transition/src/android/support/transition/ChangeBounds.java - platform/frameworks/support - Git at Google

 /*
  * Copyright (C) 2016 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.support.transition;

 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.ObjectAnimator;
 import android.animation.PropertyValuesHolder;
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Path;
 import android.graphics.PointF;
 import android.graphics.Rect;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.v4.view.ViewCompat;
 import android.util.AttributeSet;
 import android.util.Property;
 import android.view.View;
 import android.view.ViewGroup;

 import java.util.Map;

 /**
  * This transition captures the layout bounds of target views before and after
  * the scene change and animates those changes during the transition.
  *
  * <p>A ChangeBounds transition can be described in a resource file by using the
  * tag <code>changeBounds</code>, along with the other standard attributes of Transition.</p>
  */
 public class ChangeBounds extends Transition {

     private static final String PROPNAME_BOUNDS = "android:changeBounds:bounds";
     private static final String PROPNAME_PARENT = "android:changeBounds:parent";
     private static final String PROPNAME_WINDOW_X = "android:changeBounds:windowX";
     private static final String PROPNAME_WINDOW_Y = "android:changeBounds:windowY";
     private static final String[] sTransitionProperties = {
             PROPNAME_BOUNDS,
             PROPNAME_PARENT,
             PROPNAME_WINDOW_X,
             PROPNAME_WINDOW_Y
     };

     private static final Property<Drawable, PointF> DRAWABLE_ORIGIN_PROPERTY =
             new Property<Drawable, PointF>(PointF.class, "boundsOrigin") {
                 private Rect mBounds = new Rect();

                 @Override
                 public void set(Drawable object, PointF value) {
                     object.copyBounds(mBounds);
                     mBounds.offsetTo(Math.round(value.x), Math.round(value.y));
                     object.setBounds(mBounds);
                 }

                 @Override
                 public PointF get(Drawable object) {
                     object.copyBounds(mBounds);
                     return new PointF(mBounds.left, mBounds.top);
                 }
             };

     private int[] mTempLocation = new int[2];
     private boolean mResizeClip = false;
     private boolean mReparent = false;

     private static RectEvaluator sRectEvaluator = new RectEvaluator();

     public ChangeBounds() {
     }

     public ChangeBounds(Context context, AttributeSet attrs) {
         super(context, attrs);
     }

     @Nullable
     @Override
     public String[] getTransitionProperties() {
         return sTransitionProperties;
     }

     /**
      * When <code>resizeClip</code> is true, ChangeBounds resizes the view using the clipBounds
      * instead of changing the dimensions of the view during the animation. When
      * <code>resizeClip</code> is false, ChangeBounds resizes the View by changing its dimensions.
      *
      * <p>When resizeClip is set to true, the clip bounds is modified by ChangeBounds. Therefore,
      * {@link android.transition.ChangeClipBounds} is not compatible with ChangeBounds
      * in this mode.</p>
      *
      * @param resizeClip Used to indicate whether the view bounds should be modified or the
      *                   clip bounds should be modified by ChangeBounds.
      * @see android.view.View#setClipBounds(android.graphics.Rect)
      */
     public void setResizeClip(boolean resizeClip) {
         mResizeClip = resizeClip;
     }

     private void captureValues(TransitionValues values) {
         View view = values.view;

         if (ViewCompat.isLaidOut(view) || view.getWidth() != 0 || view.getHeight() != 0) {
             values.values.put(PROPNAME_BOUNDS, new Rect(view.getLeft(), view.getTop(),
                     view.getRight(), view.getBottom()));
             values.values.put(PROPNAME_PARENT, values.view.getParent());
             if (mReparent) {
                 values.view.getLocationInWindow(mTempLocation);
                 values.values.put(PROPNAME_WINDOW_X, mTempLocation[0]);
                 values.values.put(PROPNAME_WINDOW_Y, mTempLocation[1]);
             }
         }
     }

     @Override
     public void captureStartValues(@NonNull TransitionValues transitionValues) {
         captureValues(transitionValues);
     }

