Bug 1249 - NEWT X11: setVisible(false) IconicState not listening to _NET_WM_STATE_HIDDEN; setVisible(true) not restoring from _NET_WM_STATE_HIDDEN

Using Gnome Shell 3.14.4-1~deb8u1 disclosed an issue w/ our newly utilized IconicState/_NET_WM_STATE_HIDDEN,
i.e. visibleChanged(false) was never received.

This is a regression of commit 2d837a7a7130702ad36b694875613fae77c7ef06,
which utilizes WM_CHANGE_STATE_IDX + IconicState for visibility
on top-level windows.

This bug consist out of _two_ isssue:

1) setVisible(false) IconicState not listening to _NET_WM_STATE_HIDDEN
  Here, we 'listen' to _NET_WM_STATE_HIDDEN when receiving ConfigureNotify
  if supported _and_ XMapWindow has been issued.
  In such case existence/non-existence of _NET_WM_STATE_HIDDEN determines visibility.
  Otherwise, we have wait for MapNotify/UnmapNotify.

  The 'XMapWindow has been issued' criteria is tracked by new field 'JavaWindow.isMapped'
  and set/cleared when we actually issue XMapWindow/XUnmapWindow!

2) setVisible(true) not restoring from _NET_WM_STATE_HIDDEN
  It has been observed that restoring IconicState/_NET_WM_STATE_HIDDEN
  via XMapWindow or even NormalState may not work reliably on WMs.
  See <https://stackoverflow.com/questions/30192347/how-to-restore-a-window-with-xlib>

  Hence we restore from this WM state via NormalState _and_ _NET_ACTIVE_WINDOW.

Both strategies seem to work well on KDE as well as on Gnome.

4 files changed, 164 insertions, 108 deletions

diff --git a/src/newt/native/WindowsWindow.c b/src/newt/native/WindowsWindow.c
index 882559551..59e054516 100644
--- a/src/newt/native/WindowsWindow.c
+++ b/src/newt/native/WindowsWindow.c
@@ -2128,7 +2128,7 @@ JNIEXPORT jboolean JNICALL Java_jogamp_newt_driver_windows_WindowDriver_initIDs0
     positionChangedID = (*env)->GetMethodID(env, clazz, "positionChanged", "(ZII)V");
     focusChangedID = (*env)->GetMethodID(env, clazz, "focusChanged", "(ZZ)V");
     visibleChangedID = (*env)->GetMethodID(env, clazz, "visibleChanged", "(ZZ)V");
-    sizePosInsetsFocusVisibleChangedID = (*env)->GetMethodID(env, clazz, "sizePosInsetsFocusVisibleChanged", "(ZIIIIIIIIZZZ)V");
+    sizePosInsetsFocusVisibleChangedID = (*env)->GetMethodID(env, clazz, "sizePosInsetsFocusVisibleChanged", "(ZIIIIIIIIIIZ)V");
     windowDestroyNotifyID = (*env)->GetMethodID(env, clazz, "windowDestroyNotify", "(Z)Z");
     windowRepaintID = (*env)->GetMethodID(env, clazz, "windowRepaint", "(ZIIII)V");
     sendMouseEventID = (*env)->GetMethodID(env, clazz, "sendMouseEvent", "(SIIISF)V");
@@ -2414,8 +2414,8 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_windows_WindowDriver_InitWindow0
                            (jint)wud->xpos, (jint)wud->ypos,
                            (jint)wud->width, (jint)wud->height,
                            (jint)wud->insets.left, (jint)wud->insets.right, (jint)wud->insets.top, (jint)wud->insets.bottom,
-                           (jboolean)wud->focused,
-                           (jboolean)wud->visible,
+                           (jint)(wud->focused ? 1 : 0),
+                           (jint)(wud->visible ? 1 : 0),
                            JNI_FALSE);
     DBG_PRINT("*** WindowsWindow: InitWindow JNI callbacks done\n");
 
diff --git a/src/newt/native/X11Common.h b/src/newt/native/X11Common.h
index cdfb65d50..e46996441 100644
--- a/src/newt/native/X11Common.h
+++ b/src/newt/native/X11Common.h
@@ -71,7 +71,7 @@
 extern jclass X11NewtWindowClazz;
 extern jmethodID insetsChangedID;
 extern jmethodID visibleChangedID;
-extern jmethodID sizePosMaxInsetsChanged;
+extern jmethodID insetsVisibleChangedID;
 
 typedef struct {
     Window window;
@@ -83,13 +83,66 @@ typedef struct {
     uint32_t lastDesktop;
     Bool maxHorz;
     Bool maxVert;
+    Bool isMapped;
 } JavaWindow;
 
 JavaWindow * getJavaWindowProperty(JNIEnv *env, Display *dpy, Window window, jlong javaObjectAtom, Bool showWarning);
 
