patches/dwm/dwm-alpha-systray-6.2.diff

From 986ee6a3ae3dcdd704b69f1dbd954115246021bf Mon Sep 17 00:00:00 2001
From: bakkeby <bakkeby@gmail.com>
Date: Tue, 7 Apr 2020 10:47:07 +0200
Subject: [PATCH 1/2] Alpha, adds transparency for the status bar.

Allow dwm to have translucent bars, while keeping all the text on it opaque, just like the alpha-patch for st.

Refer to https://dwm.suckless.org/patches/alpha/

Authors:

Eon S. Jeon - esjeon@hyunmu.am
Laslo Hunhold - dev@frign.de (6.1 port)
Thomas Oltmann - thomas.oltmann.hhg@gmail.com (20180613-b69c870 port)
---
 config.def.h |  7 ++++++
 config.mk    |  2 +-
 drw.c        | 26 ++++++++++++-----------
 drw.h        |  9 +++++---
 dwm.c        | 60 ++++++++++++++++++++++++++++++++++++++++++++++------
 5 files changed, 82 insertions(+), 22 deletions(-)

diff --git a/config.def.h b/config.def.h
index 1c0b587..4f68fe8 100644
--- a/config.def.h
+++ b/config.def.h
@@ -12,11 +12,18 @@ static const char col_gray2[]       = "#444444";
 static const char col_gray3[]       = "#bbbbbb";
 static const char col_gray4[]       = "#eeeeee";
 static const char col_cyan[]        = "#005577";
+static const unsigned int baralpha = 0xd0;
+static const unsigned int borderalpha = OPAQUE;
 static const char *colors[][3]      = {
 	/*               fg         bg         border   */
 	[SchemeNorm] = { col_gray3, col_gray1, col_gray2 },
 	[SchemeSel]  = { col_gray4, col_cyan,  col_cyan  },
 };
+static const unsigned int alphas[][3]      = {
+	/*               fg      bg        border     */
+	[SchemeNorm] = { OPAQUE, baralpha, borderalpha },
+	[SchemeSel]  = { OPAQUE, baralpha, borderalpha },
+};
 
 /* tagging */
 static const char *tags[] = { "1", "2", "3", "4", "5", "6", "7", "8", "9" };
diff --git a/config.mk b/config.mk
index 6d36cb7..3cb1518 100644
--- a/config.mk
+++ b/config.mk
@@ -22,7 +22,7 @@ FREETYPEINC = /usr/include/freetype2
 
 # includes and libs
 INCS = -I${X11INC} -I${FREETYPEINC}
-LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS}
+LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS} -lXrender
 
 # flags
 CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_POSIX_C_SOURCE=2 -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
diff --git a/drw.c b/drw.c
index 8fd1ca4..c202cb3 100644
--- a/drw.c
+++ b/drw.c
@@ -61,7 +61,7 @@ utf8decode(const char *c, long *u, size_t clen)
 }
 
 Drw *
-drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h)
+drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h, Visual *visual, unsigned int depth, Colormap cmap)
 {
 	Drw *drw = ecalloc(1, sizeof(Drw));
 
@@ -70,8 +70,11 @@ drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h
 	drw->root = root;
 	drw->w = w;
 	drw->h = h;
-	drw->drawable = XCreatePixmap(dpy, root, w, h, DefaultDepth(dpy, screen));
-	drw->gc = XCreateGC(dpy, root, 0, NULL);
+	drw->visual = visual;
+	drw->depth = depth;
+	drw->cmap = cmap;
+	drw->drawable = XCreatePixmap(dpy, root, w, h, depth);
+	drw->gc = XCreateGC(dpy, drw->drawable, 0, NULL);
 	XSetLineAttributes(dpy, drw->gc, 1, LineSolid, CapButt, JoinMiter);
 
 	return drw;
@@ -87,7 +90,7 @@ drw_resize(Drw *drw, unsigned int w, unsigned int h)
 	drw->h = h;
 	if (drw->drawable)
 		XFreePixmap(drw->dpy, drw->drawable);
-	drw->drawable = XCreatePixmap(drw->dpy, drw->root, w, h, DefaultDepth(drw->dpy, drw->screen));
+	drw->drawable = XCreatePixmap(drw->dpy, drw->root, w, h, drw->depth);
 }
 
 void
@@ -193,21 +196,22 @@ drw_fontset_free(Fnt *font)
 }
 
 void
-drw_clr_create(Drw *drw, Clr *dest, const char *clrname)
+drw_clr_create(Drw *drw, Clr *dest, const char *clrname, unsigned int alpha)
 {
 	if (!drw || !dest || !clrname)
 		return;
 
