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46356fe7e2ff5af6087a9aa17ae63a8c62d41338
[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 /* function definitions used in config.h */
24 static void clipcopy(const Arg *);
25 static void clippaste(const Arg *);
26 static void selpaste(const Arg *);
27 static void zoom(const Arg *);
28 static void zoomabs(const Arg *);
29 static void zoomreset(const Arg *);
30
31 /* config.h for applying patches and the configuration. */
32 #include "config.h"
33
34 /* config.h array lengths */
35 size_t colornamelen = LEN(colorname);
36 size_t mshortcutslen = LEN(mshortcuts);
37 size_t shortcutslen = LEN(shortcuts);
38 size_t selmaskslen = LEN(selmasks);
39 size_t keyslen = LEN(key);
40 size_t mappedkeyslen = LEN(mappedkeys);
41
42 /* XEMBED messages */
43 #define XEMBED_FOCUS_IN 4
44 #define XEMBED_FOCUS_OUT 5
45
46 /* macros */
47 #define TRUERED(x) (((x) & 0xff0000) >> 8)
48 #define TRUEGREEN(x) (((x) & 0xff00))
49 #define TRUEBLUE(x) (((x) & 0xff) << 8)
50
51 typedef XftDraw *Draw;
52 typedef XftColor Color;
53 typedef XftGlyphFontSpec GlyphFontSpec;
54
55 /* Purely graphic info */
56 typedef struct {
57 Display *dpy;
58 Colormap cmap;
59 Window win;
60 Drawable buf;
61 GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
62 Atom xembed, wmdeletewin, netwmname, netwmpid;
63 XIM xim;
64 XIC xic;
65 Draw draw;
66 Visual *vis;
67 XSetWindowAttributes attrs;
68 int scr;
69 int isfixed; /* is fixed geometry? */
70 int l, t; /* left and top offset */
71 int gm; /* geometry mask */
72 } XWindow;
73
74 typedef struct {
75 Atom xtarget;
76 } XSelection;
77
78 /* Font structure */
79 #define Font Font_
80 typedef struct {
81 int height;
82 int width;
83 int ascent;
84 int descent;
85 int badslant;
86 int badweight;
87 short lbearing;
88 short rbearing;
89 XftFont *match;
90 FcFontSet *set;
91 FcPattern *pattern;
92 } Font;
93
94 /* Drawing Context */
95 typedef struct {
96 Color *col;
97 size_t collen;
98 Font font, bfont, ifont, ibfont;
99 GC gc;
100 } DC;
101
102 static inline ushort sixd_to_16bit(int);
103 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
104 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
105 static void xdrawglyph(Glyph, int, int);
106 static void xclear(int, int, int, int);
107 static void xdrawcursor(void);
108 static int xgeommasktogravity(int);
109 static void xinit(void);
110 static void cresize(int, int);
111 static void xresize(int, int);
112 static int xloadfont(Font *, FcPattern *);
113 static void xloadfonts(char *, double);
114 static void xunloadfont(Font *);
115 static void xunloadfonts(void);
116 static void xsetenv(void);
117 static void xseturgency(int);
118 static int x2col(int);
119 static int y2row(int);
120
121 static void expose(XEvent *);
122 static void visibility(XEvent *);
123 static void unmap(XEvent *);
124 static void kpress(XEvent *);
125 static void cmessage(XEvent *);
126 static void resize(XEvent *);
127 static void focus(XEvent *);
128 static void brelease(XEvent *);
129 static void bpress(XEvent *);
130 static void bmotion(XEvent *);
131 static void propnotify(XEvent *);
132 static void selnotify(XEvent *);
133 static void selclear_(XEvent *);
134 static void selrequest(XEvent *);
135 static void selcopy(Time);
136 static void getbuttoninfo(XEvent *);
137 static void mousereport(XEvent *);
138 static char *kmap(KeySym, uint);
139 static int match(uint, uint);
140
141 static void run(void);
142 static void usage(void);
143
144 static void (*handler[LASTEvent])(XEvent *) = {
145 [KeyPress] = kpress,
146 [ClientMessage] = cmessage,
147 [ConfigureNotify] = resize,
148 [VisibilityNotify] = visibility,
149 [UnmapNotify] = unmap,
150 [Expose] = expose,
151 [FocusIn] = focus,
152 [FocusOut] = focus,
153 [MotionNotify] = bmotion,
154 [ButtonPress] = bpress,
155 [ButtonRelease] = brelease,
156 /*
157 * Uncomment if you want the selection to disappear when you select something
158 * different in another window.
159 */
160 /* [SelectionClear] = selclear_, */
161 [SelectionNotify] = selnotify,
162 /*
163 * PropertyNotify is only turned on when there is some INCR transfer happening
164 * for the selection retrieval.
