1 /* See LICENSE for licence details. */
2 #define _XOPEN_SOURCE 600
13 #include <sys/ioctl.h>
14 #include <sys/select.h>
16 #include <sys/types.h>
20 #include <X11/keysym.h>
21 #include <X11/Xutil.h>
25 #elif defined(OPENBSD)
27 #elif defined(FREEBSD)
32 #define ESC_TITLE_SIZ 256
33 #define ESC_BUF_SIZ 256
34 #define ESC_ARG_SIZ 16
35 #define DRAW_BUF_SIZ 1024
37 #define SERRNO strerror(errno)
38 #define MIN(a, b) ((a) < (b) ? (a) : (b))
39 #define MAX(a, b) ((a) < (b) ? (b) : (a))
40 #define LEN(a) (sizeof(a) / sizeof(a[0]))
41 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
42 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
43 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
44 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
45 #define IS_SET(flag) (term.mode & (flag))
47 /* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
48 enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 };
49 enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT, CURSOR_HIDE, CURSOR_DRAW,
50 CURSOR_SAVE, CURSOR_LOAD };
51 enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
52 enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4 };
53 enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
54 enum { SCREEN_UPDATE, SCREEN_REDRAW };
57 char c; /* character code */
58 char mode; /* attribute flags */
59 int fg; /* foreground */
60 int bg; /* background */
61 char state; /* state flags */
67 Glyph attr; /* current char attributes */
72 /* CSI Escape sequence structs */
73 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
75 char buf[ESC_BUF_SIZ]; /* raw string */
76 int len; /* raw string length */
79 int narg; /* nb of args */
83 /* Internal representation of the screen */
87 Line* line; /* screen */
88 TCursor c; /* cursor */
90 int top; /* top scroll limit */
91 int bot; /* bottom scroll limit */
92 int mode; /* terminal mode flags */
93 int esc; /* escape state flags */
94 char title[ESC_TITLE_SIZ];
98 /* Purely graphic info */
104 int w; /* window width */
105 int h; /* window height */
106 int bufw; /* pixmap width */
107 int bufh; /* pixmap height */
108 int ch; /* char height */
109 int cw; /* char width */
117 /* Drawing Context */
119 unsigned long col[256];
127 static void die(const char *errstr, ...);
128 static void draw(int);
129 static void execsh(void);
130 static void sigchld(int);
131 static void run(void);
133 static void csidump(void);
134 static void csihandle(void);
135 static void csiparse(void);
136 static void csireset(void);
138 static void tclearregion(int, int, int, int);
139 static void tcursor(int);
140 static void tdeletechar(int);
141 static void tdeleteline(int);
142 static void tinsertblank(int);
143 static void tinsertblankline(int);
144 static void tmoveto(int, int);
145 static void tnew(int, int);
146 static void tnewline(void);
147 static void tputtab(void);
148 static void tputc(char);
149 static void tputs(char*, int);
150 static void treset(void);
151 static void tresize(int, int);
152 static void tscroll(void);
153 static void tscrollup(int);
154 static void tscrolldown(int);
155 static void tsetattr(int*, int);
156 static void tsetchar(char);
157 static void tsetscroll(int, int);
159 static void ttynew(void);
160 static void ttyread(void);
161 static void ttyresize(int, int);
162 static void ttywrite(const char *, size_t);
164 static void xbell(void);
165 static void xdraws(char *, Glyph, int, int, int);
166 static void xhints(void);
167 static void xclear(int, int, int, int);
168 static void xcursor(int);
169 static void xinit(void);
170 static void xloadcols(void);
172 static void expose(XEvent *);
173 static char* kmap(KeySym);
174 static void kpress(XEvent *);
175 static void resize(XEvent *);
177 static void (*handler[LASTEvent])(XEvent *) = {
