Xinqi Bao's Git

projects / st.git / blob


5828a3b1a42ee0fa1fd04ced06515eca05eb5651
[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 if (!xloadcolor(x, name, &ncolor))
767 return 1;
768
769 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
770 dc.col[x] = ncolor;
771
772 return 0;
773 }
774
775 /*
776 * Absolute coordinates.
777 */
778 void
779 xclear(int x1, int y1, int x2, int y2)
780 {
781 XftDrawRect(xw.draw,
782 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
783 x1, y1, x2-x1, y2-y1);
784 }
785
786 void
787 xhints(void)
788 {
789 XClassHint class = {opt_name ? opt_name : termname,
790 opt_class ? opt_class : termname};
791 XWMHints wm = {.flags = InputHint, .input = 1};
792 XSizeHints *sizeh;
793
794 sizeh = XAllocSizeHints();
795
796 sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
797 sizeh->height = win.h;
798 sizeh->width = win.w;
799 sizeh->height_inc = win.ch;
800 sizeh->width_inc = win.cw;
801 sizeh->base_height = 2 * borderpx;
802 sizeh->base_width = 2 * borderpx;
803 sizeh->min_height = win.ch + 2 * borderpx;
804 sizeh->min_width = win.cw + 2 * borderpx;
805 if (xw.isfixed) {
806 sizeh->flags |= PMaxSize;
807 sizeh->min_width = sizeh->max_width = win.w;
808 sizeh->min_height = sizeh->max_height = win.h;
809 }
810 if (xw.gm & (XValue|YValue)) {
811 sizeh->flags |= USPosition | PWinGravity;
812 sizeh->x = xw.l;
813 sizeh->y = xw.t;
814 sizeh->win_gravity = xgeommasktogravity(xw.gm);
815 }
816
817 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
818 &class);
819 XFree(sizeh);
820 }
821
822 int
823 xgeommasktogravity(int mask)
824 {
825 switch (mask & (XNegative|YNegative)) {
826 case 0:
827 return NorthWestGravity;
828 case XNegative:
829 return NorthEastGravity;
830 case YNegative:
831 return SouthWestGravity;
832 }
833
834 return SouthEastGravity;
835 }
836
837 int
838 xloadfont(Font *f, FcPattern *pattern)
839 {
840 FcPattern *configured;
841 FcPattern *match;
842 FcResult result;
843 XGlyphInfo extents;
844 int wantattr, haveattr;
845
846 /*
847 * Manually configure instead of calling XftMatchFont
848 * so that we can use the configured pattern for
849 * "missing glyph" lookups.
850 */
851 configured = FcPatternDuplicate(pattern);
852 if (!configured)
853 return 1;
854
855 FcConfigSubstitute(NULL, configured, FcMatchPattern);
856 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
857
858 match = FcFontMatch(NULL, configured, &result);
859 if (!match) {
860 FcPatternDestroy(configured);
861 return 1;
862 }
863
864 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
865 FcPatternDestroy(configured);
866 FcPatternDestroy(match);
867 return 1;
868 }
869
870 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
871 XftResultMatch)) {
872 /*
873 * Check if xft was unable to find a font with the appropriate
874 * slant but gave us one anyway. Try to mitigate.
875 */
876 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
877 &haveattr) != XftResultMatch) || haveattr < wantattr) {
878 f->badslant = 1;
879 fputs("font slant does not match\n", stderr);
880 }
881 }
882
883 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
884 XftResultMatch)) {
885 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
886 &haveattr) != XftResultMatch) || haveattr != wantattr) {
887 f->badweight = 1;
888 fputs("font weight does not match\n", stderr);
889 }
890 }
891
892 XftTextExtentsUtf8(xw.dpy, f->match,
893 (const FcChar8 *) ascii_printable,
894 strlen(ascii_printable), &extents);
895
896 f->set = NULL;
897 f->pattern = configured;
898
899 f->ascent = f->match->ascent;
900 f->descent = f->match->descent;
901 f->lbearing = 0;
902 f->rbearing = f->match->max_advance_width;
903
904 f->height = f->ascent + f->descent;
905 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
906
907 return 0;
908 }
909
910 void
911 xloadfonts(char *fontstr, double fontsize)
912 {
913 FcPattern *pattern;
914 double fontval;
915
916 if (fontstr[0] == '-')
917 pattern = XftXlfdParse(fontstr, False, False);
918 else
919 pattern = FcNameParse((FcChar8 *)fontstr);
920
921 if (!pattern)
922 die("can't open font %s\n", fontstr);
923
924 if (fontsize > 1) {
925 FcPatternDel(pattern, FC_PIXEL_SIZE);
926 FcPatternDel(pattern, FC_SIZE);
927 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
928 usedfontsize = fontsize;
929 } else {
930 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
931 FcResultMatch) {
932 usedfontsize = fontval;
933 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
934 FcResultMatch) {
935 usedfontsize = -1;
936 } else {
937 /*
938 * Default font size is 12, if none given. This is to
939 * have a known usedfontsize value.
