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       dwm-systray-20210418-67d76bd.diff (24363B)
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            1 From b9d4791ea3bdfcf3f750e133047345edebea0a70 Mon Sep 17 00:00:00 2001
            2 From: Hritik Vijay <hr1t1k@protonmail.com>
            3 Date: Wed, 17 Feb 2021 19:30:25 +0530
            4 Subject: [PATCH] System tray for dwm
            5 
            6 This patch adds an option for systray placement via `systrayleft`.
            7 
            8 Original author: Jan Christoph Ebersbach <jceb@e-jc.de>, inspired by http://code.google.com/p/dwm-plus
            9 URL: http://dwm.suckless.org/patches/systray
           10 dwm 6.2 port by Igor Gevka <igor.gevka@gmail.com>
           11 ---
           12  config.def.h |   6 +-
           13  dwm.c        | 406 +++++++++++++++++++++++++++++++++++++++++++++++----
           14  2 files changed, 385 insertions(+), 27 deletions(-)
           15 
           16 diff --git a/config.def.h b/config.def.h
           17 index 1c0b587..9e74de2 100644
           18 --- a/config.def.h
           19 +++ b/config.def.h
           20 @@ -3,6 +3,11 @@
           21  /* appearance */
           22  static const unsigned int borderpx  = 1;        /* border pixel of windows */
           23  static const unsigned int snap      = 32;       /* snap pixel */
           24 +static const unsigned int systraypinning = 0;   /* 0: sloppy systray follows selected monitor, >0: pin systray to monitor X */
           25 +static const unsigned int systrayonleft = 0;           /* 0: systray in the right corner, >0: systray on left of status text */
           26 +static const unsigned int systrayspacing = 2;   /* systray spacing */
           27 +static const int systraypinningfailfirst = 1;   /* 1: if pinning fails, display systray on the first monitor, False: display systray on the last monitor*/
           28 +static const int showsystray        = 1;     /* 0 means no systray */
           29  static const int showbar            = 1;        /* 0 means no bar */
           30  static const int topbar             = 1;        /* 0 means bottom bar */
           31  static const char *fonts[]          = { "monospace:size=10" };
           32 @@ -112,4 +117,3 @@ static Button buttons[] = {
           33          { ClkTagBar,            MODKEY,         Button1,        tag,            {0} },
           34          { ClkTagBar,            MODKEY,         Button3,        toggletag,      {0} },
           35  };
           36 -
           37 diff --git a/dwm.c b/dwm.c
           38 index b0b3466..1e2a32d 100644
           39 --- a/dwm.c
           40 +++ b/dwm.c
           41 @@ -57,12 +57,30 @@
           42  #define TAGMASK                 ((1 << LENGTH(tags)) - 1)
           43  #define TEXTW(X)                (drw_fontset_getwidth(drw, (X)) + lrpad)
           44  
           45 +#define SYSTEM_TRAY_REQUEST_DOCK    0
           46 +
           47 +/* XEMBED messages */
           48 +#define XEMBED_EMBEDDED_NOTIFY      0
           49 +#define XEMBED_WINDOW_ACTIVATE      1
           50 +#define XEMBED_FOCUS_IN             4
           51 +#define XEMBED_MODALITY_ON         10
           52 +
           53 +#define XEMBED_MAPPED              (1 << 0)
           54 +#define XEMBED_WINDOW_ACTIVATE      1
           55 +#define XEMBED_WINDOW_DEACTIVATE    2
           56 +
           57 +#define VERSION_MAJOR               0
           58 +#define VERSION_MINOR               0
           59 +#define XEMBED_EMBEDDED_VERSION (VERSION_MAJOR << 16) | VERSION_MINOR
           60 +
           61  /* enums */
           62  enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
           63  enum { SchemeNorm, SchemeSel }; /* color schemes */
           64  enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
           65 +       NetSystemTray, NetSystemTrayOP, NetSystemTrayOrientation, NetSystemTrayOrientationHorz,
           66         NetWMFullscreen, NetActiveWindow, NetWMWindowType,
           67         NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
           68 +enum { Manager, Xembed, XembedInfo, XLast }; /* Xembed atoms */
           69  enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
           70  enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
           71         ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
           72 @@ -141,6 +159,12 @@ typedef struct {
           73          int monitor;
           74  } Rule;
           75  
           76 +typedef struct Systray   Systray;
           77 +struct Systray {
           78 +        Window win;
           79 +        Client *icons;
           80 +};
           81 +
           82  /* function declarations */
           83  static void applyrules(Client *c);
           84  static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
           85 @@ -172,6 +196,7 @@ static void focusstack(const Arg *arg);
           86  static Atom getatomprop(Client *c, Atom prop);
           87  static int getrootptr(int *x, int *y);
