Added KDE3 version of KDE Guidance utilities

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/kde-guidance@1102646 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 147 insertions, 0 deletions

diff --git a/powermanager/gpmhelper.py b/powermanager/gpmhelper.py
new file mode 100644
index 0000000..65094f7
--- /dev/null
+++ b/powermanager/gpmhelper.py
@@ -0,0 +1,147 @@
+#!/usr/bin/python
+# -*- coding: UTF-8 -*-
+"""
+Copyright 2008 Sebastian Kügler, Canonical Ltd, Luka Renko
+
+Authors: 
+    Andreas Wenning <awen@awen.dk>
+
+This program is free software; you can redistribute it and/or modify 
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+"""
+
+"""
+A frontend to HAL's power features for KDE - Helper application
+This application listens for HAL signals and issues dcop-calls to the
+kde-power-manager that originally started it. To avoid the need for
+kde-power-manager to shut it's helper down, this application
+will automatically shut down if it's kde-power-manager isn't running.
+"""
+
+import dbus, sys, time
+from dbus.mainloop.glib import DBusGMainLoop
+import gobject
+from dcopext import DCOPClient, DCOPObj, DCOPApp
+
+class GPMHelper():
+    def mother_alive(self):
+        """Check that our mother is still alive"""
+        found = False
+        for name in self.dcop.registeredApplications():
+            name = str(name)
+            if name == self.motherName:
+                found = True
+        if not found:
+            """No mother; commit suicide"""
+            print "guidance-power-manager not alive; exiting"
+            loop.quit()
+
+    """Called when signal is received"""
+    def signal_recv(self, *args):
+        if args[0] == "ButtonPressed":
+            if args[1] == "brightness-up":
+                if time.time()-0.02 <= self.last_brightness_up <= time.time():
+                    """Most likely an extra brightness-up call, discarding"""
+                    print "Extra brightness-up call discarded"
+                    return
+                try:
+                    ok, foo = self.mother.brightnessUp()
+                    if not ok:
+                        print "brightnessUp-call failed"
+                        return self.mother_alive()
+                    self.last_brightness_up = time.time()
+                except:
+                    print "brightnessUp-call failed"
+                    return self.mother_alive()
+            elif args[1] == "brightness-down":
+                if time.time()-0.02 <= self.last_brightness_down <= time.time():
+                    """Most likely an extra brightness-down call, discarding"""
+                    print "Extra brightness-down call discarded"
+                    return
+                try:
+                    ok, foo = self.mother.brightnessDown()
+                    if not ok:
+                        print "brightnessDown-call failed"
+                        return self.mother_alive()
+                    self.last_brightness_down = time.time()
+                except:
+                    print "brightnessDown-call failed"
+                    return self.mother_alive()
+            elif args[1] == "sleep":
+                if time.time()-1 <= self.last_sleep <= time.time():
+                    """Most likely an extra sleep-call, discarding"""
+                    print "Extra sleep-call discarded"
+                    return
+                try:
+                    ok, foo = self.mother.suspend()
+                    if not ok:
+                        print "suspend-call failed"
+                        return self.mother_alive()
+                    self.last_sleep = time.time()
+                except:
+                    print "suspend-call failed"
+                    return self.mother_alive()
+            elif args[1] == "hibernate":
+                if time.time()-1 <= self.last_hibernate <= time.time():
+                    """Most likely an extra hibernate-call, discarding"""
+                    print "Extra hibernate-call discarded"
+                    return
+                try:
+                    ok, foo = self.mother.hibernate()
+                    if not ok:
+                        print "hibernate-call failed"
+                        return self.mother_alive()
+                    self.last_hibernate = time.time()
+                except:
+                    print "hibernate failed"
+                    return self.mother_alive()
+
+    def __init__(self):
+        """Connect to HAL"""
+        self.dbus_loop = DBusGMainLoop(set_as_default=True)
+        self.bus = dbus.SystemBus(mainloop=self.dbus_loop)
+        hal_manager_obj = self.bus.get_object("org.freedesktop.Hal",u'/org/freedesktop/Hal/Manager')
+        self.hal_manager = dbus.Interface(hal_manager_obj, "org.freedesktop.Hal.Manager")
+
+        """Find button-devices and to connect to"""
+        button_devices = self.hal_manager.FindDeviceByCapability("button")
+        for device in button_devices:
+            self.bus.add_signal_receiver(self.signal_recv,
+                                        "Condition",
+                                        "org.freedesktop.Hal.Device",
+                                        "org.freedesktop.Hal",
+                                        device)
+        """Let's find our mother"""
+        self.dcop = DCOPClient()
+        self.dcop.attach()
+        found = False
+        for name in self.dcop.registeredApplications():
+            name = str(name)
+            if name.startswith('guidance-'):
+                self.motherName = name
+                try:
+                    self.mother = DCOPObj(name, self.dcop, 'power-manager')
+                    found = True
+                except:
+                    """Do nothing, catched by found=False"""
+                break
+        if not found:
+            """No mother; commit suicide"""
+            print "No guidance-power-manager is running"
+            sys.exit()
+
+        """Some laptops issue double sleep/hibernate-calls, we need to discard one in that case"""
+        self.last_sleep = 0
+        self.last_hibernate = 0
+
+        """And multiple brightness calls is also possible"""
+        self.last_brightness_up = 0
+        self.last_brightness_down = 0
+
+if __name__ == "__main__":
+    gpmh = GPMHelper()
+    loop = gobject.MainLoop()
+    loop.run()