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865dacc83b23cd467d6f9dc02bb7d9f3c2e82463
[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[16];
230 static int frclen = 0;
231 static char *usedfont = NULL;
232 static double usedfontsize = 0;
233 static double defaultfontsize = 0;
234
235 static char *opt_class = NULL;
236 static char **opt_cmd = NULL;
237 static char *opt_embed = NULL;
238 static char *opt_font = NULL;
239 static char *opt_io = NULL;
240 static char *opt_line = NULL;
241 static char *opt_name = NULL;
242 static char *opt_title = NULL;
243
244 static int oldbutton = 3; /* button event on startup: 3 = release */
245
246 void
247 clipcopy(const Arg *dummy)
248 {
249 Atom clipboard;
250
251 free(xsel.clipboard);
252 xsel.clipboard = NULL;
253
254 if (xsel.primary != NULL) {
255 xsel.clipboard = xstrdup(xsel.primary);
256 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
257 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
258 }
259 }
260
261 void
262 clippaste(const Arg *dummy)
263 {
264 Atom clipboard;
265
266 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
267 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
268 xw.win, CurrentTime);
269 }
270
271 void
272 selpaste(const Arg *dummy)
273 {
274 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
275 xw.win, CurrentTime);
276 }
277
278 void
279 numlock(const Arg *dummy)
280 {
281 win.mode ^= MODE_NUMLOCK;
282 }
283
284 void
285 zoom(const Arg *arg)
286 {
287 Arg larg;
288
289 larg.f = usedfontsize + arg->f;
290 zoomabs(&larg);
291 }
292
293 void
294 zoomabs(const Arg *arg)
295 {
296 xunloadfonts();
297 xloadfonts(usedfont, arg->f);
298 cresize(0, 0);
299 redraw();
300 xhints();
301 }
302
303 void
304 zoomreset(const Arg *arg)
305 {
306 Arg larg;
307
308 if (defaultfontsize > 0) {
309 larg.f = defaultfontsize;
310 zoomabs(&larg);
311 }
312 }
313
314 int
315 evcol(XEvent *e)
316 {
317 int x = e->xbutton.x - borderpx;
318 LIMIT(x, 0, win.tw - 1);
319 return x / win.cw;
320 }
321
322 int
323 evrow(XEvent *e)
324 {
325 int y = e->xbutton.y - borderpx;
326 LIMIT(y, 0, win.th - 1);
327 return y / win.ch;
328 }
329
330 void
331 mousesel(XEvent *e, int done)
332 {
333 int type, seltype = SEL_REGULAR;
334 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
335
336 for (type = 1; type < LEN(selmasks); ++type) {
337 if (match(selmasks[type], state)) {
338 seltype = type;
339 break;
340 }
341 }
342 selextend(evcol(e), evrow(e), seltype, done);
343 if (done)
344 setsel(getsel(), e->xbutton.time);
345 }
346
347 void
348 mousereport(XEvent *e)
349 {
350 int len, x = evcol(e), y = evrow(e),
351 button = e->xbutton.button, state = e->xbutton.state;
352 char buf[40];
353 static int ox, oy;
354
355 /* from urxvt */
356 if (e->xbutton.type == MotionNotify) {
357 if (x == ox && y == oy)
358 return;
359 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
360 return;
361 /* MOUSE_MOTION: no reporting if no button is pressed */
362 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
363 return;
364
365 button = oldbutton + 32;
366 ox = x;
367 oy = y;
368 } else {
369 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
370 button = 3;
371 } else {
372 button -= Button1;
373 if (button >= 3)
374 button += 64 - 3;
375 }
376 if (e->xbutton.type == ButtonPress) {
377 oldbutton = button;
378 ox = x;
379 oy = y;
380 } else if (e->xbutton.type == ButtonRelease) {
381 oldbutton = 3;
382 /* MODE_MOUSEX10: no button release reporting */
383 if (IS_SET(MODE_MOUSEX10))
384 return;
385 if (button == 64 || button == 65)
386 return;
387 }
388 }
389
390 if (!IS_SET(MODE_MOUSEX10)) {
391 button += ((state & ShiftMask ) ? 4 : 0)
392 + ((state & Mod4Mask ) ? 8 : 0)
393 + ((state & ControlMask) ? 16 : 0);
394 }
395
396 if (IS_SET(MODE_MOUSESGR)) {
397 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
398 button, x+1, y+1,
399 e->xbutton.type == ButtonRelease ? 'm' : 'M');
400 } else if (x < 223 && y < 223) {
401 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
402 32+button, 32+x+1, 32+y+1);
403 } else {
404 return;
405 }
406
407 ttywrite(buf, len, 0);
408 }
409
410 void
411 bpress(XEvent *e)
412 {
413 struct timespec now;
414 MouseShortcut *ms;
415 int snap;
416
417 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
418 mousereport(e);
419 return;
420 }
421
422 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
423 if (e->xbutton.button == ms->b
424 && match(ms->mask, e->xbutton.state)) {
425 ttywrite(ms->s, strlen(ms->s), 1);
426 return;
427 }
428 }
429
430 if (e->xbutton.button == Button1) {
431 /*
432 * If the user clicks below predefined timeouts specific
433 * snapping behaviour is exposed.
