URI: 
       systray - dwm - dynamic window manager
  HTML git clone https://git.parazyd.org/dwm
   DIR Log
   DIR Files
   DIR Refs
   DIR README
   DIR LICENSE
       ---
   DIR commit e250e8dce3c926caaacf1555ef4763aee3eb8109
   DIR parent cb0f4a25dbf8d19cca950e67fb5da0b6c2a5b408
  HTML Author: parazyd <parazyd@dyne.org>
       Date:   Sun, 24 Apr 2022 00:08:19 +0200
       
       systray
       
       Diffstat:
         M config.def.h                        |      13 +++++++++----
         M config.h                            |       5 +++++
         M dwm.c                               |     422 ++++++++++++++++++++++++++++---
       
       3 files changed, 405 insertions(+), 35 deletions(-)
       ---
   DIR diff --git a/config.def.h b/config.def.h
       @@ -3,8 +3,13 @@
        /* appearance */
        static const unsigned int borderpx  = 1;        /* border pixel of windows */
        static const unsigned int snap      = 32;       /* snap pixel */
       -static const int showbar            = 1;        /* 0 means no bar */
       -static const int topbar             = 1;        /* 0 means bottom bar */
       +static const unsigned int systraypinning = 0;   /* 0: sloppy systray follows selected monitor, >0: pin systray to monitor X */
       +static const unsigned int systrayonleft = 0;           /* 0: systray in the right corner, >0: systray on left of status text */
       +static const unsigned int systrayspacing = 2;   /* systray spacing */
       +static const int systraypinningfailfirst = 1;   /* 1: if pinning fails, display systray on the first monitor, False: display systray on the last monitor*/
       +static const int showsystray        = 1;     /* 0 means no systray */
       +static const int showbar            = 1;     /* 0 means no bar */
       +static const int topbar             = 1;     /* 0 means bottom bar */
        static const char *fonts[]          = { "monospace:size=10" };
        static const char dmenufont[]       = "monospace:size=10";
        static const char col_gray1[]       = "#222222";
       @@ -104,8 +109,8 @@ static const Key keys[] = {
        /* click can be ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle, ClkClientWin, or ClkRootWin */
        static const Button buttons[] = {
                /* click                event mask      button          function        argument */
       -        { ClkLtSymbol,          0,              Button1,        setlayout,      {0} },
       -        { ClkLtSymbol,          0,              Button3,        setlayout,      {.v = &layouts[2]} },
       +        { ClkTagBar,            MODKEY,         Button1,        tag,            {0} },
       +        { ClkTagBar,            MODKEY,         Button3,        toggletag,      {0} },
                { ClkWinTitle,          0,              Button2,        zoom,           {0} },
                { ClkStatusText,        0,              Button2,        spawn,          {.v = termcmd } },
                { ClkClientWin,         MODKEY,         Button1,        movemouse,      {0} },
   DIR diff --git a/config.h b/config.h
       @@ -3,6 +3,11 @@
        /* appearance */
        static const unsigned int borderpx  = 1;        /* border pixel of windows */
        static const unsigned int snap      = 32;       /* snap pixel */
       +static const unsigned int systraypinning = 0;
       +static const unsigned int systrayonleft = 0;
       +static const unsigned int systrayspacing = 2;
       +static const int systraypinningfailfirst = 1;
       +static const int showsystray = 1;
        static const int showbar            = 1;        /* 0 means no bar */
        static const int topbar             = 1;        /* 0 means bottom bar */
        static const char *fonts[]          = { "xos4 Terminus:size=10" };
   DIR diff --git a/dwm.c b/dwm.c
       @@ -57,12 +57,27 @@
        #define TAGMASK                 ((1 << LENGTH(tags)) - 1)
        #define TEXTW(X)                (drw_fontset_getwidth(drw, (X)) + lrpad)
        
