зеркало из https://github.com/mozilla/pjs.git
235 строки
7.8 KiB
C++
235 строки
7.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is the Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Makoto Kato <m_kato@ga2.so-net.ne.jp> (Original Author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "Hal.h"
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#include "HalImpl.h"
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#include "nsITimer.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/dom/battery/Constants.h"
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#include <windows.h>
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using namespace mozilla::dom::battery;
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namespace mozilla {
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namespace hal_impl {
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static nsCOMPtr<nsITimer> sUpdateTimer;
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/* Power Event API is Vista or later */
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typedef HPOWERNOTIFY (WINAPI *REGISTERPOWERSETTINGNOTIFICATION) (HANDLE, LPCGUID, DWORD);
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typedef BOOL (WINAPI *UNREGISTERPOWERSETTINGNOTIFICATION) (HPOWERNOTIFY);
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static REGISTERPOWERSETTINGNOTIFICATION sRegisterPowerSettingNotification = nsnull;
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static UNREGISTERPOWERSETTINGNOTIFICATION sUnregisterPowerSettingNotification = nsnull;
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static HPOWERNOTIFY sPowerHandle = nsnull;
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static HPOWERNOTIFY sCapacityHandle = nsnull;
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static HWND sHWnd = nsnull;
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static bool
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IsVistaOrLater()
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{
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OSVERSIONINFO info;
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ZeroMemory(&info, sizeof(OSVERSIONINFO));
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info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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GetVersionEx(&info);
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return info.dwMajorVersion >= 6;
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}
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static void
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UpdateHandler(nsITimer* aTimer, void* aClosure) {
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NS_ASSERTION(!IsVistaOrLater(),
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"We shouldn't call this function for Vista or later version!");
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static hal::BatteryInformation sLastInfo;
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hal::BatteryInformation currentInfo;
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hal_impl::GetCurrentBatteryInformation(¤tInfo);
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if (sLastInfo.level() != currentInfo.level() ||
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sLastInfo.charging() != currentInfo.charging() ||
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sLastInfo.remainingTime() != currentInfo.remainingTime()) {
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hal::NotifyBatteryChange(currentInfo);
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sLastInfo = currentInfo;
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}
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}
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static
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LRESULT CALLBACK
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BatteryWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
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if (msg != WM_POWERBROADCAST || wParam != PBT_POWERSETTINGCHANGE) {
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return DefWindowProc(hwnd, msg, wParam, lParam);
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}
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hal::BatteryInformation currentInfo;
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// Since we need update remainingTime, we cannot use LPARAM.
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hal_impl::GetCurrentBatteryInformation(¤tInfo);
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hal::NotifyBatteryChange(currentInfo);
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return TRUE;
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}
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void
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EnableBatteryNotifications()
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{
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if (IsVistaOrLater()) {
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// RegisterPowerSettingNotification is from Vista or later.
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// Use this API if available.
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HMODULE hUser32 = GetModuleHandleW(L"USER32.DLL");
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if (!sRegisterPowerSettingNotification)
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sRegisterPowerSettingNotification = (REGISTERPOWERSETTINGNOTIFICATION)
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GetProcAddress(hUser32, "RegisterPowerSettingNotification");
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if (!sUnregisterPowerSettingNotification)
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sUnregisterPowerSettingNotification = (UNREGISTERPOWERSETTINGNOTIFICATION)
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GetProcAddress(hUser32, "UnregisterPowerSettingNotification");
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if (!sRegisterPowerSettingNotification ||
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!sUnregisterPowerSettingNotification) {
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NS_ASSERTION(false, "Canot find PowerSettingNotification functions.");
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return;
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}
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// Create custom window to watch battery event
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// If we can get Gecko's window handle, this is unnecessary.
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if (sHWnd == nsnull) {
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WNDCLASSW wc;
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HMODULE hSelf = GetModuleHandle(nsnull);
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if (!GetClassInfoW(hSelf, L"MozillaBatteryClass", &wc)) {
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ZeroMemory(&wc, sizeof(WNDCLASSW));
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wc.hInstance = hSelf;
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wc.lpfnWndProc = BatteryWindowProc;
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wc.lpszClassName = L"MozillaBatteryClass";
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RegisterClassW(&wc);
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}
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sHWnd = CreateWindowW(L"MozillaBatteryClass", L"Battery Watcher",
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0, 0, 0, 0, 0,
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nsnull, nsnull, hSelf, nsnull);
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}
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if (sHWnd == nsnull) {
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return;
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}
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sPowerHandle =
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sRegisterPowerSettingNotification(sHWnd,
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&GUID_ACDC_POWER_SOURCE,
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DEVICE_NOTIFY_WINDOW_HANDLE);
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sCapacityHandle =
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sRegisterPowerSettingNotification(sHWnd,
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&GUID_BATTERY_PERCENTAGE_REMAINING,
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DEVICE_NOTIFY_WINDOW_HANDLE);
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} else
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{
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// for Windows XP. If we remove Windows XP support,
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// we should remove timer-based power notification
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sUpdateTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
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if (sUpdateTimer) {
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sUpdateTimer->InitWithFuncCallback(UpdateHandler,
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nsnull,
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Preferences::GetInt("dom.battery.timer",
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30000 /* 30s */),
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nsITimer::TYPE_REPEATING_SLACK);
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}
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}
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}
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void
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DisableBatteryNotifications()
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{
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if (IsVistaOrLater()) {
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if (sPowerHandle) {
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sUnregisterPowerSettingNotification(sPowerHandle);
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sPowerHandle = nsnull;
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}
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if (sCapacityHandle) {
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sUnregisterPowerSettingNotification(sCapacityHandle);
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sCapacityHandle = nsnull;
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}
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if (sHWnd) {
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DestroyWindow(sHWnd);
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sHWnd = nsnull;
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}
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} else
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{
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if (sUpdateTimer) {
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sUpdateTimer->Cancel();
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sUpdateTimer = nsnull;
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}
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}
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}
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void
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GetCurrentBatteryInformation(hal::BatteryInformation* aBatteryInfo)
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{
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SYSTEM_POWER_STATUS status;
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if (!GetSystemPowerStatus(&status)) {
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aBatteryInfo->level() = kDefaultLevel;
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aBatteryInfo->charging() = kDefaultCharging;
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aBatteryInfo->remainingTime() = kDefaultRemainingTime;
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return;
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}
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aBatteryInfo->level() =
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status.BatteryLifePercent == 255 ? kDefaultLevel
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: ((double)status.BatteryLifePercent) / 100.0;
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aBatteryInfo->charging() = (status.ACLineStatus != 0);
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if (status.ACLineStatus != 0) {
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if (aBatteryInfo->level() == 1.0) {
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// GetSystemPowerStatus API may returns -1 for BatteryFullLifeTime.
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// So, if battery is 100%, set kDefaultRemainingTime at force.
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aBatteryInfo->remainingTime() = kDefaultRemainingTime;
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} else {
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aBatteryInfo->remainingTime() =
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status.BatteryFullLifeTime == (DWORD)-1 ? kUnknownRemainingTime
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: status.BatteryFullLifeTime;
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}
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} else {
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aBatteryInfo->remainingTime() =
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status.BatteryLifeTime == (DWORD)-1 ? kUnknownRemainingTime
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: status.BatteryLifeTime;
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}
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}
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} // hal_impl
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} // mozilla
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