434 */
435 clock_gettime(CLOCK_MONOTONIC, &now);
436 if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
437 snap = SNAP_LINE;
438 } else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
439 snap = SNAP_WORD;
440 } else {
441 snap = 0;
442 }
443 xsel.tclick2 = xsel.tclick1;
444 xsel.tclick1 = now;
445
446 selstart(evcol(e), evrow(e), snap);
447 }
448 }
449
450 void
451 propnotify(XEvent *e)
452 {
453 XPropertyEvent *xpev;
454 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
455
456 xpev = &e->xproperty;
457 if (xpev->state == PropertyNewValue &&
458 (xpev->atom == XA_PRIMARY ||
459 xpev->atom == clipboard)) {
460 selnotify(e);
461 }
462 }
463
464 void
465 selnotify(XEvent *e)
466 {
467 ulong nitems, ofs, rem;
468 int format;
469 uchar *data, *last, *repl;
470 Atom type, incratom, property = None;
471
472 incratom = XInternAtom(xw.dpy, "INCR", 0);
473
474 ofs = 0;
475 if (e->type == SelectionNotify)
476 property = e->xselection.property;
477 else if (e->type == PropertyNotify)
478 property = e->xproperty.atom;
479
480 if (property == None)
481 return;
482
483 do {
484 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
485 BUFSIZ/4, False, AnyPropertyType,
486 &type, &format, &nitems, &rem,
487 &data)) {
488 fprintf(stderr, "Clipboard allocation failed\n");
489 return;
490 }
491
492 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
493 /*
494 * If there is some PropertyNotify with no data, then
495 * this is the signal of the selection owner that all
496 * data has been transferred. We won't need to receive
497 * PropertyNotify events anymore.
498 */
499 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
500 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
501 &xw.attrs);
502 }
503
504 if (type == incratom) {
505 /*
506 * Activate the PropertyNotify events so we receive
507 * when the selection owner does send us the next
508 * chunk of data.
509 */
510 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
511 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
512 &xw.attrs);
513
514 /*
515 * Deleting the property is the transfer start signal.
516 */
517 XDeleteProperty(xw.dpy, xw.win, (int)property);
518 continue;
519 }
520
521 /*
522 * As seen in getsel:
523 * Line endings are inconsistent in the terminal and GUI world
524 * copy and pasting. When receiving some selection data,
525 * replace all '\n' with '\r'.
526 * FIXME: Fix the computer world.
527 */
528 repl = data;
529 last = data + nitems * format / 8;
530 while ((repl = memchr(repl, '\n', last - repl))) {
531 *repl++ = '\r';
532 }
533
534 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
535 ttywrite("\033[200~", 6, 0);
536 ttywrite((char *)data, nitems * format / 8, 1);
537 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
538 ttywrite("\033[201~", 6, 0);
539 XFree(data);
540 /* number of 32-bit chunks returned */
541 ofs += nitems * format / 32;
542 } while (rem > 0);
543
544 /*
545 * Deleting the property again tells the selection owner to send the
546 * next data chunk in the property.