165 */
166 [PropertyNotify] = propnotify,
167 [SelectionRequest] = selrequest,
168 };
169
170 /* Globals */
171 static DC dc;
172 static XWindow xw;
173 static XSelection xsel;
174
175 enum window_state {
176 WIN_VISIBLE = 1,
177 WIN_FOCUSED = 2
178 };
179
180 /* Font Ring Cache */
181 enum {
182 FRC_NORMAL,
183 FRC_ITALIC,
184 FRC_BOLD,
185 FRC_ITALICBOLD
186 };
187
188 typedef struct {
189 XftFont *font;
190 int flags;
191 Rune unicodep;
192 } Fontcache;
193
194 /* Fontcache is an array now. A new font will be appended to the array. */
195 static Fontcache frc[16];
196 static int frclen = 0;
197 static char *usedfont = NULL;
198 static double usedfontsize = 0;
199 static double defaultfontsize = 0;
200
201 static char *opt_class = NULL;
202 static char **opt_cmd = NULL;
203 static char *opt_embed = NULL;
204 static char *opt_font = NULL;
205 static char *opt_io = NULL;
206 static char *opt_line = NULL;
207 static char *opt_name = NULL;
208 static char *opt_title = NULL;
209
210 void
211 clipcopy(const Arg *dummy)
212 {
213 Atom clipboard;
214
215 if (sel.clipboard != NULL)
216 free(sel.clipboard);
217
218 if (sel.primary != NULL) {
219 sel.clipboard = xstrdup(sel.primary);
220 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
221 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
222 }
223 }
224
225 void
226 clippaste(const Arg *dummy)
227 {
228 Atom clipboard;
229
230 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
231 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
232 xw.win, CurrentTime);
233 }
234
235 void
236 selpaste(const Arg *dummy)
237 {
238 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
239 xw.win, CurrentTime);
240 }
241
242 void
243 zoom(const Arg *arg)
244 {
245 Arg larg;
246
247 larg.f = usedfontsize + arg->f;
248 zoomabs(&larg);
249 }
250
251 void
252 zoomabs(const Arg *arg)
253 {
254 xunloadfonts();
255 xloadfonts(usedfont, arg->f);
256 cresize(0, 0);
257 ttyresize(win.tw, win.th);
258 redraw();
259 xhints();
260 }
261
262 void
263 zoomreset(const Arg *arg)
264 {
265 Arg larg;
266
267 if (defaultfontsize > 0) {
268 larg.f = defaultfontsize;
269 zoomabs(&larg);
270 }
271 }
272
273 int
274 x2col(int x)
275 {
276 x -= borderpx;
277 x /= win.cw;
278
279 return LIMIT(x, 0, term.col-1);
280 }
281
282 int
283 y2row(int y)
284 {
285 y -= borderpx;
286 y /= win.ch;
287
288 return LIMIT(y, 0, term.row-1);
289 }
290
291 void
292 getbuttoninfo(XEvent *e)
293 {
294 int type;
295 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
296
297 sel.alt = IS_SET(MODE_ALTSCREEN);
298
299 sel.oe.x = x2col(e->xbutton.x);
300 sel.oe.y = y2row(e->xbutton.y);
301 selnormalize();
302
303 sel.type = SEL_REGULAR;
304 for (type = 1; type < selmaskslen; ++type) {
305 if (match(selmasks[type], state)) {
306 sel.type = type;
307 break;
308 }
309 }
310 }
311
312 void
313 mousereport(XEvent *e)
314 {
315 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
316 button = e->xbutton.button, state = e->xbutton.state,
317 len;
318 char buf[40];
319 static int ox, oy;
320
321 /* from urxvt */
322 if (e->xbutton.type == MotionNotify) {
323 if (x == ox && y == oy)
324 return;
325 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
326 return;
327 /* MOUSE_MOTION: no reporting if no button is pressed */
328 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
329 return;
330
331 button = oldbutton + 32;
332 ox = x;
333 oy = y;
334 } else {
335 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
336 button = 3;
337 } else {
338 button -= Button1;
339 if (button >= 3)
340 button += 64 - 3;
341 }
342 if (e->xbutton.type == ButtonPress) {
343 oldbutton = button;
344 ox = x;
345 oy = y;
346 } else if (e->xbutton.type == ButtonRelease) {
347 oldbutton = 3;
348 /* MODE_MOUSEX10: no button release reporting */
349 if (IS_SET(MODE_MOUSEX10))
350 return;
351 if (button == 64 || button == 65)
352 return;
353 }
354 }
355
356 if (!IS_SET(MODE_MOUSEX10)) {
357 button += ((state & ShiftMask ) ? 4 : 0)
358 + ((state & Mod4Mask ) ? 8 : 0)
359 + ((state & ControlMask) ? 16 : 0);
360 }
361
362 if (IS_SET(MODE_MOUSESGR)) {
363 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
364 button, x+1, y+1,
365 e->xbutton.type == ButtonRelease ? 'm' : 'M');
366 } else if (x < 223 && y < 223) {
367 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
368 32+button, 32+x+1, 32+y+1);
369 } else {
370 return;
371 }
372
373 ttywrite(buf, len);
374 }
375
376 void
377 bpress(XEvent *e)
378 {
379 struct timespec now;
380 MouseShortcut *ms;
381
382 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
383 mousereport(e);
384 return;
385 }
386
387 for (ms = mshortcuts; ms < mshortcuts + mshortcutslen; ms++) {
388 if (e->xbutton.button == ms->b
389 && match(ms->mask, e->xbutton.state)) {
390 ttysend(ms->s, strlen(ms->s));
391 return;
392 }
393 }
394
395 if (e->xbutton.button == Button1) {
396 clock_gettime(CLOCK_MONOTONIC, &now);
397
398 /* Clear previous selection, logically and visually. */
399 selclear_(NULL);
400 sel.mode = SEL_EMPTY;
401 sel.type = SEL_REGULAR;
402 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
403 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
404
405 /*
406 * If the user clicks below predefined timeouts specific
407 * snapping behaviour is exposed.
