x.c (49072B)
1 /* See LICENSE for license details. */ 2 #include <errno.h> 3 #include <math.h> 4 #include <limits.h> 5 #include <locale.h> 6 #include <signal.h> 7 #include <sys/select.h> 8 #include <time.h> 9 #include <unistd.h> 10 #include <libgen.h> 11 #include <X11/Xatom.h> 12 #include <X11/Xlib.h> 13 #include <X11/cursorfont.h> 14 #include <X11/keysym.h> 15 #include <X11/Xft/Xft.h> 16 #include <X11/XKBlib.h> 17 18 char *argv0; 19 #include "arg.h" 20 #include "st.h" 21 #include "win.h" 22 23 /* types used in config.h */ 24 typedef struct { 25 uint mod; 26 KeySym keysym; 27 void (*func)(const Arg *); 28 const Arg arg; 29 } Shortcut; 30 31 typedef struct { 32 uint mod; 33 uint button; 34 void (*func)(const Arg *); 35 const Arg arg; 36 uint release; 37 } MouseShortcut; 38 39 typedef struct { 40 KeySym k; 41 uint mask; 42 char *s; 43 /* three-valued logic variables: 0 indifferent, 1 on, -1 off */ 44 signed char appkey; /* application keypad */ 45 signed char appcursor; /* application cursor */ 46 } Key; 47 48 /* X modifiers */ 49 #define XK_ANY_MOD UINT_MAX 50 #define XK_NO_MOD 0 51 #define XK_SWITCH_MOD (1<<13|1<<14) 52 53 /* function definitions used in config.h */ 54 static void clipcopy(const Arg *); 55 static void clippaste(const Arg *); 56 static void numlock(const Arg *); 57 static void selpaste(const Arg *); 58 static void zoom(const Arg *); 59 static void zoomabs(const Arg *); 60 static void zoomreset(const Arg *); 61 static void ttysend(const Arg *); 62 void kscrollup(const Arg *); 63 void kscrolldown(const Arg *); 64 65 /* config.h for applying patches and the configuration. */ 66 #include "config.h" 67 68 /* XEMBED messages */ 69 #define XEMBED_FOCUS_IN 4 70 #define XEMBED_FOCUS_OUT 5 71 72 /* macros */ 73 #define IS_SET(flag) ((win.mode & (flag)) != 0) 74 #define TRUERED(x) (((x) & 0xff0000) >> 8) 75 #define TRUEGREEN(x) (((x) & 0xff00)) 76 #define TRUEBLUE(x) (((x) & 0xff) << 8) 77 78 typedef XftDraw *Draw; 79 typedef XftColor Color; 80 typedef XftGlyphFontSpec GlyphFontSpec; 81 82 /* Purely graphic info */ 83 typedef struct { 84 int tw, th; /* tty width and height */ 85 int w, h; /* window width and height */ 86 int ch; /* char height */ 87 int cw; /* char width */ 88 int mode; /* window state/mode flags */ 89 int cursor; /* cursor style */ 90 } TermWindow; 91 92 typedef struct { 93 Display *dpy; 94 Colormap cmap; 95 Window win; 96 Drawable buf; 97 GlyphFontSpec *specbuf; /* font spec buffer used for rendering */ 98 Atom xembed, wmdeletewin, netwmname, netwmiconname, netwmpid; 99 struct { 100 XIM xim; 101 XIC xic; 102 XPoint spot; 103 XVaNestedList spotlist; 104 } ime; 105 Draw draw; 106 Visual *vis; 107 XSetWindowAttributes attrs; 108 int scr; 109 int isfixed; /* is fixed geometry? */ 110 int depth; /* bit depth */ 111 int l, t; /* left and top offset */ 112 int gm; /* geometry mask */ 113 } XWindow; 114 115 typedef struct { 116 Atom xtarget; 117 char *primary, *clipboard; 118 struct timespec tclick1; 119 struct timespec tclick2; 120 } XSelection; 121 122 /* Font structure */ 123 #define Font Font_ 124 typedef struct { 125 int height; 126 int width; 127 int ascent; 128 int descent; 129 int badslant; 130 int badweight; 131 short lbearing; 132 short rbearing; 133 XftFont *match; 134 FcFontSet *set; 135 FcPattern *pattern; 136 } Font; 137 138 /* Drawing Context */ 139 typedef struct { 140 Color *col; 141 size_t collen; 142 Font font, bfont, ifont, ibfont; 143 GC gc; 144 } DC; 145 146 static inline ushort sixd_to_16bit(int); 147 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int); 148 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int); 149 static void xdrawglyph(Glyph, int, int); 150 static void xclear(int, int, int, int); 151 static int xgeommasktogravity(int); 152 static int ximopen(Display *); 153 static void ximinstantiate(Display *, XPointer, XPointer); 154 static void ximdestroy(XIM, XPointer, XPointer); 155 static int xicdestroy(XIC, XPointer, XPointer); 156 static void xinit(int, int); 157 static void cresize(int, int); 158 static void xresize(int, int); 159 static void xhints(void); 160 static int xloadcolor(int, const char *, Color *); 161 static int xloadfont(Font *, FcPattern *); 162 static void xloadfonts(const char *, double); 163 static void xunloadfont(Font *); 164 static void xunloadfonts(void); 165 static void xsetenv(void); 166 static void xseturgency(int); 167 static int evcol(XEvent *); 168 static int evrow(XEvent *); 169 170 static void expose(XEvent *); 171 static void visibility(XEvent *); 172 static void unmap(XEvent *); 173 static void kpress(XEvent *); 174 static void cmessage(XEvent *); 175 static void resize(XEvent *); 176 static void focus(XEvent *); 177 static uint buttonmask(uint); 178 static int mouseaction(XEvent *, uint); 179 static void brelease(XEvent *); 180 static void bpress(XEvent *); 181 static void bmotion(XEvent *); 182 static void propnotify(XEvent *); 183 static void selnotify(XEvent *); 184 static void selclear_(XEvent *); 185 static void selrequest(XEvent *); 186 static void setsel(char *, Time); 187 static void mousesel(XEvent *, int); 188 static void mousereport(XEvent *); 189 static char *kmap(KeySym, uint); 190 static int match(uint, uint); 191 192 static void run(void); 193 static void usage(void); 194 195 static void (*handler[LASTEvent])(XEvent *) = { 196 [KeyPress] = kpress, 197 [ClientMessage] = cmessage, 198 [ConfigureNotify] = resize, 199 [VisibilityNotify] = visibility, 200 [UnmapNotify] = unmap, 201 [Expose] = expose, 202 [FocusIn] = focus, 203 [FocusOut] = focus, 204 [MotionNotify] = bmotion, 205 [ButtonPress] = bpress, 206 [ButtonRelease] = brelease, 207 /* 208 * Uncomment if you want the selection to disappear when you select something 209 * different in another window. 210 */ 211 /* [SelectionClear] = selclear_, */ 212 [SelectionNotify] = selnotify, 213 /* 214 * PropertyNotify is only turned on when there is some INCR transfer happening 215 * for the selection retrieval. 