     @Override
     public void captureEndValues(@NonNull TransitionValues transitionValues) {
         captureValues(transitionValues);
     }

     private boolean parentMatches(View startParent, View endParent) {
         boolean parentMatches = true;
         if (mReparent) {
             TransitionValues endValues = getMatchedTransitionValues(startParent, true);
             if (endValues == null) {
                 parentMatches = startParent == endParent;
             } else {
                 parentMatches = endParent == endValues.view;
             }
         }
         return parentMatches;
     }

     @Override
     @Nullable
     public Animator createAnimator(@NonNull final ViewGroup sceneRoot,
             @Nullable TransitionValues startValues, @Nullable TransitionValues endValues) {
         if (startValues == null || endValues == null) {
             return null;
         }
         Map<String, Object> startParentVals = startValues.values;
         Map<String, Object> endParentVals = endValues.values;
         ViewGroup startParent = (ViewGroup) startParentVals.get(PROPNAME_PARENT);
         ViewGroup endParent = (ViewGroup) endParentVals.get(PROPNAME_PARENT);
         if (startParent == null || endParent == null) {
             return null;
         }
         final View view = endValues.view;
         if (parentMatches(startParent, endParent)) {
             Rect startBounds = (Rect) startValues.values.get(PROPNAME_BOUNDS);
             Rect endBounds = (Rect) endValues.values.get(PROPNAME_BOUNDS);
             int startLeft = startBounds.left;
             int endLeft = endBounds.left;
             int startTop = startBounds.top;
             int endTop = endBounds.top;
             int startRight = startBounds.right;
             int endRight = endBounds.right;
             int startBottom = startBounds.bottom;
             int endBottom = endBounds.bottom;
             int startWidth = startRight - startLeft;
             int startHeight = startBottom - startTop;
             int endWidth = endRight - endLeft;
             int endHeight = endBottom - endTop;
             int numChanges = 0;
             if (startWidth != 0 && startHeight != 0 && endWidth != 0 && endHeight != 0) {
                 if (startLeft != endLeft) {
                     ++numChanges;
                 }
                 if (startTop != endTop) {
                     ++numChanges;
                 }
                 if (startRight != endRight) {
                     ++numChanges;
                 }
                 if (startBottom != endBottom) {
                     ++numChanges;
                 }
             }
             if (numChanges > 0) {
                 if (!mResizeClip) {
                     Animator anim;
                     if (startWidth == endWidth && startHeight == endHeight) {
                         view.offsetLeftAndRight(startLeft - view.getLeft());
                         view.offsetTopAndBottom(startTop - view.getTop());
                         Path positionPath = getPathMotion().getPath(0, 0, endLeft - startLeft,
                                 endTop - startTop);
                         anim = ObjectAnimatorUtils.ofInt(view, new HorizontalOffsetProperty(),
                                 new VerticalOffsetProperty(), positionPath);
                     } else {
                         if (startLeft != endLeft) view.setLeft(startLeft);
                         if (startTop != endTop) view.setTop(startTop);
                         if (startRight != endRight) view.setRight(startRight);
                         if (startBottom != endBottom) view.setBottom(startBottom);
                         ObjectAnimator topLeftAnimator = null;
                         if (startLeft != endLeft || startTop != endTop) {
                             Path topLeftPath = getPathMotion().getPath(startLeft, startTop,
                                     endLeft, endTop);
                             topLeftAnimator = ObjectAnimatorUtils
                                     .ofInt(view, "left", "top", topLeftPath);
                         }
                         ObjectAnimator bottomRightAnimator = null;
                         if (startRight != endRight || startBottom != endBottom) {
                             Path bottomRightPath = getPathMotion().getPath(startRight, startBottom,
                                     endRight, endBottom);
                             bottomRightAnimator = ObjectAnimatorUtils.ofInt(view, "right", "bottom",
                                     bottomRightPath);
                         }
                         anim = TransitionUtils.mergeAnimators(topLeftAnimator,
                                 bottomRightAnimator);
                     }
                     if (view.getParent() instanceof ViewGroup) {
                         final ViewGroup parent = (ViewGroup) view.getParent();
                         ViewGroupUtils.suppressLayout(parent, true);
                         TransitionListener transitionListener = new TransitionListenerAdapter() {
                             boolean mCanceled = false;

                             @Override
                             public void onTransitionCancel(@NonNull Transition transition) {
                                 ViewGroupUtils.suppressLayout(parent, false);
                                 mCanceled = true;
                             }