408 */
409 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
410 sel.snap = SNAP_LINE;
411 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
412 sel.snap = SNAP_WORD;
413 } else {
414 sel.snap = 0;
415 }
416 selnormalize();
417
418 if (sel.snap != 0)
419 sel.mode = SEL_READY;
420 tsetdirt(sel.nb.y, sel.ne.y);
421 sel.tclick2 = sel.tclick1;
422 sel.tclick1 = now;
423 }
424 }
425
426 void
427 selcopy(Time t)
428 {
429 xsetsel(getsel(), t);
430 }
431
432 void
433 propnotify(XEvent *e)
434 {
435 XPropertyEvent *xpev;
436 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
437
438 xpev = &e->xproperty;
439 if (xpev->state == PropertyNewValue &&
440 (xpev->atom == XA_PRIMARY ||
441 xpev->atom == clipboard)) {
442 selnotify(e);
443 }
444 }
445
446 void
447 selnotify(XEvent *e)
448 {
449 ulong nitems, ofs, rem;
450 int format;
451 uchar *data, *last, *repl;
452 Atom type, incratom, property;
453
454 incratom = XInternAtom(xw.dpy, "INCR", 0);
455
456 ofs = 0;
457 if (e->type == SelectionNotify) {
458 property = e->xselection.property;
459 } else if(e->type == PropertyNotify) {
460 property = e->xproperty.atom;
461 } else {
462 return;
463 }
464 if (property == None)
465 return;
466
467 do {
468 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
469 BUFSIZ/4, False, AnyPropertyType,
470 &type, &format, &nitems, &rem,
471 &data)) {
472 fprintf(stderr, "Clipboard allocation failed\n");
473 return;
474 }
475
476 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
477 /*
478 * If there is some PropertyNotify with no data, then
479 * this is the signal of the selection owner that all
480 * data has been transferred. We won't need to receive
481 * PropertyNotify events anymore.
482 */
483 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
484 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
485 &xw.attrs);
486 }
487
488 if (type == incratom) {
489 /*
490 * Activate the PropertyNotify events so we receive
491 * when the selection owner does send us the next
492 * chunk of data.
493 */
494 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
495 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
496 &xw.attrs);
497
498 /*
499 * Deleting the property is the transfer start signal.
500 */
501 XDeleteProperty(xw.dpy, xw.win, (int)property);
502 continue;
503 }
504
505 /*
506 * As seen in getsel:
507 * Line endings are inconsistent in the terminal and GUI world
508 * copy and pasting. When receiving some selection data,
509 * replace all '\n' with '\r'.
510 * FIXME: Fix the computer world.
511 */
512 repl = data;
513 last = data + nitems * format / 8;
514 while ((repl = memchr(repl, '\n', last - repl))) {
515 *repl++ = '\r';
516 }
517
518 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
519 ttywrite("\033[200~", 6);
520 ttysend((char *)data, nitems * format / 8);
521 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
522 ttywrite("\033[201~", 6);
523 XFree(data);
524 /* number of 32-bit chunks returned */
525 ofs += nitems * format / 32;
526 } while (rem > 0);
527
528 /*
529 * Deleting the property again tells the selection owner to send the
530 * next data chunk in the property.
531 */
532 XDeleteProperty(xw.dpy, xw.win, (int)property);
533 }
534
535 void
536 xclipcopy(void)
537 {
538 clipcopy(NULL);
539 }
540
541 void
542 selclear_(XEvent *e)
543 {
544 selclear();
545 }
546
547 void
548 selrequest(XEvent *e)
549 {
550 XSelectionRequestEvent *xsre;
551 XSelectionEvent xev;
552 Atom xa_targets, string, clipboard;
553 char *seltext;
554
555 xsre = (XSelectionRequestEvent *) e;
556 xev.type = SelectionNotify;
557 xev.requestor = xsre->requestor;
558 xev.selection = xsre->selection;
559 xev.target = xsre->target;
560 xev.time = xsre->time;
561 if (xsre->property == None)
562 xsre->property = xsre->target;
563
564 /* reject */
565 xev.property = None;
566
567 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
568 if (xsre->target == xa_targets) {
569 /* respond with the supported type */
570 string = xsel.xtarget;
571 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
572 XA_ATOM, 32, PropModeReplace,
573 (uchar *) &string, 1);
574 xev.property = xsre->property;
575 } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
576 /*
577 * xith XA_STRING non ascii characters may be incorrect in the
578 * requestor. It is not our problem, use utf8.
