events.c

    }
}

static void
handleButtonRelease (DisplayInfo *display_info, XButtonEvent * ev)
{
    ScreenInfo *screen_info = NULL;
    TRACE ("entering handleButtonRelease");

#if CHECK_BUTTON_TIME
    /* Avoid treating the same event twice */
    if (!check_button_time (ev))
    {
        TRACE ("ignoring ButtonRelease event because it has been already handled");
        return;
    }
#endif

    /* Get the screen structure from the root of the event */
    screen_info = myDisplayGetScreenFromRoot (display_info, ev->root);
    if (!screen_info)
    {
        return;
    }

    XSendEvent (display_info->dpy, screen_info->xfwm4_win, FALSE, SubstructureNotifyMask, (XEvent *) ev);
}

static void
handleDestroyNotify (DisplayInfo *display_info, XDestroyWindowEvent * ev)
{
    Client *c = NULL;
#ifdef ENABLE_KDE_SYSTRAY_PROXY
    ScreenInfo *screen_info = NULL;
#endif

    TRACE ("entering handleDestroyNotify");
    TRACE ("DestroyNotify on window (0x%lx)", ev->window);

#ifdef ENABLE_KDE_SYSTRAY_PROXY
    screen_info = myDisplayGetScreenFromSystray (display_info, ev->window);
    if  (screen_info)
    {
        /* systray window is gone */
        screen_info->systray = None;
        return;
    }
#endif

    c = myDisplayGetClientFromWindow (display_info, ev->window, WINDOW);
    if (c)
    {
        TRACE ("DestroyNotify for \"%s\" (0x%lx)", c->name, c->window);
        clientPassFocus (c->screen_info, c, c);
        clientUnframe (c, FALSE);
    }
}

static void
handleMapRequest (DisplayInfo *display_info, XMapRequestEvent * ev)
{
    Client *c = NULL;

    TRACE ("entering handleMapRequest");
    TRACE ("MapRequest on window (0x%lx)", ev->window);

    if (ev->window == None)
    {
        TRACE ("Mapping None ???");
        return;
    }

    c = myDisplayGetClientFromWindow (display_info, ev->window, WINDOW);
    if (c)
    {
        ScreenInfo *screen_info = c->screen_info;

        TRACE ("handleMapRequest: clientShow");

        if (FLAG_TEST (c->xfwm_flags, XFWM_FLAG_MAP_PENDING))
        {
            TRACE ("Ignoring MapRequest on window (0x%lx)", ev->window);
            return;
        }

        clientShow (c, TRUE);
        clientClearAllShowDesktop (screen_info);

        if (FLAG_TEST (c->flags, CLIENT_FLAG_STICKY) ||
            (c->win_workspace == screen_info->current_ws))
        {
            clientFocusNew(c);
        }
    }
    else
    {
        TRACE ("handleMapRequest: clientFrame");
        clientFrame (display_info, ev->window, FALSE);
    }
}

static void
handleMapNotify (DisplayInfo *display_info, XMapEvent * ev)
{
    Client *c = NULL;

    TRACE ("entering handleMapNotify");
    TRACE ("MapNotify on window (0x%lx)", ev->window);

    c = myDisplayGetClientFromWindow (display_info, ev->window, WINDOW);
    if (c)
    {
        TRACE ("MapNotify for \"%s\" (0x%lx)", c->name, c->window);
        if (FLAG_TEST (c->xfwm_flags, XFWM_FLAG_MAP_PENDING))
        {
            FLAG_UNSET (c->xfwm_flags, XFWM_FLAG_MAP_PENDING);
        }
        compositorMapWindow (display_info, c->frame);
    }
    else if (myDisplayGetScreenFromRoot (display_info, ev->event))
    {
        compositorMapWindow (display_info, ev->window);
    }
}

static void
handleUnmapNotify (DisplayInfo *display_info, XUnmapEvent * ev)
{
    ScreenInfo *screen_info = NULL;
    Client *c = NULL;

