tx.c - st - [fork] customized build of st, the simple terminal
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tx.c (48848B)
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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 char *argv0;
19 #include "arg.h"
20 #include "st.h"
21 #include "win.h"
22
23 /* types used in config.h */
24 typedef struct {
25 uint mod;
26 KeySym keysym;
27 void (*func)(const Arg *);
28 const Arg arg;
29 } Shortcut;
30
31 typedef struct {
32 uint mod;
33 uint button;
34 void (*func)(const Arg *);
35 const Arg arg;
36 uint release;
37 } MouseShortcut;
38
39 typedef struct {
40 KeySym k;
41 uint mask;
42 char *s;
43 /* three-valued logic variables: 0 indifferent, 1 on, -1 off */
44 signed char appkey; /* application keypad */
45 signed char appcursor; /* application cursor */
46 } Key;
47
48 /* X modifiers */
49 #define XK_ANY_MOD UINT_MAX
50 #define XK_NO_MOD 0
51 #define XK_SWITCH_MOD (1<<13|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 invert(const Arg *);
62 static void ttysend(const Arg *);
63
64 /* config.h for applying patches and the configuration. */
65 #include "config.h"
66
67 /* XEMBED messages */
68 #define XEMBED_FOCUS_IN 4
69 #define XEMBED_FOCUS_OUT 5
70
71 /* macros */
72 #define IS_SET(flag) ((win.mode & (flag)) != 0)
73 #define TRUERED(x) (((x) & 0xff0000) >> 8)
74 #define TRUEGREEN(x) (((x) & 0xff00))
75 #define TRUEBLUE(x) (((x) & 0xff) << 8)
76
77 typedef XftDraw *Draw;
78 typedef XftColor Color;
79 typedef XftGlyphFontSpec GlyphFontSpec;
80
81 /* Purely graphic info */
82 typedef struct {
83 int tw, th; /* tty width and height */
84 int w, h; /* window width and height */
85 int ch; /* char height */
86 int cw; /* char width */
87 int mode; /* window state/mode flags */
88 int cursor; /* cursor style */
89 } TermWindow;
90
91 typedef struct {
92 Display *dpy;
93 Colormap cmap;
94 Window win;
95 Drawable buf;
96 GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
97 Atom xembed, wmdeletewin, netwmname, netwmiconname, netwmpid;
98 struct {
99 XIM xim;
100 XIC xic;
101 XPoint spot;
102 XVaNestedList spotlist;
103 } ime;
104 Draw draw;
105 Visual *vis;
106 XSetWindowAttributes attrs;
107 int scr;
108 int isfixed; /* is fixed geometry? */
109 int l, t; /* left and top offset */
110 int gm; /* geometry mask */
111 } XWindow;
112
113 typedef struct {
114 Atom xtarget;
115 char *primary, *clipboard;
116 struct timespec tclick1;
117 struct timespec tclick2;
118 } XSelection;
119
120 /* Font structure */
121 #define Font Font_
122 typedef struct {
123 int height;
124 int width;
125 int ascent;
126 int descent;
127 int badslant;
128 int badweight;
129 short lbearing;
130 short rbearing;
131 XftFont *match;
132 FcFontSet *set;
133 FcPattern *pattern;
134 } Font;
135
136 /* Drawing Context */
137 typedef struct {
138 Color *col;
139 size_t collen;
140 Font font, bfont, ifont, ibfont;
141 GC gc;
142 } DC;
143
144 static inline ushort sixd_to_16bit(int);
145 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
146 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
147 static void xdrawglyph(Glyph, int, int);
148 static void xclear(int, int, int, int);
149 static int xgeommasktogravity(int);
150 static int ximopen(Display *);
151 static void ximinstantiate(Display *, XPointer, XPointer);
152 static void ximdestroy(XIM, XPointer, XPointer);
153 static int xicdestroy(XIC, XPointer, XPointer);
154 static void xinit(int, int);
155 static void cresize(int, int);
156 static void xresize(int, int);
157 static void xhints(void);
158 static int xloadcolor(int, const char *, Color *);
159 static int xloadfont(Font *, FcPattern *);
160 static void xloadfonts(const char *, double);
161 static void xunloadfont(Font *);
162 static void xunloadfonts(void);
163 static void xsetenv(void);
164 static void xseturgency(int);
165 static int evcol(XEvent *);
166 static int evrow(XEvent *);
167
168 static void expose(XEvent *);
169 static void visibility(XEvent *);
170 static void unmap(XEvent *);
171 static void kpress(XEvent *);
172 static void cmessage(XEvent *);
173 static void resize(XEvent *);
174 static void focus(XEvent *);
175 static uint buttonmask(uint);
176 static int mouseaction(XEvent *, uint);
177 static void brelease(XEvent *);
178 static void bpress(XEvent *);
179 static void bmotion(XEvent *);
180 static void propnotify(XEvent *);
181 static void selnotify(XEvent *);
182 static void selclear_(XEvent *);
183 static void selrequest(XEvent *);
184 static void setsel(char *, Time);
185 static void mousesel(XEvent *, int);
186 static void mousereport(XEvent *);
187 static char *kmap(KeySym, uint);
188 static int match(uint, uint);
189
190 static void run(void);
191 static void usage(void);
192
193 static void (*handler[LASTEvent])(XEvent *) = {
194 [KeyPress] = kpress,
195 [ClientMessage] = cmessage,
196 [ConfigureNotify] = resize,
197 [VisibilityNotify] = visibility,
198 [UnmapNotify] = unmap,
199 [Expose] = expose,
200 [FocusIn] = focus,
201 [FocusOut] = focus,
202 [MotionNotify] = bmotion,
203 [ButtonPress] = bpress,
204 [ButtonRelease] = brelease,
205 /*
206 * Uncomment if you want the selection to disappear when you select something
207 * different in another window.
208 */
209 /* [SelectionClear] = selclear_, */
210 [SelectionNotify] = selnotify,
211 /*
212 * PropertyNotify is only turned on when there is some INCR transfer happening
213 * for the selection retrieval.