579 */
580 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
581 if (xsre->selection == XA_PRIMARY) {
582 seltext = sel.primary;
583 } else if (xsre->selection == clipboard) {
584 seltext = sel.clipboard;
585 } else {
586 fprintf(stderr,
587 "Unhandled clipboard selection 0x%lx\n",
588 xsre->selection);
589 return;
590 }
591 if (seltext != NULL) {
592 XChangeProperty(xsre->display, xsre->requestor,
593 xsre->property, xsre->target,
594 8, PropModeReplace,
595 (uchar *)seltext, strlen(seltext));
596 xev.property = xsre->property;
597 }
598 }
599
600 /* all done, send a notification to the listener */
601 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
602 fprintf(stderr, "Error sending SelectionNotify event\n");
603 }
604
605 void
606 xsetsel(char *str, Time t)
607 {
608 free(sel.primary);
609 sel.primary = str;
610
611 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
612 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
613 selclear_(NULL);
614 }
615
616 void
617 brelease(XEvent *e)
618 {
619 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
620 mousereport(e);
621 return;
622 }
623
624 if (e->xbutton.button == Button2) {
625 selpaste(NULL);
626 } else if (e->xbutton.button == Button1) {
627 if (sel.mode == SEL_READY) {
628 getbuttoninfo(e);
629 selcopy(e->xbutton.time);
630 } else
631 selclear_(NULL);
632 sel.mode = SEL_IDLE;
633 tsetdirt(sel.nb.y, sel.ne.y);
634 }
635 }
636
637 void
638 bmotion(XEvent *e)
639 {
640 int oldey, oldex, oldsby, oldsey;
641
642 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
643 mousereport(e);
644 return;
645 }
646
647 if (!sel.mode)
648 return;
649
650 sel.mode = SEL_READY;
651 oldey = sel.oe.y;
652 oldex = sel.oe.x;
653 oldsby = sel.nb.y;
654 oldsey = sel.ne.y;
655 getbuttoninfo(e);
656
657 if (oldey != sel.oe.y || oldex != sel.oe.x)
658 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
659 }
660
661 void
662 cresize(int width, int height)
663 {
664 int col, row;
665
666 if (width != 0)
667 win.w = width;
668 if (height != 0)
669 win.h = height;
670
671 col = (win.w - 2 * borderpx) / win.cw;
672 row = (win.h - 2 * borderpx) / win.ch;
673
674 tresize(col, row);
675 xresize(col, row);
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(colornamelen, 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 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
1109 if (xsel.xtarget == None)
1110 xsel.xtarget = XA_STRING;
1111 }
1112
1113 int
1114 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
1115 {
1116 float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
1117 ushort mode, prevmode = USHRT_MAX;
1118 Font *font = &dc.font;
1119 int frcflags = FRC_NORMAL;
1120 float runewidth = win.cw;
1121 Rune rune;
1122 FT_UInt glyphidx;
1123 FcResult fcres;
1124 FcPattern *fcpattern, *fontpattern;
1125 FcFontSet *fcsets[] = { NULL };
1126 FcCharSet *fccharset;
1127 int i, f, numspecs = 0;
1128
1129 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1130 /* Fetch rune and mode for current glyph. */
1131 rune = glyphs[i].u;
1132 mode = glyphs[i].mode;
1133
1134 /* Skip dummy wide-character spacing. */
1135 if (mode == ATTR_WDUMMY)
1136 continue;
1137
1138 /* Determine font for glyph if different from previous glyph. */
1139 if (prevmode != mode) {
1140 prevmode = mode;
1141 font = &dc.font;
1142 frcflags = FRC_NORMAL;
1143 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1144 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1145 font = &dc.ibfont;
1146 frcflags = FRC_ITALICBOLD;
1147 } else if (mode & ATTR_ITALIC) {
1148 font = &dc.ifont;
1149 frcflags = FRC_ITALIC;
1150 } else if (mode & ATTR_BOLD) {
1151 font = &dc.bfont;
1152 frcflags = FRC_BOLD;
1153 }
1154 yp = winy + font->ascent;
1155 }
1156
1157 /* Lookup character index with default font. */
1158 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1159 if (glyphidx) {
1160 specs[numspecs].font = font->match;
1161 specs[numspecs].glyph = glyphidx;
1162 specs[numspecs].x = (short)xp;
1163 specs[numspecs].y = (short)yp;
1164 xp += runewidth;
1165 numspecs++;
1166 continue;
1167 }
1168
1169 /* Fallback on font cache, search the font cache for match. */
1170 for (f = 0; f < frclen; f++) {
1171 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1172 /* Everything correct. */
1173 if (glyphidx && frc[f].flags == frcflags)
1174 break;
1175 /* We got a default font for a not found glyph. */
1176 if (!glyphidx && frc[f].flags == frcflags
1177 && frc[f].unicodep == rune) {
1178 break;
1179 }
1180 }
1181
1182 /* Nothing was found. Use fontconfig to find matching font. */
1183 if (f >= frclen) {
1184 if (!font->set)
1185 font->set = FcFontSort(0, font->pattern,
1186 1, 0, &fcres);
1187 fcsets[0] = font->set;
1188
1189 /*
1190 * Nothing was found in the cache. Now use
1191 * some dozen of Fontconfig calls to get the
1192 * font for one single character.
1193 *
1194 * Xft and fontconfig are design failures.
1195 */
1196 fcpattern = FcPatternDuplicate(font->pattern);
1197 fccharset = FcCharSetCreate();
1198
1199 FcCharSetAddChar(fccharset, rune);
1200 FcPatternAddCharSet(fcpattern, FC_CHARSET,
1201 fccharset);
1202 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1203
1204 FcConfigSubstitute(0, fcpattern,
1205 FcMatchPattern);
1206 FcDefaultSubstitute(fcpattern);
1207
1208 fontpattern = FcFontSetMatch(0, fcsets, 1,
1209 fcpattern, &fcres);
1210
1211 /*
1212 * Overwrite or create the new cache entry.
