x.c (48671B) download
1/* See LICENSE for license details. */
2#include <errno.h>
3#include <math.h>
4#include <limits.h>
5#include <locale.h>
6#include <signal.h>
7#include <sys/select.h>
8#include <time.h>
9#include <unistd.h>
10#include <libgen.h>
11#include <X11/Xatom.h>
12#include <X11/Xlib.h>
13#include <X11/cursorfont.h>
14#include <X11/keysym.h>
15#include <X11/Xft/Xft.h>
16#include <X11/XKBlib.h>
17
18char *argv0;
19#include "arg.h"
20#include "st.h"
21#include "win.h"
22
23/* types used in config.h */
24typedef struct {
25 uint mod;
26 KeySym keysym;
27 void (*func)(const Arg *);
28 const Arg arg;
29} Shortcut;
30
31typedef struct {
32 uint mod;
33 uint button;
34 void (*func)(const Arg *);
35 const Arg arg;
36 uint release;
37} MouseShortcut;
38
39typedef struct {
40 KeySym k;
41 uint mask;
42 char *s;
43 /* three-valued logic variables: 0 indifferent, 1 on, -1 off */
44 signed char appkey; /* application keypad */
45 signed char appcursor; /* application cursor */
46} Key;
47
48/* X modifiers */
49#define XK_ANY_MOD UINT_MAX
50#define XK_NO_MOD 0
51#define XK_SWITCH_MOD (1<<13|1<<14)
52
53/* function definitions used in config.h */
54static void clipcopy(const Arg *);
55static void clippaste(const Arg *);
56static void numlock(const Arg *);
57static void selpaste(const Arg *);
58static void zoom(const Arg *);
59static void zoomabs(const Arg *);
60static void zoomreset(const Arg *);
61static void ttysend(const Arg *);
62void kscrollup(const Arg *);
63void kscrolldown(const Arg *);
64
65/* config.h for applying patches and the configuration. */
66#include "config.h"
67
68/* XEMBED messages */
69#define XEMBED_FOCUS_IN 4
70#define XEMBED_FOCUS_OUT 5
71
72/* macros */
73#define IS_SET(flag) ((win.mode & (flag)) != 0)
74#define TRUERED(x) (((x) & 0xff0000) >> 8)
75#define TRUEGREEN(x) (((x) & 0xff00))
76#define TRUEBLUE(x) (((x) & 0xff) << 8)
77
78typedef XftDraw *Draw;
79typedef XftColor Color;
80typedef XftGlyphFontSpec GlyphFontSpec;
81
82/* Purely graphic info */
83typedef struct {
84 int tw, th; /* tty width and height */
85 int w, h; /* window width and height */
86 int hborderpx, vborderpx;
87 int ch; /* char height */
88 int cw; /* char width */
89 int mode; /* window state/mode flags */
90 int cursor; /* cursor style */
91} TermWindow;
92
93typedef struct {
94 Display *dpy;
95 Colormap cmap;
96 Window win;
97 Drawable buf;
98 GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
99 Atom xembed, wmdeletewin, netwmname, netwmiconname, netwmpid;
100 struct {
101 XIM xim;
102 XIC xic;
103 XPoint spot;
104 XVaNestedList spotlist;
105 } ime;
106 Draw draw;
107 Visual *vis;
108 XSetWindowAttributes attrs;
109 int scr;
110 int isfixed; /* is fixed geometry? */
111 int l, t; /* left and top offset */
112 int gm; /* geometry mask */
113} XWindow;
114
115typedef struct {
116 Atom xtarget;
117 char *primary, *clipboard;
118 struct timespec tclick1;
119 struct timespec tclick2;
120} XSelection;
121
122/* Font structure */
123#define Font Font_
124typedef struct {
125 int height;
126 int width;
127 int ascent;
128 int descent;
129 int badslant;
130 int badweight;
131 short lbearing;
132 short rbearing;
133 XftFont *match;
134 FcFontSet *set;
135 FcPattern *pattern;
136} Font;
137
138/* Drawing Context */
139typedef struct {
140 Color *col;
141 size_t collen;
142 Font font, bfont, ifont, ibfont;
143 GC gc;
144} DC;
145
146static inline ushort sixd_to_16bit(int);
147static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
148static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
149static void xdrawglyph(Glyph, int, int);
150static void xclear(int, int, int, int);
151static int xgeommasktogravity(int);
152static int ximopen(Display *);
153static void ximinstantiate(Display *, XPointer, XPointer);
154static void ximdestroy(XIM, XPointer, XPointer);
155static int xicdestroy(XIC, XPointer, XPointer);
156static void xinit(int, int);
157static void cresize(int, int);
158static void xresize(int, int);
159static void xhints(void);
160static int xloadcolor(int, const char *, Color *);
161static int xloadfont(Font *, FcPattern *);
162static void xloadfonts(const char *, double);
163static void xunloadfont(Font *);
164static void xunloadfonts(void);
165static void xsetenv(void);
166static void xseturgency(int);
167static int evcol(XEvent *);
168static int evrow(XEvent *);
169
170static void expose(XEvent *);
171static void visibility(XEvent *);
172static void unmap(XEvent *);
173static void kpress(XEvent *);
174static void cmessage(XEvent *);
175static void resize(XEvent *);
176static void focus(XEvent *);
177static uint buttonmask(uint);
178static int mouseaction(XEvent *, uint);
179static void brelease(XEvent *);
180static void bpress(XEvent *);
181static void bmotion(XEvent *);
182static void propnotify(XEvent *);
183static void selnotify(XEvent *);
184static void selclear_(XEvent *);
185static void selrequest(XEvent *);
186static void setsel(char *, Time);
187static void mousesel(XEvent *, int);
188static void mousereport(XEvent *);
189static char *kmap(KeySym, uint);
190static int match(uint, uint);
191
192static void run(void);
193static void usage(void);
194
195static void (*handler[LASTEvent])(XEvent *) = {
196 [KeyPress] = kpress,
197 [ClientMessage] = cmessage,
198 [ConfigureNotify] = resize,
199 [VisibilityNotify] = visibility,
200 [UnmapNotify] = unmap,
201 [Expose] = expose,
202 [FocusIn] = focus,
203 [FocusOut] = focus,
204 [MotionNotify] = bmotion,
205 [ButtonPress] = bpress,
206 [ButtonRelease] = brelease,
207/*
208 * Uncomment if you want the selection to disappear when you select something
209 * different in another window.
210 */
211/* [SelectionClear] = selclear_, */
212 [SelectionNotify] = selnotify,
213/*
214 * PropertyNotify is only turned on when there is some INCR transfer happening
215 * for the selection retrieval.
