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48a66765c182e5a2c6f38821415c4b04b34d8898
[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 XPoint spot;
101 XVaNestedList spotlist;
102 } ime;
103 Draw draw;
104 Visual *vis;
105 XSetWindowAttributes attrs;
106 int scr;
107 int isfixed; /* is fixed geometry? */
108 int l, t; /* left and top offset */
109 int gm; /* geometry mask */
110 } XWindow;
111
112 typedef struct {
113 Atom xtarget;
114 char *primary, *clipboard;
115 struct timespec tclick1;
116 struct timespec tclick2;
117 } XSelection;
118
119 /* Font structure */
120 #define Font Font_
121 typedef struct {
122 int height;
123 int width;
124 int ascent;
125 int descent;
126 int badslant;
127 int badweight;
128 short lbearing;
129 short rbearing;
130 XftFont *match;
131 FcFontSet *set;
132 FcPattern *pattern;
133 } Font;
134
135 /* Drawing Context */
136 typedef struct {
137 Color *col;
138 size_t collen;
139 Font font, bfont, ifont, ibfont;
140 GC gc;
141 } DC;
142
143 static inline ushort sixd_to_16bit(int);
144 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
145 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
146 static void xdrawglyph(Glyph, int, int);
147 static void xclear(int, int, int, int);
148 static int xgeommasktogravity(int);
149 static int ximopen(Display *);
150 static void ximinstantiate(Display *, XPointer, XPointer);
151 static void ximdestroy(XIM, XPointer, XPointer);
152 static int xicdestroy(XIC, XPointer, XPointer);
153 static void xinit(int, int);
154 static void cresize(int, int);
155 static void xresize(int, int);
156 static void xhints(void);
157 static int xloadcolor(int, const char *, Color *);
158 static int xloadfont(Font *, FcPattern *);
159 static void xloadfonts(char *, double);
160 static void xunloadfont(Font *);
161 static void xunloadfonts(void);
162 static void xsetenv(void);
163 static void xseturgency(int);
164 static int evcol(XEvent *);
165 static int evrow(XEvent *);
166
167 static void expose(XEvent *);
168 static void visibility(XEvent *);
169 static void unmap(XEvent *);
170 static void kpress(XEvent *);
171 static void cmessage(XEvent *);
172 static void resize(XEvent *);
173 static void focus(XEvent *);
174 static int mouseaction(XEvent *, uint);
175 static void brelease(XEvent *);
176 static void bpress(XEvent *);
177 static void bmotion(XEvent *);
178 static void propnotify(XEvent *);
179 static void selnotify(XEvent *);
180 static void selclear_(XEvent *);
181 static void selrequest(XEvent *);
182 static void setsel(char *, Time);
183 static void mousesel(XEvent *, int);
184 static void mousereport(XEvent *);
185 static char *kmap(KeySym, uint);
186 static int match(uint, uint);
187
188 static void run(void);
189 static void usage(void);
190
191 static void (*handler[LASTEvent])(XEvent *) = {
192 [KeyPress] = kpress,
193 [ClientMessage] = cmessage,
194 [ConfigureNotify] = resize,
195 [VisibilityNotify] = visibility,
196 [UnmapNotify] = unmap,
197 [Expose] = expose,
198 [FocusIn] = focus,
199 [FocusOut] = focus,
200 [MotionNotify] = bmotion,
201 [ButtonPress] = bpress,
202 [ButtonRelease] = brelease,
203 /*
204 * Uncomment if you want the selection to disappear when you select something
205 * different in another window.
206 */
207 /* [SelectionClear] = selclear_, */
208 [SelectionNotify] = selnotify,
209 /*
210 * PropertyNotify is only turned on when there is some INCR transfer happening
211 * for the selection retrieval.
212 */
213 [PropertyNotify] = propnotify,
214 [SelectionRequest] = selrequest,
215 };
216
217 /* Globals */
218 static DC dc;
219 static XWindow xw;
220 static XSelection xsel;
221 static TermWindow win;
222
223 /* Font Ring Cache */
224 enum {
225 FRC_NORMAL,
226 FRC_ITALIC,
227 FRC_BOLD,
228 FRC_ITALICBOLD
229 };
230
231 typedef struct {
232 XftFont *font;
233 int flags;
234 Rune unicodep;
235 } Fontcache;
236
237 /* Fontcache is an array now. A new font will be appended to the array. */
238 static Fontcache *frc = NULL;
239 static int frclen = 0;
240 static int frccap = 0;
241 static char *usedfont = NULL;
242 static double usedfontsize = 0;
243 static double defaultfontsize = 0;
244
245 static char *opt_class = NULL;
246 static char **opt_cmd = NULL;
247 static char *opt_embed = NULL;
248 static char *opt_font = NULL;
249 static char *opt_io = NULL;
250 static char *opt_line = NULL;
251 static char *opt_name = NULL;
252 static char *opt_title = NULL;
253
254 static int oldbutton = 3; /* button event on startup: 3 = release */
255
256 void
257 clipcopy(const Arg *dummy)
258 {
259 Atom clipboard;
260
261 free(xsel.clipboard);
262 xsel.clipboard = NULL;
263
264 if (xsel.primary != NULL) {
265 xsel.clipboard = xstrdup(xsel.primary);
266 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
267 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
268 }
269 }
270
271 void
272 clippaste(const Arg *dummy)
273 {
274 Atom clipboard;
275
276 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
277 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
278 xw.win, CurrentTime);
279 }
280
281 void
282 selpaste(const Arg *dummy)
283 {
284 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
285 xw.win, CurrentTime);
286 }
287
288 void
289 numlock(const Arg *dummy)
290 {
291 win.mode ^= MODE_NUMLOCK;
292 }
293
294 void
295 zoom(const Arg *arg)
296 {
297 Arg larg;
298
299 larg.f = usedfontsize + arg->f;
300 zoomabs(&larg);
301 }
302
303 void
304 zoomabs(const Arg *arg)
305 {
306 xunloadfonts();
307 xloadfonts(usedfont, arg->f);
308 cresize(0, 0);
309 redraw();
310 xhints();
311 }
312
313 void
314 zoomreset(const Arg *arg)
315 {
316 Arg larg;
317
318 if (defaultfontsize > 0) {
319 larg.f = defaultfontsize;
320 zoomabs(&larg);
321 }
322 }
323
324 void
325 ttysend(const Arg *arg)
326 {
327 ttywrite(arg->s, strlen(arg->s), 1);
328 }
329
330 int
331 evcol(XEvent *e)
332 {
333 int x = e->xbutton.x - borderpx;
334 LIMIT(x, 0, win.tw - 1);
335 return x / win.cw;
336 }
337
338 int
339 evrow(XEvent *e)
340 {
341 int y = e->xbutton.y - borderpx;
342 LIMIT(y, 0, win.th - 1);
343 return y / win.ch;
344 }
345
346 void
347 mousesel(XEvent *e, int done)
348 {
349 int type, seltype = SEL_REGULAR;
350 uint state = e->xbutton.state & ~(Button1Mask | forcemousemod);
351
352 for (type = 1; type < LEN(selmasks); ++type) {
353 if (match(selmasks[type], state)) {
354 seltype = type;
355 break;
356 }
357 }
358 selextend(evcol(e), evrow(e), seltype, done);
359 if (done)
360 setsel(getsel(), e->xbutton.time);
361 }
362
363 void
364 mousereport(XEvent *e)
365 {
