Xinqi Bao's Git

projects / st.git / blob


ab9593ead339ee991129a86da63728a01576adc1
[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 #include "arg.h"
19
20 #define Glyph Glyph_
21 #define Font Font_
22
23 #include "win.h"
24 #include "st.h"
25
26 /* XEMBED messages */
27 #define XEMBED_FOCUS_IN 4
28 #define XEMBED_FOCUS_OUT 5
29
30 /* macros */
31 #define TRUERED(x) (((x) & 0xff0000) >> 8)
32 #define TRUEGREEN(x) (((x) & 0xff00))
33 #define TRUEBLUE(x) (((x) & 0xff) << 8)
34
35 typedef XftDraw *Draw;
36 typedef XftColor Color;
37
38 /* Purely graphic info */
39 typedef struct {
40 Display *dpy;
41 Colormap cmap;
42 Window win;
43 Drawable buf;
44 Atom xembed, wmdeletewin, netwmname, netwmpid;
45 XIM xim;
46 XIC xic;
47 Draw draw;
48 Visual *vis;
49 XSetWindowAttributes attrs;
50 int scr;
51 int isfixed; /* is fixed geometry? */
52 int l, t; /* left and top offset */
53 int gm; /* geometry mask */
54 } XWindow;
55
56 typedef struct {
57 Atom xtarget;
58 } XSelection;
59
60 /* Font structure */
61 typedef struct {
62 int height;
63 int width;
64 int ascent;
65 int descent;
66 int badslant;
67 int badweight;
68 short lbearing;
69 short rbearing;
70 XftFont *match;
71 FcFontSet *set;
72 FcPattern *pattern;
73 } Font;
74
75 /* Drawing Context */
76 typedef struct {
77 Color *col;
78 size_t collen;
79 Font font, bfont, ifont, ibfont;
80 GC gc;
81 } DC;
82
83 static inline ushort sixd_to_16bit(int);
84 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
85 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
86 static void xdrawglyph(Glyph, int, int);
87 static void xclear(int, int, int, int);
88 static void xdrawcursor(void);
89 static int xgeommasktogravity(int);
90 static int xloadfont(Font *, FcPattern *);
91 static void xunloadfont(Font *);
92
93 static void expose(XEvent *);
94 static void visibility(XEvent *);
95 static void unmap(XEvent *);
96 static void kpress(XEvent *);
97 static void cmessage(XEvent *);
98 static void resize(XEvent *);
99 static void focus(XEvent *);
100 static void brelease(XEvent *);
101 static void bpress(XEvent *);
102 static void bmotion(XEvent *);
103 static void propnotify(XEvent *);
104 static void selnotify(XEvent *);
105 static void selclear_(XEvent *);
106 static void selrequest(XEvent *);
107
108 static void selcopy(Time);
109 static void getbuttoninfo(XEvent *);
110 static void mousereport(XEvent *);
111
112 static void (*handler[LASTEvent])(XEvent *) = {
113 [KeyPress] = kpress,
114 [ClientMessage] = cmessage,
115 [ConfigureNotify] = resize,
116 [VisibilityNotify] = visibility,
117 [UnmapNotify] = unmap,
118 [Expose] = expose,
119 [FocusIn] = focus,
120 [FocusOut] = focus,
121 [MotionNotify] = bmotion,
122 [ButtonPress] = bpress,
123 [ButtonRelease] = brelease,
124 /*
125 * Uncomment if you want the selection to disappear when you select something
126 * different in another window.
127 */
128 /* [SelectionClear] = selclear_, */
129 [SelectionNotify] = selnotify,
130 /*
131 * PropertyNotify is only turned on when there is some INCR transfer happening
132 * for the selection retrieval.
133 */
134 [PropertyNotify] = propnotify,
135 [SelectionRequest] = selrequest,
136 };
137
138 /* Globals */
139 static DC dc;
140 static XWindow xw;
141 static XSelection xsel;
142
143 /* Font Ring Cache */
144 enum {
145 FRC_NORMAL,
146 FRC_ITALIC,
147 FRC_BOLD,
148 FRC_ITALICBOLD
149 };
150
151 typedef struct {
152 XftFont *font;
153 int flags;
154 Rune unicodep;
155 } Fontcache;
156
157 /* Fontcache is an array now. A new font will be appended to the array. */
158 static Fontcache frc[16];
159 static int frclen = 0;
160
161 void
162 getbuttoninfo(XEvent *e)
163 {
164 int type;
165 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
166
167 sel.alt = IS_SET(MODE_ALTSCREEN);
168
169 sel.oe.x = x2col(e->xbutton.x);
170 sel.oe.y = y2row(e->xbutton.y);
171 selnormalize();
172
173 sel.type = SEL_REGULAR;
174 for (type = 1; type < selmaskslen; ++type) {
175 if (match(selmasks[type], state)) {
176 sel.type = type;
177 break;
178 }
179 }
180 }
181
182 void
183 mousereport(XEvent *e)
184 {
185 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
186 button = e->xbutton.button, state = e->xbutton.state,
187 len;
188 char buf[40];
189 static int ox, oy;
190
191 /* from urxvt */
192 if (e->xbutton.type == MotionNotify) {
193 if (x == ox && y == oy)
194 return;
195 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
196 return;
197 /* MOUSE_MOTION: no reporting if no button is pressed */
198 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
199 return;
200
201 button = oldbutton + 32;
202 ox = x;
203 oy = y;
204 } else {
205 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
206 button = 3;
207 } else {
208 button -= Button1;
209 if (button >= 3)
210 button += 64 - 3;
211 }
212 if (e->xbutton.type == ButtonPress) {
213 oldbutton = button;
214 ox = x;
215 oy = y;
216 } else if (e->xbutton.type == ButtonRelease) {
217 oldbutton = 3;
218 /* MODE_MOUSEX10: no button release reporting */
219 if (IS_SET(MODE_MOUSEX10))
220 return;
221 if (button == 64 || button == 65)
222 return;
223 }
224 }
225
226 if (!IS_SET(MODE_MOUSEX10)) {
227 button += ((state & ShiftMask ) ? 4 : 0)
228 + ((state & Mod4Mask ) ? 8 : 0)
229 + ((state & ControlMask) ? 16 : 0);
230 }
231
232 if (IS_SET(MODE_MOUSESGR)) {
233 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
234 button, x+1, y+1,
235 e->xbutton.type == ButtonRelease ? 'm' : 'M');
236 } else if (x < 223 && y < 223) {
237 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
238 32+button, 32+x+1, 32+y+1);
239 } else {
240 return;
241 }
242
243 ttywrite(buf, len);
244 }
245
246 void
247 bpress(XEvent *e)
248 {
249 struct timespec now;
250 MouseShortcut *ms;
251
252 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
253 mousereport(e);
254 return;
255 }
256
257 for (ms = mshortcuts; ms < mshortcuts + mshortcutslen; ms++) {
258 if (e->xbutton.button == ms->b
259 && match(ms->mask, e->xbutton.state)) {
260 ttysend(ms->s, strlen(ms->s));
261 return;
262 }
263 }
264
265 if (e->xbutton.button == Button1) {
266 clock_gettime(CLOCK_MONOTONIC, &now);
267
268 /* Clear previous selection, logically and visually. */
269 selclear_(NULL);
270 sel.mode = SEL_EMPTY;
271 sel.type = SEL_REGULAR;
272 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
273 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
274
275 /*
276 * If the user clicks below predefined timeouts specific
277 * snapping behaviour is exposed.
