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0 /* See LICENSE for license details. */
1 #include <errno.h>
2 #include <math.h>
3 #include <limits.h>
4 #include <locale.h>
5 #include <signal.h>
6 #include <sys/select.h>
7 #include <time.h>
8 #include <unistd.h>
9 #include <libgen.h>
10 #include <X11/Xatom.h>
11 #include <X11/Xlib.h>
12 #include <X11/cursorfont.h>
13 #include <X11/keysym.h>
14 #include <X11/Xft/Xft.h>
15 #include <X11/XKBlib.h>
16
17 char *argv0;
18 #include "arg.h"
19 #include "st.h"
20 #include "win.h"
21
22 /* types used in config.h */
23 typedef struct {
24 uint mod;
25 KeySym keysym;
26 void (*func)(const Arg *);
27 const Arg arg;
28 } Shortcut;
29
30 typedef struct {
31 uint mod;
32 uint button;
33 void (*func)(const Arg *);
34 const Arg arg;
35 uint release;
36 int altscrn;
37 } MouseShortcut;
38
39 typedef struct {
40 KeySym k;
41 uint mask;
42 char *s;
43 /* three-valued logic variables: 0 indifferent, 1 on, -1 off */
44 signed char appkey; /* application keypad */
45 signed char appcursor; /* application cursor */
46 } Key;
47
48 /* X modifiers */
49 #define XK_ANY_MOD UINT_MAX
50 #define XK_NO_MOD 0
51 #define XK_SWITCH_MOD (1<<13|1<<14)
52
53 /* function definitions used in config.h */
54 static void clipcopy(const Arg *);
55 static void clippaste(const Arg *);
56 static void numlock(const Arg *);
57 static void selpaste(const Arg *);
58 static void zoom(const Arg *);
59 static void zoomabs(const Arg *);
60 static void zoomreset(const Arg *);
61 static void ttysend(const Arg *);
62
63 /* config.h for applying patches and the configuration. */
64 #include "config.h"
65
66 /* XEMBED messages */
67 #define XEMBED_FOCUS_IN 4
68 #define XEMBED_FOCUS_OUT 5
69
70 /* macros */
71 #define IS_SET(flag) ((win.mode & (flag)) != 0)
72 #define TRUERED(x) (((x) & 0xff0000) >> 8)
73 #define TRUEGREEN(x) (((x) & 0xff00))
74 #define TRUEBLUE(x) (((x) & 0xff) << 8)
75
76 typedef XftDraw *Draw;
77 typedef XftColor Color;
78 typedef XftGlyphFontSpec GlyphFontSpec;
79
80 /* Purely graphic info */
81 typedef struct {
82 int tw, th; /* tty width and height */
83 int w, h; /* window width and height */
84 int ch; /* char height */
85 int cw; /* char width */
86 int mode; /* window state/mode flags */
87 int cursor; /* cursor style */
88 } TermWindow;
89
90 typedef struct {
91 Display *dpy;
92 Colormap cmap;
93 Window win;
94 Drawable buf;
95 GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
96 Atom xembed, wmdeletewin, netwmname, netwmiconname, netwmpid;
97 struct {
98 XIM xim;
99 XIC xic;
100 XPoint spot;
101 XVaNestedList spotlist;
102 } ime;
103 Draw draw;
104 Visual *vis;
105 XSetWindowAttributes attrs;
106 int scr;
107 int isfixed; /* is fixed geometry? */
108 int l, t; /* left and top offset */
109 int gm; /* geometry mask */
110 } XWindow;
111
112 typedef struct {
113 Atom xtarget;
114 char *primary, *clipboard;
115 struct timespec tclick1;
116 struct timespec tclick2;
117 } XSelection;
118
119 /* Font structure */
120 #define Font Font_
121 typedef struct {
122 int height;
123 int width;
124 int ascent;
125 int descent;
126 int badslant;
127 int badweight;
128 short lbearing;
129 short rbearing;
130 XftFont *match;
131 FcFontSet *set;
132 FcPattern *pattern;
133 } Font;
134
135 /* Drawing Context */
136 typedef struct {
137 Color *col;
138 size_t collen;
139 Font font, bfont, ifont, ibfont;
140 GC gc;
141 } DC;
142
143 static inline ushort sixd_to_16bit(int);
144 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
145 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
146 static void xdrawglyph(Glyph, int, int);
147 static void xclear(int, int, int, int);
148 static int xgeommasktogravity(int);
149 static int ximopen(Display *);
150 static void ximinstantiate(Display *, XPointer, XPointer);
151 static void ximdestroy(XIM, XPointer, XPointer);
152 static int xicdestroy(XIC, XPointer, XPointer);
153 static void xinit(int, int);
154 static void cresize(int, int);
155 static void xresize(int, int);
156 static void xhints(void);
157 static int xloadcolor(int, const char *, Color *);
158 static int xloadfont(Font *, FcPattern *);
159 static void xloadfonts(const char *, double);
160 static void xunloadfont(Font *);
161 static void xunloadfonts(void);
162 static void xsetenv(void);
163 static void xseturgency(int);
164 static int evcol(XEvent *);
165 static int evrow(XEvent *);
166
167 static void expose(XEvent *);
168 static void visibility(XEvent *);
169 static void unmap(XEvent *);
170 static void kpress(XEvent *);
171 static void cmessage(XEvent *);
172 static void resize(XEvent *);
173 static void focus(XEvent *);
174 static uint buttonmask(uint);
175 static int mouseaction(XEvent *, uint);
176 static void brelease(XEvent *);
177 static void bpress(XEvent *);
178 static void bmotion(XEvent *);
179 static void propnotify(XEvent *);
180 static void selnotify(XEvent *);
181 static void selclear_(XEvent *);
182 static void selrequest(XEvent *);
183 static void setsel(char *, Time);
184 static void mousesel(XEvent *, int);
185 static void mousereport(XEvent *);
186 static char *kmap(KeySym, uint);
187 static int match(uint, uint);
188
189 static void run(void);
190 static void usage(void);
191
192 static void (*handler[LASTEvent])(XEvent *) = {
193 [KeyPress] = kpress,
194 [ClientMessage] = cmessage,
195 [ConfigureNotify] = resize,
196 [VisibilityNotify] = visibility,
197 [UnmapNotify] = unmap,
198 [Expose] = expose,
199 [FocusIn] = focus,
200 [FocusOut] = focus,
201 [MotionNotify] = bmotion,
202 [ButtonPress] = bpress,
203 [ButtonRelease] = brelease,
204 /*
205 * Uncomment if you want the selection to disappear when you select something
206 * different in another window.
207 */
208 /* [SelectionClear] = selclear_, */
209 [SelectionNotify] = selnotify,
210 /*
211 * PropertyNotify is only turned on when there is some INCR transfer happening
212 * for the selection retrieval.