1213 */
1214 if (frclen >= LEN(frc)) {
1215 frclen = LEN(frc) - 1;
1216 XftFontClose(xw.dpy, frc[frclen].font);
1217 frc[frclen].unicodep = 0;
1218 }
1219
1220 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1221 fontpattern);
1222 if (!frc[frclen].font)
1223 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1224 strerror(errno));
1225 frc[frclen].flags = frcflags;
1226 frc[frclen].unicodep = rune;
1227
1228 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1229
1230 f = frclen;
1231 frclen++;
1232
1233 FcPatternDestroy(fcpattern);
1234 FcCharSetDestroy(fccharset);
1235 }
1236
1237 specs[numspecs].font = frc[f].font;
1238 specs[numspecs].glyph = glyphidx;
1239 specs[numspecs].x = (short)xp;
1240 specs[numspecs].y = (short)yp;
1241 xp += runewidth;
1242 numspecs++;
1243 }
1244
1245 return numspecs;
1246 }
1247
1248 void
1249 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1250 {
1251 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1252 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1253 width = charlen * win.cw;
1254 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1255 XRenderColor colfg, colbg;
1256 XRectangle r;
1257
1258 /* Fallback on color display for attributes not supported by the font */
1259 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1260 if (dc.ibfont.badslant || dc.ibfont.badweight)
1261 base.fg = defaultattr;
1262 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1263 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1264 base.fg = defaultattr;
1265 }
1266
1267 if (IS_TRUECOL(base.fg)) {
1268 colfg.alpha = 0xffff;
1269 colfg.red = TRUERED(base.fg);
1270 colfg.green = TRUEGREEN(base.fg);
1271 colfg.blue = TRUEBLUE(base.fg);
1272 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1273 fg = &truefg;
1274 } else {
1275 fg = &dc.col[base.fg];
1276 }
1277
1278 if (IS_TRUECOL(base.bg)) {
1279 colbg.alpha = 0xffff;
1280 colbg.green = TRUEGREEN(base.bg);
1281 colbg.red = TRUERED(base.bg);
1282 colbg.blue = TRUEBLUE(base.bg);
1283 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1284 bg = &truebg;
1285 } else {
1286 bg = &dc.col[base.bg];
1287 }
1288
1289 /* Change basic system colors [0-7] to bright system colors [8-15] */
1290 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1291 fg = &dc.col[base.fg + 8];
1292
1293 if (IS_SET(MODE_REVERSE)) {
1294 if (fg == &dc.col[defaultfg]) {
1295 fg = &dc.col[defaultbg];
1296 } else {
1297 colfg.red = ~fg->color.red;
1298 colfg.green = ~fg->color.green;
1299 colfg.blue = ~fg->color.blue;
1300 colfg.alpha = fg->color.alpha;
1301 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1302 &revfg);
1303 fg = &revfg;
1304 }
1305
1306 if (bg == &dc.col[defaultbg]) {
1307 bg = &dc.col[defaultfg];
1308 } else {
1309 colbg.red = ~bg->color.red;
1310 colbg.green = ~bg->color.green;
1311 colbg.blue = ~bg->color.blue;
1312 colbg.alpha = bg->color.alpha;
1313 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1314 &revbg);
1315 bg = &revbg;
1316 }
1317 }
1318
1319 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1320 colfg.red = fg->color.red / 2;
1321 colfg.green = fg->color.green / 2;
1322 colfg.blue = fg->color.blue / 2;
1323 colfg.alpha = fg->color.alpha;
1324 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1325 fg = &revfg;
1326 }
1327
1328
1329 if (base.mode & ATTR_REVERSE) {
1330 temp = fg;
1331 fg = bg;
1332 bg = temp;
1333 }
1334
1335 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
1336 fg = bg;
1337
1338 if (base.mode & ATTR_INVISIBLE)
1339 fg = bg;
1340
1341 /* Intelligent cleaning up of the borders. */
1342 if (x == 0) {
1343 xclear(0, (y == 0)? 0 : winy, borderpx,
1344 winy + win.ch + ((y >= term.row-1)? win.h : 0));
1345 }
1346 if (x + charlen >= term.col) {
1347 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1348 ((y >= term.row-1)? win.h : (winy + win.ch)));
1349 }
1350 if (y == 0)
1351 xclear(winx, 0, winx + width, borderpx);
1352 if (y == term.row-1)
1353 xclear(winx, winy + win.ch, winx + width, win.h);
1354
1355 /* Clean up the region we want to draw to. */
1356 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1357
1358 /* Set the clip region because Xft is sometimes dirty. */
1359 r.x = 0;
1360 r.y = 0;
1361 r.height = win.ch;
1362 r.width = width;
1363 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1364
1365 /* Render the glyphs. */
1366 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1367
1368 /* Render underline and strikethrough. */
1369 if (base.mode & ATTR_UNDERLINE) {
1370 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
1371 width, 1);
1372 }
1373
1374 if (base.mode & ATTR_STRUCK) {
1375 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
1376 width, 1);
1377 }
1378
1379 /* Reset clip to none. */
1380 XftDrawSetClip(xw.draw, 0);
1381 }
1382
1383 void
1384 xdrawglyph(Glyph g, int x, int y)
1385 {
1386 int numspecs;
1387 XftGlyphFontSpec spec;
1388
1389 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1390 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1391 }
1392
1393 void
1394 xdrawcursor(void)
1395 {
1396 static int oldx = 0, oldy = 0;
1397 int curx;
1398 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
1399 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
1400 Color drawcol;
1401
1402 LIMIT(oldx, 0, term.col-1);
1403 LIMIT(oldy, 0, term.row-1);
1404
1405 curx = term.c.x;
1406
1407 /* adjust position if in dummy */
1408 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
1409 oldx--;
1410 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
1411 curx--;
1412
1413 /* remove the old cursor */
1414 og = term.line[oldy][oldx];
1415 if (ena_sel && selected(oldx, oldy))
1416 og.mode ^= ATTR_REVERSE;
1417 xdrawglyph(og, oldx, oldy);
1418
1419 g.u = term.line[term.c.y][term.c.x].u;
1420 g.mode |= term.line[term.c.y][term.c.x].mode &
1421 (ATTR_BOLD | ATTR_ITALIC | ATTR_UNDERLINE | ATTR_STRUCK);
1422
1423 /*
1424 * Select the right color for the right mode.
