expose current shadow pointer position to clients - can be disabled w…

…ith XPRA_POLL_POINTER=0

git-svn-id: https://xpra.org/svn/Xpra/trunk@15562 3bb7dfac-3a0b-4e04-842a-767bc560f471

src/xpra/server/shadow/gtk_shadow_server_base.py

@@ -8,10 +8,14 @@
 
 from xpra.log import Logger
 traylog = Logger("tray")
+mouselog = Logger("mouse")
 
+from xpra.util import envbool
 from xpra.server.gtk_server_base import GTKServerBase
 from xpra.server.shadow.shadow_server_base import ShadowServerBase
 
+POLL_POINTER = envbool("XPRA_POLL_POINTER", True)
+
 
 class GTKShadowServerBase(ShadowServerBase, GTKServerBase):
 
@@ -25,6 +29,12 @@ def __init__(self):
         self.tray_widget = None
         self.tray = False
         self.tray_icon = None
+        #the pointer position timer:
+        self.last_pointer_position = None
+        self.pointer_position_timer = None
+        if POLL_POINTER:
+            self.pointer_position_timer = self.timeout_add(20, self.poll_pointer_position)
+
 
     def init(self, opts):
         GTKServerBase.init(self, opts)
@@ -39,6 +49,10 @@ def cleanup(self):
         if tw:
             self.tray_widget = None
             tw.cleanup()
+        ppt = self.pointer_position_timer
+        if ppt:
+            self.pointer_position_timer = None
+            self.source_remove(ppt)
         GTKServerBase.cleanup(self)
 
 
@@ -55,6 +69,20 @@ def last_client_exited(self):
         GTKServerBase.last_client_exited(self)
 
 
+    def poll_pointer_position(self):
+        wid = self._window_to_id.get(self.root_window_model)
+        if not wid:
+            self.pointer_position_timer = None
+            return False
+        x, y, _ = self.root.get_pointer()
+        mouselog("poll_pointer_position() wid=%i, position=%s", wid, (x, y))
+        if self.last_pointer_position!=(x, y):
+            self.last_pointer_position = (x, y)
+            for ss in self._server_sources.values():
+                ss.update_mouse(wid, x, y, x, y)
+        return True
+
+
     ############################################################################
     # system tray methods, mostly copied from the gtk client...
     # (most of these should probably be moved to a common location instead)