278 */
279 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
280 sel.snap = SNAP_LINE;
281 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
282 sel.snap = SNAP_WORD;
283 } else {
284 sel.snap = 0;
285 }
286 selnormalize();
287
288 if (sel.snap != 0)
289 sel.mode = SEL_READY;
290 tsetdirt(sel.nb.y, sel.ne.y);
291 sel.tclick2 = sel.tclick1;
292 sel.tclick1 = now;
293 }
294 }
295
296 void
297 selcopy(Time t)
298 {
299 xsetsel(getsel(), t);
300 }
301
302 void
303 propnotify(XEvent *e)
304 {
305 XPropertyEvent *xpev;
306 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
307
308 xpev = &e->xproperty;
309 if (xpev->state == PropertyNewValue &&
310 (xpev->atom == XA_PRIMARY ||
311 xpev->atom == clipboard)) {
312 selnotify(e);
313 }
314 }
315
316 void
317 selnotify(XEvent *e)
318 {
319 ulong nitems, ofs, rem;
320 int format;
321 uchar *data, *last, *repl;
322 Atom type, incratom, property;
323
324 incratom = XInternAtom(xw.dpy, "INCR", 0);
325
326 ofs = 0;
327 if (e->type == SelectionNotify) {
328 property = e->xselection.property;
329 } else if(e->type == PropertyNotify) {
330 property = e->xproperty.atom;
331 } else {
332 return;
333 }
334 if (property == None)
335 return;
336
337 do {
338 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
339 BUFSIZ/4, False, AnyPropertyType,
340 &type, &format, &nitems, &rem,
341 &data)) {
342 fprintf(stderr, "Clipboard allocation failed\n");
343 return;
344 }
345
346 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
347 /*
348 * If there is some PropertyNotify with no data, then
349 * this is the signal of the selection owner that all
350 * data has been transferred. We won't need to receive
351 * PropertyNotify events anymore.
352 */
353 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
354 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
355 &xw.attrs);
356 }
357
358 if (type == incratom) {
359 /*
360 * Activate the PropertyNotify events so we receive
361 * when the selection owner does send us the next
362 * chunk of data.
363 */
364 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
365 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
366 &xw.attrs);
367
368 /*
369 * Deleting the property is the transfer start signal.
370 */
371 XDeleteProperty(xw.dpy, xw.win, (int)property);
372 continue;
373 }
374
375 /*
376 * As seen in getsel:
377 * Line endings are inconsistent in the terminal and GUI world
378 * copy and pasting. When receiving some selection data,
379 * replace all '\n' with '\r'.
380 * FIXME: Fix the computer world.
381 */
382 repl = data;
383 last = data + nitems * format / 8;
384 while ((repl = memchr(repl, '\n', last - repl))) {
385 *repl++ = '\r';
386 }
387
388 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
389 ttywrite("\033[200~", 6);
390 ttysend((char *)data, nitems * format / 8);
391 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
392 ttywrite("\033[201~", 6);
393 XFree(data);
394 /* number of 32-bit chunks returned */
395 ofs += nitems * format / 32;
396 } while (rem > 0);
397
398 /*
399 * Deleting the property again tells the selection owner to send the
400 * next data chunk in the property.
401 */
402 XDeleteProperty(xw.dpy, xw.win, (int)property);
403 }
404
405 void
406 xselpaste(void)
407 {
408 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
409 xw.win, CurrentTime);
410 }
411
412 void
413 xclipcopy(void)
414 {
415 Atom clipboard;
416
417 if (sel.clipboard != NULL)
418 free(sel.clipboard);
419
420 if (sel.primary != NULL) {
421 sel.clipboard = xstrdup(sel.primary);
422 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
423 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
424 }
425 }
426
427 void
428 xclippaste(void)
429 {
430 Atom clipboard;
431
432 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
433 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
434 xw.win, CurrentTime);
435 }
436
437 void
438 selclear_(XEvent *e)
439 {
440 selclear();
441 }
442
443 void
444 selrequest(XEvent *e)
445 {
446 XSelectionRequestEvent *xsre;
447 XSelectionEvent xev;
448 Atom xa_targets, string, clipboard;
449 char *seltext;
450
451 xsre = (XSelectionRequestEvent *) e;
452 xev.type = SelectionNotify;
453 xev.requestor = xsre->requestor;
454 xev.selection = xsre->selection;
455 xev.target = xsre->target;
456 xev.time = xsre->time;
457 if (xsre->property == None)
458 xsre->property = xsre->target;
459
460 /* reject */
461 xev.property = None;
462
463 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
464 if (xsre->target == xa_targets) {
465 /* respond with the supported type */
466 string = xsel.xtarget;
467 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
468 XA_ATOM, 32, PropModeReplace,
469 (uchar *) &string, 1);
470 xev.property = xsre->property;
471 } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
472 /*
473 * xith XA_STRING non ascii characters may be incorrect in the
474 * requestor. It is not our problem, use utf8.
