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[st.git] / x.c
1 /* See LICENSE for license details. */
2 #include <errno.h>
3 #include <math.h>
4 #include <limits.h>
5 #include <locale.h>
6 #include <signal.h>
7 #include <sys/select.h>
8 #include <time.h>
9 #include <unistd.h>
10 #include <libgen.h>
11 #include <X11/Xatom.h>
12 #include <X11/Xlib.h>
13 #include <X11/cursorfont.h>
14 #include <X11/keysym.h>
15 #include <X11/Xft/Xft.h>
16 #include <X11/XKBlib.h>
17
18 static char *argv0;
19 #include "arg.h"
20 #include "st.h"
21 #include "win.h"
22
23 /* types used in config.h */
24 typedef struct {
25 uint mod;
26 KeySym keysym;
27 void (*func)(const Arg *);
28 const Arg arg;
29 } Shortcut;
30
31 typedef struct {
32 uint mod;
33 uint button;
34 void (*func)(const Arg *);
35 const Arg arg;
36 uint release;
37 } MouseShortcut;
38
39 typedef struct {
40 KeySym k;
41 uint mask;
42 char *s;
43 /* three-valued logic variables: 0 indifferent, 1 on, -1 off */
44 signed char appkey; /* application keypad */
45 signed char appcursor; /* application cursor */
46 } Key;
47
48 /* X modifiers */
49 #define XK_ANY_MOD UINT_MAX
50 #define XK_NO_MOD 0
51 #define XK_SWITCH_MOD (1<<13)
52
53 /* function definitions used in config.h */
54 static void clipcopy(const Arg *);
55 static void clippaste(const Arg *);
56 static void numlock(const Arg *);
57 static void selpaste(const Arg *);
58 static void zoom(const Arg *);
59 static void zoomabs(const Arg *);
60 static void zoomreset(const Arg *);
61 static void ttysend(const Arg *);
62
63 /* config.h for applying patches and the configuration. */
64 #include "config.h"
65
66 /* XEMBED messages */
67 #define XEMBED_FOCUS_IN 4
68 #define XEMBED_FOCUS_OUT 5
69
70 /* macros */
71 #define IS_SET(flag) ((win.mode & (flag)) != 0)
72 #define TRUERED(x) (((x) & 0xff0000) >> 8)
73 #define TRUEGREEN(x) (((x) & 0xff00))
74 #define TRUEBLUE(x) (((x) & 0xff) << 8)
75
76 typedef XftDraw *Draw;
77 typedef XftColor Color;
78 typedef XftGlyphFontSpec GlyphFontSpec;
79
80 /* Purely graphic info */
81 typedef struct {
82 int tw, th; /* tty width and height */
83 int w, h; /* window width and height */
84 int ch; /* char height */
85 int cw; /* char width */
86 int mode; /* window state/mode flags */
87 int cursor; /* cursor style */
88 } TermWindow;
89
90 typedef struct {
91 Display *dpy;
92 Colormap cmap;
93 Window win;
94 Drawable buf;
95 GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
96 Atom xembed, wmdeletewin, netwmname, netwmpid;
97 struct {
98 XIM xim;
99 XIC xic;
100 } ime;
101 Draw draw;
102 Visual *vis;
103 XSetWindowAttributes attrs;
104 int scr;
105 int isfixed; /* is fixed geometry? */
106 int l, t; /* left and top offset */
107 int gm; /* geometry mask */
108 } XWindow;
109
110 typedef struct {
111 Atom xtarget;
112 char *primary, *clipboard;
113 struct timespec tclick1;
114 struct timespec tclick2;
115 } XSelection;
116
117 /* Font structure */
118 #define Font Font_
119 typedef struct {
120 int height;
121 int width;
122 int ascent;
123 int descent;
124 int badslant;
125 int badweight;
126 short lbearing;
127 short rbearing;
128 XftFont *match;
129 FcFontSet *set;
130 FcPattern *pattern;
131 } Font;
132
133 /* Drawing Context */
134 typedef struct {
135 Color *col;
136 size_t collen;
137 Font font, bfont, ifont, ibfont;
138 GC gc;
139 } DC;
140
141 static inline ushort sixd_to_16bit(int);
142 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
143 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
144 static void xdrawglyph(Glyph, int, int);
145 static void xclear(int, int, int, int);
146 static int xgeommasktogravity(int);
147 static void ximopen(Display *);
148 static void ximinstantiate(Display *, XPointer, XPointer);
149 static void ximdestroy(XIM, XPointer, XPointer);
150 static void xinit(int, int);
151 static void cresize(int, int);
152 static void xresize(int, int);
153 static void xhints(void);
154 static int xloadcolor(int, const char *, Color *);
155 static int xloadfont(Font *, FcPattern *);
156 static void xloadfonts(char *, double);
157 static void xunloadfont(Font *);
158 static void xunloadfonts(void);
159 static void xsetenv(void);
160 static void xseturgency(int);
161 static int evcol(XEvent *);
162 static int evrow(XEvent *);
163
164 static void expose(XEvent *);
165 static void visibility(XEvent *);
166 static void unmap(XEvent *);
167 static void kpress(XEvent *);
168 static void cmessage(XEvent *);
169 static void resize(XEvent *);
170 static void focus(XEvent *);
171 static int mouseaction(XEvent *, uint);
172 static void brelease(XEvent *);
173 static void bpress(XEvent *);
174 static void bmotion(XEvent *);
175 static void propnotify(XEvent *);
176 static void selnotify(XEvent *);
177 static void selclear_(XEvent *);
178 static void selrequest(XEvent *);
179 static void setsel(char *, Time);
180 static void mousesel(XEvent *, int);
181 static void mousereport(XEvent *);
182 static char *kmap(KeySym, uint);
183 static int match(uint, uint);
184
185 static void run(void);
186 static void usage(void);
187
188 static void (*handler[LASTEvent])(XEvent *) = {
189 [KeyPress] = kpress,
190 [ClientMessage] = cmessage,
191 [ConfigureNotify] = resize,
192 [VisibilityNotify] = visibility,
193 [UnmapNotify] = unmap,
194 [Expose] = expose,
195 [FocusIn] = focus,
196 [FocusOut] = focus,
197 [MotionNotify] = bmotion,
198 [ButtonPress] = bpress,
199 [ButtonRelease] = brelease,
200 /*
201 * Uncomment if you want the selection to disappear when you select something
202 * different in another window.
203 */
204 /* [SelectionClear] = selclear_, */
205 [SelectionNotify] = selnotify,
206 /*
207 * PropertyNotify is only turned on when there is some INCR transfer happening
208 * for the selection retrieval.