214 */
215 [PropertyNotify] = propnotify,
216 [SelectionRequest] = selrequest,
217 };
218
219 /* Globals */
220 static DC dc;
221 static XWindow xw;
222 static XSelection xsel;
223 static TermWindow win;
224
225 /* Font Ring Cache */
226 enum {
227 FRC_NORMAL,
228 FRC_ITALIC,
229 FRC_BOLD,
230 FRC_ITALICBOLD
231 };
232
233 typedef struct {
234 XftFont *font;
235 int flags;
236 Rune unicodep;
237 } Fontcache;
238
239 /* Fontcache is an array now. A new font will be appended to the array. */
240 static Fontcache *frc = NULL;
241 static int frclen = 0;
242 static int frccap = 0;
243 static char *usedfont = NULL;
244 static double usedfontsize = 0;
245 static double defaultfontsize = 0;
246
247 static char *opt_class = NULL;
248 static char **opt_cmd = NULL;
249 static char *opt_embed = NULL;
250 static char *opt_font = NULL;
251 static char *opt_io = NULL;
252 static char *opt_line = NULL;
253 static char *opt_name = NULL;
254 static char *opt_title = NULL;
255
256 static int invertcolors = 0;
257 static uint buttons; /* bit field of pressed buttons */
258
259 void
260 invert(const Arg *dummy)
261 {
262 /*unsigned int tmp;
263 tmp = defaultfg;
264 defaultfg = defaultbg;
265 defaultbg = tmp;*/
266
267 invertcolors = !invertcolors;
268 xloadcols();
269 redraw();
270 }
271
272 /*Color
273 invertedcolor(Color *clr)
274 {
275 XRenderColor rc;
276 Color inverted;
277 rc.red = ~clr->color.red;
278 rc.green = ~clr->color.green;
279 rc.blue = ~clr->color.blue;
280 rc.alpha = clr->color.alpha;
281 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &rc, &inverted);
282 return inverted;
283 }*/
284
285 void
286 clipcopy(const Arg *dummy)
287 {
288 Atom clipboard;
289
290 free(xsel.clipboard);
291 xsel.clipboard = NULL;
292
293 if (xsel.primary != NULL) {
294 xsel.clipboard = xstrdup(xsel.primary);
295 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
296 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
297 }
298 }
299
300 void
301 clippaste(const Arg *dummy)
302 {
303 Atom clipboard;
304
305 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
306 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
307 xw.win, CurrentTime);
308 }
309
310 void
311 selpaste(const Arg *dummy)
312 {
313 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
314 xw.win, CurrentTime);
315 }
316
317 void
318 numlock(const Arg *dummy)
319 {
320 win.mode ^= MODE_NUMLOCK;
321 }
322
323 void
324 zoom(const Arg *arg)
325 {
326 Arg larg;
327
328 larg.f = usedfontsize + arg->f;
329 zoomabs(&larg);
330 }
331
332 void
333 zoomabs(const Arg *arg)
334 {
335 xunloadfonts();
336 xloadfonts(usedfont, arg->f);
337 cresize(0, 0);
338 redraw();
339 xhints();
340 }
341
342 void
343 zoomreset(const Arg *arg)
344 {
345 Arg larg;
346
347 if (defaultfontsize > 0) {
348 larg.f = defaultfontsize;
349 zoomabs(&larg);
350 }
351 }
352
353 void
354 ttysend(const Arg *arg)
355 {
356 ttywrite(arg->s, strlen(arg->s), 1);
357 }
358
359 int
360 evcol(XEvent *e)
361 {
362 int x = e->xbutton.x - borderpx;
363 LIMIT(x, 0, win.tw - 1);
364 return x / win.cw;
365 }
366
367 int
368 evrow(XEvent *e)
369 {
370 int y = e->xbutton.y - borderpx;
371 LIMIT(y, 0, win.th - 1);
372 return y / win.ch;
373 }
374
375 void
376 mousesel(XEvent *e, int done)
377 {
378 int type, seltype = SEL_REGULAR;
379 uint state = e->xbutton.state & ~(Button1Mask | forcemousemod);
380
381 for (type = 1; type < LEN(selmasks); ++type) {
382 if (match(selmasks[type], state)) {
383 seltype = type;
384 break;
385 }
386 }
387 selextend(evcol(e), evrow(e), seltype, done);
388 if (done)
389 setsel(getsel(), e->xbutton.time);
390 }
391
392 void
393 mousereport(XEvent *e)
394 {
395 int len, btn, code;
396 int x = evcol(e), y = evrow(e);
397 int state = e->xbutton.state;
398 char buf[40];
399 static int ox, oy;
400
401 if (e->type == MotionNotify) {
402 if (x == ox && y == oy)
403 return;
404 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
405 return;
406 /* MODE_MOUSEMOTION: no reporting if no button is pressed */
407 if (IS_SET(MODE_MOUSEMOTION) && buttons == 0)
408 return;
409 /* Set btn to lowest-numbered pressed button, or 12 if no
410 * buttons are pressed. */
411 for (btn = 1; btn <= 11 && !(buttons & (1<<(btn-1))); btn++)
412 ;
413 code = 32;
414 } else {
415 btn = e->xbutton.button;
416 /* Only buttons 1 through 11 can be encoded */
417 if (btn < 1 || btn > 11)
418 return;
419 if (e->type == ButtonRelease) {
420 /* MODE_MOUSEX10: no button release reporting */
421 if (IS_SET(MODE_MOUSEX10))
422 return;
423 /* Don't send release events for the scroll wheel */
424 if (btn == 4 || btn == 5)
425 return;
426 }
427 code = 0;
428 }
429
430 ox = x;
431 oy = y;
432
433 /* Encode btn into code. If no button is pressed for a motion event in
434 * MODE_MOUSEMANY, then encode it as a release. */
435 if ((!IS_SET(MODE_MOUSESGR) && e->type == ButtonRelease) || btn == 12)
436 code += 3;
437 else if (btn >= 8)
438 code += 128 + btn - 8;
439 else if (btn >= 4)
440 code += 64 + btn - 4;
441 else
442 code += btn - 1;
443
444 if (!IS_SET(MODE_MOUSEX10)) {
445 code += ((state & ShiftMask ) ? 4 : 0)
446 + ((state & Mod1Mask ) ? 8 : 0) /* meta key: alt */
447 + ((state & ControlMask) ? 16 : 0);
448 }
449
450 if (IS_SET(MODE_MOUSESGR)) {
451 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
452 code, x+1, y+1,
453 e->type == ButtonRelease ? 'm' : 'M');
454 } else if (x < 223 && y < 223) {
455 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
456 32+code, 32+x+1, 32+y+1);
457 } else {
458 return;
459 }
460
461 ttywrite(buf, len, 0);
462 }
463
464 uint
465 buttonmask(uint button)
466 {
467 return button == Button1 ? Button1Mask
468 : button == Button2 ? Button2Mask
469 : button == Button3 ? Button3Mask
470 : button == Button4 ? Button4Mask
471 : button == Button5 ? Button5Mask
472 : 0;
473 }
474
475 int
476 mouseaction(XEvent *e, uint release)
477 {
478 MouseShortcut *ms;
479
480 /* ignore Button<N>mask for Button<N> - it's set on release */
481 uint state = e->xbutton.state & ~buttonmask(e->xbutton.button);
482
483 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
484 if (ms->release == release &&
485 ms->button == e->xbutton.button &&
486 (match(ms->mod, state) || /* exact or forced */
487 match(ms->mod, state & ~forcemousemod))) {
488 ms->func(&(ms->arg));
489 return 1;
490 }
491 }
492
493 return 0;
494 }
495
496 void
497 bpress(XEvent *e)
498 {
499 int btn = e->xbutton.button;
500 struct timespec now;
501 int snap;
502
503 if (1 <= btn && btn <= 11)
504 buttons |= 1 << (btn-1);
505
506 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
507 mousereport(e);
508 return;
509 }
510
511 if (mouseaction(e, 0))
512 return;
513
514 if (btn == Button1) {
515 /*
516 * If the user clicks below predefined timeouts specific
517 * snapping behaviour is exposed.
518 */
519 clock_gettime(CLOCK_MONOTONIC, &now);
520 if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
521 snap = SNAP_LINE;
522 } else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
523 snap = SNAP_WORD;
524 } else {
525 snap = 0;
526 }
527 xsel.tclick2 = xsel.tclick1;
528 xsel.tclick1 = now;
529
530 selstart(evcol(e), evrow(e), snap);
531 }
532 }
533
534 void
535 propnotify(XEvent *e)
536 {
537 XPropertyEvent *xpev;
538 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
539
540 xpev = &e->xproperty;
541 if (xpev->state == PropertyNewValue &&
542 (xpev->atom == XA_PRIMARY ||
543 xpev->atom == clipboard)) {
544 selnotify(e);
545 }
546 }
547
548 void
549 selnotify(XEvent *e)
550 {
551 ulong nitems, ofs, rem;
552 int format;
553 uchar *data, *last, *repl;
554 Atom type, incratom, property = None;
555
556 incratom = XInternAtom(xw.dpy, "INCR", 0);
557
558 ofs = 0;
559 if (e->type == SelectionNotify)
560 property = e->xselection.property;
561 else if (e->type == PropertyNotify)
562 property = e->xproperty.atom;
563
564 if (property == None)
565 return;
566
567 do {
568 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
569 BUFSIZ/4, False, AnyPropertyType,
570 &type, &format, &nitems, &rem,
571 &data)) {
572 fprintf(stderr, "Clipboard allocation failed\n");
573 return;
574 }
575
576 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
577 /*
578 * If there is some PropertyNotify with no data, then
579 * this is the signal of the selection owner that all
580 * data has been transferred. We won't need to receive
581 * PropertyNotify events anymore.
