x.c

   1 /* See LICENSE for license details. */
   2 #include <errno.h>
   3 #include <locale.h>
   4 #include <signal.h>
   5 #include <stdint.h>
   6 #include <sys/select.h>
   7 #include <time.h>
   8 #include <unistd.h>
   9 #include <libgen.h>
  10 #include <X11/Xatom.h>
  11 #include <X11/Xlib.h>
  12 #include <X11/Xutil.h>
  13 #include <X11/cursorfont.h>
  14 #include <X11/keysym.h>
  15 #include <X11/Xft/Xft.h>
  16 #include <X11/XKBlib.h>
  17
  18 static char *argv0;
  19 #include "arg.h"
  20 #include "st.h"
  21 #include "win.h"
  22
  23 /* XEMBED messages */
  24 #define XEMBED_FOCUS_IN  4
  25 #define XEMBED_FOCUS_OUT 5
  26
  27 /* macros */
  28 #define TRUERED(x)              (((x) & 0xff0000) >> 8)
  29 #define TRUEGREEN(x)            (((x) & 0xff00))
  30 #define TRUEBLUE(x)             (((x) & 0xff) << 8)
  31
  32 typedef XftDraw *Draw;
  33 typedef XftColor Color;
  34 typedef XftGlyphFontSpec GlyphFontSpec;
  35
  36 /* Purely graphic info */
  37 typedef struct {
  38         Display *dpy;
  39         Colormap cmap;
  40         Window win;
  41         Drawable buf;
  42         GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
  43         Atom xembed, wmdeletewin, netwmname, netwmpid;
  44         XIM xim;
  45         XIC xic;
  46         Draw draw;
  47         Visual *vis;
  48         XSetWindowAttributes attrs;
  49         int scr;
  50         int isfixed; /* is fixed geometry? */
  51         int l, t; /* left and top offset */
  52         int gm; /* geometry mask */
  53 } XWindow;
  54
  55 typedef struct {
  56         Atom xtarget;
  57 } XSelection;
  58
  59 /* Font structure */
  60 #define Font Font_
  61 typedef struct {
  62         int height;
  63         int width;
  64         int ascent;
  65         int descent;
  66         int badslant;
  67         int badweight;
  68         short lbearing;
  69         short rbearing;
  70         XftFont *match;
  71         FcFontSet *set;
  72         FcPattern *pattern;
  73 } Font;
  74
  75 /* Drawing Context */
  76 typedef struct {
  77         Color *col;
  78         size_t collen;
  79         Font font, bfont, ifont, ibfont;
  80         GC gc;
  81 } DC;
  82
  83 static inline ushort sixd_to_16bit(int);
  84 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
  85 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
  86 static void xdrawglyph(Glyph, int, int);
  87 static void xclear(int, int, int, int);
  88 static void xdrawcursor(void);
  89 static int xgeommasktogravity(int);
  90 static void xinit(void);
  91 static void cresize(int, int);
  92 static void xresize(int, int);
  93 static int xloadfont(Font *, FcPattern *);
  94 static void xloadfonts(char *, double);
  95 static void xunloadfont(Font *);
  96 static void xunloadfonts(void);
  97 static void xsetenv(void);
  98 static void xseturgency(int);
  99 static int x2col(int);
 100 static int y2row(int);
 101
 102 static void expose(XEvent *);
 103 static void visibility(XEvent *);
 104 static void unmap(XEvent *);
 105 static void kpress(XEvent *);
 106 static void cmessage(XEvent *);
 107 static void resize(XEvent *);
 108 static void focus(XEvent *);
 109 static void brelease(XEvent *);
 110 static void bpress(XEvent *);
 111 static void bmotion(XEvent *);
 112 static void propnotify(XEvent *);
 113 static void selnotify(XEvent *);
 114 static void selclear_(XEvent *);
 115 static void selrequest(XEvent *);
 116 static void selcopy(Time);
 117 static void getbuttoninfo(XEvent *);
 118 static void mousereport(XEvent *);
 119 static char *kmap(KeySym, uint);
 120 static int match(uint, uint);
 121
 122 static void run(void);
 123 static void usage(void);
 124
 125 static void (*handler[LASTEvent])(XEvent *) = {
 126         [KeyPress] = kpress,
 127         [ClientMessage] = cmessage,
 128         [ConfigureNotify] = resize,
 129         [VisibilityNotify] = visibility,
 130         [UnmapNotify] = unmap,
 131         [Expose] = expose,
 132         [FocusIn] = focus,
 133         [FocusOut] = focus,
 134         [MotionNotify] = bmotion,
 135         [ButtonPress] = bpress,
 136         [ButtonRelease] = brelease,
 137 /*
 138  * Uncomment if you want the selection to disappear when you select something
 139  * different in another window.
 140  */
 141 /*      [SelectionClear] = selclear_, */
 142         [SelectionNotify] = selnotify,
 143 /*
 144  * PropertyNotify is only turned on when there is some INCR transfer happening
 145  * for the selection retrieval.
 146  */
 147         [PropertyNotify] = propnotify,
 148         [SelectionRequest] = selrequest,
 149 };
 150
 151 /* Globals */
 152 static DC dc;
 153 static XWindow xw;
 154 static XSelection xsel;
 155
 156 enum window_state {
 157         WIN_VISIBLE = 1,
 158         WIN_FOCUSED = 2
 159 };
 160
 161 /* Font Ring Cache */
 162 enum {
 163         FRC_NORMAL,
 164         FRC_ITALIC,
 165         FRC_BOLD,
 166         FRC_ITALICBOLD
 167 };
 168
 169 typedef struct {
 170         XftFont *font;
 171         int flags;
 172         Rune unicodep;
 173 } Fontcache;
 174
 175 /* Fontcache is an array now. A new font will be appended to the array. */
 176 static Fontcache frc[16];
 177 static int frclen = 0;
 178 static char *usedfont = NULL;
 179 static double usedfontsize = 0;
 180 static double defaultfontsize = 0;
 181
 182 static char *opt_class = NULL;
 183 static char **opt_cmd  = NULL;
 184 static char *opt_embed = NULL;
 185 static char *opt_font  = NULL;
 186 static char *opt_io    = NULL;
 187 static char *opt_line  = NULL;
 188 static char *opt_name  = NULL;
 189 static char *opt_title = NULL;
 190
 191 void
 192 zoom(const Arg *arg)
 193 {
 194         Arg larg;
 195
 196         larg.f = usedfontsize + arg->f;
 197         zoomabs(&larg);
 198 }
 199
 200 void
 201 zoomabs(const Arg *arg)
 202 {
 203         xunloadfonts();
 204         xloadfonts(usedfont, arg->f);
 205         cresize(0, 0);
 206         ttyresize(win.tw, win.th);
 207         redraw();
 208         xhints();
 209 }
 210
 211 void
 212 zoomreset(const Arg *arg)
 213 {
 214         Arg larg;
 215
 216         if (defaultfontsize > 0) {
 217                 larg.f = defaultfontsize;
 218                 zoomabs(&larg);
 219         }
 220 }
 221
 222 int
 223 x2col(int x)
 224 {
 225         x -= borderpx;
 226         x /= win.cw;
 227
 228         return LIMIT(x, 0, term.col-1);
 229 }
 230
 231 int
 232 y2row(int y)
 233 {
 234         y -= borderpx;
 235         y /= win.ch;
 236
 237         return LIMIT(y, 0, term.row-1);
 238 }
 239
 240 void
 241 getbuttoninfo(XEvent *e)
 242 {
 243         int type;
 244         uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
 245
 246         sel.alt = IS_SET(MODE_ALTSCREEN);
 247
 248         sel.oe.x = x2col(e->xbutton.x);
 249         sel.oe.y = y2row(e->xbutton.y);
 250         selnormalize();
 251
 252         sel.type = SEL_REGULAR;
 253         for (type = 1; type < selmaskslen; ++type) {
 254                 if (match(selmasks[type], state)) {
 255                         sel.type = type;
 256                         break;
 257                 }
 258         }
 259 }
 260
 261 void
 262 mousereport(XEvent *e)
 263 {
 264         int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
 265             button = e->xbutton.button, state = e->xbutton.state,
 266             len;
 267         char buf[40];
 268         static int ox, oy;
 269
 270         /* from urxvt */
 271         if (e->xbutton.type == MotionNotify) {
 272                 if (x == ox && y == oy)
 273                         return;
 274                 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
 275                         return;
 276                 /* MOUSE_MOTION: no reporting if no button is pressed */
 277                 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
 278                         return;
 279
 280                 button = oldbutton + 32;
 281                 ox = x;
 282                 oy = y;
