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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 /* function definitions used in config.h */
48 static void clipcopy(const Arg *);
49 static void clippaste(const Arg *);
50 static void selpaste(const Arg *);
51 static void zoom(const Arg *);
52 static void zoomabs(const Arg *);
53 static void zoomreset(const Arg *);
54
55 /* config.h for applying patches and the configuration. */
56 #include "config.h"
57
58 /* XEMBED messages */
59 #define XEMBED_FOCUS_IN 4
60 #define XEMBED_FOCUS_OUT 5
61
62 /* macros */
63 #define TRUERED(x) (((x) & 0xff0000) >> 8)
64 #define TRUEGREEN(x) (((x) & 0xff00))
65 #define TRUEBLUE(x) (((x) & 0xff) << 8)
66
67 typedef XftDraw *Draw;
68 typedef XftColor Color;
69 typedef XftGlyphFontSpec GlyphFontSpec;
70
71 /* Purely graphic info */
72 typedef struct {
73 Display *dpy;
74 Colormap cmap;
75 Window win;
76 Drawable buf;
77 GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
78 Atom xembed, wmdeletewin, netwmname, netwmpid;
79 XIM xim;
80 XIC xic;
81 Draw draw;
82 Visual *vis;
83 XSetWindowAttributes attrs;
84 int scr;
85 int isfixed; /* is fixed geometry? */
86 int l, t; /* left and top offset */
87 int gm; /* geometry mask */
88 } XWindow;
89
90 typedef struct {
91 Atom xtarget;
92 } XSelection;
93
94 /* Font structure */
95 #define Font Font_
96 typedef struct {
97 int height;
98 int width;
99 int ascent;
100 int descent;
101 int badslant;
102 int badweight;
103 short lbearing;
104 short rbearing;
105 XftFont *match;
106 FcFontSet *set;
107 FcPattern *pattern;
108 } Font;
109
110 /* Drawing Context */
111 typedef struct {
112 Color *col;
113 size_t collen;
114 Font font, bfont, ifont, ibfont;
115 GC gc;
116 } DC;
117
118 static inline ushort sixd_to_16bit(int);
119 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
120 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
121 static void xdrawglyph(Glyph, int, int);
122 static void xclear(int, int, int, int);
123 static void xdrawcursor(void);
124 static int xgeommasktogravity(int);
125 static void xinit(void);
126 static void cresize(int, int);
127 static void xresize(int, int);
128 static int xloadfont(Font *, FcPattern *);
129 static void xloadfonts(char *, double);
130 static void xunloadfont(Font *);
131 static void xunloadfonts(void);
132 static void xsetenv(void);
133 static void xseturgency(int);
134 static int x2col(int);
135 static int y2row(int);
136
137 static void expose(XEvent *);
138 static void visibility(XEvent *);
139 static void unmap(XEvent *);
140 static void kpress(XEvent *);
141 static void cmessage(XEvent *);
142 static void resize(XEvent *);
143 static void focus(XEvent *);
144 static void brelease(XEvent *);
145 static void bpress(XEvent *);
146 static void bmotion(XEvent *);
147 static void propnotify(XEvent *);
148 static void selnotify(XEvent *);
149 static void selclear_(XEvent *);
150 static void selrequest(XEvent *);
151 static void setsel(char *, Time);
152 static void getbuttoninfo(XEvent *);
153 static void mousereport(XEvent *);
154 static char *kmap(KeySym, uint);
155 static int match(uint, uint);
156
157 static void run(void);
158 static void usage(void);
159
160 static void (*handler[LASTEvent])(XEvent *) = {
161 [KeyPress] = kpress,
162 [ClientMessage] = cmessage,
163 [ConfigureNotify] = resize,
164 [VisibilityNotify] = visibility,
165 [UnmapNotify] = unmap,
166 [Expose] = expose,
167 [FocusIn] = focus,
168 [FocusOut] = focus,
169 [MotionNotify] = bmotion,
170 [ButtonPress] = bpress,
171 [ButtonRelease] = brelease,
172 /*
173 * Uncomment if you want the selection to disappear when you select something
174 * different in another window.
175 */
176 /* [SelectionClear] = selclear_, */
177 [SelectionNotify] = selnotify,
178 /*
179 * PropertyNotify is only turned on when there is some INCR transfer happening
180 * for the selection retrieval.
181 */
182 [PropertyNotify] = propnotify,
183 [SelectionRequest] = selrequest,
184 };
185
186 /* Globals */
187 static DC dc;
188 static XWindow xw;
189 static XSelection xsel;
190 static TermWindow win;
191
192 enum window_state {
193 WIN_VISIBLE = 1,
194 WIN_FOCUSED = 2
195 };
196
197 /* Font Ring Cache */
198 enum {
199 FRC_NORMAL,
200 FRC_ITALIC,
201 FRC_BOLD,
202 FRC_ITALICBOLD
203 };
204
205 typedef struct {
206 XftFont *font;
207 int flags;
208 Rune unicodep;
209 } Fontcache;
210
211 /* Fontcache is an array now. A new font will be appended to the array. */
212 static Fontcache frc[16];
213 static int frclen = 0;
214 static char *usedfont = NULL;
215 static double usedfontsize = 0;
216 static double defaultfontsize = 0;
217
218 static char *opt_class = NULL;
219 static char **opt_cmd = NULL;
220 static char *opt_embed = NULL;
221 static char *opt_font = NULL;
222 static char *opt_io = NULL;
223 static char *opt_line = NULL;
224 static char *opt_name = NULL;
225 static char *opt_title = NULL;
226
227 void
228 clipcopy(const Arg *dummy)
229 {
230 Atom clipboard;
231
232 if (sel.clipboard != NULL)
233 free(sel.clipboard);
234
235 if (sel.primary != NULL) {
236 sel.clipboard = xstrdup(sel.primary);
237 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
238 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
239 }
240 }
241
242 void
243 clippaste(const Arg *dummy)
244 {
245 Atom clipboard;
246
247 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
248 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
249 xw.win, CurrentTime);
250 }
251
252 void
253 selpaste(const Arg *dummy)
254 {
255 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
256 xw.win, CurrentTime);
257 }
258
259 void
260 zoom(const Arg *arg)
261 {
262 Arg larg;
263
264 larg.f = usedfontsize + arg->f;
265 zoomabs(&larg);
266 }
267
268 void
269 zoomabs(const Arg *arg)
270 {
271 xunloadfonts();
272 xloadfonts(usedfont, arg->f);
273 cresize(0, 0);
274 ttyresize(win.tw, win.th);
275 redraw();
276 xhints();
277 }
278
279 void
280 zoomreset(const Arg *arg)
281 {
282 Arg larg;
283
284 if (defaultfontsize > 0) {
285 larg.f = defaultfontsize;
286 zoomabs(&larg);
287 }
288 }
289
290 int
291 x2col(int x)
292 {
293 x -= borderpx;