209 */
210 [PropertyNotify] = propnotify,
211 [SelectionRequest] = selrequest,
212 };
213
214 /* Globals */
215 static DC dc;
216 static XWindow xw;
217 static XSelection xsel;
218 static TermWindow win;
219
220 /* Font Ring Cache */
221 enum {
222 FRC_NORMAL,
223 FRC_ITALIC,
224 FRC_BOLD,
225 FRC_ITALICBOLD
226 };
227
228 typedef struct {
229 XftFont *font;
230 int flags;
231 Rune unicodep;
232 } Fontcache;
233
234 /* Fontcache is an array now. A new font will be appended to the array. */
235 static Fontcache *frc = NULL;
236 static int frclen = 0;
237 static int frccap = 0;
238 static char *usedfont = NULL;
239 static double usedfontsize = 0;
240 static double defaultfontsize = 0;
241
242 static char *opt_class = NULL;
243 static char **opt_cmd = NULL;
244 static char *opt_embed = NULL;
245 static char *opt_font = NULL;
246 static char *opt_io = NULL;
247 static char *opt_line = NULL;
248 static char *opt_name = NULL;
249 static char *opt_title = NULL;
250
251 static int oldbutton = 3; /* button event on startup: 3 = release */
252
253 void
254 clipcopy(const Arg *dummy)
255 {
256 Atom clipboard;
257
258 free(xsel.clipboard);
259 xsel.clipboard = NULL;
260
261 if (xsel.primary != NULL) {
262 xsel.clipboard = xstrdup(xsel.primary);
263 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
264 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
265 }
266 }
267
268 void
269 clippaste(const Arg *dummy)
270 {
271 Atom clipboard;
272
273 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
274 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
275 xw.win, CurrentTime);
276 }
277
278 void
279 selpaste(const Arg *dummy)
280 {
281 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
282 xw.win, CurrentTime);
283 }
284
285 void
286 numlock(const Arg *dummy)
287 {
288 win.mode ^= MODE_NUMLOCK;
289 }
290
291 void
292 zoom(const Arg *arg)
293 {
294 Arg larg;
295
296 larg.f = usedfontsize + arg->f;
297 zoomabs(&larg);
298 }
299
300 void
301 zoomabs(const Arg *arg)
302 {
303 xunloadfonts();
304 xloadfonts(usedfont, arg->f);
305 cresize(0, 0);
306 redraw();
307 xhints();
308 }
309
310 void
311 zoomreset(const Arg *arg)
312 {
313 Arg larg;
314
315 if (defaultfontsize > 0) {
316 larg.f = defaultfontsize;
317 zoomabs(&larg);
318 }
319 }
320
321 void
322 ttysend(const Arg *arg)
323 {
324 ttywrite(arg->s, strlen(arg->s), 1);
325 }
326
327 int
328 evcol(XEvent *e)
329 {
330 int x = e->xbutton.x - borderpx;
331 LIMIT(x, 0, win.tw - 1);
332 return x / win.cw;
333 }
334
335 int
336 evrow(XEvent *e)
337 {
338 int y = e->xbutton.y - borderpx;
339 LIMIT(y, 0, win.th - 1);
340 return y / win.ch;
341 }
342
343 void
344 mousesel(XEvent *e, int done)
345 {
346 int type, seltype = SEL_REGULAR;
347 uint state = e->xbutton.state & ~(Button1Mask | forcemousemod);
348
349 for (type = 1; type < LEN(selmasks); ++type) {
350 if (match(selmasks[type], state)) {
351 seltype = type;
352 break;
353 }
354 }
355 selextend(evcol(e), evrow(e), seltype, done);
356 if (done)
357 setsel(getsel(), e->xbutton.time);
358 }
359
360 void
361 mousereport(XEvent *e)
362 {
363 int len, x = evcol(e), y = evrow(e),
364 button = e->xbutton.button, state = e->xbutton.state;
365 char buf[40];
366 static int ox, oy;
367
368 /* from urxvt */
369 if (e->xbutton.type == MotionNotify) {
370 if (x == ox && y == oy)
371 return;
372 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
373 return;
374 /* MOUSE_MOTION: no reporting if no button is pressed */
375 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
376 return;
377
378 button = oldbutton + 32;
379 ox = x;
380 oy = y;
381 } else {
382 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
383 button = 3;
384 } else {
385 button -= Button1;
386 if (button >= 3)
387 button += 64 - 3;
388 }
389 if (e->xbutton.type == ButtonPress) {
390 oldbutton = button;
391 ox = x;
392 oy = y;
393 } else if (e->xbutton.type == ButtonRelease) {
394 oldbutton = 3;
395 /* MODE_MOUSEX10: no button release reporting */
396 if (IS_SET(MODE_MOUSEX10))
397 return;
398 if (button == 64 || button == 65)
399 return;
400 }
401 }
402
403 if (!IS_SET(MODE_MOUSEX10)) {
404 button += ((state & ShiftMask ) ? 4 : 0)
405 + ((state & Mod4Mask ) ? 8 : 0)
406 + ((state & ControlMask) ? 16 : 0);
407 }
408
409 if (IS_SET(MODE_MOUSESGR)) {
410 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
411 button, x+1, y+1,
412 e->xbutton.type == ButtonRelease ? 'm' : 'M');
413 } else if (x < 223 && y < 223) {
414 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
415 32+button, 32+x+1, 32+y+1);
416 } else {
417 return;
418 }
419
420 ttywrite(buf, len, 0);
421 }
422
423 int
424 mouseaction(XEvent *e, uint release)
425 {
426 MouseShortcut *ms;
427
428 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
429 if (ms->release == release &&
430 ms->button == e->xbutton.button &&
431 (match(ms->mod, e->xbutton.state) || /* exact or forced */
432 match(ms->mod, e->xbutton.state & ~forcemousemod))) {
433 ms->func(&(ms->arg));
434 return 1;
435 }
436 }
437
438 return 0;
439 }
440
441 void
442 bpress(XEvent *e)
443 {
444 struct timespec now;
445 int snap;
446
447 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
448 mousereport(e);
449 return;
450 }
451
452 if (mouseaction(e, 0))
453 return;
454
455 if (e->xbutton.button == Button1) {
456 /*
457 * If the user clicks below predefined timeouts specific
458 * snapping behaviour is exposed.
459 */
460 clock_gettime(CLOCK_MONOTONIC, &now);
461 if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
462 snap = SNAP_LINE;
463 } else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
464 snap = SNAP_WORD;
465 } else {
466 snap = 0;
467 }
468 xsel.tclick2 = xsel.tclick1;
469 xsel.tclick1 = now;
470
471 selstart(evcol(e), evrow(e), snap);
472 }
473 }
474
475 void
476 propnotify(XEvent *e)
477 {
478 XPropertyEvent *xpev;
479 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
480
481 xpev = &e->xproperty;
482 if (xpev->state == PropertyNewValue &&
483 (xpev->atom == XA_PRIMARY ||
484 xpev->atom == clipboard)) {
485 selnotify(e);
486 }
487 }
488
489 void
490 selnotify(XEvent *e)
491 {
492 ulong nitems, ofs, rem;
493 int format;
494 uchar *data, *last, *repl;
495 Atom type, incratom, property = None;
496
497 incratom = XInternAtom(xw.dpy, "INCR", 0);
498
499 ofs = 0;
500 if (e->type == SelectionNotify)
501 property = e->xselection.property;
502 else if (e->type == PropertyNotify)
503 property = e->xproperty.atom;
504
505 if (property == None)
506 return;
507
508 do {
509 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
510 BUFSIZ/4, False, AnyPropertyType,
511 &type, &format, &nitems, &rem,
512 &data)) {
513 fprintf(stderr, "Clipboard allocation failed\n");
514 return;
515 }
516
517 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
518 /*
519 * If there is some PropertyNotify with no data, then
520 * this is the signal of the selection owner that all
521 * data has been transferred. We won't need to receive
522 * PropertyNotify events anymore.
