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>
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, 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 ch; /* char height */
99 int cw; /* char width */
109 /* Drawing Context */
111 unsigned long col[LEN(colorname)];
117 static void die(const char *errstr, ...);
118 static void draw(int);
119 static void execsh(void);
120 static void sigchld(int);
121 static void run(void);
123 static void csidump(void);
124 static void csihandle(void);
125 static void csiparse(void);
126 static void csireset(void);
128 static void tclearregion(int, int, int, int);
129 static void tcursor(int);
130 static void tmovecursor(int);
131 static void tdeletechar(int);
132 static void tdeleteline(int);
133 static void tinsertblank(int);
134 static void tinsertblankline(int);
135 static void tmoveto(int, int);
136 static void tnew(int, int);
137 static void tnewline(void);
138 static void tputc(char);
139 static void tputs(char*, int);
140 static void treset(void);
141 static void tresize(int, int);
142 static void tscroll(void);
143 static void tscrollup(int);
144 static void tscrolldown(int);
145 static void tsetattr(int*, int);
146 static void tsetchar(char);
147 static void tsetscroll(int, int);
149 static void ttynew(void);
150 static void ttyread(void);
151 static void ttyresize(int, int);
152 static void ttywrite(const char *, size_t);
154 static unsigned long xgetcol(const char *);
155 static void xclear(int, int, int, int);
156 static void xcursor(int);
157 static void xinit(void);
159 static void expose(XEvent *);
160 static char* kmap(KeySym);
161 static void kpress(XEvent *);
162 static void resize(XEvent *);
164 static void (*handler[LASTEvent])(XEvent *) = {
167 [ConfigureNotify] = resize
174 static CSIEscape escseq;
185 for(row = 0; row < term.row; row++) {
186 for(col = 0; col < term.col; col++) {
187 if(col == term.c.x && row == term.c.y)
190 c = term.line[row][col];
191 putchar(c.state & GLYPH_SET ? c.c : '.');
200 die(const char *errstr, ...) {
203 va_start(ap, errstr);
204 vfprintf(stderr, errstr, ap);
211 char *shell = getenv("SHELL");
214 char *args[3] = {shell, "-i", NULL};
215 putenv("TERM=" TNAME);
220 xbell(void) { /* visual bell */
221 XRectangle r = { BORDER, BORDER, xw.w, xw.h };
222 XSetForeground(xw.dis, dc.gc, dc.col[BellCol]);
223 XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);
231 if(waitpid(pid, &stat, 0) < 0)
232 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
234 exit(WEXITSTATUS(stat));
244 if((m = posix_openpt(O_RDWR | O_NOCTTY)) < 0)
245 die("openpt failed: %s\n", SERRNO);
247 die("grandpt failed: %s\n", SERRNO);
249 die("unlockpt failed: %s\n", SERRNO);
250 if(!(pts = ptsname(m)))
251 die("ptsname failed: %s\n", SERRNO);
252 if((s = open(pts, O_RDWR | O_NOCTTY)) < 0)
253 die("Couldn't open slave: %s\n", SERRNO);
254 fcntl(s, F_SETFL, O_NDELAY);
255 switch(pid = fork()) {
257 die("fork failed\n");
260 setsid(); /* create a new process group */
261 dup2(s, STDIN_FILENO);
262 dup2(s, STDOUT_FILENO);
263 dup2(s, STDERR_FILENO);
264 if(ioctl(s, TIOCSCTTY, NULL) < 0)
265 die("ioctl TTIOCSTTY failed: %s\n", SERRNO);
271 signal(SIGCHLD, sigchld);
278 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
280 fprintf(stderr, "\n");
285 char buf[BUFSIZ] = {0};
288 if((ret = read(cmdfd, buf, BUFSIZ)) < 0)
289 die("Couldn't read from shell: %s\n", SERRNO);
295 ttywrite(const char *s, size_t n) {
296 if(write(cmdfd, s, n) == -1)
297 die("write error on tty: %s\n", SERRNO);