 Status NewtWindows_getRootAndParent (Display *dpy, Window w, Window * root_return, Window * parent_return);
 Bool NewtWindows_updateInsets(Display *dpy, JavaWindow * w, int *left, int *right, int *top, int *bottom);
-Bool NewtWindows_updateMaximized(Display *dpy, JavaWindow * w);
+Bool NewtWindows_updateMaximized(Display *dpy, JavaWindow * w, uint32_t netWMState);
+
+#define _MASK_NET_WM_STATE                   ( 1 <<  0 )
+#define _MASK_NET_WM_STATE_MODAL             ( 1 <<  1 )
+#define _MASK_NET_WM_STATE_STICKY            ( 1 <<  2 )
+#define _MASK_NET_WM_STATE_MAXIMIZED_VERT    ( 1 <<  3 )
+#define _MASK_NET_WM_STATE_MAXIMIZED_HORZ    ( 1 <<  4 )
+#define _MASK_NET_WM_STATE_SHADED            ( 1 <<  5 )
+#define _MASK_NET_WM_STATE_HIDDEN            ( 1 <<  8 )
+#define _MASK_NET_WM_STATE_FULLSCREEN        ( 1 <<  9 )
+#define _MASK_NET_WM_STATE_ABOVE             ( 1 << 10 )
+#define _MASK_NET_WM_STATE_BELOW             ( 1 << 11 )
+#define _MASK_NET_WM_STATE_DEMANDS_ATTENTION ( 1 << 12 )
+#define _MASK_NET_WM_STATE_FOCUSED           ( 1 << 13 )
+#define _MASK_NET_WM_BYPASS_COMPOSITOR       ( 1 << 14 )
+#define _MASK_NET_WM_DESKTOP                 ( 1 << 15 )
+#define _MASK_NET_CURRENT_DESKTOP            ( 1 << 16 )
+#define _MASK_NET_WM_WINDOW_TYPE             ( 1 << 17 )
+#define _MASK_NET_WM_WINDOW_TYPE_NORMAL      ( 1 << 18 )
+#define _MASK_NET_WM_WINDOW_TYPE_POPUP_MENU  ( 1 << 19 )
+#define _MASK_NET_FRAME_EXTENTS              ( 1 << 20 )
+#define _MASK_NET_SUPPORTED                  ( 1 << 21 )
+#define _MASK_NET_ACTIVE_WINDOW              ( 1 << 22 )
+#define _MASK_WM_CHANGE_STATE                ( 1 << 23 )
+#define _MASK_MOTIF_WM_HINTS                 ( 1 << 24 )
+
+#define _NET_WM_STATE_IDX 0
+#define _NET_WM_STATE_MODAL_IDX 1
+#define _NET_WM_STATE_STICKY_IDX 2
+#define _NET_WM_STATE_MAXIMIZED_VERT_IDX 3
+#define _NET_WM_STATE_MAXIMIZED_HORZ_IDX 4
+#define _NET_WM_STATE_SHADED_IDX 5
+#define _NET_WM_STATE_SKIP_TASKBAR_IDX 6
+#define _NET_WM_STATE_SKIP_PAGER_IDX 7
+#define _NET_WM_STATE_HIDDEN_IDX 8
+#define _NET_WM_STATE_FULLSCREEN_IDX 9
+#define _NET_WM_STATE_ABOVE_IDX 10
+#define _NET_WM_STATE_BELOW_IDX 11
+#define _NET_WM_STATE_DEMANDS_ATTENTION_IDX 12
+#define _NET_WM_STATE_FOCUSED_IDX 13
+#define _NET_WM_BYPASS_COMPOSITOR_IDX 14
+#define _NET_WM_DESKTOP_IDX 15
+#define _NET_CURRENT_DESKTOP_IDX 16
+#define _NET_WM_WINDOW_TYPE_IDX 17
+#define _NET_WM_WINDOW_TYPE_NORMAL_IDX 18
+#define _NET_WM_WINDOW_TYPE_POPUP_MENU_IDX 19
+#define _NET_FRAME_EXTENTS_IDX 20
+#define _NET_SUPPORTED_IDX 21
+#define _NET_ACTIVE_WINDOW_IDX 22
+#define _WM_CHANGE_STATE_IDX 23
+#define _MOTIF_WM_HINTS_IDX 24
+
+uint32_t NewtWindows_getNET_WM_STATE(Display *dpy, JavaWindow *w);
 
 #endif /* _X11COMMON_H_ */
 
diff --git a/src/newt/native/X11Display.c b/src/newt/native/X11Display.c
index 7ac6e8639..b3373827a 100644
--- a/src/newt/native/X11Display.c
+++ b/src/newt/native/X11Display.c
@@ -35,7 +35,7 @@
 jclass X11NewtWindowClazz = NULL;
 jmethodID insetsChangedID = NULL;
 jmethodID visibleChangedID = NULL;
-jmethodID sizePosMaxInsetsChangedID = NULL;
+jmethodID insetsVisibleChangedID = NULL;
 
 static const char * const ClazzNameX11NewtWindow = "jogamp/newt/driver/x11/WindowDriver";
 