582 */
583 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
584 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
585 &xw.attrs);
586 }
587
588 if (type == incratom) {
589 /*
590 * Activate the PropertyNotify events so we receive
591 * when the selection owner does send us the next
592 * chunk of data.
593 */
594 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
595 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
596 &xw.attrs);
597
598 /*
599 * Deleting the property is the transfer start signal.
600 */
601 XDeleteProperty(xw.dpy, xw.win, (int)property);
602 continue;
603 }
604
605 /*
606 * As seen in getsel:
607 * Line endings are inconsistent in the terminal and GUI world
608 * copy and pasting. When receiving some selection data,
609 * replace all '\n' with '\r'.
610 * FIXME: Fix the computer world.
611 */
612 repl = data;
613 last = data + nitems * format / 8;
614 while ((repl = memchr(repl, '\n', last - repl))) {
615 *repl++ = '\r';
616 }
617
618 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
619 ttywrite("\033[200~", 6, 0);
620 ttywrite((char *)data, nitems * format / 8, 1);
621 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
622 ttywrite("\033[201~", 6, 0);
623 XFree(data);
624 /* number of 32-bit chunks returned */
625 ofs += nitems * format / 32;
626 } while (rem > 0);
627
628 /*
629 * Deleting the property again tells the selection owner to send the
630 * next data chunk in the property.
631 */
632 XDeleteProperty(xw.dpy, xw.win, (int)property);
633 }
634
635 void
636 xclipcopy(void)
637 {
638 clipcopy(NULL);
639 }
640
641 void
642 selclear_(XEvent *e)
643 {
644 selclear();
645 }
646
647 void
648 selrequest(XEvent *e)
649 {
650 XSelectionRequestEvent *xsre;
651 XSelectionEvent xev;
652 Atom xa_targets, string, clipboard;
653 char *seltext;
654
655 xsre = (XSelectionRequestEvent *) e;
656 xev.type = SelectionNotify;
657 xev.requestor = xsre->requestor;
658 xev.selection = xsre->selection;
659 xev.target = xsre->target;
660 xev.time = xsre->time;
661 if (xsre->property == None)
662 xsre->property = xsre->target;
663
664 /* reject */
665 xev.property = None;
666
667 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
668 if (xsre->target == xa_targets) {
669 /* respond with the supported type */
670 string = xsel.xtarget;
671 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
672 XA_ATOM, 32, PropModeReplace,
673 (uchar *) &string, 1);
674 xev.property = xsre->property;
675 } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
676 /*
677 * xith XA_STRING non ascii characters may be incorrect in the
678 * requestor. It is not our problem, use utf8.
679 */
680 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
681 if (xsre->selection == XA_PRIMARY) {
682 seltext = xsel.primary;
683 } else if (xsre->selection == clipboard) {
684 seltext = xsel.clipboard;
685 } else {
686 fprintf(stderr,
687 "Unhandled clipboard selection 0x%lx\n",
688 xsre->selection);
689 return;
690 }
691 if (seltext != NULL) {
692 XChangeProperty(xsre->display, xsre->requestor,
693 xsre->property, xsre->target,
694 8, PropModeReplace,
695 (uchar *)seltext, strlen(seltext));
696 xev.property = xsre->property;
697 }
698 }
699
700 /* all done, send a notification to the listener */
701 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
702 fprintf(stderr, "Error sending SelectionNotify event\n");
703 }
704
705 void
706 setsel(char *str, Time t)
707 {
708 if (!str)
709 return;
710
711 free(xsel.primary);
712 xsel.primary = str;
713
714 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
715 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
716 selclear();
717 }
718
719 void
720 xsetsel(char *str)
721 {
722 setsel(str, CurrentTime);
723 }
724
725 void
726 brelease(XEvent *e)
727 {
728 int btn = e->xbutton.button;
729
730 if (1 <= btn && btn <= 11)
731 buttons &= ~(1 << (btn-1));
732
733 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
734 mousereport(e);
735 return;
736 }
737
738 if (mouseaction(e, 1))
739 return;
740 if (btn == Button1)
741 mousesel(e, 1);
742 }
743
744 void
745 bmotion(XEvent *e)
746 {
747 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
748 mousereport(e);
749 return;
750 }
751
752 mousesel(e, 0);
753 }
754
755 void
756 cresize(int width, int height)
757 {
758 int col, row;
759
760 if (width != 0)
761 win.w = width;
762 if (height != 0)
763 win.h = height;
764
765 col = (win.w - 2 * borderpx) / win.cw;
766 row = (win.h - 2 * borderpx) / win.ch;
767 col = MAX(1, col);
768 row = MAX(1, row);
769
770 tresize(col, row);
771 xresize(col, row);
772 ttyresize(win.tw, win.th);
773 }
774
775 void
776 xresize(int col, int row)
777 {
778 win.tw = col * win.cw;
779 win.th = row * win.ch;
780
781 XFreePixmap(xw.dpy, xw.buf);
782 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
783 DefaultDepth(xw.dpy, xw.scr));
784 XftDrawChange(xw.draw, xw.buf);
785 xclear(0, 0, win.w, win.h);
786
787 /* resize to new width */
788 xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
789 }
790
791 ushort
792 sixd_to_16bit(int x)
793 {
794 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
795 }
796
797 int
798 xloadcolor(int i, const char *name, Color *ncolor)
799 {
800 XRenderColor color = { .alpha = 0xffff };
801
802 if (!name) {
803 if (BETWEEN(i, 16, 255)) { /* 256 color */
804 if (i < 6*6*6+16) { /* same colors as xterm */
805 color.red = sixd_to_16bit( ((i-16)/36)%6 );
806 color.green = sixd_to_16bit( ((i-16)/6) %6 );
807 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
808 } else { /* greyscale */
809 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
810 color.green = color.blue = color.red;
811 }
812 return XftColorAllocValue(xw.dpy, xw.vis,
813 xw.cmap, &color, ncolor);
814 } else
815 if (invertcolors)
816 name = altcolorname[i];
817 else
818 name = colorname[i];
819 }
820
821 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
822 }
823
824 void
825 xloadcols(void)
826 {
827 int i;
828 static int loaded;
829 Color *cp;
830
831 if (loaded) {
832 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
833 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
834 } else {
835 dc.collen = MAX(LEN(colorname), 256);
836 dc.col = xmalloc(dc.collen * sizeof(Color));
837 }
838
839 for (i = 0; i < dc.collen; i++)
840 if (!xloadcolor(i, NULL, &dc.col[i])) {
841 if (colorname[i])
842 die("could not allocate color '%s'\n", colorname[i]);
843 else
844 die("could not allocate color %d\n", i);
845 }
846 loaded = 1;
847 }
848
849 int
850 xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b)
851 {
852 if (!BETWEEN(x, 0, dc.collen))
853 return 1;
854
855 *r = dc.col[x].color.red >> 8;
856 *g = dc.col[x].color.green >> 8;
857 *b = dc.col[x].color.blue >> 8;
858
859 return 0;
860 }
861
862 int
863 xsetcolorname(int x, const char *name)
864 {
865 Color ncolor;
866
867 if (!BETWEEN(x, 0, dc.collen))
868 return 1;
869
870 if (!xloadcolor(x, name, &ncolor))
871 return 1;
872
873 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
874 dc.col[x] = ncolor;
875
876 return 0;
877 }
878
879 /*
880 * Absolute coordinates.
