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 tputtab(void);
140 static void tputc(char);
141 static void tputs(char*, int);
142 static void treset(void);
143 static void tresize(int, int);
144 static void tscroll(void);
145 static void tscrollup(int);
146 static void tscrolldown(int);
147 static void tsetattr(int*, int);
148 static void tsetchar(char);
149 static void tsetscroll(int, int);
151 static void ttynew(void);
152 static void ttyread(void);
153 static void ttyresize(int, int);
154 static void ttywrite(const char *, size_t);
156 static void xbell(void);
157 static void xdraws(char *, Glyph, int, int, int);
158 static void xhints(void);
159 static void xclear(int, int, int, int);
160 static void xcursor(int);
161 static void xinit(void);
162 static void xloadcols(void);
164 static void expose(XEvent *);
165 static char* kmap(KeySym);
166 static void kpress(XEvent *);
167 static void resize(XEvent *);
169 static void (*handler[LASTEvent])(XEvent *) = {
172 [ConfigureNotify] = resize
179 static CSIEscape escseq;
190 for(row = 0; row < term.row; row++) {
191 for(col = 0; col < term.col; col++) {
192 if(col == term.c.x && row == term.c.y)
195 c = term.line[row][col];
196 putchar(c.state & GLYPH_SET ? c.c : '.');
205 die(const char *errstr, ...) {
208 va_start(ap, errstr);
209 vfprintf(stderr, errstr, ap);
216 char *args[3] = {getenv("SHELL"), "-i", NULL};
217 DEFAULT(args[0], "/bin/sh"); /* default shell if getenv() failed */
218 putenv("TERM=" TNAME);
219 execvp(args[0], args);
223 xbell(void) { /* visual bell */
224 XRectangle r = { BORDER, BORDER, xw.bufw, xw.bufh };
225 XSetForeground(xw.dis, dc.gc, dc.col[BellCol]);
226 XFillRectangles(xw.dis, xw.win, dc.gc, &r, 1);
234 if(waitpid(pid, &stat, 0) < 0)
235 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
237 exit(WEXITSTATUS(stat));
247 if((m = posix_openpt(O_RDWR | O_NOCTTY)) < 0)
248 die("openpt failed: %s\n", SERRNO);
250 die("grantpt failed: %s\n", SERRNO);
252 die("unlockpt failed: %s\n", SERRNO);
253 if(!(pts = ptsname(m)))
254 die("ptsname failed: %s\n", SERRNO);
255 if((s = open(pts, O_RDWR | O_NOCTTY)) < 0)
256 die("Couldn't open slave: %s\n", SERRNO);
257 fcntl(s, F_SETFL, O_NDELAY);
258 switch(pid = fork()) {
260 die("fork failed\n");
263 setsid(); /* create a new process group */
264 dup2(s, STDIN_FILENO);
265 dup2(s, STDOUT_FILENO);
266 dup2(s, STDERR_FILENO);
267 if(ioctl(s, TIOCSCTTY, NULL) < 0)
268 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
276 signal(SIGCHLD, sigchld);
283 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
285 fprintf(stderr, "\n");
290 char buf[BUFSIZ] = {0};
293 if((ret = read(cmdfd, buf, BUFSIZ)) < 0)
294 die("Couldn't read from shell: %s\n", SERRNO);
300 ttywrite(const char *s, size_t n) {
301 if(write(cmdfd, s, n) == -1)
302 die("write error on tty: %s\n", SERRNO);
306 ttyresize(int x, int y) {
311 w.ws_xpixel = w.ws_ypixel = 0;
312 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
313 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
320 if(mode == CURSOR_SAVE)
322 else if(mode == CURSOR_LOAD)
323 term.c = c, tmoveto(c.x, c.y);
328 term.c.attr.mode = ATTR_NULL;
329 term.c.attr.fg = DefaultFG;
330 term.c.attr.bg = DefaultBG;
