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[st.git] / x.c
1 /* See LICENSE for license details. */
2 #include <errno.h>
3 #include <locale.h>
4 #include <signal.h>
5 #include <stdint.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/Xutil.h>
13 #include <X11/cursorfont.h>
14 #include <X11/keysym.h>
15 #include <X11/Xft/Xft.h>
16 #include <X11/XKBlib.h>
17
18 static char *argv0;
19 #include "arg.h"
20 #include "st.h"
21 #include "win.h"
22
23 /* types used in config.h */
24 typedef struct {
25 uint mod;
26 KeySym keysym;
27 void (*func)(const Arg *);
28 const Arg arg;
29 } Shortcut;
30
31 typedef struct {
32 uint b;
33 uint mask;
34 char *s;
35 } MouseShortcut;
36
37 typedef struct {
38 KeySym k;
39 uint mask;
40 char *s;
41 /* three-valued logic variables: 0 indifferent, 1 on, -1 off */
42 signed char appkey; /* application keypad */
43 signed char appcursor; /* application cursor */
44 } Key;
45
46 /* X modifiers */
47 #define XK_ANY_MOD UINT_MAX
48 #define XK_NO_MOD 0
49 #define XK_SWITCH_MOD (1<<13)
50
51 /* function definitions used in config.h */
52 static void clipcopy(const Arg *);
53 static void clippaste(const Arg *);
54 static void numlock(const Arg *);
55 static void selpaste(const Arg *);
56 static void zoom(const Arg *);
57 static void zoomabs(const Arg *);
58 static void zoomreset(const Arg *);
59
60 /* config.h for applying patches and the configuration. */
61 #include "config.h"
62
63 /* XEMBED messages */
64 #define XEMBED_FOCUS_IN 4
65 #define XEMBED_FOCUS_OUT 5
66
67 /* macros */
68 #define IS_SET(flag) ((win.mode & (flag)) != 0)
69 #define TRUERED(x) (((x) & 0xff0000) >> 8)
70 #define TRUEGREEN(x) (((x) & 0xff00))
71 #define TRUEBLUE(x) (((x) & 0xff) << 8)
72
73 typedef XftDraw *Draw;
74 typedef XftColor Color;
75 typedef XftGlyphFontSpec GlyphFontSpec;
76
77 /* Purely graphic info */
78 typedef struct {
79 Display *dpy;
80 Colormap cmap;
81 Window win;
82 Drawable buf;
83 GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
84 Atom xembed, wmdeletewin, netwmname, netwmpid;
85 XIM xim;
86 XIC xic;
87 Draw draw;
88 Visual *vis;
89 XSetWindowAttributes attrs;
90 int scr;
91 int isfixed; /* is fixed geometry? */
92 int l, t; /* left and top offset */
93 int gm; /* geometry mask */
94 } XWindow;
95
96 typedef struct {
97 Atom xtarget;
98 char *primary, *clipboard;
99 struct timespec tclick1;
100 struct timespec tclick2;
101 } XSelection;
102
103 /* Font structure */
104 #define Font Font_
105 typedef struct {
106 int height;
107 int width;
108 int ascent;
109 int descent;
110 int badslant;
111 int badweight;
112 short lbearing;
113 short rbearing;
114 XftFont *match;
115 FcFontSet *set;
116 FcPattern *pattern;
117 } Font;
118
119 /* Drawing Context */
120 typedef struct {
121 Color *col;
122 size_t collen;
123 Font font, bfont, ifont, ibfont;
124 GC gc;
125 } DC;
126
127 static inline ushort sixd_to_16bit(int);
128 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
129 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
130 static void xdrawglyph(Glyph, int, int);
131 static void xclear(int, int, int, int);
132 static int xgeommasktogravity(int);
133 static void xinit(int, int);
134 static void cresize(int, int);
135 static void xresize(int, int);
136 static int xloadfont(Font *, FcPattern *);
137 static void xloadfonts(char *, double);
138 static void xunloadfont(Font *);
139 static void xunloadfonts(void);
140 static void xsetenv(void);
141 static void xseturgency(int);
142 static int x2col(int);
143 static int y2row(int);
144
145 static void expose(XEvent *);
146 static void visibility(XEvent *);
147 static void unmap(XEvent *);
148 static void kpress(XEvent *);
149 static void cmessage(XEvent *);
150 static void resize(XEvent *);
151 static void focus(XEvent *);
152 static void brelease(XEvent *);
153 static void bpress(XEvent *);
154 static void bmotion(XEvent *);
155 static void propnotify(XEvent *);
156 static void selnotify(XEvent *);
157 static void selclear_(XEvent *);
158 static void selrequest(XEvent *);
159 static void setsel(char *, Time);
160 static void mousesel(XEvent *, int);
161 static void mousereport(XEvent *);
162 static char *kmap(KeySym, uint);
163 static int match(uint, uint);
164
165 static void run(void);
166 static void usage(void);
167
168 static void (*handler[LASTEvent])(XEvent *) = {
169 [KeyPress] = kpress,
170 [ClientMessage] = cmessage,
171 [ConfigureNotify] = resize,
172 [VisibilityNotify] = visibility,
173 [UnmapNotify] = unmap,
174 [Expose] = expose,
175 [FocusIn] = focus,
176 [FocusOut] = focus,
177 [MotionNotify] = bmotion,
178 [ButtonPress] = bpress,
179 [ButtonRelease] = brelease,
180 /*
181 * Uncomment if you want the selection to disappear when you select something
182 * different in another window.
183 */
184 /* [SelectionClear] = selclear_, */
185 [SelectionNotify] = selnotify,
186 /*
187 * PropertyNotify is only turned on when there is some INCR transfer happening
188 * for the selection retrieval.