940 */
941 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
942 usedfontsize = 12;
943 }
944 defaultfontsize = usedfontsize;
945 }
946
947 if (xloadfont(&dc.font, pattern))
948 die("can't open font %s\n", fontstr);
949
950 if (usedfontsize < 0) {
951 FcPatternGetDouble(dc.font.match->pattern,
952 FC_PIXEL_SIZE, 0, &fontval);
953 usedfontsize = fontval;
954 if (fontsize == 0)
955 defaultfontsize = fontval;
956 }
957
958 /* Setting character width and height. */
959 win.cw = ceilf(dc.font.width * cwscale);
960 win.ch = ceilf(dc.font.height * chscale);
961
962 FcPatternDel(pattern, FC_SLANT);
963 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
964 if (xloadfont(&dc.ifont, pattern))
965 die("can't open font %s\n", fontstr);
966
967 FcPatternDel(pattern, FC_WEIGHT);
968 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
969 if (xloadfont(&dc.ibfont, pattern))
970 die("can't open font %s\n", fontstr);
971
972 FcPatternDel(pattern, FC_SLANT);
973 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
974 if (xloadfont(&dc.bfont, pattern))
975 die("can't open font %s\n", fontstr);
976
977 FcPatternDestroy(pattern);
978 }
979
980 void
981 xunloadfont(Font *f)
982 {
983 XftFontClose(xw.dpy, f->match);
984 FcPatternDestroy(f->pattern);
985 if (f->set)
986 FcFontSetDestroy(f->set);
987 }
988
989 void
990 xunloadfonts(void)
991 {
992 /* Free the loaded fonts in the font cache. */
993 while (frclen > 0)
994 XftFontClose(xw.dpy, frc[--frclen].font);
995
996 xunloadfont(&dc.font);
997 xunloadfont(&dc.bfont);
998 xunloadfont(&dc.ifont);
999 xunloadfont(&dc.ibfont);
1000 }
1001
1002 void
1003 ximopen(Display *dpy)
1004 {
1005 XIMCallback destroy = { .client_data = NULL, .callback = ximdestroy };
1006
1007 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1008 XSetLocaleModifiers("@im=local");
1009 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1010 XSetLocaleModifiers("@im=");
1011 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL)
1012 die("XOpenIM failed. Could not open input device.\n");
1013 }
1014 }
1015 if (XSetIMValues(xw.xim, XNDestroyCallback, &destroy, NULL) != NULL)
1016 die("XSetIMValues failed. Could not set input method value.\n");
1017 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
1018 XNClientWindow, xw.win, XNFocusWindow, xw.win, NULL);
1019 if (xw.xic == NULL)
1020 die("XCreateIC failed. Could not obtain input method.\n");
1021 }
1022
1023 void
1024 ximinstantiate(Display *dpy, XPointer client, XPointer call)
1025 {
1026 ximopen(dpy);
1027 XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1028 ximinstantiate, NULL);
1029 }
1030
1031 void
1032 ximdestroy(XIM xim, XPointer client, XPointer call)
1033 {
1034 xw.xim = NULL;
1035 XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1036 ximinstantiate, NULL);
1037 }
1038
1039 void
1040 xinit(int cols, int rows)
1041 {
1042 XGCValues gcvalues;
1043 Cursor cursor;
1044 Window parent;
1045 pid_t thispid = getpid();
1046 XColor xmousefg, xmousebg;
1047
1048 if (!(xw.dpy = XOpenDisplay(NULL)))
1049 die("can't open display\n");
1050 xw.scr = XDefaultScreen(xw.dpy);
1051 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
1052
1053 /* font */
1054 if (!FcInit())
1055 die("could not init fontconfig.\n");
1056
1057 usedfont = (opt_font == NULL)? font : opt_font;
1058 xloadfonts(usedfont, 0);
1059
1060 /* colors */
1061 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1062 xloadcols();
1063
1064 /* adjust fixed window geometry */
1065 win.w = 2 * borderpx + cols * win.cw;
1066 win.h = 2 * borderpx + rows * win.ch;
1067 if (xw.gm & XNegative)
1068 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
1069 if (xw.gm & YNegative)
1070 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
1071
1072 /* Events */
1073 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
1074 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
1075 xw.attrs.bit_gravity = NorthWestGravity;
1076 xw.attrs.event_mask = FocusChangeMask | KeyPressMask | KeyReleaseMask
1077 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1078 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
1079 xw.attrs.colormap = xw.cmap;
1080
1081 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
1082 parent = XRootWindow(xw.dpy, xw.scr);
1083 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
1084 win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1085 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