475 */
476 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
477 if (xsre->selection == XA_PRIMARY) {
478 seltext = sel.primary;
479 } else if (xsre->selection == clipboard) {
480 seltext = sel.clipboard;
481 } else {
482 fprintf(stderr,
483 "Unhandled clipboard selection 0x%lx\n",
484 xsre->selection);
485 return;
486 }
487 if (seltext != NULL) {
488 XChangeProperty(xsre->display, xsre->requestor,
489 xsre->property, xsre->target,
490 8, PropModeReplace,
491 (uchar *)seltext, strlen(seltext));
492 xev.property = xsre->property;
493 }
494 }
495
496 /* all done, send a notification to the listener */
497 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
498 fprintf(stderr, "Error sending SelectionNotify event\n");
499 }
500
501 void
502 xsetsel(char *str, Time t)
503 {
504 free(sel.primary);
505 sel.primary = str;
506
507 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
508 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
509 selclear_(NULL);
510 xclipcopy();
511 }
512
513 void
514 brelease(XEvent *e)
515 {
516 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
517 mousereport(e);
518 return;
519 }
520
521 if (e->xbutton.button == Button2) {
522 xselpaste();
523 } else if (e->xbutton.button == Button1) {
524 if (sel.mode == SEL_READY) {
525 getbuttoninfo(e);
526 selcopy(e->xbutton.time);
527 } else
528 selclear_(NULL);
529 sel.mode = SEL_IDLE;
530 tsetdirt(sel.nb.y, sel.ne.y);
531 }
532 }
533
534 void
535 bmotion(XEvent *e)
536 {
537 int oldey, oldex, oldsby, oldsey;
538
539 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
540 mousereport(e);
541 return;
542 }
543
544 if (!sel.mode)
545 return;
546
547 sel.mode = SEL_READY;
548 oldey = sel.oe.y;
549 oldex = sel.oe.x;
550 oldsby = sel.nb.y;
551 oldsey = sel.ne.y;
552 getbuttoninfo(e);
553
554 if (oldey != sel.oe.y || oldex != sel.oe.x)
555 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
556 }
557
558 void
559 xresize(int col, int row)
560 {
561 win.tw = MAX(1, col * win.cw);
562 win.th = MAX(1, row * win.ch);
563
564 XFreePixmap(xw.dpy, xw.buf);
565 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
566 DefaultDepth(xw.dpy, xw.scr));
567 XftDrawChange(xw.draw, xw.buf);
568 xclear(0, 0, win.w, win.h);
569 }
570
571 ushort
572 sixd_to_16bit(int x)
573 {
574 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
575 }
576
577 int
578 xloadcolor(int i, const char *name, Color *ncolor)
579 {
580 XRenderColor color = { .alpha = 0xffff };
581
582 if (!name) {
583 if (BETWEEN(i, 16, 255)) { /* 256 color */
584 if (i < 6*6*6+16) { /* same colors as xterm */
585 color.red = sixd_to_16bit( ((i-16)/36)%6 );
586 color.green = sixd_to_16bit( ((i-16)/6) %6 );
587 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
588 } else { /* greyscale */
589 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
590 color.green = color.blue = color.red;
591 }
592 return XftColorAllocValue(xw.dpy, xw.vis,
593 xw.cmap, &color, ncolor);
594 } else
595 name = colorname[i];
596 }
597
598 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
599 }
600
601 void
602 xloadcols(void)
603 {
604 int i;
605 static int loaded;
606 Color *cp;
607
608 dc.collen = MAX(colornamelen, 256);
609 dc.col = xmalloc(dc.collen * sizeof(Color));
610
611 if (loaded) {
612 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
613 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
614 }
615
616 for (i = 0; i < dc.collen; i++)
617 if (!xloadcolor(i, NULL, &dc.col[i])) {
618 if (colorname[i])
619 die("Could not allocate color '%s'\n", colorname[i]);
620 else
621 die("Could not allocate color %d\n", i);
622 }
623 loaded = 1;
624 }
625
626 int
627 xsetcolorname(int x, const char *name)
628 {
629 Color ncolor;
630
631 if (!BETWEEN(x, 0, dc.collen))
632 return 1;
633
634
635 if (!xloadcolor(x, name, &ncolor))
636 return 1;
637
638 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
639 dc.col[x] = ncolor;
640
641 return 0;
642 }
643
644 /*
645 * Absolute coordinates.
646 */
647 void
648 xclear(int x1, int y1, int x2, int y2)
649 {
650 XftDrawRect(xw.draw,
651 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
652 x1, y1, x2-x1, y2-y1);
653 }
654
655 void
656 xhints(void)
657 {
658 XClassHint class = {opt_name ? opt_name : termname,
659 opt_class ? opt_class : termname};
660 XWMHints wm = {.flags = InputHint, .input = 1};
661 XSizeHints *sizeh = NULL;
662
663 sizeh = XAllocSizeHints();
664
665 sizeh->flags = PSize | PResizeInc | PBaseSize;
666 sizeh->height = win.h;
667 sizeh->width = win.w;
668 sizeh->height_inc = win.ch;
669 sizeh->width_inc = win.cw;
670 sizeh->base_height = 2 * borderpx;
671 sizeh->base_width = 2 * borderpx;
672 if (xw.isfixed) {
673 sizeh->flags |= PMaxSize | PMinSize;
674 sizeh->min_width = sizeh->max_width = win.w;
675 sizeh->min_height = sizeh->max_height = win.h;
676 }
677 if (xw.gm & (XValue|YValue)) {
678 sizeh->flags |= USPosition | PWinGravity;
679 sizeh->x = xw.l;
680 sizeh->y = xw.t;
681 sizeh->win_gravity = xgeommasktogravity(xw.gm);
682 }
683
684 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
685 &class);
686 XFree(sizeh);
687 }
688
689 int
690 xgeommasktogravity(int mask)
691 {
692 switch (mask & (XNegative|YNegative)) {
693 case 0:
694 return NorthWestGravity;
695 case XNegative:
696 return NorthEastGravity;
697 case YNegative:
698 return SouthWestGravity;
699 }
700
701 return SouthEastGravity;
702 }
703
704 int
705 xloadfont(Font *f, FcPattern *pattern)
706 {
707 FcPattern *configured;
708 FcPattern *match;
709 FcResult result;
710 XGlyphInfo extents;
711 int wantattr, haveattr;
712
713 /*
714 * Manually configure instead of calling XftMatchFont
715 * so that we can use the configured pattern for
716 * "missing glyph" lookups.