331 term.c.x = term.c.y = 0;
333 term.top = 0, term.bot = term.row - 1;
334 term.mode = MODE_WRAP;
335 tclearregion(0, 0, term.col-1, term.row-1);
339 tnew(int col, int row) { /* screen size */
340 term.row = row, term.col = col;
341 term.top = 0, term.bot = term.row - 1;
343 term.mode = MODE_WRAP;
345 term.c.attr.mode = ATTR_NULL;
346 term.c.attr.fg = DefaultFG;
347 term.c.attr.bg = DefaultBG;
348 term.c.x = term.c.y = 0;
350 /* allocate screen */
351 term.line = calloc(term.row, sizeof(Line));
352 for(row = 0 ; row < term.row; row++)
353 term.line[row] = calloc(term.col, sizeof(Glyph));
356 /* TODO: Replace with scrollup/scolldown */
359 Line temp = term.line[term.top];
362 for(i = term.top; i < term.bot; i++)
363 term.line[i] = term.line[i+1];
364 memset(temp, 0, sizeof(Glyph) * term.col);
365 term.line[term.bot] = temp;
369 tscrolldown (int n) {
373 LIMIT(n, 0, term.bot-term.top+1);
375 for(i = 0; i < n; i++)
376 memset(term.line[term.bot-i], 0, term.col*sizeof(Glyph));
378 for(i = term.bot; i >= term.top+n; i--) {
380 term.line[i] = term.line[i-n];
381 term.line[i-n] = temp;
389 LIMIT(n, 0, term.bot-term.top+1);
391 for(i = 0; i < n; i++)
392 memset(term.line[term.top+i], 0, term.col*sizeof(Glyph));
394 for(i = term.top; i <= term.bot-n; i++) {
396 term.line[i] = term.line[i+n];
397 term.line[i+n] = temp;
403 int y = term.c.y + 1;
405 tscroll(), y = term.bot;
412 char *p = escseq.buf;
416 escseq.priv = 1, p++;
418 while(p < escseq.buf+escseq.len) {
420 escseq.arg[escseq.narg] *= 10;
421 escseq.arg[escseq.narg] += *p++ - '0'/*, noarg = 0 */;
423 if(*p == ';' && escseq.narg+1 < ESC_ARG_SIZ)
434 tmoveto(int x, int y) {
435 term.c.x = x < 0 ? 0 : x >= term.col ? term.col-1 : x;
436 term.c.y = y < 0 ? 0 : y >= term.row ? term.row-1 : y;
440 tmovecursor(int dir) {
441 int xf = term.c.x, yf = term.c.y;
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-n, term.c.y, term.col-1, term.c.y);
505 tinsertblank(int n) {
508 int size = term.col - dst;
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 - 1, 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 if (i + 2 < l && attr[i + 1] == 5) {
598 if (BETWEEN(attr[i], 0, 255))
599 term.c.attr.fg = attr[i];
601 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
604 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
607 term.c.attr.fg = DefaultFG;
610 if (i + 2 < l && attr[i + 1] == 5) {
612 if (BETWEEN(attr[i], 0, 255))
613 term.c.attr.bg = attr[i];
615 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
618 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
621 term.c.attr.bg = DefaultBG;
624 if(BETWEEN(attr[i], 30, 37))
625 term.c.attr.fg = attr[i] - 30;
626 else if(BETWEEN(attr[i], 40, 47))
627 term.c.attr.bg = attr[i] - 40;
628 else if(BETWEEN(attr[i], 90, 97))
629 term.c.attr.fg = attr[i] - 90 + 8;
630 else if(BETWEEN(attr[i], 100, 107))
631 term.c.attr.fg = attr[i] - 100 + 8;
633 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
640 tsetscroll(int t, int b) {
643 LIMIT(t, 0, term.row-1);
644 LIMIT(b, 0, term.row-1);
656 switch(escseq.mode) {
659 printf("erresc: unknown csi ");
663 case '@': /* ICH -- Insert <n> blank char */
664 DEFAULT(escseq.arg[0], 1);
665 tinsertblank(escseq.arg[0]);
667 case 'A': /* CUU -- Cursor <n> Up */