294 x /= win.cw;
295
296 return LIMIT(x, 0, term.col-1);
297 }
298
299 int
300 y2row(int y)
301 {
302 y -= borderpx;
303 y /= win.ch;
304
305 return LIMIT(y, 0, term.row-1);
306 }
307
308 void
309 getbuttoninfo(XEvent *e)
310 {
311 int type;
312 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
313
314 sel.alt = IS_SET(MODE_ALTSCREEN);
315
316 sel.oe.x = x2col(e->xbutton.x);
317 sel.oe.y = y2row(e->xbutton.y);
318 selnormalize();
319
320 sel.type = SEL_REGULAR;
321 for (type = 1; type < LEN(selmasks); ++type) {
322 if (match(selmasks[type], state)) {
323 sel.type = type;
324 break;
325 }
326 }
327 }
328
329 void
330 mousereport(XEvent *e)
331 {
332 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
333 button = e->xbutton.button, state = e->xbutton.state,
334 len;
335 char buf[40];
336 static int ox, oy;
337
338 /* from urxvt */
339 if (e->xbutton.type == MotionNotify) {
340 if (x == ox && y == oy)
341 return;
342 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
343 return;
344 /* MOUSE_MOTION: no reporting if no button is pressed */
345 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
346 return;
347
348 button = oldbutton + 32;
349 ox = x;
350 oy = y;
351 } else {
352 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
353 button = 3;
354 } else {
355 button -= Button1;
356 if (button >= 3)
357 button += 64 - 3;
358 }
359 if (e->xbutton.type == ButtonPress) {
360 oldbutton = button;
361 ox = x;
362 oy = y;
363 } else if (e->xbutton.type == ButtonRelease) {
364 oldbutton = 3;
365 /* MODE_MOUSEX10: no button release reporting */
366 if (IS_SET(MODE_MOUSEX10))
367 return;
368 if (button == 64 || button == 65)
369 return;
370 }
371 }
372
373 if (!IS_SET(MODE_MOUSEX10)) {
374 button += ((state & ShiftMask ) ? 4 : 0)
375 + ((state & Mod4Mask ) ? 8 : 0)
376 + ((state & ControlMask) ? 16 : 0);
377 }
378
379 if (IS_SET(MODE_MOUSESGR)) {
380 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
381 button, x+1, y+1,
382 e->xbutton.type == ButtonRelease ? 'm' : 'M');
383 } else if (x < 223 && y < 223) {
384 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
385 32+button, 32+x+1, 32+y+1);
386 } else {
387 return;
388 }
389
390 ttywrite(buf, len);
391 }
392
393 void
394 bpress(XEvent *e)
395 {
396 struct timespec now;
397 MouseShortcut *ms;
398
399 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
400 mousereport(e);
401 return;
402 }
403
404 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
405 if (e->xbutton.button == ms->b
406 && match(ms->mask, e->xbutton.state)) {
407 ttysend(ms->s, strlen(ms->s));
408 return;
409 }
410 }
411
412 if (e->xbutton.button == Button1) {
413 clock_gettime(CLOCK_MONOTONIC, &now);
414
415 /* Clear previous selection, logically and visually. */
416 selclear_(NULL);
417 sel.mode = SEL_EMPTY;
418 sel.type = SEL_REGULAR;
419 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
420 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
421
422 /*
423 * If the user clicks below predefined timeouts specific
424 * snapping behaviour is exposed.
425 */
426 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
427 sel.snap = SNAP_LINE;
428 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
429 sel.snap = SNAP_WORD;
430 } else {
431 sel.snap = 0;
432 }
433 selnormalize();
434
435 if (sel.snap != 0)
436 sel.mode = SEL_READY;
437 tsetdirt(sel.nb.y, sel.ne.y);
438 sel.tclick2 = sel.tclick1;
439 sel.tclick1 = now;
440 }
441 }
442
443 void
444 propnotify(XEvent *e)
445 {
446 XPropertyEvent *xpev;
447 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
448
449 xpev = &e->xproperty;
450 if (xpev->state == PropertyNewValue &&
451 (xpev->atom == XA_PRIMARY ||
452 xpev->atom == clipboard)) {
453 selnotify(e);
454 }
455 }
456
457 void
458 selnotify(XEvent *e)
459 {
460 ulong nitems, ofs, rem;
461 int format;
462 uchar *data, *last, *repl;
463 Atom type, incratom, property;
464
465 incratom = XInternAtom(xw.dpy, "INCR", 0);
466
467 ofs = 0;
468 if (e->type == SelectionNotify) {
469 property = e->xselection.property;
470 } else if(e->type == PropertyNotify) {
471 property = e->xproperty.atom;
472 } else {
473 return;
474 }
475 if (property == None)
476 return;
477
478 do {
479 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
480 BUFSIZ/4, False, AnyPropertyType,
481 &type, &format, &nitems, &rem,
482 &data)) {
483 fprintf(stderr, "Clipboard allocation failed\n");
484 return;
485 }
486
487 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
488 /*
489 * If there is some PropertyNotify with no data, then
490 * this is the signal of the selection owner that all
491 * data has been transferred. We won't need to receive
492 * PropertyNotify events anymore.
493 */
494 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
495 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
496 &xw.attrs);
497 }
498
499 if (type == incratom) {
500 /*
501 * Activate the PropertyNotify events so we receive
502 * when the selection owner does send us the next
503 * chunk of data.
504 */
505 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
506 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
507 &xw.attrs);
508
509 /*
510 * Deleting the property is the transfer start signal.
511 */
512 XDeleteProperty(xw.dpy, xw.win, (int)property);
513 continue;
514 }
515
516 /*
517 * As seen in getsel:
518 * Line endings are inconsistent in the terminal and GUI world
519 * copy and pasting. When receiving some selection data,
520 * replace all '\n' with '\r'.
521 * FIXME: Fix the computer world.
522 */
523 repl = data;
524 last = data + nitems * format / 8;
525 while ((repl = memchr(repl, '\n', last - repl))) {
526 *repl++ = '\r';
527 }
528
529 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
530 ttywrite("\033[200~", 6);
531 ttysend((char *)data, nitems * format / 8);
532 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
533 ttywrite("\033[201~", 6);
534 XFree(data);
535 /* number of 32-bit chunks returned */
536 ofs += nitems * format / 32;
537 } while (rem > 0);
538
539 /*
540 * Deleting the property again tells the selection owner to send the
541 * next data chunk in the property.