       +#define SYSTEM_TRAY_REQUEST_DOCK    0
       +/* XEMBED messages */
       +#define XEMBED_EMBEDDED_NOTIFY      0
       +#define XEMBED_WINDOW_ACTIVATE      1
       +#define XEMBED_FOCUS_IN             4
       +#define XEMBED_MODALITY_ON         10
       +#define XEMBED_MAPPED              (1 << 0)
       +#define XEMBED_WINDOW_ACTIVATE      1
       +#define XEMBED_WINDOW_DEACTIVATE    2
       +#define VERSION_MAJOR               0
       +#define VERSION_MINOR               0
       +#define XEMBED_EMBEDDED_VERSION (VERSION_MAJOR << 16) | VERSION_MINOR
       +
        /* enums */
        enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
        enum { SchemeNorm, SchemeSel }; /* color schemes */
        enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
       +       NetSystemTray, NetSystemTrayOP, NetSystemTrayOrientation, NetSystemTrayOrientationHorz,
               NetWMFullscreen, NetActiveWindow, NetWMWindowType,
               NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
       +enum { Manager, Xembed, XembedInfo, XLast }; /* Xembed atoms */
        enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
        enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
               ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
       @@ -143,6 +158,12 @@ typedef struct {
                int monitor;
        } Rule;
        
       +typedef struct Systray   Systray;
       +struct Systray {
       +        Window win;
       +        Client *icons;
       +};
       +
        /* function declarations */
        static void applyrules(Client *c);
        static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
       @@ -174,6 +195,7 @@ static void focusstack(const Arg *arg);
        static Atom getatomprop(Client *c, Atom prop);
        static int getrootptr(int *x, int *y);
        static long getstate(Window w);
       +static unsigned int getsystraywidth();
        static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
        static void grabbuttons(Client *c, int focused);
        static void grabkeys(void);
       @@ -191,13 +213,16 @@ static void pop(Client *c);
        static void propertynotify(XEvent *e);
        static void quit(const Arg *arg);
        static Monitor *recttomon(int x, int y, int w, int h);
       +static void removesystrayicon(Client *i);
        static void resize(Client *c, int x, int y, int w, int h, int interact);
       +static void resizebarwin(Monitor *m);
        static void resizeclient(Client *c, int x, int y, int w, int h);
        static void resizemouse(const Arg *arg);
       +static void resizerequest(XEvent *e);
        static void restack(Monitor *m);
        static void run(void);
        static void scan(void);
       -static int sendevent(Client *c, Atom proto);
       +static int sendevent(Window w, Atom proto, int m, long d0, long d1, long d2, long d3, long d4);
        static void sendmon(Client *c, Monitor *m);
        static void setclientstate(Client *c, long state);
        static void setfocus(Client *c);
       @@ -208,6 +233,7 @@ static void setup(void);
        static void seturgent(Client *c, int urg);
        static void showhide(Client *c);
        static void spawn(const Arg *arg);
       +static Monitor *systraytomon(Monitor *m);
        static void tag(const Arg *arg);
        static void tagmon(const Arg *arg);
        static void tile(Monitor *m);
       @@ -226,18 +252,23 @@ static int updategeom(void);
        static void updatenumlockmask(void);
        static void updatesizehints(Client *c);
        static void updatestatus(void);
       +static void updatesystray(void);
       +static void updatesystrayicongeom(Client *i, int w, int h);
       +static void updatesystrayiconstate(Client *i, XPropertyEvent *ev);
        static void updatetitle(Client *c);
        static void updatewindowtype(Client *c);
        static void updatewmhints(Client *c);
        static void view(const Arg *arg);
        static Client *wintoclient(Window w);
        static Monitor *wintomon(Window w);
       +static Client *wintosystrayicon(Window w);
        static int xerror(Display *dpy, XErrorEvent *ee);
        static int xerrordummy(Display *dpy, XErrorEvent *ee);
        static int xerrorstart(Display *dpy, XErrorEvent *ee);
        static void zoom(const Arg *arg);
        