216 */ 217 [PropertyNotify] = propnotify, 218 [SelectionRequest] = selrequest, 219 }; 220 221 /* Globals */ 222 static DC dc; 223 static XWindow xw; 224 static XSelection xsel; 225 static TermWindow win; 226 227 /* Font Ring Cache */ 228 enum { 229 FRC_NORMAL, 230 FRC_ITALIC, 231 FRC_BOLD, 232 FRC_ITALICBOLD 233 }; 234 235 typedef struct { 236 XftFont *font; 237 int flags; 238 Rune unicodep; 239 } Fontcache; 240 241 /* Fontcache is an array now. A new font will be appended to the array. */ 242 static Fontcache *frc = NULL; 243 static int frclen = 0; 244 static int frccap = 0; 245 static char *usedfont = NULL; 246 static double usedfontsize = 0; 247 static double defaultfontsize = 0; 248 249 static char *opt_class = NULL; 250 static char **opt_cmd = NULL; 251 static char *opt_embed = NULL; 252 static char *opt_font = NULL; 253 static char *opt_io = NULL; 254 static char *opt_line = NULL; 255 static char *opt_name = NULL; 256 static char *opt_title = NULL; 257 258 static uint buttons; /* bit field of pressed buttons */ 259 260 void 261 clipcopy(const Arg *dummy) 262 { 263 Atom clipboard; 264 265 free(xsel.clipboard); 266 xsel.clipboard = NULL; 267 268 if (xsel.primary != NULL) { 269 xsel.clipboard = xstrdup(xsel.primary); 270 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0); 271 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime); 272 } 273 } 274 275 void 276 clippaste(const Arg *dummy) 277 { 278 Atom clipboard; 279 280 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0); 281 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard, 282 xw.win, CurrentTime); 283 } 284 285 void 286 selpaste(const Arg *dummy) 287 { 288 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY, 289 xw.win, CurrentTime); 290 } 291 292 void 293 numlock(const Arg *dummy) 294 { 295 win.mode ^= MODE_NUMLOCK; 296 } 297 298 void 299 zoom(const Arg *arg) 300 { 301 Arg larg; 302 303 larg.f = usedfontsize + arg->f; 304 zoomabs(&larg); 305 } 306 307 void 308 zoomabs(const Arg *arg) 309 { 310 xunloadfonts(); 311 xloadfonts(usedfont, arg->f); 312 cresize(0, 0); 313 redraw(); 314 xhints(); 315 } 316 317 void 318 zoomreset(const Arg *arg) 319 { 320 Arg larg; 321 322 if (defaultfontsize > 0) { 323 larg.f = defaultfontsize; 324 zoomabs(&larg); 325 } 326 } 327 328 void 329 ttysend(const Arg *arg) 330 { 331 ttywrite(arg->s, strlen(arg->s), 1); 332 } 333 334 int 335 evcol(XEvent *e) 336 { 337 int x = e->xbutton.x - borderpx; 338 LIMIT(x, 0, win.tw - 1); 339 return x / win.cw; 340 } 341 342 int 343 evrow(XEvent *e) 344 { 345 int y = e->xbutton.y - borderpx; 346 LIMIT(y, 0, win.th - 1); 347 return y / win.ch; 348 } 349 350 void 351 mousesel(XEvent *e, int done) 352 { 353 int type, seltype = SEL_REGULAR; 354 uint state = e->xbutton.state & ~(Button1Mask | forcemousemod); 355 356 for (type = 1; type < LEN(selmasks); ++type) { 357 if (match(selmasks[type], state)) { 358 seltype = type; 359 break; 360 } 361 } 362 selextend(evcol(e), evrow(e), seltype, done); 363 if (done) 364 setsel(getsel(), e->xbutton.time); 365 } 366 367 void 368 mousereport(XEvent *e) 369 { 370 int len, btn, code; 371 int x = evcol(e), y = evrow(e); 372 int state = e->xbutton.state; 373 char buf[40]; 374 static int ox, oy; 375 376 if (e->type == MotionNotify) { 377 if (x == ox && y == oy) 378 return; 379 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY)) 380 return; 381 /* MODE_MOUSEMOTION: no reporting if no button is pressed */ 382 if (IS_SET(MODE_MOUSEMOTION) && buttons == 0) 383 return; 384 /* Set btn to lowest-numbered pressed button, or 12 if no 385 * buttons are pressed. */ 386 for (btn = 1; btn <= 11 && !(buttons & (1<<(btn-1))); btn++) 387 ; 388 code = 32; 389 } else { 390 btn = e->xbutton.button; 391 /* Only buttons 1 through 11 can be encoded */ 392 if (btn < 1 || btn > 11) 393 return; 394 if (e->type == ButtonRelease) { 395 /* MODE_MOUSEX10: no button release reporting */ 396 if (IS_SET(MODE_MOUSEX10)) 397 return; 398 /* Don't send release events for the scroll wheel */ 399 if (btn == 4 || btn == 5) 400 return; 401 } 402 code = 0; 403 } 404 405 ox = x; 406 oy = y; 407 408 /* Encode btn into code. If no button is pressed for a motion event in 409 * MODE_MOUSEMANY, then encode it as a release. */ 410 if ((!IS_SET(MODE_MOUSESGR) && e->type == ButtonRelease) || btn == 12) 411 code += 3; 412 else if (btn >= 8) 413 code += 128 + btn - 8; 414 else if (btn >= 4) 415 code += 64 + btn - 4; 416 else 417 code += btn - 1; 418 419 if (!IS_SET(MODE_MOUSEX10)) { 420 code += ((state & ShiftMask ) ? 4 : 0) 421 + ((state & Mod1Mask ) ? 8 : 0) /* meta key: alt */ 422 + ((state & ControlMask) ? 16 : 0); 423 } 424 425 if (IS_SET(MODE_MOUSESGR)) { 426 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c", 427 code, x+1, y+1, 428 e->type == ButtonRelease ? 'm' : 'M'); 429 } else if (x < 223 && y < 223) { 430 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c", 431 32+code, 32+x+1, 32+y+1); 432 } else { 433 return; 434 } 435 436 ttywrite(buf, len, 0); 437 } 438 439 uint 440 buttonmask(uint button) 441 { 442 return button == Button1 ? Button1Mask 443 : button == Button2 ? Button2Mask 444 : button == Button3 ? Button3Mask 445 : button == Button4 ? Button4Mask 446 : button == Button5 ? Button5Mask 447 : 0; 448 } 449 450 int 451 mouseaction(XEvent *e, uint release) 452 { 453 MouseShortcut *ms; 454 455 /* ignore Button<N>mask for Button<N> - it's set on release */ 456 uint state = e->xbutton.state & ~buttonmask(e->xbutton.button); 457 458 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) { 459 if (ms->release == release && 460 ms->button == e->xbutton.button && 461 (match(ms->mod, state) || /* exact or forced */ 462 match(ms->mod, state & ~forcemousemod))) { 463 ms->func(&(ms->arg)); 464 return 1; 465 } 466 } 467 468 return 0; 469 } 470 471 void 472 bpress(XEvent *e) 473 { 474 int btn = e->xbutton.button; 475 struct timespec now; 476 int snap; 477 478 if (1 <= btn && btn <= 11) 479 buttons |= 1 << (btn-1); 480 481 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) { 482 mousereport(e); 483 return; 484 } 485 486 if (mouseaction(e, 0)) 487 return; 488 489 if (btn == Button1) { 490 /* 491 * If the user clicks below predefined timeouts specific 492 * snapping behaviour is exposed. 493 */ 494 clock_gettime(CLOCK_MONOTONIC, &now); 495 if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) { 496 snap = SNAP_LINE; 497 } else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) { 498 snap = SNAP_WORD; 499 } else { 500 snap = 0; 501 } 502 xsel.tclick2 = xsel.tclick1; 503 xsel.tclick1 = now; 504 505 selstart(evcol(e), evrow(e), snap); 506 } 507 } 508 509 void 510 propnotify(XEvent *e) 511 { 512 XPropertyEvent *xpev; 513 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0); 514 515 xpev = &e->xproperty; 516 if (xpev->state == PropertyNewValue && 517 (xpev->atom == XA_PRIMARY || 518 xpev->atom == clipboard)) { 519 selnotify(e); 520 } 521 } 522 523 void 524 selnotify(XEvent *e) 525 { 526 ulong nitems, ofs, rem; 527 int format; 528 uchar *data, *last, *repl; 529 Atom type, incratom, property = None; 530 531 incratom = XInternAtom(xw.dpy, "INCR", 0); 532 533 ofs = 0; 534 if (e->type == SelectionNotify) 535 property = e->xselection.property; 536 else if (e->type == PropertyNotify) 537 property = e->xproperty.atom; 538 539 if (property == None) 540 return; 541 542 do { 543 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs, 544 BUFSIZ/4, False, AnyPropertyType, 545 &type, &format, &nitems, &rem, 546 &data)) { 547 fprintf(stderr, "Clipboard allocation failed\n"); 548 return; 549 } 550 551 if (e->type == PropertyNotify && nitems == 0 && rem == 0) { 552 /* 553 * If there is some PropertyNotify with no data, then 554 * this is the signal of the selection owner that all 555 * data has been transferred. We won't need to receive 556 * PropertyNotify events anymore. 