           88  static long getstate(Window w);
           89 +static unsigned int getsystraywidth();
           90  static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
           91  static void grabbuttons(Client *c, int focused);
           92  static void grabkeys(void);
           93 @@ -189,13 +214,16 @@ static void pop(Client *);
           94  static void propertynotify(XEvent *e);
           95  static void quit(const Arg *arg);
           96  static Monitor *recttomon(int x, int y, int w, int h);
           97 +static void removesystrayicon(Client *i);
           98  static void resize(Client *c, int x, int y, int w, int h, int interact);
           99 +static void resizebarwin(Monitor *m);
          100  static void resizeclient(Client *c, int x, int y, int w, int h);
          101  static void resizemouse(const Arg *arg);
          102 +static void resizerequest(XEvent *e);
          103  static void restack(Monitor *m);
          104  static void run(void);
          105  static void scan(void);
          106 -static int sendevent(Client *c, Atom proto);
          107 +static int sendevent(Window w, Atom proto, int m, long d0, long d1, long d2, long d3, long d4);
          108  static void sendmon(Client *c, Monitor *m);
          109  static void setclientstate(Client *c, long state);
          110  static void setfocus(Client *c);
          111 @@ -207,6 +235,7 @@ static void seturgent(Client *c, int urg);
          112  static void showhide(Client *c);
          113  static void sigchld(int unused);
          114  static void spawn(const Arg *arg);
          115 +static Monitor *systraytomon(Monitor *m);
          116  static void tag(const Arg *arg);
          117  static void tagmon(const Arg *arg);
          118  static void tile(Monitor *);
          119 @@ -224,18 +253,23 @@ static int updategeom(void);
          120  static void updatenumlockmask(void);
          121  static void updatesizehints(Client *c);
          122  static void updatestatus(void);
          123 +static void updatesystray(void);
          124 +static void updatesystrayicongeom(Client *i, int w, int h);
          125 +static void updatesystrayiconstate(Client *i, XPropertyEvent *ev);
          126  static void updatetitle(Client *c);
          127  static void updatewindowtype(Client *c);
          128  static void updatewmhints(Client *c);
          129  static void view(const Arg *arg);
          130  static Client *wintoclient(Window w);
          131  static Monitor *wintomon(Window w);
          132 +static Client *wintosystrayicon(Window w);
          133  static int xerror(Display *dpy, XErrorEvent *ee);
          134  static int xerrordummy(Display *dpy, XErrorEvent *ee);
          135  static int xerrorstart(Display *dpy, XErrorEvent *ee);
          136  static void zoom(const Arg *arg);
          137  
          138  /* variables */
          139 +static Systray *systray =  NULL;
          140  static const char broken[] = "broken";
          141  static char stext[256];
          142  static int screen;
          143 @@ -258,9 +292,10 @@ static void (*handler[LASTEvent]) (XEvent *) = {
          144          [MapRequest] = maprequest,
          145          [MotionNotify] = motionnotify,
          146          [PropertyNotify] = propertynotify,
          147 +        [ResizeRequest] = resizerequest,
          148          [UnmapNotify] = unmapnotify
          149  };
          150 -static Atom wmatom[WMLast], netatom[NetLast];
          151 +static Atom wmatom[WMLast], netatom[NetLast], xatom[XLast];
          152  static int running = 1;
          153  static Cur *cursor[CurLast];
          154  static Clr **scheme;
          155 @@ -440,7 +475,7 @@ buttonpress(XEvent *e)
          156                          arg.ui = 1 << i;
          157                  } else if (ev->x < x + blw)
          158                          click = ClkLtSymbol;
          159 -                else if (ev->x > selmon->ww - (int)TEXTW(stext))
          160 +                else if (ev->x > selmon->ww - (int)TEXTW(stext) - getsystraywidth())
          161                          click = ClkStatusText;
          162                  else
          163                          click = ClkWinTitle;
          164 @@ -483,6 +518,11 @@ cleanup(void)
          165          XUngrabKey(dpy, AnyKey, AnyModifier, root);
          166          while (mons)
          167                  cleanupmon(mons);
          168 +        if (showsystray) {
          169 +                XUnmapWindow(dpy, systray->win);
          170 +                XDestroyWindow(dpy, systray->win);
          171 +                free(systray);
          172 +        }
          173          for (i = 0; i < CurLast; i++)
          174                  drw_cur_free(drw, cursor[i]);
          175          for (i = 0; i < LENGTH(colors); i++)
          176 @@ -513,9 +553,57 @@ cleanupmon(Monitor *mon)
          177  void
          178  clientmessage(XEvent *e)
          179  {