180 [ConfigureNotify] = resize
187 static CSIEscape escseq;
198 for(row = 0; row < term.row; row++) {
199 for(col = 0; col < term.col; col++) {
200 if(col == term.c.x && row == term.c.y)
203 c = term.line[row][col];
204 putchar(c.state & GLYPH_SET ? c.c : '.');
213 die(const char *errstr, ...) {
216 va_start(ap, errstr);
217 vfprintf(stderr, errstr, ap);
224 char *args[3] = {getenv("SHELL"), "-i", NULL};
225 DEFAULT(args[0], "/bin/sh"); /* default shell if getenv() failed */
226 putenv("TERM=" TNAME);
227 execvp(args[0], args);
231 xbell(void) { /* visual bell */
232 XRectangle r = { BORDER, BORDER, xw.bufw, xw.bufh };
233 XSetForeground(xw.dis, dc.gc, dc.col[BellCol]);
234 XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);
242 if(waitpid(pid, &stat, 0) < 0)
243 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
245 exit(WEXITSTATUS(stat));
254 /* seems to work fine on linux, openbsd and freebsd */
255 struct winsize w = {term.row, term.col, 0, 0};
256 if(openpty(&m, &s, NULL, NULL, &w) < 0)
257 die("openpty failed: %s\n", SERRNO);
259 switch(pid = fork()) {
261 die("fork failed\n");
264 setsid(); /* create a new process group */
265 dup2(s, STDIN_FILENO);
266 dup2(s, STDOUT_FILENO);
267 dup2(s, STDERR_FILENO);
268 if(ioctl(s, TIOCSCTTY, NULL) < 0)
269 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
277 signal(SIGCHLD, sigchld);
284 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
286 fprintf(stderr, "\n");
291 char buf[BUFSIZ] = {0};
294 if((ret = read(cmdfd, buf, BUFSIZ)) < 0)
295 die("Couldn't read from shell: %s\n", SERRNO);
301 ttywrite(const char *s, size_t n) {
302 if(write(cmdfd, s, n) == -1)
303 die("write error on tty: %s\n", SERRNO);
307 ttyresize(int x, int y) {
312 w.ws_xpixel = w.ws_ypixel = 0;
313 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
314 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
321 if(mode == CURSOR_SAVE)
323 else if(mode == CURSOR_LOAD)
324 term.c = c, tmoveto(c.x, c.y);
329 term.c.attr.mode = ATTR_NULL;
330 term.c.attr.fg = DefaultFG;
331 term.c.attr.bg = DefaultBG;
332 term.c.x = term.c.y = 0;
334 term.top = 0, term.bot = term.row - 1;
335 term.mode = MODE_WRAP;
336 tclearregion(0, 0, term.col-1, term.row-1);
340 tnew(int col, int row) {
342 term.row = row, term.col = col;
343 term.top = 0, term.bot = term.row - 1;
345 term.mode = MODE_WRAP;
347 term.c.attr.mode = ATTR_NULL;
348 term.c.attr.fg = DefaultFG;
349 term.c.attr.bg = DefaultBG;
350 term.c.x = term.c.y = 0;
352 /* allocate screen */
353 term.line = calloc(term.row, sizeof(Line));
354 for(row = 0 ; row < term.row; row++)
355 term.line[row] = calloc(term.col, sizeof(Glyph));
358 /* TODO: Replace with scrollup/scolldown */
361 Line temp = term.line[term.top];
364 for(i = term.top; i < term.bot; i++)
365 term.line[i] = term.line[i+1];
366 memset(temp, 0, sizeof(Glyph) * term.col);
367 term.line[term.bot] = temp;
371 tscrolldown (int n) {
375 LIMIT(n, 0, term.bot-term.top+1);
377 for(i = 0; i < n; i++)
378 memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph));
380 for(i = term.bot; i >= term.top+n; i--) {
382 term.line[i] = term.line[i-n];
383 term.line[i-n] = temp;
391 LIMIT(n, 0, term.bot-term.top+1);
393 for(i = 0; i < n; i++)
394 memset(term.line[term.top+i], 0, term.col*sizeof(Glyph));
396 for(i = term.top; i <= term.bot-n; i++) {
398 term.line[i] = term.line[i+n];
399 term.line[i+n] = temp;
405 int y = term.c.y + 1;
407 tscroll(), y = term.bot;
414 char *p = escseq.buf;
418 escseq.priv = 1, p++;
420 while(p < escseq.buf+escseq.len) {
422 escseq.arg[escseq.narg] *= 10;
423 escseq.arg[escseq.narg] += *p++ - '0'/*, noarg = 0 */;
425 if(*p == ';' && escseq.narg+1 < ESC_ARG_SIZ)
436 tmoveto(int x, int y) {
437 term.c.x = x < 0 ? 0 : x >= term.col ? term.col-1 : x;
