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/*
* Copyright 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <list>
#include <memory>
#include <set>
#include <vector>
#include <PointerControllerInterface.h>
#include <utils/Timers.h>
#include "CapturedTouchpadEventConverter.h"
#include "EventHub.h"
#include "InputDevice.h"
#include "InputMapper.h"
#include "InputReaderBase.h"
#include "NotifyArgs.h"
#include "accumulator/MultiTouchMotionAccumulator.h"
#include "gestures/GestureConverter.h"
#include "gestures/HardwareStateConverter.h"
#include "gestures/PropertyProvider.h"
#include "gestures/TimerProvider.h"
#include "include/gestures.h"
namespace android {
class TouchpadInputMapper : public InputMapper {
public:
template <class T, class... Args>
friend std::unique_ptr<T> createInputMapper(InputDeviceContext& deviceContext,
const InputReaderConfiguration& readerConfig,
Args... args);
~TouchpadInputMapper();
uint32_t getSources() const override;
void populateDeviceInfo(InputDeviceInfo& deviceInfo) override;
void dump(std::string& dump) override;
[[nodiscard]] std::list<NotifyArgs> reconfigure(nsecs_t when,
const InputReaderConfiguration& config,
ConfigurationChanges changes) override;
[[nodiscard]] std::list<NotifyArgs> reset(nsecs_t when) override;
[[nodiscard]] std::list<NotifyArgs> process(const RawEvent* rawEvent) override;
[[nodiscard]] std::list<NotifyArgs> timeoutExpired(nsecs_t when) override;
void consumeGesture(const Gesture* gesture);
// A subset of InputDeviceIdentifier used for logging metrics, to avoid storing a copy of the
// strings in that bigger struct.
using MetricsIdentifier = std::tuple<uint16_t /*busId*/, uint16_t /*vendorId*/,
uint16_t /*productId*/, uint16_t /*version*/>;
std::optional<int32_t> getAssociatedDisplayId() override;
private:
void resetGestureInterpreter(nsecs_t when);
explicit TouchpadInputMapper(InputDeviceContext& deviceContext,
const InputReaderConfiguration& readerConfig);
// Constructor for testing.
explicit TouchpadInputMapper(InputDeviceContext& deviceContext,
const InputReaderConfiguration& readerConfig,
bool enablePointerChoreographer);
void updatePalmDetectionMetrics();
[[nodiscard]] std::list<NotifyArgs> sendHardwareState(nsecs_t when, nsecs_t readTime,
SelfContainedHardwareState schs);
[[nodiscard]] std::list<NotifyArgs> processGestures(nsecs_t when, nsecs_t readTime);
std::unique_ptr<gestures::GestureInterpreter, void (*)(gestures::GestureInterpreter*)>
mGestureInterpreter;
std::shared_ptr<PointerControllerInterface> mPointerController;
PropertyProvider mPropertyProvider;
TimerProvider mTimerProvider;
// The MultiTouchMotionAccumulator is shared between the HardwareStateConverter and
// CapturedTouchpadEventConverter, so that if the touchpad is captured or released while touches
// are down, the relevant converter can still benefit from the current axis values stored in the
// accumulator.
MultiTouchMotionAccumulator mMotionAccumulator;
HardwareStateConverter mStateConverter;
GestureConverter mGestureConverter;
CapturedTouchpadEventConverter mCapturedEventConverter;
bool mPointerCaptured = false;
bool mResettingInterpreter = false;
std::vector<Gesture> mGesturesToProcess;
static MetricsIdentifier metricsIdFromInputDeviceIdentifier(const InputDeviceIdentifier& id) {
return std::make_tuple(id.bus, id.vendor, id.product, id.version);
}
const MetricsIdentifier mMetricsId;
// Tracking IDs for touches on the pad in the last evdev frame.
std::set<int32_t> mLastFrameTrackingIds;
// Tracking IDs for touches that have at some point been reported as palms by the touchpad.
std::set<int32_t> mPalmTrackingIds;
const bool mEnablePointerChoreographer;
// The display that events generated by this mapper should target. This can be set to
// ADISPLAY_ID_NONE to target the focused display. If there is no display target (i.e.
// std::nullopt), all events will be ignored.
std::optional<int32_t> mDisplayId;
nsecs_t mGestureStartTime{0};
};
} // namespace android
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