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3110059915
Some files are moved by this: Copy framework/node.dart into types/ - preparing for framework/'s decomissioning. Move app/scheduler.dart into sky/scheduler.dart - "app" doesn't really make sense. As part of the SkyBinding cleanup, I made the hit-testing less RenderBox-specific, by having the HitTestEntry.target member be a HitTestTarget, which is an interface with the handleEvent() function, which is then implemented by RenderBox. In theory, someone could now extend hit testing from the RenderBox world into their own tree of nodes, and take part in all the same dispatch logic automatically. This involved moving all the hit testing type definitions into a new sky/hittest.dart file. Renamed SkyBinding._app to SkyBinding._instance for clarity. Moved code around in SkyBinding so that related things are together. Made WidgetSkyBinding use the existing SkyBinding.instance singleton logic rather than having its own copy. I also added some stub README.md files that describe dependencies. R=abarth@chromium.org Review URL: https://codereview.chromium.org/1187393002.
61 lines
1.5 KiB
Dart
61 lines
1.5 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:sky' as sky;
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typedef void Callback(double timeStamp);
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bool _haveScheduledVisualUpdate = false;
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int _nextCallbackId = 1;
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final List<Callback> _persistentCallbacks = new List<Callback>();
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Map<int, Callback> _transientCallbacks = new Map<int, Callback>();
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void _beginFrame(double timeStamp) {
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_haveScheduledVisualUpdate = false;
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Map<int, Callback> callbacks = _transientCallbacks;
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_transientCallbacks = new Map<int, Callback>();
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callbacks.forEach((id, callback) {
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callback(timeStamp);
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});
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for (Callback callback in _persistentCallbacks)
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callback(timeStamp);
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}
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void init() {
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assert(sky.window == null);
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sky.view.setBeginFrameCallback(_beginFrame);
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}
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void addPersistentFrameCallback(Callback callback) {
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assert(sky.window == null);
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_persistentCallbacks.add(callback);
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}
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int requestAnimationFrame(Callback callback) {
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if (sky.window != null)
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return sky.window.requestAnimationFrame(callback);
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int id = _nextCallbackId++;
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_transientCallbacks[id] = callback;
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ensureVisualUpdate();
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return id;
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}
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void cancelAnimationFrame(int id) {
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if (sky.window != null)
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return sky.window.cancelAnimationFrame(id);
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_transientCallbacks.remove(id);
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}
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void ensureVisualUpdate() {
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assert(sky.window == null);
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if (_haveScheduledVisualUpdate)
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return;
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sky.view.scheduleFrame();
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_haveScheduledVisualUpdate = true;
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}
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