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2cd76d02b8f1531f6ab78eddabc2c53016d50efd
[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 b;
33 uint mask;
34 char *s;
35 } MouseShortcut;
36
37 typedef struct {
38 KeySym k;
39 uint mask;
40 char *s;
41 /* three-valued logic variables: 0 indifferent, 1 on, -1 off */
42 signed char appkey; /* application keypad */
43 signed char appcursor; /* application cursor */
44 } Key;
45
46 /* X modifiers */
47 #define XK_ANY_MOD UINT_MAX
48 #define XK_NO_MOD 0
49 #define XK_SWITCH_MOD (1<<13)
50
51 /* function definitions used in config.h */
52 static void clipcopy(const Arg *);
53 static void clippaste(const Arg *);
54 static void numlock(const Arg *);
55 static void selpaste(const Arg *);
56 static void zoom(const Arg *);
57 static void zoomabs(const Arg *);
58 static void zoomreset(const Arg *);
59
60 /* config.h for applying patches and the configuration. */
61 #include "config.h"
62
63 /* XEMBED messages */
64 #define XEMBED_FOCUS_IN 4
65 #define XEMBED_FOCUS_OUT 5
66
67 /* macros */
68 #define IS_SET(flag) ((win.mode & (flag)) != 0)
69 #define TRUERED(x) (((x) & 0xff0000) >> 8)
70 #define TRUEGREEN(x) (((x) & 0xff00))
71 #define TRUEBLUE(x) (((x) & 0xff) << 8)
72
73 typedef XftDraw *Draw;
74 typedef XftColor Color;
75 typedef XftGlyphFontSpec GlyphFontSpec;
76
77 /* Purely graphic info */
78 typedef struct {
79 int tw, th; /* tty width and height */
80 int w, h; /* window width and height */
81 int ch; /* char height */
82 int cw; /* char width */
83 int mode; /* window state/mode flags */
84 int cursor; /* cursor style */
85 } TermWindow;
86
87 typedef struct {
88 Display *dpy;
89 Colormap cmap;
90 Window win;
91 Drawable buf;
92 GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
93 Atom xembed, wmdeletewin, netwmname, netwmpid;
94 XIM xim;
95 XIC xic;
96 Draw draw;
97 Visual *vis;
98 XSetWindowAttributes attrs;
99 int scr;
100 int isfixed; /* is fixed geometry? */
101 int l, t; /* left and top offset */
102 int gm; /* geometry mask */
103 } XWindow;
104
105 typedef struct {
106 Atom xtarget;
107 char *primary, *clipboard;
108 struct timespec tclick1;
109 struct timespec tclick2;
110 } XSelection;
111
112 /* Font structure */
113 #define Font Font_
114 typedef struct {
115 int height;
116 int width;
117 int ascent;
118 int descent;
119 int badslant;
120 int badweight;
121 short lbearing;
122 short rbearing;
123 XftFont *match;
124 FcFontSet *set;
125 FcPattern *pattern;
126 } Font;
127
128 /* Drawing Context */
129 typedef struct {
130 Color *col;
131 size_t collen;
132 Font font, bfont, ifont, ibfont;
133 GC gc;
134 } DC;
135
136 static inline ushort sixd_to_16bit(int);
137 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
138 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
139 static void xdrawglyph(Glyph, int, int);
140 static void xclear(int, int, int, int);
141 static int xgeommasktogravity(int);
142 static void ximopen(Display *);
143 static void ximinstantiate(Display *, XPointer, XPointer);
144 static void ximdestroy(XIM, XPointer, XPointer);
145 static void xinit(int, int);
146 static void cresize(int, int);
147 static void xresize(int, int);
148 static void xhints(void);
149 static int xloadcolor(int, const char *, Color *);
150 static int xloadfont(Font *, FcPattern *);
151 static void xloadfonts(char *, double);
152 static void xunloadfont(Font *);
153 static void xunloadfonts(void);
154 static void xsetenv(void);
155 static void xseturgency(int);
156 static int evcol(XEvent *);
157 static int evrow(XEvent *);
158
159 static void expose(XEvent *);
160 static void visibility(XEvent *);
161 static void unmap(XEvent *);
162 static void kpress(XEvent *);
163 static void cmessage(XEvent *);
164 static void resize(XEvent *);
165 static void focus(XEvent *);
166 static void brelease(XEvent *);
167 static void bpress(XEvent *);
168 static void bmotion(XEvent *);
169 static void propnotify(XEvent *);
170 static void selnotify(XEvent *);
171 static void selclear_(XEvent *);
172 static void selrequest(XEvent *);
173 static void setsel(char *, Time);
174 static void mousesel(XEvent *, int);
175 static void mousereport(XEvent *);
176 static char *kmap(KeySym, uint);
177 static int match(uint, uint);
178
179 static void run(void);
180 static void usage(void);
181
182 static void (*handler[LASTEvent])(XEvent *) = {
183 [KeyPress] = kpress,
184 [ClientMessage] = cmessage,
185 [ConfigureNotify] = resize,
186 [VisibilityNotify] = visibility,
187 [UnmapNotify] = unmap,
188 [Expose] = expose,
189 [FocusIn] = focus,
190 [FocusOut] = focus,
191 [MotionNotify] = bmotion,
192 [ButtonPress] = bpress,
193 [ButtonRelease] = brelease,
194 /*
195 * Uncomment if you want the selection to disappear when you select something
196 * different in another window.
197 */
198 /* [SelectionClear] = selclear_, */
199 [SelectionNotify] = selnotify,
200 /*
201 * PropertyNotify is only turned on when there is some INCR transfer happening
202 * for the selection retrieval.
