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__) || defined(__NetBSD__)
27 #elif defined(__FreeBSD__) || defined(__DragonFly__)
32 "st-" VERSION ", (c) 2010 st engineers\n" \
33 "usage: st [-t title] [-e cmd] [-v]\n"
36 #define ESC_TITLE_SIZ 256
37 #define ESC_BUF_SIZ 256
38 #define ESC_ARG_SIZ 16
39 #define DRAW_BUF_SIZ 1024
41 #define SERRNO strerror(errno)
42 #define MIN(a, b) ((a) < (b) ? (a) : (b))
43 #define MAX(a, b) ((a) < (b) ? (b) : (a))
44 #define LEN(a) (sizeof(a) / sizeof(a[0]))
45 #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
46 #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
47 #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
48 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
49 #define IS_SET(flag) (term.mode & (flag))
51 /* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
52 enum { ATTR_NULL=0 , ATTR_REVERSE=1 , ATTR_UNDERLINE=2, ATTR_BOLD=4, ATTR_GFX=8 };
53 enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT,
54 CURSOR_SAVE, CURSOR_LOAD };
55 enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 };
56 enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
57 enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8 };
58 enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
59 enum { SCREEN_UPDATE, SCREEN_REDRAW };
62 char c; /* character code */
63 char mode; /* attribute flags */
64 int fg; /* foreground */
65 int bg; /* background */
66 char state; /* state flags */
72 Glyph attr; /* current char attributes */
78 /* CSI Escape sequence structs */
79 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
81 char buf[ESC_BUF_SIZ]; /* raw string */
82 int len; /* raw string length */
85 int narg; /* nb of args */
89 /* Internal representation of the screen */
93 Line* line; /* screen */
94 Line* alt; /* alternate screen */
95 TCursor c; /* cursor */
96 int top; /* top scroll limit */
97 int bot; /* bottom scroll limit */
98 int mode; /* terminal mode flags */
99 int esc; /* escape state flags */
100 char title[ESC_TITLE_SIZ];
104 /* Purely graphic info */
110 int w; /* window width */
111 int h; /* window height */
112 int bufw; /* pixmap width */
113 int bufh; /* pixmap height */
114 int ch; /* char height */
115 int cw; /* char width */
124 /* Drawing Context */
126 unsigned long col[256];
132 /* TODO: use better name for vars... */
137 struct {int x, y;} b, e;
143 static void die(const char *errstr, ...);
144 static void draw(int);
145 static void execsh(void);
146 static void sigchld(int);
147 static void run(void);
149 static void csidump(void);
150 static void csihandle(void);
151 static void csiparse(void);
152 static void csireset(void);
154 static void tclearregion(int, int, int, int);
155 static void tcursor(int);
156 static void tdeletechar(int);
157 static void tdeleteline(int);
158 static void tinsertblank(int);
159 static void tinsertblankline(int);
160 static void tmoveto(int, int);
161 static void tnew(int, int);
162 static void tnewline(void);
163 static void tputtab(void);
164 static void tputc(char);
165 static void tputs(char*, int);
166 static void treset(void);
167 static void tresize(int, int);
168 static void tscrollup(int, int);
169 static void tscrolldown(int, int);
170 static void tsetattr(int*, int);
171 static void tsetchar(char);
172 static void tsetscroll(int, int);