1425 */
1426 if (IS_SET(MODE_REVERSE)) {
1427 g.mode |= ATTR_REVERSE;
1428 g.bg = defaultfg;
1429 if (ena_sel && selected(term.c.x, term.c.y)) {
1430 drawcol = dc.col[defaultcs];
1431 g.fg = defaultrcs;
1432 } else {
1433 drawcol = dc.col[defaultrcs];
1434 g.fg = defaultcs;
1435 }
1436 } else {
1437 if (ena_sel && selected(term.c.x, term.c.y)) {
1438 drawcol = dc.col[defaultrcs];
1439 g.fg = defaultfg;
1440 g.bg = defaultrcs;
1441 } else {
1442 drawcol = dc.col[defaultcs];
1443 }
1444 }
1445
1446 if (IS_SET(MODE_HIDE))
1447 return;
1448
1449 /* draw the new one */
1450 if (win.state & WIN_FOCUSED) {
1451 switch (win.cursor) {
1452 case 7: /* st extension: snowman */
1453 utf8decode("☃", &g.u, UTF_SIZ);
1454 case 0: /* Blinking Block */
1455 case 1: /* Blinking Block (Default) */
1456 case 2: /* Steady Block */
1457 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
1458 xdrawglyph(g, term.c.x, term.c.y);
1459 break;
1460 case 3: /* Blinking Underline */
1461 case 4: /* Steady Underline */
1462 XftDrawRect(xw.draw, &drawcol,
1463 borderpx + curx * win.cw,
1464 borderpx + (term.c.y + 1) * win.ch - \
1465 cursorthickness,
1466 win.cw, cursorthickness);
1467 break;
1468 case 5: /* Blinking bar */
1469 case 6: /* Steady bar */
1470 XftDrawRect(xw.draw, &drawcol,
1471 borderpx + curx * win.cw,
1472 borderpx + term.c.y * win.ch,
1473 cursorthickness, win.ch);
1474 break;
1475 }
1476 } else {
1477 XftDrawRect(xw.draw, &drawcol,
1478 borderpx + curx * win.cw,
1479 borderpx + term.c.y * win.ch,
1480 win.cw - 1, 1);
1481 XftDrawRect(xw.draw, &drawcol,
1482 borderpx + curx * win.cw,
1483 borderpx + term.c.y * win.ch,
1484 1, win.ch - 1);
1485 XftDrawRect(xw.draw, &drawcol,
1486 borderpx + (curx + 1) * win.cw - 1,
1487 borderpx + term.c.y * win.ch,
1488 1, win.ch - 1);
1489 XftDrawRect(xw.draw, &drawcol,
1490 borderpx + curx * win.cw,
1491 borderpx + (term.c.y + 1) * win.ch - 1,
1492 win.cw, 1);
1493 }
1494 oldx = curx, oldy = term.c.y;
1495 }
1496
1497 void
1498 xsetenv(void)
1499 {
1500 char buf[sizeof(long) * 8 + 1];
1501
1502 snprintf(buf, sizeof(buf), "%lu", xw.win);
1503 setenv("WINDOWID", buf, 1);
1504 }
1505
1506 void
1507 xsettitle(char *p)
1508 {
1509 XTextProperty prop;
1510 DEFAULT(p, "st");
1511
1512 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1513 &prop);
1514 XSetWMName(xw.dpy, xw.win, &prop);
1515 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1516 XFree(prop.value);
1517 }
1518
1519 void
1520 draw(void)
1521 {
1522 drawregion(0, 0, term.col, term.row);
1523 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1524 win.h, 0, 0);
1525 XSetForeground(xw.dpy, dc.gc,
1526 dc.col[IS_SET(MODE_REVERSE)?