523 */
524 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
525 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
526 &xw.attrs);
527 }
528
529 if (type == incratom) {
530 /*
531 * Activate the PropertyNotify events so we receive
532 * when the selection owner does send us the next
533 * chunk of data.
534 */
535 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
536 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
537 &xw.attrs);
538
539 /*
540 * Deleting the property is the transfer start signal.
541 */
542 XDeleteProperty(xw.dpy, xw.win, (int)property);
543 continue;
544 }
545
546 /*
547 * As seen in getsel:
548 * Line endings are inconsistent in the terminal and GUI world
549 * copy and pasting. When receiving some selection data,
550 * replace all '\n' with '\r'.
551 * FIXME: Fix the computer world.
552 */
553 repl = data;
554 last = data + nitems * format / 8;
555 while ((repl = memchr(repl, '\n', last - repl))) {
556 *repl++ = '\r';
557 }
558
559 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
560 ttywrite("\033[200~", 6, 0);
561 ttywrite((char *)data, nitems * format / 8, 1);
562 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
563 ttywrite("\033[201~", 6, 0);
564 XFree(data);
565 /* number of 32-bit chunks returned */
566 ofs += nitems * format / 32;
567 } while (rem > 0);
568
569 /*
570 * Deleting the property again tells the selection owner to send the
571 * next data chunk in the property.
572 */
573 XDeleteProperty(xw.dpy, xw.win, (int)property);
574 }
575
576 void
577 xclipcopy(void)
578 {
579 clipcopy(NULL);
580 }
581
582 void
583 selclear_(XEvent *e)
584 {
585 selclear();
586 }
587
588 void
589 selrequest(XEvent *e)
590 {
591 XSelectionRequestEvent *xsre;
592 XSelectionEvent xev;
593 Atom xa_targets, string, clipboard;
594 char *seltext;
595
596 xsre = (XSelectionRequestEvent *) e;
597 xev.type = SelectionNotify;
598 xev.requestor = xsre->requestor;
599 xev.selection = xsre->selection;
600 xev.target = xsre->target;
601 xev.time = xsre->time;
602 if (xsre->property == None)
603 xsre->property = xsre->target;
604
605 /* reject */
606 xev.property = None;
607
608 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
609 if (xsre->target == xa_targets) {
610 /* respond with the supported type */
611 string = xsel.xtarget;
612 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
613 XA_ATOM, 32, PropModeReplace,
614 (uchar *) &string, 1);
615 xev.property = xsre->property;
616 } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
617 /*
618 * xith XA_STRING non ascii characters may be incorrect in the
619 * requestor. It is not our problem, use utf8.
620 */
621 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
622 if (xsre->selection == XA_PRIMARY) {
623 seltext = xsel.primary;
624 } else if (xsre->selection == clipboard) {
625 seltext = xsel.clipboard;
626 } else {
627 fprintf(stderr,
628 "Unhandled clipboard selection 0x%lx\n",
629 xsre->selection);
630 return;
631 }
632 if (seltext != NULL) {
633 XChangeProperty(xsre->display, xsre->requestor,
634 xsre->property, xsre->target,
635 8, PropModeReplace,
636 (uchar *)seltext, strlen(seltext));
637 xev.property = xsre->property;
638 }
639 }
640
641 /* all done, send a notification to the listener */
642 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
643 fprintf(stderr, "Error sending SelectionNotify event\n");
644 }
645
646 void
647 setsel(char *str, Time t)
648 {
649 if (!str)
650 return;
651
652 free(xsel.primary);
653 xsel.primary = str;
654
655 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
656 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
657 selclear();
658 }
659
660 void
661 xsetsel(char *str)
662 {
663 setsel(str, CurrentTime);
664 }
665
666 void
667 brelease(XEvent *e)
668 {
669 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
670 mousereport(e);
671 return;
672 }
673
674 if (mouseaction(e, 1))
675 return;
676 if (e->xbutton.button == Button1)
677 mousesel(e, 1);
678 }
679
680 void
681 bmotion(XEvent *e)
682 {
683 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
684 mousereport(e);
685 return;
686 }
687
688 mousesel(e, 0);
689 }
690
691 void
692 cresize(int width, int height)
693 {
694 int col, row;
695
696 if (width != 0)
697 win.w = width;
698 if (height != 0)
699 win.h = height;
700
701 col = (win.w - 2 * borderpx) / win.cw;
702 row = (win.h - 2 * borderpx) / win.ch;
703 col = MAX(1, col);
704 row = MAX(1, row);
705
706 tresize(col, row);
707 xresize(col, row);
708 ttyresize(win.tw, win.th);
709 }
710
711 void
712 xresize(int col, int row)
713 {
714 win.tw = col * win.cw;
715 win.th = row * win.ch;
716
717 XFreePixmap(xw.dpy, xw.buf);
718 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
719 DefaultDepth(xw.dpy, xw.scr));
720 XftDrawChange(xw.draw, xw.buf);
721 xclear(0, 0, win.w, win.h);
722
723 /* resize to new width */
724 xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
725 }
726
727 ushort
728 sixd_to_16bit(int x)
729 {
730 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
731 }
732
733 int
734 xloadcolor(int i, const char *name, Color *ncolor)
735 {
736 XRenderColor color = { .alpha = 0xffff };
737
738 if (!name) {
739 if (BETWEEN(i, 16, 255)) { /* 256 color */
740 if (i < 6*6*6+16) { /* same colors as xterm */
741 color.red = sixd_to_16bit( ((i-16)/36)%6 );
742 color.green = sixd_to_16bit( ((i-16)/6) %6 );
743 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
744 } else { /* greyscale */
745 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
746 color.green = color.blue = color.red;
747 }
748 return XftColorAllocValue(xw.dpy, xw.vis,
749 xw.cmap, &color, ncolor);
750 } else
751 name = colorname[i];
752 }
753
754 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
755 }
756
757 void
758 xloadcols(void)
759 {
760 int i;
761 static int loaded;
762 Color *cp;
763
764 if (loaded) {
765 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
766 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
767 } else {
768 dc.collen = MAX(LEN(colorname), 256);
769 dc.col = xmalloc(dc.collen * sizeof(Color));
770 }
771
772 for (i = 0; i < dc.collen; i++)
773 if (!xloadcolor(i, NULL, &dc.col[i])) {
774 if (colorname[i])
775 die("could not allocate color '%s'\n", colorname[i]);
776 else
777 die("could not allocate color %d\n", i);
778 }
779 loaded = 1;
780 }
781
782 int
783 xsetcolorname(int x, const char *name)
784 {
785 Color ncolor;
786
787 if (!BETWEEN(x, 0, dc.collen))
788 return 1;
789
790 if (!xloadcolor(x, name, &ncolor))
791 return 1;
792
793 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
794 dc.col[x] = ncolor;
795
796 return 0;
797 }
798
799 /*
800 * Absolute coordinates.