189 */
190 [PropertyNotify] = propnotify,
191 [SelectionRequest] = selrequest,
192 };
193
194 /* Globals */
195 static DC dc;
196 static XWindow xw;
197 static XSelection xsel;
198 static TermWindow win;
199
200 /* Font Ring Cache */
201 enum {
202 FRC_NORMAL,
203 FRC_ITALIC,
204 FRC_BOLD,
205 FRC_ITALICBOLD
206 };
207
208 typedef struct {
209 XftFont *font;
210 int flags;
211 Rune unicodep;
212 } Fontcache;
213
214 /* Fontcache is an array now. A new font will be appended to the array. */
215 static Fontcache frc[16];
216 static int frclen = 0;
217 static char *usedfont = NULL;
218 static double usedfontsize = 0;
219 static double defaultfontsize = 0;
220
221 static char *opt_class = NULL;
222 static char **opt_cmd = NULL;
223 static char *opt_embed = NULL;
224 static char *opt_font = NULL;
225 static char *opt_io = NULL;
226 static char *opt_line = NULL;
227 static char *opt_name = NULL;
228 static char *opt_title = NULL;
229
230 void
231 clipcopy(const Arg *dummy)
232 {
233 Atom clipboard;
234
235 if (xsel.clipboard != NULL)
236 free(xsel.clipboard);
237
238 if (xsel.primary != NULL) {
239 xsel.clipboard = xstrdup(xsel.primary);
240 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
241 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
242 }
243 }
244
245 void
246 clippaste(const Arg *dummy)
247 {
248 Atom clipboard;
249
250 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
251 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
252 xw.win, CurrentTime);
253 }
254
255 void
256 selpaste(const Arg *dummy)
257 {
258 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
259 xw.win, CurrentTime);
260 }
261
262 void
263 numlock(const Arg *dummy)
264 {
265 win.mode ^= MODE_NUMLOCK;
266 }
267
268 void
269 zoom(const Arg *arg)
270 {
271 Arg larg;
272
273 larg.f = usedfontsize + arg->f;
274 zoomabs(&larg);
275 }
276
277 void
278 zoomabs(const Arg *arg)
279 {
280 xunloadfonts();
281 xloadfonts(usedfont, arg->f);
282 cresize(0, 0);
283 redraw();
284 xhints();
285 }
286
287 void
288 zoomreset(const Arg *arg)
289 {
290 Arg larg;
291
292 if (defaultfontsize > 0) {
293 larg.f = defaultfontsize;
294 zoomabs(&larg);
295 }
296 }
297
298 int
299 x2col(int x)
300 {
301 x -= borderpx;
302 LIMIT(x, 0, win.tw - 1);
303 return x / win.cw;
304 }
305
306 int
307 y2row(int y)
308 {
309 y -= borderpx;
310 LIMIT(y, 0, win.th - 1);
311 return y / win.ch;
312 }
313
314 void
315 mousesel(XEvent *e, int done)
316 {
317 int type, seltype = SEL_REGULAR;
318 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
319
320 for (type = 1; type < LEN(selmasks); ++type) {
321 if (match(selmasks[type], state)) {
322 seltype = type;
323 break;
324 }
325 }
326 selextend(x2col(e->xbutton.x), y2row(e->xbutton.y), seltype, done);
327 if (done)
328 setsel(getsel(), e->xbutton.time);
329 }
330
331 void
332 mousereport(XEvent *e)
333 {
334 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
335 button = e->xbutton.button, state = e->xbutton.state,
336 len;
337 char buf[40];
338 static int ox, oy;
339
340 /* from urxvt */
341 if (e->xbutton.type == MotionNotify) {
342 if (x == ox && y == oy)
343 return;
344 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
345 return;
346 /* MOUSE_MOTION: no reporting if no button is pressed */
347 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
348 return;
349
350 button = oldbutton + 32;
351 ox = x;
352 oy = y;
353 } else {
354 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
355 button = 3;
356 } else {
357 button -= Button1;
358 if (button >= 3)
359 button += 64 - 3;
360 }
361 if (e->xbutton.type == ButtonPress) {
362 oldbutton = button;
363 ox = x;
364 oy = y;
365 } else if (e->xbutton.type == ButtonRelease) {
366 oldbutton = 3;
367 /* MODE_MOUSEX10: no button release reporting */
368 if (IS_SET(MODE_MOUSEX10))
369 return;
370 if (button == 64 || button == 65)
371 return;
372 }
373 }
374
375 if (!IS_SET(MODE_MOUSEX10)) {
376 button += ((state & ShiftMask ) ? 4 : 0)
377 + ((state & Mod4Mask ) ? 8 : 0)
378 + ((state & ControlMask) ? 16 : 0);
379 }
380
381 if (IS_SET(MODE_MOUSESGR)) {
382 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
383 button, x+1, y+1,
384 e->xbutton.type == ButtonRelease ? 'm' : 'M');
385 } else if (x < 223 && y < 223) {
386 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
387 32+button, 32+x+1, 32+y+1);
388 } else {
389 return;
390 }
391
392 ttywrite(buf, len, 0);
393 }
394
395 void
396 bpress(XEvent *e)
397 {
398 struct timespec now;
399 MouseShortcut *ms;
400 int snap;
401
402 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
403 mousereport(e);
404 return;
405 }
406
407 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
408 if (e->xbutton.button == ms->b
409 && match(ms->mask, e->xbutton.state)) {
410 ttywrite(ms->s, strlen(ms->s), 1);
411 return;
412 }
413 }
414
415 if (e->xbutton.button == Button1) {
416 /*
417 * If the user clicks below predefined timeouts specific
418 * snapping behaviour is exposed.
419 */
420 clock_gettime(CLOCK_MONOTONIC, &now);
421 if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
422 snap = SNAP_LINE;
423 } else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
424 snap = SNAP_WORD;
425 } else {
426 snap = 0;
427 }
428 xsel.tclick2 = xsel.tclick1;
429 xsel.tclick1 = now;
430
431 selstart(x2col(e->xbutton.x), y2row(e->xbutton.y), snap);
432 }
433 }
434
435 void
436 propnotify(XEvent *e)
437 {
438 XPropertyEvent *xpev;
439 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
440
441 xpev = &e->xproperty;
442 if (xpev->state == PropertyNewValue &&
443 (xpev->atom == XA_PRIMARY ||
444 xpev->atom == clipboard)) {
445 selnotify(e);
446 }
447 }
448
449 void
450 selnotify(XEvent *e)
451 {
452 ulong nitems, ofs, rem;
453 int format;
454 uchar *data, *last, *repl;
455 Atom type, incratom, property;
456
457 incratom = XInternAtom(xw.dpy, "INCR", 0);
458
459 ofs = 0;
460 if (e->type == SelectionNotify) {
461 property = e->xselection.property;
462 } else if(e->type == PropertyNotify) {
463 property = e->xproperty.atom;
464 } else {
465 return;
466 }
467 if (property == None)
468 return;
469
470 do {
471 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
472 BUFSIZ/4, False, AnyPropertyType,
473 &type, &format, &nitems, &rem,
474 &data)) {
475 fprintf(stderr, "Clipboard allocation failed\n");
476 return;
477 }
478
479 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
480 /*
481 * If there is some PropertyNotify with no data, then
482 * this is the signal of the selection owner that all
483 * data has been transferred. We won't need to receive
484 * PropertyNotify events anymore.
485 */
486 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
487 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
488 &xw.attrs);
489 }
490
491 if (type == incratom) {
492 /*
493 * Activate the PropertyNotify events so we receive
494 * when the selection owner does send us the next
495 * chunk of data.
496 */
497 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
498 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
499 &xw.attrs);
500
501 /*
502 * Deleting the property is the transfer start signal.
503 */
504 XDeleteProperty(xw.dpy, xw.win, (int)property);
505 continue;
506 }
507
508 /*
509 * As seen in getsel:
510 * Line endings are inconsistent in the terminal and GUI world
511 * copy and pasting. When receiving some selection data,
512 * replace all '\n' with '\r'.
