1 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "app/system_monitor.h"
7 void SystemMonitor::ProcessWmPowerBroadcastMessage(int event_id
) {
8 PowerEvent power_event
;
10 case PBT_APMPOWERSTATUSCHANGE
: // The power status changed.
11 power_event
= POWER_STATE_EVENT
;
13 case PBT_APMRESUMEAUTOMATIC
: // Resume from suspend.
14 //case PBT_APMRESUMESUSPEND: // User-initiated resume from suspend.
15 // We don't notify for this latter event
16 // because if it occurs it is always sent as a
17 // second event after PBT_APMRESUMEAUTOMATIC.
18 power_event
= RESUME_EVENT
;
20 case PBT_APMSUSPEND
: // System has been suspended.
21 power_event
= SUSPEND_EVENT
;
26 // Other Power Events:
27 // PBT_APMBATTERYLOW - removed in Vista.
28 // PBT_APMOEMEVENT - removed in Vista.
29 // PBT_APMQUERYSUSPEND - removed in Vista.
30 // PBT_APMQUERYSUSPENDFAILED - removed in Vista.
31 // PBT_APMRESUMECRITICAL - removed in Vista.
32 // PBT_POWERSETTINGCHANGE - user changed the power settings.
34 ProcessPowerMessage(power_event
);
37 // Function to query the system to see if it is currently running on
38 // battery power. Returns true if running on battery.
39 bool SystemMonitor::IsBatteryPower() {
40 SYSTEM_POWER_STATUS status
;
41 if (!GetSystemPowerStatus(&status
)) {
42 LOG(ERROR
) << "GetSystemPowerStatus failed: " << GetLastError();
45 return (status
.ACLineStatus
== 0);