301 ttyresize(int x, int y) {
306 w.ws_xpixel = w.ws_ypixel = 0;
307 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
308 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
315 if(mode == CURSOR_SAVE)
317 else if(mode == CURSOR_LOAD)
318 term.c = c, tmoveto(c.x, c.y);
323 term.c.attr.mode = ATTR_NULL;
324 term.c.attr.fg = DefaultFG;
325 term.c.attr.bg = DefaultBG;
326 term.c.x = term.c.y = 0;
328 term.top = 0, term.bot = term.row - 1;
329 term.mode = MODE_WRAP;
330 tclearregion(0, 0, term.col-1, term.row-1);
334 tnew(int col, int row) { /* screen size */
335 term.row = row, term.col = col;
336 term.top = 0, term.bot = term.row - 1;
338 term.mode = MODE_WRAP;
340 term.c.attr.mode = ATTR_NULL;
341 term.c.attr.fg = DefaultFG;
342 term.c.attr.bg = DefaultBG;
343 term.c.x = term.c.y = 0;
345 /* allocate screen */
346 term.line = calloc(term.row, sizeof(Line));
347 for(row = 0 ; row < term.row; row++)
348 term.line[row] = calloc(term.col, sizeof(Glyph));
351 /* TODO: Replace with scrollup/scolldown */
354 Line temp = term.line[term.top];
357 for(i = term.top; i < term.bot; i++)
358 term.line[i] = term.line[i+1];
359 memset(temp, 0, sizeof(Glyph) * term.col);
360 term.line[term.bot] = temp;
364 tscrolldown (int n) {
368 LIMIT(n, 0, term.bot-term.top+1);
370 for(i = 0; i < n; i++)
371 memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph));
373 for(i = term.bot; i >= term.top+n; i--) {
375 term.line[i] = term.line[i-n];
376 term.line[i-n] = temp;
384 LIMIT(n, 0, term.bot-term.top+1);
386 for(i = 0; i < n; i++)
387 memset(term.line[term.top+i], 0, term.col*sizeof(Glyph));
389 for(i = term.top; i <= term.bot-n; i++) {
391 term.line[i] = term.line[i+n];
392 term.line[i+n] = temp;
398 int y = term.c.y + 1;
400 tscroll(), y = term.bot;
407 char *p = escseq.buf;
411 escseq.priv = 1, p++;
413 while(p < escseq.buf+escseq.len) {
415 escseq.arg[escseq.narg] *= 10;
416 escseq.arg[escseq.narg] += *p++ - '0'/*, noarg = 0 */;
418 if(*p == ';' && escseq.narg+1 < ESC_ARG_SIZ)
429 tmoveto(int x, int y) {
430 term.c.x = x < 0 ? 0 : x >= term.col ? term.col-1 : x;
431 term.c.y = y < 0 ? 0 : y >= term.row ? term.row-1 : y;
435 tmovecursor(int dir) {
436 int xf = term.c.x, yf = term.c.y;
447 if(term.mode & MODE_WRAP && xf < 0) {
448 xf = term.col-1, yf--;
450 yf = term.top, xf = 0;
455 if(term.mode & MODE_WRAP && xf >= term.col) {
458 yf = term.bot, tscroll();
467 term.line[term.c.y][term.c.x] = term.c.attr;
468 term.line[term.c.y][term.c.x].c = c;
469 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
473 tclearregion(int x1, int y1, int x2, int y2) {
477 temp = x1, x1 = x2, x2 = temp;
479 temp = y1, y1 = y2, y2 = temp;
481 LIMIT(x1, 0, term.col-1);
482 LIMIT(x2, 0, term.col-1);
483 LIMIT(y1, 0, term.row-1);
484 LIMIT(y2, 0, term.row-1);
486 for(y = y1; y <= y2; y++)
487 memset(&term.line[y][x1], 0, sizeof(Glyph)*(x2-x1+1));
492 int src = term.c.x + n;
494 int size = term.col - src;
496 if(src >= term.col) {
497 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
500 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
501 tclearregion(term.col-size, term.c.y, term.col-1, term.c.y);
505 tinsertblank(int n) {
508 int size = term.col - n - src;
510 if(dst >= term.col) {
511 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
514 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
515 tclearregion(src, term.c.y, dst, term.c.y);
519 tinsertblankline(int n) {
524 if(term.c.y > term.bot)
526 else if(term.c.y < term.top)