438 term.c.y = y < 0 ? 0 : y >= term.row ? term.row-1 : y;
443 term.line[term.c.y][term.c.x] = term.c.attr;
444 term.line[term.c.y][term.c.x].c = c;
445 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
449 tclearregion(int x1, int y1, int x2, int y2) {
453 temp = x1, x1 = x2, x2 = temp;
455 temp = y1, y1 = y2, y2 = temp;
457 LIMIT(x1, 0, term.col-1);
458 LIMIT(x2, 0, term.col-1);
459 LIMIT(y1, 0, term.row-1);
460 LIMIT(y2, 0, term.row-1);
462 for(y = y1; y <= y2; y++)
463 memset(&term.line[y][x1], 0, sizeof(Glyph)*(x2-x1+1));
468 int src = term.c.x + n;
470 int size = term.col - src;
472 if(src >= term.col) {
473 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
476 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
477 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
481 tinsertblank(int n) {
484 int size = term.col - dst;
486 if(dst >= term.col) {
487 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
490 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
491 tclearregion(src, term.c.y, dst - 1, term.c.y);
495 tinsertblankline(int n) {
500 if(term.c.y > term.bot)
502 else if(term.c.y < term.top)
504 if(term.c.y + n >= bot) {
505 tclearregion(0, term.c.y, term.col-1, bot);
508 for(i = bot; i >= term.c.y+n; i--) {
509 /* swap deleted line <-> blanked line */
510 blank = term.line[i];
511 term.line[i] = term.line[i-n];
512 term.line[i-n] = blank;
514 memset(blank, 0, term.col * sizeof(Glyph));
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 = term.c.y; i <= bot-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));
543 tsetattr(int *attr, int l) {
546 for(i = 0; i < l; i++) {
549 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);
550 term.c.attr.fg = DefaultFG;
551 term.c.attr.bg = DefaultBG;
554 term.c.attr.mode |= ATTR_BOLD;
557 term.c.attr.mode |= ATTR_UNDERLINE;
560 term.c.attr.mode |= ATTR_REVERSE;
563 term.c.attr.mode &= ~ATTR_BOLD;
566 term.c.attr.mode &= ~ATTR_UNDERLINE;
569 term.c.attr.mode &= ~ATTR_REVERSE;
572 if (i + 2 < l && attr[i + 1] == 5) {
574 if (BETWEEN(attr[i], 0, 255))
575 term.c.attr.fg = attr[i];
577 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
580 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
583 term.c.attr.fg = DefaultFG;
586 if (i + 2 < l && attr[i + 1] == 5) {
588 if (BETWEEN(attr[i], 0, 255))
589 term.c.attr.bg = attr[i];
591 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
594 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
597 term.c.attr.bg = DefaultBG;
600 if(BETWEEN(attr[i], 30, 37))
601 term.c.attr.fg = attr[i] - 30;
602 else if(BETWEEN(attr[i], 40, 47))
603 term.c.attr.bg = attr[i] - 40;
604 else if(BETWEEN(attr[i], 90, 97))
605 term.c.attr.fg = attr[i] - 90 + 8;
606 else if(BETWEEN(attr[i], 100, 107))
607 term.c.attr.fg = attr[i] - 100 + 8;
609 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
616 tsetscroll(int t, int b) {
619 LIMIT(t, 0, term.row-1);
620 LIMIT(b, 0, term.row-1);
632 switch(escseq.mode) {
635 printf("erresc: unknown csi ");
639 case '@': /* ICH -- Insert <n> blank char */
640 DEFAULT(escseq.arg[0], 1);
641 tinsertblank(escseq.arg[0]);
643 case 'A': /* CUU -- Cursor <n> Up */
645 DEFAULT(escseq.arg[0], 1);
646 tmoveto(term.c.x, term.c.y-escseq.arg[0]);
648 case 'B': /* CUD -- Cursor <n> Down */
649 DEFAULT(escseq.arg[0], 1);
650 tmoveto(term.c.x, term.c.y+escseq.arg[0]);
652 case 'C': /* CUF -- Cursor <n> Forward */
654 DEFAULT(escseq.arg[0], 1);
655 tmoveto(term.c.x+escseq.arg[0], term.c.y);
657 case 'D': /* CUB -- Cursor <n> Backward */
658 DEFAULT(escseq.arg[0], 1);
659 tmoveto(term.c.x-escseq.arg[0], term.c.y);
661 case 'E': /* CNL -- Cursor <n> Down and first col */
662 DEFAULT(escseq.arg[0], 1);
663 tmoveto(0, term.c.y+escseq.arg[0]);