216 */
217 [PropertyNotify] = propnotify,
218 [SelectionRequest] = selrequest,
219};
220
221/* Globals */
222static DC dc;
223static XWindow xw;
224static XSelection xsel;
225static TermWindow win;
226
227/* Font Ring Cache */
228enum {
229 FRC_NORMAL,
230 FRC_ITALIC,
231 FRC_BOLD,
232 FRC_ITALICBOLD
233};
234
235typedef struct {
236 XftFont *font;
237 int flags;
238 Rune unicodep;
239} Fontcache;
240
241/* Fontcache is an array now. A new font will be appended to the array. */
242static Fontcache *frc = NULL;
243static int frclen = 0;
244static int frccap = 0;
245static char *usedfont = NULL;
246static double usedfontsize = 0;
247static double defaultfontsize = 0;
248
249static char *opt_class = NULL;
250static char **opt_cmd = NULL;
251static char *opt_embed = NULL;
252static char *opt_font = NULL;
253static char *opt_io = NULL;
254static char *opt_line = NULL;
255static char *opt_name = NULL;
256static char *opt_title = NULL;
257
258static uint buttons; /* bit field of pressed buttons */
259
260void
261clipcopy(const Arg *dummy)
262{
263 Atom clipboard;
264
265 free(xsel.clipboard);
266 xsel.clipboard = NULL;
267
268 if (xsel.primary != NULL) {
269 xsel.clipboard = xstrdup(xsel.primary);
270 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
271 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
272 }
273}
274
275void
276clippaste(const Arg *dummy)
277{
278 Atom clipboard;
279
280 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
281 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
282 xw.win, CurrentTime);
283}
284
285void
286selpaste(const Arg *dummy)
287{
288 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
289 xw.win, CurrentTime);
290}
291
292void
293numlock(const Arg *dummy)
294{
295 win.mode ^= MODE_NUMLOCK;
296}
297
298void
299zoom(const Arg *arg)
300{
301 Arg larg;
302
303 larg.f = usedfontsize + arg->f;
304 zoomabs(&larg);
305}
306
307void
308zoomabs(const Arg *arg)
309{
310 xunloadfonts();
311 xloadfonts(usedfont, arg->f);
312 cresize(0, 0);
313 redraw();
314 xhints();
315}
316
317void
318zoomreset(const Arg *arg)
319{
320 Arg larg;
321
322 if (defaultfontsize > 0) {
323 larg.f = defaultfontsize;
324 zoomabs(&larg);
325 }
326}
327
328void
329ttysend(const Arg *arg)
330{
331 ttywrite(arg->s, strlen(arg->s), 1);
332}
333
334int
335evcol(XEvent *e)
336{
337 int x = e->xbutton.x - win.hborderpx;
338 LIMIT(x, 0, win.tw - 1);
339 return x / win.cw;
340}
341
342int
343evrow(XEvent *e)
344{
345 int y = e->xbutton.y - win.vborderpx;
346 LIMIT(y, 0, win.th - 1);
347 return y / win.ch;
348}
349
350void
351mousesel(XEvent *e, int done)
352{
353 int type, seltype = SEL_REGULAR;
354 uint state = e->xbutton.state & ~(Button1Mask | forcemousemod);
355
356 for (type = 1; type < LEN(selmasks); ++type) {
357 if (match(selmasks[type], state)) {
358 seltype = type;
359 break;
360 }
361 }
362 selextend(evcol(e), evrow(e), seltype, done);
363 if (done)
364 setsel(getsel(), e->xbutton.time);
365}
366
367void
368mousereport(XEvent *e)
369{
370 int len, btn, code;
371 int x = evcol(e), y = evrow(e);
372 int state = e->xbutton.state;
373 char buf[40];
374 static int ox, oy;
375
376 if (e->type == MotionNotify) {
377 if (x == ox && y == oy)
378 return;
379 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
380 return;
381 /* MODE_MOUSEMOTION: no reporting if no button is pressed */
382 if (IS_SET(MODE_MOUSEMOTION) && buttons == 0)
383 return;
384 /* Set btn to lowest-numbered pressed button, or 12 if no
385 * buttons are pressed. */
386 for (btn = 1; btn <= 11 && !(buttons & (1<<(btn-1))); btn++)
387 ;
388 code = 32;
389 } else {
390 btn = e->xbutton.button;
391 /* Only buttons 1 through 11 can be encoded */
392 if (btn < 1 || btn > 11)
393 return;
394 if (e->type == ButtonRelease) {
395 /* MODE_MOUSEX10: no button release reporting */
396 if (IS_SET(MODE_MOUSEX10))
397 return;
398 /* Don't send release events for the scroll wheel */
399 if (btn == 4 || btn == 5)
400 return;
401 }
402 code = 0;
403 }
404
405 ox = x;
406 oy = y;
407
408 /* Encode btn into code. If no button is pressed for a motion event in
409 * MODE_MOUSEMANY, then encode it as a release. */
410 if ((!IS_SET(MODE_MOUSESGR) && e->type == ButtonRelease) || btn == 12)
411 code += 3;
412 else if (btn >= 8)
413 code += 128 + btn - 8;
414 else if (btn >= 4)
415 code += 64 + btn - 4;
416 else
417 code += btn - 1;
418
419 if (!IS_SET(MODE_MOUSEX10)) {
420 code += ((state & ShiftMask ) ? 4 : 0)
421 + ((state & Mod1Mask ) ? 8 : 0) /* meta key: alt */
422 + ((state & ControlMask) ? 16 : 0);
423 }
424
425 if (IS_SET(MODE_MOUSESGR)) {
426 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
427 code, x+1, y+1,
428 e->type == ButtonRelease ? 'm' : 'M');
429 } else if (x < 223 && y < 223) {
430 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
431 32+code, 32+x+1, 32+y+1);
432 } else {
433 return;
434 }
435
436 ttywrite(buf, len, 0);
437}
438
439uint
440buttonmask(uint button)
441{
442 return button == Button1 ? Button1Mask
443 : button == Button2 ? Button2Mask
444 : button == Button3 ? Button3Mask
445 : button == Button4 ? Button4Mask
446 : button == Button5 ? Button5Mask
447 : 0;
448}
449
450int
451mouseaction(XEvent *e, uint release)
452{
453 MouseShortcut *ms;
454
455 /* ignore Button<N>mask for Button<N> - it's set on release */
456 uint state = e->xbutton.state & ~buttonmask(e->xbutton.button);
457
458 for (ms = mshortcuts; ms < mshortcuts + LEN(mshortcuts); ms++) {
459 if (ms->release == release &&
460 ms->button == e->xbutton.button &&
461 (match(ms->mod, state) || /* exact or forced */
462 match(ms->mod, state & ~forcemousemod))) {
463 ms->func(&(ms->arg));
464 return 1;
465 }
466 }
467
468 return 0;
469}
470
471void
472bpress(XEvent *e)
473{
474 int btn = e->xbutton.button;
475 struct timespec now;
476 int snap;
477
478 if (1 <= btn && btn <= 11)
479 buttons |= 1 << (btn-1);
480
481 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
482 mousereport(e);
483 return;
484 }
485
486 if (mouseaction(e, 0))
487 return;
488
489 if (btn == Button1) {
490 /*
491 * If the user clicks below predefined timeouts specific
492 * snapping behaviour is exposed.
493 */
494 clock_gettime(CLOCK_MONOTONIC, &now);
495 if (TIMEDIFF(now, xsel.tclick2) <= tripleclicktimeout) {
496 snap = SNAP_LINE;
497 } else if (TIMEDIFF(now, xsel.tclick1) <= doubleclicktimeout) {
498 snap = SNAP_WORD;
499 } else {
500 snap = 0;
501 }
502 xsel.tclick2 = xsel.tclick1;
503 xsel.tclick1 = now;
504
505 selstart(evcol(e), evrow(e), snap);
506 }
507}
508
509void
510propnotify(XEvent *e)
511{
512 XPropertyEvent *xpev;
513 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
514
515 xpev = &e->xproperty;
516 if (xpev->state == PropertyNewValue &&
517 (xpev->atom == XA_PRIMARY ||
518 xpev->atom == clipboard)) {
519 selnotify(e);
520 }
521}
522
523void
524selnotify(XEvent *e)
525{
526 ulong nitems, ofs, rem;
527 int format;
528 uchar *data, *last, *repl;
529 Atom type, incratom, property = None;
530
531 incratom = XInternAtom(xw.dpy, "INCR", 0);
532
533 ofs = 0;
534 if (e->type == SelectionNotify)
535 property = e->xselection.property;
536 else if (e->type == PropertyNotify)
537 property = e->xproperty.atom;
538
539 if (property == None)
540 return;
541
542 do {
543 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
544 BUFSIZ/4, False, AnyPropertyType,
545 &type, &format, &nitems, &rem,
546 &data)) {
547 fprintf(stderr, "Clipboard allocation failed\n");
548 return;
549 }
550
551 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
552 /*
553 * If there is some PropertyNotify with no data, then
554 * this is the signal of the selection owner that all
555 * data has been transferred. We won't need to receive
556 * PropertyNotify events anymore.