    TRACE ("entering handleUnmapNotify");
    TRACE ("UnmapNotify on window (0x%lx)", ev->window);
    
    if (ev->from_configure)
    {
        TRACE ("Ignoring UnmapNotify caused by parent's resize");
        return;
    }

    screen_info = myDisplayGetScreenFromWindow (display_info, ev->window);
    if (screen_info && (ev->event != ev->window) && (ev->event != screen_info->xroot || !ev->send_event))
    {
        TRACE ("handleUnmapNotify (): Event ignored");
        return;
    }

    c = myDisplayGetClientFromWindow (display_info, ev->window, WINDOW);
    if (c)
    {
        TRACE ("UnmapNotify for \"%s\" (0x%lx)", c->name, c->window);
        TRACE ("ignore_unmap for \"%s\" is %i", c->name, c->ignore_unmap);

        if (FLAG_TEST (c->xfwm_flags, XFWM_FLAG_MAP_PENDING))
        {
            /* 
             * This UnmapNotify event is caused by reparenting
             * so we just ignore it, so the window won't return 
             * to withdrawn state by mistake.
             */
            TRACE ("Client \"%s\" is not mapped, event ignored", c->name);
            return;
        }

        screen_info = c->screen_info;
        clientPassFocus (screen_info, c, c);
        compositorUnmapWindow (display_info, c->frame);
        
        /*
         * ICCCM spec states that a client wishing to switch
         * to WithdrawnState should send a synthetic UnmapNotify 
         * with the event field set to root if the client window 
         * is already unmapped.
         * Therefore, bypass the ignore_unmap counter and
         * unframe the client.
         */
        if ((ev->event == screen_info->xroot) && (ev->send_event))
        {
            TRACE ("ICCCM UnmapNotify for \"%s\"", c->name);
            clientUnframe (c, FALSE);
            return;
        }
        if (c->ignore_unmap)
        {
            c->ignore_unmap--;
            TRACE ("ignore_unmap for \"%s\" is now %i", 
                 c->name, c->ignore_unmap);
        }
        else
        {
            TRACE ("unmapping \"%s\" as ignore_unmap is %i", 
                 c->name, c->ignore_unmap);
            clientUnframe (c, FALSE);
        }
    }
    else
    {
        compositorUnmapWindow (display_info, ev->window);
    }
}

static gboolean
update_screen_idle_cb (gpointer data)
{
    ScreenInfo *screen_info = (ScreenInfo *) data;
    DisplayInfo *display_info = screen_info->display_info;
    
    setNetWorkarea (display_info, screen_info->xroot, screen_info->workspace_count, 
                    gdk_screen_get_width (screen_info->gscr),
                    gdk_screen_get_height (screen_info->gscr),
                    screen_info->margins);
    placeSidewalks (screen_info, screen_info->params->wrap_workspaces);
    clientScreenResize (screen_info);
    compositorUpdateScreenSize (screen_info);
    return FALSE;
}

static void
handleConfigureNotify (DisplayInfo *display_info, XConfigureEvent * ev)
{
    ScreenInfo *screen_info = NULL;

    TRACE ("entering handleConfigureNotify");

    screen_info = myDisplayGetScreenFromRoot (display_info, ev->window);
    if (!screen_info)
    {
        return;
    }
    
    if (display_info->have_xrandr)
    {
#ifdef HAVE_RANDR
        XRRUpdateConfiguration ((XEvent *) ev);
#endif
    }
    else
    {
        TRACE ("ConfigureNotify on the screen_info->xroot win (0x%lx)", ev->window);
        screen_info->xscreen->width  = ev->width;
        screen_info->xscreen->height = ev->height;
    }
    /* 
       We need to use an idle function to update our screen layout to give gdk the
       time to update its internal structures, ie let the current event be processed
       by gdk otherwise the functions gdk_screen_get_width() and gdk_screen_get_height()
       don't return accurate values...
     */
    g_idle_add_full (G_PRIORITY_DEFAULT_IDLE, update_screen_idle_cb, screen_info, NULL);
}

static void
handleConfigureRequest (DisplayInfo *display_info, XConfigureRequestEvent * ev)
{
    Client *c = NULL;
    XWindowChanges wc;
    XEvent otherEvent;

    TRACE ("entering handleConfigureRequest");
    TRACE ("ConfigureRequest on window (0x%lx)", ev->window);