557 */ 558 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask); 559 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, 560 &xw.attrs); 561 } 562 563 if (type == incratom) { 564 /* 565 * Activate the PropertyNotify events so we receive 566 * when the selection owner does send us the next 567 * chunk of data. 568 */ 569 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask); 570 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, 571 &xw.attrs); 572 573 /* 574 * Deleting the property is the transfer start signal. 575 */ 576 XDeleteProperty(xw.dpy, xw.win, (int)property); 577 continue; 578 } 579 580 /* 581 * As seen in getsel: 582 * Line endings are inconsistent in the terminal and GUI world 583 * copy and pasting. When receiving some selection data, 584 * replace all '\n' with '\r'. 585 * FIXME: Fix the computer world. 586 */ 587 repl = data; 588 last = data + nitems * format / 8; 589 while ((repl = memchr(repl, '\n', last - repl))) { 590 *repl++ = '\r'; 591 } 592 593 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0) 594 ttywrite("\033[200~", 6, 0); 595 ttywrite((char *)data, nitems * format / 8, 1); 596 if (IS_SET(MODE_BRCKTPASTE) && rem == 0) 597 ttywrite("\033[201~", 6, 0); 598 XFree(data); 599 /* number of 32-bit chunks returned */ 600 ofs += nitems * format / 32; 601 } while (rem > 0); 602 603 /* 604 * Deleting the property again tells the selection owner to send the 605 * next data chunk in the property. 606 */ 607 XDeleteProperty(xw.dpy, xw.win, (int)property); 608 } 609 610 void 611 xclipcopy(void) 612 { 613 clipcopy(NULL); 614 } 615 616 void 617 selclear_(XEvent *e) 618 { 619 selclear(); 620 } 621 622 void 623 selrequest(XEvent *e) 624 { 625 XSelectionRequestEvent *xsre; 626 XSelectionEvent xev; 627 Atom xa_targets, string, clipboard; 628 char *seltext; 629 630 xsre = (XSelectionRequestEvent *) e; 631 xev.type = SelectionNotify; 632 xev.requestor = xsre->requestor; 633 xev.selection = xsre->selection; 634 xev.target = xsre->target; 635 xev.time = xsre->time; 636 if (xsre->property == None) 637 xsre->property = xsre->target; 638 639 /* reject */ 640 xev.property = None; 641 642 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0); 643 if (xsre->target == xa_targets) { 644 /* respond with the supported type */ 645 string = xsel.xtarget; 646 XChangeProperty(xsre->display, xsre->requestor, xsre->property, 647 XA_ATOM, 32, PropModeReplace, 648 (uchar *) &string, 1); 649 xev.property = xsre->property; 650 } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) { 651 /* 652 * xith XA_STRING non ascii characters may be incorrect in the 653 * requestor. It is not our problem, use utf8. 654 */ 655 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0); 656 if (xsre->selection == XA_PRIMARY) { 657 seltext = xsel.primary; 658 } else if (xsre->selection == clipboard) { 659 seltext = xsel.clipboard; 660 } else { 661 fprintf(stderr, 662 "Unhandled clipboard selection 0x%lx\n", 663 xsre->selection); 664 return; 665 } 666 if (seltext != NULL) { 667 XChangeProperty(xsre->display, xsre->requestor, 668 xsre->property, xsre->target, 669 8, PropModeReplace, 670 (uchar *)seltext, strlen(seltext)); 671 xev.property = xsre->property; 672 } 673 } 674 675 /* all done, send a notification to the listener */ 676 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev)) 677 fprintf(stderr, "Error sending SelectionNotify event\n"); 678 } 679 680 void 681 setsel(char *str, Time t) 682 { 683 if (!str) 684 return; 685 686 free(xsel.primary); 687 xsel.primary = str; 688 689 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t); 690 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win) 691 selclear(); 692 } 693 694 void 695 xsetsel(char *str) 696 { 697 setsel(str, CurrentTime); 698 } 699 700 void 701 brelease(XEvent *e) 702 { 703 int btn = e->xbutton.button; 704 705 if (1 <= btn && btn <= 11) 706 buttons &= ~(1 << (btn-1)); 707 708 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) { 709 mousereport(e); 710 return; 711 } 712 713 if (mouseaction(e, 1)) 714 return; 715 if (btn == Button1) 716 mousesel(e, 1); 717 } 718 719 void 720 bmotion(XEvent *e) 721 { 722 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) { 723 mousereport(e); 724 return; 725 } 726 727 mousesel(e, 0); 728 } 729 730 void 731 cresize(int width, int height) 732 { 733 int col, row; 734 735 if (width != 0) 736 win.w = width; 737 if (height != 0) 738 win.h = height; 739 740 col = (win.w - 2 * borderpx) / win.cw; 741 row = (win.h - 2 * borderpx) / win.ch; 742 col = MAX(1, col); 743 row = MAX(1, row); 744 745 tresize(col, row); 746 xresize(col, row); 747 ttyresize(win.tw, win.th); 748 } 749 750 void 751 xresize(int col, int row) 752 { 753 win.tw = col * win.cw; 754 win.th = row * win.ch; 755 756 XFreePixmap(xw.dpy, xw.buf); 757 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h, 758 xw.depth); 759 XftDrawChange(xw.draw, xw.buf); 760 xclear(0, 0, win.w, win.h); 761 762 /* resize to new width */ 763 xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec)); 764 } 765 766 ushort 767 sixd_to_16bit(int x) 768 { 769 return x == 0 ? 0 : 0x3737 + 0x2828 * x; 770 } 771 772 int 773 xloadcolor(int i, const char *name, Color *ncolor) 774 { 775 XRenderColor color = { .alpha = 0xffff }; 776 777 if (!name) { 778 if (BETWEEN(i, 16, 255)) { /* 256 color */ 779 if (i < 6*6*6+16) { /* same colors as xterm */ 780 color.red = sixd_to_16bit( ((i-16)/36)%6 ); 781 color.green = sixd_to_16bit( ((i-16)/6) %6 ); 782 color.blue = sixd_to_16bit( ((i-16)/1) %6 ); 783 } else { /* greyscale */ 784 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16)); 785 color.green = color.blue = color.red; 786 } 787 return XftColorAllocValue(xw.dpy, xw.vis, 788 xw.cmap, &color, ncolor); 789 } else 790 name = colorname[i]; 791 } 792 793 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor); 794 } 795 796 void 797 xloadcols(void) 798 { 799 int i; 800 static int loaded; 801 Color *cp; 802 803 if (loaded) { 804 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp) 805 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp); 806 } else { 807 dc.collen = MAX(LEN(colorname), 256); 808 dc.col = xmalloc(dc.collen * sizeof(Color)); 809 } 810 811 for (i = 0; i < dc.collen; i++) 812 if (!xloadcolor(i, NULL, &dc.col[i])) { 813 if (colorname[i]) 814 die("could not allocate color '%s'\n", colorname[i]); 815 else 816 die("could not allocate color %d\n", i); 817 } 818 819 dc.col[defaultbg].color.alpha = (unsigned short)(0xffff * alpha); 820 dc.col[defaultbg].pixel &= 0x00FFFFFF; 821 dc.col[defaultbg].pixel |= (unsigned char)(0xff * alpha) << 24; 822 loaded = 1; 823 } 824 825 int 826 xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b) 827 { 828 if (!BETWEEN(x, 0, dc.collen - 1)) 829 return 1; 830 831 *r = dc.col[x].color.red >> 8; 832 *g = dc.col[x].color.green >> 8; 833 *b = dc.col[x].color.blue >> 8; 834 835 return 0; 836 } 837 838 int 839 xsetcolorname(int x, const char *name) 840 { 841 Color ncolor; 842 843 if (!BETWEEN(x, 0, dc.collen - 1)) 844 return 1; 845 846 if (!xloadcolor(x, name, &ncolor)) 847 return 1; 848 849 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]); 850 dc.col[x] = ncolor; 851 852 if (x == defaultbg) { 853 dc.col[defaultbg].color.alpha = (unsigned short)(0xffff * alpha); 854 dc.col[defaultbg].pixel &= 0x00FFFFFF; 855 dc.col[defaultbg].pixel |= (unsigned char)(0xff * alpha) << 24; 856 } 857 858 return 0; 859 } 860 861 /* 862 * Absolute coordinates. 