366 int len, x = evcol(e), y = evrow(e),
367 button = e->xbutton.button, state = e->xbutton.state;
368 char buf[40];
369 static int ox, oy;
370
371 /* from urxvt */
372 if (e->xbutton.type == MotionNotify) {
373 if (x == ox && y == oy)
374 return;
375 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
376 return;
377 /* MOUSE_MOTION: no reporting if no button is pressed */
378 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
379 return;
380
381 button = oldbutton + 32;
382 ox = x;
383 oy = y;
384 } else {
385 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
386 button = 3;
387 } else {
388 button -= Button1;
389 if (button >= 3)
390 button += 64 - 3;
391 }
392 if (e->xbutton.type == ButtonPress) {
393 oldbutton = button;
394 ox = x;
395 oy = y;
396 } else if (e->xbutton.type == ButtonRelease) {
397 oldbutton = 3;
398 /* MODE_MOUSEX10: no button release reporting */
399 if (IS_SET(MODE_MOUSEX10))
400 return;
401 if (button == 64 || button == 65)
402 return;
403 }
404 }
405
406 if (!IS_SET(MODE_MOUSEX10)) {
407 button += ((state & ShiftMask ) ? 4 : 0)
408 + ((state & Mod4Mask ) ? 8 : 0)
409 + ((state & ControlMask) ? 16 : 0);
410 }
411
412 if (IS_SET(MODE_MOUSESGR)) {
413 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
414 button, x+1, y+1,
415 e->xbutton.type == ButtonRelease ? 'm' : 'M');
416 } else if (x < 223 && y < 223) {
417 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
418 32+button, 32+x+1, 32+y+1);
419 } else {
420 return;
421 }
422
423 ttywrite(buf, len, 0);
424 }
425
426 int
427 mouseaction(XEvent *e, uint release)
428 {
429 MouseShortcut *ms;
430
431 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
432 if (ms->release == release &&
433 ms->button == e->xbutton.button &&
434 (match(ms->mod, e->xbutton.state) || /* exact or forced */
435 match(ms->mod, e->xbutton.state & ~forcemousemod))) {
436 ms->func(&(ms->arg));
437 return 1;
438 }
439 }
440
441 return 0;
442 }
443
444 void
445 bpress(XEvent *e)
446 {
447 struct timespec now;
448 int snap;
449
450 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
451 mousereport(e);
452 return;
453 }
454
455 if (mouseaction(e, 0))
456 return;
457
458 if (e->xbutton.button == Button1) {
459 /*
460 * If the user clicks below predefined timeouts specific
461 * snapping behaviour is exposed.
462 */
463 clock_gettime(CLOCK_MONOTONIC, &now);
464 if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
465 snap = SNAP_LINE;
466 } else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
467 snap = SNAP_WORD;
468 } else {
469 snap = 0;
470 }
471 xsel.tclick2 = xsel.tclick1;
472 xsel.tclick1 = now;
473
474 selstart(evcol(e), evrow(e), snap);
475 }
476 }
477
478 void
479 propnotify(XEvent *e)
480 {
481 XPropertyEvent *xpev;
482 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
483
484 xpev = &e->xproperty;
485 if (xpev->state == PropertyNewValue &&
486 (xpev->atom == XA_PRIMARY ||
487 xpev->atom == clipboard)) {
488 selnotify(e);
489 }
490 }
491
492 void
493 selnotify(XEvent *e)
494 {
495 ulong nitems, ofs, rem;
496 int format;
497 uchar *data, *last, *repl;
498 Atom type, incratom, property = None;
499
500 incratom = XInternAtom(xw.dpy, "INCR", 0);
501
502 ofs = 0;
503 if (e->type == SelectionNotify)
504 property = e->xselection.property;
505 else if (e->type == PropertyNotify)
506 property = e->xproperty.atom;
507
508 if (property == None)
509 return;
510
511 do {
512 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
513 BUFSIZ/4, False, AnyPropertyType,
514 &type, &format, &nitems, &rem,
515 &data)) {
516 fprintf(stderr, "Clipboard allocation failed\n");
517 return;
518 }
519
520 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
521 /*
522 * If there is some PropertyNotify with no data, then
523 * this is the signal of the selection owner that all
524 * data has been transferred. We won't need to receive
525 * PropertyNotify events anymore.
526 */
527 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
528 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
529 &xw.attrs);
530 }
531
532 if (type == incratom) {
533 /*
534 * Activate the PropertyNotify events so we receive
535 * when the selection owner does send us the next
536 * chunk of data.
537 */
538 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
539 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
540 &xw.attrs);
541
542 /*
543 * Deleting the property is the transfer start signal.
544 */
545 XDeleteProperty(xw.dpy, xw.win, (int)property);
546 continue;
547 }
548
549 /*
550 * As seen in getsel:
551 * Line endings are inconsistent in the terminal and GUI world
552 * copy and pasting. When receiving some selection data,
553 * replace all '\n' with '\r'.
554 * FIXME: Fix the computer world.
555 */
556 repl = data;
557 last = data + nitems * format / 8;
558 while ((repl = memchr(repl, '\n', last - repl))) {
559 *repl++ = '\r';
560 }
561
562 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
563 ttywrite("\033[200~", 6, 0);
564 ttywrite((char *)data, nitems * format / 8, 1);
565 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
566 ttywrite("\033[201~", 6, 0);
567 XFree(data);
568 /* number of 32-bit chunks returned */
569 ofs += nitems * format / 32;
570 } while (rem > 0);
571
572 /*
573 * Deleting the property again tells the selection owner to send the
574 * next data chunk in the property.
575 */
576 XDeleteProperty(xw.dpy, xw.win, (int)property);
577 }
578
579 void
580 xclipcopy(void)
581 {
582 clipcopy(NULL);
583 }
584
585 void
586 selclear_(XEvent *e)
587 {
588 selclear();
589 }
590
591 void
592 selrequest(XEvent *e)
593 {
594 XSelectionRequestEvent *xsre;
595 XSelectionEvent xev;
596 Atom xa_targets, string, clipboard;
597 char *seltext;
598
599 xsre = (XSelectionRequestEvent *) e;
600 xev.type = SelectionNotify;
601 xev.requestor = xsre->requestor;
602 xev.selection = xsre->selection;
603 xev.target = xsre->target;
604 xev.time = xsre->time;
605 if (xsre->property == None)
606 xsre->property = xsre->target;
607
608 /* reject */
609 xev.property = None;
610
611 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
612 if (xsre->target == xa_targets) {
613 /* respond with the supported type */
614 string = xsel.xtarget;
615 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
616 XA_ATOM, 32, PropModeReplace,
617 (uchar *) &string, 1);
618 xev.property = xsre->property;
619 } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
620 /*
621 * xith XA_STRING non ascii characters may be incorrect in the
622 * requestor. It is not our problem, use utf8.
