| /* |
| * Copyright (C) 2014 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.transition; |
| |
| import android.animation.Animator; |
| import android.animation.AnimatorListenerAdapter; |
| import android.animation.ObjectAnimator; |
| import android.animation.ValueAnimator; |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.graphics.Matrix; |
| import android.util.AttributeSet; |
| import android.util.Property; |
| import android.view.GhostView; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import com.android.internal.R; |
| |
| /** |
| * This Transition captures scale and rotation for Views before and after the |
| * scene change and animates those changes during the transition. |
| * |
| * A change in parent is handled as well by capturing the transforms from |
| * the parent before and after the scene change and animating those during the |
| * transition. |
| */ |
| public class ChangeTransform extends Transition { |
| |
| private static final String TAG = "ChangeTransform"; |
| |
| private static final String PROPNAME_MATRIX = "android:changeTransform:matrix"; |
| private static final String PROPNAME_TRANSFORMS = "android:changeTransform:transforms"; |
| private static final String PROPNAME_PARENT = "android:changeTransform:parent"; |
| private static final String PROPNAME_PARENT_MATRIX = "android:changeTransform:parentMatrix"; |
| private static final String PROPNAME_INTERMEDIATE_PARENT_MATRIX = |
| "android:changeTransform:intermediateParentMatrix"; |
| private static final String PROPNAME_INTERMEDIATE_MATRIX = |
| "android:changeTransform:intermediateMatrix"; |
| |
| private static final String[] sTransitionProperties = { |
| PROPNAME_MATRIX, |
| PROPNAME_TRANSFORMS, |
| PROPNAME_PARENT_MATRIX, |
| }; |
| |
| private static final Property<View, Matrix> ANIMATION_MATRIX_PROPERTY = |
| new Property<View, Matrix>(Matrix.class, "animationMatrix") { |
| @Override |
| public Matrix get(View object) { |
| return null; |
| } |
| |
| @Override |
| public void set(View object, Matrix value) { |
| object.setAnimationMatrix(value); |
| } |
| }; |
| |
| private boolean mUseOverlay = true; |
| private boolean mReparent = true; |
| private Matrix mTempMatrix = new Matrix(); |
| |
| public ChangeTransform() {} |
| |
| public ChangeTransform(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.ChangeTransform); |
| mUseOverlay = a.getBoolean(R.styleable.ChangeTransform_reparentWithOverlay, true); |
| mReparent = a.getBoolean(R.styleable.ChangeTransform_reparent, true); |
| a.recycle(); |
| } |
| |
| /** |
| * Returns whether changes to parent should use an overlay or not. When the parent |
| * change doesn't use an overlay, it affects the transforms of the child. The |
| * default value is <code>true</code>. |
| * |
| * <p>Note: when Overlays are not used when a parent changes, a view can be clipped when |
| * it moves outside the bounds of its parent. Setting |
| * {@link android.view.ViewGroup#setClipChildren(boolean)} and |
| * {@link android.view.ViewGroup#setClipToPadding(boolean)} can help. Also, when |
| * Overlays are not used and the parent is animating its location, the position of the |
| * child view will be relative to its parent's final position, so it may appear to "jump" |
| * at the beginning.</p> |
| * |
| * @return <code>true</code> when a changed parent should execute the transition |
| * inside the scene root's overlay or <code>false</code> if a parent change only |
| * affects the transform of the transitioning view. |
| * @attr ref android.R.styleable#ChangeTransform_reparentWithOverlay |
| */ |
| public boolean getReparentWithOverlay() { |
| return mUseOverlay; |
| } |
| |
| /** |
| * Sets whether changes to parent should use an overlay or not. When the parent |
| * change doesn't use an overlay, it affects the transforms of the child. The |
| * default value is <code>true</code>. |
| * |
| * <p>Note: when Overlays are not used when a parent changes, a view can be clipped when |