 283         } else {
 284                 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
 285                         button = 3;
 286                 } else {
 287                         button -= Button1;
 288                         if (button >= 3)
 289                                 button += 64 - 3;
 290                 }
 291                 if (e->xbutton.type == ButtonPress) {
 292                         oldbutton = button;
 293                         ox = x;
 294                         oy = y;
 295                 } else if (e->xbutton.type == ButtonRelease) {
 296                         oldbutton = 3;
 297                         /* MODE_MOUSEX10: no button release reporting */
 298                         if (IS_SET(MODE_MOUSEX10))
 299                                 return;
 300                         if (button == 64 || button == 65)
 301                                 return;
 302                 }
 303         }
 304
 305         if (!IS_SET(MODE_MOUSEX10)) {
 306                 button += ((state & ShiftMask  ) ? 4  : 0)
 307                         + ((state & Mod4Mask   ) ? 8  : 0)
 308                         + ((state & ControlMask) ? 16 : 0);
 309         }
 310
 311         if (IS_SET(MODE_MOUSESGR)) {
 312                 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
 313                                 button, x+1, y+1,
 314                                 e->xbutton.type == ButtonRelease ? 'm' : 'M');
 315         } else if (x < 223 && y < 223) {
 316                 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
 317                                 32+button, 32+x+1, 32+y+1);
 318         } else {
 319                 return;
 320         }
 321
 322         ttywrite(buf, len);
 323 }
 324
 325 void
 326 bpress(XEvent *e)
 327 {
 328         struct timespec now;
 329         MouseShortcut *ms;
 330
 331         if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
 332                 mousereport(e);
 333                 return;
 334         }
 335
 336         for (ms = mshortcuts; ms < mshortcuts + mshortcutslen; ms++) {
 337                 if (e->xbutton.button == ms->b
 338                                 && match(ms->mask, e->xbutton.state)) {
 339                         ttysend(ms->s, strlen(ms->s));
 340                         return;
 341                 }
 342         }
 343
 344         if (e->xbutton.button == Button1) {
 345                 clock_gettime(CLOCK_MONOTONIC, &now);
 346
 347                 /* Clear previous selection, logically and visually. */
 348                 selclear_(NULL);
 349                 sel.mode = SEL_EMPTY;
 350                 sel.type = SEL_REGULAR;
 351                 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
 352                 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
 353
 354                 /*
 355                  * If the user clicks below predefined timeouts specific
 356                  * snapping behaviour is exposed.
 357                  */
 358                 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
 359                         sel.snap = SNAP_LINE;
 360                 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
 361                         sel.snap = SNAP_WORD;
 362                 } else {
 363                         sel.snap = 0;
 364                 }
 365                 selnormalize();
 366
 367                 if (sel.snap != 0)
 368                         sel.mode = SEL_READY;
 369                 tsetdirt(sel.nb.y, sel.ne.y);
 370                 sel.tclick2 = sel.tclick1;
 371                 sel.tclick1 = now;
 372         }
 373 }
 374
 375 void
 376 selcopy(Time t)
 377 {
 378         xsetsel(getsel(), t);
 379 }
 380
 381 void
 382 propnotify(XEvent *e)
 383 {
 384         XPropertyEvent *xpev;
 385         Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
 386
 387         xpev = &e->xproperty;
 388         if (xpev->state == PropertyNewValue &&
 389                         (xpev->atom == XA_PRIMARY ||
 390                          xpev->atom == clipboard)) {
 391                 selnotify(e);
 392         }
 393 }
 394
 395 void
 396 selnotify(XEvent *e)
 397 {
 398         ulong nitems, ofs, rem;
 399         int format;
 400         uchar *data, *last, *repl;
 401         Atom type, incratom, property;
 402
 403         incratom = XInternAtom(xw.dpy, "INCR", 0);
 404
 405         ofs = 0;
 406         if (e->type == SelectionNotify) {
 407                 property = e->xselection.property;
 408         } else if(e->type == PropertyNotify) {
 409                 property = e->xproperty.atom;
 410         } else {
 411                 return;
 412         }
 413         if (property == None)
 414                 return;
 415
 416         do {
 417                 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
 418                                         BUFSIZ/4, False, AnyPropertyType,
 419                                         &type, &format, &nitems, &rem,
 420                                         &data)) {
 421                         fprintf(stderr, "Clipboard allocation failed\n");
 422                         return;
 423                 }
 424
 425                 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
 426                         /*
 427                          * If there is some PropertyNotify with no data, then
 428                          * this is the signal of the selection owner that all
 429                          * data has been transferred. We won't need to receive
 430                          * PropertyNotify events anymore.
 431                          */
 432                         MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
 433                         XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
 434                                         &xw.attrs);
 435                 }
 436
 437                 if (type == incratom) {
 438                         /*
 439                          * Activate the PropertyNotify events so we receive
 440                          * when the selection owner does send us the next
 441                          * chunk of data.
 442                          */
 443                         MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
 444                         XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
 445                                         &xw.attrs);
 446
 447                         /*
 448                          * Deleting the property is the transfer start signal.
 449                          */
 450                         XDeleteProperty(xw.dpy, xw.win, (int)property);
 451                         continue;
 452                 }
 453
 454                 /*
 455                  * As seen in getsel:
 456                  * Line endings are inconsistent in the terminal and GUI world
 457                  * copy and pasting. When receiving some selection data,
 458                  * replace all '\n' with '\r'.
 459                  * FIXME: Fix the computer world.
 460                  */
 461                 repl = data;
 462                 last = data + nitems * format / 8;
 463                 while ((repl = memchr(repl, '\n', last - repl))) {
 464                         *repl++ = '\r';
 465                 }
 466
 467                 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
 468                         ttywrite("\033[200~", 6);
 469                 ttysend((char *)data, nitems * format / 8);
 470                 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
 471                         ttywrite("\033[201~", 6);
 472                 XFree(data);
 473                 /* number of 32-bit chunks returned */
 474                 ofs += nitems * format / 32;
 475         } while (rem > 0);
 476
 477         /*
 478          * Deleting the property again tells the selection owner to send the
 479          * next data chunk in the property.
