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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 signed char crlf; /* crlf mode */
45 } Key;
46
47 /* X modifiers */
48 #define XK_ANY_MOD UINT_MAX
49 #define XK_NO_MOD 0
50 #define XK_SWITCH_MOD (1<<13)
51
52 /* function definitions used in config.h */
53 static void clipcopy(const Arg *);
54 static void clippaste(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 TRUERED(x) (((x) & 0xff0000) >> 8)
69 #define TRUEGREEN(x) (((x) & 0xff00))
70 #define TRUEBLUE(x) (((x) & 0xff) << 8)
71
72 typedef XftDraw *Draw;
73 typedef XftColor Color;
74 typedef XftGlyphFontSpec GlyphFontSpec;
75
76 /* Purely graphic info */
77 typedef struct {
78 Display *dpy;
79 Colormap cmap;
80 Window win;
81 Drawable buf;
82 GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
83 Atom xembed, wmdeletewin, netwmname, netwmpid;
84 XIM xim;
85 XIC xic;
86 Draw draw;
87 Visual *vis;
88 XSetWindowAttributes attrs;
89 int scr;
90 int isfixed; /* is fixed geometry? */
91 int l, t; /* left and top offset */
92 int gm; /* geometry mask */
93 } XWindow;
94
95 typedef struct {
96 Atom xtarget;
97 char *primary, *clipboard;
98 struct timespec tclick1;
99 struct timespec tclick2;
100 } XSelection;
101
102 /* Font structure */
103 #define Font Font_
104 typedef struct {
105 int height;
106 int width;
107 int ascent;
108 int descent;
109 int badslant;
110 int badweight;
111 short lbearing;
112 short rbearing;
113 XftFont *match;
114 FcFontSet *set;
115 FcPattern *pattern;
116 } Font;
117
118 /* Drawing Context */
119 typedef struct {
120 Color *col;
121 size_t collen;
122 Font font, bfont, ifont, ibfont;
123 GC gc;
124 } DC;
125
126 static inline ushort sixd_to_16bit(int);
127 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
128 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
129 static void xdrawglyph(Glyph, int, int);
130 static void xclear(int, int, int, int);
131 static void xdrawcursor(void);
132 static int xgeommasktogravity(int);
133 static void xinit(void);
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 *);
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 enum window_state {
201 WIN_VISIBLE = 1,
202 WIN_FOCUSED = 2
203 };
204
205 /* Font Ring Cache */
206 enum {
207 FRC_NORMAL,
208 FRC_ITALIC,
209 FRC_BOLD,
210 FRC_ITALICBOLD
211 };
212
213 typedef struct {
214 XftFont *font;
215 int flags;
216 Rune unicodep;
217 } Fontcache;
218
219 /* Fontcache is an array now. A new font will be appended to the array. */
220 static Fontcache frc[16];
221 static int frclen = 0;
222 static char *usedfont = NULL;
223 static double usedfontsize = 0;
224 static double defaultfontsize = 0;
225
226 static char *opt_class = NULL;
227 static char **opt_cmd = NULL;
228 static char *opt_embed = NULL;
229 static char *opt_font = NULL;
230 static char *opt_io = NULL;
231 static char *opt_line = NULL;
232 static char *opt_name = NULL;
233 static char *opt_title = NULL;
234
235 void
236 clipcopy(const Arg *dummy)
237 {
238 Atom clipboard;
239
240 if (xsel.clipboard != NULL)
241 free(xsel.clipboard);
242
243 if (xsel.primary != NULL) {
244 xsel.clipboard = xstrdup(xsel.primary);
245 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
246 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
247 }
248 }
249
250 void
251 clippaste(const Arg *dummy)
252 {
253 Atom clipboard;
254
255 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
256 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
257 xw.win, CurrentTime);
258 }
259
260 void
261 selpaste(const Arg *dummy)
262 {
263 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
264 xw.win, CurrentTime);
265 }
266
267 void
268 zoom(const Arg *arg)
269 {
270 Arg larg;
271
272 larg.f = usedfontsize + arg->f;
273 zoomabs(&larg);
274 }
275
276 void
277 zoomabs(const Arg *arg)
278 {
279 xunloadfonts();
280 xloadfonts(usedfont, arg->f);
281 cresize(0, 0);
282 redraw();
283 xhints();
284 }
285
286 void
287 zoomreset(const Arg *arg)
288 {
289 Arg larg;
290
291 if (defaultfontsize > 0) {
292 larg.f = defaultfontsize;
293 zoomabs(&larg);
294 }
295 }
296
297 int
298 x2col(int x)
299 {
300 x -= borderpx;
301 x /= win.cw;
302
303 return LIMIT(x, 0, term.col-1);
304 }
305
306 int
307 y2row(int y)
308 {
309 y -= borderpx;
310 y /= win.ch;
311
312 return LIMIT(y, 0, term.row-1);
313 }
314
315 void
316 mousesel(XEvent *e)
317 {
318 int type, seltype = SEL_REGULAR;
319 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
320
321 for (type = 1; type < LEN(selmasks); ++type) {
322 if (match(selmasks[type], state)) {
323 seltype = type;
324 break;
325 }
326 }
327
328 selextend(x2col(e->xbutton.x), y2row(e->xbutton.y), seltype);
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);
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 ttysend(ms->s, strlen(ms->s));
