src/ash/system/chromeos/power/user_activity_notifier.cc

   1 // Copyright 2013 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.
   4
   5 #include "ash/system/chromeos/power/user_activity_notifier.h"
   6
   7 #include "ash/shell.h"
   8 #include "ash/wm/user_activity_detector.h"
   9 #include "chromeos/dbus/dbus_thread_manager.h"
  10 #include "chromeos/dbus/power_manager_client.h"
  11 #include "ui/events/event.h"
  12 #include "ui/events/event_constants.h"
  13 #include "ui/events/keycodes/keyboard_codes_posix.h"
  14
  15 namespace ash {
  16 namespace internal {
  17
  18 namespace {
  19
  20 // Minimum number of seconds between notifications.
  21 const int kNotifyIntervalSec = 5;
  22
  23 }  // namespace
  24
  25 UserActivityNotifier::UserActivityNotifier(UserActivityDetector* detector)
  26     : detector_(detector) {
  27   detector_->AddObserver(this);
  28 }
  29
  30 UserActivityNotifier::~UserActivityNotifier() {
  31   detector_->RemoveObserver(this);
  32 }
  33
  34 void UserActivityNotifier::OnUserActivity(const ui::Event* event) {
  35   base::TimeTicks now = base::TimeTicks::Now();
  36   // InSeconds() truncates rather than rounding, so it's fine for this
  37   // comparison.
  38   if (last_notify_time_.is_null() ||
  39       (now - last_notify_time_).InSeconds() >= kNotifyIntervalSec) {
  40     power_manager::UserActivityType type = power_manager::USER_ACTIVITY_OTHER;
  41     if (event && event->type() == ui::ET_KEY_PRESSED) {
  42       switch (static_cast<const ui::KeyEvent*>(event)->key_code()) {
  43         case ui::VKEY_BRIGHTNESS_UP:
  44           type = power_manager::USER_ACTIVITY_BRIGHTNESS_UP_KEY_PRESS;
  45           break;
  46         case ui::VKEY_BRIGHTNESS_DOWN:
  47           type = power_manager::USER_ACTIVITY_BRIGHTNESS_DOWN_KEY_PRESS;
  48           break;
  49         default:
  50           break;
  51       }
  52     }
  53
  54     chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->
  55         NotifyUserActivity(type);
  56     last_notify_time_ = now;
  57   }
  58 }
  59
  60 }  // namespace internal
  61 }  // namespace ash