                             @Override
                             public void onTransitionEnd(@NonNull Transition transition) {
                                 if (!mCanceled) {
                                     ViewGroupUtils.suppressLayout(parent, false);
                                 }
                             }

                             @Override
                             public void onTransitionPause(@NonNull Transition transition) {
                                 ViewGroupUtils.suppressLayout(parent, false);
                             }

                             @Override
                             public void onTransitionResume(@NonNull Transition transition) {
                                 ViewGroupUtils.suppressLayout(parent, true);
                             }
                         };
                         addListener(transitionListener);
                     }
                     return anim;
                 } else {
                     if (startWidth != endWidth) {
                         view.setRight(endLeft + Math.max(startWidth, endWidth));
                     }
                     if (startHeight != endHeight) {
                         view.setBottom(endTop + Math.max(startHeight, endHeight));
                     }
                     // TODO: don't clobber TX/TY
                     if (startLeft != endLeft) {
                         view.setTranslationX(startLeft - endLeft);
                     }
                     if (startTop != endTop) {
                         view.setTranslationY(startTop - endTop);
                     }
                     // Animate location with translationX/Y and size with clip bounds
                     float transXDelta = endLeft - startLeft;
                     float transYDelta = endTop - startTop;
                     int widthDelta = endWidth - startWidth;
                     int heightDelta = endHeight - startHeight;
                     ObjectAnimator translationAnimator = null;
                     if (transXDelta != 0 || transYDelta != 0) {
                         Path topLeftPath = getPathMotion().getPath(0, 0, transXDelta, transYDelta);
                         translationAnimator = ObjectAnimatorUtils.ofFloat(view, View.TRANSLATION_X,
                                 View.TRANSLATION_Y, topLeftPath);
                     }
                     ObjectAnimator clipAnimator = null;
                     if (widthDelta != 0 || heightDelta != 0) {
                         Rect tempStartBounds = new Rect(0, 0, startWidth, startHeight);
                         Rect tempEndBounds = new Rect(0, 0, endWidth, endHeight);
                         clipAnimator = ObjectAnimator.ofObject(view, ViewUtils.CLIP_BOUNDS,
                                 sRectEvaluator, tempStartBounds, tempEndBounds);
                     }
                     Animator anim = TransitionUtils.mergeAnimators(translationAnimator,
                             clipAnimator);
                     if (view.getParent() instanceof ViewGroup) {
                         final ViewGroup parent = (ViewGroup) view.getParent();
                         ViewGroupUtils.suppressLayout(parent, true);
                         TransitionListener transitionListener = new TransitionListenerAdapter() {
                             boolean mCanceled = false;

                             @Override
                             public void onTransitionCancel(@NonNull Transition transition) {
                                 ViewGroupUtils.suppressLayout(parent, false);
                                 mCanceled = true;
                             }

                             @Override
                             public void onTransitionEnd(@NonNull Transition transition) {
                                 if (!mCanceled) {
                                     ViewGroupUtils.suppressLayout(parent, false);
                                 }
                             }

                             @Override
                             public void onTransitionPause(@NonNull Transition transition) {
                                 ViewGroupUtils.suppressLayout(parent, false);
                             }