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);
523 ttysend((char *)data, nitems * format / 8);
524 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
525 ttywrite("\033[201~", 6);
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 if (sel.mode == SEL_READY) {
637 mousesel(e);
638 setsel(getsel(), e->xbutton.time);
639 } else
640 selclear_(NULL);
641 sel.mode = SEL_IDLE;
642 }
643 }
644
645 void
646 bmotion(XEvent *e)
647 {
648 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
649 mousereport(e);
650 return;
651 }
652
653 if (!sel.mode)
654 return;
655
656 sel.mode = SEL_READY;
657 mousesel(e);
658 }
659
660 void
661 cresize(int width, int height)
662 {
663 int col, row;
664
665 if (width != 0)
666 win.w = width;
667 if (height != 0)
668 win.h = height;
669
670 col = (win.w - 2 * borderpx) / win.cw;
671 row = (win.h - 2 * borderpx) / win.ch;
672
673 tresize(col, row);
674 xresize(col, row);
675 ttyresize(win.tw, win.th);
676 }
677
678 void
679 xresize(int col, int row)
680 {
681 win.tw = MAX(1, col * win.cw);
682 win.th = MAX(1, row * win.ch);
683
684 XFreePixmap(xw.dpy, xw.buf);
685 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
686 DefaultDepth(xw.dpy, xw.scr));
687 XftDrawChange(xw.draw, xw.buf);
688 xclear(0, 0, win.w, win.h);
689
690 /* resize to new width */
691 xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
692 }
693
694 ushort
695 sixd_to_16bit(int x)
696 {
697 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
698 }
699
700 int
701 xloadcolor(int i, const char *name, Color *ncolor)
702 {
703 XRenderColor color = { .alpha = 0xffff };
704
705 if (!name) {
706 if (BETWEEN(i, 16, 255)) { /* 256 color */
707 if (i < 6*6*6+16) { /* same colors as xterm */
708 color.red = sixd_to_16bit( ((i-16)/36)%6 );
709 color.green = sixd_to_16bit( ((i-16)/6) %6 );
710 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
711 } else { /* greyscale */
712 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
713 color.green = color.blue = color.red;
714 }
715 return XftColorAllocValue(xw.dpy, xw.vis,
716 xw.cmap, &color, ncolor);
717 } else
718 name = colorname[i];
719 }
720
721 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
722 }
723
724 void
725 xloadcols(void)
726 {
727 int i;
728 static int loaded;
729 Color *cp;
730
731 dc.collen = MAX(LEN(colorname), 256);
732 dc.col = xmalloc(dc.collen * sizeof(Color));
733
734 if (loaded) {
735 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
736 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
737 }
738
739 for (i = 0; i < dc.collen; i++)
740 if (!xloadcolor(i, NULL, &dc.col[i])) {
741 if (colorname[i])
742 die("Could not allocate color '%s'\n", colorname[i]);
743 else
744 die("Could not allocate color %d\n", i);
745 }
746 loaded = 1;
747 }
748
749 int
750 xsetcolorname(int x, const char *name)
751 {
752 Color ncolor;
753
754 if (!BETWEEN(x, 0, dc.collen))
755 return 1;
756
757
758 if (!xloadcolor(x, name, &ncolor))
759 return 1;
760
761 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
762 dc.col[x] = ncolor;
763
764 return 0;
765 }
766
767 /*
768 * Absolute coordinates.
769 */
770 void
771 xclear(int x1, int y1, int x2, int y2)
772 {
773 XftDrawRect(xw.draw,
774 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
775 x1, y1, x2-x1, y2-y1);
776 }
777
778 void
779 xhints(void)
780 {
781 XClassHint class = {opt_name ? opt_name : termname,
782 opt_class ? opt_class : termname};
783 XWMHints wm = {.flags = InputHint, .input = 1};
784 XSizeHints *sizeh = NULL;
785
786 sizeh = XAllocSizeHints();
787
788 sizeh->flags = PSize | PResizeInc | PBaseSize;
789 sizeh->height = win.h;
790 sizeh->width = win.w;
791 sizeh->height_inc = win.ch;
792 sizeh->width_inc = win.cw;
793 sizeh->base_height = 2 * borderpx;
794 sizeh->base_width = 2 * borderpx;
795 if (xw.isfixed) {
796 sizeh->flags |= PMaxSize | PMinSize;
797 sizeh->min_width = sizeh->max_width = win.w;
798 sizeh->min_height = sizeh->max_height = win.h;
799 }
800 if (xw.gm & (XValue|YValue)) {
801 sizeh->flags |= USPosition | PWinGravity;
802 sizeh->x = xw.l;
803 sizeh->y = xw.t;
804 sizeh->win_gravity = xgeommasktogravity(xw.gm);
805 }
806
807 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
808 &class);
809 XFree(sizeh);
810 }
811
812 int
813 xgeommasktogravity(int mask)
814 {
815 switch (mask & (XNegative|YNegative)) {
816 case 0:
817 return NorthWestGravity;
818 case XNegative:
819 return NorthEastGravity;
820 case YNegative:
821 return SouthWestGravity;
822 }
823
824 return SouthEastGravity;
825 }
826
827 int
828 xloadfont(Font *f, FcPattern *pattern)
829 {
830 FcPattern *configured;
831 FcPattern *match;
832 FcResult result;
833 XGlyphInfo extents;
834 int wantattr, haveattr;
835
836 /*
837 * Manually configure instead of calling XftMatchFont
838 * so that we can use the configured pattern for
839 * "missing glyph" lookups.
