From d6ebfcbb4d93610bf30df517fcd5360fdd083b50 Mon Sep 17 00:00:00 2001
From: Tomeu Vizoso <tomeu.vizoso@collabora.co.uk>
Date: Wed, 02 Jun 2010 13:00:53 +0000
Subject: Set the DISPLAY env var once Xephyr has been launched #1860

Otherwise when we retry to run Xephyr, it runs under the wrong
DISPLAY var and would always fall.
---
diff --git a/src/jarabe/util/emulator.py b/src/jarabe/util/emulator.py
index d9dca7f..5a99dbe 100644
--- a/src/jarabe/util/emulator.py
+++ b/src/jarabe/util/emulator.py
@@ -71,8 +71,6 @@ def _run_xephyr(display, dpi, dimensions, fullscreen):
         sys.stderr.write('Error executing server: %s\n' % (exc, ))
         return None
 
-    os.environ['DISPLAY'] = ":%d" % (display)
-    os.environ['SUGAR_EMULATOR_PID'] = str(pipe.pid)
     return pipe
 
 
@@ -98,17 +96,17 @@ def _start_xephyr(dpi, dimensions, fullscreen):
         if not _check_server(display):
             pipe = _run_xephyr(display, dpi, dimensions, fullscreen)
             if pipe is None:
-                return None
+                return None, None
 
             for i_ in range(10):
                 if _check_server(display):
-                    return pipe
+                    return pipe, display
 
                 time.sleep(0.1)
 
             _kill_pipe(pipe)
 
-    return None
+    return None, None
 
 
 def _start_window_manager():
@@ -118,7 +116,7 @@ def _start_window_manager():
 
     gobject.spawn_async(cmd, flags=gobject.SPAWN_SEARCH_PATH)
 
-def _setup_env():
+def _setup_env(display, scaling, emulator_pid):
     os.environ['SUGAR_EMULATOR'] = 'yes'
     os.environ['GABBLE_LOGFILE'] = os.path.join(
             env.get_profile_path(), 'logs', 'telepathy-gabble.log')
@@ -126,7 +124,11 @@ def _setup_env():
             env.get_profile_path(), 'logs', 'telepathy-salut.log')
     os.environ['STREAM_ENGINE_LOGFILE'] = os.path.join(
             env.get_profile_path(), 'logs', 'telepathy-stream-engine.log')
+    os.environ['DISPLAY'] = ":%d" % (display)
+    os.environ['SUGAR_EMULATOR_PID'] = emulator_pid
 
+    if scaling:
+        os.environ['SUGAR_SCALING'] = scaling
 
 def main():
     """Script-level operations"""
@@ -150,16 +152,14 @@ def main():
         sys.stderr.write('DISPLAY not set, cannot connect to host X server.\n')
         return ERROR_NO_DISPLAY
 
-    _setup_env()
-
-    server = _start_xephyr(options.dpi, options.dimensions, options.fullscreen)
+    server, display = _start_xephyr(options.dpi, options.dimensions,
+                                    options.fullscreen)
     if server is None:
         sys.stderr.write('Failed to start server. Please check output above'
             ' for any error message.\n')
         return ERROR_NO_SERVER
 
-    if options.scaling:
-        os.environ['SUGAR_SCALING'] = options.scaling
+    _setup_env(display, options.scaling, str(server.pid))
 
     command = ['dbus-launch', '--exit-with-session']
 
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