203 */
204 [PropertyNotify] = propnotify,
205 [SelectionRequest] = selrequest,
206 };
207
208 /* Globals */
209 static DC dc;
210 static XWindow xw;
211 static XSelection xsel;
212 static TermWindow win;
213
214 /* Font Ring Cache */
215 enum {
216 FRC_NORMAL,
217 FRC_ITALIC,
218 FRC_BOLD,
219 FRC_ITALICBOLD
220 };
221
222 typedef struct {
223 XftFont *font;
224 int flags;
225 Rune unicodep;
226 } Fontcache;
227
228 /* Fontcache is an array now. A new font will be appended to the array. */
229 static Fontcache *frc = NULL;
230 static int frclen = 0;
231 static int frccap = 0;
232 static char *usedfont = NULL;
233 static double usedfontsize = 0;
234 static double defaultfontsize = 0;
235
236 static char *opt_class = NULL;
237 static char **opt_cmd = NULL;
238 static char *opt_embed = NULL;
239 static char *opt_font = NULL;
240 static char *opt_io = NULL;
241 static char *opt_line = NULL;
242 static char *opt_name = NULL;
243 static char *opt_title = NULL;
244
245 static int oldbutton = 3; /* button event on startup: 3 = release */
246
247 void
248 clipcopy(const Arg *dummy)
249 {
250 Atom clipboard;
251
252 free(xsel.clipboard);
253 xsel.clipboard = NULL;
254
255 if (xsel.primary != NULL) {
256 xsel.clipboard = xstrdup(xsel.primary);
257 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
258 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
259 }
260 }
261
262 void
263 clippaste(const Arg *dummy)
264 {
265 Atom clipboard;
266
267 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
268 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
269 xw.win, CurrentTime);
270 }
271
272 void
273 selpaste(const Arg *dummy)
274 {
275 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
276 xw.win, CurrentTime);
277 }
278
279 void
280 numlock(const Arg *dummy)
281 {
282 win.mode ^= MODE_NUMLOCK;
283 }
284
285 void
286 zoom(const Arg *arg)
287 {
288 Arg larg;
289
290 larg.f = usedfontsize + arg->f;
291 zoomabs(&larg);
292 }
293
294 void
295 zoomabs(const Arg *arg)
296 {
297 xunloadfonts();
298 xloadfonts(usedfont, arg->f);
299 cresize(0, 0);
300 redraw();
301 xhints();
302 }
303
304 void
305 zoomreset(const Arg *arg)
306 {
307 Arg larg;
308
309 if (defaultfontsize > 0) {
310 larg.f = defaultfontsize;
311 zoomabs(&larg);
312 }
313 }
314
315 int
316 evcol(XEvent *e)
317 {
318 int x = e->xbutton.x - borderpx;
319 LIMIT(x, 0, win.tw - 1);
320 return x / win.cw;
321 }
322
323 int
324 evrow(XEvent *e)
325 {
326 int y = e->xbutton.y - borderpx;
327 LIMIT(y, 0, win.th - 1);
328 return y / win.ch;
329 }
330
331 void
332 mousesel(XEvent *e, int done)
333 {
334 int type, seltype = SEL_REGULAR;
335 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
336
337 for (type = 1; type < LEN(selmasks); ++type) {
338 if (match(selmasks[type], state)) {
339 seltype = type;
340 break;
341 }
342 }
343 selextend(evcol(e), evrow(e), seltype, done);
344 if (done)
345 setsel(getsel(), e->xbutton.time);
346 }
347
348 void
349 mousereport(XEvent *e)
350 {
351 int len, x = evcol(e), y = evrow(e),
352 button = e->xbutton.button, state = e->xbutton.state;
353 char buf[40];
354 static int ox, oy;
355
356 /* from urxvt */
357 if (e->xbutton.type == MotionNotify) {
358 if (x == ox && y == oy)
359 return;
360 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
361 return;
362 /* MOUSE_MOTION: no reporting if no button is pressed */
363 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
364 return;
365
366 button = oldbutton + 32;
367 ox = x;
368 oy = y;
369 } else {
370 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
371 button = 3;
372 } else {
373 button -= Button1;
374 if (button >= 3)
375 button += 64 - 3;
376 }
377 if (e->xbutton.type == ButtonPress) {
378 oldbutton = button;
379 ox = x;
380 oy = y;
381 } else if (e->xbutton.type == ButtonRelease) {
382 oldbutton = 3;
383 /* MODE_MOUSEX10: no button release reporting */
384 if (IS_SET(MODE_MOUSEX10))
385 return;
386 if (button == 64 || button == 65)
387 return;
388 }
389 }
390
391 if (!IS_SET(MODE_MOUSEX10)) {
392 button += ((state & ShiftMask ) ? 4 : 0)
393 + ((state & Mod4Mask ) ? 8 : 0)
394 + ((state & ControlMask) ? 16 : 0);
395 }
396
397 if (IS_SET(MODE_MOUSESGR)) {
398 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
399 button, x+1, y+1,
400 e->xbutton.type == ButtonRelease ? 'm' : 'M');
401 } else if (x < 223 && y < 223) {
402 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
403 32+button, 32+x+1, 32+y+1);
404 } else {
405 return;
406 }
407
408 ttywrite(buf, len, 0);
409 }
410
411 void
412 bpress(XEvent *e)
413 {
414 struct timespec now;
415 MouseShortcut *ms;
416 int snap;
417
418 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
419 mousereport(e);
420 return;
421 }
422
423 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
424 if (e->xbutton.button == ms->b
425 && match(ms->mask, e->xbutton.state)) {
426 ttywrite(ms->s, strlen(ms->s), 1);
427 return;
428 }
429 }
430
431 if (e->xbutton.button == Button1) {
432 /*
433 * If the user clicks below predefined timeouts specific
434 * snapping behaviour is exposed.
435 */
436 clock_gettime(CLOCK_MONOTONIC, &now);
437 if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
438 snap = SNAP_LINE;
439 } else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
440 snap = SNAP_WORD;
441 } else {
442 snap = 0;
443 }
444 xsel.tclick2 = xsel.tclick1;
445 xsel.tclick1 = now;
446
447 selstart(evcol(e), evrow(e), snap);
448 }
449 }
450
451 void
452 propnotify(XEvent *e)
453 {
454 XPropertyEvent *xpev;
455 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
456
457 xpev = &e->xproperty;
458 if (xpev->state == PropertyNewValue &&
459 (xpev->atom == XA_PRIMARY ||
460 xpev->atom == clipboard)) {
461 selnotify(e);
462 }
463 }
464
465 void
466 selnotify(XEvent *e)
467 {
468 ulong nitems, ofs, rem;
469 int format;
470 uchar *data, *last, *repl;
471 Atom type, incratom, property = None;
472
473 incratom = XInternAtom(xw.dpy, "INCR", 0);
474
475 ofs = 0;
476 if (e->type == SelectionNotify)
477 property = e->xselection.property;
478 else if (e->type == PropertyNotify)
479 property = e->xproperty.atom;
480
481 if (property == None)
482 return;
483
484 do {
485 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
486 BUFSIZ/4, False, AnyPropertyType,
487 &type, &format, &nitems, &rem,
488 &data)) {
489 fprintf(stderr, "Clipboard allocation failed\n");
490 return;
491 }
492
493 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
494 /*
495 * If there is some PropertyNotify with no data, then
496 * this is the signal of the selection owner that all
497 * data has been transferred. We won't need to receive
498 * PropertyNotify events anymore.
499 */
500 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
501 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
502 &xw.attrs);
503 }
504
505 if (type == incratom) {
506 /*
507 * Activate the PropertyNotify events so we receive
508 * when the selection owner does send us the next
509 * chunk of data.
510 */
511 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
512 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
513 &xw.attrs);
514
515 /*
516 * Deleting the property is the transfer start signal.
517 */
518 XDeleteProperty(xw.dpy, xw.win, (int)property);
519 continue;
520 }
521
522 /*
523 * As seen in getsel:
524 * Line endings are inconsistent in the terminal and GUI world
525 * copy and pasting. When receiving some selection data,
526 * replace all '\n' with '\r'.
527 * FIXME: Fix the computer world.
