src/content/renderer/device_sensors/device_motion_event_pump.cc

   1 // Copyright 2014 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 "device_motion_event_pump.h"
   6
   7 #include "content/common/device_sensors/device_motion_messages.h"
   8 #include "content/public/renderer/render_thread.h"
   9 #include "third_party/WebKit/public/platform/WebDeviceMotionListener.h"
  10
  11 namespace content {
  12
  13 DeviceMotionEventPump::DeviceMotionEventPump(RenderThread* thread)
  14     : DeviceSensorEventPump<blink::WebDeviceMotionListener>(thread) {
  15 }
  16
  17 DeviceMotionEventPump::~DeviceMotionEventPump() {
  18 }
  19
  20 bool DeviceMotionEventPump::OnControlMessageReceived(
  21     const IPC::Message& message) {
  22   bool handled = true;
  23   IPC_BEGIN_MESSAGE_MAP(DeviceMotionEventPump, message)
  24     IPC_MESSAGE_HANDLER(DeviceMotionMsg_DidStartPolling, OnDidStart)
  25     IPC_MESSAGE_UNHANDLED(handled = false)
  26   IPC_END_MESSAGE_MAP()
  27   return handled;
  28 }
  29
  30 void DeviceMotionEventPump::FireEvent() {
  31   DCHECK(listener());
  32   blink::WebDeviceMotionData data;
  33   if (reader_->GetLatestData(&data) && data.allAvailableSensorsAreActive)
  34     listener()->didChangeDeviceMotion(data);
  35 }
  36
  37 bool DeviceMotionEventPump::InitializeReader(base::SharedMemoryHandle handle) {
  38   if (!reader_)
  39     reader_.reset(new DeviceMotionSharedMemoryReader());
  40   return reader_->Initialize(handle);
  41 }
  42
  43 void DeviceMotionEventPump::SendStartMessage() {
  44   RenderThread::Get()->Send(new DeviceMotionHostMsg_StartPolling());
  45 }
  46
  47 void DeviceMotionEventPump::SendStopMessage() {
  48   RenderThread::Get()->Send(new DeviceMotionHostMsg_StopPolling());
  49 }
  50
  51 void DeviceMotionEventPump::SendFakeDataForTesting(void* fake_data) {
  52   blink::WebDeviceMotionData data =
  53       *static_cast<blink::WebDeviceMotionData*>(fake_data);
  54
  55   listener()->didChangeDeviceMotion(data);
  56 }
  57
  58 }  // namespace content