 480          */
 481         XDeleteProperty(xw.dpy, xw.win, (int)property);
 482 }
 483
 484 void
 485 xselpaste(void)
 486 {
 487         XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
 488                         xw.win, CurrentTime);
 489 }
 490
 491 void
 492 xclipcopy(void)
 493 {
 494         Atom clipboard;
 495
 496         if (sel.clipboard != NULL)
 497                 free(sel.clipboard);
 498
 499         if (sel.primary != NULL) {
 500                 sel.clipboard = xstrdup(sel.primary);
 501                 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
 502                 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
 503         }
 504 }
 505
 506 void
 507 xclippaste(void)
 508 {
 509         Atom clipboard;
 510
 511         clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
 512         XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
 513                         xw.win, CurrentTime);
 514 }
 515
 516 void
 517 selclear_(XEvent *e)
 518 {
 519         selclear();
 520 }
 521
 522 void
 523 selrequest(XEvent *e)
 524 {
 525         XSelectionRequestEvent *xsre;
 526         XSelectionEvent xev;
 527         Atom xa_targets, string, clipboard;
 528         char *seltext;
 529
 530         xsre = (XSelectionRequestEvent *) e;
 531         xev.type = SelectionNotify;
 532         xev.requestor = xsre->requestor;
 533         xev.selection = xsre->selection;
 534         xev.target = xsre->target;
 535         xev.time = xsre->time;
 536         if (xsre->property == None)
 537                 xsre->property = xsre->target;
 538
 539         /* reject */
 540         xev.property = None;
 541
 542         xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
 543         if (xsre->target == xa_targets) {
 544                 /* respond with the supported type */
 545                 string = xsel.xtarget;
 546                 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
 547                                 XA_ATOM, 32, PropModeReplace,
 548                                 (uchar *) &string, 1);
 549                 xev.property = xsre->property;
 550         } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
 551                 /*
 552                  * xith XA_STRING non ascii characters may be incorrect in the
 553                  * requestor. It is not our problem, use utf8.
 554                  */
 555                 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
 556                 if (xsre->selection == XA_PRIMARY) {
 557                         seltext = sel.primary;
 558                 } else if (xsre->selection == clipboard) {
 559                         seltext = sel.clipboard;
 560                 } else {
 561                         fprintf(stderr,
 562                                 "Unhandled clipboard selection 0x%lx\n",
 563                                 xsre->selection);
 564                         return;
 565                 }
 566                 if (seltext != NULL) {
 567                         XChangeProperty(xsre->display, xsre->requestor,
 568                                         xsre->property, xsre->target,
 569                                         8, PropModeReplace,
 570                                         (uchar *)seltext, strlen(seltext));
 571                         xev.property = xsre->property;
 572                 }
 573         }
 574
 575         /* all done, send a notification to the listener */
 576         if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
 577                 fprintf(stderr, "Error sending SelectionNotify event\n");
 578 }
 579
 580 void
 581 xsetsel(char *str, Time t)
 582 {
 583         free(sel.primary);
 584         sel.primary = str;
 585
 586         XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
 587         if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
 588                 selclear_(NULL);
 589 }
 590
 591 void
 592 brelease(XEvent *e)
 593 {
 594         if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
 595                 mousereport(e);
 596                 return;
 597         }
 598
 599         if (e->xbutton.button == Button2) {
 600                 xselpaste();
 601         } else if (e->xbutton.button == Button1) {
 602                 if (sel.mode == SEL_READY) {
 603                         getbuttoninfo(e);
 604                         selcopy(e->xbutton.time);
 605                 } else
 606                         selclear_(NULL);
 607                 sel.mode = SEL_IDLE;
 608                 tsetdirt(sel.nb.y, sel.ne.y);
 609         }
 610 }
 611
 612 void
 613 bmotion(XEvent *e)
 614 {
 615         int oldey, oldex, oldsby, oldsey;
 616
 617         if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
 618                 mousereport(e);
 619                 return;
 620         }
 621
 622         if (!sel.mode)
 623                 return;
 624
 625         sel.mode = SEL_READY;
 626         oldey = sel.oe.y;
 627         oldex = sel.oe.x;
 628         oldsby = sel.nb.y;
 629         oldsey = sel.ne.y;
 630         getbuttoninfo(e);
 631
 632         if (oldey != sel.oe.y || oldex != sel.oe.x)
 633                 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
 634 }
 635
 636 void
 637 cresize(int width, int height)
 638 {
 639         int col, row;
 640
 641         if (width != 0)
 642                 win.w = width;
 643         if (height != 0)
 644                 win.h = height;
 645
 646         col = (win.w - 2 * borderpx) / win.cw;
 647         row = (win.h - 2 * borderpx) / win.ch;
 648
 649         tresize(col, row);
 650         xresize(col, row);
 651 }
 652
 653 void
 654 xresize(int col, int row)
 655 {
 656         win.tw = MAX(1, col * win.cw);
 657         win.th = MAX(1, row * win.ch);
 658
 659         XFreePixmap(xw.dpy, xw.buf);
 660         xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
 661                         DefaultDepth(xw.dpy, xw.scr));
 662         XftDrawChange(xw.draw, xw.buf);
 663         xclear(0, 0, win.w, win.h);
 664
 665         /* resize to new width */
 666         xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
 667 }
 668
 669 ushort
 670 sixd_to_16bit(int x)
 671 {
 672         return x == 0 ? 0 : 0x3737 + 0x2828 * x;
 673 }
 674
 675 int
 676 xloadcolor(int i, const char *name, Color *ncolor)
 677 {
 678         XRenderColor color = { .alpha = 0xffff };
 679
 680         if (!name) {
 681                 if (BETWEEN(i, 16, 255)) { /* 256 color */
 682                         if (i < 6*6*6+16) { /* same colors as xterm */
 683                                 color.red   = sixd_to_16bit( ((i-16)/36)%6 );
 684                                 color.green = sixd_to_16bit( ((i-16)/6) %6 );
 685                                 color.blue  = sixd_to_16bit( ((i-16)/1) %6 );
 686                         } else { /* greyscale */
 687                                 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
 688                                 color.green = color.blue = color.red;
 689                         }
 690                         return XftColorAllocValue(xw.dpy, xw.vis,
 691                                                   xw.cmap, &color, ncolor);
 692                 } else
 693                         name = colorname[i];
 694         }
 695
 696         return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
 697 }
 698
 699 void
 700 xloadcols(void)
 701 {
 702         int i;
 703         static int loaded;
 704         Color *cp;
 705
 706         dc.collen = MAX(colornamelen, 256);
 707         dc.col = xmalloc(dc.collen * sizeof(Color));
 708
 709         if (loaded) {
 710                 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
 711                         XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
 712         }
 713
 714         for (i = 0; i < dc.collen; i++)
 715                 if (!xloadcolor(i, NULL, &dc.col[i])) {
 716                         if (colorname[i])
 717                                 die("Could not allocate color '%s'\n", colorname[i]);
 718                         else
 719                                 die("Could not allocate color %d\n", i);
 720                 }
 721         loaded = 1;
 722 }
 723
 724 int
 725 xsetcolorname(int x, const char *name)
 726 {
 727         Color ncolor;
 728
 729         if (!BETWEEN(x, 0, dc.collen))
 730                 return 1;
 731
 732
 733         if (!xloadcolor(x, name, &ncolor))
 734                 return 1;
 735
 736         XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
 737         dc.col[x] = ncolor;
 738
 739         return 0;
 740 }
 741
 742 /*
 743  * Absolute coordinates.