          180 +        XWindowAttributes wa;
          181 +        XSetWindowAttributes swa;
          182          XClientMessageEvent *cme = &e->xclient;
          183          Client *c = wintoclient(cme->window);
          184  
          185 +        if (showsystray && cme->window == systray->win && cme->message_type == netatom[NetSystemTrayOP]) {
          186 +                /* add systray icons */
          187 +                if (cme->data.l[1] == SYSTEM_TRAY_REQUEST_DOCK) {
          188 +                        if (!(c = (Client *)calloc(1, sizeof(Client))))
          189 +                                die("fatal: could not malloc() %u bytes\n", sizeof(Client));
          190 +                        if (!(c->win = cme->data.l[2])) {
          191 +                                free(c);
          192 +                                return;
          193 +                        }
          194 +                        c->mon = selmon;
          195 +                        c->next = systray->icons;
          196 +                        systray->icons = c;
          197 +                        if (!XGetWindowAttributes(dpy, c->win, &wa)) {
          198 +                                /* use sane defaults */
          199 +                                wa.width = bh;
          200 +                                wa.height = bh;
          201 +                                wa.border_width = 0;
          202 +                        }
          203 +                        c->x = c->oldx = c->y = c->oldy = 0;
          204 +                        c->w = c->oldw = wa.width;
          205 +                        c->h = c->oldh = wa.height;
          206 +                        c->oldbw = wa.border_width;
          207 +                        c->bw = 0;
          208 +                        c->isfloating = True;
          209 +                        /* reuse tags field as mapped status */
          210 +                        c->tags = 1;
          211 +                        updatesizehints(c);
          212 +                        updatesystrayicongeom(c, wa.width, wa.height);
          213 +                        XAddToSaveSet(dpy, c->win);
          214 +                        XSelectInput(dpy, c->win, StructureNotifyMask | PropertyChangeMask | ResizeRedirectMask);
          215 +                        XReparentWindow(dpy, c->win, systray->win, 0, 0);
          216 +                        /* use parents background color */
          217 +                        swa.background_pixel  = scheme[SchemeNorm][ColBg].pixel;
          218 +                        XChangeWindowAttributes(dpy, c->win, CWBackPixel, &swa);
          219 +                        sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_EMBEDDED_NOTIFY, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
          220 +                        /* FIXME not sure if I have to send these events, too */
          221 +                        sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_FOCUS_IN, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
          222 +                        sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_WINDOW_ACTIVATE, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
          223 +                        sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_MODALITY_ON, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
          224 +                        XSync(dpy, False);
          225 +                        resizebarwin(selmon);
          226 +                        updatesystray();
          227 +                        setclientstate(c, NormalState);
          228 +                }
          229 +                return;
          230 +        }
          231          if (!c)
          232                  return;
          233          if (cme->message_type == netatom[NetWMState]) {
          234 @@ -568,7 +656,7 @@ configurenotify(XEvent *e)
          235                                  for (c = m->clients; c; c = c->next)
          236                                          if (c->isfullscreen)
          237                                                  resizeclient(c, m->mx, m->my, m->mw, m->mh);
          238 -                                XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
          239 +                                resizebarwin(m);
          240                          }
          241                          focus(NULL);
          242                          arrange(NULL);
          243 @@ -653,6 +741,11 @@ destroynotify(XEvent *e)
          244  
          245          if ((c = wintoclient(ev->window)))
          246                  unmanage(c, 1);
          247 +        else if ((c = wintosystrayicon(ev->window))) {
          248 +                removesystrayicon(c);
          249 +                resizebarwin(selmon);
          250 +                updatesystray();
          251 +        }
          252  }
          253  
          254  void
          255 @@ -696,19 +789,23 @@ dirtomon(int dir)
