Using ViewPropertyAnimator for animations

Replacing some use of fastInvalidate/setFast*
methods with ViewPropertyAnimator animations

Change-Id: Id5a8934b38d9ae3a95b6dccb431f9787839d2927
diff --git a/src/com/android/launcher2/LauncherViewPropertyAnimator.java b/src/com/android/launcher2/LauncherViewPropertyAnimator.java
new file mode 100644
index 0000000..f5becdc
--- /dev/null
+++ b/src/com/android/launcher2/LauncherViewPropertyAnimator.java
@@ -0,0 +1,255 @@
+/*
+ * Copyright (C) 2012 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 com.android.launcher2;
+
+import android.animation.Animator;
+import android.animation.Animator.AnimatorListener;
+import android.animation.TimeInterpolator;
+import android.view.ViewPropertyAnimator;
+import android.view.View;
+
+import java.util.ArrayList;
+import java.util.EnumSet;
+
+public class LauncherViewPropertyAnimator extends Animator implements AnimatorListener {
+    enum Properties {
+            TRANSLATION_X,
+            TRANSLATION_Y,
+            SCALE_X,
+            SCALE_Y,
+            ROTATION_Y,
+            ALPHA,
+            START_DELAY,
+            DURATION,
+            INTERPOLATOR
+    }
+    EnumSet<Properties> mPropertiesToSet = EnumSet.noneOf(Properties.class);
+    ViewPropertyAnimator mViewPropertyAnimator;
+    View mTarget;
+
+    float mTranslationX;
+    float mTranslationY;
+    float mScaleX;
+    float mScaleY;
+    float mRotationY;
+    float mAlpha;
+    long mStartDelay;
+    long mDuration;
+    TimeInterpolator mInterpolator;
+    Animator.AnimatorListener mListener;
+    boolean mRunning = false;
+
+    public LauncherViewPropertyAnimator(View target) {
+        mTarget = target;
+    }
+
+    @Override
+    public void addListener(Animator.AnimatorListener listener) {
+        if (mListener != null) {
+            throw new RuntimeException("Only one listener supported");
+        }
+        mListener = listener;
+    }
+
+    @Override
+    public void cancel() {
+        mViewPropertyAnimator.cancel();
+    }
+
+    @Override
+    public Animator clone() {
+        throw new RuntimeException("Not implemented");
+    }
+
+    @Override
+    public void end() {
+        throw new RuntimeException("Not implemented");
+    }
+
+    @Override
+    public long getDuration() {
+        return mViewPropertyAnimator.getDuration();
+    }
+
+    @Override
+    public ArrayList<Animator.AnimatorListener> getListeners() {
+        return null;
+    }
+
+    @Override
+    public long getStartDelay() {
+        return mViewPropertyAnimator.getStartDelay();
+    }
+
+    @Override
+    public void onAnimationCancel(Animator animation) {
+        if (mListener != null) {
+            mListener.onAnimationCancel(this);
+        }
+        mRunning = false;
+    }
+
+    @Override
+    public void onAnimationEnd(Animator animation) {
+        if (mListener != null) {
+            mListener.onAnimationEnd(this);
+        }
+        mRunning = false;
+    }
+
+    @Override
+    public void onAnimationRepeat(Animator animation) {
+        if (mListener != null) {
+            mListener.onAnimationRepeat(this);
+        }
+    }
+
+    @Override
+    public void onAnimationStart(Animator animation) {
+        if (mListener != null) {
+            mListener.onAnimationStart(this);
+        }
+        mRunning = true;
+    }
+
+    @Override
+    public boolean isRunning() {
+        return mRunning;
+    }
+
+    @Override
+    public boolean isStarted() {
+        return mViewPropertyAnimator != null;
+    }
+
+    @Override
+    public void removeAllListeners() {
+        mListener = null;
+    }
+
+    @Override
+    public void removeListener(Animator.AnimatorListener listener) {
+        if (mListener == listener) {
+            mListener = null;
+        } else {
+            throw new RuntimeException("Removing listener that wasn't set");
+        }
+    }
+
+    @Override
+    public Animator setDuration(long duration) {
+        mPropertiesToSet.add(Properties.DURATION);
+        mDuration = duration;
+        return this;
+    }
+
+    @Override
+    public void setInterpolator(TimeInterpolator value) {
+        mPropertiesToSet.add(Properties.INTERPOLATOR);
+        mInterpolator = value;
+    }
+
+    @Override
+    public void setStartDelay(long startDelay) {
+        mPropertiesToSet.add(Properties.START_DELAY);
+        mStartDelay = startDelay;
+    }
+
+    @Override
+    public void setTarget(Object target) {
+        throw new RuntimeException("Not implemented");
+    }
+
+    @Override
+    public void setupEndValues() {
+
+    }
+
+    @Override
+    public void setupStartValues() {
+    }
+
+    @Override
+    public void start() {
+        mViewPropertyAnimator = mTarget.animate();
+        if (mPropertiesToSet.contains(Properties.TRANSLATION_X)) {
+            mViewPropertyAnimator.translationX(mTranslationX);
+        }
+        if (mPropertiesToSet.contains(Properties.TRANSLATION_Y)) {
+            mViewPropertyAnimator.translationY(mTranslationY);
+        }
+        if (mPropertiesToSet.contains(Properties.SCALE_X)) {
+            mViewPropertyAnimator.scaleX(mScaleX);
+        }
+        if (mPropertiesToSet.contains(Properties.ROTATION_Y)) {
+            mViewPropertyAnimator.rotationY(mRotationY);
+        }
+        if (mPropertiesToSet.contains(Properties.SCALE_Y)) {
+            mViewPropertyAnimator.scaleY(mScaleY);
+        }
+        if (mPropertiesToSet.contains(Properties.ALPHA)) {
+            mViewPropertyAnimator.alpha(mAlpha);
+        }
+        if (mPropertiesToSet.contains(Properties.START_DELAY)) {
+            mViewPropertyAnimator.setStartDelay(mStartDelay);
+        }
+        if (mPropertiesToSet.contains(Properties.DURATION)) {
+            mViewPropertyAnimator.setDuration(mDuration);
+        }
+        if (mPropertiesToSet.contains(Properties.INTERPOLATOR)) {
+            mViewPropertyAnimator.setInterpolator(mInterpolator);
+        }
+        mViewPropertyAnimator.setListener(this);
+        mViewPropertyAnimator.start();
+    }
+
+    public LauncherViewPropertyAnimator translationX(float value) {
+        mPropertiesToSet.add(Properties.TRANSLATION_X);
+        mTranslationX = value;
+        return this;
+    }
+
+    public LauncherViewPropertyAnimator translationY(float value) {
+        mPropertiesToSet.add(Properties.TRANSLATION_Y);
+        mTranslationY = value;
+        return this;
+    }
+
+    public LauncherViewPropertyAnimator scaleX(float value) {
+        mPropertiesToSet.add(Properties.SCALE_X);
+        mScaleX = value;
+        return this;
+    }
+
+    public LauncherViewPropertyAnimator scaleY(float value) {
+        mPropertiesToSet.add(Properties.SCALE_Y);
+        mScaleY = value;
+        return this;
+    }
+
+    public LauncherViewPropertyAnimator rotationY(float value) {
+        mPropertiesToSet.add(Properties.ROTATION_Y);
+        mRotationY = value;
+        return this;
+    }
+
+    public LauncherViewPropertyAnimator alpha(float value) {
+        mPropertiesToSet.add(Properties.ALPHA);
+        mAlpha = value;
+        return this;
+    }
+}