213 */
214 [PropertyNotify] = propnotify,
215 [SelectionRequest] = selrequest,
216 };
217
218 /* Globals */
219 static DC dc;
220 static XWindow xw;
221 static XSelection xsel;
222 static TermWindow win;
223
224 /* Font Ring Cache */
225 enum {
226 FRC_NORMAL,
227 FRC_ITALIC,
228 FRC_BOLD,
229 FRC_ITALICBOLD
230 };
231
232 typedef struct {
233 XftFont *font;
234 int flags;
235 Rune unicodep;
236 } Fontcache;
237
238 /* Fontcache is an array now. A new font will be appended to the array. */
239 static Fontcache *frc = NULL;
240 static int frclen = 0;
241 static int frccap = 0;
242 static char *usedfont = NULL;
243 static double usedfontsize = 0;
244 static double defaultfontsize = 0;
245
246 static char *opt_class = NULL;
247 static char **opt_cmd = NULL;
248 static char *opt_embed = NULL;
249 static char *opt_font = NULL;
250 static char *opt_io = NULL;
251 static char *opt_line = NULL;
252 static char *opt_name = NULL;
253 static char *opt_title = NULL;
254
255 static int oldbutton = 3; /* button event on startup: 3 = release */
256
257 void
258 clipcopy(const Arg *dummy)
259 {
260 Atom clipboard;
261
262 free(xsel.clipboard);
263 xsel.clipboard = NULL;
264
265 if (xsel.primary != NULL) {
266 xsel.clipboard = xstrdup(xsel.primary);
267 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
268 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
269 }
270 }
271
272 void
273 clippaste(const Arg *dummy)
274 {
275 Atom clipboard;
276
277 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
278 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
279 xw.win, CurrentTime);
280 }
281
282 void
283 selpaste(const Arg *dummy)
284 {
285 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
286 xw.win, CurrentTime);
287 }
288
289 void
290 numlock(const Arg *dummy)
291 {
292 win.mode ^= MODE_NUMLOCK;
293 }
294
295 void
296 zoom(const Arg *arg)
297 {
298 Arg larg;
299
300 larg.f = usedfontsize + arg->f;
301 zoomabs(&larg);
302 }
303
304 void
305 zoomabs(const Arg *arg)
306 {
307 xunloadfonts();
308 xloadfonts(usedfont, arg->f);
309 cresize(0, 0);
310 redraw();
311 xhints();
312 }
313
314 void
315 zoomreset(const Arg *arg)
316 {
317 Arg larg;
318
319 if (defaultfontsize > 0) {
320 larg.f = defaultfontsize;
321 zoomabs(&larg);
322 }
323 }
324
325 void
326 ttysend(const Arg *arg)
327 {
328 ttywrite(arg->s, strlen(arg->s), 1);
329 }
330
331 int
332 evcol(XEvent *e)
333 {
334 int x = e->xbutton.x - borderpx;
335 LIMIT(x, 0, win.tw - 1);
336 return x / win.cw;
337 }
338
339 int
340 evrow(XEvent *e)
341 {
342 int y = e->xbutton.y - borderpx;
343 LIMIT(y, 0, win.th - 1);
344 return y / win.ch;
345 }
346
347 void
348 mousesel(XEvent *e, int done)
349 {
350 int type, seltype = SEL_REGULAR;
351 uint state = e->xbutton.state & ~(Button1Mask | forcemousemod);
352
353 for (type = 1; type < LEN(selmasks); ++type) {
354 if (match(selmasks[type], state)) {
355 seltype = type;
356 break;
357 }
358 }
359 selextend(evcol(e), evrow(e), seltype, done);
360 if (done)
361 setsel(getsel(), e->xbutton.time);
362 }
363
364 void
365 mousereport(XEvent *e)
366 {
367 int len, x = evcol(e), y = evrow(e),
368 button = e->xbutton.button, state = e->xbutton.state;
369 char buf[40];
370 static int ox, oy;
371
372 /* from urxvt */
373 if (e->xbutton.type == MotionNotify) {
374 if (x == ox && y == oy)
375 return;
376 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
377 return;
378 /* MOUSE_MOTION: no reporting if no button is pressed */
379 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
380 return;
381
382 button = oldbutton + 32;
383 ox = x;
384 oy = y;
385 } else {
386 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
387 button = 3;
388 } else {
389 button -= Button1;
390 if (button >= 7)
391 button += 128 - 7;
392 else if (button >= 3)
393 button += 64 - 3;
394 }
395 if (e->xbutton.type == ButtonPress) {
396 oldbutton = button;
397 ox = x;
398 oy = y;
399 } else if (e->xbutton.type == ButtonRelease) {
400 oldbutton = 3;
401 /* MODE_MOUSEX10: no button release reporting */
402 if (IS_SET(MODE_MOUSEX10))
403 return;
404 if (button == 64 || button == 65)
405 return;
406 }
407 }
408
409 if (!IS_SET(MODE_MOUSEX10)) {
410 button += ((state & ShiftMask ) ? 4 : 0)
411 + ((state & Mod4Mask ) ? 8 : 0)
412 + ((state & ControlMask) ? 16 : 0);
413 }
414
415 if (IS_SET(MODE_MOUSESGR)) {
416 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
417 button, x+1, y+1,
418 e->xbutton.type == ButtonRelease ? 'm' : 'M');
419 } else if (x < 223 && y < 223) {
420 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
421 32+button, 32+x+1, 32+y+1);
422 } else {
423 return;
424 }
425
426 ttywrite(buf, len, 0);
427 }
428
429 uint
430 buttonmask(uint button)
431 {
432 return button == Button1 ? Button1Mask
433 : button == Button2 ? Button2Mask
434 : button == Button3 ? Button3Mask
435 : button == Button4 ? Button4Mask
436 : button == Button5 ? Button5Mask
437 : 0;
438 }
439
440 int
441 mouseaction(XEvent *e, uint release)
442 {
443 MouseShortcut *ms;
444
445 /* ignore Button<N>mask for Button<N> - it's set on release */
446 uint state = e->xbutton.state & ~buttonmask(e->xbutton.button);
447
448 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
449 if (ms->release == release &&
450 ms->button == e->xbutton.button &&
451 (!ms->altscrn || (ms->altscrn == (tisaltscr() ? 1 : -1))) &&
452 (match(ms->mod, state) || /* exact or forced */
453 match(ms->mod, state & ~forcemousemod))) {
454 ms->func(&(ms->arg));
455 return 1;
456 }
457 }
458
459 return 0;
460 }
461
462 void
463 bpress(XEvent *e)
464 {
465 struct timespec now;
466 int snap;
467
468 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
469 mousereport(e);
470 return;
471 }
472
473 if (mouseaction(e, 0))
474 return;
475
476 if (e->xbutton.button == Button1) {
477 /*
478 * If the user clicks below predefined timeouts specific
479 * snapping behaviour is exposed.
480 */
481 clock_gettime(CLOCK_MONOTONIC, &now);
482 if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
483 snap = SNAP_LINE;
484 } else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
485 snap = SNAP_WORD;
486 } else {
487 snap = 0;
488 }
489 xsel.tclick2 = xsel.tclick1;
490 xsel.tclick1 = now;
491
492 selstart(evcol(e), evrow(e), snap);
493 }
494 }
495
496 void
497 propnotify(XEvent *e)
498 {
499 XPropertyEvent *xpev;
500 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
501
502 xpev = &e->xproperty;
503 if (xpev->state == PropertyNewValue &&
504 (xpev->atom == XA_PRIMARY ||
505 xpev->atom == clipboard)) {
506 selnotify(e);
507 }
508 }
509
510 void
511 selnotify(XEvent *e)
512 {
513 ulong nitems, ofs, rem;
514 int format;
515 uchar *data, *last, *repl;
516 Atom type, incratom, property = None;
517
518 incratom = XInternAtom(xw.dpy, "INCR", 0);
519
520 ofs = 0;
521 if (e->type == SelectionNotify)
522 property = e->xselection.property;
523 else if (e->type == PropertyNotify)
524 property = e->xproperty.atom;
525
526 if (property == None)
527 return;
528
529 do {
530 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
531 BUFSIZ/4, False, AnyPropertyType,
532 &type, &format, &nitems, &rem,
533 &data)) {
534 fprintf(stderr, "Clipboard allocation failed\n");
535 return;
536 }
537
538 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
539 /*
540 * If there is some PropertyNotify with no data, then
541 * this is the signal of the selection owner that all
542 * data has been transferred. We won't need to receive
543 * PropertyNotify events anymore.