        /* variables */
       +static Systray *systray = NULL;
        static const char broken[] = "broken";
        static char stext[256];
        static int screen;
       @@ -260,9 +291,10 @@ static void (*handler[LASTEvent]) (XEvent *) = {
                [MapRequest] = maprequest,
                [MotionNotify] = motionnotify,
                [PropertyNotify] = propertynotify,
       +    [ResizeRequest] = resizerequest,
                [UnmapNotify] = unmapnotify
        };
       -static Atom wmatom[WMLast], netatom[NetLast];
       +static Atom wmatom[WMLast], netatom[NetLast], xatom[XLast];
        static int running = 1;
        static Cur *cursor[CurLast];
        static Clr **scheme;
       @@ -455,7 +487,7 @@ buttonpress(XEvent *e)
                                arg.ui = 1 << i;
                        } else if (ev->x < x + TEXTW(selmon->ltsymbol))
                                click = ClkLtSymbol;
       -                else if (ev->x > selmon->ww - (int)TEXTW(stext))
       +                else if (ev->x > selmon->ww - (int)TEXTW(stext) - getsystraywidth())
                                click = ClkStatusText;
                        else
                                click = ClkWinTitle;
       @@ -498,7 +530,14 @@ cleanup(void)
                XUngrabKey(dpy, AnyKey, AnyModifier, root);
                while (mons)
                        cleanupmon(mons);
       -        for (i = 0; i < CurLast; i++)
       +
       +        if (showsystray) {
       +                XUnmapWindow(dpy, systray->win);
       +                XDestroyWindow(dpy, systray->win);
       +                free(systray);
       +        }
       +
       +    for (i = 0; i < CurLast; i++)
                        drw_cur_free(drw, cursor[i]);
                for (i = 0; i < LENGTH(colors); i++)
                        free(scheme[i]);
       @@ -529,9 +568,58 @@ cleanupmon(Monitor *mon)
        void
        clientmessage(XEvent *e)
        {
       +        XWindowAttributes wa;
       +        XSetWindowAttributes swa;
                XClientMessageEvent *cme = &e->xclient;
                Client *c = wintoclient(cme->window);
        
       +        if (showsystray && cme->window == systray->win && cme->message_type == netatom[NetSystemTrayOP]) {
       +                /* add systray icons */
       +                if (cme->data.l[1] == SYSTEM_TRAY_REQUEST_DOCK) {
       +                        if (!(c = (Client *)calloc(1, sizeof(Client))))
       +                                die("fatal: could not malloc() %u bytes\n", sizeof(Client));
       +                        if (!(c->win = cme->data.l[2])) {
       +                                free(c);
       +                                return;
       +                        }
       +                        c->mon = selmon;
       +                        c->next = systray->icons;
       +                        systray->icons = c;
       +                        if (!XGetWindowAttributes(dpy, c->win, &wa)) {
       +                                /* use sane defaults */
       +                                wa.width = bh;
       +                                wa.height = bh;
       +                                wa.border_width = 0;
       +                        }
       +                        c->x = c->oldx = c->y = c->oldy = 0;
       +                        c->w = c->oldw = wa.width;
       +                        c->h = c->oldh = wa.height;
       +                        c->oldbw = wa.border_width;
       +                        c->bw = 0;
       +                        c->isfloating = True;
       +                        /* reuse tags field as mapped status */
       +                        c->tags = 1;
       +                        updatesizehints(c);
       +                        updatesystrayicongeom(c, wa.width, wa.height);
       +                        XAddToSaveSet(dpy, c->win);
       +                        XSelectInput(dpy, c->win, StructureNotifyMask | PropertyChangeMask | ResizeRedirectMask);
       +                        XReparentWindow(dpy, c->win, systray->win, 0, 0);
       +                        /* use parents background color */
       +                        swa.background_pixel  = scheme[SchemeNorm][ColBg].pixel;
       +                        XChangeWindowAttributes(dpy, c->win, CWBackPixel, &swa);
       +                        sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_EMBEDDED_NOTIFY, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
       +                        /* FIXME not sure if I have to send these events, too */
       +                        sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_FOCUS_IN, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
       +                        sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_WINDOW_ACTIVATE, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
       +                        sendevent(c->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_MODALITY_ON, 0 , systray->win, XEMBED_EMBEDDED_VERSION);
       +                        XSync(dpy, False);
       +                        resizebarwin(selmon);
       +                        updatesystray();
       +                        setclientstate(c, NormalState);
       +                }
       +                return;
       +        }
       +
                if (!c)
                        return;
                if (cme->message_type == netatom[NetWMState]) {
       @@ -584,7 +672,7 @@ configurenotify(XEvent *e)
                                        for (c = m->clients; c; c = c->next)
                                                if (c->isfullscreen)
                                                        resizeclient(c, m->mx, m->my, m->mw, m->mh);
       -                                XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
       +                                resizebarwin(m);
                                }
                                focus(NULL);
                                arrange(NULL);
       @@ -684,6 +772,11 @@ destroynotify(XEvent *e)
        
