t* dwm + patches
       
   URI git clone git://git.codevoid.de/dwm-sdk
   DIR Log
   DIR Files
   DIR Refs
   DIR README
   DIR LICENSE
       ---
   DIR commit 2fc02334c971485d52e007a3c0a5de834e7c98c0
   DIR parent 7ba08f0d3026fda7f3879542a15420f63e851728
   URI Author: Stefan Hagen <sh+git[at]codevoid[dot]de>
       Date:   Fri, 16 Nov 2018 09:45:11 +0100
       
       Add systray patch
       
       Diffstat:
         M config.def.h                        |       2 ++
         M config.h                            |       2 ++
         M dwm.c                               |     349 +++++++++++++++++++++++++++++--
       
       3 files changed, 332 insertions(+), 21 deletions(-)
       ---
   DIR diff --git a/config.def.h b/config.def.h
       t@@ -13,6 +13,8 @@ static const char floatselbordercolor[]  = "#005577";
        static const unsigned int borderpx  = 1;        /* border pixel of windows */
        static const unsigned int gappx     = 18;       /* gap pixel between windows */
        static const unsigned int snap      = 32;       /* snap pixel */
       +static const unsigned int systrayspacing = 2;   /* systray spacing */
       +static const Bool showsystray       = True;     /* False means no systray */
        static const Bool showbar           = True;     /* False means no bar */
        static const Bool topbar            = True;     /* False means bottom bar */
        static const Bool extrabar          = True;     /* False means no extra bar */
   DIR diff --git a/config.h b/config.h
       t@@ -13,6 +13,8 @@ static const char floatselbordercolor[]  = "#FF0000"; // floating window border 
        static const unsigned int borderpx       = 1;         // border pixel of windows
        static const unsigned int gappx          = 8;         // gap pixel between windows
        static const unsigned int snap           = 8;         // snap pixel
       +static const unsigned int systrayspacing = 2;         // systray spacing
       +static const Bool showsystray            = True;      // False means no systray
        static const Bool showbar                = True;      // False means no bar
        static const Bool topbar                 = True;      // False means bottom bar
        static const Bool extrabar               = True;      // False means no extra bar
   DIR diff --git a/dwm.c b/dwm.c
       t@@ -55,12 +55,30 @@
        #define TAGMASK                 ((1 << LENGTH(tags)) - 1)
        #define TEXTW(X)                (textnw(X, strlen(X)) + dc.font.height)
        
       +#define SYSTEM_TRAY_REQUEST_DOCK    0
       +#define _NET_SYSTEM_TRAY_ORIENTATION_HORZ 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 { ColBorder, ColFG, ColBG, ColBorderFloat, ColLast };              /* color */
       -enum { NetSupported, NetWMName, NetWMState,
       -       NetWMFullscreen, NetActiveWindow, NetWMWindowType,
       -       NetWMWindowTypeDialog, NetLast };     /* EWMH atoms */
       +enum { NetSupported, NetSystemTray, NetSystemTrayOP, NetSystemTrayOrientation,
       +           NetWMName, NetWMState, NetWMFullscreen, NetActiveWindow, NetWMWindowType,
       +           NetWMWindowTypeDialog, 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 */
       t@@ -163,6 +181,12 @@ typedef struct {
                char text[256];
        } Bar;
        
       +typedef struct Systray   Systray;
       +struct Systray {
       +        Window win;
       +        Client *icons;
       +};
       +
        /* function declarations */
        static void applyrules(Client *c);
        static Bool applysizehints(Client *c, int *x, int *y, int *w, int *h, Bool interact);
       t@@ -195,9 +219,11 @@ static void focus(Client *c);
        static void focusin(XEvent *e);
        static void focusmon(const Arg *arg);
        static void focusstack(const Arg *arg);
       +static Atom getatomprop(Client *c, Atom prop);
        static unsigned long getcolor(const char *colstr);
        static Bool getrootptr(int *x, int *y);
        static long getstate(Window w);
       +static unsigned int getsystraywidth();
        static Bool gettextprop(Window w, Atom atom, char *text, unsigned int size);
        static void grabbuttons(Client *c, Bool focused);
        static void grabkeys(void);
       t@@ -216,13 +242,16 @@ static void pop(Client *);
        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, Bool 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 Bool sendevent(Client *c, Atom proto);
       +static Bool 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);
       t@@ -253,6 +282,9 @@ static void updatebars(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 updatewindowtype(Client *c);
        static void updatetitle(Client *c);
        static void updatewmhints(Client *c);
       t@@ -261,12 +293,15 @@ static void viewtoleft(const Arg *arg);
        static void viewtoright(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 unsigned long systrayorientation = _NET_SYSTEM_TRAY_ORIENTATION_HORZ;
        static Client *prevzoom = NULL;
        static const char broken[] = "broken";
        static char stext[256];
       t@@ -289,9 +324,10 @@ 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 Bool running = True;
        static Cursor cursor[CurLast];
        static Display *dpy;
       t@@ -524,6 +560,11 @@ cleanup(void) {
                XDestroyWindow(dpy, eb.win);
                while(mons)
                        cleanupmon(mons);
       +        if(showsystray) {
       +                XUnmapWindow(dpy, systray->win);
       +                XDestroyWindow(dpy, systray->win);
       +                free(systray);
       +        }
                XSync(dpy, False);
                XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
        }
       t@@ -557,9 +598,49 @@ clearurgent(Client *c) {
        