547 */
548 XDeleteProperty(xw.dpy, xw.win, (int)property);
549 }
550
551 void
552 xclipcopy(void)
553 {
554 clipcopy(NULL);
555 }
556
557 void
558 selclear_(XEvent *e)
559 {
560 selclear();
561 }
562
563 void
564 selrequest(XEvent *e)
565 {
566 XSelectionRequestEvent *xsre;
567 XSelectionEvent xev;
568 Atom xa_targets, string, clipboard;
569 char *seltext;
570
571 xsre = (XSelectionRequestEvent *) e;
572 xev.type = SelectionNotify;
573 xev.requestor = xsre->requestor;
574 xev.selection = xsre->selection;
575 xev.target = xsre->target;
576 xev.time = xsre->time;
577 if (xsre->property == None)
578 xsre->property = xsre->target;
579
580 /* reject */
581 xev.property = None;
582
583 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
584 if (xsre->target == xa_targets) {
585 /* respond with the supported type */
586 string = xsel.xtarget;
587 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
588 XA_ATOM, 32, PropModeReplace,
589 (uchar *) &string, 1);
590 xev.property = xsre->property;
591 } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
592 /*
593 * xith XA_STRING non ascii characters may be incorrect in the
594 * requestor. It is not our problem, use utf8.
595 */
596 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
597 if (xsre->selection == XA_PRIMARY) {
598 seltext = xsel.primary;
599 } else if (xsre->selection == clipboard) {
600 seltext = xsel.clipboard;
601 } else {
602 fprintf(stderr,
603 "Unhandled clipboard selection 0x%lx\n",
604 xsre->selection);
605 return;
606 }
607 if (seltext != NULL) {
608 XChangeProperty(xsre->display, xsre->requestor,
609 xsre->property, xsre->target,
610 8, PropModeReplace,
611 (uchar *)seltext, strlen(seltext));
612 xev.property = xsre->property;
613 }
614 }
615
616 /* all done, send a notification to the listener */
617 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
618 fprintf(stderr, "Error sending SelectionNotify event\n");
619 }
620
621 void
622 setsel(char *str, Time t)
623 {
624 if (!str)
625 return;
626
627 free(xsel.primary);
628 xsel.primary = str;
629
630 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
631 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
632 selclear();
633 }
634
635 void
636 xsetsel(char *str)
637 {
638 setsel(str, CurrentTime);
639 }
640
641 void
642 brelease(XEvent *e)
643 {
644 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
645 mousereport(e);
646 return;
647 }
648
649 if (e->xbutton.button == Button2)
650 selpaste(NULL);
651 else if (e->xbutton.button == Button1)
652 mousesel(e, 1);
653 }
654
655 void
656 bmotion(XEvent *e)
657 {
658 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
659 mousereport(e);
660 return;
661 }
662
663 mousesel(e, 0);
664 }
665
666 void
667 cresize(int width, int height)
668 {
669 int col, row;
670
671 if (width != 0)
672 win.w = width;
673 if (height != 0)
674 win.h = height;
675
676 col = (win.w - 2 * borderpx) / win.cw;
677 row = (win.h - 2 * borderpx) / win.ch;
678 col = MAX(1, col);
679 row = MAX(1, row);
680
681 tresize(col, row);
682 xresize(col, row);
683 ttyresize(win.tw, win.th);
684 }
685
686 void
687 xresize(int col, int row)
688 {
689 win.tw = col * win.cw;
690 win.th = row * win.ch;
691
692 XFreePixmap(xw.dpy, xw.buf);
693 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
694 DefaultDepth(xw.dpy, xw.scr));
695 XftDrawChange(xw.draw, xw.buf);
696 xclear(0, 0, win.w, win.h);
697
698 /* resize to new width */
699 xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
700 }
701
702 ushort
703 sixd_to_16bit(int x)
704 {
705 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
706 }
707
708 int
709 xloadcolor(int i, const char *name, Color *ncolor)
710 {
711 XRenderColor color = { .alpha = 0xffff };
712
713 if (!name) {
714 if (BETWEEN(i, 16, 255)) { /* 256 color */
715 if (i < 6*6*6+16) { /* same colors as xterm */
716 color.red = sixd_to_16bit( ((i-16)/36)%6 );
717 color.green = sixd_to_16bit( ((i-16)/6) %6 );
718 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
719 } else { /* greyscale */
720 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
721 color.green = color.blue = color.red;
722 }
723 return XftColorAllocValue(xw.dpy, xw.vis,
724 xw.cmap, &color, ncolor);
725 } else
726 name = colorname[i];
727 }
728
729 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
730 }
731
732 void
733 xloadcols(void)
734 {
735 int i;
736 static int loaded;
737 Color *cp;
738
739 if (loaded) {
740 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
741 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
742 } else {
743 dc.collen = MAX(LEN(colorname), 256);
744 dc.col = xmalloc(dc.collen * sizeof(Color));
745 }
746
747 for (i = 0; i < dc.collen; i++)
748 if (!xloadcolor(i, NULL, &dc.col[i])) {
749 if (colorname[i])
750 die("could not allocate color '%s'\n", colorname[i]);
751 else
752 die("could not allocate color %d\n", i);
753 }
754 loaded = 1;
755 }
756
757 int
758 xsetcolorname(int x, const char *name)
759 {
760 Color ncolor;
761
762 if (!BETWEEN(x, 0, dc.collen))
763 return 1;
764
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 /*
1247 * Overwrite or create the new cache entry.
