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/*
* Copyright 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 "PointerControllerInterface.h"
namespace android {
/**
* The PointerChoreographer policy interface.
*
* This is the interface that PointerChoreographer uses to talk to Window Manager and other
* system components.
*
* NOTE: In general, the PointerChoreographer must not interact with the policy while
* holding any locks.
*/
class PointerChoreographerPolicyInterface {
public:
virtual ~PointerChoreographerPolicyInterface() = default;
/**
* A factory method for PointerController. The PointerController implementation has
* dependencies on a graphical library - libgui, used to draw icons on the screen - which
* isn't available for the host. Since we want libinputflinger and its test to be buildable
* for and runnable on the host, the PointerController implementation must be in a separate
* library, libinputservice, that has the additional dependencies. The PointerController
* will be mocked when testing PointerChoreographer.
*
* Since this is a factory method used to work around dependencies, it will not interact with
* other input components and may be called with the PointerChoreographer lock held.
*/
virtual std::shared_ptr<PointerControllerInterface> createPointerController(
PointerControllerInterface::ControllerType type) = 0;
/**
* Notifies the policy that the default pointer displayId has changed. PointerChoreographer is
* the single source of truth for all pointers on screen.
* @param displayId The updated display on which the mouse cursor is shown
* @param position The new position of the mouse cursor on the logical display
*/
virtual void notifyPointerDisplayIdChanged(int32_t displayId, const FloatPoint& position) = 0;
};
} // namespace android
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