173 static void tswapscreen(void);
175 static void ttynew(void);
176 static void ttyread(void);
177 static void ttyresize(int, int);
178 static void ttywrite(const char *, size_t);
180 static void xdraws(char *, Glyph, int, int, int);
181 static void xhints(void);
182 static void xclear(int, int, int, int);
183 static void xdrawcursor(void);
184 static void xinit(void);
185 static void xloadcols(void);
186 static void xseturgency(int);
188 static void expose(XEvent *);
189 static char* kmap(KeySym);
190 static void kpress(XEvent *);
191 static void resize(XEvent *);
192 static void focus(XEvent *);
193 static void brelease(XEvent *);
194 static void bpress(XEvent *);
195 static void bmotion(XEvent *);
198 static void (*handler[LASTEvent])(XEvent *) = {
201 [ConfigureNotify] = resize,
204 [MotionNotify] = bmotion,
205 [ButtonPress] = bpress,
206 [ButtonRelease] = brelease,
213 static CSIEscape escseq;
216 static Selection sel;
217 static char *opt_cmd = NULL;
218 static char *opt_title = NULL;
227 static inline int selected(int x, int y) {
228 if(sel.ey == y && sel.by == y) {
229 int bx = MIN(sel.bx, sel.ex);
230 int ex = MAX(sel.bx, sel.ex);
231 return BETWEEN(x, bx, ex);
233 return ((sel.b.y < y&&y < sel.e.y) || (y==sel.e.y && x<=sel.e.x))
234 || (y==sel.b.y && x>=sel.b.x && (x<=sel.e.x || sel.b.y!=sel.e.y));
237 static void getbuttoninfo(XEvent *e, int *b, int *x, int *y) {
238 if(b) *b = e->xbutton.state,
239 *b=*b==4096?5:*b==2048?4:*b==1024?3:*b==512?2:*b==256?1:-1;
240 *x = e->xbutton.x/xw.cw;
241 *y = e->xbutton.y/xw.ch;
242 sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex;
243 sel.b.y = MIN(sel.by, sel.ey);
244 sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx;
245 sel.e.y = MAX(sel.by, sel.ey);
248 static void bpress(XEvent *e) {
250 sel.ex = sel.bx = e->xbutton.x/xw.cw;
251 sel.ey = sel.by = e->xbutton.y/xw.ch;
254 static char *getseltext() {
259 sz = (term.col+1) * (sel.e.y-sel.b.y+1);
260 ptr = str = malloc(sz);
261 for(y = 0; y < term.row; y++) {
262 for(x = 0; x < term.col; x++)
263 if(term.line[y][x].state & GLYPH_SET && (ls = selected(x, y)))
264 *ptr = term.line[y][x].c, ptr++;
272 /* TODO: use X11 clipboard */
273 static void selcopy(char *str) {
278 static void selpaste() {
280 ttywrite(sel.clip, strlen(sel.clip));
283 /* TODO: doubleclick to select word */
284 static void brelease(XEvent *e) {
287 getbuttoninfo(e, &b, &sel.ex, &sel.ey);
288 if(sel.bx==sel.ex && sel.by==sel.ey) {
294 selcopy(getseltext());
299 static void bmotion(XEvent *e) {
301 getbuttoninfo(e, NULL, &sel.ex, &sel.ey);
312 for(row = 0; row < term.row; row++) {
313 for(col = 0; col < term.col; col++) {
314 if(col == term.c.x && row == term.c.y)
317 c = term.line[row][col];
318 putchar(c.state & GLYPH_SET ? c.c : '.');
327 die(const char *errstr, ...) {
330 va_start(ap, errstr);
331 vfprintf(stderr, errstr, ap);
338 char *args[] = {getenv("SHELL"), "-i", NULL};
340 args[0] = opt_cmd, args[1] = NULL;
342 DEFAULT(args[0], SHELL);
343 putenv("TERM="TNAME);
344 execvp(args[0], args);
350 if(waitpid(pid, &stat, 0) < 0)
351 die("Waiting for pid %hd failed: %s\n", pid, SERRNO);
353 exit(WEXITSTATUS(stat));
362 /* seems to work fine on linux, openbsd and freebsd */
363 struct winsize w = {term.row, term.col, 0, 0};
364 if(openpty(&m, &s, NULL, NULL, &w) < 0)
365 die("openpty failed: %s\n", SERRNO);