542 */
543 XDeleteProperty(xw.dpy, xw.win, (int)property);
544 }
545
546 void
547 xclipcopy(void)
548 {
549 clipcopy(NULL);
550 }
551
552 void
553 selclear_(XEvent *e)
554 {
555 selclear();
556 }
557
558 void
559 selrequest(XEvent *e)
560 {
561 XSelectionRequestEvent *xsre;
562 XSelectionEvent xev;
563 Atom xa_targets, string, clipboard;
564 char *seltext;
565
566 xsre = (XSelectionRequestEvent *) e;
567 xev.type = SelectionNotify;
568 xev.requestor = xsre->requestor;
569 xev.selection = xsre->selection;
570 xev.target = xsre->target;
571 xev.time = xsre->time;
572 if (xsre->property == None)
573 xsre->property = xsre->target;
574
575 /* reject */
576 xev.property = None;
577
578 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
579 if (xsre->target == xa_targets) {
580 /* respond with the supported type */
581 string = xsel.xtarget;
582 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
583 XA_ATOM, 32, PropModeReplace,
584 (uchar *) &string, 1);
585 xev.property = xsre->property;
586 } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
587 /*
588 * xith XA_STRING non ascii characters may be incorrect in the
589 * requestor. It is not our problem, use utf8.
590 */
591 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
592 if (xsre->selection == XA_PRIMARY) {
593 seltext = sel.primary;
594 } else if (xsre->selection == clipboard) {
595 seltext = sel.clipboard;
596 } else {
597 fprintf(stderr,
598 "Unhandled clipboard selection 0x%lx\n",
599 xsre->selection);
600 return;
601 }
602 if (seltext != NULL) {
603 XChangeProperty(xsre->display, xsre->requestor,
604 xsre->property, xsre->target,
605 8, PropModeReplace,
606 (uchar *)seltext, strlen(seltext));
607 xev.property = xsre->property;
608 }
609 }
610
611 /* all done, send a notification to the listener */
612 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
613 fprintf(stderr, "Error sending SelectionNotify event\n");
614 }
615
616 void
617 setsel(char *str, Time t)
618 {
619 free(sel.primary);
620 sel.primary = str;
621
622 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
623 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
624 selclear_(NULL);
625 }
626
627 void
628 xsetsel(char *str)
629 {
630 setsel(str, CurrentTime);
631 }
632
633 void
634 brelease(XEvent *e)
635 {
636 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
637 mousereport(e);
638 return;
639 }
640
641 if (e->xbutton.button == Button2) {
642 selpaste(NULL);
643 } else if (e->xbutton.button == Button1) {
644 if (sel.mode == SEL_READY) {
645 getbuttoninfo(e);
646 setsel(getsel(), e->xbutton.time);
647 } else
648 selclear_(NULL);
649 sel.mode = SEL_IDLE;
650 tsetdirt(sel.nb.y, sel.ne.y);
651 }
652 }
653
654 void
655 bmotion(XEvent *e)
656 {
657 int oldey, oldex, oldsby, oldsey;
658
659 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
660 mousereport(e);
661 return;
662 }
663
664 if (!sel.mode)
665 return;
666
667 sel.mode = SEL_READY;
668 oldey = sel.oe.y;
669 oldex = sel.oe.x;
670 oldsby = sel.nb.y;
671 oldsey = sel.ne.y;
672 getbuttoninfo(e);
673
674 if (oldey != sel.oe.y || oldex != sel.oe.x)
675 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
676 }
677
678 void
679 cresize(int width, int height)
680 {
681 int col, row;
682
683 if (width != 0)
684 win.w = width;
685 if (height != 0)
686 win.h = height;
687
688 col = (win.w - 2 * borderpx) / win.cw;
689 row = (win.h - 2 * borderpx) / win.ch;
690
691 tresize(col, row);
692 xresize(col, row);
693 }
694
695 void
696 xresize(int col, int row)
697 {
698 win.tw = MAX(1, col * win.cw);
699 win.th = MAX(1, row * win.ch);
700
701 XFreePixmap(xw.dpy, xw.buf);
702 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
703 DefaultDepth(xw.dpy, xw.scr));
704 XftDrawChange(xw.draw, xw.buf);
705 xclear(0, 0, win.w, win.h);
706
707 /* resize to new width */
708 xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
709 }
710
711 ushort
712 sixd_to_16bit(int x)
713 {
714 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
715 }
716
717 int
718 xloadcolor(int i, const char *name, Color *ncolor)
719 {
720 XRenderColor color = { .alpha = 0xffff };
721
722 if (!name) {
723 if (BETWEEN(i, 16, 255)) { /* 256 color */
724 if (i < 6*6*6+16) { /* same colors as xterm */
725 color.red = sixd_to_16bit( ((i-16)/36)%6 );
726 color.green = sixd_to_16bit( ((i-16)/6) %6 );
727 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
728 } else { /* greyscale */
729 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
730 color.green = color.blue = color.red;
731 }
732 return XftColorAllocValue(xw.dpy, xw.vis,
733 xw.cmap, &color, ncolor);
734 } else
735 name = colorname[i];
736 }
737
738 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
739 }
740
741 void
742 xloadcols(void)
743 {
744 int i;
745 static int loaded;
746 Color *cp;
747
748 dc.collen = MAX(LEN(colorname), 256);
749 dc.col = xmalloc(dc.collen * sizeof(Color));
750
751 if (loaded) {
752 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
753 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
754 }
755
756 for (i = 0; i < dc.collen; i++)
757 if (!xloadcolor(i, NULL, &dc.col[i])) {
758 if (colorname[i])
759 die("Could not allocate color '%s'\n", colorname[i]);
760 else
761 die("Could not allocate color %d\n", i);
762 }
763 loaded = 1;
764 }
765
766 int
767 xsetcolorname(int x, const char *name)
768 {
769 Color ncolor;
770
771 if (!BETWEEN(x, 0, dc.collen))
772 return 1;
773
774
775 if (!xloadcolor(x, name, &ncolor))
776 return 1;
777
778 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
779 dc.col[x] = ncolor;
780
781 return 0;
782 }
783
784 /*
785 * Absolute coordinates.
786 */
787 void
788 xclear(int x1, int y1, int x2, int y2)
789 {
790 XftDrawRect(xw.draw,
791 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
792 x1, y1, x2-x1, y2-y1);
793 }
794
795 void
796 xhints(void)
797 {
798 XClassHint class = {opt_name ? opt_name : termname,
799 opt_class ? opt_class : termname};
800 XWMHints wm = {.flags = InputHint, .input = 1};
801 XSizeHints *sizeh = NULL;
802
803 sizeh = XAllocSizeHints();
804
805 sizeh->flags = PSize | PResizeInc | PBaseSize;
806 sizeh->height = win.h;
807 sizeh->width = win.w;
808 sizeh->height_inc = win.ch;
809 sizeh->width_inc = win.cw;
810 sizeh->base_height = 2 * borderpx;
811 sizeh->base_width = 2 * borderpx;
812 if (xw.isfixed) {
813 sizeh->flags |= PMaxSize | PMinSize;
814 sizeh->min_width = sizeh->max_width = win.w;
815 sizeh->min_height = sizeh->max_height = win.h;
816 }
817 if (xw.gm & (XValue|YValue)) {
818 sizeh->flags |= USPosition | PWinGravity;
819 sizeh->x = xw.l;
820 sizeh->y = xw.t;
821 sizeh->win_gravity = xgeommasktogravity(xw.gm);
822 }
823
824 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
825 &class);
826 XFree(sizeh);
827 }
828
829 int
830 xgeommasktogravity(int mask)
831 {
832 switch (mask & (XNegative|YNegative)) {
833 case 0:
834 return NorthWestGravity;
835 case XNegative:
836 return NorthEastGravity;
837 case YNegative:
838 return SouthWestGravity;
839 }
840
841 return SouthEastGravity;
842 }
843
844 int
845 xloadfont(Font *f, FcPattern *pattern)
846 {
847 FcPattern *configured;
848 FcPattern *match;
849 FcResult result;
850 XGlyphInfo extents;
851 int wantattr, haveattr;
852
853 /*
854 * Manually configure instead of calling XftMatchFont
855 * so that we can use the configured pattern for
856 * "missing glyph" lookups.