528 */
529 repl = data;
530 last = data + nitems * format / 8;
531 while ((repl = memchr(repl, '\n', last - repl))) {
532 *repl++ = '\r';
533 }
534
535 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
536 ttywrite("\033[200~", 6, 0);
537 ttywrite((char *)data, nitems * format / 8, 1);
538 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
539 ttywrite("\033[201~", 6, 0);
540 XFree(data);
541 /* number of 32-bit chunks returned */
542 ofs += nitems * format / 32;
543 } while (rem > 0);
544
545 /*
546 * Deleting the property again tells the selection owner to send the
547 * next data chunk in the property.
548 */
549 XDeleteProperty(xw.dpy, xw.win, (int)property);
550 }
551
552 void
553 xclipcopy(void)
554 {
555 clipcopy(NULL);
556 }
557
558 void
559 selclear_(XEvent *e)
560 {
561 selclear();
562 }
563
564 void
565 selrequest(XEvent *e)
566 {
567 XSelectionRequestEvent *xsre;
568 XSelectionEvent xev;
569 Atom xa_targets, string, clipboard;
570 char *seltext;
571
572 xsre = (XSelectionRequestEvent *) e;
573 xev.type = SelectionNotify;
574 xev.requestor = xsre->requestor;
575 xev.selection = xsre->selection;
576 xev.target = xsre->target;
577 xev.time = xsre->time;
578 if (xsre->property == None)
579 xsre->property = xsre->target;
580
581 /* reject */
582 xev.property = None;
583
584 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
585 if (xsre->target == xa_targets) {
586 /* respond with the supported type */
587 string = xsel.xtarget;
588 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
589 XA_ATOM, 32, PropModeReplace,
590 (uchar *) &string, 1);
591 xev.property = xsre->property;
592 } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
593 /*
594 * xith XA_STRING non ascii characters may be incorrect in the
595 * requestor. It is not our problem, use utf8.
596 */
597 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
598 if (xsre->selection == XA_PRIMARY) {
599 seltext = xsel.primary;
600 } else if (xsre->selection == clipboard) {
601 seltext = xsel.clipboard;
602 } else {
603 fprintf(stderr,
604 "Unhandled clipboard selection 0x%lx\n",
605 xsre->selection);
606 return;
607 }
608 if (seltext != NULL) {
609 XChangeProperty(xsre->display, xsre->requestor,
610 xsre->property, xsre->target,
611 8, PropModeReplace,
612 (uchar *)seltext, strlen(seltext));
613 xev.property = xsre->property;
614 }
615 }
616
617 /* all done, send a notification to the listener */
618 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
619 fprintf(stderr, "Error sending SelectionNotify event\n");
620 }
621
622 void
623 setsel(char *str, Time t)
624 {
625 if (!str)
626 return;
627
628 free(xsel.primary);
629 xsel.primary = str;
630
631 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
632 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
633 selclear();
634 }
635
636 void
637 xsetsel(char *str)
638 {
639 setsel(str, CurrentTime);
640 }
641
642 void
643 brelease(XEvent *e)
644 {
645 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
646 mousereport(e);
647 return;
648 }
649
650 if (e->xbutton.button == Button2)
651 selpaste(NULL);
652 else if (e->xbutton.button == Button1)
653 mousesel(e, 1);
654 }
655
656 void
657 bmotion(XEvent *e)
658 {
659 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
660 mousereport(e);
661 return;
662 }
663
664 mousesel(e, 0);
665 }
666
667 void
668 cresize(int width, int height)
669 {
670 int col, row;
671
672 if (width != 0)
673 win.w = width;
674 if (height != 0)
675 win.h = height;
676
677 col = (win.w - 2 * borderpx) / win.cw;
678 row = (win.h - 2 * borderpx) / win.ch;
679 col = MAX(1, col);
680 row = MAX(1, row);
681
682 tresize(col, row);
683 xresize(col, row);
684 ttyresize(win.tw, win.th);
685 }
686
687 void
688 xresize(int col, int row)
689 {
690 win.tw = col * win.cw;
691 win.th = row * win.ch;
692
693 XFreePixmap(xw.dpy, xw.buf);
694 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
695 DefaultDepth(xw.dpy, xw.scr));
696 XftDrawChange(xw.draw, xw.buf);
697 xclear(0, 0, win.w, win.h);
698
699 /* resize to new width */
700 xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
701 }
702
703 ushort
704 sixd_to_16bit(int x)
705 {
706 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
707 }
708
709 int
710 xloadcolor(int i, const char *name, Color *ncolor)
711 {
712 XRenderColor color = { .alpha = 0xffff };
713
714 if (!name) {
715 if (BETWEEN(i, 16, 255)) { /* 256 color */
716 if (i < 6*6*6+16) { /* same colors as xterm */
717 color.red = sixd_to_16bit( ((i-16)/36)%6 );
718 color.green = sixd_to_16bit( ((i-16)/6) %6 );
719 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
720 } else { /* greyscale */
721 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
722 color.green = color.blue = color.red;
723 }
724 return XftColorAllocValue(xw.dpy, xw.vis,
725 xw.cmap, &color, ncolor);
726 } else
727 name = colorname[i];
728 }
729
730 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
731 }
732
733 void
734 xloadcols(void)
735 {
736 int i;
737 static int loaded;
738 Color *cp;
739
740 if (loaded) {
741 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
742 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
743 } else {
744 dc.collen = MAX(LEN(colorname), 256);
745 dc.col = xmalloc(dc.collen * sizeof(Color));
746 }
747
748 for (i = 0; i < dc.collen; i++)
749 if (!xloadcolor(i, NULL, &dc.col[i])) {
750 if (colorname[i])
751 die("could not allocate color '%s'\n", colorname[i]);
752 else
753 die("could not allocate color %d\n", i);
754 }
755 loaded = 1;
756 }
757
758 int
759 xsetcolorname(int x, const char *name)
760 {
761 Color ncolor;
762
763 if (!BETWEEN(x, 0, dc.collen))
764 return 1;
765
766
767 if (!xloadcolor(x, name, &ncolor))
768 return 1;
769
770 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
771 dc.col[x] = ncolor;
772
773 return 0;
774 }
775
776 /*
777 * Absolute coordinates.