863 */ 864 void 865 xclear(int x1, int y1, int x2, int y2) 866 { 867 XftDrawRect(xw.draw, 868 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg], 869 x1, y1, x2-x1, y2-y1); 870 } 871 872 void 873 xhints(void) 874 { 875 XClassHint class = {opt_name ? opt_name : termname, 876 opt_class ? opt_class : termname}; 877 XWMHints wm = {.flags = InputHint, .input = 1}; 878 XSizeHints *sizeh; 879 880 sizeh = XAllocSizeHints(); 881 882 sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize; 883 sizeh->height = win.h; 884 sizeh->width = win.w; 885 sizeh->height_inc = win.ch; 886 sizeh->width_inc = win.cw; 887 sizeh->base_height = 2 * borderpx; 888 sizeh->base_width = 2 * borderpx; 889 sizeh->min_height = win.ch + 2 * borderpx; 890 sizeh->min_width = win.cw + 2 * borderpx; 891 if (xw.isfixed) { 892 sizeh->flags |= PMaxSize; 893 sizeh->min_width = sizeh->max_width = win.w; 894 sizeh->min_height = sizeh->max_height = win.h; 895 } 896 if (xw.gm & (XValue|YValue)) { 897 sizeh->flags |= USPosition | PWinGravity; 898 sizeh->x = xw.l; 899 sizeh->y = xw.t; 900 sizeh->win_gravity = xgeommasktogravity(xw.gm); 901 } 902 903 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm, 904 &class); 905 XFree(sizeh); 906 } 907 908 int 909 xgeommasktogravity(int mask) 910 { 911 switch (mask & (XNegative|YNegative)) { 912 case 0: 913 return NorthWestGravity; 914 case XNegative: 915 return NorthEastGravity; 916 case YNegative: 917 return SouthWestGravity; 918 } 919 920 return SouthEastGravity; 921 } 922 923 int 924 xloadfont(Font *f, FcPattern *pattern) 925 { 926 FcPattern *configured; 927 FcPattern *match; 928 FcResult result; 929 XGlyphInfo extents; 930 int wantattr, haveattr; 931 932 /* 933 * Manually configure instead of calling XftMatchFont 934 * so that we can use the configured pattern for 935 * "missing glyph" lookups. 936 */ 937 configured = FcPatternDuplicate(pattern); 938 if (!configured) 939 return 1; 940 941 FcConfigSubstitute(NULL, configured, FcMatchPattern); 942 XftDefaultSubstitute(xw.dpy, xw.scr, configured); 943 944 match = FcFontMatch(NULL, configured, &result); 945 if (!match) { 946 FcPatternDestroy(configured); 947 return 1; 948 } 949 950 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) { 951 FcPatternDestroy(configured); 952 FcPatternDestroy(match); 953 return 1; 954 } 955 956 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) == 957 XftResultMatch)) { 958 /* 959 * Check if xft was unable to find a font with the appropriate 960 * slant but gave us one anyway. Try to mitigate. 961 */ 962 if ((XftPatternGetInteger(f->match->pattern, "slant", 0, 963 &haveattr) != XftResultMatch) || haveattr < wantattr) { 964 f->badslant = 1; 965 fputs("font slant does not match\n", stderr); 966 } 967 } 968 969 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) == 970 XftResultMatch)) { 971 if ((XftPatternGetInteger(f->match->pattern, "weight", 0, 972 &haveattr) != XftResultMatch) || haveattr != wantattr) { 973 f->badweight = 1; 974 fputs("font weight does not match\n", stderr); 975 } 976 } 977 978 XftTextExtentsUtf8(xw.dpy, f->match, 979 (const FcChar8 *) ascii_printable, 980 strlen(ascii_printable), &extents); 981 982 f->set = NULL; 983 f->pattern = configured; 984 985 f->ascent = f->match->ascent; 986 f->descent = f->match->descent; 987 f->lbearing = 0; 988 f->rbearing = f->match->max_advance_width; 989 990 f->height = f->ascent + f->descent; 991 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable)); 992 993 return 0; 994 } 995 996 void 997 xloadfonts(const char *fontstr, double fontsize) 998 { 999 FcPattern *pattern; 1000 double fontval; 1001 1002 if (fontstr[0] == '-') 1003 pattern = XftXlfdParse(fontstr, False, False); 1004 else 1005 pattern = FcNameParse((const FcChar8 *)fontstr); 1006 1007 if (!pattern) 1008 die("can't open font %s\n", fontstr); 1009 1010 if (fontsize > 1) { 1011 FcPatternDel(pattern, FC_PIXEL_SIZE); 1012 FcPatternDel(pattern, FC_SIZE); 1013 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize); 1014 usedfontsize = fontsize; 1015 } else { 1016 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) == 1017 FcResultMatch) { 1018 usedfontsize = fontval; 1019 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) == 1020 FcResultMatch) { 1021 usedfontsize = -1; 1022 } else { 1023 /* 1024 * Default font size is 12, if none given. This is to 1025 * have a known usedfontsize value. 1026 */ 1027 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12); 1028 usedfontsize = 12; 1029 } 1030 defaultfontsize = usedfontsize; 1031 } 1032 1033 if (xloadfont(&dc.font, pattern)) 1034 die("can't open font %s\n", fontstr); 1035 1036 if (usedfontsize < 0) { 1037 FcPatternGetDouble(dc.font.match->pattern, 1038 FC_PIXEL_SIZE, 0, &fontval); 1039 usedfontsize = fontval; 1040 if (fontsize == 0) 1041 defaultfontsize = fontval; 1042 } 1043 1044 /* Setting character width and height. */ 1045 win.cw = ceilf(dc.font.width * cwscale); 1046 win.ch = ceilf(dc.font.height * chscale); 1047 1048 FcPatternDel(pattern, FC_SLANT); 1049 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC); 1050 if (xloadfont(&dc.ifont, pattern)) 1051 die("can't open font %s\n", fontstr); 1052 1053 FcPatternDel(pattern, FC_WEIGHT); 1054 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD); 1055 if (xloadfont(&dc.ibfont, pattern)) 1056 die("can't open font %s\n", fontstr); 1057 1058 FcPatternDel(pattern, FC_SLANT); 1059 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN); 1060 if (xloadfont(&dc.bfont, pattern)) 1061 die("can't open font %s\n", fontstr); 1062 1063 FcPatternDestroy(pattern); 1064 } 1065 1066 void 1067 xunloadfont(Font *f) 1068 { 1069 XftFontClose(xw.dpy, f->match); 1070 FcPatternDestroy(f->pattern); 1071 if (f->set) 1072 FcFontSetDestroy(f->set); 1073 } 1074 1075 void 1076 xunloadfonts(void) 1077 { 1078 /* Free the loaded fonts in the font cache. */ 1079 while (frclen > 0) 1080 XftFontClose(xw.dpy, frc[--frclen].font); 1081 1082 xunloadfont(&dc.font); 1083 xunloadfont(&dc.bfont); 1084 xunloadfont(&dc.ifont); 1085 xunloadfont(&dc.ibfont); 1086 } 1087 1088 int 1089 ximopen(Display *dpy) 1090 { 1091 XIMCallback imdestroy = { .client_data = NULL, .callback = ximdestroy }; 1092 XICCallback icdestroy = { .client_data = NULL, .callback = xicdestroy }; 1093 1094 xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL); 1095 if (xw.ime.xim == NULL) 1096 return 0; 1097 1098 if (XSetIMValues(xw.ime.xim, XNDestroyCallback, &imdestroy, NULL)) 1099 fprintf(stderr, "XSetIMValues: " 1100 "Could not set XNDestroyCallback.