 744  */
 745 void
 746 xclear(int x1, int y1, int x2, int y2)
 747 {
 748         XftDrawRect(xw.draw,
 749                         &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
 750                         x1, y1, x2-x1, y2-y1);
 751 }
 752
 753 void
 754 xhints(void)
 755 {
 756         XClassHint class = {opt_name ? opt_name : termname,
 757                             opt_class ? opt_class : termname};
 758         XWMHints wm = {.flags = InputHint, .input = 1};
 759         XSizeHints *sizeh = NULL;
 760
 761         sizeh = XAllocSizeHints();
 762
 763         sizeh->flags = PSize | PResizeInc | PBaseSize;
 764         sizeh->height = win.h;
 765         sizeh->width = win.w;
 766         sizeh->height_inc = win.ch;
 767         sizeh->width_inc = win.cw;
 768         sizeh->base_height = 2 * borderpx;
 769         sizeh->base_width = 2 * borderpx;
 770         if (xw.isfixed) {
 771                 sizeh->flags |= PMaxSize | PMinSize;
 772                 sizeh->min_width = sizeh->max_width = win.w;
 773                 sizeh->min_height = sizeh->max_height = win.h;
 774         }
 775         if (xw.gm & (XValue|YValue)) {
 776                 sizeh->flags |= USPosition | PWinGravity;
 777                 sizeh->x = xw.l;
 778                 sizeh->y = xw.t;
 779                 sizeh->win_gravity = xgeommasktogravity(xw.gm);
 780         }
 781
 782         XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
 783                         &class);
 784         XFree(sizeh);
 785 }
 786
 787 int
 788 xgeommasktogravity(int mask)
 789 {
 790         switch (mask & (XNegative|YNegative)) {
 791         case 0:
 792                 return NorthWestGravity;
 793         case XNegative:
 794                 return NorthEastGravity;
 795         case YNegative:
 796                 return SouthWestGravity;
 797         }
 798
 799         return SouthEastGravity;
 800 }
 801
 802 int
 803 xloadfont(Font *f, FcPattern *pattern)
 804 {
 805         FcPattern *configured;
 806         FcPattern *match;
 807         FcResult result;
 808         XGlyphInfo extents;
 809         int wantattr, haveattr;
 810
 811         /*
 812          * Manually configure instead of calling XftMatchFont
 813          * so that we can use the configured pattern for
 814          * "missing glyph" lookups.
 815          */
 816         configured = FcPatternDuplicate(pattern);
 817         if (!configured)
 818                 return 1;
 819
 820         FcConfigSubstitute(NULL, configured, FcMatchPattern);
 821         XftDefaultSubstitute(xw.dpy, xw.scr, configured);
 822
 823         match = FcFontMatch(NULL, configured, &result);
 824         if (!match) {
 825                 FcPatternDestroy(configured);
 826                 return 1;
 827         }
 828
 829         if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
 830                 FcPatternDestroy(configured);
 831                 FcPatternDestroy(match);
 832                 return 1;
 833         }
 834
 835         if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
 836             XftResultMatch)) {
 837                 /*
 838                  * Check if xft was unable to find a font with the appropriate
 839                  * slant but gave us one anyway. Try to mitigate.
 840                  */
 841                 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
 842                     &haveattr) != XftResultMatch) || haveattr < wantattr) {
 843                         f->badslant = 1;
 844                         fputs("st: font slant does not match\n", stderr);
 845                 }
 846         }
 847
 848         if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
 849             XftResultMatch)) {
 850                 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
 851                     &haveattr) != XftResultMatch) || haveattr != wantattr) {
 852                         f->badweight = 1;
 853                         fputs("st: font weight does not match\n", stderr);
 854                 }
 855         }
 856
 857         XftTextExtentsUtf8(xw.dpy, f->match,
 858                 (const FcChar8 *) ascii_printable,
 859                 strlen(ascii_printable), &extents);
 860
 861         f->set = NULL;
 862         f->pattern = configured;
 863
 864         f->ascent = f->match->ascent;
 865         f->descent = f->match->descent;
 866         f->lbearing = 0;
 867         f->rbearing = f->match->max_advance_width;
 868
 869         f->height = f->ascent + f->descent;
 870         f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
 871
 872         return 0;
 873 }
 874
 875 void
 876 xloadfonts(char *fontstr, double fontsize)
 877 {
 878         FcPattern *pattern;
 879         double fontval;
 880         float ceilf(float);
 881
 882         if (fontstr[0] == '-') {
 883                 pattern = XftXlfdParse(fontstr, False, False);
 884         } else {
 885                 pattern = FcNameParse((FcChar8 *)fontstr);
 886         }
 887
 888         if (!pattern)
 889                 die("st: can't open font %s\n", fontstr);
 890
 891         if (fontsize > 1) {
 892                 FcPatternDel(pattern, FC_PIXEL_SIZE);
 893                 FcPatternDel(pattern, FC_SIZE);
 894                 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
 895                 usedfontsize = fontsize;
 896         } else {
 897                 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
 898                                 FcResultMatch) {
 899                         usedfontsize = fontval;
 900                 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
 901                                 FcResultMatch) {
 902                         usedfontsize = -1;
 903                 } else {
 904                         /*
 905                          * Default font size is 12, if none given. This is to
 906                          * have a known usedfontsize value.
 907                          */
 908                         FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
 909                         usedfontsize = 12;
 910                 }
 911                 defaultfontsize = usedfontsize;
 912         }
 913
 914         if (xloadfont(&dc.font, pattern))
 915                 die("st: can't open font %s\n", fontstr);
 916
 917         if (usedfontsize < 0) {
 918                 FcPatternGetDouble(dc.font.match->pattern,
 919                                    FC_PIXEL_SIZE, 0, &fontval);
 920                 usedfontsize = fontval;
 921                 if (fontsize == 0)
 922                         defaultfontsize = fontval;
 923         }
 924
 925         /* Setting character width and height. */
 926         win.cw = ceilf(dc.font.width * cwscale);
 927         win.ch = ceilf(dc.font.height * chscale);
 928
 929         FcPatternDel(pattern, FC_SLANT);
 930         FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
 931         if (xloadfont(&dc.ifont, pattern))
 932                 die("st: can't open font %s\n", fontstr);
 933
 934         FcPatternDel(pattern, FC_WEIGHT);
 935         FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
 936         if (xloadfont(&dc.ibfont, pattern))
 937                 die("st: can't open font %s\n", fontstr);
 938
 939         FcPatternDel(pattern, FC_SLANT);
 940         FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
 941         if (xloadfont(&dc.bfont, pattern))
 942                 die("st: can't open font %s\n", fontstr);
 943
 944         FcPatternDestroy(pattern);
 945 }
 946
 947 void
 948 xunloadfont(Font *f)
 949 {
 950         XftFontClose(xw.dpy, f->match);
 951         FcPatternDestroy(f->pattern);
 952         if (f->set)
 953                 FcFontSetDestroy(f->set);
 954 }
 955
 956 void
 957 xunloadfonts(void)
 958 {
 959         /* Free the loaded fonts in the font cache.  */
 960         while (frclen > 0)
 961                 XftFontClose(xw.dpy, frc[--frclen].font);
 962
 963         xunloadfont(&dc.font);
 964         xunloadfont(&dc.bfont);
 965         xunloadfont(&dc.ifont);
 966         xunloadfont(&dc.ibfont);
 967 }
 968
 969 void
 970 xinit(void)
 971 {
 972         XGCValues gcvalues;
 973         Cursor cursor;
 974         Window parent;
 975         pid_t thispid = getpid();
 976         XColor xmousefg, xmousebg;
 977
 978         if (!(xw.dpy = XOpenDisplay(NULL)))
 979                 die("Can't open display\n");
 980         xw.scr = XDefaultScreen(xw.dpy);
 981         xw.vis = XDefaultVisual(xw.dpy, xw.scr);
 982
 983         /* font */
 984         if (!FcInit())
 985                 die("Could not init fontconfig.\n");
 986
 987         usedfont = (opt_font == NULL)? font : opt_font;
 988         xloadfonts(usedfont, 0);
 989
 990         /* colors */
 991         xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
 992         xloadcols();
 993
 994         /* adjust fixed window geometry */
 995         win.w = 2 * borderpx + term.col * win.cw;
 996         win.h = 2 * borderpx + term.row * win.ch;
 997         if (xw.gm & XNegative)