          256  void
          257  drawbar(Monitor *m)
          258  {
          259 -        int x, w, tw = 0;
          260 +        int x, w, tw = 0, stw = 0;
          261          int boxs = drw->fonts->h / 9;
          262          int boxw = drw->fonts->h / 6 + 2;
          263          unsigned int i, occ = 0, urg = 0;
          264          Client *c;
          265  
          266 +        if(showsystray && m == systraytomon(m) && !systrayonleft)
          267 +                stw = getsystraywidth();
          268 +
          269          /* draw status first so it can be overdrawn by tags later */
          270          if (m == selmon) { /* status is only drawn on selected monitor */
          271                  drw_setscheme(drw, scheme[SchemeNorm]);
          272 -                tw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
          273 -                drw_text(drw, m->ww - tw, 0, tw, bh, 0, stext, 0);
          274 +                tw = TEXTW(stext) - lrpad / 2 + 2; /* 2px extra right padding */
          275 +                drw_text(drw, m->ww - tw - stw, 0, tw, bh, lrpad / 2 - 2, stext, 0);
          276          }
          277  
          278 +        resizebarwin(m);
          279          for (c = m->clients; c; c = c->next) {
          280                  occ |= c->tags;
          281                  if (c->isurgent)
          282 @@ -729,7 +826,7 @@ drawbar(Monitor *m)
          283          drw_setscheme(drw, scheme[SchemeNorm]);
          284          x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
          285  
          286 -        if ((w = m->ww - tw - x) > bh) {
          287 +        if ((w = m->ww - tw - stw - x) > bh) {
          288                  if (m->sel) {
          289                          drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
          290                          drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
          291 @@ -740,7 +837,7 @@ drawbar(Monitor *m)
          292                          drw_rect(drw, x, 0, w, bh, 1, 1);
          293                  }
          294          }
          295 -        drw_map(drw, m->barwin, 0, 0, m->ww, bh);
          296 +        drw_map(drw, m->barwin, 0, 0, m->ww - stw, bh);
          297  }
          298  
          299  void
          300 @@ -777,8 +874,11 @@ expose(XEvent *e)
          301          Monitor *m;
          302          XExposeEvent *ev = &e->xexpose;
          303  
          304 -        if (ev->count == 0 && (m = wintomon(ev->window)))
          305 +        if (ev->count == 0 && (m = wintomon(ev->window))) {
          306                  drawbar(m);
          307 +                if (m == selmon)
          308 +                        updatesystray();
          309 +        }
          310  }
          311  
          312  void
          313 @@ -863,10 +963,17 @@ getatomprop(Client *c, Atom prop)
          314          unsigned long dl;
          315          unsigned char *p = NULL;
          316          Atom da, atom = None;
          317 +        /* FIXME getatomprop should return the number of items and a pointer to
          318 +         * the stored data instead of this workaround */
          319 +        Atom req = XA_ATOM;
          320 +        if (prop == xatom[XembedInfo])
          321 +                req = xatom[XembedInfo];
          322  
          323 -        if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, XA_ATOM,
          324 +        if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, req,
          325                  &da, &di, &dl, &dl, &p) == Success && p) {
          326                  atom = *(Atom *)p;
          327 +                if (da == xatom[XembedInfo] && dl == 2)
          328 +                        atom = ((Atom *)p)[1];
          329                  XFree(p);
          330          }
          331          return atom;
          332 @@ -900,6 +1007,16 @@ getstate(Window w)
          333          return result;
          334  }
          335  
          336 +unsigned int
          337 +getsystraywidth()
          338 +{
          339 +        unsigned int w = 0;
          340 +        Client *i;
          341 +        if(showsystray)
          342 +                for(i = systray->icons; i; w += i->w + systrayspacing, i = i->next) ;
          343 +        return w ? w + systrayspacing : 1;
          344 +}
          345 +
          346  int
          347  gettextprop(Window w, Atom atom, char *text, unsigned int size)
          348  {
          349 @@ -1004,7 +1121,7 @@ killclient(const Arg *arg)
          350  {
          351          if (!selmon->sel)
          352                  return;
          353 -        if (!sendevent(selmon->sel, wmatom[WMDelete])) {
          354 +        if (!sendevent(selmon->sel->win, wmatom[WMDelete], NoEventMask, wmatom[WMDelete], CurrentTime, 0 , 0, 0)) {
          355                  XGrabServer(dpy);
          356                  XSetErrorHandler(xerrordummy);