528 if(term.c.y + n >= bot) {
529 tclearregion(0, term.c.y, term.col-1, bot);
532 for(i = bot; i >= term.c.y+n; i--) {
533 /* swap deleted line <-> blanked line */
534 blank = term.line[i];
535 term.line[i] = term.line[i-n];
536 term.line[i-n] = blank;
538 memset(blank, 0, term.col * sizeof(Glyph));
548 if(term.c.y > term.bot)
550 else if(term.c.y < term.top)
552 if(term.c.y + n >= bot) {
553 tclearregion(0, term.c.y, term.col-1, bot);
556 for(i = term.c.y; i <= bot-n; i++) {
557 /* swap deleted line <-> blanked line */
558 blank = term.line[i];
559 term.line[i] = term.line[i+n];
560 term.line[i+n] = blank;
562 memset(blank, 0, term.col * sizeof(Glyph));
567 tsetattr(int *attr, int l) {
570 for(i = 0; i < l; i++) {
573 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);
574 term.c.attr.fg = DefaultFG;
575 term.c.attr.bg = DefaultBG;
578 term.c.attr.mode |= ATTR_BOLD;
581 term.c.attr.mode |= ATTR_UNDERLINE;
584 term.c.attr.mode |= ATTR_REVERSE;
587 term.c.attr.mode &= ~ATTR_BOLD;
590 term.c.attr.mode &= ~ATTR_UNDERLINE;
593 term.c.attr.mode &= ~ATTR_REVERSE;
596 term.c.attr.fg = DefaultFG;
599 term.c.attr.fg = DefaultBG;
602 if(BETWEEN(attr[i], 30, 37))
603 term.c.attr.fg = attr[i] - 30;
604 else if(BETWEEN(attr[i], 40, 47))
605 term.c.attr.bg = attr[i] - 40;
607 fprintf(stderr, "erresc: gfx attr %d unkown\n", attr[i]);
614 tsetscroll(int t, int b) {
617 LIMIT(t, 0, term.row-1);
618 LIMIT(b, 0, term.row-1);
630 switch(escseq.mode) {
633 printf("erresc: unknown csi ");
637 case '@': /* ICH -- Insert <n> blank char */
638 DEFAULT(escseq.arg[0], 1);
639 tinsertblank(escseq.arg[0]);
641 case 'A': /* CUU -- Cursor <n> Up */
643 DEFAULT(escseq.arg[0], 1);
644 tmoveto(term.c.x, term.c.y-escseq.arg[0]);
646 case 'B': /* CUD -- Cursor <n> Down */
647 DEFAULT(escseq.arg[0], 1);
648 tmoveto(term.c.x, term.c.y+escseq.arg[0]);
650 case 'C': /* CUF -- Cursor <n> Forward */
652 DEFAULT(escseq.arg[0], 1);
653 tmoveto(term.c.x+escseq.arg[0], term.c.y);
655 case 'D': /* CUB -- Cursor <n> Backward */
656 DEFAULT(escseq.arg[0], 1);
657 tmoveto(term.c.x-escseq.arg[0], term.c.y);
659 case 'E': /* CNL -- Cursor <n> Down and first col */
660 DEFAULT(escseq.arg[0], 1);
661 tmoveto(0, term.c.y+escseq.arg[0]);
663 case 'F': /* CPL -- Cursor <n> Up and first col */
664 DEFAULT(escseq.arg[0], 1);
665 tmoveto(0, term.c.y-escseq.arg[0]);
667 case 'G': /* CHA -- Move to <col> */
668 case '`': /* XXX: HPA -- same? */
669 DEFAULT(escseq.arg[0], 1);
670 tmoveto(escseq.arg[0]-1, term.c.y);
672 case 'H': /* CUP -- Move to <row> <col> */
673 case 'f': /* XXX: HVP -- same? */
674 DEFAULT(escseq.arg[0], 1);
675 DEFAULT(escseq.arg[1], 1);
676 tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
678 /* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */
679 case 'J': /* ED -- Clear screen */
680 switch(escseq.arg[0]) {
682 tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
685 tclearregion(0, 0, term.c.x, term.c.y);
688 tclearregion(0, 0, term.col-1, term.row-1);
690 case 3: /* XXX: erase saved lines (xterm) */
695 case 'K': /* EL -- Clear line */
696 switch(escseq.arg[0]) {
698 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
701 tclearregion(0, term.c.y, term.c.x, term.c.y);
704 tclearregion(0, term.c.y, term.col-1, term.c.y);
708 case 'S': /* SU -- Scroll <n> line up */
709 DEFAULT(escseq.arg[0], 1);
710 tscrollup(escseq.arg[0]);
712 case 'T': /* SD -- Scroll <n> line down */
713 DEFAULT(escseq.arg[0], 1);
714 tscrolldown(escseq.arg[0]);