665 case 'F': /* CPL -- Cursor <n> Up and first col */
666 DEFAULT(escseq.arg[0], 1);
667 tmoveto(0, term.c.y-escseq.arg[0]);
669 case 'G': /* CHA -- Move to <col> */
670 case '`': /* XXX: HPA -- same? */
671 DEFAULT(escseq.arg[0], 1);
672 tmoveto(escseq.arg[0]-1, term.c.y);
674 case 'H': /* CUP -- Move to <row> <col> */
675 case 'f': /* XXX: HVP -- same? */
676 DEFAULT(escseq.arg[0], 1);
677 DEFAULT(escseq.arg[1], 1);
678 tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
680 /* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */
681 case 'J': /* ED -- Clear screen */
682 switch(escseq.arg[0]) {
684 tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
687 tclearregion(0, 0, term.c.x, term.c.y);
690 tclearregion(0, 0, term.col-1, term.row-1);
692 case 3: /* XXX: erase saved lines (xterm) */
697 case 'K': /* EL -- Clear line */
698 switch(escseq.arg[0]) {
700 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
703 tclearregion(0, term.c.y, term.c.x, term.c.y);
706 tclearregion(0, term.c.y, term.col-1, term.c.y);
710 case 'S': /* SU -- Scroll <n> line up */
711 DEFAULT(escseq.arg[0], 1);
712 tscrollup(escseq.arg[0]);
714 case 'T': /* SD -- Scroll <n> line down */
715 DEFAULT(escseq.arg[0], 1);
716 tscrolldown(escseq.arg[0]);
718 case 'L': /* IL -- Insert <n> blank lines */
719 DEFAULT(escseq.arg[0], 1);
720 tinsertblankline(escseq.arg[0]);
722 case 'l': /* RM -- Reset Mode */
724 switch(escseq.arg[0]) {
726 term.mode &= ~MODE_APPKEYPAD;
729 term.mode &= ~MODE_WRAP;
731 case 12: /* att610 -- Stop blinking cursor (IGNORED) */
736 case 1048: /* XXX: no alt. screen to erase/save */
738 tcursor(CURSOR_LOAD);
739 tclearregion(0, 0, term.col-1, term.row-1);
745 switch(escseq.arg[0]) {
747 term.mode &= ~MODE_INSERT;
754 case 'M': /* DL -- Delete <n> lines */
755 DEFAULT(escseq.arg[0], 1);
756 tdeleteline(escseq.arg[0]);
758 case 'X': /* ECH -- Erase <n> char */
759 DEFAULT(escseq.arg[0], 1);
760 tclearregion(term.c.x, term.c.y, term.c.x + escseq.arg[0], term.c.y);
762 case 'P': /* DCH -- Delete <n> char */
763 DEFAULT(escseq.arg[0], 1);
764 tdeletechar(escseq.arg[0]);
766 /* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation <n> tab stops */
767 case 'd': /* VPA -- Move to <row> */
768 DEFAULT(escseq.arg[0], 1);
769 tmoveto(term.c.x, escseq.arg[0]-1);
771 case 'h': /* SM -- Set terminal mode */
773 switch(escseq.arg[0]) {
775 term.mode |= MODE_APPKEYPAD;
778 term.mode |= MODE_WRAP;
780 case 12: /* att610 -- Start blinking cursor (IGNORED) */
786 case 1049: /* XXX: no alt. screen to erase/save */
787 tcursor(CURSOR_SAVE);
788 tclearregion(0, 0, term.col-1, term.row-1);
790 default: goto unknown;
793 switch(escseq.arg[0]) {
795 term.mode |= MODE_INSERT;
797 default: goto unknown;
801 case 'm': /* SGR -- Terminal attribute (color) */
802 tsetattr(escseq.arg, escseq.narg);
804 case 'r': /* DECSTBM -- Set Scrolling Region */
808 DEFAULT(escseq.arg[0], 1);
809 DEFAULT(escseq.arg[1], term.row);
810 tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
813 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
814 tcursor(CURSOR_SAVE);
816 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
817 tcursor(CURSOR_LOAD);
825 printf("ESC [ %s", escseq.priv ? "? " : "");
827 for(i = 0; i < escseq.narg; i++)
828 printf("%d ", escseq.arg[i]);
830 putchar(escseq.mode);
836 memset(&escseq, 0, sizeof(escseq));
841 int space = TAB - term.c.x % TAB;
842 tmoveto(term.c.x + space, term.c.y);
847 if(term.esc & ESC_START) {
848 if(term.esc & ESC_CSI) {
849 escseq.buf[escseq.len++] = c;
850 if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
852 csiparse(), csihandle();
854 } else if(term.esc & ESC_OSC) {
857 term.esc = ESC_START | ESC_TITLE;
859 } else if(term.esc & ESC_TITLE) {
860 if(c == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