513 * FIXME: Fix the computer world.
514 */
515 repl = data;
516 last = data + nitems * format / 8;
517 while ((repl = memchr(repl, '\n', last - repl))) {
518 *repl++ = '\r';
519 }
520
521 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
522 ttywrite("\033[200~", 6, 0);
523 ttywrite((char *)data, nitems * format / 8, 1);
524 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
525 ttywrite("\033[201~", 6, 0);
526 XFree(data);
527 /* number of 32-bit chunks returned */
528 ofs += nitems * format / 32;
529 } while (rem > 0);
530
531 /*
532 * Deleting the property again tells the selection owner to send the
533 * next data chunk in the property.
534 */
535 XDeleteProperty(xw.dpy, xw.win, (int)property);
536 }
537
538 void
539 xclipcopy(void)
540 {
541 clipcopy(NULL);
542 }
543
544 void
545 selclear_(XEvent *e)
546 {
547 selclear();
548 }
549
550 void
551 selrequest(XEvent *e)
552 {
553 XSelectionRequestEvent *xsre;
554 XSelectionEvent xev;
555 Atom xa_targets, string, clipboard;
556 char *seltext;
557
558 xsre = (XSelectionRequestEvent *) e;
559 xev.type = SelectionNotify;
560 xev.requestor = xsre->requestor;
561 xev.selection = xsre->selection;
562 xev.target = xsre->target;
563 xev.time = xsre->time;
564 if (xsre->property == None)
565 xsre->property = xsre->target;
566
567 /* reject */
568 xev.property = None;
569
570 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
571 if (xsre->target == xa_targets) {
572 /* respond with the supported type */
573 string = xsel.xtarget;
574 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
575 XA_ATOM, 32, PropModeReplace,
576 (uchar *) &string, 1);
577 xev.property = xsre->property;
578 } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
579 /*
580 * xith XA_STRING non ascii characters may be incorrect in the
581 * requestor. It is not our problem, use utf8.
582 */
583 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
584 if (xsre->selection == XA_PRIMARY) {
585 seltext = xsel.primary;
586 } else if (xsre->selection == clipboard) {
587 seltext = xsel.clipboard;
588 } else {
589 fprintf(stderr,
590 "Unhandled clipboard selection 0x%lx\n",
591 xsre->selection);
592 return;
593 }
594 if (seltext != NULL) {
595 XChangeProperty(xsre->display, xsre->requestor,
596 xsre->property, xsre->target,
597 8, PropModeReplace,
598 (uchar *)seltext, strlen(seltext));
599 xev.property = xsre->property;
600 }
601 }
602
603 /* all done, send a notification to the listener */
604 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
605 fprintf(stderr, "Error sending SelectionNotify event\n");
606 }
607
608 void
609 setsel(char *str, Time t)
610 {
611 free(xsel.primary);
612 xsel.primary = str;
613
614 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
615 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
616 selclear_(NULL);
617 }
618
619 void
620 xsetsel(char *str)
621 {
622 setsel(str, CurrentTime);
623 }
624
625 void
626 brelease(XEvent *e)
627 {
628 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
629 mousereport(e);
630 return;
631 }
632
633 if (e->xbutton.button == Button2)
634 selpaste(NULL);
635 else if (e->xbutton.button == Button1)
636 mousesel(e, 1);
637 }
638
639 void
640 bmotion(XEvent *e)
641 {
642 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
643 mousereport(e);
644 return;
645 }
646
647 mousesel(e, 0);
648 }
649
650 void
651 cresize(int width, int height)
652 {
653 int col, row;
654
655 if (width != 0)
656 win.w = width;
657 if (height != 0)
658 win.h = height;
659
660 col = (win.w - 2 * borderpx) / win.cw;
661 row = (win.h - 2 * borderpx) / win.ch;
662
663 tresize(col, row);
664 xresize(col, row);
665 ttyresize(win.tw, win.th);
666 }
667
668 void
669 xresize(int col, int row)
670 {
671 win.tw = MAX(1, col * win.cw);
672 win.th = MAX(1, row * win.ch);
673
674 XFreePixmap(xw.dpy, xw.buf);
675 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
676 DefaultDepth(xw.dpy, xw.scr));
677 XftDrawChange(xw.draw, xw.buf);
678 xclear(0, 0, win.w, win.h);
679
680 /* resize to new width */
681 xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
682 }
683
684 ushort
685 sixd_to_16bit(int x)
686 {
687 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
688 }
689
690 int
691 xloadcolor(int i, const char *name, Color *ncolor)
692 {
693 XRenderColor color = { .alpha = 0xffff };
694
695 if (!name) {
696 if (BETWEEN(i, 16, 255)) { /* 256 color */
697 if (i < 6*6*6+16) { /* same colors as xterm */
698 color.red = sixd_to_16bit( ((i-16)/36)%6 );
699 color.green = sixd_to_16bit( ((i-16)/6) %6 );
700 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
701 } else { /* greyscale */
702 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
703 color.green = color.blue = color.red;
704 }
705 return XftColorAllocValue(xw.dpy, xw.vis,
706 xw.cmap, &color, ncolor);
707 } else
708 name = colorname[i];
709 }
710
711 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
712 }
713
714 void
715 xloadcols(void)
716 {
717 int i;
718 static int loaded;
719 Color *cp;
720
721 dc.collen = MAX(LEN(colorname), 256);
722 dc.col = xmalloc(dc.collen * sizeof(Color));
723
724 if (loaded) {
725 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
726 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
727 }
728
729 for (i = 0; i < dc.collen; i++)
730 if (!xloadcolor(i, NULL, &dc.col[i])) {
731 if (colorname[i])
732 die("Could not allocate color '%s'\n", colorname[i]);
733 else
734 die("Could not allocate color %d\n", i);
735 }
736 loaded = 1;
737 }
738
739 int
740 xsetcolorname(int x, const char *name)
741 {
742 Color ncolor;
743
744 if (!BETWEEN(x, 0, dc.collen))
745 return 1;
746
747
748 if (!xloadcolor(x, name, &ncolor))
749 return 1;
750
751 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
752 dc.col[x] = ncolor;
753
754 return 0;
755 }
756
757 /*
758 * Absolute coordinates.