716 case 'L': /* IL -- Insert <n> blank lines */
717 DEFAULT(escseq.arg[0], 1);
718 tinsertblankline(escseq.arg[0]);
720 case 'l': /* RM -- Reset Mode */
722 switch(escseq.arg[0]) {
724 term.mode &= ~MODE_APPKEYPAD;
727 term.mode &= ~MODE_WRAP;
729 case 12: /* att610 -- Stop blinking cursor (IGNORED) */
734 case 1048: /* XXX: no alt. screen to erase/save */
736 tcursor(CURSOR_LOAD);
737 tclearregion(0, 0, term.col-1, term.row-1);
743 switch(escseq.arg[0]) {
745 term.mode &= ~MODE_INSERT;
752 case 'M': /* DL -- Delete <n> lines */
753 DEFAULT(escseq.arg[0], 1);
754 tdeleteline(escseq.arg[0]);
756 case 'X': /* ECH -- Erase <n> char */
757 DEFAULT(escseq.arg[0], 1);
758 tclearregion(term.c.x, term.c.y, term.c.x + escseq.arg[0], term.c.y);
760 case 'P': /* DCH -- Delete <n> char */
761 DEFAULT(escseq.arg[0], 1);
762 tdeletechar(escseq.arg[0]);
764 /* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation <n> tab stops */
765 case 'd': /* VPA -- Move to <row> */
766 DEFAULT(escseq.arg[0], 1);
767 tmoveto(term.c.x, escseq.arg[0]-1);
769 case 'h': /* SM -- Set terminal mode */
771 switch(escseq.arg[0]) {
773 term.mode |= MODE_APPKEYPAD;
776 term.mode |= MODE_WRAP;
778 case 12: /* att610 -- Start blinking cursor (IGNORED) */
784 case 1049: /* XXX: no alt. screen to erase/save */
785 tcursor(CURSOR_SAVE);
786 tclearregion(0, 0, term.col-1, term.row-1);
788 default: goto unknown;
791 switch(escseq.arg[0]) {
793 term.mode |= MODE_INSERT;
795 default: goto unknown;
799 case 'm': /* SGR -- Terminal attribute (color) */
800 tsetattr(escseq.arg, escseq.narg);
802 case 'r': /* DECSTBM -- Set Scrolling Region */
806 DEFAULT(escseq.arg[0], 1);
807 DEFAULT(escseq.arg[1], term.row);
808 tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
811 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
812 tcursor(CURSOR_SAVE);
814 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
815 tcursor(CURSOR_LOAD);
823 printf("ESC [ %s", escseq.priv ? "? " : "");
825 for(i = 0; i < escseq.narg; i++)
826 printf("%d ", escseq.arg[i]);
828 putchar(escseq.mode);
834 memset(&escseq, 0, sizeof(escseq));
839 int space = TAB - term.c.x % TAB;
841 if(term.c.x + space >= term.col)
844 for(; space > 0; space--)
845 tmovecursor(CURSOR_RIGHT);
850 if(term.esc & ESC_START) {
851 if(term.esc & ESC_CSI) {
852 escseq.buf[escseq.len++] = c;
853 if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
855 csiparse(), csihandle();
857 } else if(term.esc & ESC_OSC) {
860 term.esc = ESC_START | ESC_TITLE;
862 } else if(term.esc & ESC_TITLE) {
863 if(c == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
865 term.title[term.titlelen] = '\0';
866 XStoreName(xw.dis, xw.win, term.title);
868 term.title[term.titlelen++] = c;
870 } else if(term.esc & ESC_ALTCHARSET) {
872 case '0': /* Line drawing crap */
873 term.c.attr.mode |= ATTR_GFX;
875 case 'B': /* Back to regular text */
876 term.c.attr.mode &= ~ATTR_GFX;
879 printf("esc unhandled charset: ESC ( %c\n", c);
891 term.esc |= ESC_ALTCHARSET;
894 tmoveto(term.c.x, term.c.y-1);
898 tmoveto(term.c.x, term.c.y+1);
902 tmoveto(term.c.x+1, term.c.y);
905 case 'D': /* XXX: CUP (VT100) or IND (VT52) ... */
906 tmoveto(term.c.x-1, term.c.y);
909 case 'E': /* NEL -- Next line */
913 case 'M': /* RI -- Reverse index */
914 if(term.c.y == term.top)
917 tmoveto(term.c.x, term.c.y-1);
920 case 'c': /* RIS -- Reset to inital state */
924 case '=': /* DECPAM */
925 term.mode |= MODE_APPKEYPAD;
928 case '>': /* DECPNM */
929 term.mode &= ~MODE_APPKEYPAD;