857 */
858 configured = FcPatternDuplicate(pattern);
859 if (!configured)
860 return 1;
861
862 FcConfigSubstitute(NULL, configured, FcMatchPattern);
863 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
864
865 match = FcFontMatch(NULL, configured, &result);
866 if (!match) {
867 FcPatternDestroy(configured);
868 return 1;
869 }
870
871 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
872 FcPatternDestroy(configured);
873 FcPatternDestroy(match);
874 return 1;
875 }
876
877 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
878 XftResultMatch)) {
879 /*
880 * Check if xft was unable to find a font with the appropriate
881 * slant but gave us one anyway. Try to mitigate.
882 */
883 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
884 &haveattr) != XftResultMatch) || haveattr < wantattr) {
885 f->badslant = 1;
886 fputs("st: font slant does not match\n", stderr);
887 }
888 }
889
890 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
891 XftResultMatch)) {
892 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
893 &haveattr) != XftResultMatch) || haveattr != wantattr) {
894 f->badweight = 1;
895 fputs("st: font weight does not match\n", stderr);
896 }
897 }
898
899 XftTextExtentsUtf8(xw.dpy, f->match,
900 (const FcChar8 *) ascii_printable,
901 strlen(ascii_printable), &extents);
902
903 f->set = NULL;
904 f->pattern = configured;
905
906 f->ascent = f->match->ascent;
907 f->descent = f->match->descent;
908 f->lbearing = 0;
909 f->rbearing = f->match->max_advance_width;
910
911 f->height = f->ascent + f->descent;
912 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
913
914 return 0;
915 }
916
917 void
918 xloadfonts(char *fontstr, double fontsize)
919 {
920 FcPattern *pattern;
921 double fontval;
922 float ceilf(float);
923
924 if (fontstr[0] == '-') {
925 pattern = XftXlfdParse(fontstr, False, False);
926 } else {
927 pattern = FcNameParse((FcChar8 *)fontstr);
928 }
929
930 if (!pattern)
931 die("st: can't open font %s\n", fontstr);
932
933 if (fontsize > 1) {
934 FcPatternDel(pattern, FC_PIXEL_SIZE);
935 FcPatternDel(pattern, FC_SIZE);
936 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
937 usedfontsize = fontsize;
938 } else {
939 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
940 FcResultMatch) {
941 usedfontsize = fontval;
942 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
943 FcResultMatch) {
944 usedfontsize = -1;
945 } else {
946 /*
947 * Default font size is 12, if none given. This is to
948 * have a known usedfontsize value.
949 */
950 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
951 usedfontsize = 12;
952 }
953 defaultfontsize = usedfontsize;
954 }
955
956 if (xloadfont(&dc.font, pattern))
957 die("st: can't open font %s\n", fontstr);
958
959 if (usedfontsize < 0) {
960 FcPatternGetDouble(dc.font.match->pattern,
961 FC_PIXEL_SIZE, 0, &fontval);
962 usedfontsize = fontval;
963 if (fontsize == 0)
964 defaultfontsize = fontval;
965 }
966
967 /* Setting character width and height. */
968 win.cw = ceilf(dc.font.width * cwscale);
969 win.ch = ceilf(dc.font.height * chscale);
970
971 FcPatternDel(pattern, FC_SLANT);
972 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
973 if (xloadfont(&dc.ifont, pattern))
974 die("st: can't open font %s\n", fontstr);
975
976 FcPatternDel(pattern, FC_WEIGHT);
977 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
978 if (xloadfont(&dc.ibfont, pattern))
979 die("st: can't open font %s\n", fontstr);
980
981 FcPatternDel(pattern, FC_SLANT);
982 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
983 if (xloadfont(&dc.bfont, pattern))
984 die("st: can't open font %s\n", fontstr);
985
986 FcPatternDestroy(pattern);
987 }
988
989 void
990 xunloadfont(Font *f)
991 {
992 XftFontClose(xw.dpy, f->match);
993 FcPatternDestroy(f->pattern);
994 if (f->set)
995 FcFontSetDestroy(f->set);
996 }
997
998 void
999 xunloadfonts(void)
1000 {
1001 /* Free the loaded fonts in the font cache. */
1002 while (frclen > 0)
1003 XftFontClose(xw.dpy, frc[--frclen].font);
1004
1005 xunloadfont(&dc.font);
1006 xunloadfont(&dc.bfont);
1007 xunloadfont(&dc.ifont);
1008 xunloadfont(&dc.ibfont);
1009 }
1010
1011 void
1012 xinit(void)
1013 {
1014 XGCValues gcvalues;
1015 Cursor cursor;
1016 Window parent;
1017 pid_t thispid = getpid();
1018 XColor xmousefg, xmousebg;
1019
1020 if (!(xw.dpy = XOpenDisplay(NULL)))
1021 die("Can't open display\n");
1022 xw.scr = XDefaultScreen(xw.dpy);
1023 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
1024
1025 /* font */
1026 if (!FcInit())
1027 die("Could not init fontconfig.\n");
1028
1029 usedfont = (opt_font == NULL)? font : opt_font;
1030 xloadfonts(usedfont, 0);
1031
1032 /* colors */
1033 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1034 xloadcols();
1035
1036 /* adjust fixed window geometry */
1037 win.w = 2 * borderpx + term.col * win.cw;
1038 win.h = 2 * borderpx + term.row * win.ch;
1039 if (xw.gm & XNegative)
1040 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
1041 if (xw.gm & YNegative)
1042 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
1043
1044 /* Events */
1045 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
1046 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
1047 xw.attrs.bit_gravity = NorthWestGravity;
1048 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
1049 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1050 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
1051 xw.attrs.colormap = xw.cmap;
1052
1053 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
1054 parent = XRootWindow(xw.dpy, xw.scr);