759 */
760 void
761 xclear(int x1, int y1, int x2, int y2)
762 {
763 XftDrawRect(xw.draw,
764 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
765 x1, y1, x2-x1, y2-y1);
766 }
767
768 void
769 xhints(void)
770 {
771 XClassHint class = {opt_name ? opt_name : termname,
772 opt_class ? opt_class : termname};
773 XWMHints wm = {.flags = InputHint, .input = 1};
774 XSizeHints *sizeh = NULL;
775
776 sizeh = XAllocSizeHints();
777
778 sizeh->flags = PSize | PResizeInc | PBaseSize;
779 sizeh->height = win.h;
780 sizeh->width = win.w;
781 sizeh->height_inc = win.ch;
782 sizeh->width_inc = win.cw;
783 sizeh->base_height = 2 * borderpx;
784 sizeh->base_width = 2 * borderpx;
785 if (xw.isfixed) {
786 sizeh->flags |= PMaxSize | PMinSize;
787 sizeh->min_width = sizeh->max_width = win.w;
788 sizeh->min_height = sizeh->max_height = win.h;
789 }
790 if (xw.gm & (XValue|YValue)) {
791 sizeh->flags |= USPosition | PWinGravity;
792 sizeh->x = xw.l;
793 sizeh->y = xw.t;
794 sizeh->win_gravity = xgeommasktogravity(xw.gm);
795 }
796
797 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
798 &class);
799 XFree(sizeh);
800 }
801
802 int
803 xgeommasktogravity(int mask)
804 {
805 switch (mask & (XNegative|YNegative)) {
806 case 0:
807 return NorthWestGravity;
808 case XNegative:
809 return NorthEastGravity;
810 case YNegative:
811 return SouthWestGravity;
812 }
813
814 return SouthEastGravity;
815 }
816
817 int
818 xloadfont(Font *f, FcPattern *pattern)
819 {
820 FcPattern *configured;
821 FcPattern *match;
822 FcResult result;
823 XGlyphInfo extents;
824 int wantattr, haveattr;
825
826 /*
827 * Manually configure instead of calling XftMatchFont
828 * so that we can use the configured pattern for
829 * "missing glyph" lookups.
830 */
831 configured = FcPatternDuplicate(pattern);
832 if (!configured)
833 return 1;
834
835 FcConfigSubstitute(NULL, configured, FcMatchPattern);
836 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
837
838 match = FcFontMatch(NULL, configured, &result);
839 if (!match) {
840 FcPatternDestroy(configured);
841 return 1;
842 }
843
844 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
845 FcPatternDestroy(configured);
846 FcPatternDestroy(match);
847 return 1;
848 }
849
850 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
851 XftResultMatch)) {
852 /*
853 * Check if xft was unable to find a font with the appropriate
854 * slant but gave us one anyway. Try to mitigate.
855 */
856 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
857 &haveattr) != XftResultMatch) || haveattr < wantattr) {
858 f->badslant = 1;
859 fputs("st: font slant does not match\n", stderr);
860 }
861 }
862
863 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
864 XftResultMatch)) {
865 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
866 &haveattr) != XftResultMatch) || haveattr != wantattr) {
867 f->badweight = 1;
868 fputs("st: font weight does not match\n", stderr);
869 }
870 }
871
872 XftTextExtentsUtf8(xw.dpy, f->match,
873 (const FcChar8 *) ascii_printable,
874 strlen(ascii_printable), &extents);
875
876 f->set = NULL;
877 f->pattern = configured;
878
879 f->ascent = f->match->ascent;
880 f->descent = f->match->descent;
881 f->lbearing = 0;
882 f->rbearing = f->match->max_advance_width;
883
884 f->height = f->ascent + f->descent;
885 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
886
887 return 0;
888 }
889
890 void
891 xloadfonts(char *fontstr, double fontsize)
892 {
893 FcPattern *pattern;
894 double fontval;
895 float ceilf(float);
896
897 if (fontstr[0] == '-') {
898 pattern = XftXlfdParse(fontstr, False, False);
899 } else {
900 pattern = FcNameParse((FcChar8 *)fontstr);
901 }
902
903 if (!pattern)
904 die("st: can't open font %s\n", fontstr);
905
906 if (fontsize > 1) {
907 FcPatternDel(pattern, FC_PIXEL_SIZE);
908 FcPatternDel(pattern, FC_SIZE);
909 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
910 usedfontsize = fontsize;
911 } else {
912 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
913 FcResultMatch) {
914 usedfontsize = fontval;
915 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
916 FcResultMatch) {
917 usedfontsize = -1;
918 } else {
919 /*
920 * Default font size is 12, if none given. This is to
921 * have a known usedfontsize value.
922 */
923 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
924 usedfontsize = 12;
925 }
926 defaultfontsize = usedfontsize;
927 }
928
929 if (xloadfont(&dc.font, pattern))
930 die("st: can't open font %s\n", fontstr);
931
932 if (usedfontsize < 0) {
933 FcPatternGetDouble(dc.font.match->pattern,
934 FC_PIXEL_SIZE, 0, &fontval);
935 usedfontsize = fontval;
936 if (fontsize == 0)
937 defaultfontsize = fontval;
938 }
939
940 /* Setting character width and height. */
941 win.cw = ceilf(dc.font.width * cwscale);
942 win.ch = ceilf(dc.font.height * chscale);
943
944 FcPatternDel(pattern, FC_SLANT);
945 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
946 if (xloadfont(&dc.ifont, pattern))
947 die("st: can't open font %s\n", fontstr);
948
949 FcPatternDel(pattern, FC_WEIGHT);
950 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
951 if (xloadfont(&dc.ibfont, pattern))
952 die("st: can't open font %s\n", fontstr);
953
954 FcPatternDel(pattern, FC_SLANT);
955 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
956 if (xloadfont(&dc.bfont, pattern))
957 die("st: can't open font %s\n", fontstr);
958
959 FcPatternDestroy(pattern);
960 }
961
962 void
963 xunloadfont(Font *f)
964 {
965 XftFontClose(xw.dpy, f->match);
966 FcPatternDestroy(f->pattern);
967 if (f->set)
968 FcFontSetDestroy(f->set);
969 }
970
971 void
972 xunloadfonts(void)
973 {
974 /* Free the loaded fonts in the font cache. */
975 while (frclen > 0)
976 XftFontClose(xw.dpy, frc[--frclen].font);
977
978 xunloadfont(&dc.font);
979 xunloadfont(&dc.bfont);
980 xunloadfont(&dc.ifont);
981 xunloadfont(&dc.ibfont);
982 }
983
984 void
985 xinit(int cols, int rows)
986 {
987 XGCValues gcvalues;
988 Cursor cursor;
989 Window parent;
990 pid_t thispid = getpid();
991 XColor xmousefg, xmousebg;
992
993 if (!(xw.dpy = XOpenDisplay(NULL)))
994 die("Can't open display\n");
995 xw.scr = XDefaultScreen(xw.dpy);
996 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
997
998 /* font */
999 if (!FcInit())
1000 die("Could not init fontconfig.\n");
1001
1002 usedfont = (opt_font == NULL)? font : opt_font;
1003 xloadfonts(usedfont, 0);
1004
1005 /* colors */
1006 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1007 xloadcols();
1008
1009 /* adjust fixed window geometry */