623 */
624 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
625 if (xsre->selection == XA_PRIMARY) {
626 seltext = xsel.primary;
627 } else if (xsre->selection == clipboard) {
628 seltext = xsel.clipboard;
629 } else {
630 fprintf(stderr,
631 "Unhandled clipboard selection 0x%lx\n",
632 xsre->selection);
633 return;
634 }
635 if (seltext != NULL) {
636 XChangeProperty(xsre->display, xsre->requestor,
637 xsre->property, xsre->target,
638 8, PropModeReplace,
639 (uchar *)seltext, strlen(seltext));
640 xev.property = xsre->property;
641 }
642 }
643
644 /* all done, send a notification to the listener */
645 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
646 fprintf(stderr, "Error sending SelectionNotify event\n");
647 }
648
649 void
650 setsel(char *str, Time t)
651 {
652 if (!str)
653 return;
654
655 free(xsel.primary);
656 xsel.primary = str;
657
658 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
659 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
660 selclear();
661 }
662
663 void
664 xsetsel(char *str)
665 {
666 setsel(str, CurrentTime);
667 }
668
669 void
670 brelease(XEvent *e)
671 {
672 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
673 mousereport(e);
674 return;
675 }
676
677 if (mouseaction(e, 1))
678 return;
679 if (e->xbutton.button == Button1)
680 mousesel(e, 1);
681 }
682
683 void
684 bmotion(XEvent *e)
685 {
686 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
687 mousereport(e);
688 return;
689 }
690
691 mousesel(e, 0);
692 }
693
694 void
695 cresize(int width, int height)
696 {
697 int col, row;
698
699 if (width != 0)
700 win.w = width;
701 if (height != 0)
702 win.h = height;
703
704 col = (win.w - 2 * borderpx) / win.cw;
705 row = (win.h - 2 * borderpx) / win.ch;
706 col = MAX(1, col);
707 row = MAX(1, row);
708
709 tresize(col, row);
710 xresize(col, row);
711 ttyresize(win.tw, win.th);
712 }
713
714 void
715 xresize(int col, int row)
716 {
717 win.tw = col * win.cw;
718 win.th = row * win.ch;
719
720 XFreePixmap(xw.dpy, xw.buf);
721 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
722 DefaultDepth(xw.dpy, xw.scr));
723 XftDrawChange(xw.draw, xw.buf);
724 xclear(0, 0, win.w, win.h);
725
726 /* resize to new width */
727 xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
728 }
729
730 ushort
731 sixd_to_16bit(int x)
732 {
733 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
734 }
735
736 int
737 xloadcolor(int i, const char *name, Color *ncolor)
738 {
739 XRenderColor color = { .alpha = 0xffff };
740
741 if (!name) {
742 if (BETWEEN(i, 16, 255)) { /* 256 color */
743 if (i < 6*6*6+16) { /* same colors as xterm */
744 color.red = sixd_to_16bit( ((i-16)/36)%6 );
745 color.green = sixd_to_16bit( ((i-16)/6) %6 );
746 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
747 } else { /* greyscale */
748 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
749 color.green = color.blue = color.red;
750 }
751 return XftColorAllocValue(xw.dpy, xw.vis,
752 xw.cmap, &color, ncolor);
753 } else
754 name = colorname[i];
755 }
756
757 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
758 }
759
760 void
761 xloadcols(void)
762 {
763 int i;
764 static int loaded;
765 Color *cp;
766
767 if (loaded) {
768 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
769 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
770 } else {
771 dc.collen = MAX(LEN(colorname), 256);
772 dc.col = xmalloc(dc.collen * sizeof(Color));
773 }
774
775 for (i = 0; i < dc.collen; i++)
776 if (!xloadcolor(i, NULL, &dc.col[i])) {
777 if (colorname[i])
778 die("could not allocate color '%s'\n", colorname[i]);
779 else
780 die("could not allocate color %d\n", i);
781 }
782 loaded = 1;
783 }
784
785 int
786 xsetcolorname(int x, const char *name)
787 {
788 Color ncolor;
789
790 if (!BETWEEN(x, 0, dc.collen))
791 return 1;
792
793 if (!xloadcolor(x, name, &ncolor))
794 return 1;
795
796 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
797 dc.col[x] = ncolor;
798
799 return 0;
800 }
801
802 /*
803 * Absolute coordinates.
804 */
805 void
806 xclear(int x1, int y1, int x2, int y2)
807 {
808 XftDrawRect(xw.draw,
809 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
810 x1, y1, x2-x1, y2-y1);
811 }
812
813 void
814 xhints(void)
815 {
816 XClassHint class = {opt_name ? opt_name : termname,
817 opt_class ? opt_class : termname};
818 XWMHints wm = {.flags = InputHint, .input = 1};
819 XSizeHints *sizeh;
820
821 sizeh = XAllocSizeHints();
822
823 sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
824 sizeh->height = win.h;
825 sizeh->width = win.w;
826 sizeh->height_inc = win.ch;
827 sizeh->width_inc = win.cw;
828 sizeh->base_height = 2 * borderpx;
829 sizeh->base_width = 2 * borderpx;
830 sizeh->min_height = win.ch + 2 * borderpx;
831 sizeh->min_width = win.cw + 2 * borderpx;
832 if (xw.isfixed) {
833 sizeh->flags |= PMaxSize;
834 sizeh->min_width = sizeh->max_width = win.w;
835 sizeh->min_height = sizeh->max_height = win.h;
836 }
837 if (xw.gm & (XValue|YValue)) {
838 sizeh->flags |= USPosition | PWinGravity;
839 sizeh->x = xw.l;
840 sizeh->y = xw.t;
841 sizeh->win_gravity = xgeommasktogravity(xw.gm);
842 }
843
844 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
845 &class);
846 XFree(sizeh);
847 }
848
849 int
850 xgeommasktogravity(int mask)
851 {
852 switch (mask & (XNegative|YNegative)) {
853 case 0:
854 return NorthWestGravity;
855 case XNegative:
856 return NorthEastGravity;
857 case YNegative:
858 return SouthWestGravity;
859 }
860
861 return SouthEastGravity;
862 }
863
864 int
865 xloadfont(Font *f, FcPattern *pattern)
866 {
867 FcPattern *configured;
868 FcPattern *match;
869 FcResult result;
870 XGlyphInfo extents;
871 int wantattr, haveattr;
872
873 /*
874 * Manually configure instead of calling XftMatchFont
875 * so that we can use the configured pattern for
876 * "missing glyph" lookups.