1248 */
1249 if (frclen >= LEN(frc)) {
1250 frclen = LEN(frc) - 1;
1251 XftFontClose(xw.dpy, frc[frclen].font);
1252 frc[frclen].unicodep = 0;
1253 }
1254
1255 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1256 fontpattern);
1257 if (!frc[frclen].font)
1258 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1259 strerror(errno));
1260 frc[frclen].flags = frcflags;
1261 frc[frclen].unicodep = rune;
1262
1263 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1264
1265 f = frclen;
1266 frclen++;
1267
1268 FcPatternDestroy(fcpattern);
1269 FcCharSetDestroy(fccharset);
1270 }
1271
1272 specs[numspecs].font = frc[f].font;
1273 specs[numspecs].glyph = glyphidx;
1274 specs[numspecs].x = (short)xp;
1275 specs[numspecs].y = (short)yp;
1276 xp += runewidth;
1277 numspecs++;
1278 }
1279
1280 return numspecs;
1281 }
1282
1283 void
1284 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1285 {
1286 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1287 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1288 width = charlen * win.cw;
1289 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1290 XRenderColor colfg, colbg;
1291 XRectangle r;
1292
1293 /* Fallback on color display for attributes not supported by the font */
1294 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1295 if (dc.ibfont.badslant || dc.ibfont.badweight)
1296 base.fg = defaultattr;
1297 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1298 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1299 base.fg = defaultattr;
1300 }
1301
1302 if (IS_TRUECOL(base.fg)) {
1303 colfg.alpha = 0xffff;
1304 colfg.red = TRUERED(base.fg);
1305 colfg.green = TRUEGREEN(base.fg);
1306 colfg.blue = TRUEBLUE(base.fg);
1307 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1308 fg = &truefg;
1309 } else {
1310 fg = &dc.col[base.fg];
1311 }
1312
1313 if (IS_TRUECOL(base.bg)) {
1314 colbg.alpha = 0xffff;
1315 colbg.green = TRUEGREEN(base.bg);
1316 colbg.red = TRUERED(base.bg);
1317 colbg.blue = TRUEBLUE(base.bg);
1318 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1319 bg = &truebg;
1320 } else {
1321 bg = &dc.col[base.bg];
1322 }
1323
1324 /* Change basic system colors [0-7] to bright system colors [8-15] */
1325 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1326 fg = &dc.col[base.fg + 8];
1327
1328 if (IS_SET(MODE_REVERSE)) {
1329 if (fg == &dc.col[defaultfg]) {
1330 fg = &dc.col[defaultbg];
1331 } else {
1332 colfg.red = ~fg->color.red;
1333 colfg.green = ~fg->color.green;
1334 colfg.blue = ~fg->color.blue;
1335 colfg.alpha = fg->color.alpha;
1336 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1337 &revfg);
1338 fg = &revfg;
1339 }
1340
1341 if (bg == &dc.col[defaultbg]) {
1342 bg = &dc.col[defaultfg];
1343 } else {
1344 colbg.red = ~bg->color.red;
1345 colbg.green = ~bg->color.green;
1346 colbg.blue = ~bg->color.blue;
1347 colbg.alpha = bg->color.alpha;
1348 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1349 &revbg);
1350 bg = &revbg;
1351 }
1352 }
1353
1354 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1355 colfg.red = fg->color.red / 2;
1356 colfg.green = fg->color.green / 2;
1357 colfg.blue = fg->color.blue / 2;
1358 colfg.alpha = fg->color.alpha;
1359 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1360 fg = &revfg;
1361 }
1362
1363 if (base.mode & ATTR_REVERSE) {
1364 temp = fg;
1365 fg = bg;
1366 bg = temp;
1367 }
1368
1369 if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
1370 fg = bg;
