1 /* 2 * Copyright 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <ftl/enum.h> 20 #include <ui/LogicalDisplayId.h> 21 22 #include <cinttypes> 23 #include <unordered_map> 24 #include <vector> 25 26 namespace android { 27 28 /** 29 * The edge of the current display, where adjacent display is attached to. 30 */ 31 enum class DisplayTopologyPosition : int32_t { 32 LEFT = 0, 33 TOP = 1, 34 RIGHT = 2, 35 BOTTOM = 3, 36 37 ftl_last = BOTTOM 38 }; 39 40 /** 41 * Directed edge in the graph of adjacent displays. 42 */ 43 struct DisplayTopologyAdjacentDisplay { 44 ui::LogicalDisplayId displayId = ui::LogicalDisplayId::INVALID; 45 // Position of the adjacent display, relative to the source display. 46 DisplayTopologyPosition position; 47 // The offset in DP of the adjacent display, relative to the source display. 48 float offsetDp; 49 50 std::string dump() const; 51 }; 52 53 /** 54 * Directed Graph representation of Display Topology. 55 */ 56 struct DisplayTopologyGraph { 57 ui::LogicalDisplayId primaryDisplayId = ui::LogicalDisplayId::INVALID; 58 std::unordered_map<ui::LogicalDisplayId, std::vector<DisplayTopologyAdjacentDisplay>> graph; 59 std::unordered_map<ui::LogicalDisplayId, int> displaysDensity; 60 61 bool isValid() const; 62 std::string dump() const; 63 }; 64 65 } // namespace android 66