                             @Override
                             public void onTransitionResume(@NonNull Transition transition) {
                                 ViewGroupUtils.suppressLayout(parent, true);
                             }
                         };
                         addListener(transitionListener);
                     }
                     anim.addListener(new AnimatorListenerAdapter() {
                         @Override
                         public void onAnimationEnd(Animator animation) {
                             ViewCompat.setClipBounds(view, null);
                         }
                     });
                     return anim;
                 }
             }
         } else {
             int startX = (Integer) startValues.values.get(PROPNAME_WINDOW_X);
             int startY = (Integer) startValues.values.get(PROPNAME_WINDOW_Y);
             int endX = (Integer) endValues.values.get(PROPNAME_WINDOW_X);
             int endY = (Integer) endValues.values.get(PROPNAME_WINDOW_Y);
             // TODO: also handle size changes: check bounds and animate size changes
             if (startX != endX || startY != endY) {
                 sceneRoot.getLocationInWindow(mTempLocation);
                 Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(),
                         Bitmap.Config.ARGB_8888);
                 Canvas canvas = new Canvas(bitmap);
                 view.draw(canvas);
                 @SuppressWarnings("deprecation")
                 final BitmapDrawable drawable = new BitmapDrawable(bitmap);
                 final float transitionAlpha = ViewUtils.getTransitionAlpha(view);
                 ViewUtils.setTransitionAlpha(view, 0);
                 ViewUtils.getOverlay(sceneRoot).add(drawable);
                 Path topLeftPath = getPathMotion().getPath(startX - mTempLocation[0],
                         startY - mTempLocation[1], endX - mTempLocation[0],
                         endY - mTempLocation[1]);
                 PropertyValuesHolder origin = PropertyValuesHolderUtils.ofPointF(
                         DRAWABLE_ORIGIN_PROPERTY, topLeftPath);
                 ObjectAnimator anim = ObjectAnimator.ofPropertyValuesHolder(drawable, origin);
                 anim.addListener(new AnimatorListenerAdapter() {
                     @Override
                     public void onAnimationEnd(Animator animation) {
                         ViewUtils.getOverlay(sceneRoot).remove(drawable);
                         ViewUtils.setTransitionAlpha(view, transitionAlpha);
                     }
                 });
                 return anim;
             }
         }
         return null;
     }

     private abstract static class OffsetProperty extends Property<View, Integer> {
         int mPreviousValue;

         OffsetProperty(String name) {
             super(Integer.class, name);
         }

         @Override
         public void set(View view, Integer value) {
             int offset = value - mPreviousValue;
             offsetBy(view, offset);
             mPreviousValue = value;
         }

         @Override
         public Integer get(View object) {
             return null;
         }

         protected abstract void offsetBy(View view, int by);
     }

     private static class HorizontalOffsetProperty extends OffsetProperty {
         HorizontalOffsetProperty() {
             super("offsetLeftAndRight");
         }

         @Override
         protected void offsetBy(View view, int by) {
             ViewCompat.offsetLeftAndRight(view, by);
         }
     }

     private static class VerticalOffsetProperty extends OffsetProperty {
         VerticalOffsetProperty() {
             super("offsetTopAndBottom");
         }

         @Override
         protected void offsetBy(View view, int by) {
             ViewCompat.offsetTopAndBottom(view, by);
         }
     }

 }
	/*
	* Copyright (C) 2016 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.support.transition;

	import android.animation.Animator;
	import android.animation.AnimatorListenerAdapter;
	import android.animation.ObjectAnimator;
	import android.animation.PropertyValuesHolder;
	import android.content.Context;
	import android.graphics.Bitmap;
	import android.graphics.Canvas;
	import android.graphics.Path;
	import android.graphics.PointF;
	import android.graphics.Rect;
	import android.graphics.drawable.BitmapDrawable;
	import android.graphics.drawable.Drawable;
	import android.support.annotation.NonNull;
	import android.support.annotation.Nullable;
	import android.support.v4.view.ViewCompat;
	import android.util.AttributeSet;
	import android.util.Property;
	import android.view.View;
	import android.view.ViewGroup;

	import java.util.Map;

	/**
	* This transition captures the layout bounds of target views before and after
	* the scene change and animates those changes during the transition.
	*
	* <p>A ChangeBounds transition can be described in a resource file by using the
	* tag <code>changeBounds</code>, along with the other standard attributes of Transition.</p>
	*/
	public class ChangeBounds extends Transition {

	private static final String PROPNAME_BOUNDS = "android:changeBounds:bounds";
	private static final String PROPNAME_PARENT = "android:changeBounds:parent";
	private static final String PROPNAME_WINDOW_X = "android:changeBounds:windowX";
	private static final String PROPNAME_WINDOW_Y = "android:changeBounds:windowY";
	private static final String[] sTransitionProperties = {
	PROPNAME_BOUNDS,
	PROPNAME_PARENT,
	PROPNAME_WINDOW_X,
	PROPNAME_WINDOW_Y
	};

	private static final Property<Drawable, PointF> DRAWABLE_ORIGIN_PROPERTY =
	new Property<Drawable, PointF>(PointF.class, "boundsOrigin") {
	private Rect mBounds = new Rect();

	@Override
	public void set(Drawable object, PointF value) {
	object.copyBounds(mBounds);
	mBounds.offsetTo(Math.round(value.x), Math.round(value.y));
	object.setBounds(mBounds);
	}