840 */
841 configured = FcPatternDuplicate(pattern);
842 if (!configured)
843 return 1;
844
845 FcConfigSubstitute(NULL, configured, FcMatchPattern);
846 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
847
848 match = FcFontMatch(NULL, configured, &result);
849 if (!match) {
850 FcPatternDestroy(configured);
851 return 1;
852 }
853
854 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
855 FcPatternDestroy(configured);
856 FcPatternDestroy(match);
857 return 1;
858 }
859
860 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
861 XftResultMatch)) {
862 /*
863 * Check if xft was unable to find a font with the appropriate
864 * slant but gave us one anyway. Try to mitigate.
865 */
866 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
867 &haveattr) != XftResultMatch) || haveattr < wantattr) {
868 f->badslant = 1;
869 fputs("st: font slant does not match\n", stderr);
870 }
871 }
872
873 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
874 XftResultMatch)) {
875 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
876 &haveattr) != XftResultMatch) || haveattr != wantattr) {
877 f->badweight = 1;
878 fputs("st: font weight does not match\n", stderr);
879 }
880 }
881
882 XftTextExtentsUtf8(xw.dpy, f->match,
883 (const FcChar8 *) ascii_printable,
884 strlen(ascii_printable), &extents);
885
886 f->set = NULL;
887 f->pattern = configured;
888
889 f->ascent = f->match->ascent;
890 f->descent = f->match->descent;
891 f->lbearing = 0;
892 f->rbearing = f->match->max_advance_width;
893
894 f->height = f->ascent + f->descent;
895 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
896
897 return 0;
898 }
899
900 void
901 xloadfonts(char *fontstr, double fontsize)
902 {
903 FcPattern *pattern;
904 double fontval;
905 float ceilf(float);
906
907 if (fontstr[0] == '-') {
908 pattern = XftXlfdParse(fontstr, False, False);
909 } else {
910 pattern = FcNameParse((FcChar8 *)fontstr);
911 }
912
913 if (!pattern)
914 die("st: can't open font %s\n", fontstr);
915
916 if (fontsize > 1) {
917 FcPatternDel(pattern, FC_PIXEL_SIZE);
918 FcPatternDel(pattern, FC_SIZE);
919 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
920 usedfontsize = fontsize;
921 } else {
922 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
923 FcResultMatch) {
924 usedfontsize = fontval;
925 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
926 FcResultMatch) {
927 usedfontsize = -1;
928 } else {
929 /*
930 * Default font size is 12, if none given. This is to
931 * have a known usedfontsize value.
932 */
933 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
934 usedfontsize = 12;
935 }
936 defaultfontsize = usedfontsize;
937 }
938
939 if (xloadfont(&dc.font, pattern))
940 die("st: can't open font %s\n", fontstr);
941
942 if (usedfontsize < 0) {
943 FcPatternGetDouble(dc.font.match->pattern,
944 FC_PIXEL_SIZE, 0, &fontval);
945 usedfontsize = fontval;
946 if (fontsize == 0)
947 defaultfontsize = fontval;
948 }
949
950 /* Setting character width and height. */
951 win.cw = ceilf(dc.font.width * cwscale);
952 win.ch = ceilf(dc.font.height * chscale);
953
954 FcPatternDel(pattern, FC_SLANT);
955 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
956 if (xloadfont(&dc.ifont, pattern))
957 die("st: can't open font %s\n", fontstr);
958
959 FcPatternDel(pattern, FC_WEIGHT);
960 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
961 if (xloadfont(&dc.ibfont, pattern))
962 die("st: can't open font %s\n", fontstr);
963
964 FcPatternDel(pattern, FC_SLANT);
965 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
966 if (xloadfont(&dc.bfont, pattern))
967 die("st: can't open font %s\n", fontstr);
968
969 FcPatternDestroy(pattern);
970 }
971
972 void
973 xunloadfont(Font *f)
974 {
975 XftFontClose(xw.dpy, f->match);
976 FcPatternDestroy(f->pattern);
977 if (f->set)
978 FcFontSetDestroy(f->set);
979 }
980
981 void
982 xunloadfonts(void)
983 {
984 /* Free the loaded fonts in the font cache. */
985 while (frclen > 0)
986 XftFontClose(xw.dpy, frc[--frclen].font);
987
988 xunloadfont(&dc.font);
989 xunloadfont(&dc.bfont);
990 xunloadfont(&dc.ifont);
991 xunloadfont(&dc.ibfont);
992 }
993
994 void
995 xinit(void)
996 {
997 XGCValues gcvalues;
998 Cursor cursor;
999 Window parent;
1000 pid_t thispid = getpid();
1001 XColor xmousefg, xmousebg;
1002
1003 if (!(xw.dpy = XOpenDisplay(NULL)))
1004 die("Can't open display\n");
1005 xw.scr = XDefaultScreen(xw.dpy);
1006 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
1007
1008 /* font */
1009 if (!FcInit())
1010 die("Could not init fontconfig.\n");
1011
1012 usedfont = (opt_font == NULL)? font : opt_font;
1013 xloadfonts(usedfont, 0);
1014
1015 /* colors */
1016 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1017 xloadcols();
1018
1019 /* adjust fixed window geometry */
1020 win.w = 2 * borderpx + term.col * win.cw;
1021 win.h = 2 * borderpx + term.row * win.ch;
1022 if (xw.gm & XNegative)
1023 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
1024 if (xw.gm & YNegative)
1025 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
1026
1027 /* Events */
1028 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
1029 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
1030 xw.attrs.bit_gravity = NorthWestGravity;
1031 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
1032 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1033 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
1034 xw.attrs.colormap = xw.cmap;
1035
1036 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
1037 parent = XRootWindow(xw.dpy, xw.scr);
1038 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