881 */
882 void
883 xclear(int x1, int y1, int x2, int y2)
884 {
885 Color c;
886 c = dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg];
887 /*if (invertcolors)
888 c = invertedcolor(&c);*/
889 XftDrawRect(xw.draw, &c, x1, y1, x2-x1, y2-y1);
890 }
891
892 void
893 xhints(void)
894 {
895 XClassHint class = {opt_name ? opt_name : termname,
896 opt_class ? opt_class : termname};
897 XWMHints wm = {.flags = InputHint, .input = 1};
898 XSizeHints *sizeh;
899
900 sizeh = XAllocSizeHints();
901
902 sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
903 sizeh->height = win.h;
904 sizeh->width = win.w;
905 sizeh->height_inc = win.ch;
906 sizeh->width_inc = win.cw;
907 sizeh->base_height = 2 * borderpx;
908 sizeh->base_width = 2 * borderpx;
909 sizeh->min_height = win.ch + 2 * borderpx;
910 sizeh->min_width = win.cw + 2 * borderpx;
911 if (xw.isfixed) {
912 sizeh->flags |= PMaxSize;
913 sizeh->min_width = sizeh->max_width = win.w;
914 sizeh->min_height = sizeh->max_height = win.h;
915 }
916 if (xw.gm & (XValue|YValue)) {
917 sizeh->flags |= USPosition | PWinGravity;
918 sizeh->x = xw.l;
919 sizeh->y = xw.t;
920 sizeh->win_gravity = xgeommasktogravity(xw.gm);
921 }
922
923 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
924 &class);
925 XFree(sizeh);
926 }
927
928 int
929 xgeommasktogravity(int mask)
930 {
931 switch (mask & (XNegative|YNegative)) {
932 case 0:
933 return NorthWestGravity;
934 case XNegative:
935 return NorthEastGravity;
936 case YNegative:
937 return SouthWestGravity;
938 }
939
940 return SouthEastGravity;
941 }
942
943 int
944 xloadfont(Font *f, FcPattern *pattern)
945 {
946 FcPattern *configured;
947 FcPattern *match;
948 FcResult result;
949 XGlyphInfo extents;
950 int wantattr, haveattr;
951
952 /*
953 * Manually configure instead of calling XftMatchFont
954 * so that we can use the configured pattern for
955 * "missing glyph" lookups.
956 */
957 configured = FcPatternDuplicate(pattern);
958 if (!configured)
959 return 1;
960
961 FcConfigSubstitute(NULL, configured, FcMatchPattern);
962 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
963
964 match = FcFontMatch(NULL, configured, &result);
965 if (!match) {
966 FcPatternDestroy(configured);
967 return 1;
968 }
969
970 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
971 FcPatternDestroy(configured);
972 FcPatternDestroy(match);
973 return 1;
974 }
975
976 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
977 XftResultMatch)) {
978 /*
979 * Check if xft was unable to find a font with the appropriate
980 * slant but gave us one anyway. Try to mitigate.
981 */
982 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
983 &haveattr) != XftResultMatch) || haveattr < wantattr) {
984 f->badslant = 1;
985 fputs("font slant does not match\n", stderr);
986 }
987 }
988
989 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
990 XftResultMatch)) {
991 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
992 &haveattr) != XftResultMatch) || haveattr != wantattr) {
993 f->badweight = 1;
994 fputs("font weight does not match\n", stderr);
995 }
996 }
997
998 XftTextExtentsUtf8(xw.dpy, f->match,
999 (const FcChar8 *) ascii_printable,
1000 strlen(ascii_printable), &extents);
1001
1002 f->set = NULL;
1003 f->pattern = configured;
1004
1005 f->ascent = f->match->ascent;
1006 f->descent = f->match->descent;
1007 f->lbearing = 0;
1008 f->rbearing = f->match->max_advance_width;
1009
1010 f->height = f->ascent + f->descent;
1011 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
1012
1013 return 0;
1014 }
1015
1016 void
1017 xloadfonts(const char *fontstr, double fontsize)
1018 {
1019 FcPattern *pattern;
1020 double fontval;
1021
1022 if (fontstr[0] == '-')
1023 pattern = XftXlfdParse(fontstr, False, False);
1024 else
1025 pattern = FcNameParse((const FcChar8 *)fontstr);
1026
1027 if (!pattern)
1028 die("can't open font %s\n", fontstr);
1029
1030 if (fontsize > 1) {
1031 FcPatternDel(pattern, FC_PIXEL_SIZE);
1032 FcPatternDel(pattern, FC_SIZE);
1033 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
1034 usedfontsize = fontsize;
1035 } else {
1036 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
1037 FcResultMatch) {
1038 usedfontsize = fontval;
1039 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
1040 FcResultMatch) {
1041 usedfontsize = -1;
1042 } else {
1043 /*
1044 * Default font size is 12, if none given. This is to
1045 * have a known usedfontsize value.
1046 */
1047 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
1048 usedfontsize = 12;
1049 }
1050 defaultfontsize = usedfontsize;
1051 }
1052
1053 if (xloadfont(&dc.font, pattern))
1054 die("can't open font %s\n", fontstr);
1055
1056 if (usedfontsize < 0) {
1057 FcPatternGetDouble(dc.font.match->pattern,
1058 FC_PIXEL_SIZE, 0, &fontval);
1059 usedfontsize = fontval;
1060 if (fontsize == 0)
1061 defaultfontsize = fontval;
1062 }
1063
1064 /* Setting character width and height. */
1065 win.cw = ceilf(dc.font.width * cwscale);
1066 win.ch = ceilf(dc.font.height * chscale);
1067
1068 FcPatternDel(pattern, FC_SLANT);
1069 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
1070 if (xloadfont(&dc.ifont, pattern))
1071 die("can't open font %s\n", fontstr);
1072
1073 FcPatternDel(pattern, FC_WEIGHT);
1074 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
1075 if (xloadfont(&dc.ibfont, pattern))
1076 die("can't open font %s\n", fontstr);
1077
1078 FcPatternDel(pattern, FC_SLANT);
1079 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
1080 if (xloadfont(&dc.bfont, pattern))
1081 die("can't open font %s\n", fontstr);
1082
1083 FcPatternDestroy(pattern);
1084 }
1085
1086 void
1087 xunloadfont(Font *f)
1088 {
1089 XftFontClose(xw.dpy, f->match);
1090 FcPatternDestroy(f->pattern);
1091 if (f->set)
1092 FcFontSetDestroy(f->set);
1093 }
1094
1095 void
1096 xunloadfonts(void)
1097 {
1098 /* Free the loaded fonts in the font cache. */
1099 while (frclen > 0)
1100 XftFontClose(xw.dpy, frc[--frclen].font);
1101
1102 xunloadfont(&dc.font);
1103 xunloadfont(&dc.bfont);
1104 xunloadfont(&dc.ifont);
1105 xunloadfont(&dc.ibfont);
1106 }
1107
1108 int
1109 ximopen(Display *dpy)
1110 {
1111 XIMCallback imdestroy = { .client_data = NULL, .callback = ximdestroy };
1112 XICCallback icdestroy = { .client_data = NULL, .callback = xicdestroy };
1113
1114 xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
1115 if (xw.ime.xim == NULL)
1116 return 0;
1117
1118 if (XSetIMValues(xw.ime.xim, XNDestroyCallback, &imdestroy, NULL))
1119 fprintf(stderr, "XSetIMValues: "
1120 "Could not set XNDestroyCallback.\n");
1121
1122 xw.ime.spotlist = XVaCreateNestedList(0, XNSpotLocation, &xw.ime.spot,
1123 NULL);
1124
1125 if (xw.ime.xic == NULL) {
1126 xw.ime.xic = XCreateIC(xw.ime.xim, XNInputStyle,
1127 XIMPreeditNothing | XIMStatusNothing,
1128 XNClientWindow, xw.win,
1129 XNDestroyCallback, &icdestroy,
1130 NULL);
1131 }
1132 if (xw.ime.xic == NULL)
1133 fprintf(stderr, "XCreateIC: Could not create input context.\n");