367 switch(pid = fork()) {
369 die("fork failed\n");
372 setsid(); /* create a new process group */
373 dup2(s, STDIN_FILENO);
374 dup2(s, STDOUT_FILENO);
375 dup2(s, STDERR_FILENO);
376 if(ioctl(s, TIOCSCTTY, NULL) < 0)
377 die("ioctl TIOCSCTTY failed: %s\n", SERRNO);
385 signal(SIGCHLD, sigchld);
392 fprintf(stderr, " %02x '%c' ", c, isprint(c)?c:'.');
394 fprintf(stderr, "\n");
402 if((ret = read(cmdfd, buf, LEN(buf))) < 0)
403 die("Couldn't read from shell: %s\n", SERRNO);
409 ttywrite(const char *s, size_t n) {
410 if(write(cmdfd, s, n) == -1)
411 die("write error on tty: %s\n", SERRNO);
415 ttyresize(int x, int y) {
420 w.ws_xpixel = w.ws_ypixel = 0;
421 if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
422 fprintf(stderr, "Couldn't set window size: %s\n", SERRNO);
429 if(mode == CURSOR_SAVE)
431 else if(mode == CURSOR_LOAD)
432 term.c = c, tmoveto(c.x, c.y);
441 }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
443 term.top = 0, term.bot = term.row - 1;
444 term.mode = MODE_WRAP;
445 tclearregion(0, 0, term.col-1, term.row-1);
449 tnew(int col, int row) {
450 /* set screen size */
451 term.row = row, term.col = col;
452 term.line = malloc(term.row * sizeof(Line));
453 term.alt = malloc(term.row * sizeof(Line));
454 for(row = 0 ; row < term.row; row++) {
455 term.line[row] = malloc(term.col * sizeof(Glyph));
456 term.alt [row] = malloc(term.col * sizeof(Glyph));
464 Line* tmp = term.line;
465 term.line = term.alt;
467 term.mode ^= MODE_ALTSCREEN;
471 tscrolldown(int orig, int n) {
475 LIMIT(n, 0, term.bot-orig+1);
477 tclearregion(0, term.bot-n+1, term.col-1, term.bot);
479 for(i = term.bot; i >= orig+n; i--) {
481 term.line[i] = term.line[i-n];
482 term.line[i-n] = temp;
487 tscrollup(int orig, int n) {
490 LIMIT(n, 0, term.bot-orig+1);
492 tclearregion(0, orig, term.col-1, orig+n-1);
494 for(i = orig; i <= term.bot-n; i++) {
496 term.line[i] = term.line[i+n];
497 term.line[i+n] = temp;
504 if(term.c.y == term.bot)
505 tscrollup(term.top, 1);
514 char *p = escseq.buf;
518 escseq.priv = 1, p++;
520 while(p < escseq.buf+escseq.len) {
522 escseq.arg[escseq.narg] *= 10;
523 escseq.arg[escseq.narg] += *p++ - '0'/*, noarg = 0 */;
525 if(*p == ';' && escseq.narg+1 < ESC_ARG_SIZ)
536 tmoveto(int x, int y) {
537 LIMIT(x, 0, term.col-1);
538 LIMIT(y, 0, term.row-1);
539 term.c.state &= ~CURSOR_WRAPNEXT;
546 term.line[term.c.y][term.c.x] = term.c.attr;
547 term.line[term.c.y][term.c.x].c = c;
548 term.line[term.c.y][term.c.x].state |= GLYPH_SET;
552 tclearregion(int x1, int y1, int x2, int y2) {
556 temp = x1, x1 = x2, x2 = temp;
558 temp = y1, y1 = y2, y2 = temp;
560 LIMIT(x1, 0, term.col-1);
561 LIMIT(x2, 0, term.col-1);
562 LIMIT(y1, 0, term.row-1);
563 LIMIT(y2, 0, term.row-1);
565 for(y = y1; y <= y2; y++)
566 memset(&term.line[y][x1], 0, sizeof(Glyph)*(x2-x1+1));
571 int src = term.c.x + n;
573 int size = term.col - src;
575 if(src >= term.col) {
576 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
579 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
580 tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
584 tinsertblank(int n) {
587 int size = term.col - dst;
589 if(dst >= term.col) {
590 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
593 memmove(&term.line[term.c.y][dst], &term.line[term.c.y][src], size * sizeof(Glyph));