933 tcursor(CURSOR_SAVE);
937 tcursor(CURSOR_LOAD);
941 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", c, isprint(c)?c:'.');
951 tmovecursor(CURSOR_LEFT);
954 tmoveto(0, term.c.y);
964 term.esc = ESC_START;
968 tmovecursor(CURSOR_RIGHT);
975 tputs(char *s, int len) {
976 for(; len > 0; len--)
981 tresize(int col, int row) {
984 int minrow = MIN(row, term.row);
985 int mincol = MIN(col, term.col);
987 if(col < 1 || row < 1)
990 line = calloc(row, sizeof(Line));
991 for(i = 0 ; i < row; i++)
992 line[i] = calloc(col, sizeof(Glyph));
994 for(i = 0 ; i < minrow; i++)
995 memcpy(line[i], term.line[i], mincol * sizeof(Glyph));
997 for(i = 0; i < term.row; i++)
1001 LIMIT(term.c.x, 0, col-1);
1002 LIMIT(term.c.y, 0, row-1);
1003 LIMIT(term.top, 0, row-1);
1004 LIMIT(term.bot, 0, row-1);
1008 term.col = col, term.row = row;
1012 xgetcol(const char *s) {
1014 Colormap cmap = DefaultColormap(xw.dis, xw.scr);
1016 if(!XAllocNamedColor(xw.dis, cmap, s, &color, &color)) {
1017 color.pixel = WhitePixel(xw.dis, xw.scr);
1018 fprintf(stderr, "Could not allocate color '%s'\n", s);
1024 xclear(int x1, int y1, int x2, int y2) {
1025 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1026 XFillRectangle(xw.dis, xw.buf, dc.gc,
1027 x1 * xw.cw, y1 * xw.ch,
1028 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1036 char *args[] = {NULL};
1039 xw.dis = XOpenDisplay(NULL);
1040 xw.scr = XDefaultScreen(xw.dis);
1042 die("Can't open display\n");
1045 if(!(dc.font = XLoadQueryFont(xw.dis, FONT)) || !(dc.bfont = XLoadQueryFont(xw.dis, BOLDFONT)))
1046 die("Can't load font %s\n", dc.font ? BOLDFONT : FONT);
1048 /* XXX: Assuming same size for bold font */
1049 xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
1050 xw.ch = dc.font->ascent + dc.font->descent;
1053 for(i = 0; i < LEN(colorname); i++)
1054 dc.col[i] = xgetcol(colorname[i]);
1056 term.c.attr.fg = DefaultFG;
1057 term.c.attr.bg = DefaultBG;
1058 term.c.attr.mode = ATTR_NULL;
1060 xw.h = term.row * xw.ch;
1061 xw.w = term.col * xw.cw;
1062 xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
1063 xw.w + 2*BORDER, xw.h + 2*BORDER, 0,
1066 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.w, xw.h, XDefaultDepth(xw.dis, xw.scr));
1068 dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
1069 XMapWindow(xw.dis, xw.win);
1071 chint.res_name = TNAME, chint.res_class = TNAME;
1072 wmhint.input = 1, wmhint.flags = InputHint;
1073 shint.height_inc = xw.ch, shint.width_inc = xw.cw;
1074 shint.height = xw.h + 2*BORDER, shint.width = xw.w + 2*BORDER;
1075 shint.flags = PSize | PResizeInc;
1076 XSetWMProperties(xw.dis, xw.win, NULL, NULL, &args[0], 0, &shint, &wmhint, &chint);
1077 XStoreName(xw.dis, xw.win, TNAME);
1078 XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
1084 xdraws(char *s, Glyph base, int x, int y, int len) {
1085 unsigned long xfg, xbg;
1086 int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*xw.cw;
1089 if(base.mode & ATTR_REVERSE)
1090 xfg = dc.col[base.bg], xbg = dc.col[base.fg];
1092 xfg = dc.col[base.fg], xbg = dc.col[base.bg];
1094 XSetBackground(xw.dis, dc.gc, xbg);
1095 XSetForeground(xw.dis, dc.gc, xfg);
1097 if(base.mode & ATTR_GFX)
1098 for(i = 0; i < len; i++)
1101 XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1102 XDrawImageString(xw.dis, xw.buf, dc.gc, winx, winy, s, len);
1104 if(base.mode & ATTR_UNDERLINE)
1105 XDrawLine(xw.dis, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
1110 static int oldx = 0;
1111 static int oldy = 0;