1134
1135 return 1;
1136 }
1137
1138 void
1139 ximinstantiate(Display *dpy, XPointer client, XPointer call)
1140 {
1141 if (ximopen(dpy))
1142 XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1143 ximinstantiate, NULL);
1144 }
1145
1146 void
1147 ximdestroy(XIM xim, XPointer client, XPointer call)
1148 {
1149 xw.ime.xim = NULL;
1150 XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1151 ximinstantiate, NULL);
1152 XFree(xw.ime.spotlist);
1153 }
1154
1155 int
1156 xicdestroy(XIC xim, XPointer client, XPointer call)
1157 {
1158 xw.ime.xic = NULL;
1159 return 1;
1160 }
1161
1162 void
1163 xinit(int cols, int rows)
1164 {
1165 XGCValues gcvalues;
1166 Cursor cursor;
1167 Window parent;
1168 pid_t thispid = getpid();
1169 XColor xmousefg, xmousebg;
1170
1171 if (!(xw.dpy = XOpenDisplay(NULL)))
1172 die("can't open display\n");
1173 xw.scr = XDefaultScreen(xw.dpy);
1174 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
1175
1176 /* font */
1177 if (!FcInit())
1178 die("could not init fontconfig.\n");
1179
1180 usedfont = (opt_font == NULL)? font : opt_font;
1181 xloadfonts(usedfont, 0);
1182
1183 /* colors */
1184 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1185 xloadcols();
1186
1187 /* adjust fixed window geometry */
1188 win.w = 2 * borderpx + cols * win.cw;
1189 win.h = 2 * borderpx + rows * win.ch;
1190 if (xw.gm & XNegative)
1191 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
1192 if (xw.gm & YNegative)
1193 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
1194
1195 /* Events */
1196 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
1197 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
1198 xw.attrs.bit_gravity = NorthWestGravity;
1199 xw.attrs.event_mask = FocusChangeMask | KeyPressMask | KeyReleaseMask
1200 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1201 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
1202 xw.attrs.colormap = xw.cmap;
1203
1204 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
1205 parent = XRootWindow(xw.dpy, xw.scr);
1206 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
1207 win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1208 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
1209 | CWEventMask | CWColormap, &xw.attrs);
1210
1211 memset(&gcvalues, 0, sizeof(gcvalues));
1212 gcvalues.graphics_exposures = False;
1213 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
1214 &gcvalues);
1215 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
1216 DefaultDepth(xw.dpy, xw.scr));
1217 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
1218 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
1219
1220 /* font spec buffer */
1221 xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
1222
1223 /* Xft rendering context */
1224 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
1225
1226 /* input methods */
1227 if (!ximopen(xw.dpy)) {
1228 XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1229 ximinstantiate, NULL);
1230 }
1231
1232 /* white cursor, black outline */
1233 cursor = XCreateFontCursor(xw.dpy, mouseshape);
1234 XDefineCursor(xw.dpy, xw.win, cursor);
1235
1236 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
1237 xmousefg.red = 0xffff;
1238 xmousefg.green = 0xffff;
1239 xmousefg.blue = 0xffff;
1240 }
1241
1242 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
1243 xmousebg.red = 0x0000;
1244 xmousebg.green = 0x0000;
1245 xmousebg.blue = 0x0000;
1246 }
1247
1248 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
1249
1250 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1251 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
1252 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
1253 xw.netwmiconname = XInternAtom(xw.dpy, "_NET_WM_ICON_NAME", False);
1254 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
1255
1256 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
1257 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
1258 PropModeReplace, (uchar *)&thispid, 1);
1259
1260 win.mode = MODE_NUMLOCK;
1261 resettitle();
1262 xhints();
1263 XMapWindow(xw.dpy, xw.win);
1264 XSync(xw.dpy, False);
1265
1266 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
1267 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
1268 xsel.primary = NULL;
1269 xsel.clipboard = NULL;
1270 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
1271 if (xsel.xtarget == None)
1272 xsel.xtarget = XA_STRING;
1273 }
1274
1275 int
1276 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
1277 {
1278 float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
1279 ushort mode, prevmode = USHRT_MAX;
1280 Font *font = &dc.font;
1281 int frcflags = FRC_NORMAL;
1282 float runewidth = win.cw;
1283 Rune rune;
1284 FT_UInt glyphidx;
1285 FcResult fcres;
1286 FcPattern *fcpattern, *fontpattern;
1287 FcFontSet *fcsets[] = { NULL };
1288 FcCharSet *fccharset;
1289 int i, f, numspecs = 0;
1290
1291 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1292 /* Fetch rune and mode for current glyph. */
1293 rune = glyphs[i].u;
1294 mode = glyphs[i].mode;
1295
1296 /* Skip dummy wide-character spacing. */
1297 if (mode == ATTR_WDUMMY)
1298 continue;
1299
1300 /* Determine font for glyph if different from previous glyph. */
1301 if (prevmode != mode) {
1302 prevmode = mode;
1303 font = &dc.font;
1304 frcflags = FRC_NORMAL;
1305 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1306 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1307 font = &dc.ibfont;
1308 frcflags = FRC_ITALICBOLD;
1309 } else if (mode & ATTR_ITALIC) {
1310 font = &dc.ifont;
1311 frcflags = FRC_ITALIC;
1312 } else if (mode & ATTR_BOLD) {
1313 font = &dc.bfont;
1314 frcflags = FRC_BOLD;
1315 }
1316 yp = winy + font->ascent;
1317 }
1318
1319 /* Lookup character index with default font. */
1320 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1321 if (glyphidx) {
1322 specs[numspecs].font = font->match;
1323 specs[numspecs].glyph = glyphidx;
1324 specs[numspecs].x = (short)xp;
1325 specs[numspecs].y = (short)yp;
1326 xp += runewidth;
1327 numspecs++;
1328 continue;
1329 }
1330
1331 /* Fallback on font cache, search the font cache for match. */
1332 for (f = 0; f < frclen; f++) {
1333 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1334 /* Everything correct. */
1335 if (glyphidx && frc[f].flags == frcflags)
1336 break;
1337 /* We got a default font for a not found glyph. */
1338 if (!glyphidx && frc[f].flags == frcflags
1339 && frc[f].unicodep == rune) {
1340 break;
1341 }
1342 }
1343
1344 /* Nothing was found. Use fontconfig to find matching font. */
1345 if (f >= frclen) {
1346 if (!font->set)
1347 font->set = FcFontSort(0, font->pattern,
1348 1, 0, &fcres);
1349 fcsets[0] = font->set;
1350
1351 /*
1352 * Nothing was found in the cache. Now use
1353 * some dozen of Fontconfig calls to get the
1354 * font for one single character.
1355 *
1356 * Xft and fontconfig are design failures.