801 */
802 void
803 xclear(int x1, int y1, int x2, int y2)
804 {
805 XftDrawRect(xw.draw,
806 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
807 x1, y1, x2-x1, y2-y1);
808 }
809
810 void
811 xhints(void)
812 {
813 XClassHint class = {opt_name ? opt_name : termname,
814 opt_class ? opt_class : termname};
815 XWMHints wm = {.flags = InputHint, .input = 1};
816 XSizeHints *sizeh;
817
818 sizeh = XAllocSizeHints();
819
820 sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
821 sizeh->height = win.h;
822 sizeh->width = win.w;
823 sizeh->height_inc = win.ch;
824 sizeh->width_inc = win.cw;
825 sizeh->base_height = 2 * borderpx;
826 sizeh->base_width = 2 * borderpx;
827 sizeh->min_height = win.ch + 2 * borderpx;
828 sizeh->min_width = win.cw + 2 * borderpx;
829 if (xw.isfixed) {
830 sizeh->flags |= PMaxSize;
831 sizeh->min_width = sizeh->max_width = win.w;
832 sizeh->min_height = sizeh->max_height = win.h;
833 }
834 if (xw.gm & (XValue|YValue)) {
835 sizeh->flags |= USPosition | PWinGravity;
836 sizeh->x = xw.l;
837 sizeh->y = xw.t;
838 sizeh->win_gravity = xgeommasktogravity(xw.gm);
839 }
840
841 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
842 &class);
843 XFree(sizeh);
844 }
845
846 int
847 xgeommasktogravity(int mask)
848 {
849 switch (mask & (XNegative|YNegative)) {
850 case 0:
851 return NorthWestGravity;
852 case XNegative:
853 return NorthEastGravity;
854 case YNegative:
855 return SouthWestGravity;
856 }
857
858 return SouthEastGravity;
859 }
860
861 int
862 xloadfont(Font *f, FcPattern *pattern)
863 {
864 FcPattern *configured;
865 FcPattern *match;
866 FcResult result;
867 XGlyphInfo extents;
868 int wantattr, haveattr;
869
870 /*
871 * Manually configure instead of calling XftMatchFont
872 * so that we can use the configured pattern for
873 * "missing glyph" lookups.
874 */
875 configured = FcPatternDuplicate(pattern);
876 if (!configured)
877 return 1;
878
879 FcConfigSubstitute(NULL, configured, FcMatchPattern);
880 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
881
882 match = FcFontMatch(NULL, configured, &result);
883 if (!match) {
884 FcPatternDestroy(configured);
885 return 1;
886 }
887
888 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
889 FcPatternDestroy(configured);
890 FcPatternDestroy(match);
891 return 1;
892 }
893
894 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
895 XftResultMatch)) {
896 /*
897 * Check if xft was unable to find a font with the appropriate
898 * slant but gave us one anyway. Try to mitigate.
899 */
900 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
901 &haveattr) != XftResultMatch) || haveattr < wantattr) {
902 f->badslant = 1;
903 fputs("font slant does not match\n", stderr);
904 }
905 }
906
907 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
908 XftResultMatch)) {
909 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
910 &haveattr) != XftResultMatch) || haveattr != wantattr) {
911 f->badweight = 1;
912 fputs("font weight does not match\n", stderr);
913 }
914 }
915
916 XftTextExtentsUtf8(xw.dpy, f->match,
917 (const FcChar8 *) ascii_printable,
918 strlen(ascii_printable), &extents);
919
920 f->set = NULL;
921 f->pattern = configured;
922
923 f->ascent = f->match->ascent;
924 f->descent = f->match->descent;
925 f->lbearing = 0;
926 f->rbearing = f->match->max_advance_width;
927
928 f->height = f->ascent + f->descent;
929 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
930
931 return 0;
932 }
933
934 void
935 xloadfonts(char *fontstr, double fontsize)
936 {
937 FcPattern *pattern;
938 double fontval;
939
940 if (fontstr[0] == '-')
941 pattern = XftXlfdParse(fontstr, False, False);
942 else
943 pattern = FcNameParse((FcChar8 *)fontstr);
944
945 if (!pattern)
946 die("can't open font %s\n", fontstr);
947
948 if (fontsize > 1) {
949 FcPatternDel(pattern, FC_PIXEL_SIZE);
950 FcPatternDel(pattern, FC_SIZE);
951 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
952 usedfontsize = fontsize;
953 } else {
954 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
955 FcResultMatch) {
956 usedfontsize = fontval;
957 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
958 FcResultMatch) {
959 usedfontsize = -1;
960 } else {
961 /*
962 * Default font size is 12, if none given. This is to
963 * have a known usedfontsize value.
964 */
965 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
966 usedfontsize = 12;
967 }
968 defaultfontsize = usedfontsize;
969 }
970
971 if (xloadfont(&dc.font, pattern))
972 die("can't open font %s\n", fontstr);
973
974 if (usedfontsize < 0) {
975 FcPatternGetDouble(dc.font.match->pattern,
976 FC_PIXEL_SIZE, 0, &fontval);
977 usedfontsize = fontval;
978 if (fontsize == 0)
979 defaultfontsize = fontval;
980 }
981
982 /* Setting character width and height. */
983 win.cw = ceilf(dc.font.width * cwscale);
984 win.ch = ceilf(dc.font.height * chscale);
985
986 FcPatternDel(pattern, FC_SLANT);
987 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
988 if (xloadfont(&dc.ifont, pattern))
989 die("can't open font %s\n", fontstr);
990
991 FcPatternDel(pattern, FC_WEIGHT);
992 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
993 if (xloadfont(&dc.ibfont, pattern))
994 die("can't open font %s\n", fontstr);
995
996 FcPatternDel(pattern, FC_SLANT);
997 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
998 if (xloadfont(&dc.bfont, pattern))
999 die("can't open font %s\n", fontstr);
1000
1001 FcPatternDestroy(pattern);
1002 }
1003
1004 void
1005 xunloadfont(Font *f)
1006 {
1007 XftFontClose(xw.dpy, f->match);
1008 FcPatternDestroy(f->pattern);
1009 if (f->set)
1010 FcFontSetDestroy(f->set);
1011 }
1012
1013 void
1014 xunloadfonts(void)
1015 {
1016 /* Free the loaded fonts in the font cache. */
1017 while (frclen > 0)
1018 XftFontClose(xw.dpy, frc[--frclen].font);
1019
1020 xunloadfont(&dc.font);
1021 xunloadfont(&dc.bfont);
1022 xunloadfont(&dc.ifont);
1023 xunloadfont(&dc.ibfont);
1024 }
1025
1026 void
1027 ximopen(Display *dpy)
1028 {
1029 XIMCallback destroy = { .client_data = NULL, .callback = ximdestroy };
1030
1031 if ((xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1032 XSetLocaleModifiers("@im=local");
1033 if ((xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1034 XSetLocaleModifiers("@im=");
1035 if ((xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL)
1036 die("XOpenIM failed. Could not open input device.\n");
1037 }
1038 }
1039 if (XSetIMValues(xw.ime.xim, XNDestroyCallback, &destroy, NULL) != NULL)
1040 die("XSetIMValues failed. Could not set input method value.\n");
1041 xw.xic = XCreateIC(xw.ime.xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
1042 XNClientWindow, xw.win, XNFocusWindow, xw.win, NULL);