1112 Glyph g = {' ', ATTR_NULL, DefaultBG, DefaultCS, 0};
1114 LIMIT(oldx, 0, term.col-1);
1115 LIMIT(oldy, 0, term.row-1);
1117 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
1118 g.c = term.line[term.c.y][term.c.x].c;
1120 /* remove the old cursor */
1121 if(term.line[oldy][oldx].state & GLYPH_SET)
1122 xdraws(&term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1);
1124 xclear(oldx, oldy, oldx, oldy);
1126 /* draw the new one */
1127 if(mode == CURSOR_DRAW) {
1128 xdraws(&g.c, g, term.c.x, term.c.y, 1);
1129 oldx = term.c.x, oldy = term.c.y;
1135 /* basic drawing routines */
1137 xdrawc(int x, int y, Glyph g) {
1138 XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
1139 XSetBackground(xw.dis, dc.gc, dc.col[g.bg]);
1140 XSetForeground(xw.dis, dc.gc, dc.col[g.fg]);
1141 XSetFont(xw.dis, dc.gc, g.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1142 XDrawImageString(xw.dis, xw.buf, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1);
1149 xclear(0, 0, term.col-1, term.row-1);
1150 for(y = 0; y < term.row; y++)
1151 for(x = 0; x < term.col; x++)
1152 if(term.line[y][x].state & GLYPH_SET)
1153 xdrawc(x, y, term.line[y][x]);
1156 xcursor(CURSOR_DRAW);
1157 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.w, xw.h, BORDER, BORDER);
1163 draw(int redraw_all) {
1166 char buf[DRAW_BUF_SIZ];
1168 for(y = 0; y < term.row; y++) {
1169 base = term.line[y][0];
1171 for(x = 0; x < term.col; x++) {
1172 new = term.line[y][x];
1173 if(!ATTRCMP(base, new) && i < DRAW_BUF_SIZ)
1176 xdraws(buf, base, ox, y, i);
1183 xdraws(buf, base, ox, y, i);
1185 xcursor(term.hidec ? CURSOR_HIDE : CURSOR_DRAW);
1186 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.w, xw.h, BORDER, BORDER);
1191 expose(XEvent *ev) {
1192 draw(SCREEN_REDRAW);
1198 for(i = 0; i < LEN(key); i++)
1200 return (char*)key[i].s;
1205 kpress(XEvent *ev) {
1206 XKeyEvent *e = &ev->xkey;
1214 meta = e->state & Mod1Mask;
1215 shift = e->state & ShiftMask;
1216 len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
1218 if(customkey = kmap(ksym))
1219 ttywrite(customkey, strlen(customkey));
1221 buf[sizeof(buf)-1] = '\0';
1222 if(meta && len == 1)
1223 ttywrite("\033", 1);
1231 sprintf(buf, "\033%c%c", term.mode & MODE_APPKEYPAD ? 'O' : '[', "DACB"[ksym - XK_Left]);
1236 draw(1), puts("draw!")/* XXX: paste X clipboard */;
1239 fprintf(stderr, "errkey: %d\n", (int)ksym);
1247 col = e->xconfigure.width / xw.cw;
1248 row = e->xconfigure.height / xw.ch;
1250 if(term.col != col || term.row != row) {
1252 ttyresize(col, row);
1253 xw.w = e->xconfigure.width;
1254 xw.h = e->xconfigure.height;
1255 XFreePixmap(xw.dis, xw.buf);
1256 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.w, xw.h, XDefaultDepth(xw.dis, xw.scr));
1257 draw(SCREEN_REDRAW);
1265 int xfd = XConnectionNumber(xw.dis);
1268 XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask | StructureNotifyMask);
1269 XResizeWindow(xw.dis, xw.win, xw.w+2*BORDER, xw.h+2*BORDER); /* fix resize bug in wmii (?) */
1273 FD_SET(cmdfd, &rfd);
1275 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) == -1) {
1278 die("select failed: %s\n", SERRNO);
1280 if(FD_ISSET(cmdfd, &rfd)) {
1282 draw(SCREEN_UPDATE);
1284 while(XPending(xw.dis)) {
1285 XNextEvent(xw.dis, &ev);
1286 if(handler[ev.type])
1287 (handler[ev.type])(&ev);
1293 main(int argc, char *argv[]) {
1294 if(argc == 2 && !strncmp("-v", argv[1], 3))
1295 die("st-" VERSION ", © 2009 st engineers\n");
1297 die("usage: st [-v]\n");
1298 setlocale(LC_CTYPE, "");