| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // @dart = 2.6 |
| import 'dart:typed_data'; |
| import 'dart:ui'; |
| |
| /// A scenario to run for testing. |
| abstract class Scenario { |
| /// Creates a new scenario using a specific Window instance. |
| const Scenario(this.window); |
| |
| /// The window used by this scenario. May be mocked. |
| final Window window; |
| |
| /// Called by the program when a frame is ready to be drawn. |
| /// |
| /// See [Window.onBeginFrame] for more details. |
| void onBeginFrame(Duration duration) {} |
| |
| /// Called by the program when the microtasks from [onBeginFrame] have been |
| /// flushed. |
| /// |
| /// See [Window.onDrawFrame] for more details. |
| void onDrawFrame() {} |
| |
| /// Called by the program when the window metrics have changed. |
| /// |
| /// See [Window.onMetricsChanged]. |
| void onMetricsChanged() {} |
| |
| /// Called by the program when a pointer event is received. |
| /// |
| /// See [Window.onPointerDataPacket]. |
| void onPointerDataPacket(PointerDataPacket packet) {} |
| |
| /// Called by the program when an engine side platform channel message is |
| /// received. |
| /// |
| /// See [Window.onPlatformMessage]. |
| void onPlatformMessage( |
| String name, |
| ByteData data, |
| PlatformMessageResponseCallback callback, |
| ) {} |
| } |