669 DEFAULT(escseq.arg[0], 1);
670 tmoveto(term.c.x, term.c.y-escseq.arg[0]);
672 case 'B': /* CUD -- Cursor <n> Down */
673 DEFAULT(escseq.arg[0], 1);
674 tmoveto(term.c.x, term.c.y+escseq.arg[0]);
676 case 'C': /* CUF -- Cursor <n> Forward */
678 DEFAULT(escseq.arg[0], 1);
679 tmoveto(term.c.x+escseq.arg[0], term.c.y);
681 case 'D': /* CUB -- Cursor <n> Backward */
682 DEFAULT(escseq.arg[0], 1);
683 tmoveto(term.c.x-escseq.arg[0], term.c.y);
685 case 'E': /* CNL -- Cursor <n> Down and first col */
686 DEFAULT(escseq.arg[0], 1);
687 tmoveto(0, term.c.y+escseq.arg[0]);
689 case 'F': /* CPL -- Cursor <n> Up and first col */
690 DEFAULT(escseq.arg[0], 1);
691 tmoveto(0, term.c.y-escseq.arg[0]);
693 case 'G': /* CHA -- Move to <col> */
694 case '`': /* XXX: HPA -- same? */
695 DEFAULT(escseq.arg[0], 1);
696 tmoveto(escseq.arg[0]-1, term.c.y);
698 case 'H': /* CUP -- Move to <row> <col> */
699 case 'f': /* XXX: HVP -- same? */
700 DEFAULT(escseq.arg[0], 1);
701 DEFAULT(escseq.arg[1], 1);
702 tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
704 /* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */
705 case 'J': /* ED -- Clear screen */
706 switch(escseq.arg[0]) {
708 tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
711 tclearregion(0, 0, term.c.x, term.c.y);
714 tclearregion(0, 0, term.col-1, term.row-1);
716 case 3: /* XXX: erase saved lines (xterm) */
721 case 'K': /* EL -- Clear line */
722 switch(escseq.arg[0]) {
724 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
727 tclearregion(0, term.c.y, term.c.x, term.c.y);
730 tclearregion(0, term.c.y, term.col-1, term.c.y);
734 case 'S': /* SU -- Scroll <n> line up */
735 DEFAULT(escseq.arg[0], 1);
736 tscrollup(escseq.arg[0]);
738 case 'T': /* SD -- Scroll <n> line down */
739 DEFAULT(escseq.arg[0], 1);
740 tscrolldown(escseq.arg[0]);
742 case 'L': /* IL -- Insert <n> blank lines */
743 DEFAULT(escseq.arg[0], 1);
744 tinsertblankline(escseq.arg[0]);
746 case 'l': /* RM -- Reset Mode */
748 switch(escseq.arg[0]) {
750 term.mode &= ~MODE_APPKEYPAD;
753 term.mode &= ~MODE_WRAP;
755 case 12: /* att610 -- Stop blinking cursor (IGNORED) */
760 case 1048: /* XXX: no alt. screen to erase/save */
762 tcursor(CURSOR_LOAD);
763 tclearregion(0, 0, term.col-1, term.row-1);
769 switch(escseq.arg[0]) {
771 term.mode &= ~MODE_INSERT;
778 case 'M': /* DL -- Delete <n> lines */
779 DEFAULT(escseq.arg[0], 1);
780 tdeleteline(escseq.arg[0]);
782 case 'X': /* ECH -- Erase <n> char */
783 DEFAULT(escseq.arg[0], 1);
784 tclearregion(term.c.x, term.c.y, term.c.x + escseq.arg[0], term.c.y);
786 case 'P': /* DCH -- Delete <n> char */
787 DEFAULT(escseq.arg[0], 1);
788 tdeletechar(escseq.arg[0]);
790 /* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation <n> tab stops */
791 case 'd': /* VPA -- Move to <row> */
792 DEFAULT(escseq.arg[0], 1);
793 tmoveto(term.c.x, escseq.arg[0]-1);
795 case 'h': /* SM -- Set terminal mode */
797 switch(escseq.arg[0]) {
799 term.mode |= MODE_APPKEYPAD;
802 term.mode |= MODE_WRAP;
804 case 12: /* att610 -- Start blinking cursor (IGNORED) */
810 case 1049: /* XXX: no alt. screen to erase/save */
811 tcursor(CURSOR_SAVE);
812 tclearregion(0, 0, term.col-1, term.row-1);
814 default: goto unknown;
