AnimateableViewBounds.java revision dcfa7976fa836ae90bb4a579892a18a0abf35b3c 
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
17package com.android.systemui.recents.views;
18
19import android.animation.ObjectAnimator;
20import android.graphics.Outline;
21import android.graphics.Rect;
22import android.view.View;
23import android.view.ViewOutlineProvider;
24import com.android.systemui.recents.RecentsConfiguration;
25
26/* An outline provider that has a clip and outline that can be animated. */
27public class AnimateableViewBounds extends ViewOutlineProvider {
28
29    RecentsConfiguration mConfig;
30
31    View mSourceView;
32    Rect mClipRect = new Rect();
33    Rect mOutlineClipRect = new Rect();
34    int mCornerRadius;
35
36    ObjectAnimator mClipTopAnimator;
37    ObjectAnimator mClipBottomAnimator;
38
39    public AnimateableViewBounds(View source, int cornerRadius) {
40        mConfig = RecentsConfiguration.getInstance();
41        mSourceView = source;
42        mCornerRadius = cornerRadius;
43        mSourceView.setClipToOutline(true);
44        setClipTop(getClipTop());
45        setClipBottom(getClipBottom());
46        setOutlineClipBottom(getOutlineClipBottom());
47    }
48
49    @Override
50    public void getOutline(View view, Outline outline) {
51        outline.setRoundRect(Math.max(mClipRect.left, mOutlineClipRect.left),
52                Math.max(mClipRect.top, mOutlineClipRect.top),
53                mSourceView.getMeasuredWidth() - Math.max(mClipRect.right, mOutlineClipRect.right),
54                mSourceView.getMeasuredHeight() - Math.max(mClipRect.bottom, mOutlineClipRect.bottom),
55                mCornerRadius);
56    }
57
58    /** Animates the top clip. */
59    void animateClipTop(int top, int duration) {
60        if (mClipTopAnimator != null) {
61            mClipTopAnimator.removeAllListeners();
62            mClipTopAnimator.cancel();
63        }
64        mClipTopAnimator = ObjectAnimator.ofInt(this, "clipTop", top);
65        mClipTopAnimator.setDuration(duration);
66        mClipTopAnimator.setInterpolator(mConfig.fastOutSlowInInterpolator);
67        mClipTopAnimator.start();
68    }
69
70    /** Sets the top clip. */
71    public void setClipTop(int top) {
72        if (top != mClipRect.top) {
73            mClipRect.top = top;
74            mSourceView.invalidateOutline();
75        }
76    }
77
78    /** Returns the top clip. */
79    public int getClipTop() {
80        return mClipRect.top;
81    }
82
83    /** Animates the bottom clip. */
84    void animateClipBottom(int bottom, int duration) {
85        if (mClipTopAnimator != null) {
86            mClipTopAnimator.removeAllListeners();
87            mClipTopAnimator.cancel();
88        }
89        mClipTopAnimator = ObjectAnimator.ofInt(this, "clipBottom", bottom);
90        mClipTopAnimator.setDuration(duration);
91        mClipTopAnimator.setInterpolator(mConfig.fastOutSlowInInterpolator);
92        mClipTopAnimator.start();
93    }
94
95    /** Sets the bottom clip. */
96    public void setClipBottom(int bottom) {
97        if (bottom != mClipRect.bottom) {
98            mClipRect.bottom = bottom;
99            mSourceView.invalidateOutline();
100        }
101    }
102
103    /** Returns the bottom clip. */
104    public int getClipBottom() {
105        return mClipRect.bottom;
106    }
107
108    public void setOutlineClipBottom(int bottom) {
109        if (bottom != mOutlineClipRect.bottom) {
110            mOutlineClipRect.bottom = bottom;
111            mSourceView.invalidateOutline();
112        }
113    }
114
115    public int getOutlineClipBottom() {
116        return mOutlineClipRect.bottom;
117    }
118}
119