Add mutter-mock dbus mock

Just enough to make gsd-power start up

README.md

@@ -26,9 +26,6 @@ using:
 
     _build/run
 
-If you want to test interaction with gnome-settings-daemon e.g. for brightness
-start a session like:
-
-    gnome-session --session=gnome-dummy --disable-acceleration-check &
-
-before running phosh.
+This will make sure the gsettings schema is found, there's enough of a GNOME
+session running an the some of the mutter DBus API is stubbed so
+gnome-settings-manager can work.

helpers/mutter-dbus-stub-mock.py

+#!/usr/bin/env python2
+
+import dbus
+import dbus.service
+import dbus.mainloop.glib
+
+import gobject
+
+class Service(dbus.service.Object):
+    connector = 'HDMI-1'
+    resources = (1,     # serial
+                 [      # crtc
+                    [ 
+                       0,    # serial
+                       0,    # winsys_id
+                       0, 0, 768, 1024,  # x, y, width, height
+                       0,                # current mode
+                       0,                # current transform (according to wayland proto
+                       [0],              # all possible transforms
+                       {},
+                    ],
+                 ],
+                 [                 # outputs
+                    [
+                       0,          # serial
+                       0,          # winsys_id
+                       0,          # current_crtc
+                       [0],        # possible_crtcs
+                       connector,  # connector
+                       [1],        # valid modes
+                       [1],        # valid clones
+                       {'vendor': 'puri.sm'},  # properties
+                    ],
+                 ],
+                 [                 # modes
+                    [
+                       0,          # serial
+                       0,          # XID
+                       768, 1024,  # width, height
+                       60,         # frequency
+                       0,          # flags
+                    ],
+                 ],
+                 768,              # max_width
+                 10240,            # max_height
+    )
+
+    def run(self):
+        dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
+        bus_name = dbus.service.BusName("org.gnome.Mutter.DisplayConfig", dbus.SessionBus())
+        dbus.service.Object.__init__(self, bus_name, "/org/gnome/Mutter/DisplayConfig")
+
+        self._loop = gobject.MainLoop()
+        print("Mocking mutter DisplayConfig DBus API")
+        self._loop.run()
+
+    @dbus.service.method("org.gnome.Mutter.DisplayConfig",
+                         in_signature='',
+                         out_signature='ua(uxiiiiiuaua{sv})a(uxiausauaua{sv})a(uxuudu)ii')
+    def GetResources(self):
+        print("GetResouces called")
+        return self.resources
+
+    @dbus.service.method("org.freedesktop.DBus.Properties", in_signature='ssv', out_signature='')
+    def Set(self, s1, s2, v):
+        print("Set called with %s %s" % (s1, s2))
+        return
+
+
+if __name__ == "__main__":
+    Service("This is the service").run()

helpers/set_brightness

+#!/bin/bash
+
+B=${1:-100}
+
+dbus-send --session --type=method_call \
+  --dest="org.gnome.SettingsDaemon.Power" \
+  /org/gnome/SettingsDaemon/Power \
+  org.freedesktop.DBus.Properties.Set \
+  string:"org.gnome.SettingsDaemon.Power.Screen" \
+  string:"Brightness" \
+  variant:int32:${B}

run.in

 #!/bin/sh
 
+set -e
+
 ABS_BUILDDIR='@ABS_BUILDDIR@'
 
+
 # Start up gsd, etc.
+if ! dbus-send --session --dest=org.freedesktop.DBus \
+	     --type=method_call --print-reply /org/freedesktop/DBus \
+	     org.freedesktop.DBus.ListNames \
+   | grep -qs '[o]rg\.gnome.Mutter\.DisplayConfig'; then
+   helpers/mutter-dbus-stub-mock.py &
+fi
 gnome-session --session=gnome-dummy --disable-acceleration-check &
 
 export GSETTINGS_SCHEMA_DIR="${ABS_BUILDDIR}/data"