1/*
2 * Copyright (C) 2012 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.launcher2;
18
19import android.animation.Animator;
20import android.animation.Animator.AnimatorListener;
21import android.animation.TimeInterpolator;
22import android.view.View;
23import android.view.ViewPropertyAnimator;
24
25import java.util.ArrayList;
26import java.util.EnumSet;
27
28public class LauncherViewPropertyAnimator extends Animator implements AnimatorListener {
29    enum Properties {
30            TRANSLATION_X,
31            TRANSLATION_Y,
32            SCALE_X,
33            SCALE_Y,
34            ROTATION_Y,
35            ALPHA,
36            START_DELAY,
37            DURATION,
38            INTERPOLATOR
39    }
40    EnumSet<Properties> mPropertiesToSet = EnumSet.noneOf(Properties.class);
41    ViewPropertyAnimator mViewPropertyAnimator;
42    View mTarget;
43
44    float mTranslationX;
45    float mTranslationY;
46    float mScaleX;
47    float mScaleY;
48    float mRotationY;
49    float mAlpha;
50    long mStartDelay;
51    long mDuration;
52    TimeInterpolator mInterpolator;
53    ArrayList<Animator.AnimatorListener> mListeners;
54    boolean mRunning = false;
55    FirstFrameAnimatorHelper mFirstFrameHelper;
56
57    public LauncherViewPropertyAnimator(View target) {
58        mTarget = target;
59        mListeners = new ArrayList<Animator.AnimatorListener>();
60    }
61
62    @Override
63    public void addListener(Animator.AnimatorListener listener) {
64        mListeners.add(listener);
65    }
66
67    @Override
68    public void cancel() {
69        if (mViewPropertyAnimator != null) {
70            mViewPropertyAnimator.cancel();
71        }
72    }
73
74    @Override
75    public Animator clone() {
76        throw new RuntimeException("Not implemented");
77    }
78
79    @Override
80    public void end() {
81        throw new RuntimeException("Not implemented");
82    }
83
84    @Override
85    public long getDuration() {
86        return mDuration;
87    }
88
89    @Override
90    public ArrayList<Animator.AnimatorListener> getListeners() {
91        return mListeners;
92    }
93
94    @Override
95    public long getStartDelay() {
96        return mStartDelay;
97    }
98
99    @Override
100    public void onAnimationCancel(Animator animation) {
101        for (int i = 0; i < mListeners.size(); i++) {
102            Animator.AnimatorListener listener = mListeners.get(i);
103            listener.onAnimationCancel(this);
104        }
105        mRunning = false;
106    }
107
108    @Override
109    public void onAnimationEnd(Animator animation) {
110        for (int i = 0; i < mListeners.size(); i++) {
111            Animator.AnimatorListener listener = mListeners.get(i);
112            listener.onAnimationEnd(this);
113        }
114        mRunning = false;
115    }
116
117    @Override
118    public void onAnimationRepeat(Animator animation) {
119        for (int i = 0; i < mListeners.size(); i++) {
120            Animator.AnimatorListener listener = mListeners.get(i);
121            listener.onAnimationRepeat(this);
122        }
123    }
124
125    @Override
126    public void onAnimationStart(Animator animation) {
127        // This is the first time we get a handle to the internal ValueAnimator
128        // used by the ViewPropertyAnimator.