                if ((c = wintoclient(ev->window)))
                        unmanage(c, 1);
       +        else if ((c = wintosystrayicon(ev->window))) {
       +                removesystrayicon(c);
       +                resizebarwin(selmon);
       +                updatesystray();
       +        }
        }
        
        void
       @@ -727,7 +820,7 @@ dirtomon(int dir)
        void
        drawbar(Monitor *m)
        {
       -        int x, w, tw = 0;
       +        int x, w, tw = 0, stw = 0;
                int boxs = drw->fonts->h / 9;
                int boxw = drw->fonts->h / 6 + 2;
                unsigned int i, occ = 0, urg = 0;
       @@ -736,13 +829,17 @@ drawbar(Monitor *m)
                if (!m->showbar)
                        return;
        
       +        if(showsystray && m == systraytomon(m) && !systrayonleft)
       +                stw = getsystraywidth();
       +
                /* draw status first so it can be overdrawn by tags later */
                if (m == selmon) { /* status is only drawn on selected monitor */
                        drw_setscheme(drw, scheme[SchemeNorm]);
       -                tw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
       -                drw_text(drw, m->ww - tw, 0, tw, bh, 0, stext, 0);
       +                tw = TEXTW(stext) - lrpad / 2 + 2; /* 2px extra right padding */
       +                drw_text(drw, m->ww - tw - stw, 0, tw, bh, lrpad / 2 - 2, stext, 0);
                }
        
       +        resizebarwin(m);
                for (c = m->clients; c; c = c->next) {
                        occ |= c->tags;
                        if (c->isurgent)
       @@ -763,7 +860,7 @@ drawbar(Monitor *m)
                drw_setscheme(drw, scheme[SchemeNorm]);
                x = drw_text(drw, x, 0, w, bh, lrpad / 2, m->ltsymbol, 0);
        
       -        if ((w = m->ww - tw - x) > bh) {
       +        if ((w = m->ww - tw - stw - x) > bh) {
                        if (m->sel) {
                                drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
                                drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
       @@ -774,7 +871,7 @@ drawbar(Monitor *m)
                                drw_rect(drw, x, 0, w, bh, 1, 1);
                        }
                }
       -        drw_map(drw, m->barwin, 0, 0, m->ww, bh);
       +        drw_map(drw, m->barwin, 0, 0, m->ww - stw, bh);
        }
        
        void
       @@ -811,8 +908,11 @@ expose(XEvent *e)
                Monitor *m;
                XExposeEvent *ev = &e->xexpose;
        
       -        if (ev->count == 0 && (m = wintomon(ev->window)))
       +        if (ev->count == 0 && (m = wintomon(ev->window))) {
                        drawbar(m);
       +                if (m == selmon)
       +                        updatesystray();
       +        }
        }
        
        void
       @@ -898,9 +998,17 @@ getatomprop(Client *c, Atom prop)
                unsigned char *p = NULL;
                Atom da, atom = None;
        
       -        if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, XA_ATOM,
       +        /* FIXME getatomprop should return the number of items and a pointer to
       +         * the stored data instead of this workaround */
       +        Atom req = XA_ATOM;
       +        if (prop == xatom[XembedInfo])
       +                req = xatom[XembedInfo];
       +
       +        if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, req,
                        &da, &di, &dl, &dl, &p) == Success && p) {
                        atom = *(Atom *)p;
       +                if (da == xatom[XembedInfo] && dl == 2)
       +                        atom = ((Atom *)p)[1];
                        XFree(p);
                }
                return atom;
       @@ -934,6 +1042,16 @@ getstate(Window w)
                return result;
        }
        