557 */
558 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
559 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
560 &xw.attrs);
561 }
562
563 if (type == incratom) {
564 /*
565 * Activate the PropertyNotify events so we receive
566 * when the selection owner does send us the next
567 * chunk of data.
568 */
569 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
570 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
571 &xw.attrs);
572
573 /*
574 * Deleting the property is the transfer start signal.
575 */
576 XDeleteProperty(xw.dpy, xw.win, (int)property);
577 continue;
578 }
579
580 /*
581 * As seen in getsel:
582 * Line endings are inconsistent in the terminal and GUI world
583 * copy and pasting. When receiving some selection data,
584 * replace all '\n' with '\r'.
585 * FIXME: Fix the computer world.
586 */
587 repl = data;
588 last = data + nitems * format / 8;
589 while ((repl = memchr(repl, '\n', last - repl))) {
590 *repl++ = '\r';
591 }
592
593 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
594 ttywrite("\033[200~", 6, 0);
595 ttywrite((char *)data, nitems * format / 8, 1);
596 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
597 ttywrite("\033[201~", 6, 0);
598 XFree(data);
599 /* number of 32-bit chunks returned */
600 ofs += nitems * format / 32;
601 } while (rem > 0);
602
603 /*
604 * Deleting the property again tells the selection owner to send the
605 * next data chunk in the property.
606 */
607 XDeleteProperty(xw.dpy, xw.win, (int)property);
608}
609
610void
611xclipcopy(void)
612{
613 clipcopy(NULL);
614}
615
616void
617selclear_(XEvent *e)
618{
619 selclear();
620}
621
622void
623selrequest(XEvent *e)
624{
625 XSelectionRequestEvent *xsre;
626 XSelectionEvent xev;
627 Atom xa_targets, string, clipboard;
628 char *seltext;
629
630 xsre = (XSelectionRequestEvent *) e;
631 xev.type = SelectionNotify;
632 xev.requestor = xsre->requestor;
633 xev.selection = xsre->selection;
634 xev.target = xsre->target;
635 xev.time = xsre->time;
636 if (xsre->property == None)
637 xsre->property = xsre->target;
638
639 /* reject */
640 xev.property = None;
641
642 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
643 if (xsre->target == xa_targets) {
644 /* respond with the supported type */
645 string = xsel.xtarget;
646 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
647 XA_ATOM, 32, PropModeReplace,
648 (uchar *) &string, 1);
649 xev.property = xsre->property;
650 } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
651 /*
652 * xith XA_STRING non ascii characters may be incorrect in the
653 * requestor. It is not our problem, use utf8.
654 */
655 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
656 if (xsre->selection == XA_PRIMARY) {
657 seltext = xsel.primary;
658 } else if (xsre->selection == clipboard) {
659 seltext = xsel.clipboard;
660 } else {
661 fprintf(stderr,
662 "Unhandled clipboard selection 0x%lx\n",
663 xsre->selection);
664 return;
665 }
666 if (seltext != NULL) {
667 XChangeProperty(xsre->display, xsre->requestor,
668 xsre->property, xsre->target,
669 8, PropModeReplace,
670 (uchar *)seltext, strlen(seltext));
671 xev.property = xsre->property;
672 }
673 }
674
675 /* all done, send a notification to the listener */
676 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
677 fprintf(stderr, "Error sending SelectionNotify event\n");
678}
679
680void
681setsel(char *str, Time t)
682{
683 if (!str)
684 return;
685
686 free(xsel.primary);
687 xsel.primary = str;
688
689 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
690 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
691 selclear();
692}
693
694void
695xsetsel(char *str)
696{
697 setsel(str, CurrentTime);
698}
699
700void
701brelease(XEvent *e)
702{
703 int btn = e->xbutton.button;
704
705 if (1 <= btn && btn <= 11)
706 buttons &= ~(1 << (btn-1));
707
708 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
709 mousereport(e);
710 return;
711 }
712
713 if (mouseaction(e, 1))
714 return;
715 if (btn == Button1)
716 mousesel(e, 1);
717}
718
719void
720bmotion(XEvent *e)
721{
722 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forcemousemod)) {
723 mousereport(e);
724 return;
725 }
726
727 mousesel(e, 0);
728}
729
730void
731cresize(int width, int height)
732{
733 int col, row;
734
735 if (width != 0)
736 win.w = width;
737 if (height != 0)
738 win.h = height;
739
740 col = (win.w - 2 * borderpx) / win.cw;
741 row = (win.h - 2 * borderpx) / win.ch;
742 col = MAX(1, col);
743 row = MAX(1, row);
744
745 win.hborderpx = (win.w - col * win.cw) / 2;
746 win.vborderpx = (win.h - row * win.ch) / 2;
747
748 tresize(col, row);
749 xresize(col, row);
750 ttyresize(win.tw, win.th);
751}
752
753void
754xresize(int col, int row)
755{
756 win.tw = col * win.cw;
757 win.th = row * win.ch;
758
759 XFreePixmap(xw.dpy, xw.buf);
760 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
761 DefaultDepth(xw.dpy, xw.scr));
762 XftDrawChange(xw.draw, xw.buf);
763 xclear(0, 0, win.w, win.h);
764
765 /* resize to new width */
766 xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
767}
768
769ushort
770sixd_to_16bit(int x)
771{
772 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
773}
774
775int
776xloadcolor(int i, const char *name, Color *ncolor)
777{
778 XRenderColor color = { .alpha = 0xffff };
779
780 if (!name) {
781 if (BETWEEN(i, 16, 255)) { /* 256 color */
782 if (i < 6*6*6+16) { /* same colors as xterm */
783 color.red = sixd_to_16bit( ((i-16)/36)%6 );
784 color.green = sixd_to_16bit( ((i-16)/6) %6 );
785 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
786 } else { /* greyscale */
787 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
788 color.green = color.blue = color.red;
789 }
790 return XftColorAllocValue(xw.dpy, xw.vis,
791 xw.cmap, &color, ncolor);
792 } else
793 name = colorname[i];
794 }
795
796 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
797}
798
799void
800xloadcols(void)
801{
802 int i;
803 static int loaded;
804 Color *cp;
805
806 if (loaded) {
807 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
808 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
809 } else {
810 dc.collen = MAX(LEN(colorname), 256);
811 dc.col = xmalloc(dc.collen * sizeof(Color));
812 }
813
814 for (i = 0; i < dc.collen; i++)
815 if (!xloadcolor(i, NULL, &dc.col[i])) {
816 if (colorname[i])
817 die("could not allocate color '%s'\n", colorname[i]);
818 else
819 die("could not allocate color %d\n", i);
820 }
821 loaded = 1;
822}
823
824int
825xgetcolor(int x, unsigned char *r, unsigned char *g, unsigned char *b)
826{
827 if (!BETWEEN(x, 0, dc.collen - 1))
828 return 1;
829
830 *r = dc.col[x].color.red >> 8;
831 *g = dc.col[x].color.green >> 8;
832 *b = dc.col[x].color.blue >> 8;
833
834 return 0;
835}
836
837int
838xsetcolorname(int x, const char *name)
839{
840 Color ncolor;
841
842 if (!BETWEEN(x, 0, dc.collen - 1))
843 return 1;
844
845 if (!xloadcolor(x, name, &ncolor))
846 return 1;
847
848 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
849 dc.col[x] = ncolor;
850
851 return 0;
852}
853
854/*
855 * Absolute coordinates.