1371
1372 if (base.mode & ATTR_INVISIBLE)
1373 fg = bg;
1374
1375 /* Intelligent cleaning up of the borders. */
1376 if (x == 0) {
1377 xclear(0, (y == 0)? 0 : winy, borderpx,
1378 winy + win.ch +
1379 ((winy + win.ch >= borderpx + win.th)? win.h : 0));
1380 }
1381 if (winx + width >= borderpx + win.tw) {
1382 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1383 ((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
1384 }
1385 if (y == 0)
1386 xclear(winx, 0, winx + width, borderpx);
1387 if (winy + win.ch >= borderpx + win.th)
1388 xclear(winx, winy + win.ch, winx + width, win.h);
1389
1390 /* Clean up the region we want to draw to. */
1391 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1392
1393 /* Set the clip region because Xft is sometimes dirty. */
1394 r.x = 0;
1395 r.y = 0;
1396 r.height = win.ch;
1397 r.width = width;
1398 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1399
1400 /* Render the glyphs. */
1401 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1402
1403 /* Render underline and strikethrough. */
1404 if (base.mode & ATTR_UNDERLINE) {
1405 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
1406 width, 1);
1407 }
1408
1409 if (base.mode & ATTR_STRUCK) {
1410 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
1411 width, 1);
1412 }
1413
1414 /* Reset clip to none. */
1415 XftDrawSetClip(xw.draw, 0);
1416 }
1417
1418 void
1419 xdrawglyph(Glyph g, int x, int y)
1420 {
1421 int numspecs;
1422 XftGlyphFontSpec spec;
1423
1424 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1425 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1426 }
1427
1428 void
1429 xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
1430 {
1431 Color drawcol;
1432
1433 /* remove the old cursor */
1434 if (selected(ox, oy))
1435 og.mode ^= ATTR_REVERSE;
1436 xdrawglyph(og, ox, oy);
1437
1438 if (IS_SET(MODE_HIDE))
1439 return;
1440
1441 /*
1442 * Select the right color for the right mode.
1443 */
1444 g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
1445
1446 if (IS_SET(MODE_REVERSE)) {
1447 g.mode |= ATTR_REVERSE;
1448 g.bg = defaultfg;
1449 if (selected(cx, cy)) {
1450 drawcol = dc.col[defaultcs];
1451 g.fg = defaultrcs;
1452 } else {
1453 drawcol = dc.col[defaultrcs];
1454 g.fg = defaultcs;
1455 }
1456 } else {
1457 if (selected(cx, cy)) {
1458 g.fg = defaultfg;
1459 g.bg = defaultrcs;
1460 } else {
1461 g.fg = defaultbg;
1462 g.bg = defaultcs;
1463 }
1464 drawcol = dc.col[g.bg];
1465 }
1466
1467 /* draw the new one */
1468 if (IS_SET(MODE_FOCUSED)) {
1469 switch (win.cursor) {
1470 case 7: /* st extension: snowman (U+2603) */
1471 g.u = 0x2603;
1472 case 0: /* Blinking Block */
1473 case 1: /* Blinking Block (Default) */
1474 case 2: /* Steady Block */
1475 xdrawglyph(g, cx, cy);
1476 break;
1477 case 3: /* Blinking Underline */
1478 case 4: /* Steady Underline */
1479 XftDrawRect(xw.draw, &drawcol,
1480 borderpx + cx * win.cw,
1481 borderpx + (cy + 1) * win.ch - \
1482 cursorthickness,
1483 win.cw, cursorthickness);
1484 break;
1485 case 5: /* Blinking bar */
1486 case 6: /* Steady bar */
1487 XftDrawRect(xw.draw, &drawcol,
1488 borderpx + cx * win.cw,
1489 borderpx + cy * win.ch,
1490 cursorthickness, win.ch);
1491 break;
1492 }
1493 } else {
1494 XftDrawRect(xw.draw, &drawcol,
1495 borderpx + cx * win.cw,
1496 borderpx + cy * win.ch,
1497 win.cw - 1, 1);
1498 XftDrawRect(xw.draw, &drawcol,
1499 borderpx + cx * win.cw,
1500 borderpx + cy * win.ch,