594 tclearregion(src, term.c.y, dst - 1, term.c.y);
598 tinsertblankline(int n) {
599 if(term.c.y < term.top || term.c.y > term.bot)
602 tscrolldown(term.c.y, n);
607 if(term.c.y < term.top || term.c.y > term.bot)
610 tscrollup(term.c.y, n);
614 tsetattr(int *attr, int l) {
617 for(i = 0; i < l; i++) {
620 term.c.attr.mode &= ~(ATTR_REVERSE | ATTR_UNDERLINE | ATTR_BOLD);
621 term.c.attr.fg = DefaultFG;
622 term.c.attr.bg = DefaultBG;
625 term.c.attr.mode |= ATTR_BOLD;
628 term.c.attr.mode |= ATTR_UNDERLINE;
631 term.c.attr.mode |= ATTR_REVERSE;
634 term.c.attr.mode &= ~ATTR_BOLD;
637 term.c.attr.mode &= ~ATTR_UNDERLINE;
640 term.c.attr.mode &= ~ATTR_REVERSE;
643 if (i + 2 < l && attr[i + 1] == 5) {
645 if (BETWEEN(attr[i], 0, 255))
646 term.c.attr.fg = attr[i];
648 fprintf(stderr, "erresc: bad fgcolor %d\n", attr[i]);
651 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
654 term.c.attr.fg = DefaultFG;
657 if (i + 2 < l && attr[i + 1] == 5) {
659 if (BETWEEN(attr[i], 0, 255))
660 term.c.attr.bg = attr[i];
662 fprintf(stderr, "erresc: bad bgcolor %d\n", attr[i]);
665 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]);
668 term.c.attr.bg = DefaultBG;
671 if(BETWEEN(attr[i], 30, 37))
672 term.c.attr.fg = attr[i] - 30;
673 else if(BETWEEN(attr[i], 40, 47))
674 term.c.attr.bg = attr[i] - 40;
675 else if(BETWEEN(attr[i], 90, 97))
676 term.c.attr.fg = attr[i] - 90 + 8;
677 else if(BETWEEN(attr[i], 100, 107))
678 term.c.attr.fg = attr[i] - 100 + 8;
680 fprintf(stderr, "erresc: gfx attr %d unknown\n", attr[i]), csidump();
688 tsetscroll(int t, int b) {
691 LIMIT(t, 0, term.row-1);
692 LIMIT(b, 0, term.row-1);
704 switch(escseq.mode) {
707 printf("erresc: unknown csi ");
711 case '@': /* ICH -- Insert <n> blank char */
712 DEFAULT(escseq.arg[0], 1);
713 tinsertblank(escseq.arg[0]);
715 case 'A': /* CUU -- Cursor <n> Up */
717 DEFAULT(escseq.arg[0], 1);
718 tmoveto(term.c.x, term.c.y-escseq.arg[0]);
720 case 'B': /* CUD -- Cursor <n> Down */
721 DEFAULT(escseq.arg[0], 1);
722 tmoveto(term.c.x, term.c.y+escseq.arg[0]);
724 case 'C': /* CUF -- Cursor <n> Forward */
726 DEFAULT(escseq.arg[0], 1);
727 tmoveto(term.c.x+escseq.arg[0], term.c.y);
729 case 'D': /* CUB -- Cursor <n> Backward */
730 DEFAULT(escseq.arg[0], 1);
731 tmoveto(term.c.x-escseq.arg[0], term.c.y);
733 case 'E': /* CNL -- Cursor <n> Down and first col */
734 DEFAULT(escseq.arg[0], 1);
735 tmoveto(0, term.c.y+escseq.arg[0]);
737 case 'F': /* CPL -- Cursor <n> Up and first col */
738 DEFAULT(escseq.arg[0], 1);
739 tmoveto(0, term.c.y-escseq.arg[0]);
741 case 'G': /* CHA -- Move to <col> */
742 case '`': /* XXX: HPA -- same? */
743 DEFAULT(escseq.arg[0], 1);
744 tmoveto(escseq.arg[0]-1, term.c.y);
746 case 'H': /* CUP -- Move to <row> <col> */
747 case 'f': /* XXX: HVP -- same? */
748 DEFAULT(escseq.arg[0], 1);
749 DEFAULT(escseq.arg[1], 1);
750 tmoveto(escseq.arg[1]-1, escseq.arg[0]-1);
752 /* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */
753 case 'J': /* ED -- Clear screen */
754 switch(escseq.arg[0]) {
756 tclearregion(term.c.x, term.c.y, term.col-1, term.row-1);
759 tclearregion(0, 0, term.c.x, term.c.y);
762 tclearregion(0, 0, term.col-1, term.row-1);
768 case 'K': /* EL -- Clear line */
769 switch(escseq.arg[0]) {
771 tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
