| /* |
| * Copyright 2013 Google Inc. |
| * |
| * 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. |
| */ |
| package com.google.gwt.animation.client; |
| |
| import com.google.gwt.core.client.JavaScriptObject; |
| import com.google.gwt.dom.client.Element; |
| |
| /** |
| * {@link AnimationScheduler} implementation that uses standard {@code requestAnimationFrame} API. |
| */ |
| class AnimationSchedulerImplStandard extends AnimationScheduler { |
| |
| @Override |
| public AnimationHandle requestAnimationFrame(AnimationCallback callback, Element element) { |
| final JavaScriptObject handle = requestImpl(callback, element); |
| return new AnimationHandle() { |
| @Override public void cancel() { |
| cancelImpl(handle); |
| } |
| }; |
| } |
| |
| private static native JavaScriptObject requestImpl(AnimationCallback cb, Element element) /*-{ |
| var callback = $entry(function() { |
| var time = @com.google.gwt.core.client.Duration::currentTimeMillis()(); |
| cb.@com.google.gwt.animation.client.AnimationScheduler.AnimationCallback::execute(D)(time); |
| }); |
| |
| var handle = $wnd.requestAnimationFrame(callback, element); |
| |
| // We can not treat handle as JSO in dev-mode if it is a number. Ensure that it is not: |
| return {id: handle}; |
| }-*/; |
| |
| private static native void cancelImpl(JavaScriptObject holder) /*-{ |
| $wnd.cancelAnimationFrame(holder.id); |
| }-*/; |
| } |