-	if (!XftColorAllocName(drw->dpy, DefaultVisual(drw->dpy, drw->screen),
-	                       DefaultColormap(drw->dpy, drw->screen),
+	if (!XftColorAllocName(drw->dpy, drw->visual, drw->cmap,
 	                       clrname, dest))
 		die("error, cannot allocate color '%s'", clrname);
+
+	dest->pixel = (dest->pixel & 0x00ffffffU) | (alpha << 24);
 }
 
 /* Wrapper to create color schemes. The caller has to call free(3) on the
  * returned color scheme when done using it. */
 Clr *
-drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount)
+drw_scm_create(Drw *drw, const char *clrnames[], const unsigned int alphas[], size_t clrcount)
 {
 	size_t i;
 	Clr *ret;
@@ -217,7 +221,7 @@ drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount)
 		return NULL;
 
 	for (i = 0; i < clrcount; i++)
-		drw_clr_create(drw, &ret[i], clrnames[i]);
+		drw_clr_create(drw, &ret[i], clrnames[i], alphas[i]);
 	return ret;
 }
 
@@ -273,9 +277,7 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, unsigned int lp
 	} else {
 		XSetForeground(drw->dpy, drw->gc, drw->scheme[invert ? ColFg : ColBg].pixel);
 		XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
-		d = XftDrawCreate(drw->dpy, drw->drawable,
-		                  DefaultVisual(drw->dpy, drw->screen),
-		                  DefaultColormap(drw->dpy, drw->screen));
+		d = XftDrawCreate(drw->dpy, drw->drawable, drw->visual, drw->cmap);
 		x += lpad;
 		w -= lpad;
 	}
diff --git a/drw.h b/drw.h
index 4bcd5ad..a56f523 100644
--- a/drw.h
+++ b/drw.h
@@ -20,6 +20,9 @@ typedef struct {
 	Display *dpy;
 	int screen;
 	Window root;
+	Visual *visual;
+	unsigned int depth;
+	Colormap cmap;
 	Drawable drawable;
 	GC gc;
 	Clr *scheme;
@@ -27,7 +30,7 @@ typedef struct {
 } Drw;
 
 /* Drawable abstraction */
-Drw *drw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h);
+Drw *drw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h, Visual *visual, unsigned int depth, Colormap cmap);
 void drw_resize(Drw *drw, unsigned int w, unsigned int h);
 void drw_free(Drw *drw);
 
@@ -38,8 +41,8 @@ unsigned int drw_fontset_getwidth(Drw *drw, const char *text);
 void drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w, unsigned int *h);
 
 /* Colorscheme abstraction */
-void drw_clr_create(Drw *drw, Clr *dest, const char *clrname);
-Clr *drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount);
+void drw_clr_create(Drw *drw, Clr *dest, const char *clrname, unsigned int alpha);
+Clr *drw_scm_create(Drw *drw, const char *clrnames[], const unsigned int alphas[], size_t clrcount);
 
 /* Cursor abstraction */
 Cur *drw_cur_create(Drw *drw, int shape);
diff --git a/dwm.c b/dwm.c
index 4465af1..20f8309 100644
--- a/dwm.c
+++ b/dwm.c
@@ -57,6 +57,8 @@
 #define TAGMASK                 ((1 << LENGTH(tags)) - 1)
 #define TEXTW(X)                (drw_fontset_getwidth(drw, (X)) + lrpad)
 
+#define OPAQUE                  0xffU
+
 /* enums */
 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
 enum { SchemeNorm, SchemeSel }; /* color schemes */
@@ -232,6 +234,7 @@ static Monitor *wintomon(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 xinitvisual();
 static void zoom(const Arg *arg);
 