    /* Compress events - logic taken from kwin */
    while (XCheckTypedWindowEvent (display_info->dpy, ev->window, ConfigureRequest, &otherEvent))
    {
        /* Update the display time */
        myDisplayUpdateCurentTime (display_info, &otherEvent);

        if (otherEvent.xconfigurerequest.value_mask == ev->value_mask)
        {
            ev = &otherEvent.xconfigurerequest;
        }
        else
        {
            XPutBackEvent (display_info->dpy, &otherEvent);
            break;
        }
    }

    wc.x = ev->x;
    wc.y = ev->y;
    wc.width = ev->width;
    wc.height = ev->height;
    wc.sibling = ev->above;
    wc.stack_mode = ev->detail;
    wc.border_width = ev->border_width;

    c = myDisplayGetClientFromWindow (display_info, ev->window, WINDOW);
    if (!c)
    {
        /* Some app tend or try to manipulate the wm frame to achieve fullscreen mode */
        c = myDisplayGetClientFromWindow (display_info, ev->window, FRAME);
        if (c)
        {
            TRACE ("client %s (0x%lx) is attempting to manipulate its frame!", c->name, c->window);
            if (ev->value_mask & CWX)
            {
                wc.x += frameLeft (c);
            }
            if (ev->value_mask & CWY)
            {
                wc.y += frameTop (c);
            }
            if (ev->value_mask & CWWidth)
            {
                wc.width -= frameLeft (c) + frameRight (c);
            }
            if (ev->value_mask & CWHeight)
            {
                wc.height -= frameTop (c) + frameBottom (c);
            }
            /* We don't allow changing stacking order by accessing the frame
               window because that would break the layer management in xfwm4
             */
            ev->value_mask &= ~(CWSibling | CWStackMode);
        }
    }
    if (c)
    {
        gboolean constrained = FALSE;
        ScreenInfo *screen_info = c->screen_info;

        TRACE ("handleConfigureRequest managed window \"%s\" (0x%lx)", c->name, c->window);
        if (FLAG_TEST (c->xfwm_flags, XFWM_FLAG_MOVING_RESIZING))
        {
            /* Sorry, but it's not the right time for configure request */
            return;
        }
        if (c->type == WINDOW_DESKTOP)
        {
            /* Ignore stacking request for DESKTOP windows */
            ev->value_mask &= ~(CWSibling | CWStackMode);
        }
        clientCoordGravitate (c, APPLY, &wc.x, &wc.y);
        if (FLAG_TEST (c->flags, CLIENT_FLAG_FULLSCREEN))
        {
            GdkRectangle rect;
            gint monitor_nbr;
            int cx, cy;

            /* size request from fullscreen windows get fullscreen */

            cx = frameX (c) + (frameWidth (c) / 2);
            cy = frameY (c) + (frameHeight (c) / 2);

            monitor_nbr = find_monitor_at_point (screen_info->gscr, cx, cy);
            gdk_screen_get_monitor_geometry (screen_info->gscr, monitor_nbr, &rect);

            wc.x = rect.x;
            wc.y = rect.y;
            wc.width = rect.width;
            wc.height = rect.height;

            ev->value_mask |= (CWX | CWY | CWWidth | CWHeight);
        }
        /* Clean up buggy requests that set all flags */
        if ((ev->value_mask & CWX) && (wc.x == c->x))
        {
            ev->value_mask &= ~CWX;
        }
        if ((ev->value_mask & CWY) && (wc.y == c->y))
        {
            ev->value_mask &= ~CWY;
        }
        if ((ev->value_mask & CWWidth) && (wc.width == c->width))
        {
            ev->value_mask &= ~CWWidth;
        }
        if ((ev->value_mask & CWHeight) && (wc.height == c->height))
        {
            ev->value_mask &= ~CWHeight;
        }
        /* Still a move/resize after cleanup? */
        if (ev->value_mask & (CWX | CWY | CWWidth | CWHeight))
        {
            if (FLAG_TEST (c->flags, CLIENT_FLAG_MAXIMIZED))
            {
                clientRemoveMaximizeFlag (c);
            }
            constrained = TRUE;
        }
        if (ev->value_mask & CWStackMode)
        {
            clientPassGrabMouseButton (NULL);
        }
#if 0
        /* Let's say that if the client performs a XRaiseWindow, we show the window if hidden */
        if ((ev->value_mask & CWStackMode) && (wc.stack_mode == Above))
        {
            if ((c->win_workspace == screen_info->current_ws) || 
                (FLAG_TEST (c->flags, CLIENT_FLAG_STICKY)))
            {
                if (FLAG_TEST (c->flags, CLIENT_FLAG_ICONIFIED))
                {
                    clientShow (c, TRUE);
                    clientClearAllShowDesktop (screen_info);
                }
            }
        }
#endif
        clientConfigure (c, &wc, ev->value_mask, (constrained ? CFG_CONSTRAINED : 0) | CFG_REQUEST);
    }
    else
    {
        TRACE ("unmanaged configure request for win 0x%lx", ev->window);
        XConfigureWindow (display_info->dpy, ev->window, ev->value_mask, &wc);
    }
}

static void
handleEnterNotify (DisplayInfo *display_info, XCrossingEvent * ev)
{
    static Time lastresist = (Time) 0;
    Client *c = NULL;
    ScreenInfo *screen_info = NULL;
    gboolean warp_pointer = FALSE;