       +unsigned int
       +getsystraywidth()
       +{
       +        unsigned int w = 0;
       +        Client *i;
       +        if(showsystray)
       +                for(i = systray->icons; i; w += i->w + systrayspacing, i = i->next) ;
       +        return w ? w + systrayspacing : 1;
       +}
       +
        int
        gettextprop(Window w, Atom atom, char *text, unsigned int size)
        {
       @@ -1046,7 +1164,8 @@ killclient(const Arg *arg)
        {
                if (!selmon->sel)
                        return;
       -        if (!sendevent(selmon->sel, wmatom[WMDelete])) {
       +
       +        if (!sendevent(selmon->sel->win, wmatom[WMDelete], NoEventMask, wmatom[WMDelete], CurrentTime, 0 , 0, 0)) {
                        XGrabServer(dpy);
                        XSetErrorHandler(xerrordummy);
                        XSetCloseDownMode(dpy, DestroyAll);
       @@ -1141,8 +1260,16 @@ maprequest(XEvent *e)
                static XWindowAttributes wa;
                XMapRequestEvent *ev = &e->xmaprequest;
        
       +        Client *i;
       +        if ((i = wintosystrayicon(ev->window))) {
       +                sendevent(i->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_WINDOW_ACTIVATE, 0, systray->win, XEMBED_EMBEDDED_VERSION);
       +                resizebarwin(selmon);
       +                updatesystray();
       +        }
       +
                if (!XGetWindowAttributes(dpy, ev->window, &wa) || wa.override_redirect)
                        return;
       +
                if (!wintoclient(ev->window))
                        manage(ev->window, &wa);
        }
       @@ -1262,7 +1389,18 @@ propertynotify(XEvent *e)
                Window trans;
                XPropertyEvent *ev = &e->xproperty;
        
       -        if ((ev->window == root) && (ev->atom == XA_WM_NAME))
       +        if ((c = wintosystrayicon(ev->window))) {
       +                if (ev->atom == XA_WM_NORMAL_HINTS) {
       +                        updatesizehints(c);
       +                        updatesystrayicongeom(c, c->w, c->h);
       +                }
       +                else
       +                        updatesystrayiconstate(c, ev);
       +                resizebarwin(selmon);
       +                updatesystray();
       +        }
       +
       +    if ((ev->window == root) && (ev->atom == XA_WM_NAME))
                        updatestatus();
                else if (ev->state == PropertyDelete)
                        return; /* ignore */
       @@ -1313,6 +1451,19 @@ recttomon(int x, int y, int w, int h)
        }
        
        void
       +removesystrayicon(Client *i)
       +{
       +        Client **ii;
       +
       +        if (!showsystray || !i)
       +                return;
       +        for (ii = &systray->icons; *ii && *ii != i; ii = &(*ii)->next);
       +        if (ii)
       +                *ii = i->next;
       +        free(i);
       +}
       +
       +void
        resize(Client *c, int x, int y, int w, int h, int interact)
        {
                if (applysizehints(c, &x, &y, &w, &h, interact))
       @@ -1320,6 +1471,14 @@ resize(Client *c, int x, int y, int w, int h, int interact)
        }
        
        void
       +resizebarwin(Monitor *m) {
       +        unsigned int w = m->ww;
       +        if (showsystray && m == systraytomon(m) && !systrayonleft)
       +                w -= getsystraywidth();
       +        XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, w, bh);
       +}
       +
       +void
        resizeclient(Client *c, int x, int y, int w, int h)
        {
                XWindowChanges wc;
       @@ -1392,6 +1551,19 @@ resizemouse(const Arg *arg)
        }
        
        void
       +resizerequest(XEvent *e)
       +{
       +        XResizeRequestEvent *ev = &e->xresizerequest;
       +        Client *i;
       +
       +        if ((i = wintosystrayicon(ev->window))) {
       +                updatesystrayicongeom(i, ev->width, ev->height);
       +                resizebarwin(selmon);
       +                updatesystray();
       +        }
       +}
       +
       +void
        restack(Monitor *m)
        {
                Client *c;
       @@ -1480,26 +1652,37 @@ setclientstate(Client *c, long state)
        }
        
        int
       -sendevent(Client *c, Atom proto)
       +sendevent(Window w, Atom proto, int mask, long d0, long d1, long d2, long d3, long d4)
        {
                int n;
       -        Atom *protocols;
       +        Atom *protocols, mt;
                int exists = 0;
                XEvent ev;
        