717 */
718 configured = FcPatternDuplicate(pattern);
719 if (!configured)
720 return 1;
721
722 FcConfigSubstitute(NULL, configured, FcMatchPattern);
723 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
724
725 match = FcFontMatch(NULL, configured, &result);
726 if (!match) {
727 FcPatternDestroy(configured);
728 return 1;
729 }
730
731 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
732 FcPatternDestroy(configured);
733 FcPatternDestroy(match);
734 return 1;
735 }
736
737 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
738 XftResultMatch)) {
739 /*
740 * Check if xft was unable to find a font with the appropriate
741 * slant but gave us one anyway. Try to mitigate.
742 */
743 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
744 &haveattr) != XftResultMatch) || haveattr < wantattr) {
745 f->badslant = 1;
746 fputs("st: font slant does not match\n", stderr);
747 }
748 }
749
750 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
751 XftResultMatch)) {
752 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
753 &haveattr) != XftResultMatch) || haveattr != wantattr) {
754 f->badweight = 1;
755 fputs("st: font weight does not match\n", stderr);
756 }
757 }
758
759 XftTextExtentsUtf8(xw.dpy, f->match,
760 (const FcChar8 *) ascii_printable,
761 strlen(ascii_printable), &extents);
762
763 f->set = NULL;
764 f->pattern = configured;
765
766 f->ascent = f->match->ascent;
767 f->descent = f->match->descent;
768 f->lbearing = 0;
769 f->rbearing = f->match->max_advance_width;
770
771 f->height = f->ascent + f->descent;
772 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
773
774 return 0;
775 }
776
777 void
778 xloadfonts(char *fontstr, double fontsize)
779 {
780 FcPattern *pattern;
781 double fontval;
782 float ceilf(float);
783
784 if (fontstr[0] == '-') {
785 pattern = XftXlfdParse(fontstr, False, False);
786 } else {
787 pattern = FcNameParse((FcChar8 *)fontstr);
788 }
789
790 if (!pattern)
791 die("st: can't open font %s\n", fontstr);
792
793 if (fontsize > 1) {
794 FcPatternDel(pattern, FC_PIXEL_SIZE);
795 FcPatternDel(pattern, FC_SIZE);
796 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
797 usedfontsize = fontsize;
798 } else {
799 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
800 FcResultMatch) {
801 usedfontsize = fontval;
802 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
803 FcResultMatch) {
804 usedfontsize = -1;
805 } else {
806 /*
807 * Default font size is 12, if none given. This is to
808 * have a known usedfontsize value.
809 */
810 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
811 usedfontsize = 12;
812 }
813 defaultfontsize = usedfontsize;
814 }
815
816 if (xloadfont(&dc.font, pattern))
817 die("st: can't open font %s\n", fontstr);
818
819 if (usedfontsize < 0) {
820 FcPatternGetDouble(dc.font.match->pattern,
821 FC_PIXEL_SIZE, 0, &fontval);
822 usedfontsize = fontval;
823 if (fontsize == 0)
824 defaultfontsize = fontval;
825 }
826
827 /* Setting character width and height. */
828 win.cw = ceilf(dc.font.width * cwscale);
829 win.ch = ceilf(dc.font.height * chscale);
830
831 FcPatternDel(pattern, FC_SLANT);
832 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
833 if (xloadfont(&dc.ifont, pattern))
834 die("st: can't open font %s\n", fontstr);
835
836 FcPatternDel(pattern, FC_WEIGHT);
837 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
838 if (xloadfont(&dc.ibfont, pattern))
839 die("st: can't open font %s\n", fontstr);
840
841 FcPatternDel(pattern, FC_SLANT);
842 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
843 if (xloadfont(&dc.bfont, pattern))
844 die("st: can't open font %s\n", fontstr);
845
846 FcPatternDestroy(pattern);
847 }
848
849 void
850 xunloadfont(Font *f)
851 {
852 XftFontClose(xw.dpy, f->match);
853 FcPatternDestroy(f->pattern);
854 if (f->set)
855 FcFontSetDestroy(f->set);
856 }
857
858 void
859 xunloadfonts(void)
860 {
861 /* Free the loaded fonts in the font cache. */
862 while (frclen > 0)
863 XftFontClose(xw.dpy, frc[--frclen].font);
864
865 xunloadfont(&dc.font);
866 xunloadfont(&dc.bfont);
867 xunloadfont(&dc.ifont);
868 xunloadfont(&dc.ibfont);
869 }
870
871 void
872 xinit(void)
873 {
874 XGCValues gcvalues;
875 Cursor cursor;
876 Window parent;
877 pid_t thispid = getpid();
878 XColor xmousefg, xmousebg;
879
880 if (!(xw.dpy = XOpenDisplay(NULL)))
881 die("Can't open display\n");
882 xw.scr = XDefaultScreen(xw.dpy);
883 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
884
885 /* font */
886 if (!FcInit())
887 die("Could not init fontconfig.\n");
888
889 usedfont = (opt_font == NULL)? font : opt_font;
890 xloadfonts(usedfont, 0);
891
892 /* colors */
893 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
894 xloadcols();
895
896 /* adjust fixed window geometry */
897 win.w = 2 * borderpx + term.col * win.cw;
898 win.h = 2 * borderpx + term.row * win.ch;
899 if (xw.gm & XNegative)
900 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
901 if (xw.gm & YNegative)
902 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
903
904 /* Events */
905 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
906 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
907 xw.attrs.bit_gravity = NorthWestGravity;
908 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
909 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
910 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
911 xw.attrs.colormap = xw.cmap;
912