 /* variables */
@@ -268,6 +271,11 @@ static Drw *drw;
 static Monitor *mons, *selmon;
 static Window root, wmcheckwin;
 
+static int useargb = 0;
+static Visual *visual;
+static int depth;
+static Colormap cmap;
+
 /* configuration, allows nested code to access above variables */
 #include "config.h"
 
@@ -1541,7 +1549,8 @@ setup(void)
 	sw = DisplayWidth(dpy, screen);
 	sh = DisplayHeight(dpy, screen);
 	root = RootWindow(dpy, screen);
-	drw = drw_create(dpy, screen, root, sw, sh);
+	xinitvisual();
+	drw = drw_create(dpy, screen, root, sw, sh, visual, depth, cmap);
 	if (!drw_fontset_create(drw, fonts, LENGTH(fonts)))
 		die("no fonts could be loaded.");
 	lrpad = drw->fonts->h;
@@ -1569,7 +1578,7 @@ setup(void)
 	/* init appearance */
 	scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
 	for (i = 0; i < LENGTH(colors); i++)
-		scheme[i] = drw_scm_create(drw, colors[i], 3);
+		scheme[i] = drw_scm_create(drw, colors[i], alphas[i], 3);
 	/* init bars */
 	updatebars();
 	updatestatus();
@@ -1804,16 +1813,18 @@ updatebars(void)
 	Monitor *m;
 	XSetWindowAttributes wa = {
 		.override_redirect = True,
-		.background_pixmap = ParentRelative,
+		.background_pixel = 0,
+		.border_pixel = 0,
+		.colormap = cmap,
 		.event_mask = ButtonPressMask|ExposureMask
 	};
 	XClassHint ch = {"dwm", "dwm"};
 	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),
-				CopyFromParent, DefaultVisual(dpy, screen),
-				CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
+		m->barwin = XCreateWindow(dpy, root, m->wx, m->by, m->ww, bh, 0, depth,
+		                          InputOutput, visual,
+		                          CWOverrideRedirect|CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &wa);
 		XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
 		XMapRaised(dpy, m->barwin);
 		XSetClassHint(dpy, m->barwin, &ch);
@@ -2110,6 +2121,43 @@ xerrorstart(Display *dpy, XErrorEvent *ee)
 	return -1;
 }
 
+void
+xinitvisual()
+{
+	XVisualInfo *infos;
+	XRenderPictFormat *fmt;
+	int nitems;
+	int i;
+
+	XVisualInfo tpl = {
+		.screen = screen,
+		.depth = 32,
+		.class = TrueColor
+	};
+	long masks = VisualScreenMask | VisualDepthMask | VisualClassMask;
+
+	infos = XGetVisualInfo(dpy, masks, &tpl, &nitems);
+	visual = NULL;
+	for(i = 0; i < nitems; i ++) {
+		fmt = XRenderFindVisualFormat(dpy, infos[i].visual);
+		if (fmt->type == PictTypeDirect && fmt->direct.alphaMask) {
+			visual = infos[i].visual;
+			depth = infos[i].depth;
+			cmap = XCreateColormap(dpy, root, visual, AllocNone);
+			useargb = 1;
+			break;
+		}
+	}
+
+	XFree(infos);
+
+	if (! visual) {
+		visual = DefaultVisual(dpy, screen);
+		depth = DefaultDepth(dpy, screen);
+		cmap = DefaultColormap(dpy, screen);
+	}
+}
+
 void
 zoom(const Arg *arg)
 {
-- 
2.19.1


From 514943eba37cd2f9d62d47157dc3088e31711529 Mon Sep 17 00:00:00 2001
From: bakkeby <bakkeby@gmail.com>
Date: Tue, 7 Apr 2020 10:53:35 +0200
Subject: [PATCH 2/2] Adding systray patch