1501 1, win.ch - 1);
1502 XftDrawRect(xw.draw, &drawcol,
1503 borderpx + (cx + 1) * win.cw - 1,
1504 borderpx + cy * win.ch,
1505 1, win.ch - 1);
1506 XftDrawRect(xw.draw, &drawcol,
1507 borderpx + cx * win.cw,
1508 borderpx + (cy + 1) * win.ch - 1,
1509 win.cw, 1);
1510 }
1511 }
1512
1513 void
1514 xsetenv(void)
1515 {
1516 char buf[sizeof(long) * 8 + 1];
1517
1518 snprintf(buf, sizeof(buf), "%lu", xw.win);
1519 setenv("WINDOWID", buf, 1);
1520 }
1521
1522 void
1523 xsettitle(char *p)
1524 {
1525 XTextProperty prop;
1526 DEFAULT(p, opt_title);
1527
1528 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1529 &prop);
1530 XSetWMName(xw.dpy, xw.win, &prop);
1531 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1532 XFree(prop.value);
1533 }
1534
1535 int
1536 xstartdraw(void)
1537 {
1538 return IS_SET(MODE_VISIBLE);
1539 }
1540
1541 void
1542 xdrawline(Line line, int x1, int y1, int x2)
1543 {
1544 int i, x, ox, numspecs;
1545 Glyph base, new;
1546 XftGlyphFontSpec *specs = xw.specbuf;
1547
1548 numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
1549 i = ox = 0;
1550 for (x = x1; x < x2 && i < numspecs; x++) {
1551 new = line[x];
1552 if (new.mode == ATTR_WDUMMY)
1553 continue;
1554 if (selected(x, y1))
1555 new.mode ^= ATTR_REVERSE;
1556 if (i > 0 && ATTRCMP(base, new)) {
1557 xdrawglyphfontspecs(specs, base, i, ox, y1);
1558 specs += i;
1559 numspecs -= i;
1560 i = 0;
1561 }
1562 if (i == 0) {
1563 ox = x;
1564 base = new;
1565 }
1566 i++;
1567 }
1568 if (i > 0)
1569 xdrawglyphfontspecs(specs, base, i, ox, y1);
1570 }
1571
1572 void
1573 xfinishdraw(void)
1574 {
1575 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1576 win.h, 0, 0);
1577 XSetForeground(xw.dpy, dc.gc,
1578 dc.col[IS_SET(MODE_REVERSE)?
1579 defaultfg : defaultbg].pixel);
1580 }
1581
1582 void
1583 xximspot(int x, int y)
1584 {
1585 XPoint spot = { borderpx + x * win.cw, borderpx + (y + 1) * win.ch };
1586 XVaNestedList attr = XVaCreateNestedList(0, XNSpotLocation, &spot, NULL);
1587
1588 XSetICValues(xw.xic, XNPreeditAttributes, attr, NULL);
1589 XFree(attr);
1590 }
1591
1592 void
1593 expose(XEvent *ev)
1594 {
1595 redraw();
1596 }
1597
1598 void
1599 visibility(XEvent *ev)
1600 {
1601 XVisibilityEvent *e = &ev->xvisibility;
1602
1603 MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
1604 }
1605
1606 void
1607 unmap(XEvent *ev)
1608 {
1609 win.mode &= ~MODE_VISIBLE;
1610 }
1611
1612 void
1613 xsetpointermotion(int set)
1614 {
1615 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1616 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1617 }
1618
1619 void
1620 xsetmode(int set, unsigned int flags)
1621 {
1622 int mode = win.mode;
1623 MODBIT(win.mode, set, flags);
1624 if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
1625 redraw();
1626 }
1627
1628 int
1629 xsetcursor(int cursor)
1630 {
1631 DEFAULT(cursor, 1);
1632 if (!BETWEEN(cursor, 0, 6))
1633 return 1;
1634 win.cursor = cursor;
1635 return 0;
1636 }
1637
1638 void
1639 xseturgency(int add)
1640 {
1641 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1642
1643 MODBIT(h->flags, add, XUrgencyHint);
1644 XSetWMHints(xw.dpy, xw.win, h);
1645 XFree(h);
1646 }
1647
1648 void
1649 xbell(void)
1650 {
1651 if (!(IS_SET(MODE_FOCUSED)))
1652 xseturgency(1);
1653 if (bellvolume)
1654 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1655 }
1656
1657 void
1658 focus(XEvent *ev)
1659 {
1660 XFocusChangeEvent *e = &ev->xfocus;
1661
1662 if (e->mode == NotifyGrab)