 998                 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
 999         if (xw.gm & YNegative)
1000                 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
1001
1002         /* Events */
1003         xw.attrs.background_pixel = dc.col[defaultbg].pixel;
1004         xw.attrs.border_pixel = dc.col[defaultbg].pixel;
1005         xw.attrs.bit_gravity = NorthWestGravity;
1006         xw.attrs.event_mask = FocusChangeMask | KeyPressMask
1007                 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1008                 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
1009         xw.attrs.colormap = xw.cmap;
1010
1011         if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
1012                 parent = XRootWindow(xw.dpy, xw.scr);
1013         xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
1014                         win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1015                         xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
1016                         | CWEventMask | CWColormap, &xw.attrs);
1017
1018         memset(&gcvalues, 0, sizeof(gcvalues));
1019         gcvalues.graphics_exposures = False;
1020         dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
1021                         &gcvalues);
1022         xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
1023                         DefaultDepth(xw.dpy, xw.scr));
1024         XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
1025         XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
1026
1027         /* font spec buffer */
1028         xw.specbuf = xmalloc(term.col * sizeof(GlyphFontSpec));
1029
1030         /* Xft rendering context */
1031         xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
1032
1033         /* input methods */
1034         if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1035                 XSetLocaleModifiers("@im=local");
1036                 if ((xw.xim =  XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1037                         XSetLocaleModifiers("@im=");
1038                         if ((xw.xim = XOpenIM(xw.dpy,
1039                                         NULL, NULL, NULL)) == NULL) {
1040                                 die("XOpenIM failed. Could not open input"
1041                                         " device.\n");
1042                         }
1043                 }
1044         }
1045         xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
1046                                            | XIMStatusNothing, XNClientWindow, xw.win,
1047                                            XNFocusWindow, xw.win, NULL);
1048         if (xw.xic == NULL)
1049                 die("XCreateIC failed. Could not obtain input method.\n");
1050
1051         /* white cursor, black outline */
1052         cursor = XCreateFontCursor(xw.dpy, mouseshape);
1053         XDefineCursor(xw.dpy, xw.win, cursor);
1054
1055         if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
1056                 xmousefg.red   = 0xffff;
1057                 xmousefg.green = 0xffff;
1058                 xmousefg.blue  = 0xffff;
1059         }
1060
1061         if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
1062                 xmousebg.red   = 0x0000;
1063                 xmousebg.green = 0x0000;
1064                 xmousebg.blue  = 0x0000;
1065         }
1066
1067         XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
1068
1069         xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1070         xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
1071         xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
1072         XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
1073
1074         xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
1075         XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
1076                         PropModeReplace, (uchar *)&thispid, 1);
1077
1078         resettitle();
1079         XMapWindow(xw.dpy, xw.win);
1080         xhints();
1081         XSync(xw.dpy, False);
1082
1083         xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
1084         if (xsel.xtarget == None)
1085                 xsel.xtarget = XA_STRING;
1086 }
1087
1088 int
1089 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
1090 {
1091         float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
1092         ushort mode, prevmode = USHRT_MAX;
1093         Font *font = &dc.font;
1094         int frcflags = FRC_NORMAL;
1095         float runewidth = win.cw;
1096         Rune rune;
1097         FT_UInt glyphidx;
1098         FcResult fcres;
1099         FcPattern *fcpattern, *fontpattern;
1100         FcFontSet *fcsets[] = { NULL };
1101         FcCharSet *fccharset;
1102         int i, f, numspecs = 0;
1103
1104         for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1105                 /* Fetch rune and mode for current glyph. */
1106                 rune = glyphs[i].u;
1107                 mode = glyphs[i].mode;
1108
1109                 /* Skip dummy wide-character spacing. */
1110                 if (mode == ATTR_WDUMMY)
1111                         continue;
1112
1113                 /* Determine font for glyph if different from previous glyph. */
1114                 if (prevmode != mode) {
1115                         prevmode = mode;
1116                         font = &dc.font;
1117                         frcflags = FRC_NORMAL;
1118                         runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1119                         if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1120                                 font = &dc.ibfont;
1121                                 frcflags = FRC_ITALICBOLD;
1122                         } else if (mode & ATTR_ITALIC) {
1123                                 font = &dc.ifont;
1124                                 frcflags = FRC_ITALIC;
1125                         } else if (mode & ATTR_BOLD) {
1126                                 font = &dc.bfont;
1127                                 frcflags = FRC_BOLD;
1128                         }
1129                         yp = winy + font->ascent;
1130                 }
1131
1132                 /* Lookup character index with default font. */
1133                 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1134                 if (glyphidx) {
1135                         specs[numspecs].font = font->match;
1136                         specs[numspecs].glyph = glyphidx;
1137                         specs[numspecs].x = (short)xp;
1138                         specs[numspecs].y = (short)yp;
1139                         xp += runewidth;
1140                         numspecs++;
1141                         continue;
1142                 }
1143
1144                 /* Fallback on font cache, search the font cache for match. */
1145                 for (f = 0; f < frclen; f++) {
1146                         glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1147                         /* Everything correct. */
1148                         if (glyphidx && frc[f].flags == frcflags)
1149                                 break;
1150                         /* We got a default font for a not found glyph. */
1151                         if (!glyphidx && frc[f].flags == frcflags
1152                                         && frc[f].unicodep == rune) {
1153                                 break;
1154                         }
1155                 }
1156
1157                 /* Nothing was found. Use fontconfig to find matching font. */
1158                 if (f >= frclen) {
1159                         if (!font->set)
1160                                 font->set = FcFontSort(0, font->pattern,
1161                                                        1, 0, &fcres);
1162                         fcsets[0] = font->set;
1163
1164                         /*
1165                          * Nothing was found in the cache. Now use
1166                          * some dozen of Fontconfig calls to get the
1167                          * font for one single character.
1168                          *
1169                          * Xft and fontconfig are design failures.
1170                          */
1171                         fcpattern = FcPatternDuplicate(font->pattern);
1172                         fccharset = FcCharSetCreate();
1173
1174                         FcCharSetAddChar(fccharset, rune);
1175                         FcPatternAddCharSet(fcpattern, FC_CHARSET,
1176                                         fccharset);
1177                         FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1178
1179                         FcConfigSubstitute(0, fcpattern,
1180                                         FcMatchPattern);
1181                         FcDefaultSubstitute(fcpattern);
1182
1183                         fontpattern = FcFontSetMatch(0, fcsets, 1,
1184                                         fcpattern, &fcres);
1185
1186                         /*
1187                          * Overwrite or create the new cache entry.