856 */
857void
858xclear(int x1, int y1, int x2, int y2)
859{
860 XftDrawRect(xw.draw,
861 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
862 x1, y1, x2-x1, y2-y1);
863}
864
865void
866xhints(void)
867{
868 XClassHint class = {opt_name ? opt_name : termname,
869 opt_class ? opt_class : termname};
870 XWMHints wm = {.flags = InputHint, .input = 1};
871 XSizeHints *sizeh;
872
873 sizeh = XAllocSizeHints();
874
875 sizeh->flags = PSize | PResizeInc | PBaseSize | PMinSize;
876 sizeh->height = win.h;
877 sizeh->width = win.w;
878 sizeh->height_inc = 1;
879 sizeh->width_inc = 1;
880 sizeh->base_height = 2 * borderpx;
881 sizeh->base_width = 2 * borderpx;
882 sizeh->min_height = win.ch + 2 * borderpx;
883 sizeh->min_width = win.cw + 2 * borderpx;
884 if (xw.isfixed) {
885 sizeh->flags |= PMaxSize;
886 sizeh->min_width = sizeh->max_width = win.w;
887 sizeh->min_height = sizeh->max_height = win.h;
888 }
889 if (xw.gm & (XValue|YValue)) {
890 sizeh->flags |= USPosition | PWinGravity;
891 sizeh->x = xw.l;
892 sizeh->y = xw.t;
893 sizeh->win_gravity = xgeommasktogravity(xw.gm);
894 }
895
896 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
897 &class);
898 XFree(sizeh);
899}
900
901int
902xgeommasktogravity(int mask)
903{
904 switch (mask & (XNegative|YNegative)) {
905 case 0:
906 return NorthWestGravity;
907 case XNegative:
908 return NorthEastGravity;
909 case YNegative:
910 return SouthWestGravity;
911 }
912
913 return SouthEastGravity;
914}
915
916int
917xloadfont(Font *f, FcPattern *pattern)
918{
919 FcPattern *configured;
920 FcPattern *match;
921 FcResult result;
922 XGlyphInfo extents;
923 int wantattr, haveattr;
924
925 /*
926 * Manually configure instead of calling XftMatchFont
927 * so that we can use the configured pattern for
928 * "missing glyph" lookups.
929 */
930 configured = FcPatternDuplicate(pattern);
931 if (!configured)
932 return 1;
933
934 FcConfigSubstitute(NULL, configured, FcMatchPattern);
935 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
936
937 match = FcFontMatch(NULL, configured, &result);
938 if (!match) {
939 FcPatternDestroy(configured);
940 return 1;
941 }
942
943 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
944 FcPatternDestroy(configured);
945 FcPatternDestroy(match);
946 return 1;
947 }
948
949 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
950 XftResultMatch)) {
951 /*
952 * Check if xft was unable to find a font with the appropriate
953 * slant but gave us one anyway. Try to mitigate.
954 */
955 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
956 &haveattr) != XftResultMatch) || haveattr < wantattr) {
957 f->badslant = 1;
958 fputs("font slant does not match\n", stderr);
959 }
960 }
961
962 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
963 XftResultMatch)) {
964 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
965 &haveattr) != XftResultMatch) || haveattr != wantattr) {
966 f->badweight = 1;
967 fputs("font weight does not match\n", stderr);
968 }
969 }
970
971 XftTextExtentsUtf8(xw.dpy, f->match,
972 (const FcChar8 *) ascii_printable,
973 strlen(ascii_printable), &extents);
974
975 f->set = NULL;
976 f->pattern = configured;
977
978 f->ascent = f->match->ascent;
979 f->descent = f->match->descent;
980 f->lbearing = 0;
981 f->rbearing = f->match->max_advance_width;
982
983 f->height = f->ascent + f->descent;
984 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
985
986 return 0;
987}
988
989void
990xloadfonts(const char *fontstr, double fontsize)
991{
992 FcPattern *pattern;
993 double fontval;
994
995 if (fontstr[0] == '-')
996 pattern = XftXlfdParse(fontstr, False, False);
997 else
998 pattern = FcNameParse((const FcChar8 *)fontstr);
999
1000 if (!pattern)
1001 die("can't open font %s\n", fontstr);
1002
1003 if (fontsize > 1) {
1004 FcPatternDel(pattern, FC_PIXEL_SIZE);
1005 FcPatternDel(pattern, FC_SIZE);
1006 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
1007 usedfontsize = fontsize;
1008 } else {
1009 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
1010 FcResultMatch) {
1011 usedfontsize = fontval;
1012 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
1013 FcResultMatch) {
1014 usedfontsize = -1;
1015 } else {
1016 /*
1017 * Default font size is 12, if none given. This is to
1018 * have a known usedfontsize value.
1019 */
1020 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
1021 usedfontsize = 12;
1022 }
1023 defaultfontsize = usedfontsize;
1024 }
1025
1026 if (xloadfont(&dc.font, pattern))
1027 die("can't open font %s\n", fontstr);
1028
1029 if (usedfontsize < 0) {
1030 FcPatternGetDouble(dc.font.match->pattern,
1031 FC_PIXEL_SIZE, 0, &fontval);
1032 usedfontsize = fontval;
1033 if (fontsize == 0)
1034 defaultfontsize = fontval;
1035 }
1036
1037 /* Setting character width and height. */
1038 win.cw = ceilf(dc.font.width * cwscale);
1039 win.ch = ceilf(dc.font.height * chscale);
1040
1041 FcPatternDel(pattern, FC_SLANT);
1042 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
1043 if (xloadfont(&dc.ifont, pattern))
1044 die("can't open font %s\n", fontstr);
1045
1046 FcPatternDel(pattern, FC_WEIGHT);
1047 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
1048 if (xloadfont(&dc.ibfont, pattern))
1049 die("can't open font %s\n", fontstr);
1050
1051 FcPatternDel(pattern, FC_SLANT);
1052 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
1053 if (xloadfont(&dc.bfont, pattern))
1054 die("can't open font %s\n", fontstr);
1055
1056 FcPatternDestroy(pattern);
1057}
1058
1059void
1060xunloadfont(Font *f)
1061{
1062 XftFontClose(xw.dpy, f->match);
1063 FcPatternDestroy(f->pattern);
1064 if (f->set)
1065 FcFontSetDestroy(f->set);
1066}
1067
1068void
1069xunloadfonts(void)
1070{
1071 /* Free the loaded fonts in the font cache. */
1072 while (frclen > 0)
1073 XftFontClose(xw.dpy, frc[--frclen].font);
1074
1075 xunloadfont(&dc.font);
1076 xunloadfont(&dc.bfont);
1077 xunloadfont(&dc.ifont);
1078 xunloadfont(&dc.ibfont);
1079}
1080
1081int
1082ximopen(Display *dpy)
1083{
1084 XIMCallback imdestroy = { .client_data = NULL, .callback = ximdestroy };
1085 XICCallback icdestroy = { .client_data = NULL, .callback = xicdestroy };
1086
1087 xw.ime.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
1088 if (xw.ime.xim == NULL)
1089 return 0;
1090
1091 if (XSetIMValues(xw.ime.xim, XNDestroyCallback, &imdestroy, NULL))
1092 fprintf(stderr, "XSetIMValues: "
1093 "Could not set XNDestroyCallback.\n");
1094
1095 xw.ime.spotlist = XVaCreateNestedList(0, XNSpotLocation, &xw.ime.spot,
1096 NULL);
1097
1098 if (xw.ime.xic == NULL) {
1099 xw.ime.xic = XCreateIC(xw.ime.xim, XNInputStyle,
1100 XIMPreeditNothing | XIMStatusNothing,
1101 XNClientWindow, xw.win,
1102 XNDestroyCallback, &icdestroy,
1103 NULL);
1104 }
1105 if (xw.ime.xic == NULL)
1106 fprintf(stderr, "XCreateIC: Could not create input context.\n");
1107
1108 return 1;
1109}
1110
1111void
1112ximinstantiate(Display *dpy, XPointer client, XPointer call)
1113{