1527 defaultfg : defaultbg].pixel);
1528 }
1529
1530 void
1531 drawregion(int x1, int y1, int x2, int y2)
1532 {
1533 int i, x, y, ox, numspecs;
1534 Glyph base, new;
1535 XftGlyphFontSpec *specs;
1536 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
1537
1538 if (!(win.state & WIN_VISIBLE))
1539 return;
1540
1541 for (y = y1; y < y2; y++) {
1542 if (!term.dirty[y])
1543 continue;
1544
1545 term.dirty[y] = 0;
1546
1547 specs = xw.specbuf;
1548 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
1549
1550 i = ox = 0;
1551 for (x = x1; x < x2 && i < numspecs; x++) {
1552 new = term.line[y][x];
1553 if (new.mode == ATTR_WDUMMY)
1554 continue;
1555 if (ena_sel && selected(x, y))
1556 new.mode ^= ATTR_REVERSE;
1557 if (i > 0 && ATTRCMP(base, new)) {
1558 xdrawglyphfontspecs(specs, base, i, ox, y);
1559 specs += i;
1560 numspecs -= i;
1561 i = 0;
1562 }
1563 if (i == 0) {
1564 ox = x;
1565 base = new;
1566 }
1567 i++;
1568 }
1569 if (i > 0)
1570 xdrawglyphfontspecs(specs, base, i, ox, y);
1571 }
1572 xdrawcursor();
1573 }
1574
1575 void
1576 expose(XEvent *ev)
1577 {
1578 redraw();
1579 }
1580
1581 void
1582 visibility(XEvent *ev)
1583 {
1584 XVisibilityEvent *e = &ev->xvisibility;
1585
1586 MODBIT(win.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
1587 }
1588
1589 void
1590 unmap(XEvent *ev)
1591 {
1592 win.state &= ~WIN_VISIBLE;
1593 }
1594
1595 void
1596 xsetpointermotion(int set)
1597 {
1598 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1599 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1600 }
1601
1602 void
1603 xseturgency(int add)
1604 {
1605 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1606
1607 MODBIT(h->flags, add, XUrgencyHint);
1608 XSetWMHints(xw.dpy, xw.win, h);
1609 XFree(h);
1610 }
1611
1612 void
1613 xbell(void)
1614 {
1615 if (!(win.state & WIN_FOCUSED))
1616 xseturgency(1);
1617 if (bellvolume)
1618 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1619 }
1620
1621 void
1622 focus(XEvent *ev)
1623 {
1624 XFocusChangeEvent *e = &ev->xfocus;
1625
1626 if (e->mode == NotifyGrab)
1627 return;
1628
1629 if (ev->type == FocusIn) {
1630 XSetICFocus(xw.xic);
1631 win.state |= WIN_FOCUSED;
1632 xseturgency(0);
1633 if (IS_SET(MODE_FOCUS))
1634 ttywrite("\033[I", 3);
1635 } else {
1636 XUnsetICFocus(xw.xic);
1637 win.state &= ~WIN_FOCUSED;
1638 if (IS_SET(MODE_FOCUS))
1639 ttywrite("\033[O", 3);
1640 }
1641 }
1642
1643 int
1644 match(uint mask, uint state)
1645 {
1646 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1647 }
1648
1649 char*
1650 kmap(KeySym k, uint state)
1651 {
1652 Key *kp;
1653 int i;
1654
1655 /* Check for mapped keys out of X11 function keys. */
1656 for (i = 0; i < mappedkeyslen; i++) {
1657 if (mappedkeys[i] == k)
1658 break;
1659 }
1660 if (i == mappedkeyslen) {
1661 if ((k & 0xFFFF) < 0xFD00)
1662 return NULL;
1663 }
1664
1665 for (kp = key; kp < key + keyslen; kp++) {
1666 if (kp->k != k)
1667 continue;
1668
1669 if (!match(kp->mask, state))
1670 continue;
1671
1672 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1673 continue;
1674 if (term.numlock && kp->appkey == 2)
1675 continue;
1676
1677 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1678 continue;
1679
1680 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
1681 continue;
1682
1683 return kp->s;
1684 }
1685
1686 return NULL;
1687 }
1688
1689 void
1690 kpress(XEvent *ev)
1691 {
1692 XKeyEvent *e = &ev->xkey;
1693 KeySym ksym;
1694 char buf[32], *customkey;
1695 int len;
1696 Rune c;
1697 Status status;
1698 Shortcut *bp;
1699
1700 if (IS_SET(MODE_KBDLOCK))
1701 return;
1702
1703 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
1704 /* 1. shortcuts */
1705 for (bp = shortcuts; bp < shortcuts + shortcutslen; bp++) {
1706 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1707 bp->func(&(bp->arg));
1708 return;
1709 }
1710 }
1711
1712 /* 2. custom keys from config.h */
1713 if ((customkey = kmap(ksym, e->state))) {
1714 ttysend(customkey, strlen(customkey));
1715 return;
1716 }
1717
1718 /* 3. composed string from input method */
1719 if (len == 0)
1720 return;
1721 if (len == 1 && e->state & Mod1Mask) {
1722 if (IS_SET(MODE_8BIT)) {
1723 if (*buf < 0177) {
1724 c = *buf | 0x80;
1725 len = utf8encode(c, buf);
1726 }
1727 } else {
1728 buf[1] = buf[0];
1729 buf[0] = '\033';
1730 len = 2;
1731 }
1732 }
1733 ttysend(buf, len);
1734 }
1735
1736
1737 void
1738 cmessage(XEvent *e)
1739 {
1740 /*
1741 * See xembed specs
1742 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1743 */
1744 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1745 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1746 win.state |= WIN_FOCUSED;
1747 xseturgency(0);
1748 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1749 win.state &= ~WIN_FOCUSED;
1750 }
1751 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1752 /* Send SIGHUP to shell */
1753 kill(pid, SIGHUP);
1754 exit(0);
1755 }
1756 }
1757
1758 void
1759 resize(XEvent *e)
1760 {
1761 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1762 return;
1763
1764 cresize(e->xconfigure.width, e->xconfigure.height);
1765 ttyresize(win.tw, win.th);
1766 }
1767
1768 void
1769 run(void)
1770 {
1771 XEvent ev;
1772 int w = win.w, h = win.h;
1773 fd_set rfd;
1774 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
1775 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
1776 long deltatime;
1777
1778 /* Waiting for window mapping */
1779 do {
1780 XNextEvent(xw.dpy, &ev);
1781 /*
1782 * This XFilterEvent call is required because of XOpenIM. It
1783 * does filter out the key event and some client message for
1784 * the input method too.