1188                          */
1189                         if (frclen >= LEN(frc)) {
1190                                 frclen = LEN(frc) - 1;
1191                                 XftFontClose(xw.dpy, frc[frclen].font);
1192                                 frc[frclen].unicodep = 0;
1193                         }
1194
1195                         frc[frclen].font = XftFontOpenPattern(xw.dpy,
1196                                         fontpattern);
1197                         if (!frc[frclen].font)
1198                                 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1199                                         strerror(errno));
1200                         frc[frclen].flags = frcflags;
1201                         frc[frclen].unicodep = rune;
1202
1203                         glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1204
1205                         f = frclen;
1206                         frclen++;
1207
1208                         FcPatternDestroy(fcpattern);
1209                         FcCharSetDestroy(fccharset);
1210                 }
1211
1212                 specs[numspecs].font = frc[f].font;
1213                 specs[numspecs].glyph = glyphidx;
1214                 specs[numspecs].x = (short)xp;
1215                 specs[numspecs].y = (short)yp;
1216                 xp += runewidth;
1217                 numspecs++;
1218         }
1219
1220         return numspecs;
1221 }
1222
1223 void
1224 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1225 {
1226         int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1227         int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1228             width = charlen * win.cw;
1229         Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1230         XRenderColor colfg, colbg;
1231         XRectangle r;
1232
1233         /* Fallback on color display for attributes not supported by the font */
1234         if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1235                 if (dc.ibfont.badslant || dc.ibfont.badweight)
1236                         base.fg = defaultattr;
1237         } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1238             (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1239                 base.fg = defaultattr;
1240         }
1241
1242         if (IS_TRUECOL(base.fg)) {
1243                 colfg.alpha = 0xffff;
1244                 colfg.red = TRUERED(base.fg);
1245                 colfg.green = TRUEGREEN(base.fg);
1246                 colfg.blue = TRUEBLUE(base.fg);
1247                 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1248                 fg = &truefg;
1249         } else {
1250                 fg = &dc.col[base.fg];
1251         }
1252
1253         if (IS_TRUECOL(base.bg)) {
1254                 colbg.alpha = 0xffff;
1255                 colbg.green = TRUEGREEN(base.bg);
1256                 colbg.red = TRUERED(base.bg);
1257                 colbg.blue = TRUEBLUE(base.bg);
1258                 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1259                 bg = &truebg;
1260         } else {
1261                 bg = &dc.col[base.bg];
1262         }
1263
1264         /* Change basic system colors [0-7] to bright system colors [8-15] */
1265         if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1266                 fg = &dc.col[base.fg + 8];
1267
1268         if (IS_SET(MODE_REVERSE)) {
1269                 if (fg == &dc.col[defaultfg]) {
1270                         fg = &dc.col[defaultbg];
1271                 } else {
1272                         colfg.red = ~fg->color.red;
1273                         colfg.green = ~fg->color.green;
1274                         colfg.blue = ~fg->color.blue;
1275                         colfg.alpha = fg->color.alpha;
1276                         XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1277                                         &revfg);
1278                         fg = &revfg;
1279                 }
1280
1281                 if (bg == &dc.col[defaultbg]) {
1282                         bg = &dc.col[defaultfg];
1283                 } else {
1284                         colbg.red = ~bg->color.red;
1285                         colbg.green = ~bg->color.green;
1286                         colbg.blue = ~bg->color.blue;
1287                         colbg.alpha = bg->color.alpha;
1288                         XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1289                                         &revbg);
1290                         bg = &revbg;
1291                 }
1292         }
1293
1294         if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1295                 colfg.red = fg->color.red / 2;
1296                 colfg.green = fg->color.green / 2;
1297                 colfg.blue = fg->color.blue / 2;
1298                 colfg.alpha = fg->color.alpha;
1299                 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1300                 fg = &revfg;
1301         }
1302
1303
1304         if (base.mode & ATTR_REVERSE) {
1305                 temp = fg;
1306                 fg = bg;
1307                 bg = temp;
1308         }
1309
1310         if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
1311                 fg = bg;
1312
1313         if (base.mode & ATTR_INVISIBLE)
1314                 fg = bg;
1315
1316         /* Intelligent cleaning up of the borders. */
1317         if (x == 0) {
1318                 xclear(0, (y == 0)? 0 : winy, borderpx,
1319                         winy + win.ch + ((y >= term.row-1)? win.h : 0));
1320         }
1321         if (x + charlen >= term.col) {
1322                 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1323                         ((y >= term.row-1)? win.h : (winy + win.ch)));
1324         }
1325         if (y == 0)
1326                 xclear(winx, 0, winx + width, borderpx);
1327         if (y == term.row-1)
1328                 xclear(winx, winy + win.ch, winx + width, win.h);
1329
1330         /* Clean up the region we want to draw to. */
1331         XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1332
1333         /* Set the clip region because Xft is sometimes dirty. */
1334         r.x = 0;
1335         r.y = 0;
1336         r.height = win.ch;
1337         r.width = width;
1338         XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1339
1340         /* Render the glyphs. */
1341         XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1342
1343         /* Render underline and strikethrough. */
1344         if (base.mode & ATTR_UNDERLINE) {
1345                 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
1346                                 width, 1);
1347         }
1348
1349         if (base.mode & ATTR_STRUCK) {
1350                 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
1351                                 width, 1);
1352         }
1353
1354         /* Reset clip to none. */
1355         XftDrawSetClip(xw.draw, 0);
1356 }
1357
1358 void
1359 xdrawglyph(Glyph g, int x, int y)
1360 {
1361         int numspecs;
1362         XftGlyphFontSpec spec;
1363
1364         numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1365         xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1366 }
1367
1368 void
1369 xdrawcursor(void)
1370 {
1371         static int oldx = 0, oldy = 0;
1372         int curx;
1373         Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
1374         int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
1375         Color drawcol;
1376
1377         LIMIT(oldx, 0, term.col-1);
1378         LIMIT(oldy, 0, term.row-1);
1379
1380         curx = term.c.x;
1381
1382         /* adjust position if in dummy */
1383         if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
1384                 oldx--;
1385         if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
1386                 curx--;
1387
1388         /* remove the old cursor */
1389         og = term.line[oldy][oldx];
1390         if (ena_sel && selected(oldx, oldy))
1391                 og.mode ^= ATTR_REVERSE;
1392         xdrawglyph(og, oldx, oldy);
1393
1394         g.u = term.line[term.c.y][term.c.x].u;
1395         g.mode |= term.line[term.c.y][term.c.x].mode &
1396                   (ATTR_BOLD | ATTR_ITALIC | ATTR_UNDERLINE | ATTR_STRUCK);
1397
1398         /*
1399          * Select the right color for the right mode.