1114 if (ximopen(dpy))
1115 XUnregisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1116 ximinstantiate, NULL);
1117}
1118
1119void
1120ximdestroy(XIM xim, XPointer client, XPointer call)
1121{
1122 xw.ime.xim = NULL;
1123 XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1124 ximinstantiate, NULL);
1125 XFree(xw.ime.spotlist);
1126}
1127
1128int
1129xicdestroy(XIC xim, XPointer client, XPointer call)
1130{
1131 xw.ime.xic = NULL;
1132 return 1;
1133}
1134
1135void
1136xinit(int cols, int rows)
1137{
1138 XGCValues gcvalues;
1139 Cursor cursor;
1140 Window parent, root;
1141 pid_t thispid = getpid();
1142 XColor xmousefg, xmousebg;
1143
1144 if (!(xw.dpy = XOpenDisplay(NULL)))
1145 die("can't open display\n");
1146 xw.scr = XDefaultScreen(xw.dpy);
1147 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
1148
1149 /* font */
1150 if (!FcInit())
1151 die("could not init fontconfig.\n");
1152
1153 usedfont = (opt_font == NULL)? font : opt_font;
1154 xloadfonts(usedfont, 0);
1155
1156 /* colors */
1157 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1158 xloadcols();
1159
1160 /* adjust fixed window geometry */
1161 win.w = 2 * win.hborderpx + 2 * borderpx + cols * win.cw;
1162 win.h = 2 * win.vborderpx + 2 * borderpx + rows * win.ch;
1163 if (xw.gm & XNegative)
1164 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
1165 if (xw.gm & YNegative)
1166 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
1167
1168 /* Events */
1169 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
1170 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
1171 xw.attrs.bit_gravity = NorthWestGravity;
1172 xw.attrs.event_mask = FocusChangeMask | KeyPressMask | KeyReleaseMask
1173 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1174 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
1175 xw.attrs.colormap = xw.cmap;
1176
1177 root = XRootWindow(xw.dpy, xw.scr);
1178 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
1179 parent = root;
1180 xw.win = XCreateWindow(xw.dpy, root, xw.l, xw.t,
1181 win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1182 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
1183 | CWEventMask | CWColormap, &xw.attrs);
1184 if (parent != root)
1185 XReparentWindow(xw.dpy, xw.win, parent, xw.l, xw.t);
1186
1187 memset(&gcvalues, 0, sizeof(gcvalues));
1188 gcvalues.graphics_exposures = False;
1189 dc.gc = XCreateGC(xw.dpy, xw.win, GCGraphicsExposures,
1190 &gcvalues);
1191 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
1192 DefaultDepth(xw.dpy, xw.scr));
1193 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
1194 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
1195
1196 /* font spec buffer */
1197 xw.specbuf = xmalloc(cols * sizeof(GlyphFontSpec));
1198
1199 /* Xft rendering context */
1200 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
1201
1202 /* input methods */
1203 if (!ximopen(xw.dpy)) {
1204 XRegisterIMInstantiateCallback(xw.dpy, NULL, NULL, NULL,
1205 ximinstantiate, NULL);
1206 }
1207
1208 /* white cursor, black outline */
1209 cursor = XCreateFontCursor(xw.dpy, mouseshape);
1210 XDefineCursor(xw.dpy, xw.win, cursor);
1211
1212 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
1213 xmousefg.red = 0xffff;
1214 xmousefg.green = 0xffff;
1215 xmousefg.blue = 0xffff;
1216 }
1217
1218 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
1219 xmousebg.red = 0x0000;
1220 xmousebg.green = 0x0000;
1221 xmousebg.blue = 0x0000;
1222 }
1223
1224 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
1225
1226 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1227 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
1228 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
1229 xw.netwmiconname = XInternAtom(xw.dpy, "_NET_WM_ICON_NAME", False);
1230 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
1231
1232 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
1233 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
1234 PropModeReplace, (uchar *)&thispid, 1);
1235
1236 win.mode = MODE_NUMLOCK;
1237 resettitle();
1238 xhints();
1239 XMapWindow(xw.dpy, xw.win);
1240 XSync(xw.dpy, False);
1241
1242 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick1);
1243 clock_gettime(CLOCK_MONOTONIC, &xsel.tclick2);
1244 xsel.primary = NULL;
1245 xsel.clipboard = NULL;
1246 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
1247 if (xsel.xtarget == None)
1248 xsel.xtarget = XA_STRING;
1249}
1250
1251int
1252xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
1253{
1254 float winx = win.hborderpx + x * win.cw, winy = win.vborderpx + y * win.ch, xp, yp;
1255 ushort mode, prevmode = USHRT_MAX;
1256 Font *font = &dc.font;
1257 int frcflags = FRC_NORMAL;
1258 float runewidth = win.cw;
1259 Rune rune;
1260 FT_UInt glyphidx;
1261 FcResult fcres;
1262 FcPattern *fcpattern, *fontpattern;
1263 FcFontSet *fcsets[] = { NULL };
1264 FcCharSet *fccharset;
1265 int i, f, numspecs = 0;
1266
1267 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1268 /* Fetch rune and mode for current glyph. */
1269 rune = glyphs[i].u;
1270 mode = glyphs[i].mode;
1271
1272 /* Skip dummy wide-character spacing. */
1273 if (mode == ATTR_WDUMMY)
1274 continue;
1275
1276 /* Determine font for glyph if different from previous glyph. */
1277 if (prevmode != mode) {
1278 prevmode = mode;
1279 font = &dc.font;
1280 frcflags = FRC_NORMAL;
1281 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1282 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1283 font = &dc.ibfont;
1284 frcflags = FRC_ITALICBOLD;
1285 } else if (mode & ATTR_ITALIC) {
1286 font = &dc.ifont;
1287 frcflags = FRC_ITALIC;
1288 } else if (mode & ATTR_BOLD) {
1289 font = &dc.bfont;
1290 frcflags = FRC_BOLD;
1291 }
1292 yp = winy + font->ascent;
1293 }
1294
1295 /* Lookup character index with default font. */
1296 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1297 if (glyphidx) {
1298 specs[numspecs].font = font->match;
1299 specs[numspecs].glyph = glyphidx;
1300 specs[numspecs].x = (short)xp;
1301 specs[numspecs].y = (short)yp;
1302 xp += runewidth;
1303 numspecs++;
1304 continue;
1305 }
1306
1307 /* Fallback on font cache, search the font cache for match. */
1308 for (f = 0; f < frclen; f++) {
1309 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1310 /* Everything correct. */
1311 if (glyphidx && frc[f].flags == frcflags)
1312 break;
1313 /* We got a default font for a not found glyph. */
1314 if (!glyphidx && frc[f].flags == frcflags
1315 && frc[f].unicodep == rune) {
1316 break;
1317 }
1318 }
1319
1320 /* Nothing was found. Use fontconfig to find matching font. */
1321 if (f >= frclen) {
1322 if (!font->set)
1323 font->set = FcFontSort(0, font->pattern,
1324 1, 0, &fcres);
1325 fcsets[0] = font->set;
1326
1327 /*
1328 * Nothing was found in the cache. Now use
1329 * some dozen of Fontconfig calls to get the
1330 * font for one single character.
1331 *
1332 * Xft and fontconfig are design failures.