          357                  XSetCloseDownMode(dpy, DestroyAll);
          358 @@ -1092,6 +1209,12 @@ maprequest(XEvent *e)
          359  {
          360          static XWindowAttributes wa;
          361          XMapRequestEvent *ev = &e->xmaprequest;
          362 +        Client *i;
          363 +        if ((i = wintosystrayicon(ev->window))) {
          364 +                sendevent(i->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_WINDOW_ACTIVATE, 0, systray->win, XEMBED_EMBEDDED_VERSION);
          365 +                resizebarwin(selmon);
          366 +                updatesystray();
          367 +        }
          368  
          369          if (!XGetWindowAttributes(dpy, ev->window, &wa))
          370                  return;
          371 @@ -1216,6 +1339,16 @@ propertynotify(XEvent *e)
          372          Window trans;
          373          XPropertyEvent *ev = &e->xproperty;
          374  
          375 +        if ((c = wintosystrayicon(ev->window))) {
          376 +                if (ev->atom == XA_WM_NORMAL_HINTS) {
          377 +                        updatesizehints(c);
          378 +                        updatesystrayicongeom(c, c->w, c->h);
          379 +                }
          380 +                else
          381 +                        updatesystrayiconstate(c, ev);
          382 +                resizebarwin(selmon);
          383 +                updatesystray();
          384 +        }
          385          if ((ev->window == root) && (ev->atom == XA_WM_NAME))
          386                  updatestatus();
          387          else if (ev->state == PropertyDelete)
          388 @@ -1266,6 +1399,20 @@ recttomon(int x, int y, int w, int h)
          389          return r;
          390  }
          391  
          392 +void
          393 +removesystrayicon(Client *i)
          394 +{
          395 +        Client **ii;
          396 +
          397 +        if (!showsystray || !i)
          398 +                return;
          399 +        for (ii = &systray->icons; *ii && *ii != i; ii = &(*ii)->next);
          400 +        if (ii)
          401 +                *ii = i->next;
          402 +        free(i);
          403 +}
          404 +
          405 +
          406  void
          407  resize(Client *c, int x, int y, int w, int h, int interact)
          408  {
          409 @@ -1273,6 +1420,14 @@ resize(Client *c, int x, int y, int w, int h, int interact)
          410                  resizeclient(c, x, y, w, h);
          411  }
          412  
          413 +void
          414 +resizebarwin(Monitor *m) {
          415 +        unsigned int w = m->ww;
          416 +        if (showsystray && m == systraytomon(m) && !systrayonleft)
          417 +                w -= getsystraywidth();
          418 +        XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, w, bh);
          419 +}
          420 +
          421  void
          422  resizeclient(Client *c, int x, int y, int w, int h)
          423  {
          424 @@ -1345,6 +1500,19 @@ resizemouse(const Arg *arg)
          425          }
          426  }
          427  
          428 +void
          429 +resizerequest(XEvent *e)
          430 +{
          431 +        XResizeRequestEvent *ev = &e->xresizerequest;
          432 +        Client *i;
          433 +
          434 +        if ((i = wintosystrayicon(ev->window))) {
          435 +                updatesystrayicongeom(i, ev->width, ev->height);
          436 +                resizebarwin(selmon);
          437 +                updatesystray();
          438 +        }
          439 +}
          440 +
          441  void
          442  restack(Monitor *m)
          443  {
          444 @@ -1434,26 +1602,36 @@ setclientstate(Client *c, long state)
          445  }
          446  
          447  int
          448 -sendevent(Client *c, Atom proto)
          449 +sendevent(Window w, Atom proto, int mask, long d0, long d1, long d2, long d3, long d4)
          450  {
          451          int n;
          452 -        Atom *protocols;
          453 +        Atom *protocols, mt;
          454          int exists = 0;
          455          XEvent ev;
          456  
          457 -        if (XGetWMProtocols(dpy, c->win, &protocols, &n)) {
          458 -                while (!exists && n--)
          459 -                        exists = protocols[n] == proto;
          460 -                XFree(protocols);
          461 +        if (proto == wmatom[WMTakeFocus] || proto == wmatom[WMDelete]) {
          462 +                mt = wmatom[WMProtocols];
          463 +                if (XGetWMProtocols(dpy, w, &protocols, &n)) {
          464 +                        while (!exists && n--)
          465 +                                exists = protocols[n] == proto;
          466 +                        XFree(protocols);
          467 +                }
          468 +        }
          469 +        else {
          470 +                exists = True;
          471 +                mt = proto;