913 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
914 parent = XRootWindow(xw.dpy, xw.scr);
915 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
916 win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
917 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
918 | CWEventMask | CWColormap, &xw.attrs);
919
920 memset(&gcvalues, 0, sizeof(gcvalues));
921 gcvalues.graphics_exposures = False;
922 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
923 &gcvalues);
924 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
925 DefaultDepth(xw.dpy, xw.scr));
926 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
927 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
928
929 /* Xft rendering context */
930 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
931
932 /* input methods */
933 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
934 XSetLocaleModifiers("@im=local");
935 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
936 XSetLocaleModifiers("@im=");
937 if ((xw.xim = XOpenIM(xw.dpy,
938 NULL, NULL, NULL)) == NULL) {
939 die("XOpenIM failed. Could not open input"
940 " device.\n");
941 }
942 }
943 }
944 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
945 | XIMStatusNothing, XNClientWindow, xw.win,
946 XNFocusWindow, xw.win, NULL);
947 if (xw.xic == NULL)
948 die("XCreateIC failed. Could not obtain input method.\n");
949
950 /* white cursor, black outline */
951 cursor = XCreateFontCursor(xw.dpy, mouseshape);
952 XDefineCursor(xw.dpy, xw.win, cursor);
953
954 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
955 xmousefg.red = 0xffff;
956 xmousefg.green = 0xffff;
957 xmousefg.blue = 0xffff;
958 }
959
960 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
961 xmousebg.red = 0x0000;
962 xmousebg.green = 0x0000;
963 xmousebg.blue = 0x0000;
964 }
965
966 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
967
968 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
969 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
970 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
971 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
972
973 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
974 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
975 PropModeReplace, (uchar *)&thispid, 1);
976
977 resettitle();
978 XMapWindow(xw.dpy, xw.win);
979 xhints();
980 XSync(xw.dpy, False);
981
982 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
983 if (xsel.xtarget == None)
984 xsel.xtarget = XA_STRING;
985 }
986
987 int
988 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
989 {
990 float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
991 ushort mode, prevmode = USHRT_MAX;
992 Font *font = &dc.font;
993 int frcflags = FRC_NORMAL;
994 float runewidth = win.cw;
995 Rune rune;
996 FT_UInt glyphidx;
997 FcResult fcres;
998 FcPattern *fcpattern, *fontpattern;
999 FcFontSet *fcsets[] = { NULL };
1000 FcCharSet *fccharset;
1001 int i, f, numspecs = 0;
1002
1003 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1004 /* Fetch rune and mode for current glyph. */
1005 rune = glyphs[i].u;
1006 mode = glyphs[i].mode;
1007
1008 /* Skip dummy wide-character spacing. */
1009 if (mode == ATTR_WDUMMY)
1010 continue;
1011
1012 /* Determine font for glyph if different from previous glyph. */
1013 if (prevmode != mode) {
1014 prevmode = mode;
1015 font = &dc.font;
1016 frcflags = FRC_NORMAL;
1017 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1018 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1019 font = &dc.ibfont;
1020 frcflags = FRC_ITALICBOLD;
1021 } else if (mode & ATTR_ITALIC) {
1022 font = &dc.ifont;
1023 frcflags = FRC_ITALIC;
1024 } else if (mode & ATTR_BOLD) {
1025 font = &dc.bfont;
1026 frcflags = FRC_BOLD;
1027 }
1028 yp = winy + font->ascent;
1029 }
1030
1031 /* Lookup character index with default font. */
1032 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1033 if (glyphidx) {
1034 specs[numspecs].font = font->match;
1035 specs[numspecs].glyph = glyphidx;
1036 specs[numspecs].x = (short)xp;
1037 specs[numspecs].y = (short)yp;
1038 xp += runewidth;
1039 numspecs++;
1040 continue;
1041 }
1042
1043 /* Fallback on font cache, search the font cache for match. */
1044 for (f = 0; f < frclen; f++) {
1045 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1046 /* Everything correct. */
1047 if (glyphidx && frc[f].flags == frcflags)
1048 break;
1049 /* We got a default font for a not found glyph. */
1050 if (!glyphidx && frc[f].flags == frcflags
1051 && frc[f].unicodep == rune) {
1052 break;
1053 }
1054 }
1055
1056 /* Nothing was found. Use fontconfig to find matching font. */
1057 if (f >= frclen) {
1058 if (!font->set)
1059 font->set = FcFontSort(0, font->pattern,
1060 1, 0, &fcres);
1061 fcsets[0] = font->set;
1062
1063 /*
1064 * Nothing was found in the cache. Now use
1065 * some dozen of Fontconfig calls to get the
1066 * font for one single character.
1067 *
1068 * Xft and fontconfig are design failures.
1069 */
1070 fcpattern = FcPatternDuplicate(font->pattern);
1071 fccharset = FcCharSetCreate();
1072
1073 FcCharSetAddChar(fccharset, rune);
1074 FcPatternAddCharSet(fcpattern, FC_CHARSET,
1075 fccharset);
1076 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1077
1078 FcConfigSubstitute(0, fcpattern,
1079 FcMatchPattern);
1080 FcDefaultSubstitute(fcpattern);
1081
1082 fontpattern = FcFontSetMatch(0, fcsets, 1,
1083 fcpattern, &fcres);
1084
1085 /*
1086 * Overwrite or create the new cache entry.