774 tclearregion(0, term.c.y, term.c.x, term.c.y);
777 tclearregion(0, term.c.y, term.col-1, term.c.y);
781 case 'S': /* SU -- Scroll <n> line up */
782 DEFAULT(escseq.arg[0], 1);
783 tscrollup(term.top, escseq.arg[0]);
785 case 'T': /* SD -- Scroll <n> line down */
786 DEFAULT(escseq.arg[0], 1);
787 tscrolldown(term.top, escseq.arg[0]);
789 case 'L': /* IL -- Insert <n> blank lines */
790 DEFAULT(escseq.arg[0], 1);
791 tinsertblankline(escseq.arg[0]);
793 case 'l': /* RM -- Reset Mode */
795 switch(escseq.arg[0]) {
797 term.mode &= ~MODE_APPKEYPAD;
800 term.mode &= ~MODE_WRAP;
802 case 12: /* att610 -- Stop blinking cursor (IGNORED) */
805 term.c.state |= CURSOR_HIDE;
807 case 1049: /* = 1047 and 1048 */
809 if(IS_SET(MODE_ALTSCREEN)) {
810 tclearregion(0, 0, term.col-1, term.row-1);
813 if(escseq.arg[0] == 1047)
816 tcursor(CURSOR_LOAD);
822 switch(escseq.arg[0]) {
824 term.mode &= ~MODE_INSERT;
831 case 'M': /* DL -- Delete <n> lines */
832 DEFAULT(escseq.arg[0], 1);
833 tdeleteline(escseq.arg[0]);
835 case 'X': /* ECH -- Erase <n> char */
836 DEFAULT(escseq.arg[0], 1);
837 tclearregion(term.c.x, term.c.y, term.c.x + escseq.arg[0], term.c.y);
839 case 'P': /* DCH -- Delete <n> char */
840 DEFAULT(escseq.arg[0], 1);
841 tdeletechar(escseq.arg[0]);
843 /* XXX: (CSI n Z) CBT -- Cursor Backward Tabulation <n> tab stops */
844 case 'd': /* VPA -- Move to <row> */
845 DEFAULT(escseq.arg[0], 1);
846 tmoveto(term.c.x, escseq.arg[0]-1);
848 case 'h': /* SM -- Set terminal mode */
850 switch(escseq.arg[0]) {
852 term.mode |= MODE_APPKEYPAD;
855 term.mode |= MODE_WRAP;
857 case 12: /* att610 -- Start blinking cursor (IGNORED) */
858 /* fallthrough for xterm cvvis = CSI [ ? 12 ; 25 h */
859 if(escseq.narg > 1 && escseq.arg[1] != 25)
862 term.c.state &= ~CURSOR_HIDE;
864 case 1049: /* = 1047 and 1048 */
866 if(IS_SET(MODE_ALTSCREEN))
867 tclearregion(0, 0, term.col-1, term.row-1);
870 if(escseq.arg[0] == 1047)
873 tcursor(CURSOR_SAVE);
875 default: goto unknown;
878 switch(escseq.arg[0]) {
880 term.mode |= MODE_INSERT;
882 default: goto unknown;
886 case 'm': /* SGR -- Terminal attribute (color) */
887 tsetattr(escseq.arg, escseq.narg);
889 case 'r': /* DECSTBM -- Set Scrolling Region */
893 DEFAULT(escseq.arg[0], 1);
894 DEFAULT(escseq.arg[1], term.row);
895 tsetscroll(escseq.arg[0]-1, escseq.arg[1]-1);
899 case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
900 tcursor(CURSOR_SAVE);
902 case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
903 tcursor(CURSOR_LOAD);
911 printf("ESC [ %s", escseq.priv ? "? " : "");
913 for(i = 0; i < escseq.narg; i++)
914 printf("%d ", escseq.arg[i]);
916 putchar(escseq.mode);
922 memset(&escseq, 0, sizeof(escseq));
927 int space = TAB - term.c.x % TAB;
928 tmoveto(term.c.x + space, term.c.y);
933 if(term.esc & ESC_START) {
934 if(term.esc & ESC_CSI) {
935 escseq.buf[escseq.len++] = c;
936 if(BETWEEN(c, 0x40, 0x7E) || escseq.len >= ESC_BUF_SIZ) {
938 csiparse(), csihandle();
940 /* TODO: handle other OSC */
941 } else if(term.esc & ESC_OSC) {
944 term.esc = ESC_START | ESC_TITLE;
946 } else if(term.esc & ESC_TITLE) {
947 if(c == '\a' || term.titlelen+1 >= ESC_TITLE_SIZ) {
949 term.title[term.titlelen] = '\0';
950 XStoreName(xw.dis, xw.win, term.title);
952 term.title[term.titlelen++] = c;
954 } else if(term.esc & ESC_ALTCHARSET) {
956 case '0': /* Line drawing crap */