544 */
545 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
546 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
547 &xw.attrs);
548 }
549
550 if (type == incratom) {
551 /*
552 * Activate the PropertyNotify events so we receive
553 * when the selection owner does send us the next
554 * chunk of data.
555 */
556 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
557 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
558 &xw.attrs);
559
560 /*
561 * Deleting the property is the transfer start signal.
562 */
563 XDeleteProperty(xw.dpy, xw.win, (int)property);
564 continue;
565 }
566
567 /*
568 * As seen in getsel:
569 * Line endings are inconsistent in the terminal and GUI world
570 * copy and pasting. When receiving some selection data,
571 * replace all '\n' with '\r'.
572 * FIXME: Fix the computer world.
573 */
574 repl = data;
575 last = data + nitems * format / 8;
576 while ((repl = memchr(repl, '\n', last - repl))) {
577 *repl++ = '\r';
578 }
579
580 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
581 ttywrite("\033[200~", 6, 0);
582 ttywrite((char *)data, nitems * format / 8, 1);
583 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
584 ttywrite("\033[201~", 6, 0);
585 XFree(data);
586 /* number of 32-bit chunks returned */
587 ofs += nitems * format / 32;
588 } while (rem > 0);
589
590 /*
591 * Deleting the property again tells the selection owner to send the
592 * next data chunk in the property.
593 */
594 XDeleteProperty(xw.dpy, xw.win, (int)property);
595 }
596
597 void
598 xclipcopy(void)
599 {
600 clipcopy(NULL);
601 }
602
603 void
604 selclear_(XEvent *e)
605 {
606 selclear();
607 }
608
609 void
610 selrequest(XEvent *e)
611 {
612 XSelectionRequestEvent *xsre;
613 XSelectionEvent xev;
614 Atom xa_targets, string, clipboard;
615 char *seltext;
616
617 xsre = (XSelectionRequestEvent *) e;
618 xev.type = SelectionNotify;
619 xev.requestor = xsre->requestor;
620 xev.selection = xsre->selection;
621 xev.target = xsre->target;
622 xev.time = xsre->time;
623 if (xsre->property == None)
624 xsre->property = xsre->target;
625
626 /* reject */
627 xev.property = None;
628
629 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
630 if (xsre->target == xa_targets) {
631 /* respond with the supported type */
632 string = xsel.xtarget;
633 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
634 XA_ATOM, 32, PropModeReplace,
635 (uchar *) &string, 1);
636 xev.property = xsre->property;
637 } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
638 /*
639 * xith XA_STRING non ascii characters may be incorrect in the
640 * requestor. It is not our problem, use utf8.
641 */
642 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
643 if (xsre->selection == XA_PRIMARY) {
644 seltext = xsel.primary;
645 } else if (xsre->selection == clipboard) {
646 seltext = xsel.clipboard;
647 } else {
648 fprintf(stderr,
649 "Unhandled clipboard selection 0x%lx\n",
650 xsre->selection);
651 return;
652 }
653 if (seltext != NULL) {
654 XChangeProperty(xsre->display, xsre->requestor,
655 xsre->property, xsre->target,
656 8, PropModeReplace,
657 (uchar *)seltext, strlen(seltext));
658 xev.property = xsre->property;
659 }
660 }
661
662 /* all done, send a notification to the listener */
663 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
664 fprintf(stderr, "Error sending SelectionNotify event\n");
665 }
666
667 void
668 setsel(char *str, Time t)
669 {
670 if (!str)
671 return;
672
673 free(xsel.primary);
674 xsel.primary = str;
675
676 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
677 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
678 selclear();
679 }
680
681 void
682 xsetsel(char *str)
683 {
684 setsel(str, CurrentTime);
685 }
686
687 void
688 brelease(XEvent *e)
689 {
690 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
691 mousereport(e);
692 return;
693 }
694
695 if (mouseaction(e, 1))
696 return;
697 if (e->xbutton.button == Button1)
698 mousesel(e, 1);
699 }
700
701 void
702 bmotion(XEvent *e)
703 {
704 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
705 mousereport(e);
706 return;
707 }
708
709 mousesel(e, 0);
710 }
711
712 void
713 cresize(int width, int height)
714 {
715 int col, row;
716
717 if (width != 0)
718 win.w = width;
719 if (height != 0)
720 win.h = height;
721
722 col = (win.w - 2 * borderpx) / win.cw;
723 row = (win.h - 2 * borderpx) / win.ch;
724 col = MAX(1, col);
725 row = MAX(1, row);
726
727 tresize(col, row);
728 xresize(col, row);
729 ttyresize(win.tw, win.th);
730 }
731
732 void
733 xresize(int col, int row)
734 {
735 win.tw = col * win.cw;
736 win.th = row * win.ch;
737
738 XFreePixmap(xw.dpy, xw.buf);
739 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
740 DefaultDepth(xw.dpy, xw.scr));
741 XftDrawChange(xw.draw, xw.buf);
742 xclear(0, 0, win.w, win.h);
743
744 /* resize to new width */
745 xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
746 }
747
748 ushort
749 sixd_to_16bit(int x)
750 {
751 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
752 }
753
754 int
755 xloadcolor(int i, const char *name, Color *ncolor)
756 {
757 XRenderColor color = { .alpha = 0xffff };
758
759 if (!name) {
760 if (BETWEEN(i, 16, 255)) { /* 256 color */
761 if (i < 6*6*6+16) { /* same colors as xterm */
762 color.red = sixd_to_16bit( ((i-16)/36)%6 );
763 color.green = sixd_to_16bit( ((i-16)/6) %6 );
764 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
765 } else { /* greyscale */
766 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
767 color.green = color.blue = color.red;
768 }
769 return XftColorAllocValue(xw.dpy, xw.vis,
770 xw.cmap, &color, ncolor);
771 } else
772 name = colorname[i];
773 }
774
775 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
776 }
777
778 void
779 xloadcols(void)
780 {
781 int i;
782 static int loaded;
783 Color *cp;
784
785 if (loaded) {
786 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
787 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
788 } else {
789 dc.collen = MAX(LEN(colorname), 256);
790 dc.col = xmalloc(dc.collen * sizeof(Color));
791 }
792
793 for (i = 0; i < dc.collen; i++)
794 if (!xloadcolor(i, NULL, &dc.col[i])) {
795 if (colorname[i])
796 die("could not allocate color '%s'\n", colorname[i]);
797 else
798 die("could not allocate color %d\n", i);
799 }
800 loaded = 1;
801 }
802
803 int
804 xsetcolorname(int x, const char *name)
805 {
806 Color ncolor;
807
808 if (!BETWEEN(x, 0, dc.collen))
809 return 1;
810
811 if (!xloadcolor(x, name, &ncolor))
812 return 1;
813
814 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
815 dc.col[x] = ncolor;
816
817 return 0;
818 }
819
820 /*
821 * Absolute coordinates.