@@ -53,6 +53,7 @@ static jmethodID windowRepaintID = NULL;
 static jmethodID sendMouseEventID = NULL;
 static jmethodID sendKeyEventID = NULL;
 static jmethodID sendMouseEventRequestFocusID = NULL;
+static jmethodID sizePosMaxInsetsVisibleChangedID = NULL;
 
 /**
  * Keycode
@@ -254,7 +255,8 @@ JNIEXPORT jboolean JNICALL Java_jogamp_newt_driver_x11_DisplayDriver_initIDs0
     positionChangedID = (*env)->GetMethodID(env, X11NewtWindowClazz, "positionChanged", "(ZII)V");
     focusChangedID = (*env)->GetMethodID(env, X11NewtWindowClazz, "focusChanged", "(ZZ)V");
     visibleChangedID = (*env)->GetMethodID(env, X11NewtWindowClazz, "visibleChanged", "(ZZ)V");
-    sizePosMaxInsetsChangedID = (*env)->GetMethodID(env, X11NewtWindowClazz, "sizePosMaxInsetsChanged", "(ZIIIIZZIIIIZ)V");
+    insetsVisibleChangedID = (*env)->GetMethodID(env, X11NewtWindowClazz, "insetsVisibleChanged", "(ZIIIII)V");
+    sizePosMaxInsetsVisibleChangedID = (*env)->GetMethodID(env, X11NewtWindowClazz, "sizePosMaxInsetsVisibleChanged", "(ZIIIIIIIIIIIZ)V");
     reparentNotifyID = (*env)->GetMethodID(env, X11NewtWindowClazz, "reparentNotify", "(J)V");
     windowDestroyNotifyID = (*env)->GetMethodID(env, X11NewtWindowClazz, "windowDestroyNotify", "(Z)Z");
     windowRepaintID = (*env)->GetMethodID(env, X11NewtWindowClazz, "windowRepaint", "(ZIIII)V");
@@ -271,7 +273,8 @@ JNIEXPORT jboolean JNICALL Java_jogamp_newt_driver_x11_DisplayDriver_initIDs0
         positionChangedID == NULL ||
         focusChangedID == NULL ||
         visibleChangedID == NULL ||
-        sizePosMaxInsetsChangedID == NULL ||
+        insetsVisibleChangedID == NULL ||
+        sizePosMaxInsetsVisibleChangedID == NULL ||
         reparentNotifyID == NULL ||
         windowDestroyNotifyID == NULL ||
         windowRepaintID == NULL ||
@@ -578,15 +581,38 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_DisplayDriver_DispatchMessage
                             evt.xconfigure.override_redirect, evt.xconfigure.window != evt.xconfigure.event);
                 if ( evt.xconfigure.window == evt.xconfigure.event ) {
                     // ignore child window change notification
-                    // update insets
+                    // insets: negative values are ignored
                     int left=-1, right=-1, top=-1, bottom=-1;
+                    uint32_t netWMState = NewtWindows_getNET_WM_STATE(dpy, jw);
+                    int visibleChange;
+                    if( jw->isMapped && 0 != ( _MASK_NET_WM_STATE_HIDDEN & jw->supportedAtoms ) ) {
+                        if( 0 != ( _MASK_NET_WM_STATE_HIDDEN & netWMState ) ) {
+                            visibleChange = 0;
+                        } else {
+                            visibleChange = 1;
+                        }
+                    } else {
+                        visibleChange = -1;
+                    }
+                    #ifdef VERBOSE_ON
+                        XWindowAttributes xwa;
+                        memset(&xwa, 0, sizeof(XWindowAttributes));
+                        XGetWindowAttributes(dpy, jw->window, &xwa);
+
+                        // map_state: IsUnmapped(0), IsUnviewable(1), IsViewable(2)
+                        DBG_PRINT( "X11: event . ConfigureNotify call %p - isMapped %d, visibleChanged %d, map_state %d\n", 
+                            (void*)evt.xconfigure.window, jw->isMapped, visibleChange, xwa.map_state);
+                    #endif
+
                     NewtWindows_updateInsets(dpy, jw, &left, &right, &top, &bottom);
-                    NewtWindows_updateMaximized(dpy, jw);
-                    (*env)->CallVoidMethod(env, jw->jwindow, sizePosMaxInsetsChangedID, JNI_FALSE,
+                    Bool maxChanged = NewtWindows_updateMaximized(dpy, jw, netWMState);
+                    (*env)->CallVoidMethod(env, jw->jwindow, sizePosMaxInsetsVisibleChangedID, JNI_FALSE,
                                             (jint) evt.xconfigure.x, (jint) evt.xconfigure.y,
                                             (jint) evt.xconfigure.width, (jint) evt.xconfigure.height,
-                                            (jboolean)jw->maxHorz, (jboolean)jw->maxVert,
+                                            (jint)(maxChanged ? ( jw->maxHorz ? 1 : 0 ) : -1), 
+                                            (jint)(maxChanged ? ( jw->maxVert ? 1 : 0 ) : -1),
                                             (jint)left, (jint)right, (jint)top, (jint)bottom,
+                                            (jint)visibleChange,
                                             JNI_FALSE);
                 }
                 break;
@@ -629,14 +655,13 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_DisplayDriver_DispatchMessage
                     evt.xmap.event!=evt.xmap.window);
                 if( evt.xmap.event == evt.xmap.window ) {
                     // ignore child window notification
-                    {
-                        // update insets
-                        int left, right, top, bottom;
-                        if( NewtWindows_updateInsets(dpy, jw, &left, &right, &top, &bottom) ) {
-                            (*env)->CallVoidMethod(env, jw->jwindow, insetsChangedID, JNI_FALSE, left, right, top, bottom);
-                        }
+                    // insets: negative values are ignored
+                    int left=-1, right=-1, top=-1, bottom=-1;
+                    if( NewtWindows_updateInsets(dpy, jw, &left, &right, &top, &bottom) ) {
+                        (*env)->CallVoidMethod(env, jw->jwindow, insetsVisibleChangedID, JNI_FALSE, left, right, top, bottom, 1);
+                    } else {
+                        (*env)->CallVoidMethod(env, jw->jwindow, visibleChangedID, JNI_FALSE, JNI_TRUE);
                     }
-                    (*env)->CallVoidMethod(env, jw->jwindow, visibleChangedID, JNI_FALSE, JNI_TRUE);
                 }
                 break;
 