957 term.c.attr.mode |= ATTR_GFX;
959 case 'B': /* Back to regular text */
960 term.c.attr.mode &= ~ATTR_GFX;
963 printf("esc unhandled charset: ESC ( %c\n", c);
975 term.esc |= ESC_ALTCHARSET;
977 case 'D': /* IND -- Linefeed */
978 if(term.c.y == term.bot)
979 tscrollup(term.top, 1);
981 tmoveto(term.c.x, term.c.y+1);
984 case 'E': /* NEL -- Next line */
988 case 'M': /* RI -- Reverse index */
989 if(term.c.y == term.top)
990 tscrolldown(term.top, 1);
992 tmoveto(term.c.x, term.c.y-1);
995 case 'c': /* RIS -- Reset to inital state */
999 case '=': /* DECPAM -- Application keypad */
1000 term.mode |= MODE_APPKEYPAD;
1003 case '>': /* DECPNM -- Normal keypad */
1004 term.mode &= ~MODE_APPKEYPAD;
1007 case '7': /* DECSC -- Save Cursor */
1008 tcursor(CURSOR_SAVE);
1011 case '8': /* DECRC -- Restore Cursor */
1012 tcursor(CURSOR_LOAD);
1016 fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n", c, isprint(c)?c:'.');
1026 tmoveto(term.c.x-1, term.c.y);
1029 tmoveto(0, term.c.y);
1040 term.esc = ESC_START;
1043 if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
1046 if(term.c.x+1 < term.col)
1047 tmoveto(term.c.x+1, term.c.y);
1049 term.c.state |= CURSOR_WRAPNEXT;
1056 tputs(char *s, int len) {
1057 for(; len > 0; len--)
1062 tresize(int col, int row) {
1064 int minrow = MIN(row, term.row);
1065 int mincol = MIN(col, term.col);
1066 int slide = term.c.y - row + 1;
1068 if(col < 1 || row < 1)
1071 /* free unneeded rows */
1074 /* slide screen to keep cursor where we expect it -
1075 * tscrollup would work here, but we can optimize to
1076 * memmove because we're freeing the earlier lines */
1077 for(/* i = 0 */; i < slide; i++) {
1081 memmove(term.line, term.line + slide, row * sizeof(Line));
1082 memmove(term.alt, term.alt + slide, row * sizeof(Line));
1084 for(i += row; i < term.row; i++) {
1089 /* resize to new height */
1090 term.line = realloc(term.line, row * sizeof(Line));
1091 term.alt = realloc(term.alt, row * sizeof(Line));
1093 /* resize each row to new width, zero-pad if needed */
1094 for(i = 0; i < minrow; i++) {
1095 term.line[i] = realloc(term.line[i], col * sizeof(Glyph));
1096 term.alt[i] = realloc(term.alt[i], col * sizeof(Glyph));
1097 memset(term.line[i] + mincol, 0, (col - mincol) * sizeof(Glyph));
1098 memset(term.alt[i] + mincol, 0, (col - mincol) * sizeof(Glyph));
1101 /* allocate any new rows */
1102 for(/* i == minrow */; i < row; i++) {
1103 term.line[i] = calloc(col, sizeof(Glyph));
1104 term.alt [i] = calloc(col, sizeof(Glyph));
1107 /* update terminal size */
1108 term.col = col, term.row = row;
1109 /* make use of the LIMIT in tmoveto */
1110 tmoveto(term.c.x, term.c.y);
1111 /* reset scrolling region */
1112 tsetscroll(0, row-1);
1119 Colormap cmap = DefaultColormap(xw.dis, xw.scr);
1120 unsigned long white = WhitePixel(xw.dis, xw.scr);
1122 for(i = 0; i < 16; i++) {
1123 if (!XAllocNamedColor(xw.dis, cmap, colorname[i], &color, &color)) {
1125 fprintf(stderr, "Could not allocate color '%s'\n", colorname[i]);
1127 dc.col[i] = color.pixel;
1130 /* same colors as xterm */
1131 for(r = 0; r < 6; r++)
1132 for(g = 0; g < 6; g++)
1133 for(b = 0; b < 6; b++) {
1134 color.red = r == 0 ? 0 : 0x3737 + 0x2828 * r;
1135 color.green = g == 0 ? 0 : 0x3737 + 0x2828 * g;
1136 color.blue = b == 0 ? 0 : 0x3737 + 0x2828 * b;