       -        if (XGetWMProtocols(dpy, c->win, &protocols, &n)) {
       -                while (!exists && n--)
       -                        exists = protocols[n] == proto;
       -                XFree(protocols);
       +        if (proto == wmatom[WMTakeFocus] || proto == wmatom[WMDelete]) {
       +                mt = wmatom[WMProtocols];
       +                if (XGetWMProtocols(dpy, w, &protocols, &n)) {
       +                        while (!exists && n--)
       +                                exists = protocols[n] == proto;
       +                        XFree(protocols);
       +                }
                }
       +        else {
       +                exists = True;
       +                mt = proto;
       +    }
       +
                if (exists) {
                        ev.type = ClientMessage;
       -                ev.xclient.window = c->win;
       -                ev.xclient.message_type = wmatom[WMProtocols];
       +                ev.xclient.window = w;
       +                ev.xclient.message_type = mt;
                        ev.xclient.format = 32;
       -                ev.xclient.data.l[0] = proto;
       -                ev.xclient.data.l[1] = CurrentTime;
       -                XSendEvent(dpy, c->win, False, NoEventMask, &ev);
       +                ev.xclient.data.l[0] = d0;
       +                ev.xclient.data.l[1] = d1;
       +                ev.xclient.data.l[2] = d2;
       +                ev.xclient.data.l[3] = d3;
       +                ev.xclient.data.l[4] = d4;
       +                XSendEvent(dpy, w, False, mask, &ev);
                }
                return exists;
        }
       @@ -1513,7 +1696,7 @@ setfocus(Client *c)
                                XA_WINDOW, 32, PropModeReplace,
                                (unsigned char *) &(c->win), 1);
                }
       -        sendevent(c, wmatom[WMTakeFocus]);
       +        sendevent(c->win, wmatom[WMTakeFocus], NoEventMask, wmatom[WMTakeFocus], CurrentTime, 0, 0, 0);
        }
        
        void
       @@ -1608,15 +1791,22 @@ setup(void)
                wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
                wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
                netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
       -        netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
       -        netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
       +   netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
       +        netatom[NetSystemTray] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_S0", False);
       +        netatom[NetSystemTrayOP] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_OPCODE", False);
       +        netatom[NetSystemTrayOrientation] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_ORIENTATION", False);
       +        netatom[NetSystemTrayOrientationHorz] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_ORIENTATION_HORZ", False);
       +    netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
                netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
                netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
                netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
                netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
                netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
                netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
       -        /* init cursors */
       +        xatom[Manager] = XInternAtom(dpy, "MANAGER", False);
       +        xatom[Xembed] = XInternAtom(dpy, "_XEMBED", False);
       +        xatom[XembedInfo] = XInternAtom(dpy, "_XEMBED_INFO", False);
       +    /* init cursors */
                cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
                cursor[CurResize] = drw_cur_create(drw, XC_sizing);
                cursor[CurMove] = drw_cur_create(drw, XC_fleur);
       @@ -1624,6 +1814,8 @@ setup(void)
                scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
                for (i = 0; i < LENGTH(colors); i++)
                        scheme[i] = drw_scm_create(drw, colors[i], 3);
       +        /* init system tray */
       +        updatesystray();
                /* init bars */
                updatebars();
                updatestatus();
       @@ -1795,7 +1987,18 @@ togglebar(const Arg *arg)
        {
                selmon->showbar = selmon->pertag->showbars[selmon->pertag->curtag] = !selmon->showbar;
                updatebarpos(selmon);
       -        XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
       +        resizebarwin(selmon);
       +        if (showsystray) {
       +                XWindowChanges wc;
       +                if (!selmon->showbar)
       +                        wc.y = -bh;
       +                else if (selmon->showbar) {
       +                        wc.y = 0;
       +                        if (!selmon->topbar)
       +                                wc.y = selmon->mh - bh;
       +                }
       +                XConfigureWindow(dpy, systray->win, CWY, &wc);
       +        }
                arrange(selmon);
        }
        