1055 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
1056 win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1057 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
1058 | CWEventMask | CWColormap, &xw.attrs);
1059
1060 memset(&gcvalues, 0, sizeof(gcvalues));
1061 gcvalues.graphics_exposures = False;
1062 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
1063 &gcvalues);
1064 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
1065 DefaultDepth(xw.dpy, xw.scr));
1066 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
1067 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
1068
1069 /* font spec buffer */
1070 xw.specbuf = xmalloc(term.col * sizeof(GlyphFontSpec));
1071
1072 /* Xft rendering context */
1073 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
1074
1075 /* input methods */
1076 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1077 XSetLocaleModifiers("@im=local");
1078 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1079 XSetLocaleModifiers("@im=");
1080 if ((xw.xim = XOpenIM(xw.dpy,
1081 NULL, NULL, NULL)) == NULL) {
1082 die("XOpenIM failed. Could not open input"
1083 " device.\n");
1084 }
1085 }
1086 }
1087 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
1088 | XIMStatusNothing, XNClientWindow, xw.win,
1089 XNFocusWindow, xw.win, NULL);
1090 if (xw.xic == NULL)
1091 die("XCreateIC failed. Could not obtain input method.\n");
1092
1093 /* white cursor, black outline */
1094 cursor = XCreateFontCursor(xw.dpy, mouseshape);
1095 XDefineCursor(xw.dpy, xw.win, cursor);
1096
1097 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
1098 xmousefg.red = 0xffff;
1099 xmousefg.green = 0xffff;
1100 xmousefg.blue = 0xffff;
1101 }
1102
1103 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
1104 xmousebg.red = 0x0000;
1105 xmousebg.green = 0x0000;
1106 xmousebg.blue = 0x0000;
1107 }
1108
1109 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
1110
1111 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1112 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
1113 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
1114 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
1115
1116 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
1117 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
1118 PropModeReplace, (uchar *)&thispid, 1);
1119
1120 resettitle();
1121 XMapWindow(xw.dpy, xw.win);
1122 xhints();
1123 XSync(xw.dpy, False);
1124
1125 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
1126 if (xsel.xtarget == None)
1127 xsel.xtarget = XA_STRING;
1128 }
1129
1130 int
1131 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
1132 {
1133 float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
1134 ushort mode, prevmode = USHRT_MAX;
1135 Font *font = &dc.font;
1136 int frcflags = FRC_NORMAL;
1137 float runewidth = win.cw;
1138 Rune rune;
1139 FT_UInt glyphidx;
1140 FcResult fcres;
1141 FcPattern *fcpattern, *fontpattern;
1142 FcFontSet *fcsets[] = { NULL };
1143 FcCharSet *fccharset;
1144 int i, f, numspecs = 0;
1145
1146 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1147 /* Fetch rune and mode for current glyph. */
1148 rune = glyphs[i].u;
1149 mode = glyphs[i].mode;
1150
1151 /* Skip dummy wide-character spacing. */
1152 if (mode == ATTR_WDUMMY)
1153 continue;
1154
1155 /* Determine font for glyph if different from previous glyph. */
1156 if (prevmode != mode) {
1157 prevmode = mode;
1158 font = &dc.font;
1159 frcflags = FRC_NORMAL;
1160 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1161 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1162 font = &dc.ibfont;
1163 frcflags = FRC_ITALICBOLD;
1164 } else if (mode & ATTR_ITALIC) {
1165 font = &dc.ifont;
1166 frcflags = FRC_ITALIC;
1167 } else if (mode & ATTR_BOLD) {
1168 font = &dc.bfont;
1169 frcflags = FRC_BOLD;
1170 }
1171 yp = winy + font->ascent;
1172 }
1173
1174 /* Lookup character index with default font. */
1175 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1176 if (glyphidx) {
1177 specs[numspecs].font = font->match;
1178 specs[numspecs].glyph = glyphidx;
1179 specs[numspecs].x = (short)xp;
1180 specs[numspecs].y = (short)yp;
1181 xp += runewidth;
1182 numspecs++;
1183 continue;
1184 }
1185
1186 /* Fallback on font cache, search the font cache for match. */
1187 for (f = 0; f < frclen; f++) {
1188 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1189 /* Everything correct. */
1190 if (glyphidx && frc[f].flags == frcflags)
1191 break;
1192 /* We got a default font for a not found glyph. */
1193 if (!glyphidx && frc[f].flags == frcflags
1194 && frc[f].unicodep == rune) {
1195 break;
1196 }
1197 }
1198
1199 /* Nothing was found. Use fontconfig to find matching font. */
1200 if (f >= frclen) {
1201 if (!font->set)
1202 font->set = FcFontSort(0, font->pattern,
1203 1, 0, &fcres);
1204 fcsets[0] = font->set;
1205
1206 /*
1207 * Nothing was found in the cache. Now use
1208 * some dozen of Fontconfig calls to get the
1209 * font for one single character.
1210 *
1211 * Xft and fontconfig are design failures.
1212 */
1213 fcpattern = FcPatternDuplicate(font->pattern);
1214 fccharset = FcCharSetCreate();
1215
1216 FcCharSetAddChar(fccharset, rune);
1217 FcPatternAddCharSet(fcpattern, FC_CHARSET,
1218 fccharset);
1219 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1220
1221 FcConfigSubstitute(0, fcpattern,
1222 FcMatchPattern);
1223 FcDefaultSubstitute(fcpattern);
1224
1225 fontpattern = FcFontSetMatch(0, fcsets, 1,
1226 fcpattern, &fcres);
1227
1228 /*
1229 * Overwrite or create the new cache entry.