| * it moves outside the bounds of its parent. Setting |
| * {@link android.view.ViewGroup#setClipChildren(boolean)} and |
| * {@link android.view.ViewGroup#setClipToPadding(boolean)} can help. Also, when |
| * Overlays are not used and the parent is animating its location, the position of the |
| * child view will be relative to its parent's final position, so it may appear to "jump" |
| * at the beginning.</p> |
| * |
| * @return <code>true</code> when a changed parent should execute the transition |
| * inside the scene root's overlay or <code>false</code> if a parent change only |
| * affects the transform of the transitioning view. |
| * @attr ref android.R.styleable#ChangeTransform_reparentWithOverlay |
| */ |
| public void setReparentWithOverlay(boolean reparentWithOverlay) { |
| mUseOverlay = reparentWithOverlay; |
| } |
| |
| /** |
| * Returns whether parent changes will be tracked by the ChangeTransform. If parent |
| * changes are tracked, then the transform will adjust to the transforms of the |
| * different parents. If they aren't tracked, only the transforms of the transitioning |
| * view will be tracked. Default is true. |
| * |
| * @return whether parent changes will be tracked by the ChangeTransform. |
| * @attr ref android.R.styleable#ChangeTransform_reparent |
| */ |
| public boolean getReparent() { |
| return mReparent; |
| } |
| |
| /** |
| * Sets whether parent changes will be tracked by the ChangeTransform. If parent |
| * changes are tracked, then the transform will adjust to the transforms of the |
| * different parents. If they aren't tracked, only the transforms of the transitioning |
| * view will be tracked. Default is true. |
| * |
| * @param reparent Set to true to track parent changes or false to only track changes |
| * of the transitioning view without considering the parent change. |
| * @attr ref android.R.styleable#ChangeTransform_reparent |
| */ |
| public void setReparent(boolean reparent) { |
| mReparent = reparent; |
| } |
| |
| @Override |
| public String[] getTransitionProperties() { |
| return sTransitionProperties; |
| } |
| |
| private void captureValues(TransitionValues transitionValues) { |
| View view = transitionValues.view; |
| if (view.getVisibility() == View.GONE) { |
| return; |
| } |
| transitionValues.values.put(PROPNAME_PARENT, view.getParent()); |
| Transforms transforms = new Transforms(view); |
| transitionValues.values.put(PROPNAME_TRANSFORMS, transforms); |
| Matrix matrix = view.getMatrix(); |
| if (matrix == null || matrix.isIdentity()) { |
| matrix = null; |
| } else { |
| matrix = new Matrix(matrix); |
| } |
| transitionValues.values.put(PROPNAME_MATRIX, matrix); |
| if (mReparent) { |
| Matrix parentMatrix = new Matrix(); |
| ViewGroup parent = (ViewGroup) view.getParent(); |
| parent.transformMatrixToGlobal(parentMatrix); |
| parentMatrix.preTranslate(-parent.getScrollX(), -parent.getScrollY()); |
| transitionValues.values.put(PROPNAME_PARENT_MATRIX, parentMatrix); |
| transitionValues.values.put(PROPNAME_INTERMEDIATE_MATRIX, |
| view.getTag(R.id.transitionTransform)); |
| transitionValues.values.put(PROPNAME_INTERMEDIATE_PARENT_MATRIX, |
| view.getTag(R.id.parentMatrix)); |
| } |
| return; |
| } |
| |
| @Override |
| public void captureStartValues(TransitionValues transitionValues) { |
| captureValues(transitionValues); |
| } |
| |
| @Override |
| public void captureEndValues(TransitionValues transitionValues) { |
| captureValues(transitionValues); |
| } |
| |
| @Override |
| public Animator createAnimator(ViewGroup sceneRoot, TransitionValues startValues, |
| TransitionValues endValues) { |
| if (startValues == null || endValues == null || |
| !startValues.values.containsKey(PROPNAME_PARENT) || |
| !endValues.values.containsKey(PROPNAME_PARENT)) { |
| return null; |
| } |
| |
| ViewGroup startParent = (ViewGroup) startValues.values.get(PROPNAME_PARENT); |
| ViewGroup endParent = (ViewGroup) endValues.values.get(PROPNAME_PARENT); |
