#139: add pointer grab with "Menu" key shortcut

git-svn-id: https://xpra.org/svn/Xpra/trunk@13144 3bb7dfac-3a0b-4e04-842a-767bc560f471

src/xpra/client/gtk2/gtk2_window_base.py

@@ -135,12 +135,14 @@ def recheck_focus(self):
         if not focused:
             #we should never own the grab if we don't have focus
             self.keyboard_ungrab()
-            return            
+            self.pointer_ungrab()
+            return
         if hasfocus==self._focus_latest:
             #we're already up to date
             return
         if not self._focus_latest:
             self.keyboard_ungrab()
+            self.pointer_ungrab()
             self._client.update_focus(self._id, False)
         else:
             self._client.update_focus(self._id, True)

src/xpra/client/gtk_base/gtk_client_window_base.py

@@ -798,6 +798,29 @@ def toggle_keyboard_grab(self):
         else:
             self.keyboard_grab()
 
+    def pointer_grab(self, *args):
+        self._client.pointer_grabbed = True
+        r = gdk.pointer_grab(self.get_window(), True, confine_to=self.get_window())
+        self._client.pointer_grabbed = r==GRAB_SUCCESS
+        grablog("pointer_grab%s gdk.pointer_grab(%s, True)=%s, pointer_grabbed=%s", args, self.get_window(), GRAB_STATUS_STRING.get(r), self._client.pointer_grabbed)
+
+    def pointer_ungrab(self, *args):
+        grablog("pointer_ungrab%s", args)
+        self._client.pointer_grabbed = False
+        gdkwin = self.get_window()
+        if gdkwin:
+            d = gdkwin.get_display()
+            if d:
+                d.pointer_ungrab()
+        return True
+
+    def toggle_pointer_grab(self):
+        grablog("toggle_pointer_grab()")
+        if self._client.pointer_grabbed:
+            self.pointer_ungrab()
+        else:
+            self.pointer_grab()
+
 
     def set_menu(self, menu):
         menulog("set_menu(%s)", menu)

src/xpra/client/ui_client_base.py

@@ -286,6 +286,7 @@ def __init__(self):
         self.client_extras = None
         self.keyboard_helper = None
         self.keyboard_grabbed = False
+        self.pointer_grabbed = False
         self.kh_warning = False
         self.clipboard_helper = None
         self.menu_helper = None

src/xpra/scripts/config.py

@@ -433,6 +433,7 @@ def read_xpra_defaults():
 def get_default_key_shortcuts():
     return [shortcut for e,shortcut in [
                (True,   "Control_R:toggle_keyboard_grab"),
+               (True,   "Menu:toggle_pointer_grab"),
                (True,   "Meta+Shift+F1:show_menu"),
                (True,   "Meta+Shift+F2:show_start_new_command"),
                (True,   "Meta+Shift+F3:show_bug_report"),