877 */
878 configured = FcPatternDuplicate(pattern);
879 if (!configured)
880 return 1;
881
882 FcConfigSubstitute(NULL, configured, FcMatchPattern);
883 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
884
885 match = FcFontMatch(NULL, configured, &result);
886 if (!match) {
887 FcPatternDestroy(configured);
888 return 1;
889 }
890
891 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
892 FcPatternDestroy(configured);
893 FcPatternDestroy(match);
894 return 1;
895 }
896
897 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
898 XftResultMatch)) {
899 /*
900 * Check if xft was unable to find a font with the appropriate
901 * slant but gave us one anyway. Try to mitigate.
902 */
903 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
904 &haveattr) != XftResultMatch) || haveattr < wantattr) {
905 f->badslant = 1;
906 fputs("font slant does not match\n", stderr);
907 }
908 }
909
910 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
911 XftResultMatch)) {
912 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
913 &haveattr) != XftResultMatch) || haveattr != wantattr) {
914 f->badweight = 1;
915 fputs("font weight does not match\n", stderr);
916 }
917 }
918
919 XftTextExtentsUtf8(xw.dpy, f->match,
920 (const FcChar8 *) ascii_printable,
921 strlen(ascii_printable), &extents);
922
923 f->set = NULL;
924 f->pattern = configured;
925
926 f->ascent = f->match->ascent;
927 f->descent = f->match->descent;
928 f->lbearing = 0;
929 f->rbearing = f->match->max_advance_width;
930
931 f->height = f->ascent + f->descent;
932 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
933
934 return 0;
935 }
936
937 void
938 xloadfonts(char *fontstr, double fontsize)
939 {
940 FcPattern *pattern;
941 double fontval;
942
943 if (fontstr[0] == '-')
944 pattern = XftXlfdParse(fontstr, False, False);
945 else
946 pattern = FcNameParse((FcChar8 *)fontstr);
947
948 if (!pattern)
949 die("can't open font %s\n", fontstr);
950
951 if (fontsize > 1) {
952 FcPatternDel(pattern, FC_PIXEL_SIZE);
953 FcPatternDel(pattern, FC_SIZE);
954 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
955 usedfontsize = fontsize;
956 } else {
957 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
958 FcResultMatch) {
959 usedfontsize = fontval;
960 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
961 FcResultMatch) {
962 usedfontsize = -1;
963 } else {
964 /*
965 * Default font size is 12, if none given. This is to
966 * have a known usedfontsize value.
967 */
968 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
969 usedfontsize = 12;
970 }
971 defaultfontsize = usedfontsize;
972 }
973
974 if (xloadfont(&dc.font, pattern))
975 die("can't open font %s\n", fontstr);
976
977 if (usedfontsize < 0) {
978 FcPatternGetDouble(dc.font.match->pattern,
979 FC_PIXEL_SIZE, 0, &fontval);
980 usedfontsize = fontval;
981 if (fontsize == 0)
982 defaultfontsize = fontval;
983 }
984
985 /* Setting character width and height. */
986 win.cw = ceilf(dc.font.width * cwscale);
987 win.ch = ceilf(dc.font.height * chscale);
988
989 FcPatternDel(pattern, FC_SLANT);
990 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
991 if (xloadfont(&dc.ifont, pattern))
992 die("can't open font %s\n", fontstr);
993
994 FcPatternDel(pattern, FC_WEIGHT);
995 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
996 if (xloadfont(&dc.ibfont, pattern))
997 die("can't open font %s\n", fontstr);
998
999 FcPatternDel(pattern, FC_SLANT);
1000 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
1001 if (xloadfont(&dc.bfont, pattern))
1002 die("can't open font %s\n", fontstr);
1003
1004 FcPatternDestroy(pattern);
1005 }
1006
1007 void
1008 xunloadfont(Font *f)
1009 {
1010 XftFontClose(xw.dpy, f->match);
1011 FcPatternDestroy(f->pattern);
1012 if (f->set)
1013 FcFontSetDestroy(f->set);
1014 }
1015
1016 void
1017 xunloadfonts(void)
1018 {
1019 /* Free the loaded fonts in the font cache. */
1020 while (frclen > 0)
1021 XftFontClose(xw.dpy, frc[--frclen].font);
1022
1023 xunloadfont(&dc.font);
1024 xunloadfont(&dc.bfont);
1025 xunloadfont(&dc.ifont);
1026 xunloadfont(&dc.ibfont);
1027 }
1028
1029 int
1030 ximopen(Display *dpy)
1031 {
1032 XIMCallback imdestroy = { .client_data = NULL, .callback = ximdestroy };
1033 XICCallback icdestroy = { .client_data = NULL, .callback = xicdestroy };
1034
1035 xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
1036 if (xw.ime.xim == NULL)
1037 return 0;
1038
1039 if (XSetIMValues(xw.ime.xim, XNDestroyCallback, &imdestroy, NULL))
1040 fprintf(stderr, "XSetIMValues: "
1041 "Could not set XNDestroyCallback.\n");
1042
1043 xw.ime.spotlist = XVaCreateNestedList(0, XNSpotLocation, &xw.ime.spot,
1044 NULL);
1045
1046 if (xw.ime.xic == NULL) {
1047 xw.ime.xic = XCreateIC(xw.ime.xim, XNInputStyle,
1048 XIMPreeditNothing | XIMStatusNothing,
1049 XNClientWindow, xw.win,
1050 XNDestroyCallback, &icdestroy,
1051 NULL);
1052 }
1053 if (xw.ime.xic == NULL)
1054 fprintf(stderr, "XCreateIC: Could not create input context.\n");
1055
1056 return 1;
1057 }
1058
1059 void
1060 ximinstantiate(Display *dpy, XPointer client, XPointer call)
1061 {
1062 if (ximopen(dpy))
1063 XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1064 ximinstantiate, NULL);
1065 }
1066
1067 void
1068 ximdestroy(XIM xim, XPointer client, XPointer call)
1069 {
1070 xw.ime.xim = NULL;
1071 XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1072 ximinstantiate, NULL);
1073 XFree(xw.ime.spotlist);
1074 }
1075
1076 int
1077 xicdestroy(XIC xim, XPointer client, XPointer call)
1078 {
1079 xw.ime.xic = NULL;
1080 return 1;
1081 }
1082
1083 void
1084 xinit(int cols, int rows)
1085 {
1086 XGCValues gcvalues;
1087 Cursor cursor;
1088 Window parent;
1089 pid_t thispid = getpid();
1090 XColor xmousefg, xmousebg;
1091
1092 if (!(xw.dpy = XOpenDisplay(NULL)))
1093 die("can't open display\n");
1094 xw.scr = XDefaultScreen(xw.dpy);
1095 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