1039 win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1040 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
1041 | CWEventMask | CWColormap, &xw.attrs);
1042
1043 memset(&gcvalues, 0, sizeof(gcvalues));
1044 gcvalues.graphics_exposures = False;
1045 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
1046 &gcvalues);
1047 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
1048 DefaultDepth(xw.dpy, xw.scr));
1049 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
1050 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
1051
1052 /* font spec buffer */
1053 xw.specbuf = xmalloc(term.col * sizeof(GlyphFontSpec));
1054
1055 /* Xft rendering context */
1056 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
1057
1058 /* input methods */
1059 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1060 XSetLocaleModifiers("@im=local");
1061 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1062 XSetLocaleModifiers("@im=");
1063 if ((xw.xim = XOpenIM(xw.dpy,
1064 NULL, NULL, NULL)) == NULL) {
1065 die("XOpenIM failed. Could not open input"
1066 " device.\n");
1067 }
1068 }
1069 }
1070 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
1071 | XIMStatusNothing, XNClientWindow, xw.win,
1072 XNFocusWindow, xw.win, NULL);
1073 if (xw.xic == NULL)
1074 die("XCreateIC failed. Could not obtain input method.\n");
1075
1076 /* white cursor, black outline */
1077 cursor = XCreateFontCursor(xw.dpy, mouseshape);
1078 XDefineCursor(xw.dpy, xw.win, cursor);
1079
1080 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
1081 xmousefg.red = 0xffff;
1082 xmousefg.green = 0xffff;
1083 xmousefg.blue = 0xffff;
1084 }
1085
1086 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
1087 xmousebg.red = 0x0000;
1088 xmousebg.green = 0x0000;
1089 xmousebg.blue = 0x0000;
1090 }
1091
1092 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
1093
1094 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1095 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
1096 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
1097 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
1098
1099 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
1100 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
1101 PropModeReplace, (uchar *)&thispid, 1);
1102
1103 resettitle();
1104 XMapWindow(xw.dpy, xw.win);
1105 xhints();
1106 XSync(xw.dpy, False);
1107
1108 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
1109 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
1110 xsel.primary = NULL;
1111 xsel.clipboard = NULL;
1112 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
1113 if (xsel.xtarget == None)
1114 xsel.xtarget = XA_STRING;
1115 }
1116
1117 int
1118 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
1119 {
1120 float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
1121 ushort mode, prevmode = USHRT_MAX;
1122 Font *font = &dc.font;
1123 int frcflags = FRC_NORMAL;
1124 float runewidth = win.cw;
1125 Rune rune;
1126 FT_UInt glyphidx;
1127 FcResult fcres;
1128 FcPattern *fcpattern, *fontpattern;
1129 FcFontSet *fcsets[] = { NULL };
1130 FcCharSet *fccharset;
1131 int i, f, numspecs = 0;
1132
1133 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1134 /* Fetch rune and mode for current glyph. */
1135 rune = glyphs[i].u;
1136 mode = glyphs[i].mode;
1137
1138 /* Skip dummy wide-character spacing. */
1139 if (mode == ATTR_WDUMMY)
1140 continue;
1141
1142 /* Determine font for glyph if different from previous glyph. */
1143 if (prevmode != mode) {
1144 prevmode = mode;
1145 font = &dc.font;
1146 frcflags = FRC_NORMAL;
1147 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1148 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1149 font = &dc.ibfont;
1150 frcflags = FRC_ITALICBOLD;
1151 } else if (mode & ATTR_ITALIC) {
1152 font = &dc.ifont;
1153 frcflags = FRC_ITALIC;
1154 } else if (mode & ATTR_BOLD) {
1155 font = &dc.bfont;
1156 frcflags = FRC_BOLD;
1157 }
1158 yp = winy + font->ascent;
1159 }
1160
1161 /* Lookup character index with default font. */
1162 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1163 if (glyphidx) {
1164 specs[numspecs].font = font->match;
1165 specs[numspecs].glyph = glyphidx;
1166 specs[numspecs].x = (short)xp;
1167 specs[numspecs].y = (short)yp;
1168 xp += runewidth;
1169 numspecs++;
1170 continue;
1171 }
1172
1173 /* Fallback on font cache, search the font cache for match. */
1174 for (f = 0; f < frclen; f++) {
1175 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1176 /* Everything correct. */
1177 if (glyphidx && frc[f].flags == frcflags)
1178 break;
1179 /* We got a default font for a not found glyph. */
1180 if (!glyphidx && frc[f].flags == frcflags
1181 && frc[f].unicodep == rune) {
1182 break;
1183 }
1184 }
1185
1186 /* Nothing was found. Use fontconfig to find matching font. */
1187 if (f >= frclen) {
1188 if (!font->set)
1189 font->set = FcFontSort(0, font->pattern,
1190 1, 0, &fcres);
1191 fcsets[0] = font->set;
1192
1193 /*
1194 * Nothing was found in the cache. Now use
1195 * some dozen of Fontconfig calls to get the
1196 * font for one single character.
1197 *
1198 * Xft and fontconfig are design failures.
1199 */
1200 fcpattern = FcPatternDuplicate(font->pattern);
1201 fccharset = FcCharSetCreate();
1202
1203 FcCharSetAddChar(fccharset, rune);
1204 FcPatternAddCharSet(fcpattern, FC_CHARSET,
1205 fccharset);
1206 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1207
1208 FcConfigSubstitute(0, fcpattern,
1209 FcMatchPattern);
1210 FcDefaultSubstitute(fcpattern);
1211
1212 fontpattern = FcFontSetMatch(0, fcsets, 1,
1213 fcpattern, &fcres);
1214
1215 /*
1216 * Overwrite or create the new cache entry.