1010 win.w = 2 * borderpx + cols * win.cw;
1011 win.h = 2 * borderpx + rows * win.ch;
1012 if (xw.gm & XNegative)
1013 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
1014 if (xw.gm & YNegative)
1015 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
1016
1017 /* Events */
1018 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
1019 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
1020 xw.attrs.bit_gravity = NorthWestGravity;
1021 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
1022 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1023 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
1024 xw.attrs.colormap = xw.cmap;
1025
1026 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
1027 parent = XRootWindow(xw.dpy, xw.scr);
1028 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
1029 win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1030 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
1031 | CWEventMask | CWColormap, &xw.attrs);
1032
1033 memset(&gcvalues, 0, sizeof(gcvalues));
1034 gcvalues.graphics_exposures = False;
1035 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
1036 &gcvalues);
1037 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
1038 DefaultDepth(xw.dpy, xw.scr));
1039 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
1040 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
1041
1042 /* font spec buffer */
1043 xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
1044
1045 /* Xft rendering context */
1046 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
1047
1048 /* input methods */
1049 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1050 XSetLocaleModifiers("@im=local");
1051 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1052 XSetLocaleModifiers("@im=");
1053 if ((xw.xim = XOpenIM(xw.dpy,
1054 NULL, NULL, NULL)) == NULL) {
1055 die("XOpenIM failed. Could not open input"
1056 " device.\n");
1057 }
1058 }
1059 }
1060 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
1061 | XIMStatusNothing, XNClientWindow, xw.win,
1062 XNFocusWindow, xw.win, NULL);
1063 if (xw.xic == NULL)
1064 die("XCreateIC failed. Could not obtain input method.\n");
1065
1066 /* white cursor, black outline */
1067 cursor = XCreateFontCursor(xw.dpy, mouseshape);
1068 XDefineCursor(xw.dpy, xw.win, cursor);
1069
1070 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
1071 xmousefg.red = 0xffff;
1072 xmousefg.green = 0xffff;
1073 xmousefg.blue = 0xffff;
1074 }
1075
1076 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
1077 xmousebg.red = 0x0000;
1078 xmousebg.green = 0x0000;
1079 xmousebg.blue = 0x0000;
1080 }
1081
1082 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
1083
1084 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1085 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
1086 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
1087 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
1088
1089 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
1090 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
1091 PropModeReplace, (uchar *)&thispid, 1);
1092
1093 win.mode = MODE_NUMLOCK;
1094 resettitle();
1095 XMapWindow(xw.dpy, xw.win);
1096 xhints();
1097 XSync(xw.dpy, False);
1098
1099 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
1100 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
1101 xsel.primary = NULL;
1102 xsel.clipboard = NULL;
1103 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
1104 if (xsel.xtarget == None)
1105 xsel.xtarget = XA_STRING;
1106 }
1107
1108 int
1109 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
1110 {
1111 float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
1112 ushort mode, prevmode = USHRT_MAX;
1113 Font *font = &dc.font;
1114 int frcflags = FRC_NORMAL;
1115 float runewidth = win.cw;
1116 Rune rune;
1117 FT_UInt glyphidx;
1118 FcResult fcres;
1119 FcPattern *fcpattern, *fontpattern;
1120 FcFontSet *fcsets[] = { NULL };
1121 FcCharSet *fccharset;
1122 int i, f, numspecs = 0;
1123
1124 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1125 /* Fetch rune and mode for current glyph. */
1126 rune = glyphs[i].u;
1127 mode = glyphs[i].mode;
1128
1129 /* Skip dummy wide-character spacing. */
1130 if (mode == ATTR_WDUMMY)
1131 continue;
1132
1133 /* Determine font for glyph if different from previous glyph. */
1134 if (prevmode != mode) {
1135 prevmode = mode;
1136 font = &dc.font;
1137 frcflags = FRC_NORMAL;
1138 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1139 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1140 font = &dc.ibfont;
1141 frcflags = FRC_ITALICBOLD;
1142 } else if (mode & ATTR_ITALIC) {
1143 font = &dc.ifont;
1144 frcflags = FRC_ITALIC;
1145 } else if (mode & ATTR_BOLD) {
1146 font = &dc.bfont;
1147 frcflags = FRC_BOLD;
1148 }
1149 yp = winy + font->ascent;
1150 }
1151
1152 /* Lookup character index with default font. */
1153 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1154 if (glyphidx) {
1155 specs[numspecs].font = font->match;
1156 specs[numspecs].glyph = glyphidx;
1157 specs[numspecs].x = (short)xp;
1158 specs[numspecs].y = (short)yp;
1159 xp += runewidth;
1160 numspecs++;
1161 continue;
1162 }
1163
1164 /* Fallback on font cache, search the font cache for match. */
1165 for (f = 0; f < frclen; f++) {
1166 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1167 /* Everything correct. */
1168 if (glyphidx && frc[f].flags == frcflags)
1169 break;
1170 /* We got a default font for a not found glyph. */
1171 if (!glyphidx && frc[f].flags == frcflags
1172 && frc[f].unicodep == rune) {
1173 break;
1174 }
1175 }
1176
1177 /* Nothing was found. Use fontconfig to find matching font. */
1178 if (f >= frclen) {
1179 if (!font->set)
1180 font->set = FcFontSort(0, font->pattern,
1181 1, 0, &fcres);
1182 fcsets[0] = font->set;
1183
1184 /*
1185 * Nothing was found in the cache. Now use
1186 * some dozen of Fontconfig calls to get the
1187 * font for one single character.
1188 *
1189 * Xft and fontconfig are design failures.
1190 */
1191 fcpattern = FcPatternDuplicate(font->pattern);
1192 fccharset = FcCharSetCreate();
1193
1194 FcCharSetAddChar(fccharset, rune);
1195 FcPatternAddCharSet(fcpattern, FC_CHARSET,
1196 fccharset);
1197 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1198
1199 FcConfigSubstitute(0, fcpattern,
1200 FcMatchPattern);
1201 FcDefaultSubstitute(fcpattern);
1202
1203 fontpattern = FcFontSetMatch(0, fcsets, 1,
1204 fcpattern, &fcres);
1205
1206 /*
1207 * Overwrite or create the new cache entry.