1096
1097 /* font */
1098 if (!FcInit())
1099 die("could not init fontconfig.\n");
1100
1101 usedfont = (opt_font == NULL)? font : opt_font;
1102 xloadfonts(usedfont, 0);
1103
1104 /* colors */
1105 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1106 xloadcols();
1107
1108 /* adjust fixed window geometry */
1109 win.w = 2 * borderpx + cols * win.cw;
1110 win.h = 2 * borderpx + rows * win.ch;
1111 if (xw.gm & XNegative)
1112 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
1113 if (xw.gm & YNegative)
1114 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
1115
1116 /* Events */
1117 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
1118 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
1119 xw.attrs.bit_gravity = NorthWestGravity;
1120 xw.attrs.event_mask = FocusChangeMask | KeyPressMask | KeyReleaseMask
1121 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1122 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
1123 xw.attrs.colormap = xw.cmap;
1124
1125 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
1126 parent = XRootWindow(xw.dpy, xw.scr);
1127 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
1128 win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1129 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
1130 | CWEventMask | CWColormap, &xw.attrs);
1131
1132 memset(&gcvalues, 0, sizeof(gcvalues));
1133 gcvalues.graphics_exposures = False;
1134 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
1135 &gcvalues);
1136 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
1137 DefaultDepth(xw.dpy, xw.scr));
1138 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
1139 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
1140
1141 /* font spec buffer */
1142 xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
1143
1144 /* Xft rendering context */
1145 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
1146
1147 /* input methods */
1148 if (!ximopen(xw.dpy)) {
1149 XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1150 ximinstantiate, NULL);
1151 }
1152
1153 /* white cursor, black outline */
1154 cursor = XCreateFontCursor(xw.dpy, mouseshape);
1155 XDefineCursor(xw.dpy, xw.win, cursor);
1156
1157 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
1158 xmousefg.red = 0xffff;
1159 xmousefg.green = 0xffff;
1160 xmousefg.blue = 0xffff;
1161 }
1162
1163 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
1164 xmousebg.red = 0x0000;
1165 xmousebg.green = 0x0000;
1166 xmousebg.blue = 0x0000;
1167 }
1168
1169 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
1170
1171 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1172 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
1173 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
1174 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
1175
1176 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
1177 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
1178 PropModeReplace, (uchar *)&thispid, 1);
1179
1180 win.mode = MODE_NUMLOCK;
1181 resettitle();
1182 xhints();
1183 XMapWindow(xw.dpy, xw.win);
1184 XSync(xw.dpy, False);
1185
1186 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
1187 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
1188 xsel.primary = NULL;
1189 xsel.clipboard = NULL;
1190 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
1191 if (xsel.xtarget == None)
1192 xsel.xtarget = XA_STRING;
1193 }
1194
1195 int
1196 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
1197 {
1198 float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
1199 ushort mode, prevmode = USHRT_MAX;
1200 Font *font = &dc.font;
1201 int frcflags = FRC_NORMAL;
1202 float runewidth = win.cw;
1203 Rune rune;
1204 FT_UInt glyphidx;
1205 FcResult fcres;
1206 FcPattern *fcpattern, *fontpattern;
1207 FcFontSet *fcsets[] = { NULL };
1208 FcCharSet *fccharset;
1209 int i, f, numspecs = 0;
1210
1211 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1212 /* Fetch rune and mode for current glyph. */
1213 rune = glyphs[i].u;
1214 mode = glyphs[i].mode;
1215
1216 /* Skip dummy wide-character spacing. */
1217 if (mode == ATTR_WDUMMY)
1218 continue;
1219
1220 /* Determine font for glyph if different from previous glyph. */
1221 if (prevmode != mode) {
1222 prevmode = mode;
1223 font = &dc.font;
1224 frcflags = FRC_NORMAL;
1225 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1226 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1227 font = &dc.ibfont;
1228 frcflags = FRC_ITALICBOLD;
1229 } else if (mode & ATTR_ITALIC) {
1230 font = &dc.ifont;
1231 frcflags = FRC_ITALIC;
1232 } else if (mode & ATTR_BOLD) {
1233 font = &dc.bfont;
1234 frcflags = FRC_BOLD;
1235 }
1236 yp = winy + font->ascent;
1237 }
1238
1239 /* Lookup character index with default font. */
1240 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1241 if (glyphidx) {
1242 specs[numspecs].font = font->match;
1243 specs[numspecs].glyph = glyphidx;
1244 specs[numspecs].x = (short)xp;
1245 specs[numspecs].y = (short)yp;
1246 xp += runewidth;
1247 numspecs++;
1248 continue;
1249 }
1250
1251 /* Fallback on font cache, search the font cache for match. */
1252 for (f = 0; f < frclen; f++) {
1253 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1254 /* Everything correct. */
1255 if (glyphidx && frc[f].flags == frcflags)
1256 break;
1257 /* We got a default font for a not found glyph. */
1258 if (!glyphidx && frc[f].flags == frcflags
1259 && frc[f].unicodep == rune) {
1260 break;
1261 }
1262 }
1263
1264 /* Nothing was found. Use fontconfig to find matching font. */
1265 if (f >= frclen) {
1266 if (!font->set)
1267 font->set = FcFontSort(0, font->pattern,
1268 1, 0, &fcres);
1269 fcsets[0] = font->set;
1270
1271 /*
1272 * Nothing was found in the cache. Now use
1273 * some dozen of Fontconfig calls to get the
1274 * font for one single character.
1275 *
1276 * Xft and fontconfig are design failures.