817 switch(escseq.arg[0]) {
819 term.mode |= MODE_INSERT;
821 default: goto unknown;
825 case 'm': /* SGR -- Terminal attribute (color) */
826 tsetattr(escseq.arg, escseq.narg);
828 case 'r': /* DECSTBM -- Set Scrolling Region */
832 DEFAULT(escseq.arg[0], 1);
833 DEFAULT(escseq.arg[1], term.row);
834 tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
837 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
838 tcursor(CURSOR_SAVE);
840 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
841 tcursor(CURSOR_LOAD);
849 printf("ESC [ %s", escseq.priv ? "? " : "");
851 for(i = 0; i < escseq.narg; i++)
852 printf("%d ", escseq.arg[i]);
854 putchar(escseq.mode);
860 memset(&escseq, 0, sizeof(escseq));
865 int space = TAB - term.c.x % TAB;
866 tmoveto(term.c.x + space, term.c.y);
871 if(term.esc & ESC_START) {
872 if(term.esc & ESC_CSI) {
873 escseq.buf[escseq.len++] = c;
874 if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
876 csiparse(), csihandle();
878 } else if(term.esc & ESC_OSC) {
881 term.esc = ESC_START | ESC_TITLE;
883 } else if(term.esc & ESC_TITLE) {
884 if(c == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
886 term.title[term.titlelen] = '\0';
887 XStoreName(xw.dis, xw.win, term.title);
889 term.title[term.titlelen++] = c;
891 } else if(term.esc & ESC_ALTCHARSET) {
893 case '0': /* Line drawing crap */
894 term.c.attr.mode |= ATTR_GFX;
896 case 'B': /* Back to regular text */
897 term.c.attr.mode &= ~ATTR_GFX;
900 printf("esc unhandled charset: ESC ( %c\n", c);
912 term.esc |= ESC_ALTCHARSET;
915 tmoveto(term.c.x, term.c.y-1);
919 tmoveto(term.c.x, term.c.y+1);
923 tmoveto(term.c.x+1, term.c.y);
926 case 'D': /* XXX: CUP (VT100) or IND (VT52) ... */
927 tmoveto(term.c.x-1, term.c.y);
930 case 'E': /* NEL -- Next line */
934 case 'M': /* RI -- Reverse index */
935 if(term.c.y == term.top)
938 tmoveto(term.c.x, term.c.y-1);
941 case 'c': /* RIS -- Reset to inital state */
945 case '=': /* DECPAM */
946 term.mode |= MODE_APPKEYPAD;
949 case '>': /* DECPNM */
950 term.mode &= ~MODE_APPKEYPAD;
954 tcursor(CURSOR_SAVE);
958 tcursor(CURSOR_LOAD);
962 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", c, isprint(c)?c:'.');
972 tmovecursor(CURSOR_LEFT);
975 tmoveto(0, term.c.y);
985 term.esc = ESC_START;
989 tmovecursor(CURSOR_RIGHT);
996 tputs(char *s, int len) {
997 for(; len > 0; len--)
1002 tresize(int col, int row) {
1005 int minrow = MIN(row, term.row);
1006 int mincol = MIN(col, term.col);
1008 if(col < 1 || row < 1)
1011 line = calloc(row, sizeof(Line));
1012 for(i = 0 ; i < row; i++)
1013 line[i] = calloc(col, sizeof(Glyph));
1015 for(i = 0 ; i < minrow; i++)
1016 memcpy(line[i], term.line[i], mincol * sizeof(Glyph));
1018 for(i = 0; i < term.row; i++)
1022 LIMIT(term.c.x, 0, col-1);
1023 LIMIT(term.c.y, 0, row-1);
1024 LIMIT(term.top, 0, row-1);
1025 LIMIT(term.bot, 0, row-1);
1029 term.col = col, term.row = row;
1036 Colormap cmap = DefaultColormap(xw.dis, xw.scr);
1037 unsigned long white = WhitePixel(xw.dis, xw.scr);
1039 for(i = 0; i < 16; i++) {
1040 if (!XAllocNamedColor(xw.dis, cmap, colorname[i], &color, &color)) {
1042 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1044 dc.col[i] = color.pixel;