    TRACE ("entering handleEnterNotify");

    if ((ev->mode == NotifyGrab) || (ev->mode == NotifyUngrab)
        || (ev->detail > NotifyNonlinearVirtual))
    {
        /* We're not interested in such notifications */
        return;
    }

    TRACE ("EnterNotify on window (0x%lx)", ev->window);

    c = myDisplayGetClientFromWindow (display_info, ev->window, FRAME);
    if (c)
    {
        screen_info = c->screen_info;
        
        if (!(screen_info->params->click_to_focus) && clientAcceptFocus (c))
        {
            TRACE ("EnterNotify window is \"%s\"", c->name);
            if (!(c->type & (WINDOW_DOCK | WINDOW_DESKTOP)))
            {
                clientSetFocus (c->screen_info, c, ev->time, NO_FOCUS_FLAG);
            }
        }
        
        /* No need to process the event any further */
        return;
    }
    
    /* The event was not for a client window */

    if (display_info->nb_screens > 1)
    {
        /* Wrap workspace/wrap windows is disabled with multiscreen */
        return;
    }
    
    /* Get the screen structure from the root of the event */
    screen_info = myDisplayGetScreenFromRoot (display_info, ev->root);

    if (!screen_info)
    {
        return;
    }
    
    if (screen_info->workspace_count && screen_info->params->wrap_workspaces
        && screen_info->params->wrap_resistance)
    {
        int msx, msy, maxx, maxy;
        int rx, ry;

        msx = ev->x_root;
        msy = ev->y_root;
        maxx = gdk_screen_get_width (screen_info->gscr) - 1;
        maxy = gdk_screen_get_height (screen_info->gscr) - 1;
        rx = 0;
        ry = 0;
        warp_pointer = FALSE;

        if ((msx == 0) || (msx == maxx))
        {
            if ((ev->time - lastresist) > 250)  /* ms */
            {
                edge_scroll_x = 0;
            }
            else
            {
                edge_scroll_x++;
            }
            if (msx == 0) 
            {
                rx = 1;
            }
            else
            {
                rx = -1;
            }
            warp_pointer = TRUE;
            lastresist = ev->time;
        }
        if ((msy == 0) || (msy == maxy))
        {
            if ((ev->time - lastresist) > 250)  /* ms */
            {
                edge_scroll_y = 0;
            }
            else
            {
                edge_scroll_y++;
            }
            if (msy == 0) 
            {
                ry = 1;
            }
            else
            {
                ry = -1;
            }
            warp_pointer = TRUE;
            lastresist = ev->time;
        }

        if (edge_scroll_x > screen_info->params->wrap_resistance)
        {
            edge_scroll_x = 0;
            if (msx == 0)
            {
                if (workspaceMove (screen_info, 0, -1, NULL))
                {
                    rx = 4 * maxx / 5;
                }
            }
            else
            {
                if (workspaceMove (screen_info, 0, 1, NULL))
                {
                    rx = -4 * maxx / 5;
                }
            }
            warp_pointer = TRUE;
        }
        if (edge_scroll_y > screen_info->params->wrap_resistance)
        {
            edge_scroll_y = 0;
            if (msy == 0)
            {
                if (workspaceMove (screen_info, -1, 0, NULL))
                {
                    ry = 4 * maxy / 5;
                }
            }
            else
            {
                if (workspaceMove (screen_info, 1, 0, NULL))
                {
                    ry = -4 * maxy / 5;
                }
            }
            warp_pointer = TRUE;
        }
        if (warp_pointer)
        {
            XWarpPointer (display_info->dpy, None, None, 0, 0, 0, 0, rx, ry);
            XFlush (display_info->dpy);
        }
    }
}

static void
handleLeaveNotify (DisplayInfo *display_info, XCrossingEvent * ev)
{
    TRACE ("entering handleLeaveNotify");
}

static void
handleFocusIn (DisplayInfo *display_info, XFocusChangeEvent * ev)
{
    ScreenInfo *screen_info = NULL;
    Client *c = NULL;
    Client *last_raised = NULL;
        