	@Override
	public PointF get(Drawable object) {
	object.copyBounds(mBounds);
	return new PointF(mBounds.left, mBounds.top);
	}
	};

	private int[] mTempLocation = new int[2];
	private boolean mResizeClip = false;
	private boolean mReparent = false;

	private static RectEvaluator sRectEvaluator = new RectEvaluator();

	public ChangeBounds() {
	}

	public ChangeBounds(Context context, AttributeSet attrs) {
	super(context, attrs);
	}

	@Nullable
	@Override
	public String[] getTransitionProperties() {
	return sTransitionProperties;
	}

	/**
	* When <code>resizeClip</code> is true, ChangeBounds resizes the view using the clipBounds
	* instead of changing the dimensions of the view during the animation. When
	* <code>resizeClip</code> is false, ChangeBounds resizes the View by changing its dimensions.
	*
	* <p>When resizeClip is set to true, the clip bounds is modified by ChangeBounds. Therefore,
	* {@link android.transition.ChangeClipBounds} is not compatible with ChangeBounds
	* in this mode.</p>
	*
	* @param resizeClip Used to indicate whether the view bounds should be modified or the
	* clip bounds should be modified by ChangeBounds.
	* @see android.view.View#setClipBounds(android.graphics.Rect)
	*/
	public void setResizeClip(boolean resizeClip) {
	mResizeClip = resizeClip;
	}

	private void captureValues(TransitionValues values) {
	View view = values.view;

	if (ViewCompat.isLaidOut(view) \|\| view.getWidth() != 0 \|\| view.getHeight() != 0) {
	values.values.put(PROPNAME_BOUNDS, new Rect(view.getLeft(), view.getTop(),
	view.getRight(), view.getBottom()));
	values.values.put(PROPNAME_PARENT, values.view.getParent());
	if (mReparent) {
	values.view.getLocationInWindow(mTempLocation);
	values.values.put(PROPNAME_WINDOW_X, mTempLocation[0]);
	values.values.put(PROPNAME_WINDOW_Y, mTempLocation[1]);
	}
	}
	}

	@Override
	public void captureStartValues(@NonNull TransitionValues transitionValues) {
	captureValues(transitionValues);
	}

	@Override
	public void captureEndValues(@NonNull TransitionValues transitionValues) {
	captureValues(transitionValues);
	}

	private boolean parentMatches(View startParent, View endParent) {
	boolean parentMatches = true;
	if (mReparent) {
	TransitionValues endValues = getMatchedTransitionValues(startParent, true);
	if (endValues == null) {
	parentMatches = startParent == endParent;
	} else {
	parentMatches = endParent == endValues.view;
	}
	}
	return parentMatches;
	}