1043 if (xw.xic == NULL)
1044 die("XCreateIC failed. Could not obtain input method.\n");
1045 }
1046
1047 void
1048 ximinstantiate(Display *dpy, XPointer client, XPointer call)
1049 {
1050 ximopen(dpy);
1051 XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1052 ximinstantiate, NULL);
1053 }
1054
1055 void
1056 ximdestroy(XIM xim, XPointer client, XPointer call)
1057 {
1058 xw.ime.xim = NULL;
1059 XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1060 ximinstantiate, NULL);
1061 }
1062
1063 void
1064 xinit(int cols, int rows)
1065 {
1066 XGCValues gcvalues;
1067 Cursor cursor;
1068 Window parent;
1069 pid_t thispid = getpid();
1070 XColor xmousefg, xmousebg;
1071
1072 if (!(xw.dpy = XOpenDisplay(NULL)))
1073 die("can't open display\n");
1074 xw.scr = XDefaultScreen(xw.dpy);
1075 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
1076
1077 /* font */
1078 if (!FcInit())
1079 die("could not init fontconfig.\n");
1080
1081 usedfont = (opt_font == NULL)? font : opt_font;
1082 xloadfonts(usedfont, 0);
1083
1084 /* colors */
1085 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1086 xloadcols();
1087
1088 /* adjust fixed window geometry */
1089 win.w = 2 * borderpx + cols * win.cw;
1090 win.h = 2 * borderpx + rows * win.ch;
1091 if (xw.gm & XNegative)
1092 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
1093 if (xw.gm & YNegative)
1094 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
1095
1096 /* Events */
1097 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
1098 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
1099 xw.attrs.bit_gravity = NorthWestGravity;
1100 xw.attrs.event_mask = FocusChangeMask | KeyPressMask | KeyReleaseMask
1101 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1102 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
1103 xw.attrs.colormap = xw.cmap;
1104
1105 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
1106 parent = XRootWindow(xw.dpy, xw.scr);
1107 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
1108 win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1109 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
1110 | CWEventMask | CWColormap, &xw.attrs);
1111
1112 memset(&gcvalues, 0, sizeof(gcvalues));
1113 gcvalues.graphics_exposures = False;
1114 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
1115 &gcvalues);
1116 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
1117 DefaultDepth(xw.dpy, xw.scr));
1118 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
1119 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
1120
1121 /* font spec buffer */
1122 xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
1123
1124 /* Xft rendering context */
1125 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
1126
1127 /* input methods */
1128 ximopen(xw.dpy);
1129
1130 /* white cursor, black outline */
1131 cursor = XCreateFontCursor(xw.dpy, mouseshape);
1132 XDefineCursor(xw.dpy, xw.win, cursor);
1133
1134 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
1135 xmousefg.red = 0xffff;
1136 xmousefg.green = 0xffff;
1137 xmousefg.blue = 0xffff;
1138 }
1139
1140 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
1141 xmousebg.red = 0x0000;
1142 xmousebg.green = 0x0000;
1143 xmousebg.blue = 0x0000;
1144 }
1145
1146 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
1147
1148 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1149 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
1150 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
1151 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
1152
1153 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
1154 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
1155 PropModeReplace, (uchar *)&thispid, 1);
1156
1157 win.mode = MODE_NUMLOCK;
1158 resettitle();
1159 xhints();
1160 XMapWindow(xw.dpy, xw.win);
1161 XSync(xw.dpy, False);
1162
1163 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
1164 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
1165 xsel.primary = NULL;
1166 xsel.clipboard = NULL;
1167 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
1168 if (xsel.xtarget == None)
1169 xsel.xtarget = XA_STRING;
1170 }
1171
1172 int
1173 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
1174 {
1175 float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
1176 ushort mode, prevmode = USHRT_MAX;
1177 Font *font = &dc.font;
1178 int frcflags = FRC_NORMAL;
1179 float runewidth = win.cw;
1180 Rune rune;
1181 FT_UInt glyphidx;
1182 FcResult fcres;
1183 FcPattern *fcpattern, *fontpattern;
1184 FcFontSet *fcsets[] = { NULL };
1185 FcCharSet *fccharset;
1186 int i, f, numspecs = 0;
1187
1188 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1189 /* Fetch rune and mode for current glyph. */
1190 rune = glyphs[i].u;
1191 mode = glyphs[i].mode;
1192
1193 /* Skip dummy wide-character spacing. */
1194 if (mode == ATTR_WDUMMY)
1195 continue;
1196
1197 /* Determine font for glyph if different from previous glyph. */
1198 if (prevmode != mode) {
1199 prevmode = mode;
1200 font = &dc.font;
1201 frcflags = FRC_NORMAL;
1202 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1203 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1204 font = &dc.ibfont;
1205 frcflags = FRC_ITALICBOLD;
1206 } else if (mode & ATTR_ITALIC) {
1207 font = &dc.ifont;
1208 frcflags = FRC_ITALIC;
1209 } else if (mode & ATTR_BOLD) {
1210 font = &dc.bfont;
1211 frcflags = FRC_BOLD;
1212 }
1213 yp = winy + font->ascent;
1214 }
1215
1216 /* Lookup character index with default font. */
1217 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1218 if (glyphidx) {
1219 specs[numspecs].font = font->match;
1220 specs[numspecs].glyph = glyphidx;
1221 specs[numspecs].x = (short)xp;
1222 specs[numspecs].y = (short)yp;
1223 xp += runewidth;
1224 numspecs++;
1225 continue;
1226 }
1227
1228 /* Fallback on font cache, search the font cache for match. */
1229 for (f = 0; f < frclen; f++) {
1230 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1231 /* Everything correct. */
1232 if (glyphidx && frc[f].flags == frcflags)
1233 break;
1234 /* We got a default font for a not found glyph. */
1235 if (!glyphidx && frc[f].flags == frcflags
1236 && frc[f].unicodep == rune) {
1237 break;
1238 }
1239 }
1240
1241 /* Nothing was found. Use fontconfig to find matching font. */
1242 if (f >= frclen) {
1243 if (!font->set)
1244 font->set = FcFontSort(0, font->pattern,
1245 1, 0, &fcres);
1246 fcsets[0] = font->set;
1247
1248 /*
1249 * Nothing was found in the cache. Now use
1250 * some dozen of Fontconfig calls to get the
1251 * font for one single character.
1252 *
1253 * Xft and fontconfig are design failures.