1086 | CWEventMask | CWColormap, &xw.attrs);
1087
1088 memset(&gcvalues, 0, sizeof(gcvalues));
1089 gcvalues.graphics_exposures = False;
1090 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
1091 &gcvalues);
1092 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
1093 DefaultDepth(xw.dpy, xw.scr));
1094 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
1095 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
1096
1097 /* font spec buffer */
1098 xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
1099
1100 /* Xft rendering context */
1101 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
1102
1103 /* input methods */
1104 ximopen(xw.dpy);
1105
1106 /* white cursor, black outline */
1107 cursor = XCreateFontCursor(xw.dpy, mouseshape);
1108 XDefineCursor(xw.dpy, xw.win, cursor);
1109
1110 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
1111 xmousefg.red = 0xffff;
1112 xmousefg.green = 0xffff;
1113 xmousefg.blue = 0xffff;
1114 }
1115
1116 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
1117 xmousebg.red = 0x0000;
1118 xmousebg.green = 0x0000;
1119 xmousebg.blue = 0x0000;
1120 }
1121
1122 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
1123
1124 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1125 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
1126 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
1127 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
1128
1129 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
1130 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
1131 PropModeReplace, (uchar *)&thispid, 1);
1132
1133 win.mode = MODE_NUMLOCK;
1134 resettitle();
1135 XMapWindow(xw.dpy, xw.win);
1136 xhints();
1137 XSync(xw.dpy, False);
1138
1139 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
1140 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
1141 xsel.primary = NULL;
1142 xsel.clipboard = NULL;
1143 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
1144 if (xsel.xtarget == None)
1145 xsel.xtarget = XA_STRING;
1146 }
1147
1148 int
1149 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
1150 {
1151 float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
1152 ushort mode, prevmode = USHRT_MAX;
1153 Font *font = &dc.font;
1154 int frcflags = FRC_NORMAL;
1155 float runewidth = win.cw;
1156 Rune rune;
1157 FT_UInt glyphidx;
1158 FcResult fcres;
1159 FcPattern *fcpattern, *fontpattern;
1160 FcFontSet *fcsets[] = { NULL };
1161 FcCharSet *fccharset;
1162 int i, f, numspecs = 0;
1163
1164 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1165 /* Fetch rune and mode for current glyph. */
1166 rune = glyphs[i].u;
1167 mode = glyphs[i].mode;
1168
1169 /* Skip dummy wide-character spacing. */
1170 if (mode == ATTR_WDUMMY)
1171 continue;
1172
1173 /* Determine font for glyph if different from previous glyph. */
1174 if (prevmode != mode) {
1175 prevmode = mode;
1176 font = &dc.font;
1177 frcflags = FRC_NORMAL;
1178 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1179 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1180 font = &dc.ibfont;
1181 frcflags = FRC_ITALICBOLD;
1182 } else if (mode & ATTR_ITALIC) {
1183 font = &dc.ifont;
1184 frcflags = FRC_ITALIC;
1185 } else if (mode & ATTR_BOLD) {
1186 font = &dc.bfont;
1187 frcflags = FRC_BOLD;
1188 }
1189 yp = winy + font->ascent;
1190 }
1191
1192 /* Lookup character index with default font. */
1193 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1194 if (glyphidx) {
1195 specs[numspecs].font = font->match;
1196 specs[numspecs].glyph = glyphidx;
1197 specs[numspecs].x = (short)xp;
1198 specs[numspecs].y = (short)yp;
1199 xp += runewidth;
1200 numspecs++;
1201 continue;
1202 }
1203
1204 /* Fallback on font cache, search the font cache for match. */
1205 for (f = 0; f < frclen; f++) {
1206 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1207 /* Everything correct. */
1208 if (glyphidx && frc[f].flags == frcflags)
1209 break;
1210 /* We got a default font for a not found glyph. */
1211 if (!glyphidx && frc[f].flags == frcflags
1212 && frc[f].unicodep == rune) {
1213 break;
1214 }
1215 }
1216
1217 /* Nothing was found. Use fontconfig to find matching font. */
1218 if (f >= frclen) {
1219 if (!font->set)
1220 font->set = FcFontSort(0, font->pattern,
1221 1, 0, &fcres);
1222 fcsets[0] = font->set;
1223
1224 /*
1225 * Nothing was found in the cache. Now use
1226 * some dozen of Fontconfig calls to get the
1227 * font for one single character.