129        mFirstFrameHelper.onAnimationStart(animation);
130
131        for (int i = 0; i < mListeners.size(); i++) {
132            Animator.AnimatorListener listener = mListeners.get(i);
133            listener.onAnimationStart(this);
134        }
135        mRunning = true;
136    }
137
138    @Override
139    public boolean isRunning() {
140        return mRunning;
141    }
142
143    @Override
144    public boolean isStarted() {
145        return mViewPropertyAnimator != null;
146    }
147
148    @Override
149    public void removeAllListeners() {
150        mListeners.clear();
151    }
152
153    @Override
154    public void removeListener(Animator.AnimatorListener listener) {
155        mListeners.remove(listener);
156    }
157
158    @Override
159    public Animator setDuration(long duration) {
160        mPropertiesToSet.add(Properties.DURATION);
161        mDuration = duration;
162        return this;
163    }
164
165    @Override
166    public void setInterpolator(TimeInterpolator value) {
167        mPropertiesToSet.add(Properties.INTERPOLATOR);
168        mInterpolator = value;
169    }
170
171    @Override
172    public void setStartDelay(long startDelay) {
173        mPropertiesToSet.add(Properties.START_DELAY);
174        mStartDelay = startDelay;
175    }
176
177    @Override
178    public void setTarget(Object target) {
179        throw new RuntimeException("Not implemented");
180    }
181
182    @Override
183    public void setupEndValues() {
184
185    }
186
187    @Override
188    public void setupStartValues() {
189    }
190
191    @Override
192    public void start() {
193        mViewPropertyAnimator = mTarget.animate();
194
195        // FirstFrameAnimatorHelper hooks itself up to the updates on the animator,
196        // and then adjusts the play time to keep the first two frames jank-free
197        mFirstFrameHelper = new FirstFrameAnimatorHelper(mViewPropertyAnimator, mTarget);
198
199        if (mPropertiesToSet.contains(Properties.TRANSLATION_X)) {
200            mViewPropertyAnimator.translationX(mTranslationX);
201        }
202        if (mPropertiesToSet.contains(Properties.TRANSLATION_Y)) {
203            mViewPropertyAnimator.translationY(mTranslationY);
204        }
205        if (mPropertiesToSet.contains(Properties.SCALE_X)) {
206            mViewPropertyAnimator.scaleX(mScaleX);
207        }
208        if (mPropertiesToSet.contains(Properties.ROTATION_Y)) {
209            mViewPropertyAnimator.rotationY(mRotationY);
210        }
211        if (mPropertiesToSet.contains(Properties.SCALE_Y)) {
212            mViewPropertyAnimator.scaleY(mScaleY);
213        }
214        if (mPropertiesToSet.contains(Properties.ALPHA)) {
215            mViewPropertyAnimator.alpha(mAlpha);
216        }
217        if (mPropertiesToSet.contains(Properties.START_DELAY)) {
218            mViewPropertyAnimator.setStartDelay(mStartDelay);
219        }
220        if (mPropertiesToSet.contains(Properties.DURATION)) {
221            mViewPropertyAnimator.setDuration(mDuration);
222        }
223        if (mPropertiesToSet.contains(Properties.INTERPOLATOR)) {
224            mViewPropertyAnimator.setInterpolator(mInterpolator);
225        }
226        mViewPropertyAnimator.setListener(this);
227        mViewPropertyAnimator.start();
228        LauncherAnimUtils.cancelOnDestroyActivity(this);
229    }
230
231    public LauncherViewPropertyAnimator translationX(float value) {
232        mPropertiesToSet.add(Properties.TRANSLATION_X);
233        mTranslationX = value;
234        return this;
235    }
236
237    public LauncherViewPropertyAnimator translationY(float value) {
238        mPropertiesToSet.add(Properties.TRANSLATION_Y);
239        mTranslationY = value;
240        return this;
241    }
242
243    public LauncherViewPropertyAnimator scaleX(float value) {
244        mPropertiesToSet.add(Properties.SCALE_X);
245        mScaleX = value;
246        return this;
247    }
248
249    public LauncherViewPropertyAnimator scaleY(float value) {
250        mPropertiesToSet.add(Properties.SCALE_Y);
251        mScaleY = value;
252        return this;
253    }
254
255    public LauncherViewPropertyAnimator rotationY(float value) {
256        mPropertiesToSet.add(Properties.ROTATION_Y);
257        mRotationY = value;
258        return this;
259    }
260
261    public LauncherViewPropertyAnimator alpha(float value) {
262        mPropertiesToSet.add(Properties.ALPHA);
263        mAlpha = value;
264        return this;
265    }
266}
267