| /* |
| * 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/mixins.h> |
| #include <sys/types.h> |
| #include <string> |
| |
| #include <ostream> |
| |
| namespace android::ui { |
| |
| // Type-safe wrapper for a logical display id. |
| struct LogicalDisplayId : ftl::Constructible<LogicalDisplayId, int32_t>, |
| ftl::Equatable<LogicalDisplayId>, |
| ftl::Orderable<LogicalDisplayId> { |
| using Constructible::Constructible; |
| |
| constexpr auto val() const { return ftl::to_underlying(*this); } |
| |
| constexpr bool isValid() const { return val() >= 0; } |
| |
| std::string toString() const { return std::to_string(val()); } |
| |
| static const LogicalDisplayId INVALID; |
| static const LogicalDisplayId DEFAULT; |
| }; |
| |
| constexpr inline LogicalDisplayId LogicalDisplayId::INVALID{-1}; |
| constexpr inline LogicalDisplayId LogicalDisplayId::DEFAULT{0}; |
| |
| inline std::ostream& operator<<(std::ostream& stream, LogicalDisplayId displayId) { |
| return stream << displayId.val(); |
| } |
| |
| } // namespace android::ui |
| |
| namespace std { |
| template <> |
| struct hash<android::ui::LogicalDisplayId> { |
| size_t operator()(const android::ui::LogicalDisplayId& displayId) const { |
| return hash<int32_t>()(displayId.val()); |
| } |
| }; |
| } // namespace std |