1228 *
1229 * Xft and fontconfig are design failures.
1230 */
1231 fcpattern = FcPatternDuplicate(font->pattern);
1232 fccharset = FcCharSetCreate();
1233
1234 FcCharSetAddChar(fccharset, rune);
1235 FcPatternAddCharSet(fcpattern, FC_CHARSET,
1236 fccharset);
1237 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1238
1239 FcConfigSubstitute(0, fcpattern,
1240 FcMatchPattern);
1241 FcDefaultSubstitute(fcpattern);
1242
1243 fontpattern = FcFontSetMatch(0, fcsets, 1,
1244 fcpattern, &fcres);
1245
1246 /* Allocate memory for the new cache entry. */
1247 if (frclen >= frccap) {
1248 frccap += 16;
1249 frc = xrealloc(frc, frccap * sizeof(Fontcache));
1250 }
1251
1252 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1253 fontpattern);
1254 if (!frc[frclen].font)
1255 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1256 strerror(errno));
1257 frc[frclen].flags = frcflags;
1258 frc[frclen].unicodep = rune;
1259
1260 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1261
1262 f = frclen;
1263 frclen++;
1264
1265 FcPatternDestroy(fcpattern);
1266 FcCharSetDestroy(fccharset);
1267 }
1268
1269 specs[numspecs].font = frc[f].font;
1270 specs[numspecs].glyph = glyphidx;
1271 specs[numspecs].x = (short)xp;
1272 specs[numspecs].y = (short)yp;
1273 xp += runewidth;
1274 numspecs++;
1275 }
1276
1277 return numspecs;
1278 }
1279
1280 void
1281 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1282 {
1283 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1284 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1285 width = charlen * win.cw;
1286 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1287 XRenderColor colfg, colbg;
1288 XRectangle r;
1289
1290 /* Fallback on color display for attributes not supported by the font */
1291 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1292 if (dc.ibfont.badslant || dc.ibfont.badweight)
1293 base.fg = defaultattr;
1294 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1295 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1296 base.fg = defaultattr;
1297 }
1298
1299 if (IS_TRUECOL(base.fg)) {
1300 colfg.alpha = 0xffff;
1301 colfg.red = TRUERED(base.fg);
1302 colfg.green = TRUEGREEN(base.fg);
1303 colfg.blue = TRUEBLUE(base.fg);
1304 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1305 fg = &truefg;
1306 } else {
1307 fg = &dc.col[base.fg];
1308 }
1309
1310 if (IS_TRUECOL(base.bg)) {
1311 colbg.alpha = 0xffff;
1312 colbg.green = TRUEGREEN(base.bg);
1313 colbg.red = TRUERED(base.bg);
1314 colbg.blue = TRUEBLUE(base.bg);
1315 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1316 bg = &truebg;
1317 } else {
1318 bg = &dc.col[base.bg];
1319 }
1320
1321 /* Change basic system colors [0-7] to bright system colors [8-15] */
1322 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1323 fg = &dc.col[base.fg + 8];
1324
1325 if (IS_SET(MODE_REVERSE)) {
1326 if (fg == &dc.col[defaultfg]) {
1327 fg = &dc.col[defaultbg];
1328 } else {
1329 colfg.red = ~fg->color.red;
1330 colfg.green = ~fg->color.green;
1331 colfg.blue = ~fg->color.blue;
1332 colfg.alpha = fg->color.alpha;
1333 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1334 &revfg);
1335 fg = &revfg;
1336 }
1337
1338 if (bg == &dc.col[defaultbg]) {
1339 bg = &dc.col[defaultfg];
1340 } else {
1341 colbg.red = ~bg->color.red;
1342 colbg.green = ~bg->color.green;
1343 colbg.blue = ~bg->color.blue;
1344 colbg.alpha = bg->color.alpha;
1345 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1346 &revbg);
1347 bg = &revbg;
1348 }
1349 }
1350
1351 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1352 colfg.red = fg->color.red / 2;
