| // Copyright 2023 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| library fuchsia.hardware.display; |
| |
| /// Type of the internal value in [`fuchsia.hardware.display/EventId`]. |
| alias EventIdValue = uint64; |
| |
| /// Identifies a Zircon event shared between the Display Coordinator and a |
| /// client. |
| /// |
| /// [`fuchsia.hardware.display/INVALID_DISP_ID`] represents an invalid value. |
| /// |
| /// Values are managed by [`fuchsia.hardware.display/Coordinator`] clients, to |
| /// facilitate feed-forward dataflow. |
| /// |
| /// Valid values uniquely identify Zircon events imported to the Coordinator |
| /// within a display Coordinator connection. |
| // TODO(fxbug.dev/130027): Figure out a more accurate description for the |
| // ID uniqueness. |
| type EventId = struct { |
| value EventIdValue; |
| }; |