822 */
823 void
824 xclear(int x1, int y1, int x2, int y2)
825 {
826 XftDrawRect(xw.draw,
827 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
828 x1, y1, x2-x1, y2-y1);
829 }
830
831 void
832 xhints(void)
833 {
834 XClassHint class = {opt_name ? opt_name : termname,
835 opt_class ? opt_class : termname};
836 XWMHints wm = {.flags = InputHint, .input = 1};
837 XSizeHints *sizeh;
838
839 sizeh = XAllocSizeHints();
840
841 sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
842 sizeh->height = win.h;
843 sizeh->width = win.w;
844 sizeh->height_inc = win.ch;
845 sizeh->width_inc = win.cw;
846 sizeh->base_height = 2 * borderpx;
847 sizeh->base_width = 2 * borderpx;
848 sizeh->min_height = win.ch + 2 * borderpx;
849 sizeh->min_width = win.cw + 2 * borderpx;
850 if (xw.isfixed) {
851 sizeh->flags |= PMaxSize;
852 sizeh->min_width = sizeh->max_width = win.w;
853 sizeh->min_height = sizeh->max_height = win.h;
854 }
855 if (xw.gm & (XValue|YValue)) {
856 sizeh->flags |= USPosition | PWinGravity;
857 sizeh->x = xw.l;
858 sizeh->y = xw.t;
859 sizeh->win_gravity = xgeommasktogravity(xw.gm);
860 }
861
862 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
863 &class);
864 XFree(sizeh);
865 }
866
867 int
868 xgeommasktogravity(int mask)
869 {
870 switch (mask & (XNegative|YNegative)) {
871 case 0:
872 return NorthWestGravity;
873 case XNegative:
874 return NorthEastGravity;
875 case YNegative:
876 return SouthWestGravity;
877 }
878
879 return SouthEastGravity;
880 }
881
882 int
883 xloadfont(Font *f, FcPattern *pattern)
884 {
885 FcPattern *configured;
886 FcPattern *match;
887 FcResult result;
888 XGlyphInfo extents;
889 int wantattr, haveattr;
890
891 /*
892 * Manually configure instead of calling XftMatchFont
893 * so that we can use the configured pattern for
894 * "missing glyph" lookups.
895 */
896 configured = FcPatternDuplicate(pattern);
897 if (!configured)
898 return 1;
899
900 FcConfigSubstitute(NULL, configured, FcMatchPattern);
901 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
902
903 match = FcFontMatch(NULL, configured, &result);
904 if (!match) {
905 FcPatternDestroy(configured);
906 return 1;
907 }
908
909 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
910 FcPatternDestroy(configured);
911 FcPatternDestroy(match);
912 return 1;
913 }
914
915 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
916 XftResultMatch)) {
917 /*
918 * Check if xft was unable to find a font with the appropriate
919 * slant but gave us one anyway. Try to mitigate.
920 */
921 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
922 &haveattr) != XftResultMatch) || haveattr < wantattr) {
923 f->badslant = 1;
924 fputs("font slant does not match\n", stderr);
925 }
926 }
927
928 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
929 XftResultMatch)) {
930 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
931 &haveattr) != XftResultMatch) || haveattr != wantattr) {
932 f->badweight = 1;
933 fputs("font weight does not match\n", stderr);
934 }
935 }
936
937 XftTextExtentsUtf8(xw.dpy, f->match,
938 (const FcChar8 *) ascii_printable,
939 strlen(ascii_printable), &extents);
940
941 f->set = NULL;
942 f->pattern = configured;
943
944 f->ascent = f->match->ascent;
945 f->descent = f->match->descent;
946 f->lbearing = 0;
947 f->rbearing = f->match->max_advance_width;
948
949 f->height = f->ascent + f->descent;
950 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
951
952 return 0;
953 }
954
955 void
956 xloadfonts(const char *fontstr, double fontsize)
957 {
958 FcPattern *pattern;
959 double fontval;
960
961 if (fontstr[0] == '-')
962 pattern = XftXlfdParse(fontstr, False, False);
963 else
964 pattern = FcNameParse((const FcChar8 *)fontstr);
965
966 if (!pattern)
967 die("can't open font %s\n", fontstr);
968
969 if (fontsize > 1) {
970 FcPatternDel(pattern, FC_PIXEL_SIZE);
971 FcPatternDel(pattern, FC_SIZE);
972 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
973 usedfontsize = fontsize;
974 } else {
975 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
976 FcResultMatch) {
977 usedfontsize = fontval;
978 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
979 FcResultMatch) {
980 usedfontsize = -1;
981 } else {
982 /*
983 * Default font size is 12, if none given. This is to
984 * have a known usedfontsize value.
985 */
986 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
987 usedfontsize = 12;
988 }
989 defaultfontsize = usedfontsize;
990 }
991
992 if (xloadfont(&dc.font, pattern))
993 die("can't open font %s\n", fontstr);
994
995 if (usedfontsize < 0) {
996 FcPatternGetDouble(dc.font.match->pattern,
997 FC_PIXEL_SIZE, 0, &fontval);
998 usedfontsize = fontval;
999 if (fontsize == 0)
1000 defaultfontsize = fontval;
1001 }
1002
1003 /* Setting character width and height. */
1004 win.cw = ceilf(dc.font.width * cwscale);
1005 win.ch = ceilf(dc.font.height * chscale);
1006
1007 FcPatternDel(pattern, FC_SLANT);
1008 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
1009 if (xloadfont(&dc.ifont, pattern))
1010 die("can't open font %s\n", fontstr);
1011
1012 FcPatternDel(pattern, FC_WEIGHT);
1013 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
1014 if (xloadfont(&dc.ibfont, pattern))
1015 die("can't open font %s\n", fontstr);
1016
1017 FcPatternDel(pattern, FC_SLANT);
1018 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
1019 if (xloadfont(&dc.bfont, pattern))
1020 die("can't open font %s\n", fontstr);
1021
1022 FcPatternDestroy(pattern);
1023 }
1024
1025 void
1026 xunloadfont(Font *f)
1027 {
1028 XftFontClose(xw.dpy, f->match);
1029 FcPatternDestroy(f->pattern);
1030 if (f->set)
1031 FcFontSetDestroy(f->set);
1032 }
1033
1034 void
1035 xunloadfonts(void)
1036 {
1037 /* Free the loaded fonts in the font cache. */
1038 while (frclen > 0)
1039 XftFontClose(xw.dpy, frc[--frclen].font);
1040
1041 xunloadfont(&dc.font);
1042 xunloadfont(&dc.bfont);
1043 xunloadfont(&dc.ifont);
1044 xunloadfont(&dc.ibfont);
1045 }
1046
1047 int
1048 ximopen(Display *dpy)
1049 {
1050 XIMCallback imdestroy = { .client_data = NULL, .callback = ximdestroy };
1051 XICCallback icdestroy = { .client_data = NULL, .callback = xicdestroy };
1052
1053 xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
1054 if (xw.ime.xim == NULL)
1055 return 0;
1056
1057 if (XSetIMValues(xw.ime.xim, XNDestroyCallback, &imdestroy, NULL))
1058 fprintf(stderr, "XSetIMValues: "
1059 "Could not set XNDestroyCallback.\n");
1060
1061 xw.ime.spotlist = XVaCreateNestedList(0, XNSpotLocation, &xw.ime.spot,
1062 NULL);
1063
1064 if (xw.ime.xic == NULL) {
1065 xw.ime.xic = XCreateIC(xw.ime.xim, XNInputStyle,
1066 XIMPreeditNothing | XIMStatusNothing,
1067 XNClientWindow, xw.win,
1068 XNDestroyCallback, &icdestroy,
1069 NULL);
1070 }
1071 if (xw.ime.xic == NULL)
1072 fprintf(stderr, "XCreateIC: Could not create input context.\n");
1073
1074 return 1;
1075 }
1076