1254 */
1255 fcpattern = FcPatternDuplicate(font->pattern);
1256 fccharset = FcCharSetCreate();
1257
1258 FcCharSetAddChar(fccharset, rune);
1259 FcPatternAddCharSet(fcpattern, FC_CHARSET,
1260 fccharset);
1261 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1262
1263 FcConfigSubstitute(0, fcpattern,
1264 FcMatchPattern);
1265 FcDefaultSubstitute(fcpattern);
1266
1267 fontpattern = FcFontSetMatch(0, fcsets, 1,
1268 fcpattern, &fcres);
1269
1270 /* Allocate memory for the new cache entry. */
1271 if (frclen >= frccap) {
1272 frccap += 16;
1273 frc = xrealloc(frc, frccap * sizeof(Fontcache));
1274 }
1275
1276 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1277 fontpattern);
1278 if (!frc[frclen].font)
1279 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1280 strerror(errno));
1281 frc[frclen].flags = frcflags;
1282 frc[frclen].unicodep = rune;
1283
1284 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1285
1286 f = frclen;
1287 frclen++;
1288
1289 FcPatternDestroy(fcpattern);
1290 FcCharSetDestroy(fccharset);
1291 }
1292
1293 specs[numspecs].font = frc[f].font;
1294 specs[numspecs].glyph = glyphidx;
1295 specs[numspecs].x = (short)xp;
1296 specs[numspecs].y = (short)yp;
1297 xp += runewidth;
1298 numspecs++;
1299 }
1300
1301 return numspecs;
1302 }
1303
1304 void
1305 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1306 {
1307 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1308 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1309 width = charlen * win.cw;
1310 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1311 XRenderColor colfg, colbg;
1312 XRectangle r;
1313
1314 /* Fallback on color display for attributes not supported by the font */
1315 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1316 if (dc.ibfont.badslant || dc.ibfont.badweight)
1317 base.fg = defaultattr;
1318 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1319 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1320 base.fg = defaultattr;
1321 }
1322
1323 if (IS_TRUECOL(base.fg)) {
1324 colfg.alpha = 0xffff;
1325 colfg.red = TRUERED(base.fg);
1326 colfg.green = TRUEGREEN(base.fg);
1327 colfg.blue = TRUEBLUE(base.fg);
1328 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1329 fg = &truefg;
1330 } else {
1331 fg = &dc.col[base.fg];
1332 }
1333
1334 if (IS_TRUECOL(base.bg)) {
1335 colbg.alpha = 0xffff;
1336 colbg.green = TRUEGREEN(base.bg);
1337 colbg.red = TRUERED(base.bg);
1338 colbg.blue = TRUEBLUE(base.bg);
1339 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1340 bg = &truebg;
1341 } else {
1342 bg = &dc.col[base.bg];
1343 }
1344
1345 /* Change basic system colors [0-7] to bright system colors [8-15] */
1346 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1347 fg = &dc.col[base.fg + 8];
1348
1349 if (IS_SET(MODE_REVERSE)) {
1350 if (fg == &dc.col[defaultfg]) {
1351 fg = &dc.col[defaultbg];
1352 } else {
1353 colfg.red = ~fg->color.red;
1354 colfg.green = ~fg->color.green;
1355 colfg.blue = ~fg->color.blue;
1356 colfg.alpha = fg->color.alpha;
1357 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1358 &revfg);
1359 fg = &revfg;
1360 }
1361
1362 if (bg == &dc.col[defaultbg]) {
1363 bg = &dc.col[defaultfg];
1364 } else {
1365 colbg.red = ~bg->color.red;
1366 colbg.green = ~bg->color.green;
1367 colbg.blue = ~bg->color.blue;
1368 colbg.alpha = bg->color.alpha;
1369 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1370 &revbg);
1371 bg = &revbg;
1372 }
1373 }
1374
1375 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1376 colfg.red = fg->color.red / 2;
1377 colfg.green = fg->color.green / 2;
1378 colfg.blue = fg->color.blue / 2;
1379 colfg.alpha = fg->color.alpha;
1380 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1381 fg = &revfg;
1382 }
1383
1384 if (base.mode & ATTR_REVERSE) {
1385 temp = fg;
1386 fg = bg;
1387 bg = temp;
1388 }
1389
1390 if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
1391 fg = bg;
1392
1393 if (base.mode & ATTR_INVISIBLE)
1394 fg = bg;
1395
1396 /* Intelligent cleaning up of the borders. */
1397 if (x == 0) {
1398 xclear(0, (y == 0)? 0 : winy, borderpx,
1399 winy + win.ch +
1400 ((winy + win.ch >= borderpx + win.th)? win.h : 0));
1401 }
1402 if (winx + width >= borderpx + win.tw) {
1403 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1404 ((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
1405 }
1406 if (y == 0)
1407 xclear(winx, 0, winx + width, borderpx);
1408 if (winy + win.ch >= borderpx + win.th)
1409 xclear(winx, winy + win.ch, winx + width, win.h);
1410
1411 /* Clean up the region we want to draw to. */
1412 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1413
1414 /* Set the clip region because Xft is sometimes dirty. */
1415 r.x = 0;
1416 r.y = 0;
1417 r.height = win.ch;
1418 r.width = width;
1419 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1420
1421 /* Render the glyphs. */
1422 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1423
1424 /* Render underline and strikethrough. */
1425 if (base.mode & ATTR_UNDERLINE) {
1426 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
1427 width, 1);
1428 }
1429
1430 if (base.mode & ATTR_STRUCK) {
1431 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
1432 width, 1);
1433 }
1434
1435 /* Reset clip to none. */
1436 XftDrawSetClip(xw.draw, 0);
1437 }
1438
1439 void
1440 xdrawglyph(Glyph g, int x, int y)
1441 {
1442 int numspecs;
1443 XftGlyphFontSpec spec;
1444
1445 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1446 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1447 }
1448
1449 void
1450 xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
1451 {
1452 Color drawcol;
1453
1454 /* remove the old cursor */
1455 if (selected(ox, oy))
1456 og.mode ^= ATTR_REVERSE;
1457 xdrawglyph(og, ox, oy);
1458
1459 if (IS_SET(MODE_HIDE))
1460 return;
1461
1462 /*
1463 * Select the right color for the right mode.