\n"); 1101 1102 xw.ime.spotlist = XVaCreateNestedList(0, XNSpotLocation, &xw.ime.spot, 1103 NULL); 1104 1105 if (xw.ime.xic == NULL) { 1106 xw.ime.xic = XCreateIC(xw.ime.xim, XNInputStyle, 1107 XIMPreeditNothing | XIMStatusNothing, 1108 XNClientWindow, xw.win, 1109 XNDestroyCallback, &icdestroy, 1110 NULL); 1111 } 1112 if (xw.ime.xic == NULL) 1113 fprintf(stderr, "XCreateIC: Could not create input context.\n"); 1114 1115 return 1; 1116 } 1117 1118 void 1119 ximinstantiate(Display *dpy, XPointer client, XPointer call) 1120 { 1121 if (ximopen(dpy)) 1122 XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL, 1123 ximinstantiate, NULL); 1124 } 1125 1126 void 1127 ximdestroy(XIM xim, XPointer client, XPointer call) 1128 { 1129 xw.ime.xim = NULL; 1130 XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL, 1131 ximinstantiate, NULL); 1132 XFree(xw.ime.spotlist); 1133 } 1134 1135 int 1136 xicdestroy(XIC xim, XPointer client, XPointer call) 1137 { 1138 xw.ime.xic = NULL; 1139 return 1; 1140 } 1141 1142 void 1143 xinit(int cols, int rows) 1144 { 1145 XGCValues gcvalues; 1146 Cursor cursor; 1147 Window parent, root; 1148 pid_t thispid = getpid(); 1149 XColor xmousefg, xmousebg; 1150 XWindowAttributes attr; 1151 XVisualInfo vis; 1152 1153 if (!(xw.dpy = XOpenDisplay(NULL))) 1154 die("can't open display\n"); 1155 xw.scr = XDefaultScreen(xw.dpy); 1156 1157 root = XRootWindow(xw.dpy, xw.scr); 1158 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0)))) 1159 parent = root; 1160 1161 if (XMatchVisualInfo(xw.dpy, xw.scr, 32, TrueColor, &vis) != 0) { 1162 xw.vis = vis.visual; 1163 xw.depth = vis.depth; 1164 } else { 1165 XGetWindowAttributes(xw.dpy, parent, &attr); 1166 xw.vis = attr.visual; 1167 xw.depth = attr.depth; 1168 } 1169 1170 /* font */ 1171 if (!FcInit()) 1172 die("could not init fontconfig.\n"); 1173 1174 usedfont = (opt_font == NULL)? font : opt_font; 1175 xloadfonts(usedfont, 0); 1176 1177 /* colors */ 1178 xw.cmap = XCreateColormap(xw.dpy, parent, xw.vis, None); 1179 xloadcols(); 1180 1181 /* adjust fixed window geometry */ 1182 win.w = 2 * borderpx + cols * win.cw; 1183 win.h = 2 * borderpx + rows * win.ch; 1184 if (xw.gm & XNegative) 1185 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2; 1186 if (xw.gm & YNegative) 1187 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2; 1188 1189 /* Events */ 1190 xw.attrs.background_pixel = dc.col[defaultbg].pixel; 1191 xw.attrs.border_pixel = dc.col[defaultbg].pixel; 1192 xw.attrs.bit_gravity = NorthWestGravity; 1193 xw.attrs.event_mask = FocusChangeMask | KeyPressMask | KeyReleaseMask 1194 | ExposureMask | VisibilityChangeMask | StructureNotifyMask 1195 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask; 1196 xw.attrs.colormap = xw.cmap; 1197 1198 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t, 1199 win.w, win.h, 0, xw.depth, InputOutput, 1200 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity 1201 | CWEventMask | CWColormap, &xw.attrs); 1202 if (parent != root) 1203 XReparentWindow(xw.dpy, xw.win, parent, xw.l, xw.t); 1204 1205 memset(&gcvalues, 0, sizeof(gcvalues)); 1206 gcvalues.graphics_exposures = False; 1207 dc.gc = XCreateGC(xw.dpy, xw.win, GCGraphicsExposures, 1208 &gcvalues); 1209 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h, 1210 xw.depth); 1211 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel); 1212 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h); 1213 1214 /* font spec buffer */ 1215 xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec)); 1216 1217 /* Xft rendering context */ 1218 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap); 1219 1220 /* input methods */ 1221 if (!ximopen(xw.dpy)) { 1222 XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL, 1223 ximinstantiate, NULL); 1224 } 1225 1226 /* white cursor, black outline */ 1227 cursor = XCreateFontCursor(xw.dpy, mouseshape); 1228 XDefineCursor(xw.dpy, xw.win, cursor); 1229 1230 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) { 1231 xmousefg.red = 0xffff; 1232 xmousefg.green = 0xffff; 1233 xmousefg.blue = 0xffff; 1234 } 1235 1236 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) { 1237 xmousebg.red = 0x0000; 1238 xmousebg.green = 0x0000; 1239 xmousebg.blue = 0x0000; 1240 } 1241 1242 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg); 1243 1244 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False); 1245 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False); 1246 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False); 1247 xw.netwmiconname = XInternAtom(xw.dpy, "_NET_WM_ICON_NAME", False); 1248 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1); 1249 1250 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False); 1251 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32, 1252 PropModeReplace, (uchar *)&thispid, 1); 1253 1254 win.mode = MODE_NUMLOCK; 1255 resettitle(); 1256 xhints(); 1257 XMapWindow(xw.dpy, xw.win); 1258 XSync(xw.dpy, False); 1259 1260 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1); 1261 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2); 1262 xsel.primary = NULL; 1263 xsel.clipboard = NULL; 1264 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0); 1265 if (xsel.xtarget == None) 1266 xsel.xtarget = XA_STRING; 1267 } 1268 1269 int 1270 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y) 1271 { 1272 float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp; 1273 ushort mode, prevmode = USHRT_MAX; 1274 Font *font = &dc.font; 1275 int frcflags = FRC_NORMAL; 1276 float runewidth = win.cw; 1277 Rune rune; 1278 FT_UInt glyphidx; 1279 FcResult fcres; 1280 FcPattern *fcpattern, *fontpattern; 1281 FcFontSet *fcsets[] = { NULL }; 1282 FcCharSet *fccharset; 1283 int i, f, numspecs = 0; 1284 1285 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) { 1286 /* Fetch rune and mode for current glyph. */ 1287 rune = glyphs[i].u; 1288 mode = glyphs[i].mode; 1289 1290 /* Skip dummy wide-character spacing. */ 1291 if (mode == ATTR_WDUMMY) 1292 continue; 1293 1294 /* Determine font for glyph if different from previous glyph. */ 1295 if (prevmode != mode) { 1296 prevmode = mode; 1297 font = &dc.font; 1298 frcflags = FRC_NORMAL; 1299 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f); 1300 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) { 1301 font = &dc.ibfont; 1302 frcflags = FRC_ITALICBOLD; 1303 } else if (mode & ATTR_ITALIC) { 1304 font = &dc.ifont; 1305 frcflags = FRC_ITALIC; 1306 } else if (mode & ATTR_BOLD) { 1307 font = &dc.bfont; 1308 frcflags = FRC_BOLD; 1309 } 1310 yp = winy + font->ascent; 1311 } 1312 1313 /* Lookup character index with default font. */ 1314 