1077 void
1078 ximinstantiate(Display *dpy, XPointer client, XPointer call)
1079 {
1080 if (ximopen(dpy))
1081 XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1082 ximinstantiate, NULL);
1083 }
1084
1085 void
1086 ximdestroy(XIM xim, XPointer client, XPointer call)
1087 {
1088 xw.ime.xim = NULL;
1089 XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1090 ximinstantiate, NULL);
1091 XFree(xw.ime.spotlist);
1092 }
1093
1094 int
1095 xicdestroy(XIC xim, XPointer client, XPointer call)
1096 {
1097 xw.ime.xic = NULL;
1098 return 1;
1099 }
1100
1101 void
1102 xinit(int cols, int rows)
1103 {
1104 XGCValues gcvalues;
1105 Cursor cursor;
1106 Window parent;
1107 pid_t thispid = getpid();
1108 XColor xmousefg, xmousebg;
1109
1110 if (!(xw.dpy = XOpenDisplay(NULL)))
1111 die("can't open display\n");
1112 xw.scr = XDefaultScreen(xw.dpy);
1113 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
1114
1115 /* font */
1116 if (!FcInit())
1117 die("could not init fontconfig.\n");
1118
1119 usedfont = (opt_font == NULL)? font : opt_font;
1120 xloadfonts(usedfont, 0);
1121
1122 /* colors */
1123 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1124 xloadcols();
1125
1126 /* adjust fixed window geometry */
1127 win.w = 2 * borderpx + cols * win.cw;
1128 win.h = 2 * borderpx + rows * win.ch;
1129 if (xw.gm & XNegative)
1130 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
1131 if (xw.gm & YNegative)
1132 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
1133
1134 /* Events */
1135 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
1136 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
1137 xw.attrs.bit_gravity = NorthWestGravity;
1138 xw.attrs.event_mask = FocusChangeMask | KeyPressMask | KeyReleaseMask
1139 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1140 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
1141 xw.attrs.colormap = xw.cmap;
1142
1143 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
1144 parent = XRootWindow(xw.dpy, xw.scr);
1145 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
1146 win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1147 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
1148 | CWEventMask | CWColormap, &xw.attrs);
1149
1150 memset(&gcvalues, 0, sizeof(gcvalues));
1151 gcvalues.graphics_exposures = False;
1152 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
1153 &gcvalues);
1154 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
1155 DefaultDepth(xw.dpy, xw.scr));
1156 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
1157 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
1158
1159 /* font spec buffer */
1160 xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
1161
1162 /* Xft rendering context */
1163 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
1164
1165 /* input methods */
1166 if (!ximopen(xw.dpy)) {
1167 XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1168 ximinstantiate, NULL);
1169 }
1170
1171 /* white cursor, black outline */
1172 cursor = XCreateFontCursor(xw.dpy, mouseshape);
1173 XDefineCursor(xw.dpy, xw.win, cursor);
1174
1175 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
1176 xmousefg.red = 0xffff;
1177 xmousefg.green = 0xffff;
1178 xmousefg.blue = 0xffff;
1179 }
1180
1181 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
1182 xmousebg.red = 0x0000;
1183 xmousebg.green = 0x0000;
1184 xmousebg.blue = 0x0000;
1185 }
1186
1187 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
1188
1189 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1190 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
1191 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
1192 xw.netwmiconname = XInternAtom(xw.dpy, "_NET_WM_ICON_NAME", False);
1193 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
1194
1195 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
1196 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
1197 PropModeReplace, (uchar *)&thispid, 1);
1198
1199 win.mode = MODE_NUMLOCK;
1200 resettitle();
1201 xhints();
1202 XMapWindow(xw.dpy, xw.win);
1203 XSync(xw.dpy, False);
1204
1205 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
1206 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
1207 xsel.primary = NULL;
1208 xsel.clipboard = NULL;
1209 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
1210 if (xsel.xtarget == None)
1211 xsel.xtarget = XA_STRING;
1212 }
1213
1214 int
1215 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
1216 {
1217 float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
1218 ushort mode, prevmode = USHRT_MAX;
1219 Font *font = &dc.font;
1220 int frcflags = FRC_NORMAL;
1221 float runewidth = win.cw;
1222 Rune rune;
1223 FT_UInt glyphidx;
1224 FcResult fcres;
1225 FcPattern *fcpattern, *fontpattern;
1226 FcFontSet *fcsets[] = { NULL };
1227 FcCharSet *fccharset;
1228 int i, f, numspecs = 0;
1229
1230 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1231 /* Fetch rune and mode for current glyph. */
1232 rune = glyphs[i].u;
1233 mode = glyphs[i].mode;
1234
1235 /* Skip dummy wide-character spacing. */
1236 if (mode == ATTR_WDUMMY)
1237 continue;
1238
1239 /* Determine font for glyph if different from previous glyph. */
1240 if (prevmode != mode) {
1241 prevmode = mode;
1242 font = &dc.font;
1243 frcflags = FRC_NORMAL;
1244 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1245 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1246 font = &dc.ibfont;
1247 frcflags = FRC_ITALICBOLD;
1248 } else if (mode & ATTR_ITALIC) {
1249 font = &dc.ifont;
1250 frcflags = FRC_ITALIC;
1251 } else if (mode & ATTR_BOLD) {
1252 font = &dc.bfont;
1253 frcflags = FRC_BOLD;
1254 }
1255 yp = winy + font->ascent;
1256 }
1257
1258 /* Lookup character index with default font. */
1259 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1260 if (glyphidx) {
1261 specs[numspecs].font = font->match;
1262 specs[numspecs].glyph = glyphidx;
1263 specs[numspecs].x = (short)xp;
1264 specs[numspecs].y = (short)yp;
1265 xp += runewidth;
1266 numspecs++;
1267 continue;
1268 }
1269
1270 /* Fallback on font cache, search the font cache for match. */
1271 for (f = 0; f < frclen; f++) {
1272 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1273 /* Everything correct. */
1274 if (glyphidx && frc[f].flags == frcflags)
1275 break;
1276 /* We got a default font for a not found glyph. */
1277 if (!glyphidx && frc[f].flags == frcflags
1278 && frc[f].unicodep == rune) {
1279 break;
1280 }
1281 }
1282
1283 /* Nothing was found. Use fontconfig to find matching font. */
1284 if (f >= frclen) {
1285 if (!font->set)
1286 font->set = FcFontSort(0, font->pattern,
1287 1, 0, &fcres);
1288 fcsets[0] = font->set;
1289
1290 /*
1291 * Nothing was found in the cache. Now use
1292 * some dozen of Fontconfig calls to get the
1293 * font for one single character.
1294 *
1295 * Xft and fontconfig are design failures.