1217 */
1218 if (frclen >= LEN(frc)) {
1219 frclen = LEN(frc) - 1;
1220 XftFontClose(xw.dpy, frc[frclen].font);
1221 frc[frclen].unicodep = 0;
1222 }
1223
1224 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1225 fontpattern);
1226 if (!frc[frclen].font)
1227 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1228 strerror(errno));
1229 frc[frclen].flags = frcflags;
1230 frc[frclen].unicodep = rune;
1231
1232 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1233
1234 f = frclen;
1235 frclen++;
1236
1237 FcPatternDestroy(fcpattern);
1238 FcCharSetDestroy(fccharset);
1239 }
1240
1241 specs[numspecs].font = frc[f].font;
1242 specs[numspecs].glyph = glyphidx;
1243 specs[numspecs].x = (short)xp;
1244 specs[numspecs].y = (short)yp;
1245 xp += runewidth;
1246 numspecs++;
1247 }
1248
1249 return numspecs;
1250 }
1251
1252 void
1253 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1254 {
1255 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1256 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1257 width = charlen * win.cw;
1258 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1259 XRenderColor colfg, colbg;
1260 XRectangle r;
1261
1262 /* Fallback on color display for attributes not supported by the font */
1263 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1264 if (dc.ibfont.badslant || dc.ibfont.badweight)
1265 base.fg = defaultattr;
1266 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1267 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1268 base.fg = defaultattr;
1269 }
1270
1271 if (IS_TRUECOL(base.fg)) {
1272 colfg.alpha = 0xffff;
1273 colfg.red = TRUERED(base.fg);
1274 colfg.green = TRUEGREEN(base.fg);
1275 colfg.blue = TRUEBLUE(base.fg);
1276 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1277 fg = &truefg;
1278 } else {
1279 fg = &dc.col[base.fg];
1280 }
1281
1282 if (IS_TRUECOL(base.bg)) {
1283 colbg.alpha = 0xffff;
1284 colbg.green = TRUEGREEN(base.bg);
1285 colbg.red = TRUERED(base.bg);
1286 colbg.blue = TRUEBLUE(base.bg);
1287 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1288 bg = &truebg;
1289 } else {
1290 bg = &dc.col[base.bg];
1291 }
1292
1293 /* Change basic system colors [0-7] to bright system colors [8-15] */
1294 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1295 fg = &dc.col[base.fg + 8];
1296
1297 if (IS_SET(MODE_REVERSE)) {
1298 if (fg == &dc.col[defaultfg]) {
1299 fg = &dc.col[defaultbg];
1300 } else {
1301 colfg.red = ~fg->color.red;
1302 colfg.green = ~fg->color.green;
1303 colfg.blue = ~fg->color.blue;
1304 colfg.alpha = fg->color.alpha;
1305 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1306 &revfg);
1307 fg = &revfg;
1308 }
1309
1310 if (bg == &dc.col[defaultbg]) {
1311 bg = &dc.col[defaultfg];
1312 } else {
1313 colbg.red = ~bg->color.red;
1314 colbg.green = ~bg->color.green;
1315 colbg.blue = ~bg->color.blue;
1316 colbg.alpha = bg->color.alpha;
1317 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1318 &revbg);
1319 bg = &revbg;
1320 }
1321 }
1322
1323 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1324 colfg.red = fg->color.red / 2;
1325 colfg.green = fg->color.green / 2;
1326 colfg.blue = fg->color.blue / 2;
1327 colfg.alpha = fg->color.alpha;
1328 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1329 fg = &revfg;
1330 }
1331
1332
1333 if (base.mode & ATTR_REVERSE) {
1334 temp = fg;
1335 fg = bg;
1336 bg = temp;
1337 }
1338
1339 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
1340 fg = bg;
1341
1342 if (base.mode & ATTR_INVISIBLE)
1343 fg = bg;
1344
1345 /* Intelligent cleaning up of the borders. */
1346 if (x == 0) {
1347 xclear(0, (y == 0)? 0 : winy, borderpx,
1348 winy + win.ch + ((y >= term.row-1)? win.h : 0));
1349 }
1350 if (x + charlen >= term.col) {
1351 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1352 ((y >= term.row-1)? win.h : (winy + win.ch)));
1353 }
1354 if (y == 0)
1355 xclear(winx, 0, winx + width, borderpx);
1356 if (y == term.row-1)
1357 xclear(winx, winy + win.ch, winx + width, win.h);
1358
1359 /* Clean up the region we want to draw to. */
1360 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1361
1362 /* Set the clip region because Xft is sometimes dirty. */
1363 r.x = 0;
1364 r.y = 0;
1365 r.height = win.ch;
1366 r.width = width;
1367 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1368
1369 /* Render the glyphs. */
1370 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1371
1372 /* Render underline and strikethrough. */
1373 if (base.mode & ATTR_UNDERLINE) {
1374 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
1375 width, 1);
1376 }
1377
1378 if (base.mode & ATTR_STRUCK) {
1379 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
1380 width, 1);
1381 }
1382
1383 /* Reset clip to none. */
1384 XftDrawSetClip(xw.draw, 0);
1385 }
1386
1387 void
1388 xdrawglyph(Glyph g, int x, int y)
1389 {
1390 int numspecs;
1391 XftGlyphFontSpec spec;
1392
1393 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1394 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1395 }
1396
1397 void
1398 xdrawcursor(void)
1399 {
1400 static int oldx = 0, oldy = 0;
1401 int curx;
1402 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
1403 Color drawcol;
1404
1405 LIMIT(oldx, 0, term.col-1);
1406 LIMIT(oldy, 0, term.row-1);
1407
1408 curx = term.c.x;
1409
1410 /* adjust position if in dummy */
1411 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
1412 oldx--;
1413 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
1414 curx--;
1415
1416 /* remove the old cursor */
1417 og = term.line[oldy][oldx];
1418 if (selected(oldx, oldy))
1419 og.mode ^= ATTR_REVERSE;
1420 xdrawglyph(og, oldx, oldy);
1421
1422 g.u = term.line[term.c.y][term.c.x].u;
1423 g.mode |= term.line[term.c.y][term.c.x].mode &
1424 (ATTR_BOLD | ATTR_ITALIC | ATTR_UNDERLINE | ATTR_STRUCK);
1425
1426 /*
1427 * Select the right color for the right mode.