1137 if (!XAllocColor(xw.dis, cmap, &color)) {
1139 fprintf(stderr, "Could not allocate color %d\n", i);
1141 dc.col[i] = color.pixel;
1145 for(r = 0; r < 24; r++, i++) {
1146 color.red = color.green = color.blue = 0x0808 + 0x0a0a * r;
1147 if (!XAllocColor(xw.dis, cmap, &color)) {
1149 fprintf(stderr, "Could not allocate color %d\n", i);
1151 dc.col[i] = color.pixel;
1156 xclear(int x1, int y1, int x2, int y2) {
1157 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1158 XFillRectangle(xw.dis, xw.buf, dc.gc,
1159 x1 * xw.cw, y1 * xw.ch,
1160 (x2-x1+1) * xw.cw, (y2-y1+1) * xw.ch);
1166 XClassHint class = {TNAME, TNAME};
1167 XWMHints wm = {.flags = InputHint, .input = 1};
1169 .flags = PSize | PResizeInc | PBaseSize,
1172 .height_inc = xw.ch,
1174 .base_height = 2*BORDER,
1175 .base_width = 2*BORDER,
1177 XSetWMProperties(xw.dis, xw.win, NULL, NULL, NULL, 0, &size, &wm, &class);
1182 if(!(xw.dis = XOpenDisplay(NULL)))
1183 die("Can't open display\n");
1184 xw.scr = XDefaultScreen(xw.dis);
1187 if(!(dc.font = XLoadQueryFont(xw.dis, FONT)) || !(dc.bfont = XLoadQueryFont(xw.dis, BOLDFONT)))
1188 die("Can't load font %s\n", dc.font ? BOLDFONT : FONT);
1190 /* XXX: Assuming same size for bold font */
1191 xw.cw = dc.font->max_bounds.rbearing - dc.font->min_bounds.lbearing;
1192 xw.ch = dc.font->ascent + dc.font->descent;
1198 xw.bufh = term.row * xw.ch;
1199 xw.bufw = term.col * xw.cw;
1200 xw.h = xw.bufh + 2*BORDER;
1201 xw.w = xw.bufw + 2*BORDER;
1202 xw.win = XCreateSimpleWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
1206 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1208 dc.gc = XCreateGC(xw.dis, xw.win, 0, NULL);
1211 XSelectInput(xw.dis, xw.win, ExposureMask | KeyPressMask
1212 | StructureNotifyMask | FocusChangeMask | PointerMotionMask
1213 | ButtonPressMask | ButtonReleaseMask);
1215 XMapWindow(xw.dis, xw.win);
1217 XStoreName(xw.dis, xw.win, opt_title ? opt_title : "st");
1222 xdraws(char *s, Glyph base, int x, int y, int len) {
1223 unsigned long xfg, xbg;
1224 int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*xw.cw;
1227 if(base.mode & ATTR_REVERSE)
1228 xfg = dc.col[base.bg], xbg = dc.col[base.fg];
1230 xfg = dc.col[base.fg], xbg = dc.col[base.bg];
1232 XSetBackground(xw.dis, dc.gc, xbg);
1233 XSetForeground(xw.dis, dc.gc, xfg);
1235 if(base.mode & ATTR_GFX)
1236 for(i = 0; i < len; i++) {
1237 char c = gfx[(unsigned int)s[i] % 256];
1240 else if(s[i] > 0x5f)
1244 XSetFont(xw.dis, dc.gc, base.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1245 XDrawImageString(xw.dis, xw.buf, dc.gc, winx, winy, s, len);
1247 if(base.mode & ATTR_UNDERLINE)
1248 XDrawLine(xw.dis, xw.buf, dc.gc, winx, winy+1, winx+width-1, winy+1);
1253 static int oldx = 0;
1254 static int oldy = 0;
1255 Glyph g = {' ', ATTR_NULL, DefaultBG, DefaultCS, 0};
1257 LIMIT(oldx, 0, term.col-1);
1258 LIMIT(oldy, 0, term.row-1);
1260 if(term.line[term.c.y][term.c.x].state & GLYPH_SET)
1261 g.c = term.line[term.c.y][term.c.x].c;
1263 /* remove the old cursor */
1264 if(term.line[oldy][oldx].state & GLYPH_SET)
1265 xdraws(&term.line[oldy][oldx].c, term.line[oldy][oldx], oldx, oldy, 1);
1267 xclear(oldx, oldy, oldx, oldy);
1269 /* draw the new one */
1270 if(!(term.c.state & CURSOR_HIDE) && xw.hasfocus) {
1271 xdraws(&g.c, g, term.c.x, term.c.y, 1);
1272 oldx = term.c.x, oldy = term.c.y;
