| /* |
| * Copyright (C) 2013 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. |
| */ |
| |
| package android.transition; |
| |
| import android.animation.Animator; |
| import android.animation.ObjectAnimator; |
| import android.view.View; |
| import android.view.ViewGroup; |
| |
| /** |
| * This transition captures the rotation property of targets before and after |
| * the scene change and animates any changes. |
| * |
| * @hide |
| */ |
| public class Rotate extends Transition { |
| |
| private static final String PROPNAME_ROTATION = "android:rotate:rotation"; |
| |
| @Override |
| public void captureStartValues(TransitionValues transitionValues) { |
| transitionValues.values.put(PROPNAME_ROTATION, transitionValues.view.getRotation()); |
| } |
| |
| @Override |
| public void captureEndValues(TransitionValues transitionValues) { |
| transitionValues.values.put(PROPNAME_ROTATION, transitionValues.view.getRotation()); |
| } |
| |
| @Override |
| public Animator createAnimator(ViewGroup sceneRoot, TransitionValues startValues, |
| TransitionValues endValues) { |
| if (startValues == null || endValues == null) { |
| return null; |
| } |
| final View view = endValues.view; |
| float startRotation = (Float) startValues.values.get(PROPNAME_ROTATION); |
| float endRotation = (Float) endValues.values.get(PROPNAME_ROTATION); |
| if (startRotation != endRotation) { |
| view.setRotation(startRotation); |
| return ObjectAnimator.ofFloat(view, View.ROTATION, |
| startRotation, endRotation); |
| } |
| return null; |
| } |
| } |