1208 */
1209 if (frclen >= LEN(frc)) {
1210 frclen = LEN(frc) - 1;
1211 XftFontClose(xw.dpy, frc[frclen].font);
1212 frc[frclen].unicodep = 0;
1213 }
1214
1215 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1216 fontpattern);
1217 if (!frc[frclen].font)
1218 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1219 strerror(errno));
1220 frc[frclen].flags = frcflags;
1221 frc[frclen].unicodep = rune;
1222
1223 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1224
1225 f = frclen;
1226 frclen++;
1227
1228 FcPatternDestroy(fcpattern);
1229 FcCharSetDestroy(fccharset);
1230 }
1231
1232 specs[numspecs].font = frc[f].font;
1233 specs[numspecs].glyph = glyphidx;
1234 specs[numspecs].x = (short)xp;
1235 specs[numspecs].y = (short)yp;
1236 xp += runewidth;
1237 numspecs++;
1238 }
1239
1240 return numspecs;
1241 }
1242
1243 void
1244 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1245 {
1246 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1247 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1248 width = charlen * win.cw;
1249 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1250 XRenderColor colfg, colbg;
1251 XRectangle r;
1252
1253 /* Fallback on color display for attributes not supported by the font */
1254 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1255 if (dc.ibfont.badslant || dc.ibfont.badweight)
1256 base.fg = defaultattr;
1257 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1258 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1259 base.fg = defaultattr;
1260 }
1261
1262 if (IS_TRUECOL(base.fg)) {
1263 colfg.alpha = 0xffff;
1264 colfg.red = TRUERED(base.fg);
1265 colfg.green = TRUEGREEN(base.fg);
1266 colfg.blue = TRUEBLUE(base.fg);
1267 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1268 fg = &truefg;
1269 } else {
1270 fg = &dc.col[base.fg];
1271 }
1272
1273 if (IS_TRUECOL(base.bg)) {
1274 colbg.alpha = 0xffff;
1275 colbg.green = TRUEGREEN(base.bg);
1276 colbg.red = TRUERED(base.bg);
1277 colbg.blue = TRUEBLUE(base.bg);
1278 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1279 bg = &truebg;
1280 } else {
1281 bg = &dc.col[base.bg];
1282 }
1283
1284 /* Change basic system colors [0-7] to bright system colors [8-15] */
1285 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1286 fg = &dc.col[base.fg + 8];
1287
1288 if (IS_SET(MODE_REVERSE)) {
1289 if (fg == &dc.col[defaultfg]) {
1290 fg = &dc.col[defaultbg];
1291 } else {
1292 colfg.red = ~fg->color.red;
1293 colfg.green = ~fg->color.green;
1294 colfg.blue = ~fg->color.blue;
1295 colfg.alpha = fg->color.alpha;
1296 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1297 &revfg);
1298 fg = &revfg;
1299 }
1300
1301 if (bg == &dc.col[defaultbg]) {
1302 bg = &dc.col[defaultfg];
1303 } else {
1304 colbg.red = ~bg->color.red;
1305 colbg.green = ~bg->color.green;
1306 colbg.blue = ~bg->color.blue;
1307 colbg.alpha = bg->color.alpha;
1308 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1309 &revbg);
1310 bg = &revbg;
1311 }
1312 }
1313
1314 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1315 colfg.red = fg->color.red / 2;
1316 colfg.green = fg->color.green / 2;
1317 colfg.blue = fg->color.blue / 2;
1318 colfg.alpha = fg->color.alpha;
1319 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1320 fg = &revfg;
1321 }
1322
1323 if (base.mode & ATTR_REVERSE) {
1324 temp = fg;
1325 fg = bg;
1326 bg = temp;
1327 }
1328
1329 if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
1330 fg = bg;
1331
1332 if (base.mode & ATTR_INVISIBLE)
1333 fg = bg;
1334
1335 /* Intelligent cleaning up of the borders. */
1336 if (x == 0) {
1337 xclear(0, (y == 0)? 0 : winy, borderpx,
1338 winy + win.ch +
1339 ((winy + win.ch >= borderpx + win.th)? win.h : 0));
1340 }
1341 if (winx + width >= borderpx + win.tw) {
1342 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1343 ((winy + win.ch >= borderpx + win.th)? win.h : (winy + win.ch)));
1344 }
1345 if (y == 0)
1346 xclear(winx, 0, winx + width, borderpx);
1347 if (winy + win.ch >= borderpx + win.th)
1348 xclear(winx, winy + win.ch, winx + width, win.h);
1349
1350 /* Clean up the region we want to draw to. */
1351 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1352
1353 /* Set the clip region because Xft is sometimes dirty. */
1354 r.x = 0;
1355 r.y = 0;
1356 r.height = win.ch;
1357 r.width = width;
1358 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1359
1360 /* Render the glyphs. */
1361 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1362
1363 /* Render underline and strikethrough. */
1364 if (base.mode & ATTR_UNDERLINE) {
1365 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
1366 width, 1);
1367 }
1368
1369 if (base.mode & ATTR_STRUCK) {
1370 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
1371 width, 1);
1372 }
1373
1374 /* Reset clip to none. */
1375 XftDrawSetClip(xw.draw, 0);
1376 }
1377
1378 void
1379 xdrawglyph(Glyph g, int x, int y)
1380 {
1381 int numspecs;
1382 XftGlyphFontSpec spec;
1383
1384 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1385 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1386 }
1387
1388 void
1389 xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
1390 {
1391 Color drawcol;
1392
1393 /* remove the old cursor */
1394 if (selected(ox, oy))
1395 og.mode ^= ATTR_REVERSE;
1396 xdrawglyph(og, ox, oy);
1397
1398 /*
1399 * Select the right color for the right mode.