diff --git a/src/newt/native/X11Window.c b/src/newt/native/X11Window.c
index c798af8e9..26029801b 100644
--- a/src/newt/native/X11Window.c
+++ b/src/newt/native/X11Window.c
@@ -85,53 +85,7 @@ static uintptr_t getPtrOut32Long(unsigned long * src) {
 #define _NET_WM_STATE_REMOVE 0
 #define _NET_WM_STATE_ADD 1
 
-#define _MASK_NET_WM_STATE                   ( 1 <<  0 )
-#define _MASK_NET_WM_STATE_MODAL             ( 1 <<  1 )
-#define _MASK_NET_WM_STATE_STICKY            ( 1 <<  2 )
-#define _MASK_NET_WM_STATE_MAXIMIZED_VERT    ( 1 <<  3 )
-#define _MASK_NET_WM_STATE_MAXIMIZED_HORZ    ( 1 <<  4 )
-#define _MASK_NET_WM_STATE_SHADED            ( 1 <<  5 )
-#define _MASK_NET_WM_STATE_HIDDEN            ( 1 <<  8 )
-#define _MASK_NET_WM_STATE_FULLSCREEN        ( 1 <<  9 )
-#define _MASK_NET_WM_STATE_ABOVE             ( 1 << 10 )
-#define _MASK_NET_WM_STATE_BELOW             ( 1 << 11 )
-#define _MASK_NET_WM_STATE_DEMANDS_ATTENTION ( 1 << 12 )
-#define _MASK_NET_WM_STATE_FOCUSED           ( 1 << 13 )
-#define _MASK_NET_WM_BYPASS_COMPOSITOR       ( 1 << 14 )
-#define _MASK_NET_WM_DESKTOP                 ( 1 << 15 )
-#define _MASK_NET_CURRENT_DESKTOP            ( 1 << 16 )
-#define _MASK_NET_WM_WINDOW_TYPE             ( 1 << 17 )
-#define _MASK_NET_WM_WINDOW_TYPE_NORMAL      ( 1 << 18 )
-#define _MASK_NET_WM_WINDOW_TYPE_POPUP_MENU  ( 1 << 19 )
-#define _MASK_NET_FRAME_EXTENTS              ( 1 << 20 )
-#define _MASK_NET_SUPPORTED                  ( 1 << 21 )
-#define _MASK_WM_CHANGE_STATE                ( 1 << 22 )
-#define _MASK_MOTIF_WM_HINTS                 ( 1 << 23 )
-
-#define _NET_WM_STATE_IDX 0
-#define _NET_WM_STATE_MODAL_IDX 1
-#define _NET_WM_STATE_STICKY_IDX 2
-#define _NET_WM_STATE_MAXIMIZED_VERT_IDX 3
-#define _NET_WM_STATE_MAXIMIZED_HORZ_IDX 4
-#define _NET_WM_STATE_SHADED_IDX 5
-#define _NET_WM_STATE_SKIP_TASKBAR_IDX 6
-#define _NET_WM_STATE_SKIP_PAGER_IDX 7
-#define _NET_WM_STATE_HIDDEN_IDX 8
-#define _NET_WM_STATE_FULLSCREEN_IDX 9
-#define _NET_WM_STATE_ABOVE_IDX 10
-#define _NET_WM_STATE_BELOW_IDX 11
-#define _NET_WM_STATE_DEMANDS_ATTENTION_IDX 12
-#define _NET_WM_STATE_FOCUSED_IDX 13
-#define _NET_WM_BYPASS_COMPOSITOR_IDX 14
-#define _NET_WM_DESKTOP_IDX 15
-#define _NET_CURRENT_DESKTOP_IDX 16
-#define _NET_WM_WINDOW_TYPE_IDX 17
-#define _NET_WM_WINDOW_TYPE_NORMAL_IDX 18
-#define _NET_WM_WINDOW_TYPE_POPUP_MENU_IDX 19
-#define _NET_FRAME_EXTENTS_IDX 20
-#define _NET_SUPPORTED_IDX 21
-#define _WM_CHANGE_STATE_IDX 22
-#define _MOTIF_WM_HINTS_IDX 23
+/** Sync w/ X11Common.h MASK and IDX */
 static const char * _ALL_ATOM_NAMES[] = { 
     /*  0 */ "_NET_WM_STATE",
     /*  1 */ "_NET_WM_STATE_MODAL",
@@ -155,8 +109,9 @@ static const char * _ALL_ATOM_NAMES[] = {
     /* 19 */ "_NET_WM_WINDOW_TYPE_POPUP_MENU",
     /* 20 */ "_NET_FRAME_EXTENTS",
     /* 21 */ "_NET_SUPPORTED",
-    /* 22 */ "WM_CHANGE_STATE",
-    /* 23 */ "_MOTIF_WM_HINTS"
+    /* 22 */ "_NET_ACTIVE_WINDOW",
+    /* 23 */ "WM_CHANGE_STATE",
+    /* 24 */ "_MOTIF_WM_HINTS"
 };
 static const uint32_t _ALL_ATOM_COUNT = (uint32_t)(sizeof(_ALL_ATOM_NAMES)/sizeof(const char *));
 