1353 colfg.green = fg->color.green / 2;
1354 colfg.blue = fg->color.blue / 2;
1355 colfg.alpha = fg->color.alpha;
1356 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1357 fg = &revfg;
1358 }
1359
1360 if (base.mode & ATTR_REVERSE) {
1361 temp = fg;
1362 fg = bg;
1363 bg = temp;
1364 }
1365
1366 if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
1367 fg = bg;
1368
1369 if (base.mode & ATTR_INVISIBLE)
1370 fg = bg;
1371
1372 /* Intelligent cleaning up of the borders. */
1373 if (x == 0) {
1374 xclear(0, (y == 0)? 0 : winy, borderpx,
1375 winy + win.ch +
1376 ((winy + win.ch >= borderpx + win.th)? win.h : 0));
1377 }
1378 if (winx + width >= borderpx + win.tw) {
1379 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1380 ((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
1381 }
1382 if (y == 0)
1383 xclear(winx, 0, winx + width, borderpx);
1384 if (winy + win.ch >= borderpx + win.th)
1385 xclear(winx, winy + win.ch, winx + width, win.h);
1386
1387 /* Clean up the region we want to draw to. */
1388 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1389
1390 /* Set the clip region because Xft is sometimes dirty. */
1391 r.x = 0;
1392 r.y = 0;
1393 r.height = win.ch;
1394 r.width = width;
1395 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1396
1397 /* Render the glyphs. */
1398 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1399
1400 /* Render underline and strikethrough. */
1401 if (base.mode & ATTR_UNDERLINE) {
1402 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
1403 width, 1);
1404 }
1405
1406 if (base.mode & ATTR_STRUCK) {
1407 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
1408 width, 1);
1409 }
1410
1411 /* Reset clip to none. */
1412 XftDrawSetClip(xw.draw, 0);
1413 }
1414
1415 void
1416 xdrawglyph(Glyph g, int x, int y)
1417 {
1418 int numspecs;
1419 XftGlyphFontSpec spec;
1420
1421 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1422 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1423 }
1424
1425 void
1426 xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
1427 {
1428 Color drawcol;
1429
1430 /* remove the old cursor */
1431 if (selected(ox, oy))
1432 og.mode ^= ATTR_REVERSE;
1433 xdrawglyph(og, ox, oy);
1434
1435 if (IS_SET(MODE_HIDE))
1436 return;
1437
1438 /*
1439 * Select the right color for the right mode.
1440 */
1441 g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
1442
1443 if (IS_SET(MODE_REVERSE)) {
1444 g.mode |= ATTR_REVERSE;
1445 g.bg = defaultfg;
1446 if (selected(cx, cy)) {
1447 drawcol = dc.col[defaultcs];
1448 g.fg = defaultrcs;
1449 } else {
1450 drawcol = dc.col[defaultrcs];
1451 g.fg = defaultcs;
1452 }
1453 } else {
1454 if (selected(cx, cy)) {
1455 g.fg = defaultfg;
1456 g.bg = defaultrcs;
1457 } else {
1458 g.fg = defaultbg;
1459 g.bg = defaultcs;
1460 }
1461 drawcol = dc.col[g.bg];
1462 }
1463
1464 /* draw the new one */
1465 if (IS_SET(MODE_FOCUSED)) {
1466 switch (win.cursor) {
1467 case 7: /* st extension: snowman (U+2603) */
1468 g.u = 0x2603;
1469 case 0: /* Blinking Block */
1470 case 1: /* Blinking Block (Default) */
1471 case 2: /* Steady Block */
1472 xdrawglyph(g, cx, cy);
1473 break;
1474 case 3: /* Blinking Underline */
1475 case 4: /* Steady Underline */
1476 XftDrawRect(xw.draw, &drawcol,
1477 borderpx + cx * win.cw,
1478 borderpx + (cy + 1) * win.ch - \
1479 cursorthickness,
1480 win.cw, cursorthickness);
1481 break;
1482 case 5: /* Blinking bar */
1483 case 6: /* Steady bar */
1484 XftDrawRect(xw.draw, &drawcol,
1485 borderpx + cx * win.cw,
1486 borderpx + cy * win.ch,
1487 cursorthickness, win.ch);