1277 */
1278 fcpattern = FcPatternDuplicate(font->pattern);
1279 fccharset = FcCharSetCreate();
1280
1281 FcCharSetAddChar(fccharset, rune);
1282 FcPatternAddCharSet(fcpattern, FC_CHARSET,
1283 fccharset);
1284 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1285
1286 FcConfigSubstitute(0, fcpattern,
1287 FcMatchPattern);
1288 FcDefaultSubstitute(fcpattern);
1289
1290 fontpattern = FcFontSetMatch(0, fcsets, 1,
1291 fcpattern, &fcres);
1292
1293 /* Allocate memory for the new cache entry. */
1294 if (frclen >= frccap) {
1295 frccap += 16;
1296 frc = xrealloc(frc, frccap * sizeof(Fontcache));
1297 }
1298
1299 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1300 fontpattern);
1301 if (!frc[frclen].font)
1302 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1303 strerror(errno));
1304 frc[frclen].flags = frcflags;
1305 frc[frclen].unicodep = rune;
1306
1307 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1308
1309 f = frclen;
1310 frclen++;
1311
1312 FcPatternDestroy(fcpattern);
1313 FcCharSetDestroy(fccharset);
1314 }
1315
1316 specs[numspecs].font = frc[f].font;
1317 specs[numspecs].glyph = glyphidx;
1318 specs[numspecs].x = (short)xp;
1319 specs[numspecs].y = (short)yp;
1320 xp += runewidth;
1321 numspecs++;
1322 }
1323
1324 return numspecs;
1325 }
1326
1327 void
1328 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1329 {
1330 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1331 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1332 width = charlen * win.cw;
1333 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1334 XRenderColor colfg, colbg;
1335 XRectangle r;
1336
1337 /* Fallback on color display for attributes not supported by the font */
1338 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1339 if (dc.ibfont.badslant || dc.ibfont.badweight)
1340 base.fg = defaultattr;
1341 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1342 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1343 base.fg = defaultattr;
1344 }
1345
1346 if (IS_TRUECOL(base.fg)) {
1347 colfg.alpha = 0xffff;
1348 colfg.red = TRUERED(base.fg);
1349 colfg.green = TRUEGREEN(base.fg);
1350 colfg.blue = TRUEBLUE(base.fg);
1351 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1352 fg = &truefg;
1353 } else {
1354 fg = &dc.col[base.fg];
1355 }
1356
1357 if (IS_TRUECOL(base.bg)) {
1358 colbg.alpha = 0xffff;
1359 colbg.green = TRUEGREEN(base.bg);
1360 colbg.red = TRUERED(base.bg);
1361 colbg.blue = TRUEBLUE(base.bg);
1362 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1363 bg = &truebg;
1364 } else {
1365 bg = &dc.col[base.bg];
1366 }
1367
1368 /* Change basic system colors [0-7] to bright system colors [8-15] */
1369 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1370 fg = &dc.col[base.fg + 8];
1371
1372 if (IS_SET(MODE_REVERSE)) {
1373 if (fg == &dc.col[defaultfg]) {
1374 fg = &dc.col[defaultbg];
1375 } else {
1376 colfg.red = ~fg->color.red;
1377 colfg.green = ~fg->color.green;
1378 colfg.blue = ~fg->color.blue;
1379 colfg.alpha = fg->color.alpha;
1380 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1381 &revfg);
1382 fg = &revfg;
1383 }
1384
1385 if (bg == &dc.col[defaultbg]) {
1386 bg = &dc.col[defaultfg];
1387 } else {
1388 colbg.red = ~bg->color.red;
1389 colbg.green = ~bg->color.green;
1390 colbg.blue = ~bg->color.blue;
1391 colbg.alpha = bg->color.alpha;
1392 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1393 &revbg);
1394 bg = &revbg;
1395 }
1396 }
1397
1398 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1399 colfg.red = fg->color.red / 2;
1400 colfg.green = fg->color.green / 2;
1401 colfg.blue = fg->color.blue / 2;
1402 colfg.alpha = fg->color.alpha;
1403 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1404 fg = &revfg;
1405 }
1406
1407 if (base.mode & ATTR_REVERSE) {
1408 temp = fg;
1409 fg = bg;
1410 bg = temp;
1411 }
1412
1413 if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
1414 fg = bg;
1415
1416 if (base.mode & ATTR_INVISIBLE)
1417 fg = bg;
1418
1419 /* Intelligent cleaning up of the borders. */
1420 if (x == 0) {
1421 xclear(0, (y == 0)? 0 : winy, borderpx,
1422 winy + win.ch +
1423 ((winy + win.ch >= borderpx + win.th)? win.h : 0));
1424 }
1425 if (winx + width >= borderpx + win.tw) {
1426 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1427 ((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
1428 }
1429 if (y == 0)
1430 xclear(winx, 0, winx + width, borderpx);
1431 if (winy + win.ch >= borderpx + win.th)
1432 xclear(winx, winy + win.ch, winx + width, win.h);
1433
1434 /* Clean up the region we want to draw to. */
1435 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1436
1437 /* Set the clip region because Xft is sometimes dirty. */
1438 r.x = 0;
1439 r.y = 0;
1440 r.height = win.ch;
1441 r.width = width;
1442 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1443
1444 /* Render the glyphs. */
1445 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1446
1447 /* Render underline and strikethrough. */
1448 if (base.mode & ATTR_UNDERLINE) {
1449 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
1450 width, 1);
1451 }
1452
1453 if (base.mode & ATTR_STRUCK) {
1454 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
1455 width, 1);
1456 }
1457
1458 /* Reset clip to none. */
1459 XftDrawSetClip(xw.draw, 0);
1460 }
1461
1462 void
1463 xdrawglyph(Glyph g, int x, int y)
1464 {
1465 int numspecs;
1466 XftGlyphFontSpec spec;
1467
1468 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1469 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1470 }
1471
1472 void
1473 xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
1474 {
1475 Color drawcol;
1476
1477 /* remove the old cursor */
1478 if (selected(ox, oy))
1479 og.mode ^= ATTR_REVERSE;
1480 xdrawglyph(og, ox, oy);
1481
1482 if (IS_SET(MODE_HIDE))
1483 return;
1484
1485 /*
1486 * Select the right color for the right mode.
1487 */
1488 g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
1489
1490 if (IS_SET(MODE_REVERSE)) {
1491 g.mode |= ATTR_REVERSE;
1492 g.bg = defaultfg;
1493 if (selected(cx, cy)) {
1494 drawcol = dc.col[defaultcs];
1495 g.fg = defaultrcs;
1496 } else {
1497 drawcol = dc.col[defaultrcs];
1498 g.fg = defaultcs;
1499 }
1500 } else {
1501 if (selected(cx, cy)) {
1502 g.fg = defaultfg;
1503 g.bg = defaultrcs;
1504 } else {
1505 g.fg = defaultbg;
1506 g.bg = defaultcs;
1507 }
1508 drawcol = dc.col[g.bg];
1509 }
1510
1511 /* draw the new one */
1512 if (IS_SET(MODE_FOCUSED)) {
1513 switch (win.cursor) {
1514 case 7: /* st extension: snowman (U+2603) */
1515 g.u = 0x2603;
1516 case 0: /* Blinking Block */
1517 case 1: /* Blinking Block (Default) */
1518 case 2: /* Steady Block */
1519 xdrawglyph(g, cx, cy);
1520 break;
1521 case 3: /* Blinking Underline */
1522 case 4: /* Steady Underline */
1523 XftDrawRect(xw.draw, &drawcol,
1524 borderpx + cx * win.cw,
1525 borderpx + (cy + 1) * win.ch - \
1526 cursorthickness,
1527 win.cw, cursorthickness);
1528 break;
1529 case 5: /* Blinking bar */
1530 case 6: /* Steady bar */
1531 XftDrawRect(xw.draw, &drawcol,
1532 borderpx + cx * win.cw,
1533 borderpx + cy * win.ch,
1534 cursorthickness, win.ch);
1535 break;
1536 }
1537 } else {
1538 XftDrawRect(xw.draw, &drawcol,
1539 borderpx + cx * win.cw,