1357 */
1358 fcpattern = FcPatternDuplicate(font->pattern);
1359 fccharset = FcCharSetCreate();
1360
1361 FcCharSetAddChar(fccharset, rune);
1362 FcPatternAddCharSet(fcpattern, FC_CHARSET,
1363 fccharset);
1364 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1365
1366 FcConfigSubstitute(0, fcpattern,
1367 FcMatchPattern);
1368 FcDefaultSubstitute(fcpattern);
1369
1370 fontpattern = FcFontSetMatch(0, fcsets, 1,
1371 fcpattern, &fcres);
1372
1373 /* Allocate memory for the new cache entry. */
1374 if (frclen >= frccap) {
1375 frccap += 16;
1376 frc = xrealloc(frc, frccap * sizeof(Fontcache));
1377 }
1378
1379 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1380 fontpattern);
1381 if (!frc[frclen].font)
1382 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1383 strerror(errno));
1384 frc[frclen].flags = frcflags;
1385 frc[frclen].unicodep = rune;
1386
1387 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1388
1389 f = frclen;
1390 frclen++;
1391
1392 FcPatternDestroy(fcpattern);
1393 FcCharSetDestroy(fccharset);
1394 }
1395
1396 specs[numspecs].font = frc[f].font;
1397 specs[numspecs].glyph = glyphidx;
1398 specs[numspecs].x = (short)xp;
1399 specs[numspecs].y = (short)yp;
1400 xp += runewidth;
1401 numspecs++;
1402 }
1403
1404 return numspecs;
1405 }
1406
1407 void
1408 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1409 {
1410 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1411 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1412 width = charlen * win.cw;
1413 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1414 XRenderColor colfg, colbg;
1415 XRectangle r;
1416
1417 /* Fallback on color display for attributes not supported by the font */
1418 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1419 if (dc.ibfont.badslant || dc.ibfont.badweight)
1420 base.fg = defaultattr;
1421 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1422 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1423 base.fg = defaultattr;
1424 }
1425
1426 if (IS_TRUECOL(base.fg)) {
1427 colfg.alpha = 0xffff;
1428 colfg.red = TRUERED(base.fg);
1429 colfg.green = TRUEGREEN(base.fg);
1430 colfg.blue = TRUEBLUE(base.fg);
1431 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1432 fg = &truefg;
1433 } else {
1434 fg = &dc.col[base.fg];
1435 }
1436
1437 if (IS_TRUECOL(base.bg)) {
1438 colbg.alpha = 0xffff;
1439 colbg.green = TRUEGREEN(base.bg);
1440 colbg.red = TRUERED(base.bg);
1441 colbg.blue = TRUEBLUE(base.bg);
1442 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1443 bg = &truebg;
1444 } else {
1445 bg = &dc.col[base.bg];
1446 }
1447
1448 /* Change basic system colors [0-7] to bright system colors [8-15] */
1449 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1450 fg = &dc.col[base.fg + 8];
1451
1452 if (IS_SET(MODE_REVERSE)) {
1453 if (fg == &dc.col[defaultfg]) {
1454 fg = &dc.col[defaultbg];
1455 } else {
1456 colfg.red = ~fg->color.red;
1457 colfg.green = ~fg->color.green;
1458 colfg.blue = ~fg->color.blue;
1459 colfg.alpha = fg->color.alpha;
1460 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1461 &revfg);
1462 fg = &revfg;
1463 }
1464
1465 if (bg == &dc.col[defaultbg]) {
1466 bg = &dc.col[defaultfg];
1467 } else {
1468 colbg.red = ~bg->color.red;
1469 colbg.green = ~bg->color.green;
1470 colbg.blue = ~bg->color.blue;
1471 colbg.alpha = bg->color.alpha;
1472 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1473 &revbg);
1474 bg = &revbg;
1475 }
1476 }
1477
1478 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1479 colfg.red = fg->color.red / 2;
1480 colfg.green = fg->color.green / 2;
1481 colfg.blue = fg->color.blue / 2;
1482 colfg.alpha = fg->color.alpha;
1483 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1484 fg = &revfg;
1485 }
1486
1487 if (base.mode & ATTR_REVERSE) {
1488 temp = fg;
1489 fg = bg;
1490 bg = temp;
1491 }
1492
1493 if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
1494 fg = bg;
1495
1496 if (base.mode & ATTR_INVISIBLE)
1497 fg = bg;
1498
1499 /*if (invertcolors) {
1500 revfg = invertedcolor(fg);
1501 revbg = invertedcolor(bg);
1502 fg = &revfg;
1503 bg = &revbg;
1504 }*/
1505
1506 /* Intelligent cleaning up of the borders. */
1507 if (x == 0) {
1508 xclear(0, (y == 0)? 0 : winy, borderpx,
1509 winy + win.ch +
1510 ((winy + win.ch >= borderpx + win.th)? win.h : 0));
1511 }
1512 if (winx + width >= borderpx + win.tw) {
1513 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1514 ((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
1515 }
1516 if (y == 0)
1517 xclear(winx, 0, winx + width, borderpx);
1518 if (winy + win.ch >= borderpx + win.th)
1519 xclear(winx, winy + win.ch, winx + width, win.h);
1520
1521 /* Clean up the region we want to draw to. */
1522 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1523
1524 /* Set the clip region because Xft is sometimes dirty. */
1525 r.x = 0;
1526 r.y = 0;
1527 r.height = win.ch;
1528 r.width = width;
1529 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1530
1531 /* Render the glyphs. */
1532 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1533
1534 /* Render underline and strikethrough. */
1535 if (base.mode & ATTR_UNDERLINE) {
1536 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent * chscale + 1,
1537 width, 1);
1538 }
1539
1540 if (base.mode & ATTR_STRUCK) {
1541 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent * chscale / 3,
1542 width, 1);
1543 }
1544
1545 /* Reset clip to none. */
1546 XftDrawSetClip(xw.draw, 0);
1547 }
1548
1549 void
1550 xdrawglyph(Glyph g, int x, int y)
1551 {
1552 int numspecs;
1553 XftGlyphFontSpec spec;
1554
1555 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1556 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1557 }
1558
1559 void
1560 xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
1561 {
1562 Color drawcol;
1563
1564 /* remove the old cursor */
1565 if (selected(ox, oy))
1566 og.mode ^= ATTR_REVERSE;
1567 xdrawglyph(og, ox, oy);
1568
1569 if (IS_SET(MODE_HIDE))
1570 return;
1571
1572 /*
1573 * Select the right color for the right mode.