1488 break;
1489 }
1490 } else {
1491 XftDrawRect(xw.draw, &drawcol,
1492 borderpx + cx * win.cw,
1493 borderpx + cy * win.ch,
1494 win.cw - 1, 1);
1495 XftDrawRect(xw.draw, &drawcol,
1496 borderpx + cx * win.cw,
1497 borderpx + cy * win.ch,
1498 1, win.ch - 1);
1499 XftDrawRect(xw.draw, &drawcol,
1500 borderpx + (cx + 1) * win.cw - 1,
1501 borderpx + cy * win.ch,
1502 1, win.ch - 1);
1503 XftDrawRect(xw.draw, &drawcol,
1504 borderpx + cx * win.cw,
1505 borderpx + (cy + 1) * win.ch - 1,
1506 win.cw, 1);
1507 }
1508 }
1509
1510 void
1511 xsetenv(void)
1512 {
1513 char buf[sizeof(long) * 8 + 1];
1514
1515 snprintf(buf, sizeof(buf), "%lu", xw.win);
1516 setenv("WINDOWID", buf, 1);
1517 }
1518
1519 void
1520 xsettitle(char *p)
1521 {
1522 XTextProperty prop;
1523 DEFAULT(p, opt_title);
1524
1525 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1526 &prop);
1527 XSetWMName(xw.dpy, xw.win, &prop);
1528 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1529 XFree(prop.value);
1530 }
1531
1532 int
1533 xstartdraw(void)
1534 {
1535 return IS_SET(MODE_VISIBLE);
1536 }
1537
1538 void
1539 xdrawline(Line line, int x1, int y1, int x2)
1540 {
1541 int i, x, ox, numspecs;
1542 Glyph base, new;
1543 XftGlyphFontSpec *specs = xw.specbuf;
1544
1545 numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
1546 i = ox = 0;
1547 for (x = x1; x < x2 && i < numspecs; x++) {
1548 new = line[x];
1549 if (new.mode == ATTR_WDUMMY)
1550 continue;
1551 if (selected(x, y1))
1552 new.mode ^= ATTR_REVERSE;
1553 if (i > 0 && ATTRCMP(base, new)) {
1554 xdrawglyphfontspecs(specs, base, i, ox, y1);
1555 specs += i;
1556 numspecs -= i;
1557 i = 0;
1558 }
1559 if (i == 0) {
1560 ox = x;
1561 base = new;
1562 }
1563 i++;
1564 }
1565 if (i > 0)
1566 xdrawglyphfontspecs(specs, base, i, ox, y1);
1567 }
1568
1569 void
1570 xfinishdraw(void)
1571 {
1572 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1573 win.h, 0, 0);
1574 XSetForeground(xw.dpy, dc.gc,
1575 dc.col[IS_SET(MODE_REVERSE)?
1576 defaultfg : defaultbg].pixel);
1577 }
1578
1579 void
1580 xximspot(int x, int y)
1581 {
1582 XPoint spot = { borderpx + x * win.cw, borderpx + (y + 1) * win.ch };
1583 XVaNestedList attr = XVaCreateNestedList(0, XNSpotLocation, &spot, NULL);
1584
1585 XSetICValues(xw.xic, XNPreeditAttributes, attr, NULL);
1586 XFree(attr);
1587 }
1588
1589 void
1590 expose(XEvent *ev)
1591 {
1592 redraw();
1593 }
1594
1595 void
1596 visibility(XEvent *ev)
1597 {
1598 XVisibilityEvent *e = &ev->xvisibility;
1599
1600 MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
1601 }
1602
1603 void
1604 unmap(XEvent *ev)
1605 {
1606 win.mode &= ~MODE_VISIBLE;
1607 }
1608
1609 void
1610 xsetpointermotion(int set)
1611 {
1612 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1613 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1614 }
1615
1616 void
1617 xsetmode(int set, unsigned int flags)
1618 {
1619 int mode = win.mode;
1620 MODBIT(win.mode, set, flags);
1621 if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
1622 redraw();
1623 }
1624
1625 int
1626 xsetcursor(int cursor)
1627 {
1628 DEFAULT(cursor, 1);
1629 if (!BETWEEN(cursor, 0, 6))
1630 return 1;
1631 win.cursor = cursor;
1632 return 0;
1633 }
1634
1635 void
1636 xseturgency(int add)
1637 {
1638 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1639
1640 MODBIT(h->flags, add, XUrgencyHint);
1641 XSetWMHints(xw.dpy, xw.win, h);
1642 XFree(h);
1643 }
1644
1645 void
1646 xbell(void)
1647 {
1648 if (!(IS_SET(MODE_FOCUSED)))
1649 xseturgency(1);
1650 if (bellvolume)
1651 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1652 }