    TRACE ("entering handleFocusIn");
    TRACE ("handleFocusIn (0x%lx) mode = %s",
                ev->window,
                (ev->mode == NotifyNormal) ?
                "NotifyNormal" :
                (ev->mode == NotifyWhileGrabbed) ?
                "NotifyWhileGrabbed" :
                "(unknown)");
    TRACE ("handleFocusIn (0x%lx) detail = %s",
                ev->window,
                (ev->detail == NotifyAncestor) ?
                "NotifyAncestor" :
                (ev->detail == NotifyVirtual) ?
                "NotifyVirtual" :
                (ev->detail == NotifyInferior) ?
                "NotifyInferior" :
                (ev->detail == NotifyNonlinear) ?
                "NotifyNonlinear" :
                (ev->detail == NotifyNonlinearVirtual) ?
                "NotifyNonlinearVirtual" :
                (ev->detail == NotifyPointer) ?
                "NotifyPointer" :
                (ev->detail == NotifyPointerRoot) ?
                "NotifyPointerRoot" :
                (ev->detail == NotifyDetailNone) ?
                "NotifyDetailNone" :
                "(unknown)");

    screen_info = myDisplayGetScreenFromWindow (display_info, ev->window);
    if (screen_info && (ev->window == screen_info->xroot) && (ev->mode == NotifyNormal) && 
        (ev->detail == NotifyDetailNone))
    {
        /* Handle focus transition to root (means that an unknown
           window has vanished and the focus is returned to the root
         */
        c = clientGetFocus ();
        if (c)
        {
            clientSetFocus (c->screen_info, c, myDisplayGetCurrentTime (display_info), FOCUS_FORCE);
        }
        return;
    }
    
    if ((ev->mode == NotifyGrab) || (ev->mode == NotifyUngrab) ||
             (ev->detail > NotifyNonlinearVirtual))
    {
        /* We're not interested in such notifications */
        return;
    }

    c = myDisplayGetClientFromWindow (display_info, ev->window, WINDOW);
    TRACE ("FocusIn on window (0x%lx)", ev->window);
    if (c)
    {
        TRACE ("focus set to \"%s\" (0x%lx)", c->name, c->window);
        screen_info = c->screen_info;
        clientUpdateFocus (screen_info, c, FOCUS_SORT);
        last_raised = clientGetLastRaise (screen_info);
        if ((screen_info->params->click_to_focus) && 
            (screen_info->params->raise_on_click) && 
            (last_raised != NULL) && (c != last_raised))
        {
            clientRaise (c, None);
        }
        if (screen_info->params->raise_on_focus)
        {
            reset_timeout (screen_info);
        }
    }
}

static void
handleFocusOut (DisplayInfo *display_info, XFocusChangeEvent * ev)
{
    Client *c = NULL;
    
    TRACE ("entering handleFocusOut");
    TRACE ("handleFocusOut (0x%lx) mode = %s",
                ev->window,
                (ev->mode == NotifyNormal) ?
                "NotifyNormal" :
                (ev->mode == NotifyWhileGrabbed) ?
                "NotifyWhileGrabbed" :
                "(unknown)");
    TRACE ("handleFocusOut (0x%lx) detail = %s",
                ev->window,
                (ev->detail == NotifyAncestor) ?
                "NotifyAncestor" :
                (ev->detail == NotifyVirtual) ?
                "NotifyVirtual" :
                (ev->detail == NotifyInferior) ?
                "NotifyInferior" :
                (ev->detail == NotifyNonlinear) ?
                "NotifyNonlinear" :
                (ev->detail == NotifyNonlinearVirtual) ?
                "NotifyNonlinearVirtual" :
                (ev->detail == NotifyPointer) ?
                "NotifyPointer" :
                (ev->detail == NotifyPointerRoot) ?
                "NotifyPointerRoot" :
                (ev->detail == NotifyDetailNone) ?
                "NotifyDetailNone" :
                "(unknown)");
    if ((ev->mode == NotifyNormal)
        && ((ev->detail == NotifyNonlinear) 
            || (ev->detail == NotifyNonlinearVirtual)))
    {
        c = myDisplayGetClientFromWindow (display_info, ev->window, WINDOW);
        TRACE ("FocusOut on window (0x%lx)", ev->window);
        if ((c) && (c == clientGetFocus ()))
        {
            TRACE ("focus lost from \"%s\" (0x%lx)", c->name, c->window);
            clientPassGrabMouseButton (NULL);
            clientUpdateFocus (c->screen_info, NULL, NO_FOCUS_FLAG);
            /* Clear timeout */
            clear_timeout ();
        }
    }
}

static void
handlePropertyNotify (DisplayInfo *display_info, XPropertyEvent * ev)
{
    ScreenInfo *screen_info = NULL;
    Client *c = NULL;