1574 */
1575 g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
1576
1577 if (IS_SET(MODE_REVERSE)) {
1578 g.mode |= ATTR_REVERSE;
1579 g.bg = defaultfg;
1580 if (selected(cx, cy)) {
1581 drawcol = dc.col[defaultcs];
1582 g.fg = defaultrcs;
1583 } else {
1584 drawcol = dc.col[defaultrcs];
1585 g.fg = defaultcs;
1586 }
1587 } else {
1588 if (selected(cx, cy)) {
1589 g.fg = defaultfg;
1590 g.bg = defaultrcs;
1591 } else {
1592 g.fg = defaultbg;
1593 g.bg = defaultcs;
1594 }
1595 drawcol = dc.col[g.bg];
1596 }
1597
1598 /* draw the new one */
1599 if (IS_SET(MODE_FOCUSED)) {
1600 switch (win.cursor) {
1601 case 7: /* st extension */
1602 g.u = 0x2603; /* snowman (U+2603) */
1603 /* FALLTHROUGH */
1604 case 0: /* Blinking Block */
1605 case 1: /* Blinking Block (Default) */
1606 case 2: /* Steady Block */
1607 xdrawglyph(g, cx, cy);
1608 break;
1609 case 3: /* Blinking Underline */
1610 case 4: /* Steady Underline */
1611 XftDrawRect(xw.draw, &drawcol,
1612 borderpx + cx * win.cw,
1613 borderpx + (cy + 1) * win.ch - \
1614 cursorthickness,
1615 win.cw, cursorthickness);
1616 break;
1617 case 5: /* Blinking bar */
1618 case 6: /* Steady bar */
1619 XftDrawRect(xw.draw, &drawcol,
1620 borderpx + cx * win.cw,
1621 borderpx + cy * win.ch,
1622 cursorthickness, win.ch);
1623 break;
1624 }
1625 } else {
1626 XftDrawRect(xw.draw, &drawcol,
1627 borderpx + cx * win.cw,
1628 borderpx + cy * win.ch,
1629 win.cw - 1, 1);
1630 XftDrawRect(xw.draw, &drawcol,
1631 borderpx + cx * win.cw,
1632 borderpx + cy * win.ch,
1633 1, win.ch - 1);
1634 XftDrawRect(xw.draw, &drawcol,
1635 borderpx + (cx + 1) * win.cw - 1,
1636 borderpx + cy * win.ch,
1637 1, win.ch - 1);
1638 XftDrawRect(xw.draw, &drawcol,
1639 borderpx + cx * win.cw,
1640 borderpx + (cy + 1) * win.ch - 1,
1641 win.cw, 1);
1642 }
1643 }
1644
1645 void
1646 xsetenv(void)
1647 {
1648 char buf[sizeof(long) * 8 + 1];
1649
1650 snprintf(buf, sizeof(buf), "%lu", xw.win);
1651 setenv("WINDOWID", buf, 1);
1652 }
1653
1654 void
1655 xseticontitle(char *p)
1656 {
1657 XTextProperty prop;
1658 DEFAULT(p, opt_title);
1659
1660 if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1661 &prop) != Success)
1662 return;
1663 XSetWMIconName(xw.dpy, xw.win, &prop);
1664 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmiconname);
1665 XFree(prop.value);
1666 }
1667
1668 void
1669 xsettitle(char *p)
1670 {
1671 XTextProperty prop;
1672 DEFAULT(p, opt_title);
1673
1674 if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1675 &prop) != Success)
1676 return;
1677 XSetWMName(xw.dpy, xw.win, &prop);
1678 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1679 XFree(prop.value);
1680 }
1681
1682 int
1683 xstartdraw(void)
1684 {
1685 return IS_SET(MODE_VISIBLE);
1686 }
1687
1688 void
1689 xdrawline(Line line, int x1, int y1, int x2)
1690 {
1691 int i, x, ox, numspecs;
1692 Glyph base, new;
1693 XftGlyphFontSpec *specs = xw.specbuf;
1694
1695 numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
1696 i = ox = 0;
1697 for (x = x1; x < x2 && i < numspecs; x++) {
1698 new = line[x];
1699 if (new.mode == ATTR_WDUMMY)
1700 continue;
1701 if (selected(x, y1))
1702 new.mode ^= ATTR_REVERSE;
1703 if (i > 0 && ATTRCMP(base, new)) {
1704 xdrawglyphfontspecs(specs, base, i, ox, y1);
1705 specs += i;
1706 numspecs -= i;
1707 i = 0;
1708 }
1709 if (i == 0) {
1710 ox = x;
1711 base = new;
1712 }
1713 i++;
1714 }
1715 if (i > 0)
1716 xdrawglyphfontspecs(specs, base, i, ox, y1);
1717 }
1718
1719 void
1720 xfinishdraw(void)
1721 {
1722 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1723 win.h, 0, 0);
1724 XSetForeground(xw.dpy, dc.gc,
1725 dc.col[IS_SET(MODE_REVERSE)?
1726 defaultfg : defaultbg].pixel);
1727 }
1728
1729 void
1730 xximspot(int x, int y)
1731 {
1732 if (xw.ime.xic == NULL)
1733 return;
1734
1735 xw.ime.spot.x = borderpx + x * win.cw;
1736 xw.ime.spot.y = borderpx + (y + 1) * win.ch;
1737
1738 XSetICValues(xw.ime.xic, XNPreeditAttributes, xw.ime.spotlist, NULL);
1739 }
1740
1741 void
1742 expose(XEvent *ev)
1743 {
1744 redraw();
1745 }
1746
1747 void
1748 visibility(XEvent *ev)
1749 {
1750 XVisibilityEvent *e = &ev->xvisibility;
1751
1752 MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
1753 }
1754
1755 void
1756 unmap(XEvent *ev)
1757 {
1758 win.mode &= ~MODE_VISIBLE;
1759 }
1760
1761 void
1762 xsetpointermotion(int set)
1763 {
1764 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1765 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1766 }
1767
1768 void
1769 xsetmode(int set, unsigned int flags)
1770 {
1771 int mode = win.mode;
1772 MODBIT(win.mode, set, flags);
1773 if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
1774 redraw();
1775 }
1776
1777 int
1778 xsetcursor(int cursor)
1779 {
1780 if (!BETWEEN(cursor, 0, 7)) /* 7: st extension */
1781 return 1;
1782 win.cursor = cursor;
1783 return 0;
1784 }
1785
1786 void
1787 xseturgency(int add)
1788 {
1789 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1790
1791 MODBIT(h->flags, add, XUrgencyHint);
1792 XSetWMHints(xw.dpy, xw.win, h);
1793 XFree(h);
1794 }
1795
1796 void
1797 xbell(void)
1798 {
1799 if (!(IS_SET(MODE_FOCUSED)))
1800 xseturgency(1);
1801 if (bellvolume)
1802 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1803 }
1804
1805 void
1806 focus(XEvent *ev)
1807 {
1808 XFocusChangeEvent *e = &ev->xfocus;
1809
1810 if (e->mode == NotifyGrab)
1811 return;
1812
1813 if (ev->type == FocusIn) {
1814 if (xw.ime.xic)
1815 XSetICFocus(xw.ime.xic);
1816 win.mode |= MODE_FOCUSED;
1817 xseturgency(0);
1818 if (IS_SET(MODE_FOCUS))
1819 ttywrite("\033[I", 3, 0);
1820 } else {
1821 if (xw.ime.xic)
1822 XUnsetICFocus(xw.ime.xic);
1823 win.mode &= ~MODE_FOCUSED;
1824 if (IS_SET(MODE_FOCUS))
1825 ttywrite("\033[O", 3, 0);
1826 }
1827 }
1828
1829 int
1830 match(uint mask, uint state)
1831 {
1832 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1833 }
1834
1835 char*
1836 kmap(KeySym k, uint state)
1837 {
1838 Key *kp;
1839 int i;
1840
1841 /* Check for mapped keys out of X11 function keys. */
1842 for (i = 0; i < LEN(mappedkeys); i++) {
1843 if (mappedkeys[i] == k)
1844 break;
1845 }
1846 if (i == LEN(mappedkeys)) {
1847 if ((k & 0xFFFF) < 0xFD00)
1848 return NULL;
1849 }
1850
1851 for (kp = key; kp < key + LEN(key); kp++) {
1852 if (kp->k != k)
1853 continue;
1854
1855 if (!match(kp->mask, state))
1856 continue;
1857
1858 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1859 continue;
1860 if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
1861 continue;
1862
1863 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1864 continue;
1865
1866 return kp->s;
1867 }
1868
1869 return NULL;
1870 }
1871
1872 void
1873 kpress(XEvent *ev)
1874 {
1875 XKeyEvent *e = &ev->xkey;
1876 KeySym ksym;
1877 char buf[64], *customkey;
1878 int len;
1879 Rune c;
1880 Status status;
1881 Shortcut *bp;
1882
1883 if (IS_SET(MODE_KBDLOCK))
1884 return;
1885
1886 if (xw.ime.xic)
1887 len = XmbLookupString(xw.ime.xic, e, buf, sizeof buf, &ksym, &status);
1888 else
1889 len = XLookupString(e, buf, sizeof buf, &ksym, NULL);
1890 /* 1. shortcuts */
1891 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
1892 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1893 bp->func(&(bp->arg));
1894 return;
1895 }
1896 }
1897
1898 /* 2. custom keys from config.h */
1899 if ((customkey = kmap(ksym, e->state))) {
1900 ttywrite(customkey, strlen(customkey), 1);
1901 return;
1902 }
1903
1904 /* 3. composed string from input method */
1905 if (len == 0)
1906 return;
1907 if (len == 1 && e->state & Mod1Mask) {
1908 if (IS_SET(MODE_8BIT)) {
1909 if (*buf < 0177) {
1910 c = *buf | 0x80;
1911 len = utf8encode(c, buf);
1912 }
1913 } else {
1914 buf[1] = buf[0];
1915 buf[0] = '\033';
1916 len = 2;
1917 }
1918 }
1919 ttywrite(buf, len, 1);
1920 }
1921
1922 void
1923 cmessage(XEvent *e)
1924 {
1925 /*
1926 * See xembed specs
1927 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1928 */
1929 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1930 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1931 win.mode |= MODE_FOCUSED;
1932 xseturgency(0);
1933 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1934 win.mode &= ~MODE_FOCUSED;
1935 }
1936 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1937 ttyhangup();
1938 exit(0);
1939 }
1940 }
1941
1942 void
1943 resize(XEvent *e)
1944 {
1945 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1946 return;
1947
1948 cresize(e->xconfigure.width, e->xconfigure.height);
1949 }
1950
1951 void
1952 run(void)
1953 {
1954 XEvent ev;
1955 int w = win.w, h = win.h;
1956 fd_set rfd;
1957 int xfd = XConnectionNumber(xw.dpy), ttyfd, xev, drawing;
1958 struct timespec seltv, *tv, now, lastblink, trigger;
1959 double timeout;
1960
1961 /* Waiting for window mapping */
1962 do {
1963 XNextEvent(xw.dpy, &ev);
1964 /*
1965 * This XFilterEvent call is required because of XOpenIM. It
1966 * does filter out the key event and some client message for
1967 * the input method too.