1663 return;
1664
1665 if (ev->type == FocusIn) {
1666 XSetICFocus(xw.xic);
1667 win.mode |= MODE_FOCUSED;
1668 xseturgency(0);
1669 if (IS_SET(MODE_FOCUS))
1670 ttywrite("\033[I", 3, 0);
1671 } else {
1672 XUnsetICFocus(xw.xic);
1673 win.mode &= ~MODE_FOCUSED;
1674 if (IS_SET(MODE_FOCUS))
1675 ttywrite("\033[O", 3, 0);
1676 }
1677 }
1678
1679 int
1680 match(uint mask, uint state)
1681 {
1682 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1683 }
1684
1685 char*
1686 kmap(KeySym k, uint state)
1687 {
1688 Key *kp;
1689 int i;
1690
1691 /* Check for mapped keys out of X11 function keys. */
1692 for (i = 0; i < LEN(mappedkeys); i++) {
1693 if (mappedkeys[i] == k)
1694 break;
1695 }
1696 if (i == LEN(mappedkeys)) {
1697 if ((k & 0xFFFF) < 0xFD00)
1698 return NULL;
1699 }
1700
1701 for (kp = key; kp < key + LEN(key); kp++) {
1702 if (kp->k != k)
1703 continue;
1704
1705 if (!match(kp->mask, state))
1706 continue;
1707
1708 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1709 continue;
1710 if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
1711 continue;
1712
1713 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1714 continue;
1715
1716 return kp->s;
1717 }
1718
1719 return NULL;
1720 }
1721
1722 void
1723 kpress(XEvent *ev)
1724 {
1725 XKeyEvent *e = &ev->xkey;
1726 KeySym ksym;
1727 char buf[32], *customkey;
1728 int len;
1729 Rune c;
1730 Status status;
1731 Shortcut *bp;
1732
1733 if (IS_SET(MODE_KBDLOCK))
1734 return;
1735
1736 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
1737 /* 1. shortcuts */
1738 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
1739 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1740 bp->func(&(bp->arg));
1741 return;
1742 }
1743 }
1744
1745 /* 2. custom keys from config.h */
1746 if ((customkey = kmap(ksym, e->state))) {
1747 ttywrite(customkey, strlen(customkey), 1);
1748 return;
1749 }
1750
1751 /* 3. composed string from input method */
1752 if (len == 0)
1753 return;
1754 if (len == 1 && e->state & Mod1Mask) {
1755 if (IS_SET(MODE_8BIT)) {
1756 if (*buf < 0177) {
1757 c = *buf | 0x80;
1758 len = utf8encode(c, buf);
1759 }
1760 } else {
1761 buf[1] = buf[0];
1762 buf[0] = '\033';
1763 len = 2;
1764 }
1765 }
1766 ttywrite(buf, len, 1);
1767 }
1768
1769
1770 void
1771 cmessage(XEvent *e)
1772 {
1773 /*
1774 * See xembed specs
1775 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1776 */
1777 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1778 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1779 win.mode |= MODE_FOCUSED;
1780 xseturgency(0);
1781 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1782 win.mode &= ~MODE_FOCUSED;
1783 }
1784 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1785 ttyhangup();
1786 exit(0);
1787 }
1788 }
1789
1790 void
1791 resize(XEvent *e)
1792 {
1793 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1794 return;
1795
1796 cresize(e->xconfigure.width, e->xconfigure.height);
1797 }
1798
1799 void
1800 run(void)
1801 {
1802 XEvent ev;
1803 int w = win.w, h = win.h;
1804 fd_set rfd;
1805 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
1806 int ttyfd;
1807 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
1808 long deltatime;
1809
1810 /* Waiting for window mapping */
1811 do {
1812 XNextEvent(xw.dpy, &ev);
1813 /*
1814 * This XFilterEvent call is required because of XOpenIM. It
1815 * does filter out the key event and some client message for
1816 * the input method too.