    TRACE ("entering handlePropertyNotify");

    c = myDisplayGetClientFromWindow (display_info, ev->window, WINDOW);
    if (c)
    {
        screen_info = c->screen_info;
        if (ev->atom == XA_WM_NORMAL_HINTS)
        {
            TRACE ("client \"%s\" (0x%lx) has received a XA_WM_NORMAL_HINTS notify", c->name, c->window);
            clientGetWMNormalHints (c, TRUE);
        }
        else if ((ev->atom == XA_WM_NAME) || 
                 (ev->atom == display_info->atoms[NET_WM_NAME]) || 
                 (ev->atom == display_info->atoms[WM_CLIENT_MACHINE]))
        {
            TRACE ("client \"%s\" (0x%lx) has received a XA_WM_NAME/NET_WM_NAME/WM_CLIENT_MACHINE notify", c->name, c->window);
            if (c->name)
            {
                g_free (c->name);
            }
            getWindowName (display_info, c->window, &c->name);
            FLAG_SET (c->flags, CLIENT_FLAG_NAME_CHANGED);
            frameDraw (c, TRUE, FALSE);
        }
        else if (ev->atom == display_info->atoms[MOTIF_WM_HINTS])
        {
            TRACE ("client \"%s\" (0x%lx) has received a motif_wm_hints notify", c->name, c->window);
            clientGetMWMHints (c, TRUE);
        }
        else if (ev->atom == XA_WM_HINTS)
        {
            TRACE ("client \"%s\" (0x%lx) has received a XA_WM_HINTS notify", c->name, c->window);
            c->wmhints = XGetWMHints (display_info->dpy, c->window);
            if (c->wmhints)
            {
                if (c->wmhints->flags & WindowGroupHint)
                {
                    c->group_leader = c->wmhints->window_group;
                }
                if ((c->wmhints->flags & IconPixmapHint) && (screen_info->params->show_app_icon))
                {
                    clientUpdateIcon (c);
                    frameDraw (c, TRUE, FALSE);
                }
            }
            clientUpdateUrgency (c);
        }
        else if (ev->atom == display_info->atoms[WM_PROTOCOLS])
        {
            TRACE ("client \"%s\" (0x%lx) has received a wm_protocols notify", c->name, c->window);
            clientGetWMProtocols (c);
        }
        else if (ev->atom == display_info->atoms[WM_TRANSIENT_FOR])
        {
            Window w;

            TRACE ("client \"%s\" (0x%lx) has received a wm_transient_for notify", c->name, c->window);
            getTransientFor (display_info, c->screen_info->xroot, c->window, &w);
            if (clientCheckTransientWindow (c, w))
            {
                c->transient_for = w;
                clientRaise (c, w);
            }
        }
        else if (ev->atom == display_info->atoms[WIN_HINTS])
        {
            TRACE ("client \"%s\" (0x%lx) has received a win_hints notify", c->name, c->window);
            getHint (display_info, c->window, WIN_HINTS, (long *) &c->win_hints);
        }
        else if (ev->atom == display_info->atoms[NET_WM_WINDOW_TYPE])
        {
            TRACE ("client \"%s\" (0x%lx) has received a net_wm_window_type notify", c->name, c->window);
            clientGetNetWmType (c);
            frameDraw (c, TRUE, FALSE);
        }
        else if ((ev->atom == display_info->atoms[NET_WM_STRUT]) || 
                 (ev->atom == display_info->atoms[NET_WM_STRUT_PARTIAL]))
        {
            TRACE ("client \"%s\" (0x%lx) has received a net_wm_strut notify", c->name, c->window);
            clientGetNetStruts (c);
        }
        else if (ev->atom == display_info->atoms[WM_COLORMAP_WINDOWS])
        {
            TRACE ("client \"%s\" (0x%lx) has received a wm_colormap_windows notify", c->name, c->window);
            clientUpdateColormaps (c);
            if (c == clientGetFocus ())
            {
                clientInstallColormaps (c);
            }
        }
        else if (ev->atom == display_info->atoms[NET_WM_USER_TIME])
        {
            TRACE ("client \"%s\" (0x%lx) has received a net_wm_user_time notify", c->name, c->window);
            if (getNetWMUserTime (display_info, c->window, &c->user_time))
            {
                FLAG_SET (c->flags, CLIENT_FLAG_HAS_USER_TIME);
            }
        }
        else if (ev->atom == display_info->atoms[NET_WM_WINDOW_OPACITY])
        {
            TRACE ("client \"%s\" (0x%lx) has received a net_wm_opacity notify", c->name, c->window);
            if (!getOpacity (display_info, c->window, &c->opacity))
            {
                c->opacity =  NET_WM_OPAQUE;
            }
            compositorWindowSetOpacity (display_info, c->frame, c->opacity);
        }
        else if ((screen_info->params->show_app_icon) &&
                 ((ev->atom == display_info->atoms[NET_WM_ICON]) ||
                  (ev->atom == display_info->atoms[KWM_WIN_ICON])))
        {
            clientUpdateIcon (c);
            frameDraw (c, TRUE, FALSE);
        }
#ifdef HAVE_STARTUP_NOTIFICATION
        else if (ev->atom == display_info->atoms[NET_STARTUP_ID])
        {
            if (c->startup_id)
            {
                g_free (c->startup_id);
                c->startup_id = NULL;
            }
            getWindowStartupId (display_info, c->window, &c->startup_id);
        }
#endif
        return;
    }
    