1428 */
1429 if (IS_SET(MODE_REVERSE)) {
1430 g.mode |= ATTR_REVERSE;
1431 g.bg = defaultfg;
1432 if (selected(term.c.x, term.c.y)) {
1433 drawcol = dc.col[defaultcs];
1434 g.fg = defaultrcs;
1435 } else {
1436 drawcol = dc.col[defaultrcs];
1437 g.fg = defaultcs;
1438 }
1439 } else {
1440 if (selected(term.c.x, term.c.y)) {
1441 drawcol = dc.col[defaultrcs];
1442 g.fg = defaultfg;
1443 g.bg = defaultrcs;
1444 } else {
1445 drawcol = dc.col[defaultcs];
1446 }
1447 }
1448
1449 if (IS_SET(MODE_HIDE))
1450 return;
1451
1452 /* draw the new one */
1453 if (win.state & WIN_FOCUSED) {
1454 switch (win.cursor) {
1455 case 7: /* st extension: snowman */
1456 utf8decode("☃", &g.u, UTF_SIZ);
1457 case 0: /* Blinking Block */
1458 case 1: /* Blinking Block (Default) */
1459 case 2: /* Steady Block */
1460 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
1461 xdrawglyph(g, term.c.x, term.c.y);
1462 break;
1463 case 3: /* Blinking Underline */
1464 case 4: /* Steady Underline */
1465 XftDrawRect(xw.draw, &drawcol,
1466 borderpx + curx * win.cw,
1467 borderpx + (term.c.y + 1) * win.ch - \
1468 cursorthickness,
1469 win.cw, cursorthickness);
1470 break;
1471 case 5: /* Blinking bar */
1472 case 6: /* Steady bar */
1473 XftDrawRect(xw.draw, &drawcol,
1474 borderpx + curx * win.cw,
1475 borderpx + term.c.y * win.ch,
1476 cursorthickness, win.ch);
1477 break;
1478 }
1479 } else {
1480 XftDrawRect(xw.draw, &drawcol,
1481 borderpx + curx * win.cw,
1482 borderpx + term.c.y * win.ch,
1483 win.cw - 1, 1);
1484 XftDrawRect(xw.draw, &drawcol,
1485 borderpx + curx * win.cw,
1486 borderpx + term.c.y * win.ch,
1487 1, win.ch - 1);
1488 XftDrawRect(xw.draw, &drawcol,
1489 borderpx + (curx + 1) * win.cw - 1,
1490 borderpx + term.c.y * win.ch,
1491 1, win.ch - 1);
1492 XftDrawRect(xw.draw, &drawcol,
1493 borderpx + curx * win.cw,
1494 borderpx + (term.c.y + 1) * win.ch - 1,
1495 win.cw, 1);
1496 }
1497 oldx = curx, oldy = term.c.y;
1498 }
1499
1500 void
1501 xsetenv(void)
1502 {
1503 char buf[sizeof(long) * 8 + 1];
1504
1505 snprintf(buf, sizeof(buf), "%lu", xw.win);
1506 setenv("WINDOWID", buf, 1);
1507 }
1508
1509 void
1510 xsettitle(char *p)
1511 {
1512 XTextProperty prop;
1513 DEFAULT(p, "st");
1514
1515 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1516 &prop);
1517 XSetWMName(xw.dpy, xw.win, &prop);
1518 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1519 XFree(prop.value);
1520 }
1521
1522 void
1523 draw(void)
1524 {
1525 drawregion(0, 0, term.col, term.row);
1526 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1527 win.h, 0, 0);
1528 XSetForeground(xw.dpy, dc.gc,
1529 dc.col[IS_SET(MODE_REVERSE)?
