add ewmhtags patch

chadwm/dwm.c

@@ -59,6 +59,7 @@
 #define WIDTH(X) ((X)->w + 2 * (X)->bw)
 #define HEIGHT(X) ((X)->h + 2 * (X)->bw)
 #define TAGMASK ((1 << LENGTH(tags)) - 1)
+#define TAGSLENGTH              (LENGTH(tags))
 #define TEXTW(X) (drw_fontset_getwidth(drw, (X)) + lrpad)
 
 #define SYSTEM_TRAY_REQUEST_DOCK 0
@@ -116,6 +117,10 @@ enum {
   NetWMWindowType,
   NetWMWindowTypeDialog,
   NetClientList,
+  NetDesktopNames,
+  NetDesktopViewport,
+  NetNumberOfDesktops,
+  NetCurrentDesktop,
   NetLast
 };                                           /* EWMH atoms */
 enum { Manager, Xembed, XembedInfo, XLast }; /* Xembed atoms */
@@ -308,12 +313,16 @@ static int sendevent(Window w, Atom proto, int m, long d0, long d1, long d2,
 static void sendmon(Client *c, Monitor *m);
 static void setborderpx(const Arg *arg);
 static void setclientstate(Client *c, long state);
+static void setcurrentdesktop(void);
+static void setdesktopnames(void);
 static void setfocus(Client *c);
 static void setfullscreen(Client *c, int fullscreen);
 static void setlayout(const Arg *arg);
 static void setcfact(const Arg *arg);
 static void setmfact(const Arg *arg);
+static void setnumdesktops(void);
 static void setup(void);
+static void setviewport(void);
 static void seturgent(Client *c, int urg);
 static void showhide(Client *c);
 static void sigchld(int unused);
@@ -332,6 +341,7 @@ static void toggleview(const Arg *arg);
 static void unfocus(Client *c, int setfocus);
 static void unmanage(Client *c, int destroyed);
 static void unmapnotify(XEvent *e);
+static void updatecurrentdesktop(void);
 static void updatebarpos(Monitor *m);
 static void updatebars(void);
 static void updateclientlist(void);
@@ -2291,6 +2301,17 @@ void setclientstate(Client *c, long state) {
                   PropModeReplace, (unsigned char *)data, 2);
 }
 
+void
+setcurrentdesktop(void){
+	long data[] = { 0 };
+	XChangeProperty(dpy, root, netatom[NetCurrentDesktop], XA_CARDINAL, 32, PropModeReplace, (unsigned char *)data, 1);
+}
+void setdesktopnames(void){
+	XTextProperty text;
+	Xutf8TextListToTextProperty(dpy, tags, TAGSLENGTH, XUTF8StringStyle, &text);
+	XSetTextProperty(dpy, root, &text, netatom[NetDesktopNames]);
+}
+
 int sendevent(Window w, Atom proto, int mask, long d0, long d1, long d2,
               long d3, long d4) {
   int n;
@@ -2324,6 +2345,12 @@ int sendevent(Window w, Atom proto, int mask, long d0, long d1, long d2,
   return exists;
 }
 
+void
+setnumdesktops(void){
+	long data[] = { TAGSLENGTH };
+	XChangeProperty(dpy, root, netatom[NetNumberOfDesktops], XA_CARDINAL, 32, PropModeReplace, (unsigned char *)data, 1);
+}
+
 void setfocus(Client *c) {
   if (!c->neverfocus) {
     XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
@@ -2459,6 +2486,10 @@ void setup(void) {
   xatom[Manager] = XInternAtom(dpy, "MANAGER", False);
   xatom[Xembed] = XInternAtom(dpy, "_XEMBED", False);
   xatom[XembedInfo] = XInternAtom(dpy, "_XEMBED_INFO", False);
+  netatom[NetDesktopViewport] = XInternAtom(dpy, "_NET_DESKTOP_VIEWPORT", False);
+  netatom[NetNumberOfDesktops] = XInternAtom(dpy, "_NET_NUMBER_OF_DESKTOPS", False);
+  netatom[NetCurrentDesktop] = XInternAtom(dpy, "_NET_CURRENT_DESKTOP", False);
+  netatom[NetDesktopNames] = XInternAtom(dpy, "_NET_DESKTOP_NAMES", False);
   /* init cursors */
   cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
   cursor[CurResize] = drw_cur_create(drw, XC_sizing);
@@ -2488,6 +2519,10 @@ void setup(void) {
   /* EWMH support per view */
   XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
                   PropModeReplace, (unsigned char *)netatom, NetLast);
+  	setnumdesktops();
+	setcurrentdesktop();
+	setdesktopnames();
+	setviewport();
   XDeleteProperty(dpy, root, netatom[NetClientList]);
   /* select events */
   wa.cursor = cursor[CurNormal]->cursor;
@@ -2499,6 +2534,11 @@ void setup(void) {
   grabkeys();
   focus(NULL);
 }
+void
+setviewport(void){
+	long data[] = { 0, 0 };
+	XChangeProperty(dpy, root, netatom[NetDesktopViewport], XA_CARDINAL, 32, PropModeReplace, (unsigned char *)data, 2);
+}
 
 void seturgent(Client *c, int urg) {
   XWMHints *wmh;
@@ -2629,6 +2669,7 @@ void toggletag(const Arg *arg) {
     focus(NULL);
     arrange(selmon);
   }
+  	updatecurrentdesktop();
 }
 
 void toggleview(const Arg *arg) {
@@ -2640,6 +2681,7 @@ void toggleview(const Arg *arg) {
     focus(NULL);
     arrange(selmon);
   }
+    	updatecurrentdesktop();
 }
 
 void unfocus(Client *c, int setfocus) {
@@ -2765,6 +2807,16 @@ void updateclientlist() {
                       PropModeAppend, (unsigned char *)&(c->win), 1);
 }
 
+void updatecurrentdesktop(void){
+	long rawdata[] = { selmon->tagset[selmon->seltags] };
+	int i=0;
+	while(*rawdata >> i+1){
+		i++;
+	}
+	long data[] = { i };
+	XChangeProperty(dpy, root, netatom[NetCurrentDesktop], XA_CARDINAL, 32, PropModeReplace, (unsigned char *)data, 1);
+}
+
 int updategeom(void) {
   int dirty = 0;
 
@@ -3065,6 +3117,7 @@ void view(const Arg *arg) {
     selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
   focus(NULL);
   arrange(selmon);
+  	updatecurrentdesktop();
 }
 
 Client *wintoclient(Window w) {