    screen_info = myDisplayGetScreenFromWindow (display_info, ev->window);
    if (!screen_info)
    {
        return;
    }

    if (ev->atom == display_info->atoms[NET_DESKTOP_NAMES])
    {
        gchar **names;
        int items;

        TRACE ("root has received a net_desktop_names notify");
        if (getUTF8StringList (display_info, screen_info->xroot, NET_DESKTOP_NAMES, &names, &items))
        {
            workspaceSetNames (screen_info, names, items);
        }
    }
    else if (ev->atom == display_info->atoms[GNOME_PANEL_DESKTOP_AREA])
    {
        TRACE ("root has received a gnome_panel_desktop_area notify");
        getGnomeDesktopMargins (display_info, screen_info->xroot, screen_info->gnome_margins);
        workspaceUpdateArea (screen_info);
    }
    else if (ev->atom == display_info->atoms[NET_DESKTOP_LAYOUT])
    {
        TRACE ("root has received a net_desktop_layout notify");
        getDesktopLayout(display_info, screen_info->xroot, screen_info->workspace_count, &screen_info->desktop_layout);
        placeSidewalks(screen_info, screen_info->params->wrap_workspaces);
    }
}

static void
handleClientMessage (DisplayInfo *display_info, XClientMessageEvent * ev)
{
    ScreenInfo *screen_info = NULL;
    Client *c = NULL;
    gboolean is_transient = FALSE;

    TRACE ("entering handleClientMessage");

    c = myDisplayGetClientFromWindow (display_info, ev->window, WINDOW);
    if (c)
    {
        screen_info = c->screen_info;
        is_transient = clientIsValidTransientOrModal (c);
        