glyphidx = XftCharIndex(xw.dpy, font->match, rune); 1315 if (glyphidx) { 1316 specs[numspecs].font = font->match; 1317 specs[numspecs].glyph = glyphidx; 1318 specs[numspecs].x = (short)xp; 1319 specs[numspecs].y = (short)yp; 1320 xp += runewidth; 1321 numspecs++; 1322 continue; 1323 } 1324 1325 /* Fallback on font cache, search the font cache for match. */ 1326 for (f = 0; f < frclen; f++) { 1327 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune); 1328 /* Everything correct. */ 1329 if (glyphidx && frc[f].flags == frcflags) 1330 break; 1331 /* We got a default font for a not found glyph. */ 1332 if (!glyphidx && frc[f].flags == frcflags 1333 && frc[f].unicodep == rune) { 1334 break; 1335 } 1336 } 1337 1338 /* Nothing was found. Use fontconfig to find matching font. */ 1339 if (f >= frclen) { 1340 if (!font->set) 1341 font->set = FcFontSort(0, font->pattern, 1342 1, 0, &fcres); 1343 fcsets[0] = font->set; 1344 1345 /* 1346 * Nothing was found in the cache. Now use 1347 * some dozen of Fontconfig calls to get the 1348 * font for one single character. 1349 * 1350 * Xft and fontconfig are design failures. 1351 */ 1352 fcpattern = FcPatternDuplicate(font->pattern); 1353 fccharset = FcCharSetCreate(); 1354 1355 FcCharSetAddChar(fccharset, rune); 1356 FcPatternAddCharSet(fcpattern, FC_CHARSET, 1357 fccharset); 1358 FcPatternAddBool(fcpattern, FC_SCALABLE, 1); 1359 1360 FcConfigSubstitute(0, fcpattern, 1361 FcMatchPattern); 1362 FcDefaultSubstitute(fcpattern); 1363 1364 fontpattern = FcFontSetMatch(0, fcsets, 1, 1365 fcpattern, &fcres); 1366 1367 /* Allocate memory for the new cache entry. */ 1368 if (frclen >= frccap) { 1369 frccap += 16; 1370 frc = xrealloc(frc, frccap * sizeof(Fontcache)); 1371 } 1372 1373 frc[frclen].font = XftFontOpenPattern(xw.dpy, 1374 fontpattern); 1375 if (!frc[frclen].font) 1376 die("XftFontOpenPattern failed seeking fallback font: %s\n", 1377 strerror(errno)); 1378 frc[frclen].flags = frcflags; 1379 frc[frclen].unicodep = rune; 1380 1381 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune); 1382 1383 f = frclen; 1384 frclen++; 1385 1386 FcPatternDestroy(fcpattern); 1387 FcCharSetDestroy(fccharset); 1388 } 1389 1390 specs[numspecs].font = frc[f].font; 1391 specs[numspecs].glyph = glyphidx; 1392 specs[numspecs].x = (short)xp; 1393 specs[numspecs].y = (short)yp; 1394 xp += runewidth; 1395 numspecs++; 1396 } 1397 1398 return numspecs; 1399 } 1400 1401 void 1402 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y) 1403 { 1404 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1); 1405 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, 1406 width = charlen * win.cw; 1407 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg; 1408 XRenderColor colfg, colbg; 1409 XRectangle r; 1410 1411 /* Fallback on color display for attributes not supported by the font */ 1412 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) { 1413 if (dc.ibfont.badslant || dc.ibfont.badweight) 1414 base.fg = defaultattr; 1415 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) || 1416 (base.mode & ATTR_BOLD && dc.bfont.badweight)) { 1417 base.fg = defaultattr; 1418 } 1419 1420 if (IS_TRUECOL(base.fg)) { 1421 colfg.alpha = 0xffff; 1422 colfg.red = TRUERED(base.fg); 1423 colfg.green = TRUEGREEN(base.fg); 1424 colfg.blue = TRUEBLUE(base.fg); 1425 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg); 1426 fg = &truefg; 1427 } else { 1428 fg = &dc.col[base.fg]; 1429 } 1430 1431 if (IS_TRUECOL(base.bg)) { 1432 colbg.alpha = 0xffff; 1433 colbg.green = TRUEGREEN(base.bg); 1434 colbg.red = TRUERED(base.bg); 1435 colbg.blue = TRUEBLUE(base.bg); 1436 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg); 1437 bg = &truebg; 1438 } else { 1439 bg = &dc.col[base.bg]; 1440 } 1441 1442 /* Change basic system colors [0-7] to bright system colors [8-15] */ 1443 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7)) 1444 fg = &dc.col[base.fg + 8]; 1445 1446 if (IS_SET(MODE_REVERSE)) { 1447 if (fg == &dc.col[defaultfg]) { 1448 fg = &dc.col[defaultbg]; 1449 } else { 1450 colfg.red = ~fg->color.red; 1451 colfg.green = ~fg->color.green; 1452 colfg.blue = ~fg->color.blue; 1453 colfg.alpha = fg->color.alpha; 1454 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, 1455 &revfg); 1456 fg = &revfg; 1457 } 1458 1459 if (bg == &dc.col[defaultbg]) { 1460 bg = &dc.col[defaultfg]; 1461 } else { 1462 colbg.red = ~bg->color.red; 1463 colbg.green = ~bg->color.green; 1464 colbg.blue = ~bg->color.blue; 1465 colbg.alpha = bg->color.alpha; 1466 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, 1467 &revbg); 1468 bg = &revbg; 1469 } 1470 } 1471 1472 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) { 1473 colfg.red = fg->color.red / 2; 1474 colfg.green = fg->color.green / 2; 1475 colfg.blue = fg->color.blue / 2; 1476 colfg.alpha = fg->color.alpha; 1477 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg); 1478 fg = &revfg; 1479 } 1480 1481 if (base.mode & ATTR_REVERSE) { 1482 temp = fg; 1483 fg = bg; 1484 bg = temp; 1485 } 1486 1487 if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK) 1488 fg = bg; 1489 1490 if (base.mode & ATTR_INVISIBLE) 1491 fg = bg; 1492 1493 /* Intelligent cleaning up of the borders. */ 1494 if (x == 0) { 1495 xclear(0, (y == 0)? 0 : winy, borderpx, 1496 winy + win.ch + 1497 ((winy + win.ch >= borderpx + win.th)? win.h : 0)); 1498 } 1499 if (winx + width >= borderpx + win.tw) { 1500 xclear(winx + width, (y == 0)? 0 : winy, win.w, 1501 ((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch))); 1502 } 1503 if (y == 0) 1504 xclear(winx, 0, winx + width, borderpx); 1505 if (winy + win.ch >= borderpx + win.th) 1506 xclear(winx, winy + win.ch, winx + width, win.h); 1507 1508 /* Clean up the region we want to draw to. */ 1509 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch); 1510 1511 /* Set the clip region because Xft is sometimes dirty. */ 1512 r.x = 0; 1513 r.y = 0; 1514 r.height = win.ch; 1515 r.width = width; 1516 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1); 1517 1518 /* Render the glyphs. */ 1519 XftDrawGlyphFontSpec(xw.draw, fg, specs, len); 1520 1521 /* Render underline and strikethrough. */ 1522 if (base.mode & ATTR_UNDERLINE) { 1523 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent * chscale + 1, 1524 width, 1); 1525 } 1526 1527 if (base.mode & ATTR_STRUCK) { 1528 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent * chscale / 3, 1529 width, 1); 1530 } 1531 1532 /* Reset clip to none. */ 1533 XftDrawSetClip(xw.draw, 0); 1534 } 1535 1536 void 1537 xdrawglyph(Glyph g, int x, int y) 1538 { 1539 int numspecs; 1540 XftGlyphFontSpec spec; 1541 1542 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y); 1543 xdrawglyphfontspecs(&spec, g, numspecs, x, y); 1544 } 1545 1546 void 1547 xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og) 1548 { 1549 Color drawcol; 1550 1551 /* remove the old