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