778 */
779 void
780 xclear(int x1, int y1, int x2, int y2)
781 {
782 XftDrawRect(xw.draw,
783 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
784 x1, y1, x2-x1, y2-y1);
785 }
786
787 void
788 xhints(void)
789 {
790 XClassHint class = {opt_name ? opt_name : termname,
791 opt_class ? opt_class : termname};
792 XWMHints wm = {.flags = InputHint, .input = 1};
793 XSizeHints *sizeh;
794
795 sizeh = XAllocSizeHints();
796
797 sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
798 sizeh->height = win.h;
799 sizeh->width = win.w;
800 sizeh->height_inc = win.ch;
801 sizeh->width_inc = win.cw;
802 sizeh->base_height = 2 * borderpx;
803 sizeh->base_width = 2 * borderpx;
804 sizeh->min_height = win.ch + 2 * borderpx;
805 sizeh->min_width = win.cw + 2 * borderpx;
806 if (xw.isfixed) {
807 sizeh->flags |= PMaxSize;
808 sizeh->min_width = sizeh->max_width = win.w;
809 sizeh->min_height = sizeh->max_height = win.h;
810 }
811 if (xw.gm & (XValue|YValue)) {
812 sizeh->flags |= USPosition | PWinGravity;
813 sizeh->x = xw.l;
814 sizeh->y = xw.t;
815 sizeh->win_gravity = xgeommasktogravity(xw.gm);
816 }
817
818 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
819 &class);
820 XFree(sizeh);
821 }
822
823 int
824 xgeommasktogravity(int mask)
825 {
826 switch (mask & (XNegative|YNegative)) {
827 case 0:
828 return NorthWestGravity;
829 case XNegative:
830 return NorthEastGravity;
831 case YNegative:
832 return SouthWestGravity;
833 }
834
835 return SouthEastGravity;
836 }
837
838 int
839 xloadfont(Font *f, FcPattern *pattern)
840 {
841 FcPattern *configured;
842 FcPattern *match;
843 FcResult result;
844 XGlyphInfo extents;
845 int wantattr, haveattr;
846
847 /*
848 * Manually configure instead of calling XftMatchFont
849 * so that we can use the configured pattern for
850 * "missing glyph" lookups.
851 */
852 configured = FcPatternDuplicate(pattern);
853 if (!configured)
854 return 1;
855
856 FcConfigSubstitute(NULL, configured, FcMatchPattern);
857 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
858
859 match = FcFontMatch(NULL, configured, &result);
860 if (!match) {
861 FcPatternDestroy(configured);
862 return 1;
863 }
864
865 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
866 FcPatternDestroy(configured);
867 FcPatternDestroy(match);
868 return 1;
869 }
870
871 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
872 XftResultMatch)) {
873 /*
874 * Check if xft was unable to find a font with the appropriate
875 * slant but gave us one anyway. Try to mitigate.
876 */
877 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
878 &haveattr) != XftResultMatch) || haveattr < wantattr) {
879 f->badslant = 1;
880 fputs("font slant does not match\n", stderr);
881 }
882 }
883
884 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
885 XftResultMatch)) {
886 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
887 &haveattr) != XftResultMatch) || haveattr != wantattr) {
888 f->badweight = 1;
889 fputs("font weight does not match\n", stderr);
890 }
891 }
892
893 XftTextExtentsUtf8(xw.dpy, f->match,
894 (const FcChar8 *) ascii_printable,
895 strlen(ascii_printable), &extents);
896
897 f->set = NULL;
898 f->pattern = configured;
899
900 f->ascent = f->match->ascent;
901 f->descent = f->match->descent;
902 f->lbearing = 0;
903 f->rbearing = f->match->max_advance_width;
904
905 f->height = f->ascent + f->descent;
906 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
907
908 return 0;
909 }
910
911 void
912 xloadfonts(char *fontstr, double fontsize)
913 {
914 FcPattern *pattern;
915 double fontval;
916
917 if (fontstr[0] == '-')
918 pattern = XftXlfdParse(fontstr, False, False);
919 else
920 pattern = FcNameParse((FcChar8 *)fontstr);
921
922 if (!pattern)
923 die("can't open font %s\n", fontstr);
924
925 if (fontsize > 1) {
926 FcPatternDel(pattern, FC_PIXEL_SIZE);
927 FcPatternDel(pattern, FC_SIZE);
928 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
929 usedfontsize = fontsize;
930 } else {
931 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
932 FcResultMatch) {
933 usedfontsize = fontval;
934 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
935 FcResultMatch) {
936 usedfontsize = -1;
937 } else {
938 /*
939 * Default font size is 12, if none given. This is to
940 * have a known usedfontsize value.
941 */
942 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
943 usedfontsize = 12;
944 }
945 defaultfontsize = usedfontsize;
946 }
947
948 if (xloadfont(&dc.font, pattern))
949 die("can't open font %s\n", fontstr);
950
951 if (usedfontsize < 0) {
952 FcPatternGetDouble(dc.font.match->pattern,
953 FC_PIXEL_SIZE, 0, &fontval);
954 usedfontsize = fontval;
955 if (fontsize == 0)
956 defaultfontsize = fontval;
957 }
958
959 /* Setting character width and height. */
960 win.cw = ceilf(dc.font.width * cwscale);
961 win.ch = ceilf(dc.font.height * chscale);
962
963 FcPatternDel(pattern, FC_SLANT);
964 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
965 if (xloadfont(&dc.ifont, pattern))
966 die("can't open font %s\n", fontstr);
967
968 FcPatternDel(pattern, FC_WEIGHT);
969 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
970 if (xloadfont(&dc.ibfont, pattern))
971 die("can't open font %s\n", fontstr);
972
973 FcPatternDel(pattern, FC_SLANT);
974 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
975 if (xloadfont(&dc.bfont, pattern))
976 die("can't open font %s\n", fontstr);
977
978 FcPatternDestroy(pattern);
979 }
980
981 void
982 xunloadfont(Font *f)
983 {
984 XftFontClose(xw.dpy, f->match);
985 FcPatternDestroy(f->pattern);
986 if (f->set)
987 FcFontSetDestroy(f->set);
988 }
989
990 void
991 xunloadfonts(void)
992 {
993 /* Free the loaded fonts in the font cache. */
994 while (frclen > 0)
995 XftFontClose(xw.dpy, frc[--frclen].font);
996
997 xunloadfont(&dc.font);
998 xunloadfont(&dc.bfont);
999 xunloadfont(&dc.ifont);
1000 xunloadfont(&dc.ibfont);
1001 }
1002
1003 void
1004 ximopen(Display *dpy)
1005 {
1006 XIMCallback destroy = { .client_data = NULL, .callback = ximdestroy };
1007
1008 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1009 XSetLocaleModifiers("@im=local");
1010 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1011 XSetLocaleModifiers("@im=");
1012 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL)
1013 die("XOpenIM failed. Could not open input device.\n");
1014 }
1015 }
1016 if (XSetIMValues(xw.xim, XNDestroyCallback, &destroy, NULL) != NULL)
1017 die("XSetIMValues failed. Could not set input method value.\n");
1018 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
1019 XNClientWindow, xw.win, XNFocusWindow, xw.win, NULL);
1020 if (xw.xic == NULL)
1021 die("XCreateIC failed. Could not obtain input method.\n");
1022 }
1023
1024 void
1025 ximinstantiate(Display *dpy, XPointer client, XPointer call)
1026 {
1027 ximopen(dpy);
1028 XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1029 ximinstantiate, NULL);