cursor */ 1552 if (selected(ox, oy)) 1553 og.mode ^= ATTR_REVERSE; 1554 xdrawglyph(og, ox, oy); 1555 1556 if (IS_SET(MODE_HIDE)) 1557 return; 1558 1559 /* 1560 * Select the right color for the right mode. 1561 */ 1562 g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE; 1563 1564 if (IS_SET(MODE_REVERSE)) { 1565 g.mode |= ATTR_REVERSE; 1566 g.bg = defaultfg; 1567 if (selected(cx, cy)) { 1568 drawcol = dc.col[defaultcs]; 1569 g.fg = defaultrcs; 1570 } else { 1571 drawcol = dc.col[defaultrcs]; 1572 g.fg = defaultcs; 1573 } 1574 } else { 1575 if (selected(cx, cy)) { 1576 g.fg = defaultfg; 1577 g.bg = defaultrcs; 1578 } else { 1579 g.fg = defaultbg; 1580 g.bg = defaultcs; 1581 } 1582 drawcol = dc.col[g.bg]; 1583 } 1584 1585 /* draw the new one */ 1586 if (IS_SET(MODE_FOCUSED)) { 1587 switch (win.cursor) { 1588 case 7: /* st extension */ 1589 g.u = 0x2603; /* snowman (U+2603) */ 1590 /* FALLTHROUGH */ 1591 case 0: /* Blinking Block */ 1592 case 1: /* Blinking Block (Default) */ 1593 case 2: /* Steady Block */ 1594 xdrawglyph(g, cx, cy); 1595 break; 1596 case 3: /* Blinking Underline */ 1597 case 4: /* Steady Underline */ 1598 XftDrawRect(xw.draw, &drawcol, 1599 borderpx + cx * win.cw, 1600 borderpx + (cy + 1) * win.ch - \ 1601 cursorthickness, 1602 win.cw, cursorthickness); 1603 break; 1604 case 5: /* Blinking bar */ 1605 case 6: /* Steady bar */ 1606 XftDrawRect(xw.draw, &drawcol, 1607 borderpx + cx * win.cw, 1608 borderpx + cy * win.ch, 1609 cursorthickness, win.ch); 1610 break; 1611 } 1612 } else { 1613 XftDrawRect(xw.draw, &drawcol, 1614 borderpx + cx * win.cw, 1615 borderpx + cy * win.ch, 1616 win.cw - 1, 1); 1617 XftDrawRect(xw.draw, &drawcol, 1618 borderpx + cx * win.cw, 1619 borderpx + cy * win.ch, 1620 1, win.ch - 1); 1621 XftDrawRect(xw.draw, &drawcol, 1622 borderpx + (cx + 1) * win.cw - 1, 1623 borderpx + cy * win.ch, 1624 1, win.ch - 1); 1625 XftDrawRect(xw.draw, &drawcol, 1626 borderpx + cx * win.cw, 1627 borderpx + (cy + 1) * win.ch - 1, 1628 win.cw, 1); 1629 } 1630 } 1631 1632 void 1633 xsetenv(void) 1634 { 1635 char buf[sizeof(long) * 8 + 1]; 1636 1637 snprintf(buf, sizeof(buf), "%lu", xw.win); 1638 setenv("WINDOWID", buf, 1); 1639 } 1640 1641 void 1642 xseticontitle(char *p) 1643 { 1644 XTextProperty prop; 1645 DEFAULT(p, opt_title); 1646 1647 if (p[0] == '\0') 1648 p = opt_title; 1649 1650 if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle, 1651 &prop) != Success) 1652 return; 1653 XSetWMIconName(xw.dpy, xw.win, &prop); 1654 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmiconname); 1655 XFree(prop.value); 1656 } 1657 1658 void 1659 xsettitle(char *p) 1660 { 1661 XTextProperty prop; 1662 DEFAULT(p, opt_title); 1663 1664 if (p[0] == '\0') 1665 p = opt_title; 1666 1667 if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle, 1668 &prop) != Success) 1669 return; 1670 XSetWMName(xw.dpy, xw.win, &prop); 1671 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname); 1672 XFree(prop.value); 1673 } 1674 1675 int 1676 xstartdraw(void) 1677 { 1678 return IS_SET(MODE_VISIBLE); 1679 } 1680 1681 void 1682 xdrawline(Line line, int x1, int y1, int x2) 1683 { 1684 int i, x, ox, numspecs; 1685 Glyph base, new; 1686 XftGlyphFontSpec *specs = xw.specbuf; 1687 1688 numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1); 1689 i = ox = 0; 1690 for (x = x1; x < x2 && i < numspecs; x++) { 1691 new = line[x]; 1692 if (new.mode == ATTR_WDUMMY) 1693 continue; 1694 if (selected(x, y1)) 1695 new.mode ^= ATTR_REVERSE; 1696 if (i > 0 && ATTRCMP(base, new)) { 1697 xdrawglyphfontspecs(specs, base, i, ox, y1); 1698 specs += i; 1699 numspecs -= i; 1700 i = 0; 1701 } 1702 if (i == 0) { 1703 ox = x; 1704 base = new; 1705 } 1706 i++; 1707 } 1708 if (i > 0) 1709 xdrawglyphfontspecs(specs, base, i, ox, y1); 1710 } 1711 1712 void 1713 xfinishdraw(void) 1714 { 1715 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w, 1716 win.h, 0, 0); 1717 XSetForeground(xw.dpy, dc.gc, 1718 dc.col[IS_SET(MODE_REVERSE)? 1719 defaultfg : defaultbg].pixel); 1720 } 1721 1722 void 1723 xximspot(int x, int y) 1724 { 1725 if (xw.ime.xic == NULL) 1726 return; 1727 1728 xw.ime.spot.x = borderpx + x * win.cw; 1729 xw.ime.spot.y = borderpx + (y + 1) * win.ch; 1730 1731 XSetICValues(xw.ime.xic, XNPreeditAttributes, xw.ime.spotlist, NULL); 1732 } 1733 1734 void 1735 expose(XEvent *ev) 1736 { 1737 redraw(); 1738 } 1739 1740 void 1741 visibility(XEvent *ev) 1742 { 1743 XVisibilityEvent *e = &ev->xvisibility; 1744 1745 MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE); 1746 } 1747 1748 void 1749 unmap(XEvent *ev) 1750 { 1751 win.mode &= ~MODE_VISIBLE; 1752 } 1753 1754 void 1755 xsetpointermotion(int set) 1756 { 1757 MODBIT(xw.attrs.event_mask, set, PointerMotionMask); 1758 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs); 1759 } 1760 1761 void 1762 xsetmode(int set, unsigned int flags) 1763 { 1764 int mode = win.mode; 1765 MODBIT(win.mode, set, flags); 1766 if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE)) 1767 redraw(); 1768 } 1769 1770 int 1771 xsetcursor(int cursor) 1772 { 1773 if (!BETWEEN(cursor, 0, 7)) /* 7: st extension */ 1774 return 1; 1775 win.cursor = cursor; 1776 return 0; 1777 } 1778 1779 void 1780 xseturgency(int add) 1781 { 1782 XWMHints *h = XGetWMHints(xw.dpy, xw.win); 1783 1784 MODBIT(h->flags, add, XUrgencyHint); 1785 XSetWMHints(xw.dpy, xw.win, h); 1786 XFree(h); 1787 } 1788 1789 void 1790 xbell(void) 1791 { 1792 if (!(IS_SET(MODE_FOCUSED))) 1793 xseturgency(1); 1794 if (bellvolume) 1795 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL); 1796 } 1797 1798 void 1799 focus(XEvent *ev) 1800 { 1801 XFocusChangeEvent *e = &ev->xfocus; 1802 1803 if (e->mode == NotifyGrab) 1804 return; 1805 1806 if (ev->type == FocusIn) { 1807 if (xw.ime.xic) 1808 XSetICFocus(xw.ime.xic); 1809 win.mode |= MODE_FOCUSED; 1810 xseturgency(0); 1811 if (IS_SET(MODE_FOCUS)) 1812 ttywrite("\033[I", 3, 0); 1813 } else { 1814 if (xw.ime.xic) 1815 XUnsetICFocus(xw.ime.xic); 1816 win.mode &= ~MODE_FOCUSED; 1817 if (IS_SET(MODE_FOCUS)) 1818 ttywrite("\033[O", 3, 0); 1819 } 1820 } 1821 1822 int 1823 match(uint mask, uint state) 1824 { 1825 return mask == XK_ANY_MOD || mask == (state & ~ignoremod); 1826 } 1827 1828 char* 1829 kmap(KeySym k, uint state) 1830 { 1831 Key *kp; 1832 int i; 1833 1834 /* Check for mapped keys out of X11 function keys. */ 1835 for (i = 0; i < LEN(mappedkeys); i++) { 1836 if (mappedkeys[i] == k) 1837 break; 1838 } 1839 if (i == LEN(mappedkeys)) { 1840 if ((k & 0xFFFF) < 0xFD00) 1841 return NULL; 1842 } 1843 1844 for (kp = key; kp < key + LEN(key); kp++) { 1845 if (kp->k != k) 1846 continue; 1847 1848 if (!match(kp->mask, state)) 1849 continue; 1850 1851 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0) 1852 continue; 1853 if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2) 1854 continue; 1855 1856 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0) 