@@ -185,7 +140,6 @@ static uint32_t NewtWindows_getSupportedFeaturesEWMH(Display *dpy, Window root,
     uint32_t res = 0;
     Status s;
 
-    XSync(dpy, False);
     if ( Success == (s = XGetWindowProperty(dpy, root, allAtoms[_NET_SUPPORTED_IDX], 0, 1024, False, AnyPropertyType,
                                             &type, &form, &props_count, &remain, (unsigned char**)&properties)) ) {
         if( NULL != properties ) {
@@ -202,7 +156,16 @@ static uint32_t NewtWindows_getSupportedFeaturesEWMH(Display *dpy, Window root,
     }
     return res;
 }
-static uint32_t NewtWindows_getNET_WM_STATE(Display *dpy, Window window, Atom * allAtoms, Bool verbose) {
+uint32_t NewtWindows_getNET_WM_STATE(Display *dpy, JavaWindow *w) {
+    Bool verbose = 
+#ifdef VERBOSE_ON
+                        True
+#else
+                        False
+#endif
+    ;
+    Window window = w->window;
+    Atom * allAtoms = w->allAtoms;
     Atom * properties = NULL;
     Atom type = 0;
     unsigned long props_count = 0, remain = 0;
@@ -210,7 +173,6 @@ static uint32_t NewtWindows_getNET_WM_STATE(Display *dpy, Window window, Atom *
     uint32_t res = 0;
     Status s;
 
-    XSync(dpy, False);
     if ( Success == (s = XGetWindowProperty(dpy, window, allAtoms[_NET_WM_STATE_IDX], 0, 1024, False, AnyPropertyType,
                                             &type, &form, &props_count, &remain, (unsigned char**)&properties)) ) {
         if( NULL != properties ) {
@@ -220,7 +182,7 @@ static uint32_t NewtWindows_getNET_WM_STATE(Display *dpy, Window window, Atom *
             XFree(properties);
         }
         if(verbose) {
-            fprintf(stderr, "**************** X11: WM_STATE of %p: 0x%X\n", (void*)window, res);
+            fprintf(stderr, "**************** X11: WM_STATE of %p: %d props -> 0x%X\n", (void*)window, (int)props_count, res);
         }
     } else if(verbose) {
         fprintf(stderr, "**************** X11: WM_STATE of %p: XGetWindowProperty failed: %d\n", (void*)window, s);
@@ -249,6 +211,7 @@ static JavaWindow* createJavaWindowProperty(JNIEnv *env, Display *dpy, Window ro
         res->lastDesktop = 0; //undef
         res->maxHorz = False;
         res->maxVert = False;
+        res->isMapped=False;
     }
     unsigned long jogl_java_object_data[2]; // X11 is based on 'unsigned long'
     int nitems_32 = putPtrIn32Long( jogl_java_object_data, (uintptr_t) res);
@@ -352,7 +315,6 @@ static void NewtWindows_setCWAbove(Display *dpy, Window w) {
     memset(&xwc, 0, sizeof(XWindowChanges));
     xwc.stack_mode = Above;
     XConfigureWindow(dpy, w, CWStackMode, &xwc);
-    XSync(dpy, False);
 }
 static Status NewtWindows_getWindowPositionRelative2Parent (Display *dpy, Window w, int *x_return, int *y_return) {
     Window root_return;
@@ -440,8 +402,7 @@ static void NewtWindows_setDecorations (Display *dpy, JavaWindow *w, Bool decora
 #ifdef DECOR_USE_EWMH
     XChangeProperty( dpy, w->window, w->allAtoms[_NET_WM_WINDOW_TYPE_IDX], XA_ATOM, 32, PropModeReplace, (unsigned char *)&types, ntypes);
 #endif
-
-    XSync(dpy, False);
+    XFlush(dpy);
 }
 
 static Bool NewtWindows_hasDecorations (Display *dpy, JavaWindow * w) {
@@ -473,7 +434,6 @@ static void NewtWindows_requestFocus (Display *dpy, JavaWindow * jw, Bool force)
     Window focus_return;
     int revert_to_return;
 