1030 }
1031
1032 void
1033 ximdestroy(XIM xim, XPointer client, XPointer call)
1034 {
1035 xw.xim = NULL;
1036 XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1037 ximinstantiate, NULL);
1038 }
1039
1040 void
1041 xinit(int cols, int rows)
1042 {
1043 XGCValues gcvalues;
1044 Cursor cursor;
1045 Window parent;
1046 pid_t thispid = getpid();
1047 XColor xmousefg, xmousebg;
1048
1049 if (!(xw.dpy = XOpenDisplay(NULL)))
1050 die("can't open display\n");
1051 xw.scr = XDefaultScreen(xw.dpy);
1052 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
1053
1054 /* font */
1055 if (!FcInit())
1056 die("could not init fontconfig.\n");
1057
1058 usedfont = (opt_font == NULL)? font : opt_font;
1059 xloadfonts(usedfont, 0);
1060
1061 /* colors */
1062 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1063 xloadcols();
1064
1065 /* adjust fixed window geometry */
1066 win.w = 2 * borderpx + cols * win.cw;
1067 win.h = 2 * borderpx + rows * win.ch;
1068 if (xw.gm & XNegative)
1069 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
1070 if (xw.gm & YNegative)
1071 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
1072
1073 /* Events */
1074 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
1075 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
1076 xw.attrs.bit_gravity = NorthWestGravity;
1077 xw.attrs.event_mask = FocusChangeMask | KeyPressMask | KeyReleaseMask
1078 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1079 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
1080 xw.attrs.colormap = xw.cmap;
1081
1082 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
1083 parent = XRootWindow(xw.dpy, xw.scr);
1084 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
1085 win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1086 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
1087 | CWEventMask | CWColormap, &xw.attrs);
1088
1089 memset(&gcvalues, 0, sizeof(gcvalues));
1090 gcvalues.graphics_exposures = False;
1091 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
1092 &gcvalues);
1093 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
1094 DefaultDepth(xw.dpy, xw.scr));
1095 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
1096 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
1097
1098 /* font spec buffer */
1099 xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
1100
1101 /* Xft rendering context */
1102 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
1103
1104 /* input methods */
1105 ximopen(xw.dpy);
1106
1107 /* white cursor, black outline */
1108 cursor = XCreateFontCursor(xw.dpy, mouseshape);
1109 XDefineCursor(xw.dpy, xw.win, cursor);
1110
1111 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
1112 xmousefg.red = 0xffff;
1113 xmousefg.green = 0xffff;
1114 xmousefg.blue = 0xffff;
1115 }
1116
1117 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
1118 xmousebg.red = 0x0000;
1119 xmousebg.green = 0x0000;
1120 xmousebg.blue = 0x0000;
1121 }
1122
1123 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
1124
1125 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1126 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
1127 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
1128 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
1129
1130 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
1131 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
1132 PropModeReplace, (uchar *)&thispid, 1);
1133
1134 win.mode = MODE_NUMLOCK;
1135 resettitle();
1136 XMapWindow(xw.dpy, xw.win);
1137 xhints();
1138 XSync(xw.dpy, False);
1139
1140 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
1141 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
1142 xsel.primary = NULL;
1143 xsel.clipboard = NULL;
1144 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
1145 if (xsel.xtarget == None)
1146 xsel.xtarget = XA_STRING;
1147 }
1148
1149 int
1150 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
1151 {
1152 float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
1153 ushort mode, prevmode = USHRT_MAX;
1154 Font *font = &dc.font;
1155 int frcflags = FRC_NORMAL;
1156 float runewidth = win.cw;
1157 Rune rune;
1158 FT_UInt glyphidx;
1159 FcResult fcres;
1160 FcPattern *fcpattern, *fontpattern;
1161 FcFontSet *fcsets[] = { NULL };
1162 FcCharSet *fccharset;
1163 int i, f, numspecs = 0;
1164
1165 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1166 /* Fetch rune and mode for current glyph. */
1167 rune = glyphs[i].u;
1168 mode = glyphs[i].mode;
1169
1170 /* Skip dummy wide-character spacing. */
1171 if (mode == ATTR_WDUMMY)
1172 continue;
1173
1174 /* Determine font for glyph if different from previous glyph. */
1175 if (prevmode != mode) {
1176 prevmode = mode;
1177 font = &dc.font;
1178 frcflags = FRC_NORMAL;
1179 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1180 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1181 font = &dc.ibfont;
1182 frcflags = FRC_ITALICBOLD;
1183 } else if (mode & ATTR_ITALIC) {
1184 font = &dc.ifont;
1185 frcflags = FRC_ITALIC;
1186 } else if (mode & ATTR_BOLD) {
1187 font = &dc.bfont;
1188 frcflags = FRC_BOLD;
1189 }
1190 yp = winy + font->ascent;
1191 }
1192
1193 /* Lookup character index with default font. */
1194 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1195 if (glyphidx) {
1196 specs[numspecs].font = font->match;
1197 specs[numspecs].glyph = glyphidx;
1198 specs[numspecs].x = (short)xp;
1199 specs[numspecs].y = (short)yp;
1200 xp += runewidth;
1201 numspecs++;
1202 continue;
1203 }
1204
1205 /* Fallback on font cache, search the font cache for match. */
1206 for (f = 0; f < frclen; f++) {
1207 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1208 /* Everything correct. */
1209 if (glyphidx && frc[f].flags == frcflags)
1210 break;
1211 /* We got a default font for a not found glyph. */
1212 if (!glyphidx && frc[f].flags == frcflags
1213 && frc[f].unicodep == rune) {
1214 break;
1215 }
1216 }
1217
1218 /* Nothing was found. Use fontconfig to find matching font. */
1219 if (f >= frclen) {
1220 if (!font->set)
1221 font->set = FcFontSort(0, font->pattern,
1222 1, 0, &fcres);
1223 fcsets[0] = font->set;
1224
1225 /*
1226 * Nothing was found in the cache. Now use
1227 * some dozen of Fontconfig calls to get the
1228 * font for one single character.
1229 *
1230 * Xft and fontconfig are design failures.
1231 */
1232 fcpattern = FcPatternDuplicate(font->pattern);
1233 fccharset = FcCharSetCreate();
1234
1235 FcCharSetAddChar(fccharset, rune);
1236 FcPatternAddCharSet(fcpattern, FC_CHARSET,
1237 fccharset);
1238 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1239
1240 FcConfigSubstitute(0, fcpattern,
1241 FcMatchPattern);
1242 FcDefaultSubstitute(fcpattern);
1243
1244 fontpattern = FcFontSetMatch(0, fcsets, 1,
1245 fcpattern, &fcres);
1246
1247 /*
1248 * Allocate memory for the new cache entry.