1333 */
1334 fcpattern = FcPatternDuplicate(font->pattern);
1335 fccharset = FcCharSetCreate();
1336
1337 FcCharSetAddChar(fccharset, rune);
1338 FcPatternAddCharSet(fcpattern, FC_CHARSET,
1339 fccharset);
1340 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1341
1342 FcConfigSubstitute(0, fcpattern,
1343 FcMatchPattern);
1344 FcDefaultSubstitute(fcpattern);
1345
1346 fontpattern = FcFontSetMatch(0, fcsets, 1,
1347 fcpattern, &fcres);
1348
1349 /* Allocate memory for the new cache entry. */
1350 if (frclen >= frccap) {
1351 frccap += 16;
1352 frc = xrealloc(frc, frccap * sizeof(Fontcache));
1353 }
1354
1355 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1356 fontpattern);
1357 if (!frc[frclen].font)
1358 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1359 strerror(errno));
1360 frc[frclen].flags = frcflags;
1361 frc[frclen].unicodep = rune;
1362
1363 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1364
1365 f = frclen;
1366 frclen++;
1367
1368 FcPatternDestroy(fcpattern);
1369 FcCharSetDestroy(fccharset);
1370 }
1371
1372 specs[numspecs].font = frc[f].font;
1373 specs[numspecs].glyph = glyphidx;
1374 specs[numspecs].x = (short)xp;
1375 specs[numspecs].y = (short)yp;
1376 xp += runewidth;
1377 numspecs++;
1378 }
1379
1380 return numspecs;
1381}
1382
1383void
1384xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1385{
1386 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1387 int winx = win.hborderpx + x * win.cw, winy = win.vborderpx + y * win.ch,
1388 width = charlen * win.cw;
1389 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1390 XRenderColor colfg, colbg;
1391 XRectangle r;
1392
1393 /* Fallback on color display for attributes not supported by the font */
1394 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1395 if (dc.ibfont.badslant || dc.ibfont.badweight)
1396 base.fg = defaultattr;
1397 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1398 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1399 base.fg = defaultattr;
1400 }
1401
1402 if (IS_TRUECOL(base.fg)) {
1403 colfg.alpha = 0xffff;
1404 colfg.red = TRUERED(base.fg);
1405 colfg.green = TRUEGREEN(base.fg);
1406 colfg.blue = TRUEBLUE(base.fg);
1407 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1408 fg = &truefg;
1409 } else {
1410 fg = &dc.col[base.fg];
1411 }
1412
1413 if (IS_TRUECOL(base.bg)) {
1414 colbg.alpha = 0xffff;
1415 colbg.green = TRUEGREEN(base.bg);
1416 colbg.red = TRUERED(base.bg);
1417 colbg.blue = TRUEBLUE(base.bg);
1418 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1419 bg = &truebg;
1420 } else {
1421 bg = &dc.col[base.bg];
1422 }
1423
1424 /* Change basic system colors [0-7] to bright system colors [8-15] */
1425 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1426 fg = &dc.col[base.fg + 8];
1427
1428 if (IS_SET(MODE_REVERSE)) {
1429 if (fg == &dc.col[defaultfg]) {
1430 fg = &dc.col[defaultbg];
1431 } else {
1432 colfg.red = ~fg->color.red;
1433 colfg.green = ~fg->color.green;
1434 colfg.blue = ~fg->color.blue;
1435 colfg.alpha = fg->color.alpha;
1436 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1437 &revfg);
1438 fg = &revfg;
1439 }
1440
1441 if (bg == &dc.col[defaultbg]) {
1442 bg = &dc.col[defaultfg];
1443 } else {
1444 colbg.red = ~bg->color.red;
1445 colbg.green = ~bg->color.green;
1446 colbg.blue = ~bg->color.blue;
1447 colbg.alpha = bg->color.alpha;
1448 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1449 &revbg);
1450 bg = &revbg;
1451 }
1452 }
1453
1454 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1455 colfg.red = fg->color.red / 2;
1456 colfg.green = fg->color.green / 2;
1457 colfg.blue = fg->color.blue / 2;
1458 colfg.alpha = fg->color.alpha;
1459 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1460 fg = &revfg;
1461 }
1462
1463 if (base.mode & ATTR_REVERSE) {
1464 temp = fg;
1465 fg = bg;
1466 bg = temp;
1467 }
1468
1469 if (base.mode & ATTR_BLINK && win.mode & MODE_BLINK)
1470 fg = bg;
1471
1472 if (base.mode & ATTR_INVISIBLE)
1473 fg = bg;
1474
1475 /* Intelligent cleaning up of the borders. */
1476 if (x == 0) {
1477 xclear(0, (y == 0)? 0 : winy, win.hborderpx,
1478 winy + win.ch +
1479 ((winy + win.ch >= win.vborderpx + win.th)? win.h : 0));
1480 }
1481 if (winx + width >= win.hborderpx + win.tw) {
1482 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1483 ((winy + win.ch >= win.vborderpx + win.th)? win.h : (winy + win.ch)));
1484 }
1485 if (y == 0)
1486 xclear(winx, 0, winx + width, win.vborderpx);
1487 if (winy + win.ch >= win.vborderpx + win.th)
1488 xclear(winx, winy + win.ch, winx + width, win.h);
1489
1490 /* Clean up the region we want to draw to. */
1491 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1492
1493 /* Set the clip region because Xft is sometimes dirty. */
1494 r.x = 0;
1495 r.y = 0;
1496 r.height = win.ch;
1497 r.width = width;
1498 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1499
1500 /* Render the glyphs. */
1501 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1502
1503 /* Render underline and strikethrough. */
1504 if (base.mode & ATTR_UNDERLINE) {
1505 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent * chscale + 1,
1506 width, 1);
1507 }
1508
1509 if (base.mode & ATTR_STRUCK) {
1510 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent * chscale / 3,
1511 width, 1);
1512 }
1513
1514 /* Reset clip to none. */
1515 XftDrawSetClip(xw.draw, 0);
1516}
1517
1518void
1519xdrawglyph(Glyph g, int x, int y)
1520{
1521 int numspecs;
1522 XftGlyphFontSpec spec;
1523
1524 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1525 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1526}
1527
1528void
1529xdrawcursor(int cx, int cy, Glyph g, int ox, int oy, Glyph og)
1530{
1531 Color drawcol;
1532
1533 /* remove the old cursor */
1534 if (selected(ox, oy))
1535 og.mode ^= ATTR_REVERSE;
1536 xdrawglyph(og, ox, oy);
1537
1538 if (IS_SET(MODE_HIDE))
1539 return;
1540
1541 /*
1542 * Select the right color for the right mode.
