| // Copyright 2015 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 "content/browser/device_sensors/device_orientation_absolute_message_filter.h" |
| |
| #include "content/browser/device_sensors/device_inertial_sensor_service.h" |
| #include "content/common/device_sensors/device_orientation_messages.h" |
| |
| namespace content { |
| |
| DeviceOrientationAbsoluteMessageFilter::DeviceOrientationAbsoluteMessageFilter() |
| : BrowserMessageFilter(DeviceOrientationMsgStart), |
| is_started_(false) { |
| } |
| |
| DeviceOrientationAbsoluteMessageFilter:: |
| ~DeviceOrientationAbsoluteMessageFilter() { |
| DCHECK_CURRENTLY_ON(BrowserThread::IO); |
| if (is_started_) { |
| DeviceInertialSensorService::GetInstance()->RemoveConsumer( |
| CONSUMER_TYPE_ORIENTATION_ABSOLUTE); |
| } |
| } |
| |
| bool DeviceOrientationAbsoluteMessageFilter::OnMessageReceived( |
| const IPC::Message& message) { |
| bool handled = true; |
| IPC_BEGIN_MESSAGE_MAP(DeviceOrientationAbsoluteMessageFilter, message) |
| IPC_MESSAGE_HANDLER(DeviceOrientationAbsoluteHostMsg_StartPolling, |
| OnStartPolling) |
| IPC_MESSAGE_HANDLER(DeviceOrientationAbsoluteHostMsg_StopPolling, |
| OnStopPolling) |
| IPC_MESSAGE_UNHANDLED(handled = false) |
| IPC_END_MESSAGE_MAP() |
| return handled; |
| } |
| |
| void DeviceOrientationAbsoluteMessageFilter::OnStartPolling() { |
| DCHECK(!is_started_); |
| if (is_started_) |
| return; |
| is_started_ = true; |
| DeviceInertialSensorService::GetInstance()->AddConsumer( |
| CONSUMER_TYPE_ORIENTATION_ABSOLUTE); |
| DidStartPolling(); |
| } |
| |
| void DeviceOrientationAbsoluteMessageFilter::OnStopPolling() { |
| DCHECK(is_started_); |
| if (!is_started_) |
| return; |
| is_started_ = false; |
| DeviceInertialSensorService::GetInstance()->RemoveConsumer( |
| CONSUMER_TYPE_ORIENTATION_ABSOLUTE); |
| } |
| |
| void DeviceOrientationAbsoluteMessageFilter::DidStartPolling() { |
| Send(new DeviceOrientationAbsoluteMsg_DidStartPolling( |
| DeviceInertialSensorService::GetInstance()-> |
| GetSharedMemoryHandleForProcess( |
| CONSUMER_TYPE_ORIENTATION_ABSOLUTE, |
| PeerHandle()))); |
| } |
| |
| } // namespace content |