1249 */
1250 if (frclen >= frccap) {
1251 frccap += 16;
1252 if (!frc)
1253 frc = xmalloc(frccap * sizeof(Fontcache));
1254 else
1255 frc = xrealloc(frc, frccap * sizeof(Fontcache));
1256 }
1257
1258 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1259 fontpattern);
1260 if (!frc[frclen].font)
1261 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1262 strerror(errno));
1263 frc[frclen].flags = frcflags;
1264 frc[frclen].unicodep = rune;
1265
1266 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1267
1268 f = frclen;
1269 frclen++;
1270
1271 FcPatternDestroy(fcpattern);
1272 FcCharSetDestroy(fccharset);
1273 }
1274
1275 specs[numspecs].font = frc[f].font;
1276 specs[numspecs].glyph = glyphidx;
1277 specs[numspecs].x = (short)xp;
1278 specs[numspecs].y = (short)yp;
1279 xp += runewidth;
1280 numspecs++;
1281 }
1282
1283 return numspecs;
1284 }
1285
1286 void
1287 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1288 {
1289 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1290 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1291 width = charlen * win.cw;
1292 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1293 XRenderColor colfg, colbg;
1294 XRectangle r;
1295
1296 /* Fallback on color display for attributes not supported by the font */
1297 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1298 if (dc.ibfont.badslant || dc.ibfont.badweight)
1299 base.fg = defaultattr;
1300 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1301 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1302 base.fg = defaultattr;
1303 }
1304
1305 if (IS_TRUECOL(base.fg)) {
1306 colfg.alpha = 0xffff;
1307 colfg.red = TRUERED(base.fg);
1308 colfg.green = TRUEGREEN(base.fg);
1309 colfg.blue = TRUEBLUE(base.fg);
1310 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1311 fg = &truefg;
1312 } else {
1313 fg = &dc.col[base.fg];
1314 }
1315
1316 if (IS_TRUECOL(base.bg)) {
1317 colbg.alpha = 0xffff;
1318 colbg.green = TRUEGREEN(base.bg);
1319 colbg.red = TRUERED(base.bg);
1320 colbg.blue = TRUEBLUE(base.bg);
1321 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1322 bg = &truebg;
1323 } else {
1324 bg = &dc.col[base.bg];
1325 }
1326
1327 /* Change basic system colors [0-7] to bright system colors [8-15] */
1328 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1329 fg = &dc.col[base.fg + 8];
1330
1331 if (IS_SET(MODE_REVERSE)) {
1332 if (fg == &dc.col[defaultfg]) {
1333 fg = &dc.col[defaultbg];
1334 } else {
1335 colfg.red = ~fg->color.red;
1336 colfg.green = ~fg->color.green;
1337 colfg.blue = ~fg->color.blue;
1338 colfg.alpha = fg->color.alpha;
1339 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1340 &revfg);
1341 fg = &revfg;
1342 }
1343
1344 if (bg == &dc.col[defaultbg]) {
1345 bg = &dc.col[defaultfg];
1346 } else {
1347 colbg.red = ~bg->color.red;
1348 colbg.green = ~bg->color.green;
1349 colbg.blue = ~bg->color.blue;
1350 colbg.alpha = bg->color.alpha;
1351 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1352 &revbg);
1353 bg = &revbg;
1354 }
1355 }
1356
1357 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1358 colfg.red = fg->color.red / 2;
1359 colfg.green = fg->color.green / 2;
1360 colfg.blue = fg->color.blue / 2;
1361 colfg.alpha = fg->color.alpha;
1362 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1363 fg = &revfg;
1364 }
1365
1366 if (base.mode & ATTR_REVERSE) {
1367 temp = fg;
1368 fg = bg;
1369 bg = temp;
1370 }
1371
1372 if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
1373 fg = bg;
1374
1375 if (base.mode & ATTR_INVISIBLE)
1376 fg = bg;
1377
1378 /* Intelligent cleaning up of the borders. */
1379 if (x == 0) {
1380 xclear(0, (y == 0)? 0 : winy, borderpx,
1381 winy + win.ch +
1382 ((winy + win.ch >= borderpx + win.th)? win.h : 0));
1383 }
1384 if (winx + width >= borderpx + win.tw) {
1385 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1386 ((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
1387 }
1388 if (y == 0)
1389 xclear(winx, 0, winx + width, borderpx);
1390 if (winy + win.ch >= borderpx + win.th)
1391 xclear(winx, winy + win.ch, winx + width, win.h);
1392
1393 /* Clean up the region we want to draw to. */
1394 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1395
1396 /* Set the clip region because Xft is sometimes dirty. */
1397 r.x = 0;
1398 r.y = 0;
1399 r.height = win.ch;
1400 r.width = width;
1401 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1402
1403 /* Render the glyphs. */
1404 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1405
1406 /* Render underline and strikethrough. */
1407 if (base.mode & ATTR_UNDERLINE) {
1408 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
1409 width, 1);
1410 }
1411
1412 if (base.mode & ATTR_STRUCK) {
1413 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
1414 width, 1);
1415 }
1416
1417 /* Reset clip to none. */
1418 XftDrawSetClip(xw.draw, 0);
1419 }
1420
1421 void
1422 xdrawglyph(Glyph g, int x, int y)
1423 {
1424 int numspecs;
1425 XftGlyphFontSpec spec;
1426
1427 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1428 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1429 }
1430
1431 void
1432 xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
1433 {
1434 Color drawcol;
1435
1436 /* remove the old cursor */
1437 if (selected(ox, oy))
1438 og.mode ^= ATTR_REVERSE;
1439 xdrawglyph(og, ox, oy);
1440
1441 if (IS_SET(MODE_HIDE))
1442 return;
1443
1444 /*
1445 * Select the right color for the right mode.