          472          }
          473          if (exists) {
          474                  ev.type = ClientMessage;
          475 -                ev.xclient.window = c->win;
          476 -                ev.xclient.message_type = wmatom[WMProtocols];
          477 +                ev.xclient.window = w;
          478 +                ev.xclient.message_type = mt;
          479                  ev.xclient.format = 32;
          480 -                ev.xclient.data.l[0] = proto;
          481 -                ev.xclient.data.l[1] = CurrentTime;
          482 -                XSendEvent(dpy, c->win, False, NoEventMask, &ev);
          483 +                ev.xclient.data.l[0] = d0;
          484 +                ev.xclient.data.l[1] = d1;
          485 +                ev.xclient.data.l[2] = d2;
          486 +                ev.xclient.data.l[3] = d3;
          487 +                ev.xclient.data.l[4] = d4;
          488 +                XSendEvent(dpy, w, False, mask, &ev);
          489          }
          490          return exists;
          491  }
          492 @@ -1467,7 +1645,7 @@ setfocus(Client *c)
          493                          XA_WINDOW, 32, PropModeReplace,
          494                          (unsigned char *) &(c->win), 1);
          495          }
          496 -        sendevent(c, wmatom[WMTakeFocus]);
          497 +        sendevent(c->win, wmatom[WMTakeFocus], NoEventMask, wmatom[WMTakeFocus], CurrentTime, 0, 0, 0);
          498  }
          499  
          500  void
          501 @@ -1556,6 +1734,10 @@ setup(void)
          502          wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
          503          netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
          504          netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
          505 +        netatom[NetSystemTray] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_S0", False);
          506 +        netatom[NetSystemTrayOP] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_OPCODE", False);
          507 +        netatom[NetSystemTrayOrientation] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_ORIENTATION", False);
          508 +        netatom[NetSystemTrayOrientationHorz] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_ORIENTATION_HORZ", False);
          509          netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
          510          netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
          511          netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
          512 @@ -1563,6 +1745,9 @@ setup(void)
          513          netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
          514          netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
          515          netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
          516 +        xatom[Manager] = XInternAtom(dpy, "MANAGER", False);
          517 +        xatom[Xembed] = XInternAtom(dpy, "_XEMBED", False);
          518 +        xatom[XembedInfo] = XInternAtom(dpy, "_XEMBED_INFO", False);
          519          /* init cursors */
          520          cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
          521          cursor[CurResize] = drw_cur_create(drw, XC_sizing);
          522 @@ -1571,6 +1756,8 @@ setup(void)
          523          scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
          524          for (i = 0; i < LENGTH(colors); i++)
          525                  scheme[i] = drw_scm_create(drw, colors[i], 3);
          526 +        /* init system tray */
          527 +        updatesystray();
          528          /* init bars */
          529          updatebars();
          530          updatestatus();
          531 @@ -1704,7 +1891,18 @@ togglebar(const Arg *arg)
          532  {
          533          selmon->showbar = !selmon->showbar;
          534          updatebarpos(selmon);
          535 -        XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
          536 +        resizebarwin(selmon);
          537 +        if (showsystray) {
          538 +                XWindowChanges wc;
          539 +                if (!selmon->showbar)
          540 +                        wc.y = -bh;
          541 +                else if (selmon->showbar) {
          542 +                        wc.y = 0;
          543 +                        if (!selmon->topbar)
          544 +                                wc.y = selmon->mh - bh;
          545 +                }
          546 +                XConfigureWindow(dpy, systray->win, CWY, &wc);
          547 +        }
          548          arrange(selmon);
          549  }
          550  
          551 @@ -1799,11 +1997,18 @@ unmapnotify(XEvent *e)
          552                  else
          553                          unmanage(c, 0);
          554          }
          555 +        else if ((c = wintosystrayicon(ev->window))) {
          556 +                /* KLUDGE! sometimes icons occasionally unmap their windows, but do
