DisplayTopology propagation to IM

/*

 * Copyright 2024 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 <ftl/enum.h>

#include <ui/LogicalDisplayId.h>

#include <cinttypes>

#include <unordered_map>

#include <vector>

namespace android {

/**

 * The edge of the current display, where adjacent display is attached to.

 */

enum class DisplayTopologyPosition : int32_t {

    LEFT = 0,

    TOP = 1,

    RIGHT = 2,

    BOTTOM = 3,

    ftl_last = BOTTOM

};

/**

 * Directed edge in the graph of adjacent displays.

 */

struct DisplayTopologyAdjacentDisplay {

    ui::LogicalDisplayId displayId = ui::LogicalDisplayId::INVALID;

    DisplayTopologyPosition position;

    float offsetPx;

};

/**

 * Directed Graph representation of Display Topology.

 */

struct DisplayTopologyGraph {

    ui::LogicalDisplayId primaryDisplayId = ui::LogicalDisplayId::INVALID;

    std::unordered_map<ui::LogicalDisplayId, std::vector<DisplayTopologyAdjacentDisplay>> graph;

};

} // namespace android