1540 borderpx + cy * win.ch,
1541 win.cw - 1, 1);
1542 XftDrawRect(xw.draw, &drawcol,
1543 borderpx + cx * win.cw,
1544 borderpx + cy * win.ch,
1545 1, win.ch - 1);
1546 XftDrawRect(xw.draw, &drawcol,
1547 borderpx + (cx + 1) * win.cw - 1,
1548 borderpx + cy * win.ch,
1549 1, win.ch - 1);
1550 XftDrawRect(xw.draw, &drawcol,
1551 borderpx + cx * win.cw,
1552 borderpx + (cy + 1) * win.ch - 1,
1553 win.cw, 1);
1554 }
1555 }
1556
1557 void
1558 xsetenv(void)
1559 {
1560 char buf[sizeof(long) * 8 + 1];
1561
1562 snprintf(buf, sizeof(buf), "%lu", xw.win);
1563 setenv("WINDOWID", buf, 1);
1564 }
1565
1566 void
1567 xsettitle(char *p)
1568 {
1569 XTextProperty prop;
1570 DEFAULT(p, opt_title);
1571
1572 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1573 &prop);
1574 XSetWMName(xw.dpy, xw.win, &prop);
1575 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1576 XFree(prop.value);
1577 }
1578
1579 int
1580 xstartdraw(void)
1581 {
1582 return IS_SET(MODE_VISIBLE);
1583 }
1584
1585 void
1586 xdrawline(Line line, int x1, int y1, int x2)
1587 {
1588 int i, x, ox, numspecs;
1589 Glyph base, new;
1590 XftGlyphFontSpec *specs = xw.specbuf;
1591
1592 numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
1593 i = ox = 0;
1594 for (x = x1; x < x2 && i < numspecs; x++) {
1595 new = line[x];
1596 if (new.mode == ATTR_WDUMMY)
1597 continue;
1598 if (selected(x, y1))
1599 new.mode ^= ATTR_REVERSE;
1600 if (i > 0 && ATTRCMP(base, new)) {
1601 xdrawglyphfontspecs(specs, base, i, ox, y1);
1602 specs += i;
1603 numspecs -= i;
1604 i = 0;
1605 }
1606 if (i == 0) {
1607 ox = x;
1608 base = new;
1609 }
1610 i++;
1611 }
1612 if (i > 0)
1613 xdrawglyphfontspecs(specs, base, i, ox, y1);
1614 }
1615
1616 void
1617 xfinishdraw(void)
1618 {
1619 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1620 win.h, 0, 0);
1621 XSetForeground(xw.dpy, dc.gc,
1622 dc.col[IS_SET(MODE_REVERSE)?
1623 defaultfg : defaultbg].pixel);
1624 }
1625
1626 void
1627 xximspot(int x, int y)
1628 {
1629 if (xw.ime.xic == NULL)
1630 return;
1631
1632 xw.ime.spot.x = borderpx + x * win.cw;
1633 xw.ime.spot.y = borderpx + (y + 1) * win.ch;
1634
1635 XSetICValues(xw.ime.xic, XNPreeditAttributes, xw.ime.spotlist, NULL);
1636 }
1637
1638 void
1639 expose(XEvent *ev)
1640 {
1641 redraw();
1642 }
1643
1644 void
1645 visibility(XEvent *ev)
1646 {
1647 XVisibilityEvent *e = &ev->xvisibility;
1648
1649 MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
1650 }
1651
1652 void
1653 unmap(XEvent *ev)
1654 {
1655 win.mode &= ~MODE_VISIBLE;
1656 }
1657
1658 void
1659 xsetpointermotion(int set)
1660 {
1661 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1662 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1663 }
1664
1665 void
1666 xsetmode(int set, unsigned int flags)
1667 {
1668 int mode = win.mode;
1669 MODBIT(win.mode, set, flags);
1670 if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
1671 redraw();
1672 }
1673
1674 int
1675 xsetcursor(int cursor)
1676 {
1677 DEFAULT(cursor, 1);
1678 if (!BETWEEN(cursor, 0, 6))
1679 return 1;
1680 win.cursor = cursor;
1681 return 0;
1682 }
1683
1684 void
1685 xseturgency(int add)
1686 {
1687 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1688
1689 MODBIT(h->flags, add, XUrgencyHint);
1690 XSetWMHints(xw.dpy, xw.win, h);
1691 XFree(h);
1692 }
1693
1694 void
1695 xbell(void)
1696 {
1697 if (!(IS_SET(MODE_FOCUSED)))
1698 xseturgency(1);
1699 if (bellvolume)
1700 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1701 }
1702
1703 void
1704 focus(XEvent *ev)
1705 {
1706 XFocusChangeEvent *e = &ev->xfocus;
1707
1708 if (e->mode == NotifyGrab)
1709 return;
1710
1711 if (ev->type == FocusIn) {
1712 if (xw.ime.xic)
1713 XSetICFocus(xw.ime.xic);
1714 win.mode |= MODE_FOCUSED;
1715 xseturgency(0);
1716 if (IS_SET(MODE_FOCUS))
1717 ttywrite("\033[I", 3, 0);
1718 } else {
1719 if (xw.ime.xic)
1720 XUnsetICFocus(xw.ime.xic);
1721 win.mode &= ~MODE_FOCUSED;
1722 if (IS_SET(MODE_FOCUS))
1723 ttywrite("\033[O", 3, 0);
1724 }
1725 }
1726
1727 int
1728 match(uint mask, uint state)
1729 {
1730 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1731 }
1732
1733 char*
1734 kmap(KeySym k, uint state)
1735 {
1736 Key *kp;
1737 int i;
1738
1739 /* Check for mapped keys out of X11 function keys. */
1740 for (i = 0; i < LEN(mappedkeys); i++) {
1741 if (mappedkeys[i] == k)
1742 break;
1743 }
1744 if (i == LEN(mappedkeys)) {
1745 if ((k & 0xFFFF) < 0xFD00)
1746 return NULL;
1747 }
1748
1749 for (kp = key; kp < key + LEN(key); kp++) {
1750 if (kp->k != k)
1751 continue;
1752
1753 if (!match(kp->mask, state))
1754 continue;
1755
1756 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1757 continue;
1758 if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
1759 continue;
1760
1761 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1762 continue;
1763
1764 return kp->s;
1765 }
1766
1767 return NULL;
1768 }
1769
1770 void
1771 kpress(XEvent *ev)
1772 {
1773 XKeyEvent *e = &ev->xkey;
1774 KeySym ksym;
1775 char buf[64], *customkey;
1776 int len;
1777 Rune c;
1778 Status status;
1779 Shortcut *bp;
1780
1781 if (IS_SET(MODE_KBDLOCK))
1782 return;
1783
1784 if (xw.ime.xic)
1785 len = XmbLookupString(xw.ime.xic, e, buf, sizeof buf, &ksym, &status);
1786 else
1787 len = XLookupString(e, buf, sizeof buf, &ksym, NULL);
1788 /* 1. shortcuts */
1789 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
1790 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1791 bp->func(&(bp->arg));
1792 return;
1793 }
1794 }
1795
1796 /* 2. custom keys from config.h */
1797 if ((customkey = kmap(ksym, e->state))) {
1798 ttywrite(customkey, strlen(customkey), 1);
1799 return;
1800 }
1801
1802 /* 3. composed string from input method */
1803 if (len == 0)
1804 return;
1805 if (len == 1 && e->state & Mod1Mask) {
1806 if (IS_SET(MODE_8BIT)) {
1807 if (*buf < 0177) {
1808 c = *buf | 0x80;
1809 len = utf8encode(c, buf);
1810 }
1811 } else {
1812 buf[1] = buf[0];
1813 buf[0] = '\033';
1814 len = 2;
1815 }
1816 }
1817 ttywrite(buf, len, 1);
1818 }
1819
1820 void
1821 cmessage(XEvent *e)
1822 {
1823 /*
1824 * See xembed specs
1825 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1826 */
1827 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1828 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1829 win.mode |= MODE_FOCUSED;
1830 xseturgency(0);
1831 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1832 win.mode &= ~MODE_FOCUSED;
1833 }
1834 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1835 ttyhangup();
1836 exit(0);
1837 }
1838 }
1839
1840 void
1841 resize(XEvent *e)
1842 {
1843 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1844 return;
1845
1846 cresize(e->xconfigure.width, e->xconfigure.height);
1847 }
1848
1849 void
1850 run(void)
1851 {
1852 XEvent ev;
1853 int w = win.w, h = win.h;
1854 fd_set rfd;
1855 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
1856 int ttyfd;
1857 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
1858 long deltatime;
1859
1860 /* Waiting for window mapping */
1861 do {
1862 XNextEvent(xw.dpy, &ev);
1863 /*
1864 * This XFilterEvent call is required because of XOpenIM. It
1865 * does filter out the key event and some client message for
1866 * the input method too.