Refer to https://dwm.suckless.org/patches/systray/
---
 config.def.h |   4 +
 dwm.c        | 423 +++++++++++++++++++++++++++++++++++++++++++++++----
 2 files changed, 401 insertions(+), 26 deletions(-)

diff --git a/config.def.h b/config.def.h
index 4f68fe8..1952613 100644
--- a/config.def.h
+++ b/config.def.h
@@ -5,6 +5,10 @@ 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 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 char *fonts[]          = { "monospace:size=10" };
 static const char dmenufont[]       = "monospace:size=10";
 static const char col_gray1[]       = "#222222";
diff --git a/dwm.c b/dwm.c
index 20f8309..c3ecbef 100644
--- a/dwm.c
+++ b/dwm.c
@@ -59,12 +59,30 @@
 
 #define OPAQUE                  0xffU
 
+#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 { Manager, Xembed, XembedInfo, XLast }; /* Xembed atoms */
 enum { CurNormal, CurResize, CurMove, CurLast }; /* cursor */
 enum { SchemeNorm, SchemeSel }; /* color schemes */
-enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
-       NetWMFullscreen, NetActiveWindow, NetWMWindowType,
-       NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
+enum { NetSupported, NetSystemTray, NetSystemTrayOP, NetSystemTrayOrientation, NetSystemTrayVisual,
+	   NetWMName, NetWMState, NetWMFullscreen, NetActiveWindow, NetWMWindowType, NetWMWindowTypeDock,
+	   NetSystemTrayOrientationHorz, NetWMWindowTypeDialog, NetClientList, NetWMCheck, NetLast }; /* EWMH atoms */
 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
 enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
        ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
@@ -143,6 +161,12 @@ 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);
@@ -171,9 +195,11 @@ 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 int getrootptr(int *x, int *y);
 static long getstate(Window w);
 static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
+static unsigned int getsystraywidth();
 static void grabbuttons(Client *c, int focused);
 static void grabkeys(void);
 static void incnmaster(const Arg *arg);
@@ -193,10 +219,12 @@ static Monitor *recttomon(int x, int y, int w, int h);
 static void resize(Client *c, int x, int y, int w, int h, int interact);
 static void resizeclient(Client *c, int x, int y, int w, int h);
 static void resizemouse(const Arg *arg);
+static void removesystrayicon(Client *i);
+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 +236,7 @@ static void seturgent(Client *c, int urg);
 static void showhide(Client *c);
 static void sigchld(int unused);
 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 *);
@@ -225,12 +254,16 @@ 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);
@@ -260,9 +293,10 @@ 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;
@@ -271,6 +305,9 @@ static Drw *drw;
 static Monitor *mons, *selmon;
 static Window root, wmcheckwin;
 
+static Systray *systray = NULL;
+static unsigned long systrayorientation = _NET_SYSTEM_TRAY_ORIENTATION_HORZ;
+
 static int useargb = 0;
 static Visual *visual;
 static int depth;
@@ -447,7 +484,7 @@ buttonpress(XEvent *e)
 			arg.ui = 1 << i;
 		} else if (ev->x < x + blw)
 			click = ClkLtSymbol;
-		else if (ev->x > selmon->ww - TEXTW(stext))
+		else if (ev->x > selmon->ww - TEXTW(stext) - getsystraywidth())
 			click = ClkStatusText;
 		else
 			click = ClkWinTitle;
@@ -490,6 +527,11 @@ cleanup(void)
 	XUngrabKey(dpy, AnyKey, AnyModifier, root);
 	while (mons)
 		cleanupmon(mons);
+	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++)
@@ -520,9 +562,54 @@ 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;
+			}
+
+			/* Clear status bar to avoid artifacts beneath systray icons */
+			drw_rect(drw, 0, 0, selmon->ww, bh, 1, 1);
+			drw_map(drw, selmon->barwin, 0, 0, selmon->ww, bh);
+
+			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 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);
+			XSync(dpy, False);
+			setclientstate(c, NormalState);
+			drawbar(selmon);
+			updatesystray();
+		}
+		return;
+	}
+
 	if (!c)
 		return;
 	if (cme->message_type == netatom[NetWMState]) {
@@ -660,6 +747,10 @@ destroynotify(XEvent *e)
 
 	if ((c = wintoclient(ev->window)))
 		unmanage(c, 1);
+	else if (showsystray && (c = wintosystrayicon(ev->window))) {
+		removesystrayicon(c);
+		updatesystray();
+	}
 }
 
 void
@@ -703,17 +794,20 @@ dirtomon(int dir)
 void
 drawbar(Monitor *m)
 {
-	int x, w, sw = 0;
+	int x, w, sw = 0, stw = 0;
 	int boxs = drw->fonts->h / 9;
 	int boxw = drw->fonts->h / 6 + 2;
 	unsigned int i, occ = 0, urg = 0;
 	Client *c;
 