| boolean handleParentChange = mReparent && !parentsMatch(startParent, endParent); |
| |
| Matrix startMatrix = (Matrix) startValues.values.get(PROPNAME_INTERMEDIATE_MATRIX); |
| if (startMatrix != null) { |
| startValues.values.put(PROPNAME_MATRIX, startMatrix); |
| } |
| |
| Matrix startParentMatrix = (Matrix) |
| startValues.values.get(PROPNAME_INTERMEDIATE_PARENT_MATRIX); |
| if (startParentMatrix != null) { |
| startValues.values.put(PROPNAME_PARENT_MATRIX, startParentMatrix); |
| } |
| |
| // First handle the parent change: |
| if (handleParentChange) { |
| setMatricesForParent(startValues, endValues); |
| } |
| |
| // Next handle the normal matrix transform: |
| ObjectAnimator transformAnimator = createTransformAnimator(startValues, endValues); |
| |
| if (handleParentChange && transformAnimator != null && mUseOverlay) { |
| createGhostView(sceneRoot, startValues, endValues); |
| } |
| |
| return transformAnimator; |
| } |
| |
| private ObjectAnimator createTransformAnimator(TransitionValues startValues, |
| TransitionValues endValues) { |
| Matrix startMatrix = (Matrix) startValues.values.get(PROPNAME_MATRIX); |
| Matrix endMatrix = (Matrix) endValues.values.get(PROPNAME_MATRIX); |
| |
| if (startMatrix == null) { |
| startMatrix = Matrix.IDENTITY_MATRIX; |
| } |
| |
| if (endMatrix == null) { |
| endMatrix = Matrix.IDENTITY_MATRIX; |
| } |
| |
| if (startMatrix.equals(endMatrix)) { |
| return null; |
| } |
| |
| final Transforms transforms = (Transforms) endValues.values.get(PROPNAME_TRANSFORMS); |
| |
| // clear the transform properties so that we can use the animation matrix instead |
| final View view = endValues.view; |
| setIdentityTransforms(view); |
| |
| ObjectAnimator animator = ObjectAnimator.ofObject(view, ANIMATION_MATRIX_PROPERTY, |
| new TransitionUtils.MatrixEvaluator(), startMatrix, endMatrix); |
| |
| final Matrix finalEndMatrix = endMatrix; |
| |
| AnimatorListenerAdapter listener = new AnimatorListenerAdapter() { |
| private boolean mIsCanceled; |
| private Matrix mTempMatrix = new Matrix(); |
| |
| @Override |
| public void onAnimationCancel(Animator animation) { |
| mIsCanceled = true; |
| } |
| |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| if (!mIsCanceled) { |
| setCurrentMatrix(finalEndMatrix); |
| } |
| ANIMATION_MATRIX_PROPERTY.set(view, null); |
| transforms.restore(view); |
| } |
| |
| @Override |
| public void onAnimationPause(Animator animation) { |
| ValueAnimator animator = (ValueAnimator) animation; |
| Matrix currentMatrix = (Matrix) animator.getAnimatedValue(); |
| setCurrentMatrix(currentMatrix); |
| } |
| |
| @Override |
| public void onAnimationResume(Animator animation) { |
| setIdentityTransforms(view); |
| } |
| |
| private void setCurrentMatrix(Matrix currentMatrix) { |
| mTempMatrix.set(currentMatrix); |
| view.setTagInternal(R.id.transitionTransform, mTempMatrix); |
| transforms.restore(view); |
| } |
| }; |
| |
| animator.addListener(listener); |
| animator.addPauseListener(listener); |
| return animator; |
| } |
| |
| private boolean parentsMatch(ViewGroup startParent, ViewGroup endParent) { |
| boolean parentsMatch = false; |
| if (!isValidTarget(startParent) || !isValidTarget(endParent)) { |
| parentsMatch = startParent == endParent; |
| } else { |
| TransitionValues endValues = getMatchedTransitionValues(startParent, true); |
| if (endValues != null) { |
| parentsMatch = endParent == endValues.view; |
| } |
| } |
| return parentsMatch; |
| } |
| |
| private void createGhostView(final ViewGroup sceneRoot, TransitionValues startValues, |
| TransitionValues endValues) { |
| View view = endValues.view; |
| |
| Matrix endMatrix = (Matrix) endValues.values.get(PROPNAME_PARENT_MATRIX); |
| Matrix localEndMatrix = new Matrix(endMatrix); |
| sceneRoot.transformMatrixToLocal(localEndMatrix); |
| |
| GhostView ghostView = GhostView.addGhost(view, sceneRoot, localEndMatrix); |
| |