1400 */
1401 g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
1402 g.fg = defaultbg;
1403 g.bg = defaultcs;
1404
1405 if (IS_SET(MODE_REVERSE)) {
1406 g.mode |= ATTR_REVERSE;
1407 g.bg = defaultfg;
1408 if (selected(cx, cy)) {
1409 drawcol = dc.col[defaultcs];
1410 g.fg = defaultrcs;
1411 } else {
1412 drawcol = dc.col[defaultrcs];
1413 g.fg = defaultcs;
1414 }
1415 } else {
1416 if (selected(cx, cy)) {
1417 drawcol = dc.col[defaultrcs];
1418 g.fg = defaultfg;
1419 g.bg = defaultrcs;
1420 } else {
1421 drawcol = dc.col[defaultcs];
1422 }
1423 }
1424
1425 if (IS_SET(MODE_HIDE))
1426 return;
1427
1428 /* draw the new one */
1429 if (IS_SET(MODE_FOCUSED)) {
1430 switch (win.cursor) {
1431 case 7: /* st extension: snowman */
1432 utf8decode("☃", &g.u, UTF_SIZ);
1433 case 0: /* Blinking Block */
1434 case 1: /* Blinking Block (Default) */
1435 case 2: /* Steady Block */
1436 xdrawglyph(g, cx, cy);
1437 break;
1438 case 3: /* Blinking Underline */
1439 case 4: /* Steady Underline */
1440 XftDrawRect(xw.draw, &drawcol,
1441 borderpx + cx * win.cw,
1442 borderpx + (cy + 1) * win.ch - \
1443 cursorthickness,
1444 win.cw, cursorthickness);
1445 break;
1446 case 5: /* Blinking bar */
1447 case 6: /* Steady bar */
1448 XftDrawRect(xw.draw, &drawcol,
1449 borderpx + cx * win.cw,
1450 borderpx + cy * win.ch,
1451 cursorthickness, win.ch);
1452 break;
1453 }
1454 } else {
1455 XftDrawRect(xw.draw, &drawcol,
1456 borderpx + cx * win.cw,
1457 borderpx + cy * win.ch,
1458 win.cw - 1, 1);
1459 XftDrawRect(xw.draw, &drawcol,
1460 borderpx + cx * win.cw,
1461 borderpx + cy * win.ch,
1462 1, win.ch - 1);
1463 XftDrawRect(xw.draw, &drawcol,
1464 borderpx + (cx + 1) * win.cw - 1,
1465 borderpx + cy * win.ch,
1466 1, win.ch - 1);
1467 XftDrawRect(xw.draw, &drawcol,
1468 borderpx + cx * win.cw,
1469 borderpx + (cy + 1) * win.ch - 1,
1470 win.cw, 1);
1471 }
1472 }
1473
1474 void
1475 xsetenv(void)
1476 {
1477 char buf[sizeof(long) * 8 + 1];
1478
1479 snprintf(buf, sizeof(buf), "%lu", xw.win);
1480 setenv("WINDOWID", buf, 1);
1481 }
1482
1483 void
1484 xsettitle(char *p)
1485 {
1486 XTextProperty prop;
1487 DEFAULT(p, "st");
1488
1489 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1490 &prop);
1491 XSetWMName(xw.dpy, xw.win, &prop);
1492 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1493 XFree(prop.value);
1494 }
1495
1496 int
1497 xstartdraw(void)
1498 {
1499 return IS_SET(MODE_VISIBLE);
1500 }
1501
1502 void
1503 xdrawline(Line line, int x1, int y1, int x2)
1504 {
1505 int i, x, ox, numspecs;
1506 Glyph base, new;
1507 XftGlyphFontSpec *specs = xw.specbuf;
1508
1509 numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
1510 i = ox = 0;
1511 for (x = x1; x < x2 && i < numspecs; x++) {
1512 new = line[x];
1513 if (new.mode == ATTR_WDUMMY)
1514 continue;
1515 if (selected(x, y1))
1516 new.mode ^= ATTR_REVERSE;
1517 if (i > 0 && ATTRCMP(base, new)) {
1518 xdrawglyphfontspecs(specs, base, i, ox, y1);
1519 specs += i;
1520 numspecs -= i;
1521 i = 0;
1522 }
1523 if (i == 0) {
1524 ox = x;
1525 base = new;
1526 }
1527 i++;
1528 }
1529 if (i > 0)
1530 xdrawglyphfontspecs(specs, base, i, ox, y1);
1531 }
1532
1533 void
1534 xfinishdraw(void)
1535 {
1536 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1537 win.h, 0, 0);
1538 XSetForeground(xw.dpy, dc.gc,
1539 dc.col[IS_SET(MODE_REVERSE)?
1540 defaultfg : defaultbg].pixel);
1541 }
1542
1543 void
1544 expose(XEvent *ev)
1545 {
1546 redraw();
1547 }
1548
1549 void
1550 visibility(XEvent *ev)
1551 {
1552 XVisibilityEvent *e = &ev->xvisibility;
1553
1554 MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
1555 }
1556
1557 void
1558 unmap(XEvent *ev)
1559 {
1560 win.mode &= ~MODE_VISIBLE;
1561 }
1562
1563 void
1564 xsetpointermotion(int set)
1565 {
1566 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1567 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1568 }
1569
1570 void
1571 xsetmode(int set, unsigned int flags)
1572 {
1573 int mode = win.mode;
1574 MODBIT(win.mode, set, flags);
1575 if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
1576 redraw();
1577 }
1578
1579 int
1580 xsetcursor(int cursor)
1581 {
1582 DEFAULT(cursor, 1);
1583 if (!BETWEEN(cursor, 0, 6))
1584 return 1;
1585 win.cursor = cursor;
1586 return 0;
1587 }
1588
1589 void
1590 xseturgency(int add)
1591 {
1592 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1593
1594 MODBIT(h->flags, add, XUrgencyHint);
1595 XSetWMHints(xw.dpy, xw.win, h);
1596 XFree(h);
1597 }
1598
1599 void
1600 xbell(void)
1601 {
1602 if (!(IS_SET(MODE_FOCUSED)))
1603 xseturgency(1);
1604 if (bellvolume)
1605 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1606 }
1607
1608 void
1609 focus(XEvent *ev)
1610 {
1611 XFocusChangeEvent *e = &ev->xfocus;
1612
1613 if (e->mode == NotifyGrab)
1614 return;
1615
1616 if (ev->type == FocusIn) {
1617 XSetICFocus(xw.xic);
1618 win.mode |= MODE_FOCUSED;
1619 xseturgency(0);
1620 if (IS_SET(MODE_FOCUS))
1621 ttywrite("\033[I", 3, 0);
1622 } else {
1623 XUnsetICFocus(xw.xic);
1624 win.mode &= ~MODE_FOCUSED;
1625 if (IS_SET(MODE_FOCUS))
1626 ttywrite("\033[O", 3, 0);
1627 }
1628 }
1629
1630 int
1631 match(uint mask, uint state)
1632 {
1633 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1634 }
1635
1636 char*
1637 kmap(KeySym k, uint state)
1638 {
1639 Key *kp;
1640 int i;
1641
1642 /* Check for mapped keys out of X11 function keys. */
1643 for (i = 0; i < LEN(mappedkeys); i++) {
1644 if (mappedkeys[i] == k)
1645 break;
1646 }
1647 if (i == LEN(mappedkeys)) {
1648 if ((k & 0xFFFF) < 0xFD00)
1649 return NULL;
1650 }
1651
1652 for (kp = key; kp < key + LEN(key); kp++) {
1653 if (kp->k != k)
1654 continue;
1655
1656 if (!match(kp->mask, state))
1657 continue;
1658
1659 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1660 continue;
1661 if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
1662 continue;
1663
1664 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1665 continue;
1666
1667 return kp->s;
1668 }
1669
1670 return NULL;
1671 }
1672
1673 void
1674 kpress(XEvent *ev)
1675 {
1676 XKeyEvent *e = &ev->xkey;
1677 KeySym ksym;
1678 char buf[32], *customkey;
1679 int len;
1680 Rune c;
1681 Status status;
1682 Shortcut *bp;
1683
1684 if (IS_SET(MODE_KBDLOCK))
1685 return;
1686
1687 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
1688 /* 1. shortcuts */
1689 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
1690 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1691 bp->func(&(bp->arg));
1692 return;
1693 }
1694 }
1695
1696 /* 2. custom keys from config.h */
1697 if ((customkey = kmap(ksym, e->state))) {
1698 ttywrite(customkey, strlen(customkey), 1);
1699 return;
1700 }
1701
1702 /* 3. composed string from input method */
1703 if (len == 0)
1704 return;
1705 if (len == 1 && e->state & Mod1Mask) {
1706 if (IS_SET(MODE_8BIT)) {
1707 if (*buf < 0177) {
1708 c = *buf | 0x80;
1709 len = utf8encode(c, buf);
1710 }
1711 } else {
1712 buf[1] = buf[0];
1713 buf[0] = '\033';
1714 len = 2;
1715 }
1716 }
1717 ttywrite(buf, len, 1);
1718 }
1719
1720
1721 void
1722 cmessage(XEvent *e)
1723 {
1724 /*
1725 * See xembed specs
1726 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1727 */
1728 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1729 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1730 win.mode |= MODE_FOCUSED;
1731 xseturgency(0);
1732 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1733 win.mode &= ~MODE_FOCUSED;
1734 }
1735 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1736 /* Send SIGHUP to shell */
1737 kill(pid, SIGHUP);
1738 exit(0);
1739 }
1740 }
1741
1742 void
1743 resize(XEvent *e)
1744 {
1745 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1746 return;
1747
1748 cresize(e->xconfigure.width, e->xconfigure.height);
1749 }
1750
1751 void
1752 run(void)
1753 {
1754 XEvent ev;
1755 int w = win.w, h = win.h;
1756 fd_set rfd;
1757 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
1758 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
1759 long deltatime;
1760
1761 /* Waiting for window mapping */
1762 do {
1763 XNextEvent(xw.dpy, &ev);
1764 /*
1765 * This XFilterEvent call is required because of XOpenIM. It
1766 * does filter out the key event and some client message for
1767 * the input method too.