          557 +                 * _not_ destroy them. We map those windows back */
          558 +                XMapRaised(dpy, c->win);
          559 +                updatesystray();
          560 +        }
          561  }
          562  
          563  void
          564  updatebars(void)
          565  {
          566 +        unsigned int w;
          567          Monitor *m;
          568          XSetWindowAttributes wa = {
          569                  .override_redirect = True,
          570 @@ -1814,10 +2019,15 @@ updatebars(void)
          571          for (m = mons; m; m = m->next) {
          572                  if (m->barwin)
          573                          continue;
          574 -                m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
          575 +                w = m->ww;
          576 +                if (showsystray && m == systraytomon(m))
          577 +                        w -= getsystraywidth();
          578 +                m->barwin = XCreateWindow(dpy, root, m->wx, m->by, w, bh, 0, DefaultDepth(dpy, screen),
          579                                  CopyFromParent, DefaultVisual(dpy, screen),
          580                                  CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
          581                  XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
          582 +                if (showsystray && m == systraytomon(m))
          583 +                        XMapRaised(dpy, systray->win);
          584                  XMapRaised(dpy, m->barwin);
          585                  XSetClassHint(dpy, m->barwin, &ch);
          586          }
          587 @@ -1993,6 +2203,124 @@ updatestatus(void)
          588          if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
          589                  strcpy(stext, "dwm-"VERSION);
          590          drawbar(selmon);
          591 +        updatesystray();
          592 +}
          593 +
          594 +void
          595 +updatesystrayicongeom(Client *i, int w, int h)
          596 +{
          597 +        if (i) {
          598 +                i->h = bh;
          599 +                if (w == h)
          600 +                        i->w = bh;
          601 +                else if (h == bh)
          602 +                        i->w = w;
          603 +                else
          604 +                        i->w = (int) ((float)bh * ((float)w / (float)h));
          605 +                applysizehints(i, &(i->x), &(i->y), &(i->w), &(i->h), False);
          606 +                /* force icons into the systray dimensions if they don't want to */
          607 +                if (i->h > bh) {
          608 +                        if (i->w == i->h)
          609 +                                i->w = bh;
          610 +                        else
          611 +                                i->w = (int) ((float)bh * ((float)i->w / (float)i->h));
          612 +                        i->h = bh;
          613 +                }
          614 +        }
          615 +}
          616 +
          617 +void
          618 +updatesystrayiconstate(Client *i, XPropertyEvent *ev)
          619 +{
          620 +        long flags;
          621 +        int code = 0;
          622 +
          623 +        if (!showsystray || !i || ev->atom != xatom[XembedInfo] ||
          624 +                        !(flags = getatomprop(i, xatom[XembedInfo])))
          625 +                return;
          626 +
          627 +        if (flags & XEMBED_MAPPED && !i->tags) {
          628 +                i->tags = 1;
          629 +                code = XEMBED_WINDOW_ACTIVATE;
          630 +                XMapRaised(dpy, i->win);
          631 +                setclientstate(i, NormalState);
          632 +        }
          633 +        else if (!(flags & XEMBED_MAPPED) && i->tags) {
          634 +                i->tags = 0;
          635 +                code = XEMBED_WINDOW_DEACTIVATE;
          636 +                XUnmapWindow(dpy, i->win);
          637 +                setclientstate(i, WithdrawnState);
          638 +        }
          639 +        else
          640 +                return;
          641 +        sendevent(i->win, xatom[Xembed], StructureNotifyMask, CurrentTime, code, 0,
          642 +                        systray->win, XEMBED_EMBEDDED_VERSION);
          643 +}
          644 +
          645 +void
          646 +updatesystray(void)
          647 +{
          648 +        XSetWindowAttributes wa;
          649 +        XWindowChanges wc;
          650 +        Client *i;
          651 +        Monitor *m = systraytomon(NULL);
          652 +        unsigned int x = m->mx + m->mw;
          653 +        unsigned int sw = TEXTW(stext) - lrpad + systrayspacing;
          654 +        unsigned int w = 1;
          655 +
          656 +        if (!showsystray)
          657 +                return;
          658 +        if (systrayonleft)
          659 +                x -= sw + lrpad / 2;
          660 +        if (!systray) {