1277 /* basic drawing routines */
1279 xdrawc(int x, int y, Glyph g) {
1280 XRectangle r = { x * xw.cw, y * xw.ch, xw.cw, xw.ch };
1281 XSetBackground(xw.dis, dc.gc, dc.col[g.bg]);
1282 XSetForeground(xw.dis, dc.gc, dc.col[g.fg]);
1283 XSetFont(xw.dis, dc.gc, g.mode & ATTR_BOLD ? dc.bfont->fid : dc.font->fid);
1284 XDrawImageString(xw.dis, xw.buf, dc.gc, r.x, r.y+dc.font->ascent, &g.c, 1);
1291 xclear(0, 0, term.col-1, term.row-1);
1292 for(y = 0; y < term.row; y++)
1293 for(x = 0; x < term.col; x++)
1294 if(term.line[y][x].state & GLYPH_SET)
1295 xdrawc(x, y, term.line[y][x]);
1298 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1303 /* optimized drawing routine */
1305 draw(int redraw_all) {
1308 char buf[DRAW_BUF_SIZ];
1310 XSetForeground(xw.dis, dc.gc, dc.col[DefaultBG]);
1311 XFillRectangle(xw.dis, xw.buf, dc.gc, 0, 0, xw.bufw, xw.bufh);
1312 for(y = 0; y < term.row; y++) {
1313 base = term.line[y][0];
1315 for(x = 0; x < term.col; x++) {
1316 new = term.line[y][x];
1317 if(sel.bx!=-1 && new.c && selected(x, y))
1318 new.mode ^= ATTR_REVERSE;
1319 if(i > 0 && (!(new.state & GLYPH_SET) || ATTRCMP(base, new) ||
1320 i >= DRAW_BUF_SIZ)) {
1321 xdraws(buf, base, ox, y, i);
1324 if(new.state & GLYPH_SET) {
1333 xdraws(buf, base, ox, y, i);
1336 XCopyArea(xw.dis, xw.buf, xw.win, dc.gc, 0, 0, xw.bufw, xw.bufh, BORDER, BORDER);
1343 expose(XEvent *ev) {
1344 draw(SCREEN_REDRAW);
1348 xseturgency(int add) {
1349 XWMHints *h = XGetWMHints(xw.dis, xw.win);
1350 h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);
1351 XSetWMHints(xw.dis, xw.win, h);
1357 if((xw.hasfocus = ev->type == FocusIn))
1359 draw(SCREEN_UPDATE);
1365 for(i = 0; i < LEN(key); i++)
1367 return (char*)key[i].s;
1372 kpress(XEvent *ev) {
1373 XKeyEvent *e = &ev->xkey;
1381 meta = e->state & Mod1Mask;
1382 shift = e->state & ShiftMask;
1383 len = XLookupString(e, buf, sizeof(buf), &ksym, NULL);
1385 if((customkey = kmap(ksym)))
1386 ttywrite(customkey, strlen(customkey));
1388 buf[sizeof(buf)-1] = '\0';
1389 if(meta && len == 1)
1390 ttywrite("\033", 1);
1398 sprintf(buf, "\033%c%c", IS_SET(MODE_APPKEYPAD) ? 'O' : '[', "DACB"[ksym - XK_Left]);
1403 selpaste(), draw(1);
1406 fprintf(stderr, "errkey: %d\n", (int)ksym);
1415 if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
1418 xw.w = e->xconfigure.width;
1419 xw.h = e->xconfigure.height;
1420 xw.bufw = xw.w - 2*BORDER;
1421 xw.bufh = xw.h - 2*BORDER;
1422 col = xw.bufw / xw.cw;
1423 row = xw.bufh / xw.ch;
1425 ttyresize(col, row);
1426 xw.bufh = MAX(1, xw.bufh);
1427 xw.bufw = MAX(1, xw.bufw);
1428 XFreePixmap(xw.dis, xw.buf);
1429 xw.buf = XCreatePixmap(xw.dis, xw.win, xw.bufw, xw.bufh, XDefaultDepth(xw.dis, xw.scr));
1430 draw(SCREEN_REDRAW);
1437 int xfd = XConnectionNumber(xw.dis);
1441 FD_SET(cmdfd, &rfd);
1443 if(select(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, NULL) < 0) {
1446 die("select failed: %s\n", SERRNO);
1448 if(FD_ISSET(cmdfd, &rfd)) {
1450 draw(SCREEN_UPDATE);
1452 while(XPending(xw.dis)) {
1453 XNextEvent(xw.dis, &ev);
1454 if(handler[ev.type])
1455 (handler[ev.type])(&ev);
1461 main(int argc, char *argv[]) {
1464 for(i = 1; i < argc; i++) {
1465 switch(argv[i][0] != '-' || argv[i][2] ? -1 : argv[i][1]) {
1467 if(++i < argc) opt_title = argv[i];
1470 if(++i < argc) opt_cmd = argv[i];
1477 setlocale(LC_CTYPE, "");