1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.view;
18 
19 import android.annotation.NonNull;
20 import android.graphics.CanvasProperty;
21 import android.graphics.Paint;
22 
23 /**
24  * @hide
25  */
26 public class RenderNodeAnimator extends android.graphics.animation.RenderNodeAnimator
27         implements android.graphics.animation.RenderNodeAnimator.ViewListener {
28 
29     private View mViewTarget;
30 
RenderNodeAnimator(int property, float finalValue)31     public RenderNodeAnimator(int property, float finalValue) {
32         super(property, finalValue);
33     }
34 
RenderNodeAnimator(CanvasProperty<Float> property, float finalValue)35     public RenderNodeAnimator(CanvasProperty<Float> property, float finalValue) {
36         super(property, finalValue);
37     }
38 
RenderNodeAnimator(CanvasProperty<Paint> property, int paintField, float finalValue)39     public RenderNodeAnimator(CanvasProperty<Paint> property, int paintField, float finalValue) {
40         super(property, paintField, finalValue);
41     }
42 
RenderNodeAnimator(int x, int y, float startRadius, float endRadius)43     public RenderNodeAnimator(int x, int y, float startRadius, float endRadius) {
44         super(x, y, startRadius, endRadius);
45     }
46 
47     @Override
onAlphaAnimationStart(float finalAlpha)48     public void onAlphaAnimationStart(float finalAlpha) {
49         // Alpha is a special snowflake that has the canonical value stored
50         // in mTransformationInfo instead of in RenderNode, so we need to update
51         // it with the final value here.
52         mViewTarget.ensureTransformationInfo();
53         mViewTarget.setAlphaInternal(finalAlpha);
54     }
55 
56     @Override
invalidateParent(boolean forceRedraw)57     public void invalidateParent(boolean forceRedraw) {
58         mViewTarget.invalidateViewProperty(true, false);
59     }
60 
61     /** @hide */
setTarget(@onNull View view)62     public void setTarget(@NonNull View view) {
63         mViewTarget = view;
64         setViewListener(this);
65         setTarget(mViewTarget.mRenderNode);
66     }
67 }
68