1857 continue; 1858 1859 return kp->s; 1860 } 1861 1862 return NULL; 1863 } 1864 1865 void 1866 kpress(XEvent *ev) 1867 { 1868 XKeyEvent *e = &ev->xkey; 1869 KeySym ksym = NoSymbol; 1870 char buf[64], *customkey; 1871 int len; 1872 Rune c; 1873 Status status; 1874 Shortcut *bp; 1875 1876 if (IS_SET(MODE_KBDLOCK)) 1877 return; 1878 1879 if (xw.ime.xic) { 1880 len = XmbLookupString(xw.ime.xic, e, buf, sizeof buf, &ksym, &status); 1881 if (status == XBufferOverflow) 1882 return; 1883 } else { 1884 len = XLookupString(e, buf, sizeof buf, &ksym, NULL); 1885 } 1886 /* 1. shortcuts */ 1887 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) { 1888 if (ksym == bp->keysym && match(bp->mod, e->state)) { 1889 bp->func(&(bp->arg)); 1890 return; 1891 } 1892 } 1893 1894 /* 2. custom keys from config.h */ 1895 if ((customkey = kmap(ksym, e->state))) { 1896 ttywrite(customkey, strlen(customkey), 1); 1897 return; 1898 } 1899 1900 /* 3. composed string from input method */ 1901 if (len == 0) 1902 return; 1903 if (len == 1 && e->state & Mod1Mask) { 1904 if (IS_SET(MODE_8BIT)) { 1905 if (*buf < 0177) { 1906 c = *buf | 0x80; 1907 len = utf8encode(c, buf); 1908 } 1909 } else { 1910 buf[1] = buf[0]; 1911 buf[0] = '\033'; 1912 len = 2; 1913 } 1914 } 1915 ttywrite(buf, len, 1); 1916 } 1917 1918 void 1919 cmessage(XEvent *e) 1920 { 1921 /* 1922 * See xembed specs 1923 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html 1924 */ 1925 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) { 1926 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) { 1927 win.mode |= MODE_FOCUSED; 1928 xseturgency(0); 1929 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) { 1930 win.mode &= ~MODE_FOCUSED; 1931 } 1932 } else if (e->xclient.data.l[0] == xw.wmdeletewin) { 1933 ttyhangup(); 1934 exit(0); 1935 } 1936 } 1937 1938 void 1939 resize(XEvent *e) 1940 { 1941 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h) 1942 return; 1943 1944 cresize(e->xconfigure.width, e->xconfigure.height); 1945 } 1946 1947 void 1948 run(void) 1949 { 1950 XEvent ev; 1951 int w = win.w, h = win.h; 1952 fd_set rfd; 1953 int xfd = XConnectionNumber(xw.dpy), ttyfd, xev, drawing; 1954 struct timespec seltv, *tv, now, lastblink, trigger; 1955 double timeout; 1956 1957 /* Waiting for window mapping */ 1958 do { 1959 XNextEvent(xw.dpy, &ev); 1960 /* 1961 * This XFilterEvent call is required because of XOpenIM. It 1962 * does filter out the key event and some client message for 1963 * the input method too. 1964 */ 1965 if (XFilterEvent(&ev, None)) 1966 continue; 1967 if (ev.type == ConfigureNotify) { 1968 w = ev.xconfigure.width; 1969 h = ev.xconfigure.height; 1970 } 1971 } while (ev.type != MapNotify); 1972 1973 ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd); 1974 cresize(w, h); 1975 1976 for (timeout = -1, drawing = 0, lastblink = (struct timespec){0};;) { 1977 FD_ZERO(&rfd); 1978 FD_SET(ttyfd, &rfd); 1979 FD_SET(xfd, &rfd); 1980 1981 if (XPending(xw.dpy)) 1982 timeout = 0; /* existing events might not set xfd */ 1983 1984 seltv.tv_sec = timeout / 1E3; 1985 seltv.tv_nsec = 1E6 * (timeout - 1E3 * seltv.tv_sec); 1986 tv = timeout >= 0 ? &seltv : NULL; 1987 1988 if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) { 1989 if (errno == EINTR) 1990 continue; 1991 die("select failed: %s\n", strerror(errno)); 1992 } 1993 clock_gettime(CLOCK_MONOTONIC, &now); 1994 1995 if (FD_ISSET(ttyfd, &rfd)) 1996 ttyread(); 1997 1998 xev = 0; 1999 while (XPending(xw.dpy)) { 2000 xev = 1; 2001 XNextEvent(xw.dpy, &ev); 2002 if (XFilterEvent(&ev, None)) 2003 continue; 2004 if (handler[ev.type]) 2005 (handler[ev.type])(&ev); 2006 } 2007 2008 /* 2009 * To reduce flicker and tearing, when new content or event 2010 * triggers drawing, we first wait a bit to ensure we got 2011 * everything, and if nothing new arrives - we draw. 2012 * We start with trying to wait minlatency ms. If more content 2013 * arrives sooner, we retry with shorter and shorter periods, 2014 * and eventually draw even without idle after maxlatency ms. 2015 * Typically this results in low latency while interacting, 2016 * maximum latency intervals during `cat huge.txt`, and perfect 2017 * sync with periodic updates from animations/key-repeats/etc. 2018 */ 2019 if (FD_ISSET(ttyfd, &rfd) || xev) { 2020 if (!drawing) { 2021 trigger = now; 2022 drawing = 1; 2023 } 2024 timeout = (maxlatency - TIMEDIFF(now, trigger)) \ 2025 / maxlatency * minlatency; 2026 if (timeout > 0) 2027 continue; /* we have time, try to find idle */ 2028 } 2029 2030 /* idle detected or maxlatency exhausted -> draw */ 2031 timeout = -1; 2032 if (blinktimeout && tattrset(ATTR_BLINK)) { 2033 timeout = blinktimeout - TIMEDIFF(now, lastblink); 2034 if (timeout <= 0) { 2035 if (-timeout > blinktimeout) /* start visible */ 2036 win.mode |= MODE_BLINK; 2037 win.mode ^= MODE_BLINK; 2038 tsetdirtattr(ATTR_BLINK); 2039 lastblink = now; 2040 timeout = blinktimeout; 2041 } 2042 } 2043 2044 draw(); 2045 XFlush(xw.dpy); 2046 drawing = 0; 2047 } 2048 } 2049 2050 void 2051 usage(void) 2052 { 2053 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]" 2054 " [-n name] [-o file]\n" 2055 " [-T title] [-t title] [-w windowid]" 2056 " [[-e] command [args ...]]\n" 2057 " %s [-aiv] [-c class] [-f font] [-g geometry]" 2058 " [-n name] [-o file]\n" 2059 " [-T title] [-t title] [-w windowid] -l line" 2060 " [stty_args ...]\n", argv0, argv0); 2061 } 2062 2063 int 2064 main(int argc, char *argv[]) 2065 { 2066 xw.l = xw.t = 0; 2067 xw.isfixed = False; 2068 xsetcursor(cursorshape); 2069 2070 ARGBEGIN { 2071 case 'a': 2072 allowaltscreen = 0; 2073 break; 2074 case 'A': 2075 alpha = strtof(EARGF(usage()), NULL); 2076 LIMIT(alpha, 0.0, 1.0); 2077 break; 2078 case 'c': 2079 opt_class = EARGF(usage()); 2080 break; 2081 case 'e': 2082 if (argc > 0) 2083 --argc, ++argv; 2084 goto run; 2085 case 'f': 2086 opt_font = EARGF(usage()); 2087 break; 2088 case 'g': 2089 xw.gm = XParseGeometry(EARGF(usage()), 2090 &xw.l, &xw.t, &cols, &rows); 2091 break; 2092 case 'i': 2093 xw.isfixed = 1; 2094 break; 2095 case 'o': 2096 opt_io = EARGF(usage()); 2097 break; 2098 case 'l': 2099 opt_line = EARGF(usage()); 2100 break; 2101 case 'n': 2102 opt_name = EARGF(usage()); 2103 break; 2104 case 't': 2105 case 'T': 2106 opt_title = EARGF(usage()); 2107 break; 2108 case 'w': 2109 opt_embed = EARGF(usage()); 2110 break; 2111 case 'v': 2112 die("%s " VERSION "\n", argv0); 2113 break; 2114 default: 2115 usage(); 2116 } ARGEND; 2117 2118 run: 2119 if (argc > 0) /* eat all remaining arguments */ 2120 opt_cmd = argv; 2121 2122 if (!opt_title) 2123 opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0]; 2124 2125 setlocale(LC_CTYPE, ""); 2126 XSetLocaleModifiers(""); 2127 cols = MAX(cols, 1); 2128 rows = MAX(rows, 1); 2129 tnew(cols, rows); 2130 xinit(cols, rows); 2131 xsetenv(); 2132 selinit(); 2133 run(); 2134 2135 return 0; 2136 }