1464 */
1465 g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
1466
1467 if (IS_SET(MODE_REVERSE)) {
1468 g.mode |= ATTR_REVERSE;
1469 g.bg = defaultfg;
1470 if (selected(cx, cy)) {
1471 drawcol = dc.col[defaultcs];
1472 g.fg = defaultrcs;
1473 } else {
1474 drawcol = dc.col[defaultrcs];
1475 g.fg = defaultcs;
1476 }
1477 } else {
1478 if (selected(cx, cy)) {
1479 g.fg = defaultfg;
1480 g.bg = defaultrcs;
1481 } else {
1482 g.fg = defaultbg;
1483 g.bg = defaultcs;
1484 }
1485 drawcol = dc.col[g.bg];
1486 }
1487
1488 /* draw the new one */
1489 if (IS_SET(MODE_FOCUSED)) {
1490 switch (win.cursor) {
1491 case 7: /* st extension: snowman (U+2603) */
1492 g.u = 0x2603;
1493 case 0: /* Blinking Block */
1494 case 1: /* Blinking Block (Default) */
1495 case 2: /* Steady Block */
1496 xdrawglyph(g, cx, cy);
1497 break;
1498 case 3: /* Blinking Underline */
1499 case 4: /* Steady Underline */
1500 XftDrawRect(xw.draw, &drawcol,
1501 borderpx + cx * win.cw,
1502 borderpx + (cy + 1) * win.ch - \
1503 cursorthickness,
1504 win.cw, cursorthickness);
1505 break;
1506 case 5: /* Blinking bar */
1507 case 6: /* Steady bar */
1508 XftDrawRect(xw.draw, &drawcol,
1509 borderpx + cx * win.cw,
1510 borderpx + cy * win.ch,
1511 cursorthickness, win.ch);
1512 break;
1513 }
1514 } else {
1515 XftDrawRect(xw.draw, &drawcol,
1516 borderpx + cx * win.cw,
1517 borderpx + cy * win.ch,
1518 win.cw - 1, 1);
1519 XftDrawRect(xw.draw, &drawcol,
1520 borderpx + cx * win.cw,
1521 borderpx + cy * win.ch,
1522 1, win.ch - 1);
1523 XftDrawRect(xw.draw, &drawcol,
1524 borderpx + (cx + 1) * win.cw - 1,
1525 borderpx + cy * win.ch,
1526 1, win.ch - 1);
1527 XftDrawRect(xw.draw, &drawcol,
1528 borderpx + cx * win.cw,
1529 borderpx + (cy + 1) * win.ch - 1,
1530 win.cw, 1);
1531 }
1532 }
1533
1534 void
1535 xsetenv(void)
1536 {
1537 char buf[sizeof(long) * 8 + 1];
1538
1539 snprintf(buf, sizeof(buf), "%lu", xw.win);
1540 setenv("WINDOWID", buf, 1);
1541 }
1542
1543 void
1544 xsettitle(char *p)
1545 {
1546 XTextProperty prop;
1547 DEFAULT(p, opt_title);
1548
1549 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1550 &prop);
1551 XSetWMName(xw.dpy, xw.win, &prop);
1552 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1553 XFree(prop.value);
1554 }
1555
1556 int
1557 xstartdraw(void)
1558 {
1559 return IS_SET(MODE_VISIBLE);
1560 }
1561
1562 void
1563 xdrawline(Line line, int x1, int y1, int x2)
1564 {
1565 int i, x, ox, numspecs;
1566 Glyph base, new;
1567 XftGlyphFontSpec *specs = xw.specbuf;
1568
1569 numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
1570 i = ox = 0;
1571 for (x = x1; x < x2 && i < numspecs; x++) {
1572 new = line[x];
1573 if (new.mode == ATTR_WDUMMY)
1574 continue;
1575 if (selected(x, y1))
1576 new.mode ^= ATTR_REVERSE;
1577 if (i > 0 && ATTRCMP(base, new)) {
1578 xdrawglyphfontspecs(specs, base, i, ox, y1);
1579 specs += i;
1580 numspecs -= i;
1581 i = 0;
1582 }
1583 if (i == 0) {
1584 ox = x;
1585 base = new;
1586 }
1587 i++;
1588 }
1589 if (i > 0)
1590 xdrawglyphfontspecs(specs, base, i, ox, y1);
1591 }
1592
1593 void
1594 xfinishdraw(void)
1595 {
1596 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1597 win.h, 0, 0);
1598 XSetForeground(xw.dpy, dc.gc,
1599 dc.col[IS_SET(MODE_REVERSE)?
1600 defaultfg : defaultbg].pixel);
1601 }
1602
1603 void
1604 xximspot(int x, int y)
1605 {
1606 XPoint spot = { borderpx + x * win.cw, borderpx + (y + 1) * win.ch };
1607 XVaNestedList attr = XVaCreateNestedList(0, XNSpotLocation, &spot, NULL);
1608
1609 XSetICValues(xw.xic, XNPreeditAttributes, attr, NULL);
1610 XFree(attr);
1611 }
1612
1613 void
1614 expose(XEvent *ev)
1615 {
1616 redraw();
1617 }
1618
1619 void
1620 visibility(XEvent *ev)
1621 {
1622 XVisibilityEvent *e = &ev->xvisibility;
1623
1624 MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
1625 }
1626
1627 void
1628 unmap(XEvent *ev)
1629 {
1630 win.mode &= ~MODE_VISIBLE;
1631 }
1632
1633 void
1634 xsetpointermotion(int set)
1635 {
1636 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1637 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1638 }
1639
1640 void
1641 xsetmode(int set, unsigned int flags)
1642 {
1643 int mode = win.mode;
1644 MODBIT(win.mode, set, flags);
1645 if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
1646 redraw();
1647 }
1648
1649 int
1650 xsetcursor(int cursor)
1651 {
1652 DEFAULT(cursor, 1);
1653 if (!BETWEEN(cursor, 0, 6))
1654 return 1;
1655 win.cursor = cursor;
1656 return 0;
1657 }
1658
1659 void
1660 xseturgency(int add)
1661 {
1662 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1663
1664 MODBIT(h->flags, add, XUrgencyHint);
1665 XSetWMHints(xw.dpy, xw.win, h);
1666 XFree(h);
1667 }
1668
1669 void
1670 xbell(void)
1671 {
1672 if (!(IS_SET(MODE_FOCUSED)))
1673 xseturgency(1);
1674 if (bellvolume)
1675 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1676 }
1677
1678 void
1679 focus(XEvent *ev)
1680 {
1681 XFocusChangeEvent *e = &ev->xfocus;
1682
1683 if (e->mode == NotifyGrab)
1684 return;
1685
1686 if (ev->type == FocusIn) {
1687 XSetICFocus(xw.ime.xic);
1688 win.mode |= MODE_FOCUSED;
1689 xseturgency(0);
1690 if (IS_SET(MODE_FOCUS))
1691 ttywrite("\033[I", 3, 0);
1692 } else {
1693 XUnsetICFocus(xw.ime.xic);
1694 win.mode &= ~MODE_FOCUSED;
1695 if (IS_SET(MODE_FOCUS))
1696 ttywrite("\033[O", 3, 0);
1697 }
1698 }
1699
1700 int
1701 match(uint mask, uint state)
1702 {
1703 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1704 }
1705
1706 char*
1707 kmap(KeySym k, uint state)
1708 {
1709 Key *kp;
1710 int i;
1711
1712 /* Check for mapped keys out of X11 function keys. */
1713 for (i = 0; i < LEN(mappedkeys); i++) {
1714 if (mappedkeys[i] == k)
1715 break;
1716 }
1717 if (i == LEN(mappedkeys)) {
1718 if ((k & 0xFFFF) < 0xFD00)
1719 return NULL;
1720 }
1721
1722 for (kp = key; kp < key + LEN(key); kp++) {
1723 if (kp->k != k)
1724 continue;
1725
1726 if (!match(kp->mask, state))
1727 continue;
1728
1729 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1730 continue;
1731 if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
1732 continue;
1733
1734 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1735 continue;
1736
1737 return kp->s;
1738 }
1739
1740 return NULL;
1741 }
1742
1743 void
1744 kpress(XEvent *ev)
1745 {
1746 XKeyEvent *e = &ev->xkey;
1747 KeySym ksym;
1748 char buf[64], *customkey;
1749 int len;
1750 Rune c;
1751 Status status;
1752 Shortcut *bp;
1753
1754 if (IS_SET(MODE_KBDLOCK))
1755 return;
1756
1757 len = XmbLookupString(xw.ime.xic, e, buf, sizeof buf, &ksym, &status);
1758 /* 1. shortcuts */
1759 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
1760 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1761 bp->func(&(bp->arg));
1762 return;
1763 }
1764 }
1765
1766 /* 2. custom keys from config.h */
1767 if ((customkey = kmap(ksym, e->state))) {
1768 ttywrite(customkey, strlen(customkey), 1);
1769 return;
1770 }
1771
1772 /* 3. composed string from input method */
1773 if (len == 0)
1774 return;
1775 if (len == 1 && e->state & Mod1Mask) {
1776 if (IS_SET(MODE_8BIT)) {
1777 if (*buf < 0177) {
1778 c = *buf | 0x80;
1779 len = utf8encode(c, buf);
1780 }
1781 } else {
1782 buf[1] = buf[0];
1783 buf[0] = '\033';
1784 len = 2;
1785 }
1786 }
1787 ttywrite(buf, len, 1);
1788 }
1789
1790 void
1791 cmessage(XEvent *e)
1792 {
1793 /*
1794 * See xembed specs
1795 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1796 */
1797 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1798 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1799 win.mode |= MODE_FOCUSED;
1800 xseturgency(0);
1801 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1802 win.mode &= ~MODE_FOCUSED;
1803 }
1804 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1805 ttyhangup();
1806 exit(0);
1807 }
1808 }
1809
1810 void
1811 resize(XEvent *e)
1812 {
1813 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1814 return;
1815
1816 cresize(e->xconfigure.width, e->xconfigure.height);
1817 }
1818
1819 void
1820 run(void)
1821 {
1822 XEvent ev;
1823 int w = win.w, h = win.h;
1824 fd_set rfd;
1825 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
1826 int ttyfd;
1827 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
1828 long deltatime;
1829
1830 /* Waiting for window mapping */
1831 do {
1832 XNextEvent(xw.dpy, &ev);
1833 /*
1834 * This XFilterEvent call is required because of XOpenIM. It
1835 * does filter out the key event and some client message for
1836 * the input method too.