1296 */
1297 fcpattern = FcPatternDuplicate(font->pattern);
1298 fccharset = FcCharSetCreate();
1299
1300 FcCharSetAddChar(fccharset, rune);
1301 FcPatternAddCharSet(fcpattern, FC_CHARSET,
1302 fccharset);
1303 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1304
1305 FcConfigSubstitute(0, fcpattern,
1306 FcMatchPattern);
1307 FcDefaultSubstitute(fcpattern);
1308
1309 fontpattern = FcFontSetMatch(0, fcsets, 1,
1310 fcpattern, &fcres);
1311
1312 /* Allocate memory for the new cache entry. */
1313 if (frclen >= frccap) {
1314 frccap += 16;
1315 frc = xrealloc(frc, frccap * sizeof(Fontcache));
1316 }
1317
1318 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1319 fontpattern);
1320 if (!frc[frclen].font)
1321 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1322 strerror(errno));
1323 frc[frclen].flags = frcflags;
1324 frc[frclen].unicodep = rune;
1325
1326 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1327
1328 f = frclen;
1329 frclen++;
1330
1331 FcPatternDestroy(fcpattern);
1332 FcCharSetDestroy(fccharset);
1333 }
1334
1335 specs[numspecs].font = frc[f].font;
1336 specs[numspecs].glyph = glyphidx;
1337 specs[numspecs].x = (short)xp;
1338 specs[numspecs].y = (short)yp;
1339 xp += runewidth;
1340 numspecs++;
1341 }
1342
1343 return numspecs;
1344 }
1345
1346 void
1347 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1348 {
1349 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1350 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1351 width = charlen * win.cw;
1352 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1353 XRenderColor colfg, colbg;
1354 XRectangle r;
1355
1356 /* Fallback on color display for attributes not supported by the font */
1357 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1358 if (dc.ibfont.badslant || dc.ibfont.badweight)
1359 base.fg = defaultattr;
1360 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1361 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1362 base.fg = defaultattr;
1363 }
1364
1365 if (IS_TRUECOL(base.fg)) {
1366 colfg.alpha = 0xffff;
1367 colfg.red = TRUERED(base.fg);
1368 colfg.green = TRUEGREEN(base.fg);
1369 colfg.blue = TRUEBLUE(base.fg);
1370 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1371 fg = &truefg;
1372 } else {
1373 fg = &dc.col[base.fg];
1374 }
1375
1376 if (IS_TRUECOL(base.bg)) {
1377 colbg.alpha = 0xffff;
1378 colbg.green = TRUEGREEN(base.bg);
1379 colbg.red = TRUERED(base.bg);
1380 colbg.blue = TRUEBLUE(base.bg);
1381 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1382 bg = &truebg;
1383 } else {
1384 bg = &dc.col[base.bg];
1385 }
1386
1387 /* Change basic system colors [0-7] to bright system colors [8-15] */
1388 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1389 fg = &dc.col[base.fg + 8];
1390
1391 if (IS_SET(MODE_REVERSE)) {
1392 if (fg == &dc.col[defaultfg]) {
1393 fg = &dc.col[defaultbg];
1394 } else {
1395 colfg.red = ~fg->color.red;
1396 colfg.green = ~fg->color.green;
1397 colfg.blue = ~fg->color.blue;
1398 colfg.alpha = fg->color.alpha;
1399 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1400 &revfg);
1401 fg = &revfg;
1402 }
1403
1404 if (bg == &dc.col[defaultbg]) {
1405 bg = &dc.col[defaultfg];
1406 } else {
1407 colbg.red = ~bg->color.red;
1408 colbg.green = ~bg->color.green;
1409 colbg.blue = ~bg->color.blue;
1410 colbg.alpha = bg->color.alpha;
1411 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1412 &revbg);
1413 bg = &revbg;
1414 }
1415 }
1416
1417 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1418 colfg.red = fg->color.red / 2;
1419 colfg.green = fg->color.green / 2;
1420 colfg.blue = fg->color.blue / 2;
1421 colfg.alpha = fg->color.alpha;
1422 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1423 fg = &revfg;
1424 }
1425
1426 if (base.mode & ATTR_REVERSE) {
1427 temp = fg;
1428 fg = bg;
1429 bg = temp;
1430 }
1431
1432 if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
1433 fg = bg;
1434
1435 if (base.mode & ATTR_INVISIBLE)
1436 fg = bg;
1437
1438 /* Intelligent cleaning up of the borders. */
1439 if (x == 0) {
1440 xclear(0, (y == 0)? 0 : winy, borderpx,
1441 winy + win.ch +
1442 ((winy + win.ch >= borderpx + win.th)? win.h : 0));
1443 }
1444 if (winx + width >= borderpx + win.tw) {
1445 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1446 ((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
1447 }
1448 if (y == 0)
1449 xclear(winx, 0, winx + width, borderpx);
1450 if (winy + win.ch >= borderpx + win.th)
1451 xclear(winx, winy + win.ch, winx + width, win.h);
1452
1453 /* Clean up the region we want to draw to. */
1454 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1455
1456 /* Set the clip region because Xft is sometimes dirty. */
1457 r.x = 0;
1458 r.y = 0;
1459 r.height = win.ch;
1460 r.width = width;
1461 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1462
1463 /* Render the glyphs. */
1464 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1465
1466 /* Render underline and strikethrough. */
1467 if (base.mode & ATTR_UNDERLINE) {
1468 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
1469 width, 1);
1470 }
1471
1472 if (base.mode & ATTR_STRUCK) {
1473 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
1474 width, 1);
1475 }
1476
1477 /* Reset clip to none. */
1478 XftDrawSetClip(xw.draw, 0);
1479 }
1480
1481 void
1482 xdrawglyph(Glyph g, int x, int y)
1483 {
1484 int numspecs;
1485 XftGlyphFontSpec spec;
1486
1487 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1488 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1489 }
1490
1491 void
1492 xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
1493 {
1494 Color drawcol;
1495
1496 /* remove the old cursor */
1497 if (selected(ox, oy))
1498 og.mode ^= ATTR_REVERSE;
1499 xdrawglyph(og, ox, oy);
1500
1501 if (IS_SET(MODE_HIDE))
1502 return;
1503
1504 /*
1505 * Select the right color for the right mode.