1543 */
1544 g.mode &= ATTR_BOLD|ATTR_ITALIC|ATTR_UNDERLINE|ATTR_STRUCK|ATTR_WIDE;
1545
1546 if (IS_SET(MODE_REVERSE)) {
1547 g.mode |= ATTR_REVERSE;
1548 g.bg = defaultfg;
1549 if (selected(cx, cy)) {
1550 drawcol = dc.col[defaultcs];
1551 g.fg = defaultrcs;
1552 } else {
1553 drawcol = dc.col[defaultrcs];
1554 g.fg = defaultcs;
1555 }
1556 } else {
1557 if (selected(cx, cy)) {
1558 g.fg = defaultfg;
1559 g.bg = defaultrcs;
1560 } else {
1561 g.fg = defaultbg;
1562 g.bg = defaultcs;
1563 }
1564 drawcol = dc.col[g.bg];
1565 }
1566
1567 /* draw the new one */
1568 if (IS_SET(MODE_FOCUSED)) {
1569 switch (win.cursor) {
1570 case 7: /* st extension */
1571 g.u = 0x2603; /* snowman (U+2603) */
1572 /* FALLTHROUGH */
1573 case 0: /* Blinking Block */
1574 case 1: /* Blinking Block (Default) */
1575 case 2: /* Steady Block */
1576 xdrawglyph(g, cx, cy);
1577 break;
1578 case 3: /* Blinking Underline */
1579 case 4: /* Steady Underline */
1580 XftDrawRect(xw.draw, &drawcol,
1581 win.hborderpx + cx * win.cw,
1582 win.vborderpx + (cy + 1) * win.ch - \
1583 cursorthickness,
1584 win.cw, cursorthickness);
1585 break;
1586 case 5: /* Blinking bar */
1587 case 6: /* Steady bar */
1588 XftDrawRect(xw.draw, &drawcol,
1589 win.hborderpx + cx * win.cw,
1590 win.vborderpx + cy * win.ch,
1591 cursorthickness, win.ch);
1592 break;
1593 }
1594 } else {
1595 XftDrawRect(xw.draw, &drawcol,
1596 win.hborderpx + cx * win.cw,
1597 win.vborderpx + cy * win.ch,
1598 win.cw - 1, 1);
1599 XftDrawRect(xw.draw, &drawcol,
1600 win.hborderpx + cx * win.cw,
1601 win.vborderpx + cy * win.ch,
1602 1, win.ch - 1);
1603 XftDrawRect(xw.draw, &drawcol,
1604 win.hborderpx + (cx + 1) * win.cw - 1,
1605 win.vborderpx + cy * win.ch,
1606 1, win.ch - 1);
1607 XftDrawRect(xw.draw, &drawcol,
1608 win.hborderpx + cx * win.cw,
1609 win.vborderpx + (cy + 1) * win.ch - 1,
1610 win.cw, 1);
1611 }
1612}
1613
1614void
1615xsetenv(void)
1616{
1617 char buf[sizeof(long) * 8 + 1];
1618
1619 snprintf(buf, sizeof(buf), "%lu", xw.win);
1620 setenv("WINDOWID", buf, 1);
1621}
1622
1623void
1624xseticontitle(char *p)
1625{
1626 XTextProperty prop;
1627 DEFAULT(p, opt_title);
1628
1629 if (p[0] == '\0')
1630 p = opt_title;
1631
1632 if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1633 &prop) != Success)
1634 return;
1635 XSetWMIconName(xw.dpy, xw.win, &prop);
1636 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmiconname);
1637 XFree(prop.value);
1638}
1639
1640void
1641xsettitle(char *p)
1642{
1643 XTextProperty prop;
1644 DEFAULT(p, opt_title);
1645
1646 if (p[0] == '\0')
1647 p = opt_title;
1648
1649 if (Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1650 &prop) != Success)
1651 return;
1652 XSetWMName(xw.dpy, xw.win, &prop);
1653 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1654 XFree(prop.value);
1655}
1656
1657int
1658xstartdraw(void)
1659{
1660 return IS_SET(MODE_VISIBLE);
1661}
1662
1663void
1664xdrawline(Line line, int x1, int y1, int x2)
1665{
1666 int i, x, ox, numspecs;
1667 Glyph base, new;
1668 XftGlyphFontSpec *specs = xw.specbuf;
1669
1670 numspecs = xmakeglyphfontspecs(specs, &line[x1], x2 - x1, x1, y1);
1671 i = ox = 0;
1672 for (x = x1; x < x2 && i < numspecs; x++) {
1673 new = line[x];
1674 if (new.mode == ATTR_WDUMMY)
1675 continue;
1676 if (selected(x, y1))
1677 new.mode ^= ATTR_REVERSE;
1678 if (i > 0 && ATTRCMP(base, new)) {
1679 xdrawglyphfontspecs(specs, base, i, ox, y1);
1680 specs += i;
1681 numspecs -= i;
1682 i = 0;
1683 }
1684 if (i == 0) {
1685 ox = x;
1686 base = new;
1687 }
1688 i++;
1689 }
1690 if (i > 0)
1691 xdrawglyphfontspecs(specs, base, i, ox, y1);
1692}
1693
1694void
1695xfinishdraw(void)
1696{
1697 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1698 win.h, 0, 0);
1699 XSetForeground(xw.dpy, dc.gc,
1700 dc.col[IS_SET(MODE_REVERSE)?
1701 defaultfg : defaultbg].pixel);
1702}
1703
1704void
1705xximspot(int x, int y)
1706{
1707 if (xw.ime.xic == NULL)
1708 return;
1709
1710 xw.ime.spot.x = borderpx + x * win.cw;
1711 xw.ime.spot.y = borderpx + (y + 1) * win.ch;
1712
1713 XSetICValues(xw.ime.xic, XNPreeditAttributes, xw.ime.spotlist, NULL);
1714}
1715
1716void
1717expose(XEvent *ev)
1718{
1719 redraw();
1720}
1721
1722void
1723visibility(XEvent *ev)
1724{
1725 XVisibilityEvent *e = &ev->xvisibility;
1726
1727 MODBIT(win.mode, e->state != VisibilityFullyObscured, MODE_VISIBLE);
1728}
1729
1730void
1731unmap(XEvent *ev)
1732{
1733 win.mode &= ~MODE_VISIBLE;
1734}
1735
1736void
1737xsetpointermotion(int set)
1738{
1739 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1740 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1741}
1742
1743void
1744xsetmode(int set, unsigned int flags)
1745{
1746 int mode = win.mode;
1747 MODBIT(win.mode, set, flags);
1748 if ((win.mode & MODE_REVERSE) != (mode & MODE_REVERSE))
1749 redraw();
1750}
1751
1752int
1753xsetcursor(int cursor)
1754{
1755 if (!BETWEEN(cursor, 0, 7)) /* 7: st extension */
1756 return 1;
1757 win.cursor = cursor;
1758 return 0;
1759}
1760
1761void
1762xseturgency(int add)
1763{
1764 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1765
1766 MODBIT(h->flags, add, XUrgencyHint);
1767 XSetWMHints(xw.dpy, xw.win, h);
1768 XFree(h);
1769}
1770
1771void
1772xbell(void)
1773{
1774 if (!(IS_SET(MODE_FOCUSED)))
1775 xseturgency(1);
1776 if (bellvolume)
1777 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1778}
1779
1780void
1781focus(XEvent *ev)
1782{
1783 XFocusChangeEvent *e = &ev->xfocus;
1784
1785 if (e->mode == NotifyGrab)
1786 return;
1787
1788 if (ev->type == FocusIn) {
1789 if (xw.ime.xic)
1790 XSetICFocus(xw.ime.xic);
1791 win.mode |= MODE_FOCUSED;
1792 xseturgency(0);
1793 if (IS_SET(MODE_FOCUS))
1794 ttywrite("\033[I", 3, 0);
1795 } else {
1796 if (xw.ime.xic)
1797 XUnsetICFocus(xw.ime.xic);
1798 win.mode &= ~MODE_FOCUSED;
1799 if (IS_SET(MODE_FOCUS))
1800 ttywrite("\033[O", 3, 0);
1801 }
1802}
1803
1804int
1805match(uint mask, uint state)
1806{
1807 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1808}
1809
1810char*
1811kmap(KeySym k, uint state)
1812{
1813 Key *kp;
1814 int i;
1815
1816 /* Check for mapped keys out of X11 function keys. */
1817 for (i = 0; i < LEN(mappedkeys); i++) {
1818 if (mappedkeys[i] == k)
1819 break;
1820 }
1821 if (i == LEN(mappedkeys)) {
1822 if ((k & 0xFFFF) < 0xFD00)
1823 return NULL;
1824 }
1825
1826 for (kp = key; kp < key + LEN(key); kp++) {
1827 if (kp->k != k)
1828 continue;
1829
1830 if (!match(kp->mask, state))
1831 continue;
1832
1833 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1834 continue;
1835 if (IS_SET(MODE_NUMLOCK) && kp->appkey == 2)
1836 continue;
1837
1838 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1839 continue;
1840
1841 return kp->s;
1842 }
1843
1844 return NULL;
1845}
1846
1847void
1848kpress(XEvent *ev)
1849{
1850 XKeyEvent *e = &ev->xkey;
1851 KeySym ksym = NoSymbol;
1852 char buf[64], *customkey;
1853 int len;
1854 Rune c;
1855 Status status;
1856 Shortcut *bp;
1857
1858 if (IS_SET(MODE_KBDLOCK))
1859 return;
1860
1861 if (xw.ime.xic) {
1862 len = XmbLookupString(xw.ime.xic, e, buf, sizeof buf, &ksym, &status);
1863 if (status == XBufferOverflow)
1864 return;
1865 } else {
1866 len = XLookupString(e, buf, sizeof buf, &ksym, NULL);
1867 }
1868 /* 1. shortcuts */
1869 for (bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
1870 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1871 bp->func(&(bp->arg));
1872 return;
1873 }
1874 }
1875
1876 /* 2. custom keys from config.h */
1877 if ((customkey = kmap(ksym, e->state))) {
1878 ttywrite(customkey, strlen(customkey), 1);
1879 return;
1880 }
1881
1882 /* 3. composed string from input method */
1883 if (len == 0)
1884 return;
1885 if (len == 1 && e->state & Mod1Mask) {
1886 if (IS_SET(MODE_8BIT)) {
1887 if (*buf < 0177) {
1888 c = *buf | 0x80;
1889 len = utf8encode(c, buf);
1890 }
1891 } else {
1892 buf[1] = buf[0];
1893 buf[0] = '\033';
1894 len = 2;
1895 }
1896 }
1897 ttywrite(buf, len, 1);
1898}
1899
1900void
1901cmessage(XEvent *e)
1902{
1903 /*
1904 * See xembed specs
1905 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1906 */
1907 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1908 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1909 win.mode |= MODE_FOCUSED;
1910 xseturgency(0);
1911 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1912 win.mode &= ~MODE_FOCUSED;
1913 }
1914 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1915 ttyhangup();
1916 exit(0);
1917 }
1918}
1919
1920void
1921resize(XEvent *e)
1922{
1923 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1924 return;
1925
1926 cresize(e->xconfigure.width, e->xconfigure.height);
1927}
1928
1929void
1930run(void)
1931{
1932 XEvent ev;
1933 int w = win.w, h = win.h;
1934 fd_set rfd;
1935 int xfd = XConnectionNumber(xw.dpy), ttyfd, xev, drawing;
1936 struct timespec seltv, *tv, now, lastblink, trigger;
1937 double timeout;
1938
1939 /* Waiting for window mapping */
1940 do {
1941 XNextEvent(xw.dpy, &ev);
1942 /*
1943 * This XFilterEvent call is required because of XOpenIM. It
1944 * does filter out the key event and some client message for
1945 * the input method too.