+	if (showsystray && m == systraytomon(m))
+		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]);
 		sw = TEXTW(stext) - lrpad + 2; /* 2px right padding */
-		drw_text(drw, m->ww - sw, 0, sw, bh, 0, stext, 0);
+		drw_text(drw, m->ww - sw - stw, 0, sw, bh, 0, stext, 0);
 	}
 
 	for (c = m->clients; c; c = c->next) {
@@ -736,7 +830,7 @@ 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 - sw - x) > bh) {
+	if ((w = m->ww - sw - 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);
@@ -747,7 +841,7 @@ 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
@@ -755,8 +849,18 @@ drawbars(void)
 {
 	Monitor *m;
 
+	if (showsystray) {
+		/* Clear status bar to avoid artifacts beneath systray icons */
+		drw_setscheme(drw, scheme[SchemeNorm]);
+		drw_rect(drw, 0, 0, selmon->ww, bh, 1, 1);
+		drw_map(drw, selmon->barwin, 0, 0, selmon->ww, bh);
+	}
+
 	for (m = mons; m; m = m->next)
 		drawbar(m);
+
+	if (showsystray)
+		updatesystray();
 }
 
 void
@@ -784,8 +888,11 @@ 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 (showsystray && m == selmon)
+			updatesystray();
+	}
 }
 
 void
@@ -871,9 +978,17 @@ 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;
@@ -907,6 +1022,16 @@ 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 : 0;
+}
+
 int
 gettextprop(Window w, Atom atom, char *text, unsigned int size)
 {
@@ -1011,7 +1136,7 @@ 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);
@@ -1100,6 +1225,12 @@ maprequest(XEvent *e)
 	static XWindowAttributes wa;
 	XMapRequestEvent *ev = &e->xmaprequest;
 
+	Client *i;
+	if (showsystray && (i = wintosystrayicon(ev->window))) {
+		sendevent(i->win, netatom[Xembed], StructureNotifyMask, CurrentTime, XEMBED_WINDOW_ACTIVATE, 0, systray->win, XEMBED_EMBEDDED_VERSION);
+		updatesystray();
+	}
+
 	if (!XGetWindowAttributes(dpy, ev->window, &wa))
 		return;
 	if (wa.override_redirect)
@@ -1223,6 +1354,16 @@ propertynotify(XEvent *e)
 	Window trans;
 	XPropertyEvent *ev = &e->xproperty;
 
+	if (showsystray && (c = wintosystrayicon(ev->window))) {
+		if (ev->atom == XA_WM_NORMAL_HINTS) {
+			updatesizehints(c);
+			updatesystrayicongeom(c, c->w, c->h);
+		}
+		else
+			updatesystrayiconstate(c, ev);
+		updatesystray();
+	}
+
 	if ((ev->window == root) && (ev->atom == XA_WM_NAME))
 		updatestatus();
 	else if (ev->state == PropertyDelete)
@@ -1273,6 +1414,19 @@ recttomon(int x, int y, int w, int h)
 	return r;
 }
 
+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)
 {
@@ -1352,6 +1506,18 @@ 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);
+		updatesystray();
+	}
+}
+
 void
 restack(Monitor *m)
 {
@@ -1441,26 +1607,35 @@ 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;
 }
@@ -1474,7 +1649,7 @@ 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
@@ -1564,13 +1739,22 @@ 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[NetSystemTrayOrientationHorz] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_ORIENTATION_HORZ", False);
+	netatom[NetSystemTrayVisual] = XInternAtom(dpy, "_NET_SYSTEM_TRAY_VISUAL", 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[NetWMWindowTypeDock] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DOCK", False);
 	netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", False);
 	netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
+	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);
@@ -1579,6 +1763,9 @@ setup(void)
 	scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
 	for (i = 0; i < LENGTH(colors); i++)
 		scheme[i] = drw_scm_create(drw, colors[i], alphas[i], 3);
+	/* init system tray */
+	if (showsystray)
+		updatesystray();
 	/* init bars */
 	updatebars();
 	updatestatus();
@@ -1661,6 +1848,22 @@ spawn(const Arg *arg)
 	}
 }
 