1400          */
1401         if (IS_SET(MODE_REVERSE)) {
1402                 g.mode |= ATTR_REVERSE;
1403                 g.bg = defaultfg;
1404                 if (ena_sel && selected(term.c.x, term.c.y)) {
1405                         drawcol = dc.col[defaultcs];
1406                         g.fg = defaultrcs;
1407                 } else {
1408                         drawcol = dc.col[defaultrcs];
1409                         g.fg = defaultcs;
1410                 }
1411         } else {
1412                 if (ena_sel && selected(term.c.x, term.c.y)) {
1413                         drawcol = dc.col[defaultrcs];
1414                         g.fg = defaultfg;
1415                         g.bg = defaultrcs;
1416                 } else {
1417                         drawcol = dc.col[defaultcs];
1418                 }
1419         }
1420
1421         if (IS_SET(MODE_HIDE))
1422                 return;
1423
1424         /* draw the new one */
1425         if (win.state & WIN_FOCUSED) {
1426                 switch (win.cursor) {
1427                 case 7: /* st extension: snowman */
1428                         utf8decode("☃", &g.u, UTF_SIZ);
1429                 case 0: /* Blinking Block */
1430                 case 1: /* Blinking Block (Default) */
1431                 case 2: /* Steady Block */
1432                         g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
1433                         xdrawglyph(g, term.c.x, term.c.y);
1434                         break;
1435                 case 3: /* Blinking Underline */
1436                 case 4: /* Steady Underline */
1437                         XftDrawRect(xw.draw, &drawcol,
1438                                         borderpx + curx * win.cw,
1439                                         borderpx + (term.c.y + 1) * win.ch - \
1440                                                 cursorthickness,
1441                                         win.cw, cursorthickness);
1442                         break;
1443                 case 5: /* Blinking bar */
1444                 case 6: /* Steady bar */
1445                         XftDrawRect(xw.draw, &drawcol,
1446                                         borderpx + curx * win.cw,
1447                                         borderpx + term.c.y * win.ch,
1448                                         cursorthickness, win.ch);
1449                         break;
1450                 }
1451         } else {
1452                 XftDrawRect(xw.draw, &drawcol,
1453                                 borderpx + curx * win.cw,
1454                                 borderpx + term.c.y * win.ch,
1455                                 win.cw - 1, 1);
1456                 XftDrawRect(xw.draw, &drawcol,
1457                                 borderpx + curx * win.cw,
1458                                 borderpx + term.c.y * win.ch,
1459                                 1, win.ch - 1);
1460                 XftDrawRect(xw.draw, &drawcol,
1461                                 borderpx + (curx + 1) * win.cw - 1,
1462                                 borderpx + term.c.y * win.ch,
1463                                 1, win.ch - 1);
1464                 XftDrawRect(xw.draw, &drawcol,
1465                                 borderpx + curx * win.cw,
1466                                 borderpx + (term.c.y + 1) * win.ch - 1,
1467                                 win.cw, 1);
1468         }
1469         oldx = curx, oldy = term.c.y;
1470 }
1471
1472 void
1473 xsetenv(void)
1474 {
1475         char buf[sizeof(long) * 8 + 1];
1476
1477         snprintf(buf, sizeof(buf), "%lu", xw.win);
1478         setenv("WINDOWID", buf, 1);
1479 }
1480
1481 void
1482 xsettitle(char *p)
1483 {
1484         XTextProperty prop;
1485         DEFAULT(p, "st");
1486
1487         Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1488                         &prop);
1489         XSetWMName(xw.dpy, xw.win, &prop);
1490         XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1491         XFree(prop.value);
1492 }
1493
1494 void
1495 draw(void)
1496 {
1497         drawregion(0, 0, term.col, term.row);
1498         XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1499                         win.h, 0, 0);
1500         XSetForeground(xw.dpy, dc.gc,
1501                         dc.col[IS_SET(MODE_REVERSE)?
1502                                 defaultfg : defaultbg].pixel);
1503 }
1504
1505 void
1506 drawregion(int x1, int y1, int x2, int y2)
1507 {
1508         int i, x, y, ox, numspecs;
1509         Glyph base, new;
1510         XftGlyphFontSpec *specs;
1511         int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
1512
1513         if (!(win.state & WIN_VISIBLE))
1514                 return;
1515
1516         for (y = y1; y < y2; y++) {
1517                 if (!term.dirty[y])
1518                         continue;
1519
1520                 term.dirty[y] = 0;
1521
1522                 specs = xw.specbuf;
1523                 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
1524
1525                 i = ox = 0;
1526                 for (x = x1; x < x2 && i < numspecs; x++) {
1527                         new = term.line[y][x];
1528                         if (new.mode == ATTR_WDUMMY)
1529                                 continue;
1530                         if (ena_sel && selected(x, y))
1531                                 new.mode ^= ATTR_REVERSE;
1532                         if (i > 0 && ATTRCMP(base, new)) {
1533                                 xdrawglyphfontspecs(specs, base, i, ox, y);
1534                                 specs += i;
1535                                 numspecs -= i;
1536                                 i = 0;
1537                         }
1538                         if (i == 0) {
1539                                 ox = x;
1540                                 base = new;
1541                         }
1542                         i++;
1543                 }
1544                 if (i > 0)
1545                         xdrawglyphfontspecs(specs, base, i, ox, y);
1546         }
1547         xdrawcursor();
1548 }
1549
1550 void
1551 expose(XEvent *ev)
1552 {
1553         redraw();
1554 }
1555
1556 void
1557 visibility(XEvent *ev)
1558 {
1559         XVisibilityEvent *e = &ev->xvisibility;
1560
1561         MODBIT(win.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
1562 }
1563
1564 void
1565 unmap(XEvent *ev)
1566 {
1567         win.state &= ~WIN_VISIBLE;
1568 }
1569
1570 void
1571 xsetpointermotion(int set)
1572 {
1573         MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1574         XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1575 }
1576
1577 void
1578 xseturgency(int add)
1579 {
1580         XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1581
1582         MODBIT(h->flags, add, XUrgencyHint);
1583         XSetWMHints(xw.dpy, xw.win, h);
1584         XFree(h);
1585 }
1586
1587 void
1588 xbell(void)
1589 {
1590         if (!(win.state & WIN_FOCUSED))
1591                 xseturgency(1);
1592         if (bellvolume)
1593                 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1594 }
1595
1596 void
1597 focus(XEvent *ev)
1598 {
1599         XFocusChangeEvent *e = &ev->xfocus;
1600
1601         if (e->mode == NotifyGrab)
1602                 return;
1603
1604         if (ev->type == FocusIn) {
1605                 XSetICFocus(xw.xic);
1606                 win.state |= WIN_FOCUSED;
1607                 xseturgency(0);
1608                 if (IS_SET(MODE_FOCUS))
1609                         ttywrite("\033[I", 3);
1610         } else {
1611                 XUnsetICFocus(xw.xic);
1612                 win.state &= ~WIN_FOCUSED;
1613                 if (IS_SET(MODE_FOCUS))
1614                         ttywrite("\033[O", 3);
1615         }
1616 }
1617
1618 int
1619 match(uint mask, uint state)
1620 {
1621         return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1622 }
1623
1624 char*
1625 kmap(KeySym k, uint state)
1626 {
1627         Key *kp;
1628         int i;
1629
1630         /* Check for mapped keys out of X11 function keys. */
1631         for (i = 0; i < mappedkeyslen; i++) {
1632                 if (mappedkeys[i] == k)
1633                         break;
1634         }
1635         if (i == mappedkeyslen) {
1636                 if ((k & 0xFFFF) < 0xFD00)
1637                         return NULL;
1638         }
1639
1640         for (kp = key; kp < key + keyslen; kp++) {
1641                 if (kp->k != k)
1642                         continue;
1643
1644                 if (!match(kp->mask, state))
1645                         continue;
1646
1647                 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1648                         continue;
1649                 if (term.numlock && kp->appkey == 2)
1650                         continue;
1651
1652                 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1653                         continue;
1654
1655                 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
1656                         continue;
1657
1658                 return kp->s;
1659         }
1660
1661         return NULL;
1662 }
1663
1664 void
1665 kpress(XEvent *ev)
1666 {
1667         XKeyEvent *e = &ev->xkey;
1668         KeySym ksym;
1669         char buf[32], *customkey;
1670         int len;
1671         Rune c;
1672         Status status;
1673         Shortcut *bp;
1674
1675         if (IS_SET(MODE_KBDLOCK))
1676                 return;
1677
1678         len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
1679         /* 1. shortcuts */
1680         for (bp = shortcuts; bp < shortcuts + shortcutslen; bp++) {
1681                 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1682                         bp->func(&(bp->arg));
1683                         return;
1684                 }
1685         }
1686
1687         /* 2. custom keys from config.h */
1688         if ((customkey = kmap(ksym, e->state))) {
1689                 ttysend(customkey, strlen(customkey));
1690                 return;
1691         }
1692
1693         /* 3. composed string from input method */
1694         if (len == 0)
1695                 return;
1696         if (len == 1 && e->state & Mod1Mask) {
1697                 if (IS_SET(MODE_8BIT)) {
1698                         if (*buf < 0177) {
1699                                 c = *buf | 0x80;
1700                                 len = utf8encode(c, buf);
1701                         }
1702                 } else {
1703                         buf[1] = buf[0];
1704                         buf[0] = '\033';
1705                         len = 2;
1706                 }
1707         }
1708         ttysend(buf, len);
1709 }
1710
1711
1712 void
1713 cmessage(XEvent *e)
1714 {
1715         /*
1716          * See xembed specs
1717          *  http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1718          */
1719         if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1720                 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1721                         win.state |= WIN_FOCUSED;
1722                         xseturgency(0);
1723                 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1724                         win.state &= ~WIN_FOCUSED;
1725                 }
1726         } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1727                 /* Send SIGHUP to shell */
1728                 kill(pid, SIGHUP);
1729                 exit(0);
1730         }
1731 }
1732
1733 void
1734 resize(XEvent *e)
1735 {
1736         if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1737                 return;
1738
1739         cresize(e->xconfigure.width, e->xconfigure.height);
1740         ttyresize(win.tw, win.th);
1741 }
1742
1743 void
1744 run(void)
1745 {
1746         XEvent ev;
1747         int w = win.w, h = win.h;
1748         fd_set rfd;
1749         int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
1750         struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
1751         long deltatime;
1752
1753         /* Waiting for window mapping */
1754         do {
1755                 XNextEvent(xw.dpy, &ev);
1756                 /*
1757                  * This XFilterEvent call is required because of XOpenIM. It
1758                  * does filter out the key event and some client message for
1759                  * the input method too.