1230 */
1231 if (frclen >= LEN(frc)) {
1232 frclen = LEN(frc) - 1;
1233 XftFontClose(xw.dpy, frc[frclen].font);
1234 frc[frclen].unicodep = 0;
1235 }
1236
1237 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1238 fontpattern);
1239 if (!frc[frclen].font)
1240 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1241 strerror(errno));
1242 frc[frclen].flags = frcflags;
1243 frc[frclen].unicodep = rune;
1244
1245 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1246
1247 f = frclen;
1248 frclen++;
1249
1250 FcPatternDestroy(fcpattern);
1251 FcCharSetDestroy(fccharset);
1252 }
1253
1254 specs[numspecs].font = frc[f].font;
1255 specs[numspecs].glyph = glyphidx;
1256 specs[numspecs].x = (short)xp;
1257 specs[numspecs].y = (short)yp;
1258 xp += runewidth;
1259 numspecs++;
1260 }
1261
1262 return numspecs;
1263 }
1264
1265 void
1266 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1267 {
1268 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1269 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1270 width = charlen * win.cw;
1271 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1272 XRenderColor colfg, colbg;
1273 XRectangle r;
1274
1275 /* Fallback on color display for attributes not supported by the font */
1276 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1277 if (dc.ibfont.badslant || dc.ibfont.badweight)
1278 base.fg = defaultattr;
1279 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1280 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1281 base.fg = defaultattr;
1282 }
1283
1284 if (IS_TRUECOL(base.fg)) {
1285 colfg.alpha = 0xffff;
1286 colfg.red = TRUERED(base.fg);
1287 colfg.green = TRUEGREEN(base.fg);
1288 colfg.blue = TRUEBLUE(base.fg);
1289 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1290 fg = &truefg;
1291 } else {
1292 fg = &dc.col[base.fg];
1293 }
1294
1295 if (IS_TRUECOL(base.bg)) {
1296 colbg.alpha = 0xffff;
1297 colbg.green = TRUEGREEN(base.bg);
1298 colbg.red = TRUERED(base.bg);
1299 colbg.blue = TRUEBLUE(base.bg);
1300 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1301 bg = &truebg;
1302 } else {
1303 bg = &dc.col[base.bg];
1304 }
1305
1306 /* Change basic system colors [0-7] to bright system colors [8-15] */
1307 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1308 fg = &dc.col[base.fg + 8];
1309
1310 if (IS_SET(MODE_REVERSE)) {
1311 if (fg == &dc.col[defaultfg]) {
1312 fg = &dc.col[defaultbg];
1313 } else {
1314 colfg.red = ~fg->color.red;
1315 colfg.green = ~fg->color.green;
1316 colfg.blue = ~fg->color.blue;
1317 colfg.alpha = fg->color.alpha;
1318 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1319 &revfg);
1320 fg = &revfg;
1321 }
1322
1323 if (bg == &dc.col[defaultbg]) {
1324 bg = &dc.col[defaultfg];
1325 } else {
1326 colbg.red = ~bg->color.red;
1327 colbg.green = ~bg->color.green;
1328 colbg.blue = ~bg->color.blue;
1329 colbg.alpha = bg->color.alpha;
1330 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1331 &revbg);
1332 bg = &revbg;
1333 }
1334 }
1335
1336 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1337 colfg.red = fg->color.red / 2;
1338 colfg.green = fg->color.green / 2;
1339 colfg.blue = fg->color.blue / 2;
1340 colfg.alpha = fg->color.alpha;
1341 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1342 fg = &revfg;
1343 }
1344
1345
1346 if (base.mode & ATTR_REVERSE) {
1347 temp = fg;
1348 fg = bg;
1349 bg = temp;
1350 }
1351
1352 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
1353 fg = bg;
1354
1355 if (base.mode & ATTR_INVISIBLE)
1356 fg = bg;
1357
1358 /* Intelligent cleaning up of the borders. */
1359 if (x == 0) {
1360 xclear(0, (y == 0)? 0 : winy, borderpx,
1361 winy + win.ch + ((y >= term.row-1)? win.h : 0));
1362 }
1363 if (x + charlen >= term.col) {
1364 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1365 ((y >= term.row-1)? win.h : (winy + win.ch)));
1366 }
1367 if (y == 0)
1368 xclear(winx, 0, winx + width, borderpx);
1369 if (y == term.row-1)
1370 xclear(winx, winy + win.ch, winx + width, win.h);
1371
1372 /* Clean up the region we want to draw to. */
1373 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1374
1375 /* Set the clip region because Xft is sometimes dirty. */
1376 r.x = 0;
1377 r.y = 0;
1378 r.height = win.ch;
1379 r.width = width;
1380 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1381
1382 /* Render the glyphs. */
1383 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1384
1385 /* Render underline and strikethrough. */
1386 if (base.mode & ATTR_UNDERLINE) {
1387 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
1388 width, 1);
1389 }
1390
1391 if (base.mode & ATTR_STRUCK) {
1392 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
1393 width, 1);
1394 }
1395
1396 /* Reset clip to none. */
1397 XftDrawSetClip(xw.draw, 0);
1398 }
1399
1400 void
1401 xdrawglyph(Glyph g, int x, int y)
1402 {
1403 int numspecs;
1404 XftGlyphFontSpec spec;
1405
1406 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1407 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1408 }
1409
1410 void
1411 xdrawcursor(void)
1412 {
1413 static int oldx = 0, oldy = 0;
1414 int curx;
1415 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
1416 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
1417 Color drawcol;
1418
1419 LIMIT(oldx, 0, term.col-1);
1420 LIMIT(oldy, 0, term.row-1);
1421
1422 curx = term.c.x;
1423
1424 /* adjust position if in dummy */
1425 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
1426 oldx--;
1427 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
1428 curx--;
1429
1430 /* remove the old cursor */
1431 og = term.line[oldy][oldx];
1432 if (ena_sel && selected(oldx, oldy))
1433 og.mode ^= ATTR_REVERSE;
1434 xdrawglyph(og, oldx, oldy);
1435
1436 g.u = term.line[term.c.y][term.c.x].u;
1437 g.mode |= term.line[term.c.y][term.c.x].mode &
1438 (ATTR_BOLD | ATTR_ITALIC | ATTR_UNDERLINE | ATTR_STRUCK);
1439
1440 /*
1441 * Select the right color for the right mode.
1442 */
1443 if (IS_SET(MODE_REVERSE)) {
1444 g.mode |= ATTR_REVERSE;
1445 g.bg = defaultfg;
1446 if (ena_sel && selected(term.c.x, term.c.y)) {
1447 drawcol = dc.col[defaultcs];
1448 g.fg = defaultrcs;
1449 } else {
1450 drawcol = dc.col[defaultrcs];
1451 g.fg = defaultcs;
1452 }
1453 } else {
1454 if (ena_sel && selected(term.c.x, term.c.y)) {
1455 drawcol = dc.col[defaultrcs];
1456 g.fg = defaultfg;
1457 g.bg = defaultrcs;
1458 } else {
1459 drawcol = dc.col[defaultcs];
1460 }
1461 }
1462
1463 if (IS_SET(MODE_HIDE))
1464 return;
1465
1466 /* draw the new one */
1467 if (win.state & WIN_FOCUSED) {
1468 switch (win.cursor) {
1469 case 7: /* st extension: snowman */
1470 utf8decode("☃", &g.u, UTF_SIZ);
1471 case 0: /* Blinking Block */
1472 case 1: /* Blinking Block (Default) */
1473 case 2: /* Steady Block */
1474 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
1475 xdrawglyph(g, term.c.x, term.c.y);
1476 break;
1477 case 3: /* Blinking Underline */
1478 case 4: /* Steady Underline */
1479 XftDrawRect(xw.draw, &drawcol,
1480 borderpx + curx * win.cw,
1481 borderpx + (term.c.y + 1) * win.ch - \
1482 cursorthickness,
1483 win.cw, cursorthickness);
1484 break;
1485 case 5: /* Blinking bar */
1486 case 6: /* Steady bar */
1487 XftDrawRect(xw.draw, &drawcol,
1488 borderpx + curx * win.cw,
1489 borderpx + term.c.y * win.ch,
1490 cursorthickness, win.ch);
1491 break;
1492 }
1493 } else {
1494 XftDrawRect(xw.draw, &drawcol,
1495 borderpx + curx * win.cw,
1496 borderpx + term.c.y * win.ch,
1497 win.cw - 1, 1);
1498 XftDrawRect(xw.draw, &drawcol,
1499 borderpx + curx * win.cw,
1500 borderpx + term.c.y * win.ch,
1501 1, win.ch - 1);
1502 XftDrawRect(xw.draw, &drawcol,
1503 borderpx + (curx + 1) * win.cw - 1,
1504 borderpx + term.c.y * win.ch,
1505 1, win.ch - 1);
1506 XftDrawRect(xw.draw, &drawcol,
1507 borderpx + curx * win.cw,
1508 borderpx + (term.c.y + 1) * win.ch - 1,
1509 win.cw, 1);
1510 }
1511 oldx = curx, oldy = term.c.y;
1512 }
1513
1514 void
1515 xsetenv(void)
1516 {
1517 char buf[sizeof(long) * 8 + 1];
1518
1519 snprintf(buf, sizeof(buf), "%lu", xw.win);
1520 setenv("WINDOWID", buf, 1);
1521 }
1522
1523 void
1524 xsettitle(char *p)
1525 {
1526 XTextProperty prop;
1527 DEFAULT(p, "st");
1528
1529 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1530 &prop);
1531 XSetWMName(xw.dpy, xw.win, &prop);
1532 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1533 XFree(prop.value);
1534 }
1535
1536 void
1537 draw(void)
1538 {
1539 drawregion(0, 0, term.col, term.row);
1540 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1541 win.h, 0, 0);
1542 XSetForeground(xw.dpy, dc.gc,
1543 dc.col[IS_SET(MODE_REVERSE)?