-    XSync(dpy, False);
     XGetInputFocus(dpy, &focus_return, &revert_to_return);
     DBG_PRINT( "X11: requestFocus dpy %p,win %p, force %d, hasFocus %d\n", dpy, (void*)jw->window, force, focus_return==jw->window);
 
@@ -488,8 +448,8 @@ static void NewtWindows_requestFocus (Display *dpy, JavaWindow * jw, Bool force)
             XSetInputFocus(dpy, jw->window, RevertToParent, CurrentTime);
         }
     }
+    XFlush(dpy);
     DBG_PRINT( "X11: requestFocus dpy %p,win %p, force %d - FIN\n", dpy, (void*)jw->window, force);
-    XSync(dpy, False);
 }
 
 Bool NewtWindows_updateInsets(Display *dpy, JavaWindow * w, int *left, int *right, int *top, int *bottom) {
@@ -513,16 +473,9 @@ Bool NewtWindows_updateInsets(Display *dpy, JavaWindow * w, int *left, int *righ
     return False; // Error
 }
 
-Bool NewtWindows_updateMaximized(Display *dpy, JavaWindow * w) {
-    uint32_t state = NewtWindows_getNET_WM_STATE(dpy, w->window, w->allAtoms, 
-#ifdef VERBOSE_ON
-                        True
-#else
-                        False
-#endif
-                     );
-    Bool maxHorz = 0 != ( _MASK_NET_WM_STATE_MAXIMIZED_HORZ & state ) ;
-    Bool maxVert = 0 != ( _MASK_NET_WM_STATE_MAXIMIZED_VERT & state ) ;
+Bool NewtWindows_updateMaximized(Display *dpy, JavaWindow * w, uint32_t netWMState) {
+    Bool maxHorz = 0 != ( _MASK_NET_WM_STATE_MAXIMIZED_HORZ & netWMState ) ;
+    Bool maxVert = 0 != ( _MASK_NET_WM_STATE_MAXIMIZED_VERT & netWMState ) ;
     if( w->maxHorz != maxHorz || w->maxVert != maxVert ) {
         w->maxHorz = maxHorz;
         w->maxVert = maxVert;
@@ -558,7 +511,7 @@ static void NewtWindows_setWindowTypeEWMH (Display *dpy, JavaWindow * w, int typ
     } // else { }
     if( 0 != types[0] ) {
         XChangeProperty( dpy, w->window, w->allAtoms[_NET_WM_WINDOW_TYPE_IDX], XA_ATOM, 32, PropModeReplace, (unsigned char *)&types, 1);
-        XSync(dpy, False);
+        XFlush(dpy);
     }
 }
 
@@ -694,7 +647,7 @@ static void NewtWindows_setStackingEWMHFlags (Display *dpy, Window root, JavaWin
                                      changeMaxVert ? _NET_WM_STATE_MAXIMIZED_VERT_IDX : 0, 
                                      enable);
     }
-    XSync(dpy, False);
+    XFlush(dpy);
     DBG_PRINT( "X11: setStackingEWMHFlags ON %d, change[Sticky %d, Fullscreen %d, Above %d, Below %d, MaxV %d, MaxH %d]\n", 
         enable, changeSticky, changeFullscreen, changeAbove, changeBelow, changeMaxVert, changeMaxHorz);
 }
@@ -709,35 +662,49 @@ static Bool WaitForUnmapNotify( Display *dpy, XEvent *event, XPointer arg ) {
 