       @@ -1937,11 +2140,18 @@ unmapnotify(XEvent *e)
                        else
                                unmanage(c, 0);
                }
       +        else if ((c = wintosystrayicon(ev->window))) {
       +                /* KLUDGE! sometimes icons occasionally unmap their windows, but do
       +                 * _not_ destroy them. We map those windows back */
       +                XMapRaised(dpy, c->win);
       +                updatesystray();
       +        }
        }
        
        void
        updatebars(void)
        {
       +        unsigned int w;
                Monitor *m;
                XSetWindowAttributes wa = {
                        .override_redirect = True,
       @@ -1952,10 +2162,15 @@ updatebars(void)
                for (m = mons; m; m = m->next) {
                        if (m->barwin)
                                continue;
       -                m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
       +                w = m->ww;
       +                if (showsystray && m == systraytomon(m))
       +                        w -= getsystraywidth();
       +                m->barwin = XCreateWindow(dpy, root, m->wx, m->by, w, bh, 0, DefaultDepth(dpy, screen),
                                        CopyFromParent, DefaultVisual(dpy, screen),
                                        CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
                        XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
       +                if (showsystray && m == systraytomon(m))
       +                        XMapRaised(dpy, systray->win);
                        XMapRaised(dpy, m->barwin);
                        XSetClassHint(dpy, m->barwin, &ch);
                }
       @@ -2132,6 +2347,125 @@ updatestatus(void)
                if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
                        strcpy(stext, "dwm-"VERSION);
                drawbar(selmon);
       +        updatesystray();
       +}
       +
       +
       +void
       +updatesystrayicongeom(Client *i, int w, int h)
       +{
       +        if (i) {
       +                i->h = bh;
       +                if (w == h)
       +                        i->w = bh;
       +                else if (h == bh)
       +                        i->w = w;
       +                else
       +                        i->w = (int) ((float)bh * ((float)w / (float)h));
       +                applysizehints(i, &(i->x), &(i->y), &(i->w), &(i->h), False);
       +                /* force icons into the systray dimensions if they don't want to */
       +                if (i->h > bh) {
       +                        if (i->w == i->h)
       +                                i->w = bh;
       +                        else
       +                                i->w = (int) ((float)bh * ((float)i->w / (float)i->h));
       +                        i->h = bh;
       +                }
       +        }
       +}
       +
       +void
       +updatesystrayiconstate(Client *i, XPropertyEvent *ev)
       +{
       +        long flags;
       +        int code = 0;
       +
       +        if (!showsystray || !i || ev->atom != xatom[XembedInfo] ||
       +                        !(flags = getatomprop(i, xatom[XembedInfo])))
       +                return;
       +
       +        if (flags & XEMBED_MAPPED && !i->tags) {
       +                i->tags = 1;
       +                code = XEMBED_WINDOW_ACTIVATE;
       +                XMapRaised(dpy, i->win);
       +                setclientstate(i, NormalState);
       +        }
       +        else if (!(flags & XEMBED_MAPPED) && i->tags) {
       +                i->tags = 0;
       +                code = XEMBED_WINDOW_DEACTIVATE;
       +                XUnmapWindow(dpy, i->win);
       +                setclientstate(i, WithdrawnState);
       +        }
       +        else
       +                return;
       +        sendevent(i->win, xatom[Xembed], StructureNotifyMask, CurrentTime, code, 0,
       +                        systray->win, XEMBED_EMBEDDED_VERSION);
       +}
       +
       +void
       +updatesystray(void)
       +{
       +        XSetWindowAttributes wa;
       +        XWindowChanges wc;
       +        Client *i;
       +        Monitor *m = systraytomon(NULL);
       +        unsigned int x = m->mx + m->mw;
       +        unsigned int sw = TEXTW(stext) - lrpad + systrayspacing;
       +        unsigned int w = 1;
       +
       +        if (!showsystray)