+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
 tag(const Arg *arg)
 {
@@ -1711,6 +1914,17 @@ togglebar(const Arg *arg)
 	selmon->showbar = !selmon->showbar;
 	updatebarpos(selmon);
 	XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
+	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);
 }
 
@@ -1804,12 +2018,19 @@ unmapnotify(XEvent *e)
 			setclientstate(c, WithdrawnState);
 		else
 			unmanage(c, 0);
+	} else if (showsystray && (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);
+		removesystrayicon(c);
+		updatesystray();
 	}
 }
 
 void
 updatebars(void)
 {
+	unsigned int w;
 	Monitor *m;
 	XSetWindowAttributes wa = {
 		.override_redirect = True,
@@ -1822,10 +2043,15 @@ 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, depth,
+		w = m->ww;
+		if (showsystray && m == systraytomon(m))
+			w -= getsystraywidth();
+		m->barwin = XCreateWindow(dpy, root, m->wx, m->by, w, bh, 0, depth,
 		                          InputOutput, visual,
 		                          CWOverrideRedirect|CWBackPixel|CWBorderPixel|CWColormap|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);
 	}
@@ -2001,6 +2227,141 @@ updatestatus(void)
 	if (!gettextprop(root, XA_WM_NAME, stext, sizeof(stext)))
 		strcpy(stext, "dwm-"VERSION);
 	drawbar(selmon);
+	if (showsystray)
+		updatesystray();
+}
+
+void
+updatesystray(void)
+{
+	XSetWindowAttributes wa;
+	XWindowChanges wc;
+	Client *i;
+	Monitor *m = systraytomon(NULL);
+	unsigned int x = m->mx + m->mw;
+	unsigned int w = 1, xpad = 0, ypad = 0;
+	#if BARPADDING_PATCH
+	xpad = sp;
+	ypad = vp;
+	#endif // BARPADDING_PATCH
+
+	if (!showsystray)
+		return;
+	if (!systray) {
+		/* init systray */
+		if (!(systray = (Systray *)calloc(1, sizeof(Systray))))
+			die("fatal: could not malloc() %u bytes\n", sizeof(Systray));
+
+		wa.override_redirect = True;
+		wa.event_mask = ButtonPressMask|ExposureMask;
+		wa.background_pixel = scheme[SchemeNorm][ColBg].pixel;
+		wa.border_pixel = 0;
+		wa.colormap = cmap;
+		systray->win = XCreateWindow(dpy, root, x - xpad, m->by + ypad, w, bh, 0, depth,
+						InputOutput, visual,
+						CWOverrideRedirect|CWBackPixel|CWBorderPixel|CWColormap|CWEventMask, &wa);
+		XSelectInput(dpy, systray->win, SubstructureNotifyMask);
+		XChangeProperty(dpy, systray->win, netatom[NetSystemTrayOrientation], XA_CARDINAL, 32,
+				PropModeReplace, (unsigned char *)&systrayorientation, 1);
+		XChangeProperty(dpy, systray->win, netatom[NetSystemTrayVisual], XA_VISUALID, 32,
+				PropModeReplace, (unsigned char *)&visual->visualid, 1);
+		XChangeProperty(dpy, systray->win, netatom[NetWMWindowType], XA_ATOM, 32,
+				PropModeReplace, (unsigned char *)&netatom[NetWMWindowTypeDock], 1);
+		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;
+		}
+	}
+
+	drw_setscheme(drw, scheme[SchemeNorm]);
+	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 - xpad, m->by + ypad, w, bh);
+	wc.x = x - xpad;
+	wc.y = m->by + ypad;
+	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
+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;
+		}
+		if (i->w > 2*bh)
+			i->w = 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
@@ -2085,6 +2446,16 @@ 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. */
-- 
2.19.1