// Copyright (c) 2008 The Chromium Authors. All rights reserved. | |
// Use of this source code is governed by a BSD-style license that can be | |
// found in the LICENSE file. | |
#include "base/system_monitor.h" | |
namespace base { | |
void SystemMonitor::ProcessWmPowerBroadcastMessage(int event_id) { | |
PowerEvent power_event; | |
switch (event_id) { | |
case PBT_APMPOWERSTATUSCHANGE: // The power status changed. | |
power_event = POWER_STATE_EVENT; | |
break; | |
case PBT_APMRESUMEAUTOMATIC: // Non-user initiated resume from suspend. | |
case PBT_APMRESUMESUSPEND: // User initiated resume from suspend. | |
power_event = RESUME_EVENT; | |
break; | |
case PBT_APMSUSPEND: // System has been suspended. | |
power_event = SUSPEND_EVENT; | |
break; | |
default: | |
return; | |
// Other Power Events: | |
// PBT_APMBATTERYLOW - removed in Vista. | |
// PBT_APMOEMEVENT - removed in Vista. | |
// PBT_APMQUERYSUSPEND - removed in Vista. | |
// PBT_APMQUERYSUSPENDFAILED - removed in Vista. | |
// PBT_APMRESUMECRITICAL - removed in Vista. | |
// PBT_POWERSETTINGCHANGE - user changed the power settings. | |
} | |
ProcessPowerMessage(power_event); | |
} | |
// Function to query the system to see if it is currently running on | |
// battery power. Returns true if running on battery. | |
bool SystemMonitor::IsBatteryPower() { | |
SYSTEM_POWER_STATUS status; | |
if (!GetSystemPowerStatus(&status)) { | |
LOG(ERROR) << "GetSystemPowerStatus failed: " << GetLastError(); | |
return false; | |
} | |
return (status.ACLineStatus == 0); | |
} | |
} // namespace base |