1946 */
1947 if (XFilterEvent(&ev, None))
1948 continue;
1949 if (ev.type == ConfigureNotify) {
1950 w = ev.xconfigure.width;
1951 h = ev.xconfigure.height;
1952 }
1953 } while (ev.type != MapNotify);
1954
1955 ttyfd = ttynew(opt_line, shell, opt_io, opt_cmd);
1956 cresize(w, h);
1957
1958 for (timeout = -1, drawing = 0, lastblink = (struct timespec){0};;) {
1959 FD_ZERO(&rfd);
1960 FD_SET(ttyfd, &rfd);
1961 FD_SET(xfd, &rfd);
1962
1963 if (XPending(xw.dpy))
1964 timeout = 0; /* existing events might not set xfd */
1965
1966 seltv.tv_sec = timeout / 1E3;
1967 seltv.tv_nsec = 1E6 * (timeout - 1E3 * seltv.tv_sec);
1968 tv = timeout >= 0 ? &seltv : NULL;
1969
1970 if (pselect(MAX(xfd, ttyfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1971 if (errno == EINTR)
1972 continue;
1973 die("select failed: %s\n", strerror(errno));
1974 }
1975 clock_gettime(CLOCK_MONOTONIC, &now);
1976
1977 if (FD_ISSET(ttyfd, &rfd))
1978 ttyread();
1979
1980 xev = 0;
1981 while (XPending(xw.dpy)) {
1982 xev = 1;
1983 XNextEvent(xw.dpy, &ev);
1984 if (XFilterEvent(&ev, None))
1985 continue;
1986 if (handler[ev.type])
1987 (handler[ev.type])(&ev);
1988 }
1989
1990 /*
1991 * To reduce flicker and tearing, when new content or event
1992 * triggers drawing, we first wait a bit to ensure we got
1993 * everything, and if nothing new arrives - we draw.
1994 * We start with trying to wait minlatency ms. If more content
1995 * arrives sooner, we retry with shorter and shorter periods,
1996 * and eventually draw even without idle after maxlatency ms.
1997 * Typically this results in low latency while interacting,
1998 * maximum latency intervals during `cat huge.txt`, and perfect
1999 * sync with periodic updates from animations/key-repeats/etc.
2000 */
2001 if (FD_ISSET(ttyfd, &rfd) || xev) {
2002 if (!drawing) {
2003 trigger = now;
2004 drawing = 1;
2005 }
2006 timeout = (maxlatency - TIMEDIFF(now, trigger)) \
2007 / maxlatency * minlatency;
2008 if (timeout > 0)
2009 continue; /* we have time, try to find idle */
2010 }
2011
2012 /* idle detected or maxlatency exhausted -> draw */
2013 timeout = -1;
2014 if (blinktimeout && tattrset(ATTR_BLINK)) {
2015 timeout = blinktimeout - TIMEDIFF(now, lastblink);
2016 if (timeout <= 0) {
2017 if (-timeout > blinktimeout) /* start visible */
2018 win.mode |= MODE_BLINK;
2019 win.mode ^= MODE_BLINK;
2020 tsetdirtattr(ATTR_BLINK);
2021 lastblink = now;
2022 timeout = blinktimeout;
2023 }
2024 }
2025
2026 draw();
2027 XFlush(xw.dpy);
2028 drawing = 0;
2029 }
2030}
2031
2032void
2033usage(void)
2034{
2035 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
2036 " [-n name] [-o file]\n"
2037 " [-T title] [-t title] [-w windowid]"
2038 " [[-e] command [args ...]]\n"
2039 " %s [-aiv] [-c class] [-f font] [-g geometry]"
2040 " [-n name] [-o file]\n"
2041 " [-T title] [-t title] [-w windowid] -l line"
2042 " [stty_args ...]\n", argv0, argv0);
2043}
2044
2045int
2046main(int argc, char *argv[])
2047{
2048 xw.l = xw.t = 0;
2049 xw.isfixed = False;
2050 xsetcursor(cursorshape);
2051
2052 ARGBEGIN {
2053 case 'a':
2054 allowaltscreen = 0;
2055 break;
2056 case 'c':
2057 opt_class = EARGF(usage());
2058 break;
2059 case 'e':
2060 if (argc > 0)
2061 --argc, ++argv;
2062 goto run;
2063 case 'f':
2064 opt_font = EARGF(usage());
2065 break;
2066 case 'g':
2067 xw.gm = XParseGeometry(EARGF(usage()),
2068 &xw.l, &xw.t, &cols, &rows);
2069 break;
2070 case 'i':
2071 xw.isfixed = 1;
2072 break;
2073 case 'o':
2074 opt_io = EARGF(usage());
2075 break;
2076 case 'l':
2077 opt_line = EARGF(usage());
2078 break;
2079 case 'n':
2080 opt_name = EARGF(usage());
2081 break;
2082 case 't':
2083 case 'T':
2084 opt_title = EARGF(usage());
2085 break;
2086 case 'w':
2087 opt_embed = EARGF(usage());
2088 break;
2089 case 'v':
2090 die("%s " VERSION "\n", argv0);
2091 break;
2092 default:
2093 usage();
2094 } ARGEND;
2095
2096run:
2097 if (argc > 0) /* eat all remaining arguments */
2098 opt_cmd = argv;
2099
2100 if (!opt_title)
2101 opt_title = (opt_line || !opt_cmd) ? "st" : opt_cmd[0];
2102
2103 setlocale(LC_CTYPE, "");
2104 XSetLocaleModifiers("");
2105 cols = MAX(cols, 1);
2106 rows = MAX(rows, 1);
2107 tnew(cols, rows);
2108 xinit(cols, rows);
2109 xsetenv();
2110 selinit();
2111 run();
2112
2113 return 0;
2114}