       +                return;
       +        if (systrayonleft)
       +                x -= sw + lrpad / 2;
       +        if (!systray) {
       +                /* init systray */
       +                if (!(systray = (Systray *)calloc(1, sizeof(Systray))))
       +                        die("fatal: could not malloc() %u bytes\n", sizeof(Systray));
       +                systray->win = XCreateSimpleWindow(dpy, root, x, m->by, w, bh, 0, 0, scheme[SchemeSel][ColBg].pixel);
       +                wa.event_mask        = ButtonPressMask | ExposureMask;
       +                wa.override_redirect = True;
       +                wa.background_pixel  = scheme[SchemeNorm][ColBg].pixel;
       +                XSelectInput(dpy, systray->win, SubstructureNotifyMask);
       +                XChangeProperty(dpy, systray->win, netatom[NetSystemTrayOrientation], XA_CARDINAL, 32,
       +                                PropModeReplace, (unsigned char *)&netatom[NetSystemTrayOrientationHorz], 1);
       +                XChangeWindowAttributes(dpy, systray->win, CWEventMask|CWOverrideRedirect|CWBackPixel, &wa);
       +                XMapRaised(dpy, systray->win);
       +                XSetSelectionOwner(dpy, netatom[NetSystemTray], systray->win, CurrentTime);
       +                if (XGetSelectionOwner(dpy, netatom[NetSystemTray]) == systray->win) {
       +                        sendevent(root, xatom[Manager], StructureNotifyMask, CurrentTime, netatom[NetSystemTray], systray->win, 0, 0);
       +                        XSync(dpy, False);
       +                }
       +                else {
       +                        fprintf(stderr, "dwm: unable to obtain system tray.\n");
       +                        free(systray);
       +                        systray = NULL;
       +                        return;
       +                }
       +        }
       +        for (w = 0, i = systray->icons; i; i = i->next) {
       +                /* make sure the background color stays the same */
       +                wa.background_pixel  = scheme[SchemeNorm][ColBg].pixel;
       +                XChangeWindowAttributes(dpy, i->win, CWBackPixel, &wa);
       +                XMapRaised(dpy, i->win);
       +                w += systrayspacing;
       +                i->x = w;
       +                XMoveResizeWindow(dpy, i->win, i->x, 0, i->w, i->h);
       +                w += i->w;
       +                if (i->mon != m)
       +                        i->mon = m;
       +        }
       +        w = w ? w + systrayspacing : 1;
       +        x -= w;
       +        XMoveResizeWindow(dpy, systray->win, x, m->by, w, bh);
       +        wc.x = x; wc.y = m->by; wc.width = w; wc.height = bh;
       +        wc.stack_mode = Above; wc.sibling = m->barwin;
       +        XConfigureWindow(dpy, systray->win, CWX|CWY|CWWidth|CWHeight|CWSibling|CWStackMode, &wc);
       +        XMapWindow(dpy, systray->win);
       +        XMapSubwindows(dpy, systray->win);
       +        /* redraw background */
       +        XSetForeground(dpy, drw->gc, scheme[SchemeNorm][ColBg].pixel);
       +        XFillRectangle(dpy, systray->win, drw->gc, 0, 0, w, bh);
       +        XSync(dpy, False);
        }
        
        void
       @@ -2225,6 +2559,16 @@ wintoclient(Window w)
                return NULL;
        }
        
       +Client *
       +wintosystrayicon(Window w) {
       +        Client *i = NULL;
       +
       +        if (!showsystray || !w)
       +                return i;
       +        for (i = systray->icons; i && i->win != w; i = i->next) ;
       +        return i;
       +}
       +
        Monitor *
        wintomon(Window w)
        {
       @@ -2278,6 +2622,22 @@ xerrorstart(Display *dpy, XErrorEvent *ee)
                return -1;
        }
        
       +Monitor *
       +systraytomon(Monitor *m) {
       +        Monitor *t;
       +        int i, n;
       +        if(!systraypinning) {
       +                if(!m)
       +                        return selmon;
       +                return m == selmon ? m : NULL;
       +        }
       +        for(n = 1, t = mons; t && t->next; n++, t = t->next) ;
       +        for(i = 1, t = mons; t && t->next && i < systraypinning; i++, t = t->next) ;
       +        if(systraypinningfailfirst && n < systraypinning)
       +                return mons;
       +        return t;
       +}
       +
        void
        zoom(const Arg *arg)
        {