bufh = xw.h - 2*BORDER;
1316 col = xw.bufw / xw.cw;
1317 row = xw.bufh / xw.ch;
1319 ttyresize(col, row);
1320 XFreePixmap(xw.dis, xw.buf);
1321 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1322 draw(SCREEN_REDRAW);
1329 int xfd = XConnectionNumber(xw.dis);
1332 XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask | StructureNotifyMask);
1333 XResizeWindow(xw.dis, xw.win, xw.w, xw.h); /* XXX: fix resize bug in wmii (?) */
1337 FD_SET(cmdfd, &rfd);
1339 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) == -1) {
1342 die("select failed: %s\n", SERRNO);
1344 if(FD_ISSET(cmdfd, &rfd)) {
1346 draw(SCREEN_UPDATE);
1348 while(XPending(xw.dis)) {
1349 XNextEvent(xw.dis, &ev);
1350 if(handler[ev.type])
1351 (handler[ev.type])(&ev);
1357 main(int argc, char *argv[]) {
1358 if(argc == 2 && !strncmp("-v", argv[1], 3))
1359 die("st-" VERSION ", © 2009 st engineers\n");
1361 die("usage: st [-v]\n");
1362 setlocale(LC_CTYPE, "");