1446 */
1447 g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
1448
1449 if (IS_SET(MODE_REVERSE)) {
1450 g.mode |= ATTR_REVERSE;
1451 g.bg = defaultfg;
1452 if (selected(cx, cy)) {
1453 drawcol = dc.col[defaultcs];
1454 g.fg = defaultrcs;
1455 } else {
1456 drawcol = dc.col[defaultrcs];
1457 g.fg = defaultcs;
1458 }
1459 } else {
1460 if (selected(cx, cy)) {
1461 g.fg = defaultfg;
1462 g.bg = defaultrcs;
1463 } else {
1464 g.fg = defaultbg;
1465 g.bg = defaultcs;
1466 }
1467 drawcol = dc.col[g.bg];
1468 }
1469
1470 /* draw the new one */
1471 if (IS_SET(MODE_FOCUSED)) {
1472 switch (win.cursor) {
1473 case 7: /* st extension: snowman (U+2603) */
1474 g.u = 0x2603;
1475 case 0: /* Blinking Block */
1476 case 1: /* Blinking Block (Default) */
1477 case 2: /* Steady Block */
1478 xdrawglyph(g, cx, cy);
1479 break;
1480 case 3: /* Blinking Underline */
1481 case 4: /* Steady Underline */
1482 XftDrawRect(xw.draw, &drawcol,
1483 borderpx + cx * win.cw,
1484 borderpx + (cy + 1) * win.ch - \
1485 cursorthickness,
1486 win.cw, cursorthickness);
1487 break;
1488 case 5: /* Blinking bar */
1489 case 6: /* Steady bar */
1490 XftDrawRect(xw.draw, &drawcol,
1491 borderpx + cx * win.cw,
1492 borderpx + cy * win.ch,
1493 cursorthickness, win.ch);
1494 break;
1495 }
1496 } else {
1497 XftDrawRect(xw.draw, &drawcol,
1498 borderpx + cx * win.cw,
1499 borderpx + cy * win.ch,
1500 win.cw - 1, 1);
1501 XftDrawRect(xw.draw, &drawcol,
1502 borderpx + cx * win.cw,
1503 borderpx + cy * win.ch,
1504 1, win.ch - 1);
1505 XftDrawRect(xw.draw, &drawcol,
1506 borderpx + (cx + 1) * win.cw - 1,
1507 borderpx + cy * win.ch,
1508 1, win.ch - 1);
1509 XftDrawRect(xw.draw, &drawcol,
1510 borderpx + cx * win.cw,
1511 borderpx + (cy + 1) * win.ch - 1,
1512 win.cw, 1);
1513 }
1514 }
1515
1516 void
1517 xsetenv(void)
1518 {
1519 char buf[sizeof(long) * 8 + 1];
1520
1521 snprintf(buf, sizeof(buf), "%lu", xw.win);
1522 setenv("WINDOWID", buf, 1);
1523 }
1524
1525 void
1526 xsettitle(char *p)
1527 {
1528 XTextProperty prop;
1529 DEFAULT(p, opt_title);
1530
1531 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1532 &prop);
1533 XSetWMName(xw.dpy, xw.win, &prop);
1534 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1535 XFree(prop.value);
1536 }
1537
1538 int
1539 xstartdraw(void)
1540 {
1541 return IS_SET(MODE_VISIBLE);
1542 }
1543
1544 void
1545 xdrawline(Line line, int x1, int y1, int x2)
1546 {
1547 int i, x, ox, numspecs;
1548 Glyph base, new;
1549 XftGlyphFontSpec *specs = xw.specbuf;
1550
1551 numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
1552 i = ox = 0;
1553 for (x = x1; x < x2 && i < numspecs; x++) {
1554 new = line[x];
1555 if (new.mode == ATTR_WDUMMY)
1556 continue;
1557 if (selected(x, y1))
1558 new.mode ^= ATTR_REVERSE;
1559 if (i > 0 && ATTRCMP(base, new)) {
1560 xdrawglyphfontspecs(specs, base, i, ox, y1);
1561 specs += i;
1562 numspecs -= i;
1563 i = 0;
1564 }
1565 if (i == 0) {
1566 ox = x;
1567 base = new;
1568 }
1569 i++;
1570 }
1571 if (i > 0)
1572 xdrawglyphfontspecs(specs, base, i, ox, y1);
1573 }
1574
1575 void
1576 xfinishdraw(void)
1577 {
1578 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1579 win.h, 0, 0);
1580 XSetForeground(xw.dpy, dc.gc,
1581 dc.col[IS_SET(MODE_REVERSE)?
1582 defaultfg : defaultbg].pixel);
1583 }
1584
1585 void
1586 xximspot(int x, int y)
1587 {
1588 XPoint spot = { borderpx + x * win.cw, borderpx + (y + 1) * win.ch };
1589 XVaNestedList attr = XVaCreateNestedList(0, XNSpotLocation, &spot, NULL);
1590
1591 XSetICValues(xw.xic, XNPreeditAttributes, attr, NULL);
1592 XFree(attr);
1593 }
1594
1595 void
1596 expose(XEvent *ev)
1597 {
1598 redraw();
1599 }
1600
1601 void
1602 visibility(XEvent *ev)
1603 {
1604 XVisibilityEvent *e = &ev->xvisibility;
1605
1606 MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
1607 }
1608
1609 void
1610 unmap(XEvent *ev)
1611 {
1612 win.mode &= ~MODE_VISIBLE;
1613 }
1614
1615 void
1616 xsetpointermotion(int set)
1617 {
1618 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1619 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1620 }
1621
1622 void
1623 xsetmode(int set, unsigned int flags)
1624 {
1625 int mode = win.mode;
1626 MODBIT(win.mode, set, flags);
1627 if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
1628 redraw();
1629 }
1630
1631 int
1632 xsetcursor(int cursor)
1633 {
1634 DEFAULT(cursor, 1);
1635 if (!BETWEEN(cursor, 0, 6))
1636 return 1;
1637 win.cursor = cursor;
1638 return 0;
1639 }
1640
1641 void
1642 xseturgency(int add)
1643 {
1644 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1645
1646 MODBIT(h->flags, add, XUrgencyHint);
1647 XSetWMHints(xw.dpy, xw.win, h);
1648 XFree(h);
1649 }
1650
1651 void
1652 xbell(void)
1653 {
1654 if (!(IS_SET(MODE_FOCUSED)))
1655 xseturgency(1);
1656 if (bellvolume)
1657 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1658 }
1659
1660 void
1661 focus(XEvent *ev)
1662 {
1663 XFocusChangeEvent *e = &ev->xfocus;
1664
1665 if (e->mode == NotifyGrab)
1666 return;
1667
1668 if (ev->type == FocusIn) {
1669 XSetICFocus(xw.xic);
1670 win.mode |= MODE_FOCUSED;
1671 xseturgency(0);
1672 if (IS_SET(MODE_FOCUS))
1673 ttywrite("\033[I", 3, 0);
1674 } else {
1675 XUnsetICFocus(xw.xic);
1676 win.mode &= ~MODE_FOCUSED;
1677 if (IS_SET(MODE_FOCUS))
1678 ttywrite("\033[O", 3, 0);
1679 }
1680 }
1681
1682 int
1683 match(uint mask, uint state)
1684 {
1685 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1686 }
1687
1688 char*
1689 kmap(KeySym k, uint state)
1690 {
1691 Key *kp;
1692 int i;
1693
1694 /* Check for mapped keys out of X11 function keys. */
1695 for (i = 0; i < LEN(mappedkeys); i++) {
1696 if (mappedkeys[i] == k)
1697 break;
1698 }
1699 if (i == LEN(mappedkeys)) {
1700 if ((k & 0xFFFF) < 0xFD00)
1701 return NULL;
1702 }
1703
1704 for (kp = key; kp < key + LEN(key); kp++) {
1705 if (kp->k != k)
1706 continue;
1707
1708 if (!match(kp->mask, state))
1709 continue;
1710
1711 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1712 continue;
1713 if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
1714 continue;
1715
1716 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1717 continue;
1718
1719 return kp->s;
1720 }
1721
1722 return NULL;
1723 }
1724
1725 void
1726 kpress(XEvent *ev)
1727 {
1728 XKeyEvent *e = &ev->xkey;
1729 KeySym ksym;
1730 char buf[32], *customkey;
1731 int len;
1732 Rune c;
1733 Status status;
1734 Shortcut *bp;
1735
1736 if (IS_SET(MODE_KBDLOCK))
1737 return;
1738
1739 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
1740 /* 1. shortcuts */
1741 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
1742 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1743 bp->func(&(bp->arg));
1744 return;
1745 }
1746 }
1747
1748 /* 2. custom keys from config.h */
1749 if ((customkey = kmap(ksym, e->state))) {
1750 ttywrite(customkey, strlen(customkey), 1);
1751 return;
1752 }
1753
1754 /* 3. composed string from input method */
1755 if (len == 0)
1756 return;
1757 if (len == 1 && e->state & Mod1Mask) {
1758 if (IS_SET(MODE_8BIT)) {
1759 if (*buf < 0177) {
1760 c = *buf | 0x80;
1761 len = utf8encode(c, buf);
1762 }
1763 } else {
1764 buf[1] = buf[0];
1765 buf[0] = '\033';
1766 len = 2;
1767 }
1768 }
1769 ttywrite(buf, len, 1);
1770 }
1771
1772
1773 void
1774 cmessage(XEvent *e)
1775 {
1776 /*
1777 * See xembed specs
1778 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1779 */
1780 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1781 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1782 win.mode |= MODE_FOCUSED;
1783 xseturgency(0);
1784 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1785 win.mode &= ~MODE_FOCUSED;
1786 }
1787 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1788 ttyhangup();
1789 exit(0);
1790 }
1791 }
1792
1793 void
1794 resize(XEvent *e)
1795 {
1796 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1797 return;
1798
1799 cresize(e->xconfigure.width, e->xconfigure.height);
1800 }
1801
1802 void
1803 run(void)
1804 {
1805 XEvent ev;
1806 int w = win.w, h = win.h;
1807 fd_set rfd;
1808 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
1809 int ttyfd;
1810 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
1811 long deltatime;
1812
1813 /* Waiting for window mapping */
1814 do {
1815 XNextEvent(xw.dpy, &ev);
1816 /*
1817 * This XFilterEvent call is required because of XOpenIM. It
1818 * does filter out the key event and some client message for
1819 * the input method too.