 static void NewtWindows_setVisible(Display *dpy, Window root, JavaWindow* jw, Bool visible, Bool useWM, Bool waitForNotify) {
     XEvent event;
-    if( !visible && useWM && 0 != ( _MASK_NET_WM_STATE_HIDDEN & jw->supportedAtoms ) ) {
-        DBG_PRINT( "X11: setVisible -> %d, method: IconicState, wait %d, window %p\n", (int)visible, (int)waitForNotify, (void*)jw->window);
-        // It has been experienced that UnmapNotify is not sent for child windows when using IconicState!
+    DBG_PRINT( "X11: setVisible -> %d, useWM: %d, wait %d, window %p\n", (int)visible, (int)useWM, (int)waitForNotify, (void*)jw->window);
+    if( useWM && jw->isMapped && 0 != ( _MASK_NET_WM_STATE_HIDDEN & jw->supportedAtoms ) ) {
+        // It has been experienced that MapNotify/UnmapNotify is not sent for windows when using NormalState/IconicState!
+        // See X11Display.c::Java_jogamp_newt_driver_x11_DisplayDriver_DispatchMessages0 case ConfigureNotify
         XEvent xev;
         memset ( &xev, 0, sizeof(xev) );
         xev.type = ClientMessage;
         xev.xclient.window = jw->window;
         xev.xclient.message_type = jw->allAtoms[_WM_CHANGE_STATE_IDX];
         xev.xclient.format = 32;
-        xev.xclient.data.l[0] = IconicState;
+        if( visible ) {
+            xev.xclient.data.l[0] = NormalState;
+        } else {
+            xev.xclient.data.l[0] = IconicState;
+        }
         XSendEvent ( dpy, root, False, SubstructureNotifyMask | SubstructureRedirectMask, &xev );
-        // NewtWindows_sendNET_WM_STATE(dpy, root, jw, _NET_WM_STATE_HIDDEN_IDX, 0, !visible);
-        if(waitForNotify) {
-            XIfEvent( dpy, &event, WaitForUnmapNotify, (XPointer) jw->window );
+        if( visible ) {
+            // NormalState may not work on some WMs (Gnome, KDE) ?
+            memset ( &xev, 0, sizeof(xev) );
+            xev.type = ClientMessage;
+            xev.xclient.window = jw->window;
+            xev.xclient.message_type = jw->allAtoms[_NET_ACTIVE_WINDOW_IDX];
+            xev.xclient.format = 32;
+            xev.xclient.data.l[0] = 1; //source indication for normal applications
+            xev.xclient.data.l[1] = CurrentTime;
+            XSendEvent ( dpy, root, False, SubstructureNotifyMask | SubstructureRedirectMask, &xev );
         }
     } else {
-        DBG_PRINT( "X11: setVisible -> %d, method: Map/Unmap, wait %d, window %p\n", (int)visible, (int)waitForNotify, (void*)jw->window);
         if( visible ) {
             XMapRaised(dpy, jw->window);
             if(waitForNotify) {
                 XIfEvent( dpy, &event, WaitForMapNotify, (XPointer) jw->window );
             }
+            jw->isMapped=True;
         } else {
             XUnmapWindow(dpy, jw->window);
             if(waitForNotify) {
                 XIfEvent( dpy, &event, WaitForUnmapNotify, (XPointer) jw->window );
             }
+            jw->isMapped=False;
         }
     }
+    XFlush(dpy);
 }
 
 
@@ -771,7 +738,7 @@ static void NewtWindows_setPosSize(Display *dpy, JavaWindow* w, jint x, jint y,
             xwc.height=height;
         }
         XConfigureWindow(dpy, w->window, flags, &xwc);
-        XSync(dpy, False);
+        XFlush(dpy);
     }
 }
 
@@ -910,7 +877,8 @@ JNIEXPORT jlongArray JNICALL Java_jogamp_newt_driver_x11_WindowDriver_CreateWind
     // we can pre-map the window here to be able to gather the insets and position.
     {
         XEvent event;
-        int left=0, right=0, top=0, bottom=0;
+        // insets: negative values are ignored
+        int left=-1, right=-1, top=-1, bottom=-1;
         const unsigned char * pixelPtr = NULL;
 
         // NOTE: MUST BE DIRECT BUFFER, since _NET_WM_ICON Atom uses buffer directly!
@@ -925,18 +893,20 @@ JNIEXPORT jlongArray JNICALL Java_jogamp_newt_driver_x11_WindowDriver_CreateWind
 
         XMapWindow(dpy, window);
         XIfEvent( dpy, &event, WaitForMapNotify, (XPointer) window ); // wait to get proper insets values
-
-        XSync(dpy, False);
+        javaWindow->isMapped=True;
 
         if( JNI_FALSE == pixels_is_direct && NULL != pixelPtr ) {
             (*env)->ReleasePrimitiveArrayCritical(env, pixels, (void*)pixelPtr, JNI_ABORT);  
         }
 
         // send insets before visibility, allowing java code a proper sync point!
+        XSync(dpy, False);
         if( NewtWindows_updateInsets(dpy, javaWindow, &left, &right, &top, &bottom) ) {
-            (*env)->CallVoidMethod(env, javaWindow->jwindow, insetsChangedID, JNI_FALSE, left, right, top, bottom);
+            (*env)->CallVoidMethod(env, javaWindow->jwindow, insetsVisibleChangedID, JNI_FALSE, left, right, top, bottom, 1);
+        } else {
+            (*env)->CallVoidMethod(env, javaWindow->jwindow, visibleChangedID, JNI_FALSE, JNI_TRUE);
+            left=0; right=0; top=0; bottom=0;
         }
-        (*env)->CallVoidMethod(env, javaWindow->jwindow, visibleChangedID, JNI_FALSE, JNI_TRUE);
 