        if ((ev->message_type == display_info->atoms[WM_CHANGE_STATE]) && (ev->format == 32) && (ev->data.l[0] == IconicState))
        {
            TRACE ("client \"%s\" (0x%lx) has received a wm_change_state event", c->name, c->window);
            if (!FLAG_TEST (c->flags, CLIENT_FLAG_ICONIFIED) &&  CLIENT_CAN_HIDE_WINDOW (c))
            {
                clientHide (c, c->win_workspace, TRUE);
            }
        }
        else if ((ev->message_type == display_info->atoms[WIN_STATE]) && (ev->format == 32))
        {
            TRACE ("client \"%s\" (0x%lx) has received a win_state event", c->name, c->window);
            clientUpdateWinState (c, ev);
        }
        else if ((ev->message_type == display_info->atoms[WIN_LAYER]) && (ev->format == 32))
        {
            TRACE ("client \"%s\" (0x%lx) has received a win_layer event", c->name, c->window);
            if ((ev->data.l[0] != c->win_layer) && !is_transient)
            {
                clientSetLayer (c, ev->data.l[0]);
            }
        }
        else if ((ev->message_type == display_info->atoms[WIN_WORKSPACE]) && (ev->format == 32))
        {
            TRACE ("client \"%s\" (0x%lx) has received a win_workspace event", c->name, c->window);
            if ((ev->data.l[0] != c->win_workspace) && !is_transient)
            {
                clientSetWorkspace (c, ev->data.l[0], TRUE);
            }
        }
        else if ((ev->message_type == display_info->atoms[NET_WM_DESKTOP]) && (ev->format == 32))
        {
            TRACE ("client \"%s\" (0x%lx) has received a net_wm_desktop event", c->name, c->window);
            if (!is_transient)
            {
                if (ev->data.l[0] == ALL_WORKSPACES)
                {
                    if (FLAG_TEST (c->xfwm_flags, XFWM_FLAG_HAS_STICK) && !FLAG_TEST (c->flags, CLIENT_FLAG_STICKY))
                    {
                        clientStick (c, TRUE);
                        frameDraw (c, FALSE, FALSE);
                    }
                }
                else
                {
                    if (FLAG_TEST (c->xfwm_flags, XFWM_FLAG_HAS_STICK) && FLAG_TEST (c->flags, CLIENT_FLAG_STICKY))
                    {
                        clientUnstick (c, TRUE);
                        frameDraw (c, FALSE, FALSE);
                    }
                    if (ev->data.l[0] != c->win_workspace)
                    {
                        clientSetWorkspace (c, ev->data.l[0], TRUE);
                    }
                }
            }
        }
        else if ((ev->message_type == display_info->atoms[NET_CLOSE_WINDOW]) && (ev->format == 32))
        {
            TRACE ("client \"%s\" (0x%lx) has received a net_close_window event", c->name, c->window);
            clientClose (c);
        }
        else if ((ev->message_type == display_info->atoms[NET_WM_STATE]) && (ev->format == 32))
        {
            TRACE ("client \"%s\" (0x%lx) has received a net_wm_state event", c->name, c->window);
            clientUpdateNetState (c, ev);
        }
        else if ((ev->message_type == display_info->atoms[NET_WM_MOVERESIZE]) && (ev->format == 32))
        {
            TRACE ("client \"%s\" (0x%lx) has received a net_wm_moveresize event", c->name, c->window);
            g_warning ("Operation not supported (yet)");
            /* TBD */
        }
        else if ((ev->message_type == display_info->atoms[NET_ACTIVE_WINDOW]) && (ev->format == 32))
        {
            TRACE ("client \"%s\" (0x%lx) has received a net_active_window event", c->name, c->window);
            if (ev->data.l[0] != 0)
            {
                Time current = myDisplayGetCurrentTime (screen_info->display_info);
                Time ev_time = (Time) ev->data.l[1];

                /* We are simply ignoring XServer time wraparound here */
                TRACE ("Time of event received is %u, current XServer time is %u", (unsigned int) ev_time, (unsigned int) current);
                if ((ev_time != (Time) 0) && (ev_time < current))
                {
                    FLAG_SET (c->flags, CLIENT_FLAG_DEMANDS_ATTENTION);
                    clientSetNetState (c);
                }
                else
                {
                    clientSetWorkspace (c, screen_info->current_ws, TRUE);
                    clientShow (c, TRUE);
                    clientClearAllShowDesktop (screen_info);
                    clientRaise (c, None);
                    clientSetFocus (screen_info, c, (Time) ev_time, NO_FOCUS_FLAG);
                }
            }
            else
            {
                clientSetWorkspace (c, screen_info->current_ws, TRUE);
                clientShow (c, TRUE);
                clientClearAllShowDesktop (screen_info);
                clientRaise (c, None);
                clientSetFocus (screen_info, c, CurrentTime, NO_FOCUS_FLAG);
            }
        }
        else if (ev->message_type == display_info->atoms[NET_REQUEST_FRAME_EXTENTS])
        {
            TRACE ("client \"%s\" (0x%lx) has received a net_request_frame_extents event", c->name, c->window);
            setNetFrameExtents (display_info, c->window, frameTop (c), frameLeft (c),
                                                         frameRight (c), frameBottom (c)); 
        }
    }
    else
    {
        screen_info = myDisplayGetScreenFromWindow (display_info, ev->window);
        if (!screen_info)
        {
            return;
        }
        
        if (((ev->message_type == display_info->atoms[WIN_WORKSPACE]) || 
             (ev->message_type == display_info->atoms[NET_CURRENT_DESKTOP])) && (ev->format == 32))