1867 */
1868 if (XFilterEvent(&ev, None))
1869 continue;
1870 if (ev.type == ConfigureNotify) {
1871 w = ev.xconfigure.width;
1872 h = ev.xconfigure.height;
1873 }
1874 } while (ev.type != MapNotify);
1875
1876 ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
1877 cresize(w, h);
1878
1879 clock_gettime(CLOCK_MONOTONIC, &last);
1880 lastblink = last;
1881
1882 for (xev = actionfps;;) {
1883 FD_ZERO(&rfd);
1884 FD_SET(ttyfd, &rfd);
1885 FD_SET(xfd, &rfd);
1886
1887 if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1888 if (errno == EINTR)
1889 continue;
1890 die("select failed: %s\n", strerror(errno));
1891 }
1892 if (FD_ISSET(ttyfd, &rfd)) {
1893 ttyread();
1894 if (blinktimeout) {
1895 blinkset = tattrset(ATTR_BLINK);
1896 if (!blinkset)
1897 MODBIT(win.mode, 0, MODE_BLINK);
1898 }
1899 }
1900
1901 if (FD_ISSET(xfd, &rfd))
1902 xev = actionfps;
1903
1904 clock_gettime(CLOCK_MONOTONIC, &now);
1905 drawtimeout.tv_sec = 0;
1906 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
1907 tv = &drawtimeout;
1908
1909 dodraw = 0;
1910 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
1911 tsetdirtattr(ATTR_BLINK);
1912 win.mode ^= MODE_BLINK;
1913 lastblink = now;
1914 dodraw = 1;
1915 }
1916 deltatime = TIMEDIFF(now, last);
1917 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
1918 dodraw = 1;
1919 last = now;
1920 }
1921
1922 if (dodraw) {
1923 while (XPending(xw.dpy)) {
1924 XNextEvent(xw.dpy, &ev);
1925 if (XFilterEvent(&ev, None))
1926 continue;
1927 if (handler[ev.type])
1928 (handler[ev.type])(&ev);
1929 }
1930
1931 draw();
1932 XFlush(xw.dpy);
1933
1934 if (xev && !FD_ISSET(xfd, &rfd))
1935 xev--;
1936 if (!FD_ISSET(ttyfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
1937 if (blinkset) {
1938 if (TIMEDIFF(now, lastblink) \
1939 > blinktimeout) {
1940 drawtimeout.tv_nsec = 1000;
1941 } else {
1942 drawtimeout.tv_nsec = (1E6 * \
1943 (blinktimeout - \
1944 TIMEDIFF(now,
1945 lastblink)));
1946 }
1947 drawtimeout.tv_sec = \
1948 drawtimeout.tv_nsec / 1E9;
1949 drawtimeout.tv_nsec %= (long)1E9;
1950 } else {
1951 tv = NULL;
1952 }
1953 }
1954 }
1955 }
1956 }
1957
1958 void
1959 usage(void)
1960 {
1961 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
1962 " [-n name] [-o file]\n"
1963 " [-T title] [-t title] [-w windowid]"
1964 " [[-e] command [args ...]]\n"
1965 " %s [-aiv] [-c class] [-f font] [-g geometry]"
1966 " [-n name] [-o file]\n"
1967 " [-T title] [-t title] [-w windowid] -l line"
1968 " [stty_args ...]\n", argv0, argv0);
1969 }
1970
1971 int
1972 main(int argc, char *argv[])
1973 {
1974 xw.l = xw.t = 0;
1975 xw.isfixed = False;
1976 win.cursor = cursorshape;
1977
1978 ARGBEGIN {
1979 case 'a':
1980 allowaltscreen = 0;
1981 break;
1982 case 'c':
1983 opt_class = EARGF(usage());
1984 break;
1985 case 'e':
1986 if (argc > 0)
1987 --argc, ++argv;
1988 goto run;
1989 case 'f':
1990 opt_font = EARGF(usage());
1991 break;
1992 case 'g':
1993 xw.gm = XParseGeometry(EARGF(usage()),
1994 &xw.l, &xw.t, &cols, &rows);
1995 break;
1996 case 'i':
1997 xw.isfixed = 1;
1998 break;
1999 case 'o':
2000 opt_io = EARGF(usage());
2001 break;
2002 case 'l':
2003 opt_line = EARGF(usage());
2004 break;
2005 case 'n':
2006 opt_name = EARGF(usage());
2007 break;
2008 case 't':
2009 case 'T':
2010 opt_title = EARGF(usage());
2011 break;
2012 case 'w':
2013 opt_embed = EARGF(usage());
2014 break;
2015 case 'v':
2016 die("%s " VERSION "\n", argv0);
2017 break;
2018 default:
2019 usage();
2020 } ARGEND;
2021
2022 run:
2023 if (argc > 0) /* eat all remaining arguments */
2024 opt_cmd = argv;
2025
2026 if (!opt_title)
2027 opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];
2028
2029 setlocale(LC_CTYPE, "");
2030 XSetLocaleModifiers("");
2031 cols = MAX(cols, 1);
2032 rows = MAX(rows, 1);
2033 tnew(cols, rows);
2034 xinit(cols, rows);
2035 xsetenv();
2036 selinit();
2037 run();
2038
2039 return 0;
2040 }