	@Override
	@Nullable
	public Animator createAnimator(@NonNull final ViewGroup sceneRoot,
	@Nullable TransitionValues startValues, @Nullable TransitionValues endValues) {
	if (startValues == null \|\| endValues == null) {
	return null;
	}
	Map<String, Object> startParentVals = startValues.values;
	Map<String, Object> endParentVals = endValues.values;
	ViewGroup startParent = (ViewGroup) startParentVals.get(PROPNAME_PARENT);
	ViewGroup endParent = (ViewGroup) endParentVals.get(PROPNAME_PARENT);
	if (startParent == null \|\| endParent == null) {
	return null;
	}
	final View view = endValues.view;
	if (parentMatches(startParent, endParent)) {
	Rect startBounds = (Rect) startValues.values.get(PROPNAME_BOUNDS);
	Rect endBounds = (Rect) endValues.values.get(PROPNAME_BOUNDS);
	int startLeft = startBounds.left;
	int endLeft = endBounds.left;
	int startTop = startBounds.top;
	int endTop = endBounds.top;
	int startRight = startBounds.right;
	int endRight = endBounds.right;
	int startBottom = startBounds.bottom;
	int endBottom = endBounds.bottom;
	int startWidth = startRight - startLeft;
	int startHeight = startBottom - startTop;
	int endWidth = endRight - endLeft;
	int endHeight = endBottom - endTop;
	int numChanges = 0;
	if (startWidth != 0 && startHeight != 0 && endWidth != 0 && endHeight != 0) {
	if (startLeft != endLeft) {
	++numChanges;
	}
	if (startTop != endTop) {
	++numChanges;
	}
	if (startRight != endRight) {
	++numChanges;
	}
	if (startBottom != endBottom) {
	++numChanges;
	}
	}
	if (numChanges > 0) {
	if (!mResizeClip) {
	Animator anim;
	if (startWidth == endWidth && startHeight == endHeight) {
	view.offsetLeftAndRight(startLeft - view.getLeft());
	view.offsetTopAndBottom(startTop - view.getTop());
	Path positionPath = getPathMotion().getPath(0, 0, endLeft - startLeft,
	endTop - startTop);
	anim = ObjectAnimatorUtils.ofInt(view, new HorizontalOffsetProperty(),
	new VerticalOffsetProperty(), positionPath);
	} else {
	if (startLeft != endLeft) view.setLeft(startLeft);
	if (startTop != endTop) view.setTop(startTop);
	if (startRight != endRight) view.setRight(startRight);
	if (startBottom != endBottom) view.setBottom(startBottom);
	ObjectAnimator topLeftAnimator = null;
	if (startLeft != endLeft \|\| startTop != endTop) {
	Path topLeftPath = getPathMotion().getPath(startLeft, startTop,
	endLeft, endTop);
	topLeftAnimator = ObjectAnimatorUtils
	.ofInt(view, "left", "top", topLeftPath);
	}
	ObjectAnimator bottomRightAnimator = null;
	if (startRight != endRight \|\| startBottom != endBottom) {
	Path bottomRightPath = getPathMotion().getPath(startRight, startBottom,
	endRight, endBottom);
	bottomRightAnimator = ObjectAnimatorUtils.ofInt(view, "right", "bottom",
	bottomRightPath);
	}
	anim = TransitionUtils.mergeAnimators(topLeftAnimator,
	bottomRightAnimator);
	}
	if (view.getParent() instanceof ViewGroup) {
	final ViewGroup parent = (ViewGroup) view.getParent();
	ViewGroupUtils.suppressLayout(parent, true);
	TransitionListener transitionListener = new TransitionListenerAdapter() {
	boolean mCanceled = false;

	@Override
	public void onTransitionCancel(@NonNull Transition transition) {
	ViewGroupUtils.suppressLayout(parent, false);
	mCanceled = true;
	}

	@Override
	public void onTransitionEnd(@NonNull Transition transition) {
	if (!mCanceled) {
	ViewGroupUtils.suppressLayout(parent, false);
	}
	}

	@Override
	public void onTransitionPause(@NonNull Transition transition) {
	ViewGroupUtils.suppressLayout(parent, false);
	}

	@Override
	public void onTransitionResume(@NonNull Transition transition) {
	ViewGroupUtils.suppressLayout(parent, true);
	}
	};
	addListener(transitionListener);
	}
	return anim;
	} else {
	if (startWidth != endWidth) {
	view.setRight(endLeft + Math.max(startWidth, endWidth));
	}
	if (startHeight != endHeight) {
	view.setBottom(endTop + Math.max(startHeight, endHeight));
	}
	// TODO: don't clobber TX/TY
	if (startLeft != endLeft) {
	view.setTranslationX(startLeft - endLeft);
	}
	if (startTop != endTop) {
	view.setTranslationY(startTop - endTop);
	}
	// Animate location with translationX/Y and size with clip bounds
	float transXDelta = endLeft - startLeft;
	float transYDelta = endTop - startTop;
	int widthDelta = endWidth - startWidth;
	int heightDelta = endHeight - startHeight;
	ObjectAnimator translationAnimator = null;
	if (transXDelta != 0 \|\| transYDelta != 0) {
	Path topLeftPath = getPathMotion().getPath(0, 0, transXDelta, transYDelta);
	translationAnimator = ObjectAnimatorUtils.ofFloat(view, View.TRANSLATION_X,
	View.TRANSLATION_Y, topLeftPath);
	}
	ObjectAnimator clipAnimator = null;
	if (widthDelta != 0 \|\| heightDelta != 0) {
	Rect tempStartBounds = new Rect(0, 0, startWidth, startHeight);
	Rect tempEndBounds = new Rect(0, 0, endWidth, endHeight);
	clipAnimator = ObjectAnimator.ofObject(view, ViewUtils.CLIP_BOUNDS,
	sRectEvaluator, tempStartBounds, tempEndBounds);
	}
	Animator anim = TransitionUtils.mergeAnimators(translationAnimator,
	clipAnimator);
	if (view.getParent() instanceof ViewGroup) {
	final ViewGroup parent = (ViewGroup) view.getParent();
	ViewGroupUtils.suppressLayout(parent, true);
	TransitionListener transitionListener = new TransitionListenerAdapter() {
	boolean mCanceled = false;