1506 */
1507 g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
1508
1509 if (IS_SET(MODE_REVERSE)) {
1510 g.mode |= ATTR_REVERSE;
1511 g.bg = defaultfg;
1512 if (selected(cx, cy)) {
1513 drawcol = dc.col[defaultcs];
1514 g.fg = defaultrcs;
1515 } else {
1516 drawcol = dc.col[defaultrcs];
1517 g.fg = defaultcs;
1518 }
1519 } else {
1520 if (selected(cx, cy)) {
1521 g.fg = defaultfg;
1522 g.bg = defaultrcs;
1523 } else {
1524 g.fg = defaultbg;
1525 g.bg = defaultcs;
1526 }
1527 drawcol = dc.col[g.bg];
1528 }
1529
1530 /* draw the new one */
1531 if (IS_SET(MODE_FOCUSED)) {
1532 switch (win.cursor) {
1533 case 7: /* st extension */
1534 g.u = 0x2603; /* snowman (U+2603) */
1535 /* FALLTHROUGH */
1536 case 0: /* Blinking Block */
1537 case 1: /* Blinking Block (Default) */
1538 case 2: /* Steady Block */
1539 xdrawglyph(g, cx, cy);
1540 break;
1541 case 3: /* Blinking Underline */
1542 case 4: /* Steady Underline */
1543 XftDrawRect(xw.draw, &drawcol,
1544 borderpx + cx * win.cw,
1545 borderpx + (cy + 1) * win.ch - \
1546 cursorthickness,
1547 win.cw, cursorthickness);
1548 break;
1549 case 5: /* Blinking bar */
1550 case 6: /* Steady bar */
1551 XftDrawRect(xw.draw, &drawcol,
1552 borderpx + cx * win.cw,
1553 borderpx + cy * win.ch,
1554 cursorthickness, win.ch);
1555 break;
1556 }
1557 } else {
1558 XftDrawRect(xw.draw, &drawcol,
1559 borderpx + cx * win.cw,
1560 borderpx + cy * win.ch,
1561 win.cw - 1, 1);
1562 XftDrawRect(xw.draw, &drawcol,
1563 borderpx + cx * win.cw,
1564 borderpx + cy * win.ch,
1565 1, win.ch - 1);
1566 XftDrawRect(xw.draw, &drawcol,
1567 borderpx + (cx + 1) * win.cw - 1,
1568 borderpx + cy * win.ch,
1569 1, win.ch - 1);
1570 XftDrawRect(xw.draw, &drawcol,
1571 borderpx + cx * win.cw,
1572 borderpx + (cy + 1) * win.ch - 1,
1573 win.cw, 1);
1574 }
1575 }
1576
1577 void
1578 xsetenv(void)
1579 {
1580 char buf[sizeof(long) * 8 + 1];
1581
1582 snprintf(buf, sizeof(buf), "%lu", xw.win);
1583 setenv("WINDOWID", buf, 1);
1584 }
1585
1586 void
1587 xseticontitle(char *p)
1588 {
1589 XTextProperty prop;
1590 DEFAULT(p, opt_title);
1591
1592 if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1593 &prop) != Success)
1594 return;
1595 XSetWMIconName(xw.dpy, xw.win, &prop);
1596 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmiconname);
1597 XFree(prop.value);
1598 }
1599
1600 void
1601 xsettitle(char *p)
1602 {
1603 XTextProperty prop;
1604 DEFAULT(p, opt_title);
1605
1606 if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1607 &prop) != Success)
1608 return;
1609 XSetWMName(xw.dpy, xw.win, &prop);
1610 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1611 XFree(prop.value);
1612 }
1613
1614 int
1615 xstartdraw(void)
1616 {
1617 return IS_SET(MODE_VISIBLE);
1618 }
1619
1620 void
1621 xdrawline(Line line, int x1, int y1, int x2)
1622 {
1623 int i, x, ox, numspecs;
1624 Glyph base, new;
1625 XftGlyphFontSpec *specs = xw.specbuf;
1626
1627 numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
1628 i = ox = 0;
1629 for (x = x1; x < x2 && i < numspecs; x++) {
1630 new = line[x];
1631 if (new.mode == ATTR_WDUMMY)
1632 continue;
1633 if (selected(x, y1))
1634 new.mode ^= ATTR_REVERSE;
1635 if (i > 0 && ATTRCMP(base, new)) {
1636 xdrawglyphfontspecs(specs, base, i, ox, y1);
1637 specs += i;
1638 numspecs -= i;
1639 i = 0;
1640 }
1641 if (i == 0) {
1642 ox = x;
1643 base = new;
1644 }
1645 i++;
1646 }
1647 if (i > 0)
1648 xdrawglyphfontspecs(specs, base, i, ox, y1);
1649 }
1650
1651 void
1652 xfinishdraw(void)
1653 {
1654 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1655 win.h, 0, 0);
1656 XSetForeground(xw.dpy, dc.gc,
1657 dc.col[IS_SET(MODE_REVERSE)?
1658 defaultfg : defaultbg].pixel);
1659 }
1660
1661 void
1662 xximspot(int x, int y)
1663 {
1664 if (xw.ime.xic == NULL)
1665 return;
1666
1667 xw.ime.spot.x = borderpx + x * win.cw;
1668 xw.ime.spot.y = borderpx + (y + 1) * win.ch;
1669
1670 XSetICValues(xw.ime.xic, XNPreeditAttributes, xw.ime.spotlist, NULL);
1671 }
1672
1673 void
1674 expose(XEvent *ev)
1675 {
1676 redraw();
1677 }
1678
1679 void
1680 visibility(XEvent *ev)
1681 {
1682 XVisibilityEvent *e = &ev->xvisibility;
1683
1684 MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
1685 }
1686
1687 void
1688 unmap(XEvent *ev)
1689 {
1690 win.mode &= ~MODE_VISIBLE;
1691 }
1692
1693 void
1694 xsetpointermotion(int set)
1695 {
1696 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1697 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1698 }
1699
1700 void
1701 xsetmode(int set, unsigned int flags)
1702 {
1703 int mode = win.mode;
1704 MODBIT(win.mode, set, flags);
1705 if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
1706 redraw();
1707 }
1708
1709 int
1710 xsetcursor(int cursor)
1711 {
1712 if (!BETWEEN(cursor, 0, 7)) /* 7: st extension */
1713 return 1;
1714 win.cursor = cursor;
1715 return 0;
1716 }
1717
1718 void
1719 xseturgency(int add)
1720 {
1721 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1722
1723 MODBIT(h->flags, add, XUrgencyHint);
1724 XSetWMHints(xw.dpy, xw.win, h);
1725 XFree(h);
1726 }
1727
1728 void
1729 xbell(void)
1730 {
1731 if (!(IS_SET(MODE_FOCUSED)))
1732 xseturgency(1);
1733 if (bellvolume)
1734 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1735 }
1736
1737 void
1738 focus(XEvent *ev)
1739 {
1740 XFocusChangeEvent *e = &ev->xfocus;
1741
1742 if (e->mode == NotifyGrab)
1743 return;
1744
1745 if (ev->type == FocusIn) {
1746 if (xw.ime.xic)
1747 XSetICFocus(xw.ime.xic);
1748 win.mode |= MODE_FOCUSED;
1749 xseturgency(0);
1750 if (IS_SET(MODE_FOCUS))
1751 ttywrite("\033[I", 3, 0);
1752 } else {
1753 if (xw.ime.xic)
1754 XUnsetICFocus(xw.ime.xic);
1755 win.mode &= ~MODE_FOCUSED;
1756 if (IS_SET(MODE_FOCUS))
1757 ttywrite("\033[O", 3, 0);
1758 }
1759 }
1760
1761 int
1762 match(uint mask, uint state)
1763 {
1764 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1765 }
1766
1767 char*
1768 kmap(KeySym k, uint state)
1769 {
1770 Key *kp;
1771 int i;
1772
1773 /* Check for mapped keys out of X11 function keys. */
1774 for (i = 0; i < LEN(mappedkeys); i++) {
1775 if (mappedkeys[i] == k)
1776 break;
1777 }
1778 if (i == LEN(mappedkeys)) {
1779 if ((k & 0xFFFF) < 0xFD00)
1780 return NULL;
1781 }
1782
1783 for (kp = key; kp < key + LEN(key); kp++) {
1784 if (kp->k != k)
1785 continue;
1786
1787 if (!match(kp->mask, state))
1788 continue;
1789
1790 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1791 continue;
1792 if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
1793 continue;
1794
1795 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1796 continue;
1797
1798 return kp->s;
1799 }
1800
1801 return NULL;
1802 }
1803
1804 void
1805 kpress(XEvent *ev)
1806 {
1807 XKeyEvent *e = &ev->xkey;
1808 KeySym ksym;
1809 char buf[64], *customkey;
1810 int len;
1811 Rune c;
1812 Status status;
1813 Shortcut *bp;
1814
1815 if (IS_SET(MODE_KBDLOCK))
1816 return;
1817
1818 if (xw.ime.xic)
1819 len = XmbLookupString(xw.ime.xic, e, buf, sizeof buf, &ksym, &status);
1820 else
1821 len = XLookupString(e, buf, sizeof buf, &ksym, NULL);
1822 /* 1. shortcuts */
1823 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
1824 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1825 bp->func(&(bp->arg));
1826 return;
1827 }
1828 }
1829
1830 /* 2. custom keys from config.h */
1831 if ((customkey = kmap(ksym, e->state))) {
1832 ttywrite(customkey, strlen(customkey), 1);
1833 return;
1834 }
1835
1836 /* 3. composed string from input method */
1837 if (len == 0)
1838 return;
1839 if (len == 1 && e->state & Mod1Mask) {
1840 if (IS_SET(MODE_8BIT)) {
1841 if (*buf < 0177) {
1842 c = *buf | 0x80;
1843 len = utf8encode(c, buf);
1844 }
1845 } else {
1846 buf[1] = buf[0];
1847 buf[0] = '\033';
1848 len = 2;
1849 }
1850 }
1851 ttywrite(buf, len, 1);
1852 }
1853
1854 void
1855 cmessage(XEvent *e)
1856 {
1857 /*
1858 * See xembed specs
1859 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1860 */
1861 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1862 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1863 win.mode |= MODE_FOCUSED;
1864 xseturgency(0);
1865 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1866 win.mode &= ~MODE_FOCUSED;
1867 }
1868 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1869 ttyhangup();
1870 exit(0);
1871 }
1872 }
1873
1874 void
1875 resize(XEvent *e)
1876 {
1877 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1878 return;
1879
1880 cresize(e->xconfigure.width, e->xconfigure.height);
1881 }
1882
1883 void
1884 run(void)
1885 {
1886 XEvent ev;
1887 int w = win.w, h = win.h;
1888 fd_set rfd;
1889 int xfd = XConnectionNumber(xw.dpy), ttyfd, xev, drawing;
1890 struct timespec seltv, *tv, now, lastblink, trigger;
1891 double timeout;
1892
1893 /* Waiting for window mapping */
1894 do {
1895 XNextEvent(xw.dpy, &ev);
1896 /*
1897 * This XFilterEvent call is required because of XOpenIM. It
1898 * does filter out the key event and some client message for
1899 * the input method too.