1785 */
1786 if (XFilterEvent(&ev, None))
1787 continue;
1788 if (ev.type == ConfigureNotify) {
1789 w = ev.xconfigure.width;
1790 h = ev.xconfigure.height;
1791 }
1792 } while (ev.type != MapNotify);
1793
1794 cresize(w, h);
1795 ttynew(opt_line, opt_io, opt_cmd);
1796 ttyresize(win.tw, win.th);
1797
1798 clock_gettime(CLOCK_MONOTONIC, &last);
1799 lastblink = last;
1800
1801 for (xev = actionfps;;) {
1802 FD_ZERO(&rfd);
1803 FD_SET(cmdfd, &rfd);
1804 FD_SET(xfd, &rfd);
1805
1806 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1807 if (errno == EINTR)
1808 continue;
1809 die("select failed: %s\n", strerror(errno));
1810 }
1811 if (FD_ISSET(cmdfd, &rfd)) {
1812 ttyread();
1813 if (blinktimeout) {
1814 blinkset = tattrset(ATTR_BLINK);
1815 if (!blinkset)
1816 MODBIT(term.mode, 0, MODE_BLINK);
1817 }
1818 }
1819
1820 if (FD_ISSET(xfd, &rfd))
1821 xev = actionfps;
1822
1823 clock_gettime(CLOCK_MONOTONIC, &now);
1824 drawtimeout.tv_sec = 0;
1825 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
1826 tv = &drawtimeout;
1827
1828 dodraw = 0;
1829 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
1830 tsetdirtattr(ATTR_BLINK);
1831 term.mode ^= MODE_BLINK;
1832 lastblink = now;
1833 dodraw = 1;
1834 }
1835 deltatime = TIMEDIFF(now, last);
1836 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
1837 dodraw = 1;
1838 last = now;
1839 }
1840
1841 if (dodraw) {
1842 while (XPending(xw.dpy)) {
1843 XNextEvent(xw.dpy, &ev);
1844 if (XFilterEvent(&ev, None))
1845 continue;
1846 if (handler[ev.type])
1847 (handler[ev.type])(&ev);
1848 }
1849
1850 draw();
1851 XFlush(xw.dpy);
1852
1853 if (xev && !FD_ISSET(xfd, &rfd))
1854 xev--;
1855 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
1856 if (blinkset) {
1857 if (TIMEDIFF(now, lastblink) \
1858 > blinktimeout) {
1859 drawtimeout.tv_nsec = 1000;
1860 } else {
1861 drawtimeout.tv_nsec = (1E6 * \
1862 (blinktimeout - \
1863 TIMEDIFF(now,
1864 lastblink)));
1865 }
1866 drawtimeout.tv_sec = \
1867 drawtimeout.tv_nsec / 1E9;
1868 drawtimeout.tv_nsec %= (long)1E9;
1869 } else {
1870 tv = NULL;
1871 }
1872 }
1873 }
1874 }
1875 }
1876
1877 void
1878 usage(void)
1879 {
1880 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
1881 " [-n name] [-o file]\n"
1882 " [-T title] [-t title] [-w windowid]"
1883 " [[-e] command [args ...]]\n"
1884 " %s [-aiv] [-c class] [-f font] [-g geometry]"
1885 " [-n name] [-o file]\n"
1886 " [-T title] [-t title] [-w windowid] -l line"
1887 " [stty_args ...]\n", argv0, argv0);
1888 }
1889
1890 int
1891 main(int argc, char *argv[])
1892 {
1893 xw.l = xw.t = 0;
1894 xw.isfixed = False;
1895 win.cursor = cursorshape;
1896
1897 ARGBEGIN {
1898 case 'a':
1899 allowaltscreen = 0;
1900 break;
1901 case 'c':
1902 opt_class = EARGF(usage());
1903 break;
1904 case 'e':
1905 if (argc > 0)
1906 --argc, ++argv;
1907 goto run;
1908 case 'f':
1909 opt_font = EARGF(usage());
1910 break;
1911 case 'g':
1912 xw.gm = XParseGeometry(EARGF(usage()),
1913 &xw.l, &xw.t, &cols, &rows);
1914 break;
1915 case 'i':
1916 xw.isfixed = 1;
1917 break;
1918 case 'o':
1919 opt_io = EARGF(usage());
1920 break;
1921 case 'l':
1922 opt_line = EARGF(usage());
1923 break;
1924 case 'n':
1925 opt_name = EARGF(usage());
1926 break;
1927 case 't':
1928 case 'T':
1929 opt_title = EARGF(usage());
1930 break;
1931 case 'w':
1932 opt_embed = EARGF(usage());
1933 break;
1934 case 'v':
1935 die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
1936 break;
1937 default:
1938 usage();
1939 } ARGEND;
1940
1941 run:
1942 if (argc > 0) {
1943 /* eat all remaining arguments */
1944 opt_cmd = argv;
1945 if (!opt_title && !opt_line)
1946 opt_title = basename(xstrdup(argv[0]));
1947 }
1948 setlocale(LC_CTYPE, "");
1949 XSetLocaleModifiers("");
1950 tnew(MAX(cols, 1), MAX(rows, 1));
1951 xinit();
1952 xsetenv();
1953 selinit();
1954 run();
1955
1956 return 0;
1957 }