1760                  */
1761                 if (XFilterEvent(&ev, None))
1762                         continue;
1763                 if (ev.type == ConfigureNotify) {
1764                         w = ev.xconfigure.width;
1765                         h = ev.xconfigure.height;
1766                 }
1767         } while (ev.type != MapNotify);
1768
1769         cresize(w, h);
1770         ttynew(opt_line, opt_io, opt_cmd);
1771         ttyresize(win.tw, win.th);
1772
1773         clock_gettime(CLOCK_MONOTONIC, &last);
1774         lastblink = last;
1775
1776         for (xev = actionfps;;) {
1777                 FD_ZERO(&rfd);
1778                 FD_SET(cmdfd, &rfd);
1779                 FD_SET(xfd, &rfd);
1780
1781                 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1782                         if (errno == EINTR)
1783                                 continue;
1784                         die("select failed: %s\n", strerror(errno));
1785                 }
1786                 if (FD_ISSET(cmdfd, &rfd)) {
1787                         ttyread();
1788                         if (blinktimeout) {
1789                                 blinkset = tattrset(ATTR_BLINK);
1790                                 if (!blinkset)
1791                                         MODBIT(term.mode, 0, MODE_BLINK);
1792                         }
1793                 }
1794
1795                 if (FD_ISSET(xfd, &rfd))
1796                         xev = actionfps;
1797
1798                 clock_gettime(CLOCK_MONOTONIC, &now);
1799                 drawtimeout.tv_sec = 0;
1800                 drawtimeout.tv_nsec =  (1000 * 1E6)/ xfps;
1801                 tv = &drawtimeout;
1802
1803                 dodraw = 0;
1804                 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
1805                         tsetdirtattr(ATTR_BLINK);
1806                         term.mode ^= MODE_BLINK;
1807                         lastblink = now;
1808                         dodraw = 1;
1809                 }
1810                 deltatime = TIMEDIFF(now, last);
1811                 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
1812                         dodraw = 1;
1813                         last = now;
1814                 }
1815
1816                 if (dodraw) {
1817                         while (XPending(xw.dpy)) {
1818                                 XNextEvent(xw.dpy, &ev);
1819                                 if (XFilterEvent(&ev, None))
1820                                         continue;
1821                                 if (handler[ev.type])
1822                                         (handler[ev.type])(&ev);
1823                         }
1824
1825                         draw();
1826                         XFlush(xw.dpy);
1827
1828                         if (xev && !FD_ISSET(xfd, &rfd))
1829                                 xev--;
1830                         if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
1831                                 if (blinkset) {
1832                                         if (TIMEDIFF(now, lastblink) \
1833                                                         > blinktimeout) {
1834                                                 drawtimeout.tv_nsec = 1000;
1835                                         } else {
1836                                                 drawtimeout.tv_nsec = (1E6 * \
1837                                                         (blinktimeout - \
1838                                                         TIMEDIFF(now,
1839                                                                 lastblink)));
1840                                         }
1841                                         drawtimeout.tv_sec = \
1842                                             drawtimeout.tv_nsec / 1E9;
1843                                         drawtimeout.tv_nsec %= (long)1E9;
1844                                 } else {
1845                                         tv = NULL;
1846                                 }
1847                         }
1848                 }
1849         }
1850 }
1851
1852 void
1853 usage(void)
1854 {
1855         die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
1856             " [-n name] [-o file]\n"
1857             "          [-T title] [-t title] [-w windowid]"
1858             " [[-e] command [args ...]]\n"
1859             "       %s [-aiv] [-c class] [-f font] [-g geometry]"
1860             " [-n name] [-o file]\n"
1861             "          [-T title] [-t title] [-w windowid] -l line"
1862             " [stty_args ...]\n", argv0, argv0);
1863 }
1864
1865 int
1866 main(int argc, char *argv[])
1867 {
1868         xw.l = xw.t = 0;
1869         xw.isfixed = False;
1870         win.cursor = cursorshape;
1871
1872         ARGBEGIN {
1873         case 'a':
1874                 allowaltscreen = 0;
1875                 break;
1876         case 'c':
1877                 opt_class = EARGF(usage());
1878                 break;
1879         case 'e':
1880                 if (argc > 0)
1881                         --argc, ++argv;
1882                 goto run;
1883         case 'f':
1884                 opt_font = EARGF(usage());
1885                 break;
1886         case 'g':
1887                 xw.gm = XParseGeometry(EARGF(usage()),
1888                                 &xw.l, &xw.t, &cols, &rows);
1889                 break;
1890         case 'i':
1891                 xw.isfixed = 1;
1892                 break;
1893         case 'o':
1894                 opt_io = EARGF(usage());
1895                 break;
1896         case 'l':
1897                 opt_line = EARGF(usage());
1898                 break;
1899         case 'n':
1900                 opt_name = EARGF(usage());
1901                 break;
1902         case 't':
1903         case 'T':
1904                 opt_title = EARGF(usage());
1905                 break;
1906         case 'w':
1907                 opt_embed = EARGF(usage());
1908                 break;
1909         case 'v':
1910                 die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
1911                 break;
1912         default:
1913                 usage();
1914         } ARGEND;
1915
1916 run:
1917         if (argc > 0) {
1918                 /* eat all remaining arguments */
1919                 opt_cmd = argv;
1920                 if (!opt_title && !opt_line)
1921                         opt_title = basename(xstrdup(argv[0]));
1922         }
1923         setlocale(LC_CTYPE, "");
1924         XSetLocaleModifiers("");
1925         tnew(MAX(cols, 1), MAX(rows, 1));
1926         xinit();
1927         xsetenv();
1928         selinit();
1929         run();
1930
1931         return 0;
1932 }