          661 +                /* init systray */
          662 +                if (!(systray = (Systray *)calloc(1, sizeof(Systray))))
          663 +                        die("fatal: could not malloc() %u bytes\n", sizeof(Systray));
          664 +                systray->win = XCreateSimpleWindow(dpy, root, x, m->by, w, bh, 0, 0, scheme[SchemeSel][ColBg].pixel);
          665 +                wa.event_mask        = ButtonPressMask | ExposureMask;
          666 +                wa.override_redirect = True;
          667 +                wa.background_pixel  = scheme[SchemeNorm][ColBg].pixel;
          668 +                XSelectInput(dpy, systray->win, SubstructureNotifyMask);
          669 +                XChangeProperty(dpy, systray->win, netatom[NetSystemTrayOrientation], XA_CARDINAL, 32,
          670 +                                PropModeReplace, (unsigned char *)&netatom[NetSystemTrayOrientationHorz], 1);
          671 +                XChangeWindowAttributes(dpy, systray->win, CWEventMask|CWOverrideRedirect|CWBackPixel, &wa);
          672 +                XMapRaised(dpy, systray->win);
          673 +                XSetSelectionOwner(dpy, netatom[NetSystemTray], systray->win, CurrentTime);
          674 +                if (XGetSelectionOwner(dpy, netatom[NetSystemTray]) == systray->win) {
          675 +                        sendevent(root, xatom[Manager], StructureNotifyMask, CurrentTime, netatom[NetSystemTray], systray->win, 0, 0);
          676 +                        XSync(dpy, False);
          677 +                }
          678 +                else {
          679 +                        fprintf(stderr, "dwm: unable to obtain system tray.\n");
          680 +                        free(systray);
          681 +                        systray = NULL;
          682 +                        return;
          683 +                }
          684 +        }
          685 +        for (w = 0, i = systray->icons; i; i = i->next) {
          686 +                /* make sure the background color stays the same */
          687 +                wa.background_pixel  = scheme[SchemeNorm][ColBg].pixel;
          688 +                XChangeWindowAttributes(dpy, i->win, CWBackPixel, &wa);
          689 +                XMapRaised(dpy, i->win);
          690 +                w += systrayspacing;
          691 +                i->x = w;
          692 +                XMoveResizeWindow(dpy, i->win, i->x, 0, i->w, i->h);
          693 +                w += i->w;
          694 +                if (i->mon != m)
          695 +                        i->mon = m;
          696 +        }
          697 +        w = w ? w + systrayspacing : 1;
          698 +        x -= w;
          699 +        XMoveResizeWindow(dpy, systray->win, x, m->by, w, bh);
          700 +        wc.x = x; wc.y = m->by; wc.width = w; wc.height = bh;
          701 +        wc.stack_mode = Above; wc.sibling = m->barwin;
          702 +        XConfigureWindow(dpy, systray->win, CWX|CWY|CWWidth|CWHeight|CWSibling|CWStackMode, &wc);
          703 +        XMapWindow(dpy, systray->win);
          704 +        XMapSubwindows(dpy, systray->win);
          705 +        /* redraw background */
          706 +        XSetForeground(dpy, drw->gc, scheme[SchemeNorm][ColBg].pixel);
          707 +        XFillRectangle(dpy, systray->win, drw->gc, 0, 0, w, bh);
          708 +        XSync(dpy, False);
          709  }
          710  
          711  void
          712 @@ -2060,6 +2388,16 @@ wintoclient(Window w)
          713          return NULL;
          714  }
          715  
          716 +Client *
          717 +wintosystrayicon(Window w) {
          718 +        Client *i = NULL;
          719 +
          720 +        if (!showsystray || !w)
          721 +                return i;
          722 +        for (i = systray->icons; i && i->win != w; i = i->next) ;
          723 +        return i;
          724 +}
          725 +
          726  Monitor *
          727  wintomon(Window w)
          728  {
          729 @@ -2113,6 +2451,22 @@ xerrorstart(Display *dpy, XErrorEvent *ee)
          730          return -1;
          731  }
          732  
          733 +Monitor *
          734 +systraytomon(Monitor *m) {
          735 +        Monitor *t;
          736 +        int i, n;
          737 +        if(!systraypinning) {
          738 +                if(!m)
          739 +                        return selmon;
          740 +                return m == selmon ? m : NULL;
          741 +        }
          742 +        for(n = 1, t = mons; t && t->next; n++, t = t->next) ;
          743 +        for(i = 1, t = mons; t && t->next && i < systraypinning; i++, t = t->next) ;
          744 +        if(systraypinningfailfirst && n < systraypinning)
          745 +                return mons;
          746 +        return t;
          747 +}
          748 +
          749  void
          750  zoom(const Arg *arg)
          751  {
          752 -- 
          753 2.31.0
          754