	@Override
	public void onTransitionCancel(@NonNull Transition transition) {
	ViewGroupUtils.suppressLayout(parent, false);
	mCanceled = true;
	}

	@Override
	public void onTransitionEnd(@NonNull Transition transition) {
	if (!mCanceled) {
	ViewGroupUtils.suppressLayout(parent, false);
	}
	}

	@Override
	public void onTransitionPause(@NonNull Transition transition) {
	ViewGroupUtils.suppressLayout(parent, false);
	}

	@Override
	public void onTransitionResume(@NonNull Transition transition) {
	ViewGroupUtils.suppressLayout(parent, true);
	}
	};
	addListener(transitionListener);
	}
	anim.addListener(new AnimatorListenerAdapter() {
	@Override
	public void onAnimationEnd(Animator animation) {
	ViewCompat.setClipBounds(view, null);
	}
	});
	return anim;
	}
	}
	} else {
	int startX = (Integer) startValues.values.get(PROPNAME_WINDOW_X);
	int startY = (Integer) startValues.values.get(PROPNAME_WINDOW_Y);
	int endX = (Integer) endValues.values.get(PROPNAME_WINDOW_X);
	int endY = (Integer) endValues.values.get(PROPNAME_WINDOW_Y);
	// TODO: also handle size changes: check bounds and animate size changes
	if (startX != endX \|\| startY != endY) {
	sceneRoot.getLocationInWindow(mTempLocation);
	Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(),
	Bitmap.Config.ARGB_8888);
	Canvas canvas = new Canvas(bitmap);
	view.draw(canvas);
	@SuppressWarnings("deprecation")
	final BitmapDrawable drawable = new BitmapDrawable(bitmap);
	final float transitionAlpha = ViewUtils.getTransitionAlpha(view);
	ViewUtils.setTransitionAlpha(view, 0);
	ViewUtils.getOverlay(sceneRoot).add(drawable);
	Path topLeftPath = getPathMotion().getPath(startX - mTempLocation[0],
	startY - mTempLocation[1], endX - mTempLocation[0],
	endY - mTempLocation[1]);
	PropertyValuesHolder origin = PropertyValuesHolderUtils.ofPointF(
	DRAWABLE_ORIGIN_PROPERTY, topLeftPath);
	ObjectAnimator anim = ObjectAnimator.ofPropertyValuesHolder(drawable, origin);
	anim.addListener(new AnimatorListenerAdapter() {
	@Override
	public void onAnimationEnd(Animator animation) {
	ViewUtils.getOverlay(sceneRoot).remove(drawable);
	ViewUtils.setTransitionAlpha(view, transitionAlpha);
	}
	});
	return anim;
	}
	}
	return null;
	}

	private abstract static class OffsetProperty extends Property<View, Integer> {
	int mPreviousValue;

	OffsetProperty(String name) {
	super(Integer.class, name);
	}

	@Override
	public void set(View view, Integer value) {
	int offset = value - mPreviousValue;
	offsetBy(view, offset);
	mPreviousValue = value;
	}

	@Override
	public Integer get(View object) {
	return null;
	}

	protected abstract void offsetBy(View view, int by);
	}

	private static class HorizontalOffsetProperty extends OffsetProperty {
	HorizontalOffsetProperty() {
	super("offsetLeftAndRight");
	}

	@Override
	protected void offsetBy(View view, int by) {
	ViewCompat.offsetLeftAndRight(view, by);
	}
	}

	private static class VerticalOffsetProperty extends OffsetProperty {
	VerticalOffsetProperty() {
	super("offsetTopAndBottom");
	}

	@Override
	protected void offsetBy(View view, int by) {
	ViewCompat.offsetTopAndBottom(view, by);
	}
	}

	}