         if( TST_FLAG_IS_AUTOPOSITION(flags) ) {
             // get position from WM
@@ -974,6 +944,7 @@ JNIEXPORT jlongArray JNICALL Java_jogamp_newt_driver_x11_WindowDriver_CreateWind
             NewtWindows_setMinMaxSize(dpy, javaWindow, width, height, width, height);
         }
     }
+    XFlush(dpy);
     handles[0] = (jlong)(intptr_t)window;
     handles[1] = (jlong)(intptr_t)javaWindow;
     jhandles = (*env)->NewLongArray(env, 2);
@@ -1053,6 +1024,7 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_WindowDriver_CloseWindow0
     XGetWindowAttributes(dpy, jw->window, &xwa); // prefetch colormap to be destroyed after window destruction
     XSelectInput(dpy, jw->window, 0);
     XUnmapWindow(dpy, jw->window);
+    jw->isMapped=False;
 
     // Drain all events related to this window ..
     Java_jogamp_newt_driver_x11_DisplayDriver_DispatchMessages0(env, obj, display, 
@@ -1148,6 +1120,8 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_WindowDriver_reconfigureWindo
         TST_FLAG_CHANGE_STICKY(flags), TST_FLAG_IS_STICKY(flags),
         fsEWMHFlags);
 
+    XSync(dpy, False);
+
     // FS Note: To toggle FS, utilizing the _NET_WM_STATE_FULLSCREEN WM state should be enough.
     //          However, we have to consider other cases like reparenting and WM which don't support it.
     #if 0    // Also doesn't work work properly w/ Unity WM
@@ -1189,8 +1163,9 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_WindowDriver_reconfigureWindo
         XReparentWindow( dpy, jw->window, parent, x, y ); // actual reparent call
         #ifdef REPARENT_WAIT_FOR_REPARENT_NOTIFY
             XIfEvent( dpy, &event, WaitForReparentNotify, (XPointer) jw->window );
+        #else
+            XSync(dpy, False);
         #endif
-        XSync(dpy, False);
         XSetWMProtocols(dpy, jw->window, &wm_delete_atom, 1); // windowDeleteAtom
         // Fix for Unity WM, i.e. _remove_ persistent previous states
         NewtWindows_setStackingEWMHFlags(dpy, root, jw, fsEWMHFlags, False);
@@ -1232,10 +1207,12 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_WindowDriver_reconfigureWindo
         // CHILD: out -> in
         DBG_PRINT( "X11: reconfigureWindow0 PARENTING out->in\n");
         XReparentWindow( dpy, jw->window, parent, x, y ); // actual reparent call
+        XFlush(dpy);
         #ifdef REPARENT_WAIT_FOR_REPARENT_NOTIFY
             XIfEvent( dpy, &event, WaitForReparentNotify, (XPointer) jw->window );
+        #else
+            XSync(dpy, False);
         #endif
-        XSync(dpy, False);
     }
 
     if( tempInvisible ) {
@@ -1247,7 +1224,6 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_WindowDriver_reconfigureWindo
         if( TST_FLAG_IS_VISIBLE(flags) ) {
             DBG_PRINT( "X11: reconfigureWindow0 VISIBLE ON\n");
             NewtWindows_setVisible(dpy, root, jw, True /* visible */, useWM, False /* wait */);
-            XSync(dpy, False);
             if( !TST_FLAG_IS_MAXIMIZED_ANY(flags) ) {
                 // WM may disregard pos/size XConfigureWindow requests for invisible windows!
                 DBG_PRINT( "X11: reconfigureWindow0 setPosSize.2 %d/%d %dx%d\n", x, y, width, height);
@@ -1256,7 +1232,6 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_WindowDriver_reconfigureWindo
         } else {
             DBG_PRINT( "X11: reconfigureWindow0 VISIBLE OFF\n");
             NewtWindows_setVisible(dpy, root, jw, False /* visible */, useWM, False /* wait */);
-            XSync(dpy, False);
         }
     }
 
@@ -1277,6 +1252,7 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_WindowDriver_reconfigureWindo
             NewtWindows_setMinMaxSize(dpy, jw, -1, -1, -1, -1); // FIXME: ..
         }
     }
+    XFlush(dpy);
     DBG_PRINT( "X11: reconfigureWindow0 X (full)\n");
 }
 
@@ -1288,7 +1264,9 @@ JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_WindowDriver_reconfigureWindo
 JNIEXPORT void JNICALL Java_jogamp_newt_driver_x11_WindowDriver_requestFocus0
   (JNIEnv *env, jclass clazz, jlong display, jlong javaWindow, jboolean force)
 {
-    NewtWindows_requestFocus ( (Display *) (intptr_t) display, (JavaWindow*)(intptr_t)javaWindow, JNI_TRUE==force?True:False ) ;
+    Display * dpy = (Display *) (intptr_t) display;
+    XSync(dpy, False);
+    NewtWindows_requestFocus ( dpy, (JavaWindow*)(intptr_t)javaWindow, JNI_TRUE==force?True:False ) ;
 }
 
 /*