        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));
       +                        c->win = cme->data.l[2];
       +                        c->mon = selmon;
       +                        c->next = systray->icons;
       +                        systray->icons = c;
       +                        XGetWindowAttributes(dpy, c->win, &wa);
       +                        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 pixmap */
       +                        swa.background_pixmap = ParentRelative;
       +                        swa.background_pixel  = dc.norm[ColBG];
       +                        XChangeWindowAttributes(dpy, c->win, CWBackPixmap|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);
       +                        resizebarwin(selmon);
       +                        updatesystray();
       +                        setclientstate(c, NormalState);
       +                }
       +                return;
       +        }
                if(!c)
                        return;
                if(cme->message_type == netatom[NetWMState]) {
       t@@ -612,6 +693,7 @@ configurenotify(XEvent *e) {
                                for(m = mons; m; m = m->next)
                                        XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
                                XMoveResizeWindow(dpy, eb.win, mons->wx, eb.y, mons->ww, bh);
       +                        resizebarwin(m);
                                focus(NULL);
                                arrange(NULL);
                        }
       t@@ -714,6 +796,11 @@ destroynotify(XEvent *e) {
        
                if((c = wintoclient(ev->window)))
                        unmanage(c, True);
       +        else if((c = wintosystrayicon(ev->window))) {
       +                removesystrayicon(c);
       +                resizebarwin(selmon);
       +                updatesystray();
       +        }
        }
        
        void
       t@@ -769,6 +856,7 @@ drawbar(Monitor *m) {
                unsigned long *col;
                Client *c;
        
       +        resizebarwin(m);
                for(c = m->clients; c; c = c->next) {
                        occ |= c->tags;
                        if(c->isurgent)
       t@@ -790,6 +878,9 @@ drawbar(Monitor *m) {
                if(m == selmon) { /* status is only drawn on selected monitor */
                        dc.w = TEXTW(stext);
                        dc.x = m->ww - dc.w;
       +                if(showsystray && m == selmon) {
       +                        dc.x -= getsystraywidth();
       +                }
                        if(dc.x < x) {
                                dc.x = x;
                                dc.w = m->ww - x;
       t@@ -822,6 +913,7 @@ drawbars(void) {
        
                for(m = mons; m; m = m->next)
                        drawbar(m);
       +        updatesystray();
        }
        
        void
       t@@ -971,10 +1063,17 @@ getatomprop(Client *c, Atom prop) {
                unsigned long dl;
                unsigned char *p = NULL;
                Atom da, atom = None;
       +        /* 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, XA_ATOM,
       +        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;
       t@@ -1016,6 +1115,15 @@ 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;
       +}
       +
        Bool
        gettextprop(Window w, Atom atom, char *text, unsigned int size) {
                char **list = NULL;
       t@@ -1150,7 +1258,7 @@ void
        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);
       t@@ -1238,6 +1346,12 @@ void
        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))
                        return;
       t@@ -1351,6 +1465,16 @@ propertynotify(XEvent *e) {
                Window trans;
                XPropertyEvent *ev = &e->xproperty;
        
       +        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)
       t@@ -1400,12 +1524,33 @@ 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, Bool interact) {
                if(applysizehints(c, &x, &y, &w, &h, interact))
                        resizeclient(c, x, y, w, h);
        }
        
        void
       +resizebarwin(Monitor *m) {
       +        unsigned int w = m->ww;
       +        if(showsystray && m == selmon)
       +                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;
        
       t@@ -1470,6 +1615,18 @@ 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;
                XEvent ev;
       t@@ -1553,25 +1710,35 @@ setclientstate(Client *c, long state) {
        }
        
