use CurrentTime constant

[chaz/openbox] / openbox / grab.c

diff --git a/openbox/grab.c b/openbox/grab.c
index b4c192b0bfdde8151271fdf9b50d136fe8aa3661..e92722a6a48e1c0daab0cca054ea9f292bac0fa7 100644 (file)
--- a/openbox/grab.c
+++ b/openbox/grab.c
@@ -35,6 +35,24 @@
 static guint mask_list[MASK_LIST_SIZE];
 static guint kgrabs = 0;
 static guint pgrabs = 0;
+/*! The time at which the last grab was made */
+static Time  grab_time = CurrentTime;
+
+static Time ungrab_time()
+{
+    Time t = event_curtime;
+    if (!(t == CurrentTime || event_time_after(t, grab_time)))
+        /* When the time moves backward on the server, then we can't use
+           the grab time because that will be in the future. So instead we
+           have to use CurrentTime.
+
+           "XUngrabPointer does not release the pointer if the specified time
+           is earlier than the last-pointer-grab time or is later than the
+           current X server time."
+        */
+        t = CurrentTime; /*grab_time;*/
+    return t;
+}
 
 gboolean grab_on_keyboard()
 {
@@ -54,14 +72,17 @@ gboolean grab_keyboard(gboolean grab)
         if (kgrabs++ == 0) {
             ret = XGrabKeyboard(ob_display, RootWindow(ob_display, ob_screen),
                                 FALSE, GrabModeAsync, GrabModeAsync,
-                                event_lasttime) == Success;
+                                event_curtime) == Success;
             if (!ret)
                 --kgrabs;
+            else
+                grab_time = event_curtime;
         } else
             ret = TRUE;
     } else if (kgrabs > 0) {
-        if (--kgrabs == 0)
-            XUngrabKeyboard(ob_display, event_lasttime);
+        if (--kgrabs == 0) {
+            XUngrabKeyboard(ob_display, ungrab_time());
+        }
         ret = TRUE;
     }
 
@@ -77,14 +98,16 @@ gboolean grab_pointer(gboolean grab, ObCursor cur)
             ret = XGrabPointer(ob_display, screen_support_win,
                                False, GRAB_PTR_MASK, GrabModeAsync,
                                GrabModeAsync, None,
-                               ob_cursor(cur), event_lasttime) == Success;
+                               ob_cursor(cur), event_curtime) == Success;
             if (!ret)
                 --pgrabs;
+            else
+                grab_time = event_curtime;
         } else
             ret = TRUE;
     } else if (pgrabs > 0) {
         if (--pgrabs == 0) {
-            XUngrabPointer(ob_display, event_lasttime);
+            XUngrabPointer(ob_display, ungrab_time());
         }
         ret = TRUE;
     }
@@ -100,14 +123,16 @@ gboolean grab_pointer_window(gboolean grab, ObCursor cur, Window win)
             ret = XGrabPointer(ob_display, win, False, GRAB_PTR_MASK,
                                GrabModeAsync, GrabModeAsync, None,
                                ob_cursor(cur),
-                               event_lasttime) == Success;
+                               event_curtime) == Success;
             if (!ret)
                 --pgrabs;
+            else
+                grab_time = event_curtime;
         } else
             ret = TRUE;
     } else if (pgrabs > 0) {
         if (--pgrabs == 0) {
-            XUngrabPointer(ob_display, event_lasttime);
+            XUngrabPointer(ob_display, ungrab_time());
         }
         ret = TRUE;
     }