1530 defaultfg : defaultbg].pixel);
1531 }
1532
1533 void
1534 drawregion(int x1, int y1, int x2, int y2)
1535 {
1536 int i, x, y, ox, numspecs;
1537 Glyph base, new;
1538 XftGlyphFontSpec *specs;
1539
1540 if (!(win.state & WIN_VISIBLE))
1541 return;
1542
1543 for (y = y1; y < y2; y++) {
1544 if (!term.dirty[y])
1545 continue;
1546
1547 term.dirty[y] = 0;
1548
1549 specs = xw.specbuf;
1550 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
1551
1552 i = ox = 0;
1553 for (x = x1; x < x2 && i < numspecs; x++) {
1554 new = term.line[y][x];
1555 if (new.mode == ATTR_WDUMMY)
1556 continue;
1557 if (selected(x, y))
1558 new.mode ^= ATTR_REVERSE;
1559 if (i > 0 && ATTRCMP(base, new)) {
1560 xdrawglyphfontspecs(specs, base, i, ox, y);
1561 specs += i;
1562 numspecs -= i;
1563 i = 0;
1564 }
1565 if (i == 0) {
1566 ox = x;
1567 base = new;
1568 }
1569 i++;
1570 }
1571 if (i > 0)
1572 xdrawglyphfontspecs(specs, base, i, ox, y);
1573 }
1574 xdrawcursor();
1575 }
1576
1577 void
1578 expose(XEvent *ev)
1579 {
1580 redraw();
1581 }
1582
1583 void
1584 visibility(XEvent *ev)
1585 {
1586 XVisibilityEvent *e = &ev->xvisibility;
1587
1588 MODBIT(win.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
1589 }
1590
1591 void
1592 unmap(XEvent *ev)
1593 {
1594 win.state &= ~WIN_VISIBLE;
1595 }
1596
1597 void
1598 xsetpointermotion(int set)
1599 {
1600 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1601 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1602 }
1603
1604 int
1605 xsetcursor(int cursor)
1606 {
1607 DEFAULT(cursor, 1);
1608 if (!BETWEEN(cursor, 0, 6))
1609 return 1;
1610 win.cursor = cursor;
1611 return 0;
1612 }
1613
1614 void
1615 xseturgency(int add)
1616 {
1617 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1618
1619 MODBIT(h->flags, add, XUrgencyHint);
1620 XSetWMHints(xw.dpy, xw.win, h);
1621 XFree(h);
1622 }
1623
1624 void
1625 xbell(void)
1626 {
1627 if (!(win.state & WIN_FOCUSED))
1628 xseturgency(1);
1629 if (bellvolume)
1630 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1631 }
1632
1633 void
1634 focus(XEvent *ev)
1635 {
1636 XFocusChangeEvent *e = &ev->xfocus;
1637
1638 if (e->mode == NotifyGrab)
1639 return;
1640
1641 if (ev->type == FocusIn) {
1642 XSetICFocus(xw.xic);
1643 win.state |= WIN_FOCUSED;
1644 xseturgency(0);
1645 if (IS_SET(MODE_FOCUS))
1646 ttywrite("\033[I", 3);
1647 } else {
1648 XUnsetICFocus(xw.xic);
1649 win.state &= ~WIN_FOCUSED;
1650 if (IS_SET(MODE_FOCUS))
1651 ttywrite("\033[O", 3);
1652 }
1653 }
1654
1655 int
1656 match(uint mask, uint state)
1657 {
1658 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1659 }
1660
1661 char*
1662 kmap(KeySym k, uint state)
1663 {
1664 Key *kp;
1665 int i;
1666
1667 /* Check for mapped keys out of X11 function keys. */
1668 for (i = 0; i < LEN(mappedkeys); i++) {
1669 if (mappedkeys[i] == k)
1670 break;
1671 }
1672 if (i == LEN(mappedkeys)) {
1673 if ((k & 0xFFFF) < 0xFD00)
1674 return NULL;
1675 }
1676
1677 for (kp = key; kp < key + LEN(key); kp++) {
1678 if (kp->k != k)
1679 continue;
1680
1681 if (!match(kp->mask, state))
1682 continue;
1683
1684 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1685 continue;
1686 if (term.numlock && kp->appkey == 2)
1687 continue;
1688
1689 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1690 continue;
1691
1692 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
1693 continue;
1694
1695 return kp->s;
1696 }
1697
1698 return NULL;
1699 }
1700
1701 void
1702 kpress(XEvent *ev)
1703 {
1704 XKeyEvent *e = &ev->xkey;
1705 KeySym ksym;
1706 char buf[32], *customkey;
1707 int len;
1708 Rune c;
1709 Status status;
1710 Shortcut *bp;
1711
1712 if (IS_SET(MODE_KBDLOCK))
1713 return;
1714
1715 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
1716 /* 1. shortcuts */
1717 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
1718 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1719 bp->func(&(bp->arg));
1720 return;
1721 }
1722 }
1723
1724 /* 2. custom keys from config.h */
1725 if ((customkey = kmap(ksym, e->state))) {
1726 ttysend(customkey, strlen(customkey));
1727 return;
1728 }
1729
1730 /* 3. composed string from input method */
1731 if (len == 0)
1732 return;
1733 if (len == 1 && e->state & Mod1Mask) {
1734 if (IS_SET(MODE_8BIT)) {
1735 if (*buf < 0177) {
1736 c = *buf | 0x80;
1737 len = utf8encode(c, buf);
1738 }
1739 } else {
1740 buf[1] = buf[0];
1741 buf[0] = '\033';
1742 len = 2;
1743 }
1744 }
1745 ttysend(buf, len);
1746 }
1747
1748
1749 void
1750 cmessage(XEvent *e)
1751 {
1752 /*
1753 * See xembed specs
1754 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1755 */
1756 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1757 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1758 win.state |= WIN_FOCUSED;
1759 xseturgency(0);
1760 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1761 win.state &= ~WIN_FOCUSED;
1762 }
1763 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1764 /* Send SIGHUP to shell */
1765 kill(pid, SIGHUP);
1766 exit(0);
1767 }
1768 }
1769
1770 void
1771 resize(XEvent *e)
1772 {
1773 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1774 return;
1775
1776 cresize(e->xconfigure.width, e->xconfigure.height);
1777 }
1778
1779 void
1780 run(void)
1781 {
1782 XEvent ev;
1783 int w = win.w, h = win.h;
1784 fd_set rfd;
1785 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
1786 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
1787 long deltatime;
1788
1789 /* Waiting for window mapping */
1790 do {
1791 XNextEvent(xw.dpy, &ev);
1792 /*
1793 * This XFilterEvent call is required because of XOpenIM. It
1794 * does filter out the key event and some client message for
1795 * the input method too.
