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// Copyright 2014 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.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_DEVICE_ORIENTATION_DEVICE_ORIENTATION_EVENT_PUMP_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_DEVICE_ORIENTATION_DEVICE_ORIENTATION_EVENT_PUMP_H_
#include "base/macros.h"
#include "third_party/blink/renderer/modules/device_orientation/device_sensor_event_pump.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
namespace blink {
class DeviceOrientationData;
class DeviceSensorEntry;
class PlatformEventController;
class MODULES_EXPORT DeviceOrientationEventPump
: public GarbageCollected<DeviceOrientationEventPump>,
public DeviceSensorEventPump {
USING_GARBAGE_COLLECTED_MIXIN(DeviceOrientationEventPump);
public:
// Angle threshold beyond which two orientation events are considered
// sufficiently different.
static const double kOrientationThreshold;
explicit DeviceOrientationEventPump(
scoped_refptr<base::SingleThreadTaskRunner> task_runner,
bool absolute);
~DeviceOrientationEventPump() override;
void SetController(PlatformEventController*);
void RemoveController();
// Note that the returned object is owned by this class.
DeviceOrientationData* LatestDeviceOrientationData();
void Trace(blink::Visitor*) override;
// DeviceSensorEventPump:
void SendStartMessage(LocalFrame* frame) override;
void SendStopMessage() override;
protected:
// DeviceSensorEventPump:
void FireEvent(TimerBase*) override;
void DidStartIfPossible() override;
Member<DeviceSensorEntry> relative_orientation_sensor_;
Member<DeviceSensorEntry> absolute_orientation_sensor_;
private:
friend class DeviceOrientationEventPumpTest;
friend class DeviceAbsoluteOrientationEventPumpTest;
void StartListening(LocalFrame*);
void StopListening();
void NotifyController();
// DeviceSensorEventPump:
bool SensorsReadyOrErrored() const override;
DeviceOrientationData* GetDataFromSharedMemory();
bool ShouldFireEvent(const DeviceOrientationData* data) const;
bool absolute_;
bool fall_back_to_absolute_orientation_sensor_;
bool should_suspend_absolute_orientation_sensor_ = false;
Member<DeviceOrientationData> data_;
Member<PlatformEventController> controller_;
DISALLOW_COPY_AND_ASSIGN(DeviceOrientationEventPump);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_DEVICE_ORIENTATION_DEVICE_ORIENTATION_EVENT_PUMP_H_