1087 */
1088 if (frclen >= LEN(frc)) {
1089 frclen = LEN(frc) - 1;
1090 XftFontClose(xw.dpy, frc[frclen].font);
1091 frc[frclen].unicodep = 0;
1092 }
1093
1094 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1095 fontpattern);
1096 frc[frclen].flags = frcflags;
1097 frc[frclen].unicodep = rune;
1098
1099 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1100
1101 f = frclen;
1102 frclen++;
1103
1104 FcPatternDestroy(fcpattern);
1105 FcCharSetDestroy(fccharset);
1106 }
1107
1108 specs[numspecs].font = frc[f].font;
1109 specs[numspecs].glyph = glyphidx;
1110 specs[numspecs].x = (short)xp;
1111 specs[numspecs].y = (short)yp;
1112 xp += runewidth;
1113 numspecs++;
1114 }
1115
1116 return numspecs;
1117 }
1118
1119 void
1120 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1121 {
1122 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1123 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1124 width = charlen * win.cw;
1125 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1126 XRenderColor colfg, colbg;
1127 XRectangle r;
1128
1129 /* Fallback on color display for attributes not supported by the font */
1130 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1131 if (dc.ibfont.badslant || dc.ibfont.badweight)
1132 base.fg = defaultattr;
1133 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1134 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1135 base.fg = defaultattr;
1136 }
1137
1138 if (IS_TRUECOL(base.fg)) {
1139 colfg.alpha = 0xffff;
1140 colfg.red = TRUERED(base.fg);
1141 colfg.green = TRUEGREEN(base.fg);
1142 colfg.blue = TRUEBLUE(base.fg);
1143 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1144 fg = &truefg;
1145 } else {
1146 fg = &dc.col[base.fg];
1147 }
1148
1149 if (IS_TRUECOL(base.bg)) {
1150 colbg.alpha = 0xffff;
1151 colbg.green = TRUEGREEN(base.bg);
1152 colbg.red = TRUERED(base.bg);
1153 colbg.blue = TRUEBLUE(base.bg);
1154 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1155 bg = &truebg;
1156 } else {
1157 bg = &dc.col[base.bg];
1158 }
1159
1160 /* Change basic system colors [0-7] to bright system colors [8-15] */
1161 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1162 fg = &dc.col[base.fg + 8];
1163
1164 if (IS_SET(MODE_REVERSE)) {
1165 if (fg == &dc.col[defaultfg]) {
1166 fg = &dc.col[defaultbg];
1167 } else {
1168 colfg.red = ~fg->color.red;
1169 colfg.green = ~fg->color.green;
1170 colfg.blue = ~fg->color.blue;
1171 colfg.alpha = fg->color.alpha;
1172 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1173 &revfg);
1174 fg = &revfg;
1175 }
1176
1177 if (bg == &dc.col[defaultbg]) {
1178 bg = &dc.col[defaultfg];
1179 } else {
1180 colbg.red = ~bg->color.red;
1181 colbg.green = ~bg->color.green;
1182 colbg.blue = ~bg->color.blue;
1183 colbg.alpha = bg->color.alpha;
1184 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1185 &revbg);
1186 bg = &revbg;
1187 }
1188 }
1189
1190 if (base.mode & ATTR_REVERSE) {
1191 temp = fg;
1192 fg = bg;
1193 bg = temp;
1194 }
1195
1196 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1197 colfg.red = fg->color.red / 2;
1198 colfg.green = fg->color.green / 2;
1199 colfg.blue = fg->color.blue / 2;
1200 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1201 fg = &revfg;
1202 }
1203
1204 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
1205 fg = bg;
1206
1207 if (base.mode & ATTR_INVISIBLE)
1208 fg = bg;
1209
1210 /* Intelligent cleaning up of the borders. */
1211 if (x == 0) {
1212 xclear(0, (y == 0)? 0 : winy, borderpx,
1213 winy + win.ch + ((y >= term.row-1)? win.h : 0));
1214 }
1215 if (x + charlen >= term.col) {
1216 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1217 ((y >= term.row-1)? win.h : (winy + win.ch)));
1218 }
1219 if (y == 0)
1220 xclear(winx, 0, winx + width, borderpx);
1221 if (y == term.row-1)
1222 xclear(winx, winy + win.ch, winx + width, win.h);
1223
1224 /* Clean up the region we want to draw to. */
1225 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1226
1227 /* Set the clip region because Xft is sometimes dirty. */
1228 r.x = 0;
1229 r.y = 0;
1230 r.height = win.ch;
1231 r.width = width;
1232 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1233
1234 /* Render the glyphs. */
1235 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1236
1237 /* Render underline and strikethrough. */
1238 if (base.mode & ATTR_UNDERLINE) {
1239 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
1240 width, 1);
1241 }
1242
1243 if (base.mode & ATTR_STRUCK) {
1244 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
1245 width, 1);
1246 }
1247
1248 /* Reset clip to none. */
1249 XftDrawSetClip(xw.draw, 0);
1250 }
1251
1252 void
1253 xdrawglyph(Glyph g, int x, int y)
1254 {
1255 int numspecs;
1256 XftGlyphFontSpec spec;
1257
1258 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1259 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1260 }
1261
1262 void
1263 xdrawcursor(void)
1264 {
1265 static int oldx = 0, oldy = 0;
1266 int curx;
1267 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
1268 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
1269 Color drawcol;
1270
1271 LIMIT(oldx, 0, term.col-1);
1272 LIMIT(oldy, 0, term.row-1);
1273
1274 curx = term.c.x;
1275
1276 /* adjust position if in dummy */
1277 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
1278 oldx--;
1279 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
1280 curx--;
1281
1282 /* remove the old cursor */
1283 og = term.line[oldy][oldx];
1284 if (ena_sel && selected(oldx, oldy))
1285 og.mode ^= ATTR_REVERSE;
1286 xdrawglyph(og, oldx, oldy);
1287
1288 g.u = term.line[term.c.y][term.c.x].u;
1289 g.mode |= term.line[term.c.y][term.c.x].mode &
1290 (ATTR_BOLD | ATTR_ITALIC | ATTR_UNDERLINE | ATTR_STRUCK);
1291
1292 /*
1293 * Select the right color for the right mode.