1796 */
1797 if (XFilterEvent(&ev, None))
1798 continue;
1799 if (ev.type == ConfigureNotify) {
1800 w = ev.xconfigure.width;
1801 h = ev.xconfigure.height;
1802 }
1803 } while (ev.type != MapNotify);
1804
1805 ttynew(opt_line, opt_io, opt_cmd);
1806 cresize(w, h);
1807
1808 clock_gettime(CLOCK_MONOTONIC, &last);
1809 lastblink = last;
1810
1811 for (xev = actionfps;;) {
1812 FD_ZERO(&rfd);
1813 FD_SET(cmdfd, &rfd);
1814 FD_SET(xfd, &rfd);
1815
1816 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1817 if (errno == EINTR)
1818 continue;
1819 die("select failed: %s\n", strerror(errno));
1820 }
1821 if (FD_ISSET(cmdfd, &rfd)) {
1822 ttyread();
1823 if (blinktimeout) {
1824 blinkset = tattrset(ATTR_BLINK);
1825 if (!blinkset)
1826 MODBIT(term.mode, 0, MODE_BLINK);
1827 }
1828 }
1829
1830 if (FD_ISSET(xfd, &rfd))
1831 xev = actionfps;
1832
1833 clock_gettime(CLOCK_MONOTONIC, &now);
1834 drawtimeout.tv_sec = 0;
1835 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
1836 tv = &drawtimeout;
1837
1838 dodraw = 0;
1839 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
1840 tsetdirtattr(ATTR_BLINK);
1841 term.mode ^= MODE_BLINK;
1842 lastblink = now;
1843 dodraw = 1;
1844 }
1845 deltatime = TIMEDIFF(now, last);
1846 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
1847 dodraw = 1;
1848 last = now;
1849 }
1850
1851 if (dodraw) {
1852 while (XPending(xw.dpy)) {
1853 XNextEvent(xw.dpy, &ev);
1854 if (XFilterEvent(&ev, None))
1855 continue;
1856 if (handler[ev.type])
1857 (handler[ev.type])(&ev);
1858 }
1859
1860 draw();
1861 XFlush(xw.dpy);
1862
1863 if (xev && !FD_ISSET(xfd, &rfd))
1864 xev--;
1865 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
1866 if (blinkset) {
1867 if (TIMEDIFF(now, lastblink) \
1868 > blinktimeout) {
1869 drawtimeout.tv_nsec = 1000;
1870 } else {
1871 drawtimeout.tv_nsec = (1E6 * \
1872 (blinktimeout - \
1873 TIMEDIFF(now,
1874 lastblink)));
1875 }
1876 drawtimeout.tv_sec = \
1877 drawtimeout.tv_nsec / 1E9;
1878 drawtimeout.tv_nsec %= (long)1E9;
1879 } else {
1880 tv = NULL;
1881 }
1882 }
1883 }
1884 }
1885 }
1886
1887 void
1888 usage(void)
1889 {
1890 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
1891 " [-n name] [-o file]\n"
1892 " [-T title] [-t title] [-w windowid]"
1893 " [[-e] command [args ...]]\n"
1894 " %s [-aiv] [-c class] [-f font] [-g geometry]"
1895 " [-n name] [-o file]\n"
1896 " [-T title] [-t title] [-w windowid] -l line"
1897 " [stty_args ...]\n", argv0, argv0);
1898 }
1899
1900 int
1901 main(int argc, char *argv[])
1902 {
1903 xw.l = xw.t = 0;
1904 xw.isfixed = False;
1905 win.cursor = cursorshape;
1906
1907 ARGBEGIN {
1908 case 'a':
1909 allowaltscreen = 0;
1910 break;
1911 case 'c':
1912 opt_class = EARGF(usage());
1913 break;
1914 case 'e':
1915 if (argc > 0)
1916 --argc, ++argv;
1917 goto run;
1918 case 'f':
1919 opt_font = EARGF(usage());
1920 break;
1921 case 'g':
1922 xw.gm = XParseGeometry(EARGF(usage()),
1923 &xw.l, &xw.t, &cols, &rows);
1924 break;
1925 case 'i':
1926 xw.isfixed = 1;
1927 break;
1928 case 'o':
1929 opt_io = EARGF(usage());
1930 break;
1931 case 'l':
1932 opt_line = EARGF(usage());
1933 break;
1934 case 'n':
1935 opt_name = EARGF(usage());
1936 break;
1937 case 't':
1938 case 'T':
1939 opt_title = EARGF(usage());
1940 break;
1941 case 'w':
1942 opt_embed = EARGF(usage());
1943 break;
1944 case 'v':
1945 die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
1946 break;
1947 default:
1948 usage();
1949 } ARGEND;
1950
1951 run:
1952 if (argc > 0) {
1953 /* eat all remaining arguments */
1954 opt_cmd = argv;
1955 if (!opt_title && !opt_line)
1956 opt_title = basename(xstrdup(argv[0]));
1957 }
1958 setlocale(LC_CTYPE, "");
1959 XSetLocaleModifiers("");
1960 tnew(MAX(cols, 1), MAX(rows, 1));
1961 xinit();
1962 xsetenv();
1963 selinit();
1964 run();
1965
1966 return 0;
1967 }