Harden DWM plugins against X11 stacking/keyboard grab races and speed up QMI status

src/dwm-plugins/ringtones_plugin.cpp

@@ -576,6 +576,7 @@ int runRingtonesApp(int argc, char** argv) {
   };
 
   auto showWindow = [&]() {
+    writeIntFile(activePidPath, static_cast<int>(::getpid()));
     closeOtherPlugins("ringtones");
     refreshData();
     for (size_t i = 0; i < tones.size(); ++i) {
@@ -584,7 +585,6 @@ int runRingtonesApp(int argc, char** argv) {
         break;
       }
     }
-    writeIntFile(activePidPath, static_cast<int>(::getpid()));
     if (!visible) {
       visible = true;
       XMapRaised(dpy, win);
@@ -592,14 +592,7 @@ int runRingtonesApp(int argc, char** argv) {
     } else {
       XRaiseWindow(dpy, win);
     }
-    for (int i = 0; i < 20; ++i) {
-      if (XGrabKeyboard(dpy, win, True, GrabModeAsync, GrabModeAsync,
-                        CurrentTime) == GrabSuccess) {
-        break;
-      }
-      usleep(2000);
-    }
-    XSetInputFocus(dpy, win, RevertToPointerRoot, CurrentTime);
+    grabPluginKeyboard(dpy, win);
     startupIgnoreUntilMs = nowMs() + 180;
     initialSoftkeysReleased = (querySoftkeysDown(dpy) == 0);
     softkeyPending = 0;
@@ -688,7 +681,13 @@ int runRingtonesApp(int argc, char** argv) {
         render();
       } else if (ev.type == VisibilityNotify && visible &&
                  ev.xvisibility.state != VisibilityUnobscured) {
-        XRaiseWindow(dpy, win);
+        if (isAnotherPluginActive("ringtones")) {
+          hideWindow();
+        } else {
+          XRaiseWindow(dpy, win);
+          grabPluginKeyboard(dpy, win);
+          render();
+        }
       } else if (ev.type == KeyRelease) {
         if (!initialSoftkeysReleased && querySoftkeysDown(dpy) == 0) {
           initialSoftkeysReleased = true;