1047 /* same colors as xterm */
1048 for(r = 0; r < 6; r++)
1049 for(g = 0; g < 6; g++)
1050 for(b = 0; b < 6; b++) {
1051 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1052 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1053 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1054 if (!XAllocColor(xw.dis, cmap, &color)) {
1056 fprintf(stderr, "Could not allocate color %d\n", i);
1058 dc.col[i] = color.pixel;
1062 for(r = 0; r < 24; r++, i++) {
1063 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1064 if (!XAllocColor(xw.dis, cmap, &color)) {
1066 fprintf(stderr, "Could not allocate color %d\n", i);
1068 dc.col[i] = color.pixel;
1073 xclear(int x1, int y1, int x2, int y2) {
1074 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1075 XFillRectangle(xw.dis, xw.buf, dc.gc,
1076 x1 * xw.cw, y1 * xw.ch,
1077 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1083 XClassHint class = {TNAME, TNAME};
1084 XWMHints wm = {.flags = InputHint, .input = 1};
1086 .flags = PSize | PResizeInc | PBaseSize,
1089 .height_inc = xw.ch,
1091 .base_height = 2*BORDER,
1092 .base_width = 2*BORDER,
1094 XSetWMProperties(xw.dis, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
1099 xw.dis = XOpenDisplay(NULL);
1100 xw.scr = XDefaultScreen(xw.dis);
1102 die("Can't open display\n");
1105 if(!(dc.font = XLoadQueryFont(xw.dis, FONT)) || !(dc.bfont = XLoadQueryFont(xw.dis, BOLDFONT)))
1106 die("Can't load font %s\n", dc.font ? BOLDFONT : FONT);
1108 /* XXX: Assuming same size for bold font */
1109 xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
1110 xw.ch = dc.font->ascent + dc.font->descent;
1115 term.c.attr.fg = DefaultFG;
1116 term.c.attr.bg = DefaultBG;
1117 term.c.attr.mode = ATTR_NULL;
1119 xw.h = term.row * xw.ch + 2*BORDER;
1120 xw.w = term.col * xw.cw + 2*BORDER;
1121 xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
1125 xw.bufw = xw.w - 2*BORDER;
1126 xw.bufh = xw.h - 2*BORDER;
1127 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1129 dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
1130 XMapWindow(xw.dis, xw.win);
1132 XStoreName(xw.dis, xw.win, "st");
1137 xdraws(char *s, Glyph base, int x, int y, int len) {
1138 unsigned long xfg, xbg;
1139 int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*xw.cw;
1142 if(base.mode & ATTR_REVERSE)
1143 xfg = dc.col[base.bg], xbg = dc.col[base.fg];
1145 xfg = dc.col[base.fg], xbg = dc.col[base.bg];
1147 XSetBackground(xw.dis, dc.gc, xbg);
1148 XSetForeground(xw.dis, dc.gc, xfg);
1150 if(base.mode & ATTR_GFX)
1151 for(i = 0; i < len; i++)
1152 s[i] = gfx[(int)s[i]];
1154 XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1155 XDrawImageString(xw.dis, xw.buf, dc.gc, winx, winy, s, len);
1157 if(base.mode & ATTR_UNDERLINE)
1158 XDrawLine(xw.dis, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
1163 static int oldx = 0;
1164 static int oldy = 0;
1165 Glyph g = {' ', ATTR_NULL, DefaultBG, DefaultCS, 0};
1167 LIMIT(oldx, 0, term.col-1);
1168 LIMIT(oldy, 0, term.row-1);
1170 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
1171 g.c = term.line[term.c.y][term.c.x].c;
1173 /* remove the old cursor */
1174 if(term.line[oldy][oldx].state & GLYPH_SET)
1175 xdraws(&term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1);