1817 */
1818 if (XFilterEvent(&ev, None))
1819 continue;
1820 if (ev.type == ConfigureNotify) {
1821 w = ev.xconfigure.width;
1822 h = ev.xconfigure.height;
1823 }
1824 } while (ev.type != MapNotify);
1825
1826 ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
1827 cresize(w, h);
1828
1829 clock_gettime(CLOCK_MONOTONIC, &last);
1830 lastblink = last;
1831
1832 for (xev = actionfps;;) {
1833 FD_ZERO(&rfd);
1834 FD_SET(ttyfd, &rfd);
1835 FD_SET(xfd, &rfd);
1836
1837 if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1838 if (errno == EINTR)
1839 continue;
1840 die("select failed: %s\n", strerror(errno));
1841 }
1842 if (FD_ISSET(ttyfd, &rfd)) {
1843 ttyread();
1844 if (blinktimeout) {
1845 blinkset = tattrset(ATTR_BLINK);
1846 if (!blinkset)
1847 MODBIT(win.mode, 0, MODE_BLINK);
1848 }
1849 }
1850
1851 if (FD_ISSET(xfd, &rfd))
1852 xev = actionfps;
1853
1854 clock_gettime(CLOCK_MONOTONIC, &now);
1855 drawtimeout.tv_sec = 0;
1856 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
1857 tv = &drawtimeout;
1858
1859 dodraw = 0;
1860 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
1861 tsetdirtattr(ATTR_BLINK);
1862 win.mode ^= MODE_BLINK;
1863 lastblink = now;
1864 dodraw = 1;
1865 }
1866 deltatime = TIMEDIFF(now, last);
1867 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
1868 dodraw = 1;
1869 last = now;
1870 }
1871
1872 if (dodraw) {
1873 while (XPending(xw.dpy)) {
1874 XNextEvent(xw.dpy, &ev);
1875 if (XFilterEvent(&ev, None))
1876 continue;
1877 if (handler[ev.type])
1878 (handler[ev.type])(&ev);
1879 }
1880
1881 draw();
1882 XFlush(xw.dpy);
1883
1884 if (xev && !FD_ISSET(xfd, &rfd))
1885 xev--;
1886 if (!FD_ISSET(ttyfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
1887 if (blinkset) {
1888 if (TIMEDIFF(now, lastblink) \
1889 > blinktimeout) {
1890 drawtimeout.tv_nsec = 1000;
1891 } else {
1892 drawtimeout.tv_nsec = (1E6 * \
1893 (blinktimeout - \
1894 TIMEDIFF(now,
1895 lastblink)));
1896 }
1897 drawtimeout.tv_sec = \
1898 drawtimeout.tv_nsec / 1E9;
1899 drawtimeout.tv_nsec %= (long)1E9;
1900 } else {
1901 tv = NULL;
1902 }
1903 }
1904 }
1905 }
1906 }
1907
1908 void
1909 usage(void)
1910 {
1911 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
1912 " [-n name] [-o file]\n"
1913 " [-T title] [-t title] [-w windowid]"
1914 " [[-e] command [args ...]]\n"
1915 " %s [-aiv] [-c class] [-f font] [-g geometry]"
1916 " [-n name] [-o file]\n"
1917 " [-T title] [-t title] [-w windowid] -l line"
1918 " [stty_args ...]\n", argv0, argv0);
1919 }
1920
1921 int
1922 main(int argc, char *argv[])
1923 {
1924 xw.l = xw.t = 0;
1925 xw.isfixed = False;
1926 win.cursor = cursorshape;
1927
1928 ARGBEGIN {
1929 case 'a':
1930 allowaltscreen = 0;
1931 break;
1932 case 'c':
1933 opt_class = EARGF(usage());
1934 break;
1935 case 'e':
1936 if (argc > 0)
1937 --argc, ++argv;
1938 goto run;
1939 case 'f':
1940 opt_font = EARGF(usage());
1941 break;
1942 case 'g':
1943 xw.gm = XParseGeometry(EARGF(usage()),
1944 &xw.l, &xw.t, &cols, &rows);
1945 break;
1946 case 'i':
1947 xw.isfixed = 1;
1948 break;
1949 case 'o':
1950 opt_io = EARGF(usage());
1951 break;
1952 case 'l':
1953 opt_line = EARGF(usage());
1954 break;
1955 case 'n':
1956 opt_name = EARGF(usage());
1957 break;
1958 case 't':
1959 case 'T':
1960 opt_title = EARGF(usage());
1961 break;
1962 case 'w':
1963 opt_embed = EARGF(usage());
1964 break;
1965 case 'v':
1966 die("%s " VERSION "\n", argv0);
1967 break;
1968 default:
1969 usage();
1970 } ARGEND;
1971
1972 run:
1973 if (argc > 0) /* eat all remaining arguments */
1974 opt_cmd = argv;
1975
1976 if (!opt_title)
1977 opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];
1978
1979 setlocale(LC_CTYPE, "");
1980 XSetLocaleModifiers("");
1981 cols = MAX(cols, 1);
1982 rows = MAX(rows, 1);
1983 tnew(cols, rows);
1984 xinit(cols, rows);
1985 xsetenv();
1986 selinit();
1987 run();
1988
1989 return 0;
1990 }