1544 defaultfg : defaultbg].pixel);
1545 }
1546
1547 void
1548 drawregion(int x1, int y1, int x2, int y2)
1549 {
1550 int i, x, y, ox, numspecs;
1551 Glyph base, new;
1552 XftGlyphFontSpec *specs;
1553 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
1554
1555 if (!(win.state & WIN_VISIBLE))
1556 return;
1557
1558 for (y = y1; y < y2; y++) {
1559 if (!term.dirty[y])
1560 continue;
1561
1562 term.dirty[y] = 0;
1563
1564 specs = xw.specbuf;
1565 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
1566
1567 i = ox = 0;
1568 for (x = x1; x < x2 && i < numspecs; x++) {
1569 new = term.line[y][x];
1570 if (new.mode == ATTR_WDUMMY)
1571 continue;
1572 if (ena_sel && selected(x, y))
1573 new.mode ^= ATTR_REVERSE;
1574 if (i > 0 && ATTRCMP(base, new)) {
1575 xdrawglyphfontspecs(specs, base, i, ox, y);
1576 specs += i;
1577 numspecs -= i;
1578 i = 0;
1579 }
1580 if (i == 0) {
1581 ox = x;
1582 base = new;
1583 }
1584 i++;
1585 }
1586 if (i > 0)
1587 xdrawglyphfontspecs(specs, base, i, ox, y);
1588 }
1589 xdrawcursor();
1590 }
1591
1592 void
1593 expose(XEvent *ev)
1594 {
1595 redraw();
1596 }
1597
1598 void
1599 visibility(XEvent *ev)
1600 {
1601 XVisibilityEvent *e = &ev->xvisibility;
1602
1603 MODBIT(win.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
1604 }
1605
1606 void
1607 unmap(XEvent *ev)
1608 {
1609 win.state &= ~WIN_VISIBLE;
1610 }
1611
1612 void
1613 xsetpointermotion(int set)
1614 {
1615 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1616 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1617 }
1618
1619 int
1620 xsetcursor(int cursor)
1621 {
1622 DEFAULT(cursor, 1);
1623 if (!BETWEEN(cursor, 0, 6))
1624 return 1;
1625 win.cursor = cursor;
1626 return 0;
1627 }
1628
1629 void
1630 xseturgency(int add)
1631 {
1632 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1633
1634 MODBIT(h->flags, add, XUrgencyHint);
1635 XSetWMHints(xw.dpy, xw.win, h);
1636 XFree(h);
1637 }
1638
1639 void
1640 xbell(void)
1641 {
1642 if (!(win.state & WIN_FOCUSED))
1643 xseturgency(1);
1644 if (bellvolume)
1645 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1646 }
1647
1648 void
1649 focus(XEvent *ev)
1650 {
1651 XFocusChangeEvent *e = &ev->xfocus;
1652
1653 if (e->mode == NotifyGrab)
1654 return;
1655
1656 if (ev->type == FocusIn) {
1657 XSetICFocus(xw.xic);
1658 win.state |= WIN_FOCUSED;
1659 xseturgency(0);
1660 if (IS_SET(MODE_FOCUS))
1661 ttywrite("\033[I", 3);
1662 } else {
1663 XUnsetICFocus(xw.xic);
1664 win.state &= ~WIN_FOCUSED;
1665 if (IS_SET(MODE_FOCUS))
1666 ttywrite("\033[O", 3);
1667 }
1668 }
1669
1670 int
1671 match(uint mask, uint state)
1672 {
1673 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1674 }
1675
1676 char*
1677 kmap(KeySym k, uint state)
1678 {
1679 Key *kp;
1680 int i;
1681
1682 /* Check for mapped keys out of X11 function keys. */
1683 for (i = 0; i < LEN(mappedkeys); i++) {
1684 if (mappedkeys[i] == k)
1685 break;
1686 }
1687 if (i == LEN(mappedkeys)) {
1688 if ((k & 0xFFFF) < 0xFD00)
1689 return NULL;
1690 }
1691
1692 for (kp = key; kp < key + LEN(key); kp++) {
1693 if (kp->k != k)
1694 continue;
1695
1696 if (!match(kp->mask, state))
1697 continue;
1698
1699 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1700 continue;
1701 if (term.numlock && kp->appkey == 2)
1702 continue;
1703
1704 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1705 continue;
1706
1707 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
1708 continue;
1709
1710 return kp->s;
1711 }
1712
1713 return NULL;
1714 }
1715
1716 void
1717 kpress(XEvent *ev)
1718 {
1719 XKeyEvent *e = &ev->xkey;
1720 KeySym ksym;
1721 char buf[32], *customkey;
1722 int len;
1723 Rune c;
1724 Status status;
1725 Shortcut *bp;
1726
1727 if (IS_SET(MODE_KBDLOCK))
1728 return;
1729
1730 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
1731 /* 1. shortcuts */
1732 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
1733 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1734 bp->func(&(bp->arg));
1735 return;
1736 }
1737 }
1738
1739 /* 2. custom keys from config.h */
1740 if ((customkey = kmap(ksym, e->state))) {
1741 ttysend(customkey, strlen(customkey));
1742 return;
1743 }
1744
1745 /* 3. composed string from input method */
1746 if (len == 0)
1747 return;
1748 if (len == 1 && e->state & Mod1Mask) {
1749 if (IS_SET(MODE_8BIT)) {
1750 if (*buf < 0177) {
1751 c = *buf | 0x80;
1752 len = utf8encode(c, buf);
1753 }
1754 } else {
1755 buf[1] = buf[0];
1756 buf[0] = '\033';
1757 len = 2;
1758 }
1759 }
1760 ttysend(buf, len);
1761 }
1762
1763
1764 void
1765 cmessage(XEvent *e)
1766 {
1767 /*
1768 * See xembed specs
1769 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1770 */
1771 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1772 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1773 win.state |= WIN_FOCUSED;
1774 xseturgency(0);
1775 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1776 win.state &= ~WIN_FOCUSED;
1777 }
1778 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1779 /* Send SIGHUP to shell */
1780 kill(pid, SIGHUP);
1781 exit(0);
1782 }
1783 }
1784
1785 void
1786 resize(XEvent *e)
1787 {
1788 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1789 return;
1790
1791 cresize(e->xconfigure.width, e->xconfigure.height);
1792 ttyresize(win.tw, win.th);
1793 }
1794
1795 void
1796 run(void)
1797 {
1798 XEvent ev;
1799 int w = win.w, h = win.h;
1800 fd_set rfd;
1801 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
1802 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
1803 long deltatime;
1804
1805 /* Waiting for window mapping */
1806 do {
1807 XNextEvent(xw.dpy, &ev);
1808 /*
1809 * This XFilterEvent call is required because of XOpenIM. It
1810 * does filter out the key event and some client message for
1811 * the input method too.