1294 */
1295 if (IS_SET(MODE_REVERSE)) {
1296 g.mode |= ATTR_REVERSE;
1297 g.bg = defaultfg;
1298 if (ena_sel && selected(term.c.x, term.c.y)) {
1299 drawcol = dc.col[defaultcs];
1300 g.fg = defaultrcs;
1301 } else {
1302 drawcol = dc.col[defaultrcs];
1303 g.fg = defaultcs;
1304 }
1305 } else {
1306 if (ena_sel && selected(term.c.x, term.c.y)) {
1307 drawcol = dc.col[defaultrcs];
1308 g.fg = defaultfg;
1309 g.bg = defaultrcs;
1310 } else {
1311 drawcol = dc.col[defaultcs];
1312 }
1313 }
1314
1315 if (IS_SET(MODE_HIDE))
1316 return;
1317
1318 /* draw the new one */
1319 if (win.state & WIN_FOCUSED) {
1320 switch (win.cursor) {
1321 case 7: /* st extension: snowman */
1322 utf8decode("☃", &g.u, UTF_SIZ);
1323 case 0: /* Blinking Block */
1324 case 1: /* Blinking Block (Default) */
1325 case 2: /* Steady Block */
1326 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
1327 xdrawglyph(g, term.c.x, term.c.y);
1328 break;
1329 case 3: /* Blinking Underline */
1330 case 4: /* Steady Underline */
1331 XftDrawRect(xw.draw, &drawcol,
1332 borderpx + curx * win.cw,
1333 borderpx + (term.c.y + 1) * win.ch - \
1334 cursorthickness,
1335 win.cw, cursorthickness);
1336 break;
1337 case 5: /* Blinking bar */
1338 case 6: /* Steady bar */
1339 XftDrawRect(xw.draw, &drawcol,
1340 borderpx + curx * win.cw,
1341 borderpx + term.c.y * win.ch,
1342 cursorthickness, win.ch);
1343 break;
1344 }
1345 } else {
1346 XftDrawRect(xw.draw, &drawcol,
1347 borderpx + curx * win.cw,
1348 borderpx + term.c.y * win.ch,
1349 win.cw - 1, 1);
1350 XftDrawRect(xw.draw, &drawcol,
1351 borderpx + curx * win.cw,
1352 borderpx + term.c.y * win.ch,
1353 1, win.ch - 1);
1354 XftDrawRect(xw.draw, &drawcol,
1355 borderpx + (curx + 1) * win.cw - 1,
1356 borderpx + term.c.y * win.ch,
1357 1, win.ch - 1);
1358 XftDrawRect(xw.draw, &drawcol,
1359 borderpx + curx * win.cw,
1360 borderpx + (term.c.y + 1) * win.ch - 1,
1361 win.cw, 1);
1362 }
1363 oldx = curx, oldy = term.c.y;
1364 }
1365
1366 void
1367 xsetenv(void)
1368 {
1369 char buf[sizeof(long) * 8 + 1];
1370
1371 snprintf(buf, sizeof(buf), "%lu", xw.win);
1372 setenv("WINDOWID", buf, 1);
1373 }
1374
1375 void
1376 xsettitle(char *p)
1377 {
1378 XTextProperty prop;
1379
1380 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1381 &prop);
1382 XSetWMName(xw.dpy, xw.win, &prop);
1383 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1384 XFree(prop.value);
1385 }
1386
1387 void
1388 draw(void)
1389 {
1390 drawregion(0, 0, term.col, term.row);
1391 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1392 win.h, 0, 0);
1393 XSetForeground(xw.dpy, dc.gc,
1394 dc.col[IS_SET(MODE_REVERSE)?
1395 defaultfg : defaultbg].pixel);
1396 }
1397
1398 void
1399 drawregion(int x1, int y1, int x2, int y2)
1400 {
1401 int i, x, y, ox, numspecs;
1402 Glyph base, new;
1403 XftGlyphFontSpec *specs;
1404 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
1405
1406 if (!(win.state & WIN_VISIBLE))
1407 return;
1408
1409 for (y = y1; y < y2; y++) {
1410 if (!term.dirty[y])
1411 continue;
1412
1413 term.dirty[y] = 0;
1414
1415 specs = term.specbuf;
1416 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
1417
1418 i = ox = 0;
1419 for (x = x1; x < x2 && i < numspecs; x++) {
1420 new = term.line[y][x];
1421 if (new.mode == ATTR_WDUMMY)
1422 continue;
1423 if (ena_sel && selected(x, y))
1424 new.mode ^= ATTR_REVERSE;
1425 if (i > 0 && ATTRCMP(base, new)) {
1426 xdrawglyphfontspecs(specs, base, i, ox, y);
1427 specs += i;
1428 numspecs -= i;
1429 i = 0;
1430 }
1431 if (i == 0) {
1432 ox = x;
1433 base = new;
1434 }
1435 i++;
1436 }
1437 if (i > 0)
1438 xdrawglyphfontspecs(specs, base, i, ox, y);
1439 }
1440 xdrawcursor();
1441 }
1442
1443 void
1444 expose(XEvent *ev)
1445 {
1446 redraw();
1447 }
1448
1449 void
1450 visibility(XEvent *ev)
1451 {
1452 XVisibilityEvent *e = &ev->xvisibility;
1453
1454 MODBIT(win.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
1455 }
1456
1457 void
1458 unmap(XEvent *ev)
1459 {
1460 win.state &= ~WIN_VISIBLE;
1461 }
1462
1463 void
1464 xsetpointermotion(int set)
1465 {
1466 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1467 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1468 }
1469
1470 void
1471 xseturgency(int add)
1472 {
1473 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1474
1475 MODBIT(h->flags, add, XUrgencyHint);
1476 XSetWMHints(xw.dpy, xw.win, h);
1477 XFree(h);
1478 }
1479
1480 void
1481 xbell(int vol)
1482 {
1483 XkbBell(xw.dpy, xw.win, vol, (Atom)NULL);
1484 }
1485
1486 unsigned long
1487 xwinid(void)
1488 {
1489 return xw.win;
1490 }
1491
1492 void
1493 focus(XEvent *ev)
1494 {
1495 XFocusChangeEvent *e = &ev->xfocus;
1496
1497 if (e->mode == NotifyGrab)
1498 return;
1499
1500 if (ev->type == FocusIn) {
1501 XSetICFocus(xw.xic);
1502 win.state |= WIN_FOCUSED;
1503 xseturgency(0);
1504 if (IS_SET(MODE_FOCUS))
1505 ttywrite("\033[I", 3);
1506 } else {
1507 XUnsetICFocus(xw.xic);
1508 win.state &= ~WIN_FOCUSED;
1509 if (IS_SET(MODE_FOCUS))
1510 ttywrite("\033[O", 3);
1511 }
1512 }
1513
1514 void
1515 kpress(XEvent *ev)
1516 {
1517 XKeyEvent *e = &ev->xkey;
1518 KeySym ksym;
1519 char buf[32], *customkey;
1520 int len;
1521 Rune c;
1522 Status status;
1523 Shortcut *bp;
1524
1525 if (IS_SET(MODE_KBDLOCK))
1526 return;
1527
1528 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
1529 /* 1. shortcuts */
1530 for (bp = shortcuts; bp < shortcuts + shortcutslen; bp++) {
1531 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1532 bp->func(&(bp->arg));
1533 return;
1534 }
1535 }
1536
1537 /* 2. custom keys from config.h */
1538 if ((customkey = kmap(ksym, e->state))) {
1539 ttysend(customkey, strlen(customkey));
1540 return;
1541 }
1542
1543 /* 3. composed string from input method */
1544 if (len == 0)
1545 return;
1546 if (len == 1 && e->state & Mod1Mask) {
1547 if (IS_SET(MODE_8BIT)) {
1548 if (*buf < 0177) {
1549 c = *buf | 0x80;
1550 len = utf8encode(c, buf);
1551 }
1552 } else {
1553 buf[1] = buf[0];
1554 buf[0] = '\033';
1555 len = 2;
1556 }
1557 }
1558 ttysend(buf, len);
1559 }
1560
1561
1562 void
1563 cmessage(XEvent *e)
1564 {
1565 /*
1566 * See xembed specs
1567 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1568 */
1569 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1570 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1571 win.state |= WIN_FOCUSED;
1572 xseturgency(0);
1573 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1574 win.state &= ~WIN_FOCUSED;
1575 }
1576 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1577 /* Send SIGHUP to shell */
1578 kill(pid, SIGHUP);
1579 exit(0);
1580 }
1581 }
1582
1583 void
1584 resize(XEvent *e)
1585 {
1586 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1587 return;
1588
1589 cresize(e->xconfigure.width, e->xconfigure.height);
1590 ttyresize();
1591 }
1592
1593 void
1594 run(void)
1595 {
1596 XEvent ev;
1597 int w = win.w, h = win.h;
1598 fd_set rfd;
1599 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
1600 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
1601 long deltatime;
1602
1603 /* Waiting for window mapping */
1604 do {
1605 XNextEvent(xw.dpy, &ev);
1606 /*
1607 * This XFilterEvent call is required because of XOpenIM. It
1608 * does filter out the key event and some client message for
1609 * the input method too.