862 term.title[term.titlelen] = '\0';
863 XStoreName(xw.dis, xw.win, term.title);
865 term.title[term.titlelen++] = c;
867 } else if(term.esc & ESC_ALTCHARSET) {
869 case '0': /* Line drawing crap */
870 term.c.attr.mode |= ATTR_GFX;
872 case 'B': /* Back to regular text */
873 term.c.attr.mode &= ~ATTR_GFX;
876 printf("esc unhandled charset: ESC ( %c\n", c);
888 term.esc |= ESC_ALTCHARSET;
891 tmoveto(term.c.x, term.c.y-1);
895 tmoveto(term.c.x, term.c.y+1);
899 tmoveto(term.c.x+1, term.c.y);
902 case 'D': /* XXX: CUP (VT100) or IND (VT52) ... */
903 tmoveto(term.c.x-1, term.c.y);
906 case 'E': /* NEL -- Next line */
910 case 'M': /* RI -- Reverse index */
911 if(term.c.y == term.top)
914 tmoveto(term.c.x, term.c.y-1);
917 case 'c': /* RIS -- Reset to inital state */
921 case '=': /* DECPAM */
922 term.mode |= MODE_APPKEYPAD;
925 case '>': /* DECPNM */
926 term.mode &= ~MODE_APPKEYPAD;
930 tcursor(CURSOR_SAVE);
934 tcursor(CURSOR_LOAD);
938 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", c, isprint(c)?c:'.');
948 tmoveto(term.c.x-1, term.c.y);
951 tmoveto(0, term.c.y);
961 term.esc = ESC_START;
965 if(term.c.x+1 < term.col) {
966 tmoveto(term.c.x+1, term.c.y);
967 } else if(IS_SET(MODE_WRAP))
975 tputs(char *s, int len) {
976 for(; len > 0; len--)
981 tresize(int col, int row) {
983 int minrow = MIN(row, term.row);
984 int mincol = MIN(col, term.col);
986 if(col < 1 || row < 1)
989 /* free uneeded rows */
990 for(i = row; i < term.row; i++)
993 /* resize to new height */
994 term.line = realloc(term.line, row * sizeof(Line));
996 /* resize each row to new width, zero-pad if needed */
997 for(i = 0; i < minrow; i++) {
998 term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
999 memset(term.line[i] + mincol, 0, (col - mincol) * sizeof(Glyph));
1002 /* allocate any new rows */
1003 for(/* i == minrow */; i < row; i++)
1004 term.line[i] = calloc(col, sizeof(Glyph));
1006 LIMIT(term.c.x, 0, col-1);
1007 LIMIT(term.c.y, 0, row-1);
1008 LIMIT(term.top, 0, row-1);
1009 LIMIT(term.bot, 0, row-1);
1012 term.col = col, term.row = row;
1019 Colormap cmap = DefaultColormap(xw.dis, xw.scr);
1020 unsigned long white = WhitePixel(xw.dis, xw.scr);
1022 for(i = 0; i < 16; i++) {
1023 if (!XAllocNamedColor(xw.dis, cmap, colorname[i], &color, &color)) {
1025 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1027 dc.col[i] = color.pixel;
1030 /* same colors as xterm */
1031 for(r = 0; r < 6; r++)
1032 for(g = 0; g < 6; g++)
1033 for(b = 0; b < 6; b++) {
1034 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1035 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1036 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1037 if (!XAllocColor(xw.dis, cmap, &color)) {
1039 fprintf(stderr, "Could not allocate color %d\n", i);
1041 dc.col[i] = color.pixel;
1045 for(r = 0; r < 24; r++, i++) {
1046 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1047 if (!XAllocColor(xw.dis, cmap, &color)) {
1049 fprintf(stderr, "Could not allocate color %d\n", i);
1051 dc.col[i] = color.pixel;
1056 xclear(int x1, int y1, int x2, int y2) {
1057 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1058 XFillRectangle(xw.dis, xw.buf, dc.gc,
1059 x1 * xw.cw, y1 * xw.ch,
1060 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1066 XClassHint class = {TNAME, TNAME};
1067 XWMHints wm = {.flags = InputHint, .input = 1};
1069 .flags = PSize | PResizeInc | PBaseSize,
1072 .height_inc = xw.ch,
1074 .base_height = 2*BORDER,
1075 .base_width = 2*BORDER,
1077 XSetWMProperties(xw.dis, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
1082 if(!(xw.dis = XOpenDisplay(NULL)))
1083 die("Can't open display\n");
1084 xw.scr = XDefaultScreen(xw.dis);
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, "");