1968 */
1969 if (XFilterEvent(&ev, None))
1970 continue;
1971 if (ev.type == ConfigureNotify) {
1972 w = ev.xconfigure.width;
1973 h = ev.xconfigure.height;
1974 }
1975 } while (ev.type != MapNotify);
1976
1977 ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
1978 cresize(w, h);
1979
1980 for (timeout = -1, drawing = 0, lastblink = (struct timespec){0};;) {
1981 FD_ZERO(&rfd);
1982 FD_SET(ttyfd, &rfd);
1983 FD_SET(xfd, &rfd);
1984
1985 if (XPending(xw.dpy))
1986 timeout = 0; /* existing events might not set xfd */
1987
1988 seltv.tv_sec = timeout / 1E3;
1989 seltv.tv_nsec = 1E6 * (timeout - 1E3 * seltv.tv_sec);
1990 tv = timeout >= 0 ? &seltv : NULL;
1991
1992 if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1993 if (errno == EINTR)
1994 continue;
1995 die("select failed: %s\n", strerror(errno));
1996 }
1997 clock_gettime(CLOCK_MONOTONIC, &now);
1998
1999 if (FD_ISSET(ttyfd, &rfd))
2000 ttyread();
2001
2002 xev = 0;
2003 while (XPending(xw.dpy)) {
2004 xev = 1;
2005 XNextEvent(xw.dpy, &ev);
2006 if (XFilterEvent(&ev, None))
2007 continue;
2008 if (handler[ev.type])
2009 (handler[ev.type])(&ev);
2010 }
2011
2012 /*
2013 * To reduce flicker and tearing, when new content or event
2014 * triggers drawing, we first wait a bit to ensure we got
2015 * everything, and if nothing new arrives - we draw.
2016 * We start with trying to wait minlatency ms. If more content
2017 * arrives sooner, we retry with shorter and shorter periods,
2018 * and eventually draw even without idle after maxlatency ms.
2019 * Typically this results in low latency while interacting,
2020 * maximum latency intervals during `cat huge.txt`, and perfect
2021 * sync with periodic updates from animations/key-repeats/etc.
2022 */
2023 if (FD_ISSET(ttyfd, &rfd) || xev) {
2024 if (!drawing) {
2025 trigger = now;
2026 drawing = 1;
2027 }
2028 timeout = (maxlatency - TIMEDIFF(now, trigger)) \
2029 / maxlatency * minlatency;
2030 if (timeout > 0)
2031 continue; /* we have time, try to find idle */
2032 }
2033
2034 /* idle detected or maxlatency exhausted -> draw */
2035 timeout = -1;
2036 if (blinktimeout && tattrset(ATTR_BLINK)) {
2037 timeout = blinktimeout - TIMEDIFF(now, lastblink);
2038 if (timeout <= 0) {
2039 if (-timeout > blinktimeout) /* start visible */
2040 win.mode |= MODE_BLINK;
2041 win.mode ^= MODE_BLINK;
2042 tsetdirtattr(ATTR_BLINK);
2043 lastblink = now;
2044 timeout = blinktimeout;
2045 }
2046 }
2047
2048 draw();
2049 XFlush(xw.dpy);
2050 drawing = 0;
2051 }
2052 }
2053
2054 void
2055 usage(void)
2056 {
2057 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
2058 " [-n name] [-o file]\n"
2059 " [-T title] [-t title] [-w windowid]"
2060 " [[-e] command [args ...]]\n"
2061 " %s [-aiv] [-c class] [-f font] [-g geometry]"
2062 " [-n name] [-o file]\n"
2063 " [-T title] [-t title] [-w windowid] -l line"
2064 " [stty_args ...]\n", argv0, argv0);
2065 }
2066
2067 int
2068 main(int argc, char *argv[])
2069 {
2070 xw.l = xw.t = 0;
2071 xw.isfixed = False;
2072 xsetcursor(cursorshape);
2073
2074 ARGBEGIN {
2075 case 'a':
2076 allowaltscreen = 0;
2077 break;
2078 case 'c':
2079 opt_class = EARGF(usage());
2080 break;
2081 case 'e':
2082 if (argc > 0)
2083 --argc, ++argv;
2084 goto run;
2085 case 'f':
2086 opt_font = EARGF(usage());
2087 break;
2088 case 'g':
2089 xw.gm = XParseGeometry(EARGF(usage()),
2090 &xw.l, &xw.t, &cols, &rows);
2091 break;
2092 case 'i':
2093 xw.isfixed = 1;
2094 break;
2095 case 'o':
2096 opt_io = EARGF(usage());
2097 break;
2098 case 'l':
2099 opt_line = EARGF(usage());
2100 break;
2101 case 'n':
2102 opt_name = EARGF(usage());
2103 break;
2104 case 't':
2105 case 'T':
2106 opt_title = EARGF(usage());
2107 break;
2108 case 'w':
2109 opt_embed = EARGF(usage());
2110 break;
2111 case 'v':
2112 die("%s " VERSION "\n", argv0);
2113 break;
2114 default:
2115 usage();
2116 } ARGEND;
2117
2118 run:
2119 if (argc > 0) /* eat all remaining arguments */
2120 opt_cmd = argv;
2121
2122 if (!opt_title)
2123 opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];
2124
2125 setlocale(LC_CTYPE, "");
2126 XSetLocaleModifiers("");
2127 cols = MAX(cols, 1);
2128 rows = MAX(rows, 1);
2129 tnew(cols, rows);
2130 xinit(cols, rows);
2131 xsetenv();
2132 selinit();
2133 run();
2134
2135 return 0;
2136 }