1653
1654 void
1655 focus(XEvent *ev)
1656 {
1657 XFocusChangeEvent *e = &ev->xfocus;
1658
1659 if (e->mode == NotifyGrab)
1660 return;
1661
1662 if (ev->type == FocusIn) {
1663 XSetICFocus(xw.xic);
1664 win.mode |= MODE_FOCUSED;
1665 xseturgency(0);
1666 if (IS_SET(MODE_FOCUS))
1667 ttywrite("\033[I", 3, 0);
1668 } else {
1669 XUnsetICFocus(xw.xic);
1670 win.mode &= ~MODE_FOCUSED;
1671 if (IS_SET(MODE_FOCUS))
1672 ttywrite("\033[O", 3, 0);
1673 }
1674 }
1675
1676 int
1677 match(uint mask, uint state)
1678 {
1679 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1680 }
1681
1682 char*
1683 kmap(KeySym k, uint state)
1684 {
1685 Key *kp;
1686 int i;
1687
1688 /* Check for mapped keys out of X11 function keys. */
1689 for (i = 0; i < LEN(mappedkeys); i++) {
1690 if (mappedkeys[i] == k)
1691 break;
1692 }
1693 if (i == LEN(mappedkeys)) {
1694 if ((k & 0xFFFF) < 0xFD00)
1695 return NULL;
1696 }
1697
1698 for (kp = key; kp < key + LEN(key); kp++) {
1699 if (kp->k != k)
1700 continue;
1701
1702 if (!match(kp->mask, state))
1703 continue;
1704
1705 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1706 continue;
1707 if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
1708 continue;
1709
1710 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1711 continue;
1712
1713 return kp->s;
1714 }
1715
1716 return NULL;
1717 }
1718
1719 void
1720 kpress(XEvent *ev)
1721 {
1722 XKeyEvent *e = &ev->xkey;
1723 KeySym ksym;
1724 char buf[32], *customkey;
1725 int len;
1726 Rune c;
1727 Status status;
1728 Shortcut *bp;
1729
1730 if (IS_SET(MODE_KBDLOCK))
1731 return;
1732
1733 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
1734 /* 1. shortcuts */
1735 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
1736 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1737 bp->func(&(bp->arg));
1738 return;
1739 }
1740 }
1741
1742 /* 2. custom keys from config.h */
1743 if ((customkey = kmap(ksym, e->state))) {
1744 ttywrite(customkey, strlen(customkey), 1);
1745 return;
1746 }
1747
1748 /* 3. composed string from input method */
1749 if (len == 0)
1750 return;
1751 if (len == 1 && e->state & Mod1Mask) {
1752 if (IS_SET(MODE_8BIT)) {
1753 if (*buf < 0177) {
1754 c = *buf | 0x80;
1755 len = utf8encode(c, buf);
1756 }
1757 } else {
1758 buf[1] = buf[0];
1759 buf[0] = '\033';
1760 len = 2;
1761 }
1762 }
1763 ttywrite(buf, len, 1);
1764 }
1765
1766 void
1767 cmessage(XEvent *e)
1768 {
1769 /*
1770 * See xembed specs
1771 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1772 */
1773 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1774 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1775 win.mode |= MODE_FOCUSED;
1776 xseturgency(0);
1777 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1778 win.mode &= ~MODE_FOCUSED;
1779 }
1780 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1781 ttyhangup();
1782 exit(0);
1783 }
1784 }
1785
1786 void
1787 resize(XEvent *e)
1788 {
1789 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1790 return;
1791
1792 cresize(e->xconfigure.width, e->xconfigure.height);
1793 }
1794
1795 void
1796 run(void)
1797 {
1798 XEvent ev;
1799 int w = win.w, h = win.h;
1800 fd_set rfd;
1801 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
1802 int ttyfd;
1803 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
1804 long deltatime;
1805
1806 /* Waiting for window mapping */
1807 do {
1808 XNextEvent(xw.dpy, &ev);
1809 /*
1810 * This XFilterEvent call is required because of XOpenIM. It
1811 * does filter out the key event and some client message for
1812 * the input method too.
