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/*
* Copyright (C) 2023 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 <input/Input.h>
#include <map>
namespace android {
/*
* Crash if the provided touch stream is inconsistent.
*
* TODO(b/211379801): Add support for hover events:
* - No hover move without enter
* - No touching pointers when hover enter
* - No hovering pointers when touching
* - Only 1 hovering pointer max
*/
class InputVerifier {
public:
InputVerifier(const std::string& name);
void processMovement(int32_t deviceId, int32_t action, uint32_t pointerCount,
const PointerProperties* pointerProperties,
const PointerCoords* pointerCoords, int32_t flags);
private:
const std::string mName;
std::map<int32_t /*deviceId*/, std::bitset<MAX_POINTER_ID + 1>> mTouchingPointerIdsByDevice;
void ensureTouchingPointersMatch(int32_t deviceId, uint32_t pointerCount,
const PointerProperties* pointerProperties,
const char* action) const;
};
} // namespace android
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