Merge "DisplayTopology propagation to IM" into main

Author: osblinnikov

include/input/DisplayTopologyGraph.h

@@ -0,0 +1,57 @@
+/*
+ * 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