1177 xclear(oldx, oldy, oldx, oldy);
1179 /* draw the new one */
1180 if(mode == CURSOR_DRAW) {
1181 xdraws(&g.c, g, term.c.x, term.c.y, 1);
1182 oldx = term.c.x, oldy = term.c.y;
1187 /* basic drawing routines */
1189 xdrawc(int x, int y, Glyph g) {
1190 XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
1191 XSetBackground(xw.dis, dc.gc, dc.col[g.bg]);
1192 XSetForeground(xw.dis, dc.gc, dc.col[g.fg]);
1193 XSetFont(xw.dis, dc.gc, g.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1194 XDrawImageString(xw.dis, xw.buf, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1);
1201 xclear(0, 0, term.col-1, term.row-1);
1202 for(y = 0; y < term.row; y++)
1203 for(x = 0; x < term.col; x++)
1204 if(term.line[y][x].state & GLYPH_SET)
1205 xdrawc(x, y, term.line[y][x]);
1208 xcursor(CURSOR_DRAW);
1209 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1214 /* optimized drawing routine */
1216 draw(int redraw_all) {
1219 char buf[DRAW_BUF_SIZ];
1221 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1222 XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
1223 for(y = 0; y < term.row; y++) {
1224 base = term.line[y][0];
1226 for(x = 0; x < term.col; x++) {
1227 new = term.line[y][x];
1228 if(!ATTRCMP(base, new) && i < DRAW_BUF_SIZ)
1231 xdraws(buf, base, ox, y, i);
1238 xdraws(buf, base, ox, y, i);
1240 xcursor(term.hidec ? CURSOR_HIDE : CURSOR_DRAW);
1241 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1248 expose(XEvent *ev) {
1249 draw(SCREEN_REDRAW);
1255 for(i = 0; i < LEN(key); i++)
1257 return (char*)key[i].s;
1262 kpress(XEvent *ev) {
1263 XKeyEvent *e = &ev->xkey;
1271 meta = e->state & Mod1Mask;
1272 shift = e->state & ShiftMask;
1273 len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
1275 if((customkey = kmap(ksym)))
1276 ttywrite(customkey, strlen(customkey));
1278 buf[sizeof(buf)-1] = '\0';
1279 if(meta && len == 1)
1280 ttywrite("\033", 1);
1288 sprintf(buf, "\033%c%c", term.mode & MODE_APPKEYPAD ? 'O' : '[', "DACB"[ksym - XK_Left]);
1293 draw(1), puts("draw!")/* XXX: paste X clipboard */;
1296 fprintf(stderr, "errkey: %d\n", (int)ksym);
1305 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
1308 xw.w = e->xconfigure.width;
1309 xw.h = e->xconfigure.height;
1310 xw.bufw = xw.w - 2*BORDER;
1311 xw.bufh = xw.h - 2*BORDER;
1312 col = xw.bufw / xw.cw;
1313 row = xw.bufh / xw.ch;
1315 ttyresize(col, row);
1316 XFreePixmap(xw.dis, xw.buf);
1317 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1318 draw(SCREEN_REDRAW);
1325 int xfd = XConnectionNumber(xw.dis);
1328 XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask | StructureNotifyMask);
1329 XResizeWindow(xw.dis, xw.win, xw.w, xw.h); /* XXX: fix resize bug in wmii (?) */
1333 FD_SET(cmdfd, &rfd);
1335 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) == -1) {
1338 die("select failed: %s\n", SERRNO);
1340 if(FD_ISSET(cmdfd, &rfd)) {
1342 draw(SCREEN_UPDATE);
1344 while(XPending(xw.dis)) {
1345 XNextEvent(xw.dis, &ev);
1346 if(handler[ev.type])
1347 (handler[ev.type])(&ev);
1353 main(int argc, char *argv[]) {
1354 if(argc == 2 && !strncmp("-v", argv[1], 3))
1355 die("st-" VERSION ", © 2009 st engineers\n");
1357 die("usage: st [-v]\n");
1358 setlocale(LC_CTYPE, "");