        Bool
       -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;
                Bool exists = False;
                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;
        }
       t@@ -1580,7 +1747,7 @@ void
        setfocus(Client *c) {
                if(!c->neverfocus)
                        XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
       -        sendevent(c, wmatom[WMTakeFocus]);
       +        sendevent(c->win, wmatom[WMTakeFocus], NoEventMask, wmatom[WMTakeFocus], CurrentTime, 0, 0, 0);
        }
        
        void
       t@@ -1664,11 +1831,17 @@ setup(void) {
                wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
                netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", 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[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
                netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", 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);
       +        xatom[Manager] = XInternAtom(dpy, "MANAGER", False);
       +        xatom[Xembed] = XInternAtom(dpy, "_XEMBED", False);
       +        xatom[XembedInfo] = XInternAtom(dpy, "_XEMBED_INFO", False);
                /* init cursors */
                cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
                cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
       t@@ -1687,6 +1860,8 @@ setup(void) {
                XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
                if(!dc.font.set)
                        XSetFont(dpy, dc.gc, dc.font.xfont->fid);
       +        /* init system tray */
       +        updatesystray();
                /* init bars */
                updatebars();
                updatestatus();
       t@@ -1820,7 +1995,18 @@ void
        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);
        }
        
       t@@ -1942,18 +2128,28 @@ unmapnotify(XEvent *e) {
                        else
                                unmanage(c, False);
                }
       +        else if((c = wintosystrayicon(ev->window))) {
       +                removesystrayicon(c);
       +                resizebarwin(selmon);
       +                updatesystray();
       +        }
        }
        
        void
        updatebars(void) {
       +        unsigned int w;
                Monitor *m;
       +
                XSetWindowAttributes wa = {
                        .override_redirect = True,
                        .background_pixmap = ParentRelative,
                        .event_mask = ButtonPressMask|ExposureMask
                };
                for(m = mons; m; m = m->next) {
       -                m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, DefaultDepth(dpy, screen),
       +                w = m->ww;
       +                if(showsystray && m == selmon)
       +                        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]);
       t@@ -2164,6 +2360,107 @@ updatestatus(void) {
        }
        
        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 dimenons 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;
       +        Client *i;
       +        unsigned int x = selmon->mx + selmon->mw;
       +        unsigned int w = 1;
       +
       +        if(!showsystray)
       +                return;
       +        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, selmon->by, w, bh, 0, 0, dc.sel[ColBG]);
       +                wa.event_mask        = ButtonPressMask | ExposureMask;
       +                wa.override_redirect = True;
       +                wa.background_pixmap = ParentRelative;
       +                wa.background_pixel  = dc.norm[ColBG];
       +                XSelectInput(dpy, systray->win, SubstructureNotifyMask);
       +                XChangeProperty(dpy, systray->win, netatom[NetSystemTrayOrientation], XA_CARDINAL, 32,
       +                                PropModeReplace, (unsigned char *)&systrayorientation, 1);
       +                XChangeWindowAttributes(dpy, systray->win, CWEventMask|CWOverrideRedirect|CWBackPixel|CWBackPixmap, &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) {
       +                XMapRaised(dpy, i->win);
       +                w += systrayspacing;
       +                XMoveResizeWindow(dpy, i->win, (i->x = w), 0, i->w, i->h);
       +                w += i->w;
       +                if(i->mon != selmon)
       +                        i->mon = selmon;
       +        }
       +        w = w ? w + systrayspacing : 1;
       +         x -= w;
       +        XMoveResizeWindow(dpy, systray->win, x, selmon->by, w, bh);
       +        /* redraw background */
       +        XSetForeground(dpy, dc.gc, dc.norm[ColBG]);
       +        XFillRectangle(dpy, systray->win, dc.gc, 0, 0, w, bh);
       +        XSync(dpy, False);
       +}
       +
       +void
        updatewindowtype(Client *c) {
                Atom state = getatomprop(c, netatom[NetWMState]);
                Atom wtype = getatomprop(c, netatom[NetWMWindowType]);
       t@@ -2277,6 +2574,16 @@ wintomon(Window w) {
                return selmon;
        }
        
       +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;
       +}
       +
        /* There's no way to check accesses to destroyed windows, thus those cases are
         * ignored (especially on UnmapNotify's).  Other types of errors call Xlibs
         * default error handler, which may call exit.  */