1813 */
1814 if (XFilterEvent(&ev, None))
1815 continue;
1816 if (ev.type == ConfigureNotify) {
1817 w = ev.xconfigure.width;
1818 h = ev.xconfigure.height;
1819 }
1820 } while (ev.type != MapNotify);
1821
1822 ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
1823 cresize(w, h);
1824
1825 clock_gettime(CLOCK_MONOTONIC, &last);
1826 lastblink = last;
1827
1828 for (xev = actionfps;;) {
1829 FD_ZERO(&rfd);
1830 FD_SET(ttyfd, &rfd);
1831 FD_SET(xfd, &rfd);
1832
1833 if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1834 if (errno == EINTR)
1835 continue;
1836 die("select failed: %s\n", strerror(errno));
1837 }
1838 if (FD_ISSET(ttyfd, &rfd)) {
1839 ttyread();
1840 if (blinktimeout) {
1841 blinkset = tattrset(ATTR_BLINK);
1842 if (!blinkset)
1843 MODBIT(win.mode, 0, MODE_BLINK);
1844 }
1845 }
1846
1847 if (FD_ISSET(xfd, &rfd))
1848 xev = actionfps;
1849
1850 clock_gettime(CLOCK_MONOTONIC, &now);
1851 drawtimeout.tv_sec = 0;
1852 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
1853 tv = &drawtimeout;
1854
1855 dodraw = 0;
1856 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
1857 tsetdirtattr(ATTR_BLINK);
1858 win.mode ^= MODE_BLINK;
1859 lastblink = now;
1860 dodraw = 1;
1861 }
1862 deltatime = TIMEDIFF(now, last);
1863 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
1864 dodraw = 1;
1865 last = now;
1866 }
1867
1868 if (dodraw) {
1869 while (XPending(xw.dpy)) {
1870 XNextEvent(xw.dpy, &ev);
1871 if (XFilterEvent(&ev, None))
1872 continue;
1873 if (handler[ev.type])
1874 (handler[ev.type])(&ev);
1875 }
1876
1877 draw();
1878 XFlush(xw.dpy);
1879
1880 if (xev && !FD_ISSET(xfd, &rfd))
1881 xev--;
1882 if (!FD_ISSET(ttyfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
1883 if (blinkset) {
1884 if (TIMEDIFF(now, lastblink) \
1885 > blinktimeout) {
1886 drawtimeout.tv_nsec = 1000;
1887 } else {
1888 drawtimeout.tv_nsec = (1E6 * \
1889 (blinktimeout - \
1890 TIMEDIFF(now,
1891 lastblink)));
1892 }
1893 drawtimeout.tv_sec = \
1894 drawtimeout.tv_nsec / 1E9;
1895 drawtimeout.tv_nsec %= (long)1E9;
1896 } else {
1897 tv = NULL;
1898 }
1899 }
1900 }
1901 }
1902 }
1903
1904 void
1905 usage(void)
1906 {
1907 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
1908 " [-n name] [-o file]\n"
1909 " [-T title] [-t title] [-w windowid]"
1910 " [[-e] command [args ...]]\n"
1911 " %s [-aiv] [-c class] [-f font] [-g geometry]"
1912 " [-n name] [-o file]\n"
1913 " [-T title] [-t title] [-w windowid] -l line"
1914 " [stty_args ...]\n", argv0, argv0);
1915 }
1916
1917 int
1918 main(int argc, char *argv[])
1919 {
1920 xw.l = xw.t = 0;
1921 xw.isfixed = False;
1922 win.cursor = cursorshape;
1923
1924 ARGBEGIN {
1925 case 'a':
1926 allowaltscreen = 0;
1927 break;
1928 case 'c':
1929 opt_class = EARGF(usage());
1930 break;
1931 case 'e':
1932 if (argc > 0)
1933 --argc, ++argv;
1934 goto run;
1935 case 'f':
1936 opt_font = EARGF(usage());
1937 break;
1938 case 'g':
1939 xw.gm = XParseGeometry(EARGF(usage()),
1940 &xw.l, &xw.t, &cols, &rows);
1941 break;
1942 case 'i':
1943 xw.isfixed = 1;
1944 break;
1945 case 'o':
1946 opt_io = EARGF(usage());
1947 break;
1948 case 'l':
1949 opt_line = EARGF(usage());
1950 break;
1951 case 'n':
1952 opt_name = EARGF(usage());
1953 break;
1954 case 't':
1955 case 'T':
1956 opt_title = EARGF(usage());
1957 break;
1958 case 'w':
1959 opt_embed = EARGF(usage());
1960 break;
1961 case 'v':
1962 die("%s " VERSION "\n", argv0);
1963 break;
1964 default:
1965 usage();
1966 } ARGEND;
1967
1968 run:
1969 if (argc > 0) /* eat all remaining arguments */
1970 opt_cmd = argv;
1971
1972 if (!opt_title)
1973 opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];
1974
1975 setlocale(LC_CTYPE, "");
1976 XSetLocaleModifiers("");
1977 cols = MAX(cols, 1);
1978 rows = MAX(rows, 1);
1979 tnew(cols, rows);
1980 xinit(cols, rows);
1981 xsetenv();
1982 selinit();
1983 run();
1984
1985 return 0;
1986 }