1812 */
1813 if (XFilterEvent(&ev, None))
1814 continue;
1815 if (ev.type == ConfigureNotify) {
1816 w = ev.xconfigure.width;
1817 h = ev.xconfigure.height;
1818 }
1819 } while (ev.type != MapNotify);
1820
1821 cresize(w, h);
1822 ttynew(opt_line, opt_io, opt_cmd);
1823 ttyresize(win.tw, win.th);
1824
1825 clock_gettime(CLOCK_MONOTONIC, &last);
1826 lastblink = last;
1827
1828 for (xev = actionfps;;) {
1829 FD_ZERO(&rfd);
1830 FD_SET(cmdfd, &rfd);
1831 FD_SET(xfd, &rfd);
1832
1833 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1834 if (errno == EINTR)
1835 continue;
1836 die("select failed: %s\n", strerror(errno));
1837 }
1838 if (FD_ISSET(cmdfd, &rfd)) {
1839 ttyread();
1840 if (blinktimeout) {
1841 blinkset = tattrset(ATTR_BLINK);
1842 if (!blinkset)
1843 MODBIT(term.mode, 0, MODE_BLINK);
1844 }
1845 }
1846
1847 if (FD_ISSET(xfd, &rfd))
1848 xev = actionfps;
1849
1850 clock_gettime(CLOCK_MONOTONIC, &now);
1851 drawtimeout.tv_sec = 0;
1852 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
1853 tv = &drawtimeout;
1854
1855 dodraw = 0;
1856 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
1857 tsetdirtattr(ATTR_BLINK);
1858 term.mode ^= MODE_BLINK;
1859 lastblink = now;
1860 dodraw = 1;
1861 }
1862 deltatime = TIMEDIFF(now, last);
1863 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
1864 dodraw = 1;
1865 last = now;
1866 }
1867
1868 if (dodraw) {
1869 while (XPending(xw.dpy)) {
1870 XNextEvent(xw.dpy, &ev);
1871 if (XFilterEvent(&ev, None))
1872 continue;
1873 if (handler[ev.type])
1874 (handler[ev.type])(&ev);
1875 }
1876
1877 draw();
1878 XFlush(xw.dpy);
1879
1880 if (xev && !FD_ISSET(xfd, &rfd))
1881 xev--;
1882 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
1883 if (blinkset) {
1884 if (TIMEDIFF(now, lastblink) \
1885 > blinktimeout) {
1886 drawtimeout.tv_nsec = 1000;
1887 } else {
1888 drawtimeout.tv_nsec = (1E6 * \
1889 (blinktimeout - \
1890 TIMEDIFF(now,
1891 lastblink)));
1892 }
1893 drawtimeout.tv_sec = \
1894 drawtimeout.tv_nsec / 1E9;
1895 drawtimeout.tv_nsec %= (long)1E9;
1896 } else {
1897 tv = NULL;
1898 }
1899 }
1900 }
1901 }
1902 }
1903
1904 void
1905 usage(void)
1906 {
1907 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
1908 " [-n name] [-o file]\n"
1909 " [-T title] [-t title] [-w windowid]"
1910 " [[-e] command [args ...]]\n"
1911 " %s [-aiv] [-c class] [-f font] [-g geometry]"
1912 " [-n name] [-o file]\n"
1913 " [-T title] [-t title] [-w windowid] -l line"
1914 " [stty_args ...]\n", argv0, argv0);
1915 }
1916
1917 int
1918 main(int argc, char *argv[])
1919 {
1920 xw.l = xw.t = 0;
1921 xw.isfixed = False;
1922 win.cursor = cursorshape;
1923
1924 ARGBEGIN {
1925 case 'a':
1926 allowaltscreen = 0;
1927 break;
1928 case 'c':
1929 opt_class = EARGF(usage());
1930 break;
1931 case 'e':
1932 if (argc > 0)
1933 --argc, ++argv;
1934 goto run;
1935 case 'f':
1936 opt_font = EARGF(usage());
1937 break;
1938 case 'g':
1939 xw.gm = XParseGeometry(EARGF(usage()),
1940 &xw.l, &xw.t, &cols, &rows);
1941 break;
1942 case 'i':
1943 xw.isfixed = 1;
1944 break;
1945 case 'o':
1946 opt_io = EARGF(usage());
1947 break;
1948 case 'l':
1949 opt_line = EARGF(usage());
1950 break;
1951 case 'n':
1952 opt_name = EARGF(usage());
1953 break;
1954 case 't':
1955 case 'T':
1956 opt_title = EARGF(usage());
1957 break;
1958 case 'w':
1959 opt_embed = EARGF(usage());
1960 break;
1961 case 'v':
1962 die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
1963 break;
1964 default:
1965 usage();
1966 } ARGEND;
1967
1968 run:
1969 if (argc > 0) {
1970 /* eat all remaining arguments */
1971 opt_cmd = argv;
1972 if (!opt_title && !opt_line)
1973 opt_title = basename(xstrdup(argv[0]));
1974 }
1975 setlocale(LC_CTYPE, "");
1976 XSetLocaleModifiers("");
1977 tnew(MAX(cols, 1), MAX(rows, 1));
1978 xinit();
1979 xsetenv();
1980 selinit();
1981 run();
1982
1983 return 0;
1984 }