Rename device_orientation to device_sensors

content/renderer/device_orientation/device_orientation_event_pump.cc

-// Copyright 2013 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 "device_orientation_event_pump.h"
-
-#include <cmath>
-
-#include "content/common/device_orientation/device_orientation_messages.h"
-#include "content/public/renderer/render_thread.h"
-#include "third_party/WebKit/public/platform/WebDeviceOrientationListener.h"
-
-namespace content {
-
-const double DeviceOrientationEventPump::kOrientationThreshold = 0.1;
-
-DeviceOrientationEventPump::DeviceOrientationEventPump()
-    : DeviceSensorEventPump(), listener_(0) {
-}
-
-DeviceOrientationEventPump::DeviceOrientationEventPump(int pump_delay_millis)
-    : DeviceSensorEventPump(pump_delay_millis), listener_(0) {
-}
-
-DeviceOrientationEventPump::~DeviceOrientationEventPump() {
-}
-
-bool DeviceOrientationEventPump::SetListener(
-    blink::WebDeviceOrientationListener* listener) {
-  listener_ = listener;
-  return listener_ ? RequestStart() : Stop();
-}
-
-bool DeviceOrientationEventPump::OnControlMessageReceived(
-    const IPC::Message& message) {
-  bool handled = true;
-  IPC_BEGIN_MESSAGE_MAP(DeviceOrientationEventPump, message)
-    IPC_MESSAGE_HANDLER(DeviceOrientationMsg_DidStartPolling, OnDidStart)
-    IPC_MESSAGE_UNHANDLED(handled = false)
-  IPC_END_MESSAGE_MAP()
-  return handled;
-}
-
-void DeviceOrientationEventPump::FireEvent() {
-  DCHECK(listener_);
-  blink::WebDeviceOrientationData data;
-  if (reader_->GetLatestData(&data) && ShouldFireEvent(data)) {
-    memcpy(&data_, &data, sizeof(data));
-    listener_->didChangeDeviceOrientation(data);
-  }
-}
-
-static bool IsSignificantlyDifferent(bool hasAngle1, double angle1,
-    bool hasAngle2, double angle2) {
-  if (hasAngle1 != hasAngle2)
-    return true;
-  return (hasAngle1 && std::fabs(angle1 - angle2) >=
-          DeviceOrientationEventPump::kOrientationThreshold);
-}
-
-bool DeviceOrientationEventPump::ShouldFireEvent(
-    const blink::WebDeviceOrientationData& data) const {
-  if (!data.allAvailableSensorsAreActive)
-    return false;
-
-  if (!data.hasAlpha && !data.hasBeta && !data.hasGamma) {
-    // no data can be provided, this is an all-null event.
-    return true;
-  }
-
-  return IsSignificantlyDifferent(
-             data_.hasAlpha, data_.alpha, data.hasAlpha, data.alpha) ||
-         IsSignificantlyDifferent(
-             data_.hasBeta, data_.beta, data.hasBeta, data.beta) ||
-         IsSignificantlyDifferent(
-             data_.hasGamma, data_.gamma, data.hasGamma, data.gamma);
-}
-
-bool DeviceOrientationEventPump::InitializeReader(
-    base::SharedMemoryHandle handle) {
-  memset(&data_, 0, sizeof(data_));
-  if (!reader_)
-    reader_.reset(new DeviceOrientationSharedMemoryReader());
-  return reader_->Initialize(handle);
-}
-
-bool DeviceOrientationEventPump::SendStartMessage() {
-  return RenderThread::Get()->Send(new DeviceOrientationHostMsg_StartPolling());
-}
-
-bool DeviceOrientationEventPump::SendStopMessage() {
-  return RenderThread::Get()->Send(new DeviceOrientationHostMsg_StopPolling());
-}
-
-}  // namespace content