| Transition outerTransition = this; |
| while (outerTransition.mParent != null) { |
| outerTransition = outerTransition.mParent; |
| } |
| GhostListener listener = new GhostListener(view, ghostView, endMatrix); |
| outerTransition.addListener(listener); |
| |
| if (startValues.view != endValues.view) { |
| startValues.view.setTransitionAlpha(0); |
| } |
| view.setTransitionAlpha(1); |
| } |
| |
| private void setMatricesForParent(TransitionValues startValues, TransitionValues endValues) { |
| Matrix endParentMatrix = (Matrix) endValues.values.get(PROPNAME_PARENT_MATRIX); |
| endValues.view.setTagInternal(R.id.parentMatrix, endParentMatrix); |
| |
| Matrix toLocal = mTempMatrix; |
| toLocal.reset(); |
| endParentMatrix.invert(toLocal); |
| |
| Matrix startLocal = (Matrix) startValues.values.get(PROPNAME_MATRIX); |
| if (startLocal == null) { |
| startLocal = new Matrix(); |
| startValues.values.put(PROPNAME_MATRIX, startLocal); |
| } |
| |
| Matrix startParentMatrix = (Matrix) startValues.values.get(PROPNAME_PARENT_MATRIX); |
| startLocal.postConcat(startParentMatrix); |
| startLocal.postConcat(toLocal); |
| } |
| |
| private static void setIdentityTransforms(View view) { |
| setTransforms(view, 0, 0, 0, 1, 1, 0, 0, 0); |
| } |
| |
| private static void setTransforms(View view, float translationX, float translationY, |
| float translationZ, float scaleX, float scaleY, float rotationX, |
| float rotationY, float rotationZ) { |
| view.setTranslationX(translationX); |
| view.setTranslationY(translationY); |
| view.setTranslationZ(translationZ); |
| view.setScaleX(scaleX); |
| view.setScaleY(scaleY); |
| view.setRotationX(rotationX); |
| view.setRotationY(rotationY); |
| view.setRotation(rotationZ); |
| } |
| |
| private static class Transforms { |
| public final float translationX; |
| public final float translationY; |
| public final float translationZ; |
| public final float scaleX; |
| public final float scaleY; |
| public final float rotationX; |
| public final float rotationY; |
| public final float rotationZ; |
| |
| public Transforms(View view) { |
| translationX = view.getTranslationX(); |
| translationY = view.getTranslationY(); |
| translationZ = view.getTranslationZ(); |
| scaleX = view.getScaleX(); |
| scaleY = view.getScaleY(); |
| rotationX = view.getRotationX(); |
| rotationY = view.getRotationY(); |
| rotationZ = view.getRotation(); |
| } |
| |
| public void restore(View view) { |
| setTransforms(view, translationX, translationY, translationZ, scaleX, scaleY, |
| rotationX, rotationY, rotationZ); |
| } |
| |
| @Override |
| public boolean equals(Object that) { |
| if (!(that instanceof Transforms)) { |
| return false; |
| } |
| Transforms thatTransform = (Transforms) that; |
| return thatTransform.translationX == translationX && |
| thatTransform.translationY == translationY && |
| thatTransform.translationZ == translationZ && |
| thatTransform.scaleX == scaleX && |
| thatTransform.scaleY == scaleY && |
| thatTransform.rotationX == rotationX && |
| thatTransform.rotationY == rotationY && |
| thatTransform.rotationZ == rotationZ; |
| } |
| } |
| |
| private static class GhostListener extends Transition.TransitionListenerAdapter { |
| private View mView; |
| private GhostView mGhostView; |
| private Matrix mEndMatrix; |
| |
| public GhostListener(View view, GhostView ghostView, Matrix endMatrix) { |
| mView = view; |
| mGhostView = ghostView; |
| mEndMatrix = endMatrix; |
| } |
| |
| @Override |
| public void onTransitionEnd(Transition transition) { |
| transition.removeListener(this); |
| GhostView.removeGhost(mView); |
| mView.setTagInternal(R.id.transitionTransform, null); |
| mView.setTagInternal(R.id.parentMatrix, null); |
| } |
| |
| @Override |
| public void onTransitionPause(Transition transition) { |
| mGhostView.setVisibility(View.INVISIBLE); |
| } |
| |
| @Override |
| public void onTransitionResume(Transition transition) { |
| mGhostView.setVisibility(View.VISIBLE); |
| } |
| } |
| } |