1900 */
1901 if (XFilterEvent(&ev, None))
1902 continue;
1903 if (ev.type == ConfigureNotify) {
1904 w = ev.xconfigure.width;
1905 h = ev.xconfigure.height;
1906 }
1907 } while (ev.type != MapNotify);
1908
1909 ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
1910 cresize(w, h);
1911
1912 for (timeout = -1, drawing = 0, lastblink = (struct timespec){0};;) {
1913 FD_ZERO(&rfd);
1914 FD_SET(ttyfd, &rfd);
1915 FD_SET(xfd, &rfd);
1916
1917 if (XPending(xw.dpy))
1918 timeout = 0; /* existing events might not set xfd */
1919
1920 seltv.tv_sec = timeout / 1E3;
1921 seltv.tv_nsec = 1E6 * (timeout - 1E3 * seltv.tv_sec);
1922 tv = timeout >= 0 ? &seltv : NULL;
1923
1924 if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1925 if (errno == EINTR)
1926 continue;
1927 die("select failed: %s\n", strerror(errno));
1928 }
1929 clock_gettime(CLOCK_MONOTONIC, &now);
1930
1931 if (FD_ISSET(ttyfd, &rfd))
1932 ttyread();
1933
1934 xev = 0;
1935 while (XPending(xw.dpy)) {
1936 xev = 1;
1937 XNextEvent(xw.dpy, &ev);
1938 if (XFilterEvent(&ev, None))
1939 continue;
1940 if (handler[ev.type])
1941 (handler[ev.type])(&ev);
1942 }
1943
1944 /*
1945 * To reduce flicker and tearing, when new content or event
1946 * triggers drawing, we first wait a bit to ensure we got
1947 * everything, and if nothing new arrives - we draw.
1948 * We start with trying to wait minlatency ms. If more content
1949 * arrives sooner, we retry with shorter and shorter periods,
1950 * and eventually draw even without idle after maxlatency ms.
1951 * Typically this results in low latency while interacting,
1952 * maximum latency intervals during `cat huge.txt`, and perfect
1953 * sync with periodic updates from animations/key-repeats/etc.
1954 */
1955 if (FD_ISSET(ttyfd, &rfd) || xev) {
1956 if (!drawing) {
1957 trigger = now;
1958 drawing = 1;
1959 }
1960 timeout = (maxlatency - TIMEDIFF(now, trigger)) \
1961 / maxlatency * minlatency;
1962 if (timeout > 0)
1963 continue; /* we have time, try to find idle */
1964 }
1965
1966 /* idle detected or maxlatency exhausted -> draw */
1967 timeout = -1;
1968 if (blinktimeout && tattrset(ATTR_BLINK)) {
1969 timeout = blinktimeout - TIMEDIFF(now, lastblink);
1970 if (timeout <= 0) {
1971 if (-timeout > blinktimeout) /* start visible */
1972 win.mode |= MODE_BLINK;
1973 win.mode ^= MODE_BLINK;
1974 tsetdirtattr(ATTR_BLINK);
1975 lastblink = now;
1976 timeout = blinktimeout;
1977 }
1978 }
1979
1980 draw();
1981 XFlush(xw.dpy);
1982 drawing = 0;
1983 }
1984 }
1985
1986 void
1987 usage(void)
1988 {
1989 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
1990 " [-n name] [-o file]\n"
1991 " [-T title] [-t title] [-w windowid]"
1992 " [[-e] command [args ...]]\n"
1993 " %s [-aiv] [-c class] [-f font] [-g geometry]"
1994 " [-n name] [-o file]\n"
1995 " [-T title] [-t title] [-w windowid] -l line"
1996 " [stty_args ...]\n", argv0, argv0);
1997 }
1998
1999 int
2000 main(int argc, char *argv[])
2001 {
2002 xw.l = xw.t = 0;
2003 xw.isfixed = False;
2004 xsetcursor(cursorshape);
2005
2006 ARGBEGIN {
2007 case 'a':
2008 allowaltscreen = 0;
2009 break;
2010 case 'c':
2011 opt_class = EARGF(usage());
2012 break;
2013 case 'e':
2014 if (argc > 0)
2015 --argc, ++argv;
2016 goto run;
2017 case 'f':
2018 opt_font = EARGF(usage());
2019 break;
2020 case 'g':
2021 xw.gm = XParseGeometry(EARGF(usage()),
2022 &xw.l, &xw.t, &cols, &rows);
2023 break;
2024 case 'i':
2025 xw.isfixed = 1;
2026 break;
2027 case 'o':
2028 opt_io = EARGF(usage());
2029 break;
2030 case 'l':
2031 opt_line = EARGF(usage());
2032 break;
2033 case 'n':
2034 opt_name = EARGF(usage());
2035 break;
2036 case 't':
2037 case 'T':
2038 opt_title = EARGF(usage());
2039 break;
2040 case 'w':
2041 opt_embed = EARGF(usage());
2042 break;
2043 case 'v':
2044 die("%s " VERSION "\n", argv0);
2045 break;
2046 default:
2047 usage();
2048 } ARGEND;
2049
2050 run:
2051 if (argc > 0) /* eat all remaining arguments */
2052 opt_cmd = argv;
2053
2054 if (!opt_title)
2055 opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];
2056
2057 setlocale(LC_CTYPE, "");
2058 XSetLocaleModifiers("");
2059 cols = MAX(cols, 1);
2060 rows = MAX(rows, 1);
2061 tnew(cols, rows);
2062 xinit(cols, rows);
2063 xsetenv();
2064 selinit();
2065 run();
2066
2067 return 0;
2068 }
2069