1820 */
1821 if (XFilterEvent(&ev, None))
1822 continue;
1823 if (ev.type == ConfigureNotify) {
1824 w = ev.xconfigure.width;
1825 h = ev.xconfigure.height;
1826 }
1827 } while (ev.type != MapNotify);
1828
1829 ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
1830 cresize(w, h);
1831
1832 clock_gettime(CLOCK_MONOTONIC, &last);
1833 lastblink = last;
1834
1835 for (xev = actionfps;;) {
1836 FD_ZERO(&rfd);
1837 FD_SET(ttyfd, &rfd);
1838 FD_SET(xfd, &rfd);
1839
1840 if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1841 if (errno == EINTR)
1842 continue;
1843 die("select failed: %s\n", strerror(errno));
1844 }
1845 if (FD_ISSET(ttyfd, &rfd)) {
1846 ttyread();
1847 if (blinktimeout) {
1848 blinkset = tattrset(ATTR_BLINK);
1849 if (!blinkset)
1850 MODBIT(win.mode, 0, MODE_BLINK);
1851 }
1852 }
1853
1854 if (FD_ISSET(xfd, &rfd))
1855 xev = actionfps;
1856
1857 clock_gettime(CLOCK_MONOTONIC, &now);
1858 drawtimeout.tv_sec = 0;
1859 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
1860 tv = &drawtimeout;
1861
1862 dodraw = 0;
1863 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
1864 tsetdirtattr(ATTR_BLINK);
1865 win.mode ^= MODE_BLINK;
1866 lastblink = now;
1867 dodraw = 1;
1868 }
1869 deltatime = TIMEDIFF(now, last);
1870 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
1871 dodraw = 1;
1872 last = now;
1873 }
1874
1875 if (dodraw) {
1876 while (XPending(xw.dpy)) {
1877 XNextEvent(xw.dpy, &ev);
1878 if (XFilterEvent(&ev, None))
1879 continue;
1880 if (handler[ev.type])
1881 (handler[ev.type])(&ev);
1882 }
1883
1884 draw();
1885 XFlush(xw.dpy);
1886
1887 if (xev && !FD_ISSET(xfd, &rfd))
1888 xev--;
1889 if (!FD_ISSET(ttyfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
1890 if (blinkset) {
1891 if (TIMEDIFF(now, lastblink) \
1892 > blinktimeout) {
1893 drawtimeout.tv_nsec = 1000;
1894 } else {
1895 drawtimeout.tv_nsec = (1E6 * \
1896 (blinktimeout - \
1897 TIMEDIFF(now,
1898 lastblink)));
1899 }
1900 drawtimeout.tv_sec = \
1901 drawtimeout.tv_nsec / 1E9;
1902 drawtimeout.tv_nsec %= (long)1E9;
1903 } else {
1904 tv = NULL;
1905 }
1906 }
1907 }
1908 }
1909 }
1910
1911 void
1912 usage(void)
1913 {
1914 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
1915 " [-n name] [-o file]\n"
1916 " [-T title] [-t title] [-w windowid]"
1917 " [[-e] command [args ...]]\n"
1918 " %s [-aiv] [-c class] [-f font] [-g geometry]"
1919 " [-n name] [-o file]\n"
1920 " [-T title] [-t title] [-w windowid] -l line"
1921 " [stty_args ...]\n", argv0, argv0);
1922 }
1923
1924 int
1925 main(int argc, char *argv[])
1926 {
1927 xw.l = xw.t = 0;
1928 xw.isfixed = False;
1929 win.cursor = cursorshape;
1930
1931 ARGBEGIN {
1932 case 'a':
1933 allowaltscreen = 0;
1934 break;
1935 case 'c':
1936 opt_class = EARGF(usage());
1937 break;
1938 case 'e':
1939 if (argc > 0)
1940 --argc, ++argv;
1941 goto run;
1942 case 'f':
1943 opt_font = EARGF(usage());
1944 break;
1945 case 'g':
1946 xw.gm = XParseGeometry(EARGF(usage()),
1947 &xw.l, &xw.t, &cols, &rows);
1948 break;
1949 case 'i':
1950 xw.isfixed = 1;
1951 break;
1952 case 'o':
1953 opt_io = EARGF(usage());
1954 break;
1955 case 'l':
1956 opt_line = EARGF(usage());
1957 break;
1958 case 'n':
1959 opt_name = EARGF(usage());
1960 break;
1961 case 't':
1962 case 'T':
1963 opt_title = EARGF(usage());
1964 break;
1965 case 'w':
1966 opt_embed = EARGF(usage());
1967 break;
1968 case 'v':
1969 die("%s " VERSION "\n", argv0);
1970 break;
1971 default:
1972 usage();
1973 } ARGEND;
1974
1975 run:
1976 if (argc > 0) /* eat all remaining arguments */
1977 opt_cmd = argv;
1978
1979 if (!opt_title)
1980 opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];
1981
1982 setlocale(LC_CTYPE, "");
1983 XSetLocaleModifiers("");
1984 cols = MAX(cols, 1);
1985 rows = MAX(rows, 1);
1986 tnew(cols, rows);
1987 xinit(cols, rows);
1988 xsetenv();
1989 selinit();
1990 run();
1991
1992 return 0;
1993 }