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// 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_motion_event_pump.h"
#include "content/common/device_orientation/device_motion_messages.h"
#include "content/public/renderer/render_thread.h"
#include "third_party/WebKit/public/platform/WebDeviceMotionListener.h"
namespace content {
DeviceMotionEventPump::DeviceMotionEventPump()
: DeviceSensorEventPump(), listener_(0) {
}
DeviceMotionEventPump::DeviceMotionEventPump(int pump_delay_millis)
: DeviceSensorEventPump(pump_delay_millis), listener_(0) {
}
DeviceMotionEventPump::~DeviceMotionEventPump() {
}
bool DeviceMotionEventPump::SetListener(
blink::WebDeviceMotionListener* listener) {
listener_ = listener;
return listener_ ? RequestStart() : Stop();
}
bool DeviceMotionEventPump::OnControlMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(DeviceMotionEventPump, message)
IPC_MESSAGE_HANDLER(DeviceMotionMsg_DidStartPolling, OnDidStart)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void DeviceMotionEventPump::FireEvent() {
DCHECK(listener_);
blink::WebDeviceMotionData data;
if (reader_->GetLatestData(&data) && data.allAvailableSensorsAreActive)
listener_->didChangeDeviceMotion(data);
}
bool DeviceMotionEventPump::InitializeReader(base::SharedMemoryHandle handle) {
if (!reader_)
reader_.reset(new DeviceMotionSharedMemoryReader());
return reader_->Initialize(handle);
}
bool DeviceMotionEventPump::SendStartMessage() {
return RenderThread::Get()->Send(new DeviceMotionHostMsg_StartPolling());
}
bool DeviceMotionEventPump::SendStopMessage() {
return RenderThread::Get()->Send(new DeviceMotionHostMsg_StopPolling());
}
} // namespace content
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