1837 */
1838 if (XFilterEvent(&ev, None))
1839 continue;
1840 if (ev.type == ConfigureNotify) {
1841 w = ev.xconfigure.width;
1842 h = ev.xconfigure.height;
1843 }
1844 } while (ev.type != MapNotify);
1845
1846 ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
1847 cresize(w, h);
1848
1849 clock_gettime(CLOCK_MONOTONIC, &last);
1850 lastblink = last;
1851
1852 for (xev = actionfps;;) {
1853 FD_ZERO(&rfd);
1854 FD_SET(ttyfd, &rfd);
1855 FD_SET(xfd, &rfd);
1856
1857 if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1858 if (errno == EINTR)
1859 continue;
1860 die("select failed: %s\n", strerror(errno));
1861 }
1862 if (FD_ISSET(ttyfd, &rfd)) {
1863 ttyread();
1864 if (blinktimeout) {
1865 blinkset = tattrset(ATTR_BLINK);
1866 if (!blinkset)
1867 MODBIT(win.mode, 0, MODE_BLINK);
1868 }
1869 }
1870
1871 if (FD_ISSET(xfd, &rfd))
1872 xev = actionfps;
1873
1874 clock_gettime(CLOCK_MONOTONIC, &now);
1875 drawtimeout.tv_sec = 0;
1876 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
1877 tv = &drawtimeout;
1878
1879 dodraw = 0;
1880 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
1881 tsetdirtattr(ATTR_BLINK);
1882 win.mode ^= MODE_BLINK;
1883 lastblink = now;
1884 dodraw = 1;
1885 }
1886 deltatime = TIMEDIFF(now, last);
1887 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
1888 dodraw = 1;
1889 last = now;
1890 }
1891
1892 if (dodraw) {
1893 while (XPending(xw.dpy)) {
1894 XNextEvent(xw.dpy, &ev);
1895 if (XFilterEvent(&ev, None))
1896 continue;
1897 if (handler[ev.type])
1898 (handler[ev.type])(&ev);
1899 }
1900
1901 draw();
1902 XFlush(xw.dpy);
1903
1904 if (xev && !FD_ISSET(xfd, &rfd))
1905 xev--;
1906 if (!FD_ISSET(ttyfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
1907 if (blinkset) {
1908 if (TIMEDIFF(now, lastblink) \
1909 > blinktimeout) {
1910 drawtimeout.tv_nsec = 1000;
1911 } else {
1912 drawtimeout.tv_nsec = (1E6 * \
1913 (blinktimeout - \
1914 TIMEDIFF(now,
1915 lastblink)));
1916 }
1917 drawtimeout.tv_sec = \
1918 drawtimeout.tv_nsec / 1E9;
1919 drawtimeout.tv_nsec %= (long)1E9;
1920 } else {
1921 tv = NULL;
1922 }
1923 }
1924 }
1925 }
1926 }
1927
1928 void
1929 usage(void)
1930 {
1931 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
1932 " [-n name] [-o file]\n"
1933 " [-T title] [-t title] [-w windowid]"
1934 " [[-e] command [args ...]]\n"
1935 " %s [-aiv] [-c class] [-f font] [-g geometry]"
1936 " [-n name] [-o file]\n"
1937 " [-T title] [-t title] [-w windowid] -l line"
1938 " [stty_args ...]\n", argv0, argv0);
1939 }
1940
1941 int
1942 main(int argc, char *argv[])
1943 {
1944 xw.l = xw.t = 0;
1945 xw.isfixed = False;
1946 win.cursor = cursorshape;
1947
1948 ARGBEGIN {
1949 case 'a':
1950 allowaltscreen = 0;
1951 break;
1952 case 'c':
1953 opt_class = EARGF(usage());
1954 break;
1955 case 'e':
1956 if (argc > 0)
1957 --argc, ++argv;
1958 goto run;
1959 case 'f':
1960 opt_font = EARGF(usage());
1961 break;
1962 case 'g':
1963 xw.gm = XParseGeometry(EARGF(usage()),
1964 &xw.l, &xw.t, &cols, &rows);
1965 break;
1966 case 'i':
1967 xw.isfixed = 1;
1968 break;
1969 case 'o':
1970 opt_io = EARGF(usage());
1971 break;
1972 case 'l':
1973 opt_line = EARGF(usage());
1974 break;
1975 case 'n':
1976 opt_name = EARGF(usage());
1977 break;
1978 case 't':
1979 case 'T':
1980 opt_title = EARGF(usage());
1981 break;
1982 case 'w':
1983 opt_embed = EARGF(usage());
1984 break;
1985 case 'v':
1986 die("%s " VERSION "\n", argv0);
1987 break;
1988 default:
1989 usage();
1990 } ARGEND;
1991
1992 run:
1993 if (argc > 0) /* eat all remaining arguments */
1994 opt_cmd = argv;
1995
1996 if (!opt_title)
1997 opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];
1998
1999 setlocale(LC_CTYPE, "");
2000 XSetLocaleModifiers("");
2001 cols = MAX(cols, 1);
2002 rows = MAX(rows, 1);
2003 tnew(cols, rows);
2004 xinit(cols, rows);
2005 xsetenv();
2006 selinit();
2007 run();
2008
2009 return 0;
2010 }