1768 */
1769 if (XFilterEvent(&ev, None))
1770 continue;
1771 if (ev.type == ConfigureNotify) {
1772 w = ev.xconfigure.width;
1773 h = ev.xconfigure.height;
1774 }
1775 } while (ev.type != MapNotify);
1776
1777 ttynew(opt_line, opt_io, opt_cmd);
1778 cresize(w, h);
1779
1780 clock_gettime(CLOCK_MONOTONIC, &last);
1781 lastblink = last;
1782
1783 for (xev = actionfps;;) {
1784 FD_ZERO(&rfd);
1785 FD_SET(cmdfd, &rfd);
1786 FD_SET(xfd, &rfd);
1787
1788 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1789 if (errno == EINTR)
1790 continue;
1791 die("select failed: %s\n", strerror(errno));
1792 }
1793 if (FD_ISSET(cmdfd, &rfd)) {
1794 ttyread();
1795 if (blinktimeout) {
1796 blinkset = tattrset(ATTR_BLINK);
1797 if (!blinkset)
1798 MODBIT(win.mode, 0, MODE_BLINK);
1799 }
1800 }
1801
1802 if (FD_ISSET(xfd, &rfd))
1803 xev = actionfps;
1804
1805 clock_gettime(CLOCK_MONOTONIC, &now);
1806 drawtimeout.tv_sec = 0;
1807 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
1808 tv = &drawtimeout;
1809
1810 dodraw = 0;
1811 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
1812 tsetdirtattr(ATTR_BLINK);
1813 win.mode ^= MODE_BLINK;
1814 lastblink = now;
1815 dodraw = 1;
1816 }
1817 deltatime = TIMEDIFF(now, last);
1818 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
1819 dodraw = 1;
1820 last = now;
1821 }
1822
1823 if (dodraw) {
1824 while (XPending(xw.dpy)) {
1825 XNextEvent(xw.dpy, &ev);
1826 if (XFilterEvent(&ev, None))
1827 continue;
1828 if (handler[ev.type])
1829 (handler[ev.type])(&ev);
1830 }
1831
1832 draw();
1833 XFlush(xw.dpy);
1834
1835 if (xev && !FD_ISSET(xfd, &rfd))
1836 xev--;
1837 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
1838 if (blinkset) {
1839 if (TIMEDIFF(now, lastblink) \
1840 > blinktimeout) {
1841 drawtimeout.tv_nsec = 1000;
1842 } else {
1843 drawtimeout.tv_nsec = (1E6 * \
1844 (blinktimeout - \
1845 TIMEDIFF(now,
1846 lastblink)));
1847 }
1848 drawtimeout.tv_sec = \
1849 drawtimeout.tv_nsec / 1E9;
1850 drawtimeout.tv_nsec %= (long)1E9;
1851 } else {
1852 tv = NULL;
1853 }
1854 }
1855 }
1856 }
1857 }
1858
1859 void
1860 usage(void)
1861 {
1862 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
1863 " [-n name] [-o file]\n"
1864 " [-T title] [-t title] [-w windowid]"
1865 " [[-e] command [args ...]]\n"
1866 " %s [-aiv] [-c class] [-f font] [-g geometry]"
1867 " [-n name] [-o file]\n"
1868 " [-T title] [-t title] [-w windowid] -l line"
1869 " [stty_args ...]\n", argv0, argv0);
1870 }
1871
1872 int
1873 main(int argc, char *argv[])
1874 {
1875 xw.l = xw.t = 0;
1876 xw.isfixed = False;
1877 win.cursor = cursorshape;
1878
1879 ARGBEGIN {
1880 case 'a':
1881 allowaltscreen = 0;
1882 break;
1883 case 'c':
1884 opt_class = EARGF(usage());
1885 break;
1886 case 'e':
1887 if (argc > 0)
1888 --argc, ++argv;
1889 goto run;
1890 case 'f':
1891 opt_font = EARGF(usage());
1892 break;
1893 case 'g':
1894 xw.gm = XParseGeometry(EARGF(usage()),
1895 &xw.l, &xw.t, &cols, &rows);
1896 break;
1897 case 'i':
1898 xw.isfixed = 1;
1899 break;
1900 case 'o':
1901 opt_io = EARGF(usage());
1902 break;
1903 case 'l':
1904 opt_line = EARGF(usage());
1905 break;
1906 case 'n':
1907 opt_name = EARGF(usage());
1908 break;
1909 case 't':
1910 case 'T':
1911 opt_title = EARGF(usage());
1912 break;
1913 case 'w':
1914 opt_embed = EARGF(usage());
1915 break;
1916 case 'v':
1917 die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
1918 break;
1919 default:
1920 usage();
1921 } ARGEND;
1922
1923 run:
1924 if (argc > 0) {
1925 /* eat all remaining arguments */
1926 opt_cmd = argv;
1927 if (!opt_title && !opt_line)
1928 opt_title = basename(xstrdup(argv[0]));
1929 }
1930 setlocale(LC_CTYPE, "");
1931 XSetLocaleModifiers("");
1932 cols = MAX(cols, 1);
1933 rows = MAX(rows, 1);
1934 tnew(cols, rows);
1935 xinit(cols, rows);
1936 xsetenv();
1937 selinit();
1938 run();
1939
1940 return 0;
1941 }