1610 */
1611 if (XFilterEvent(&ev, None))
1612 continue;
1613 if (ev.type == ConfigureNotify) {
1614 w = ev.xconfigure.width;
1615 h = ev.xconfigure.height;
1616 }
1617 } while (ev.type != MapNotify);
1618
1619 cresize(w, h);
1620 ttynew();
1621 ttyresize();
1622
1623 clock_gettime(CLOCK_MONOTONIC, &last);
1624 lastblink = last;
1625
1626 for (xev = actionfps;;) {
1627 FD_ZERO(&rfd);
1628 FD_SET(cmdfd, &rfd);
1629 FD_SET(xfd, &rfd);
1630
1631 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1632 if (errno == EINTR)
1633 continue;
1634 die("select failed: %s\n", strerror(errno));
1635 }
1636 if (FD_ISSET(cmdfd, &rfd)) {
1637 ttyread();
1638 if (blinktimeout) {
1639 blinkset = tattrset(ATTR_BLINK);
1640 if (!blinkset)
1641 MODBIT(term.mode, 0, MODE_BLINK);
1642 }
1643 }
1644
1645 if (FD_ISSET(xfd, &rfd))
1646 xev = actionfps;
1647
1648 clock_gettime(CLOCK_MONOTONIC, &now);
1649 drawtimeout.tv_sec = 0;
1650 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
1651 tv = &drawtimeout;
1652
1653 dodraw = 0;
1654 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
1655 tsetdirtattr(ATTR_BLINK);
1656 term.mode ^= MODE_BLINK;
1657 lastblink = now;
1658 dodraw = 1;
1659 }
1660 deltatime = TIMEDIFF(now, last);
1661 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
1662 dodraw = 1;
1663 last = now;
1664 }
1665
1666 if (dodraw) {
1667 while (XPending(xw.dpy)) {
1668 XNextEvent(xw.dpy, &ev);
1669 if (XFilterEvent(&ev, None))
1670 continue;
1671 if (handler[ev.type])
1672 (handler[ev.type])(&ev);
1673 }
1674
1675 draw();
1676 XFlush(xw.dpy);
1677
1678 if (xev && !FD_ISSET(xfd, &rfd))
1679 xev--;
1680 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
1681 if (blinkset) {
1682 if (TIMEDIFF(now, lastblink) \
1683 > blinktimeout) {
1684 drawtimeout.tv_nsec = 1000;
1685 } else {
1686 drawtimeout.tv_nsec = (1E6 * \
1687 (blinktimeout - \
1688 TIMEDIFF(now,
1689 lastblink)));
1690 }
1691 drawtimeout.tv_sec = \
1692 drawtimeout.tv_nsec / 1E9;
1693 drawtimeout.tv_nsec %= (long)1E9;
1694 } else {
1695 tv = NULL;
1696 }
1697 }
1698 }
1699 }
1700 }
1701
1702 int
1703 main(int argc, char *argv[])
1704 {
1705 xw.l = xw.t = 0;
1706 xw.isfixed = False;
1707 win.cursor = cursorshape;
1708
1709 ARGBEGIN {
1710 case 'a':
1711 allowaltscreen = 0;
1712 break;
1713 case 'c':
1714 opt_class = EARGF(usage());
1715 break;
1716 case 'e':
1717 if (argc > 0)
1718 --argc, ++argv;
1719 goto run;
1720 case 'f':
1721 opt_font = EARGF(usage());
1722 break;
1723 case 'g':
1724 xw.gm = XParseGeometry(EARGF(usage()),
1725 &xw.l, &xw.t, &cols, &rows);
1726 break;
1727 case 'i':
1728 xw.isfixed = 1;
1729 break;
1730 case 'o':
1731 opt_io = EARGF(usage());
1732 break;
1733 case 'l':
1734 opt_line = EARGF(usage());
1735 break;
1736 case 'n':
1737 opt_name = EARGF(usage());
1738 break;
1739 case 't':
1740 case 'T':
1741 opt_title = EARGF(usage());
1742 break;
1743 case 'w':
1744 opt_embed = EARGF(usage());
1745 break;
1746 case 'v':
1747 die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
1748 break;
1749 default:
1750 usage();
1751 } ARGEND;
1752
1753 run:
1754 if (argc > 0) {
1755 /* eat all remaining arguments */
1756 opt_cmd = argv;
1757 if (!opt_title && !opt_line)
1758 opt_title = basename(xstrdup(argv[0]));
1759 }
1760 setlocale(LC_CTYPE, "");
1761 XSetLocaleModifiers("");
1762 tnew(MAX(cols, 1), MAX(rows, 1));
1763 xinit();
1764 selinit();
1765 run();
1766
1767 return 0;
1768 }