| /* |
| * Copyright (C) 2013 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.AnimatorSet; |
| import android.animation.ObjectAnimator; |
| import android.animation.PropertyValuesHolder; |
| import android.animation.RectEvaluator; |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| 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.util.AttributeSet; |
| import android.util.Property; |
| import android.view.View; |
| import android.view.ViewGroup; |
| |
| import com.android.internal.R; |
| |
| 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>, using its attributes of |
| * {@link android.R.styleable#ChangeBounds} along with the other standard |
| * attributes of {@link android.R.styleable#Transition}.</p> |
| */ |
| public class ChangeBounds extends Transition { |
| |
| private static final String PROPNAME_BOUNDS = "android:changeBounds:bounds"; |
| private static final String PROPNAME_CLIP = "android:changeBounds:clip"; |
| 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_CLIP, |
| 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 static final Property<ViewBounds, PointF> TOP_LEFT_PROPERTY = |
| new Property<ViewBounds, PointF>(PointF.class, "topLeft") { |
| @Override |
| public void set(ViewBounds viewBounds, PointF topLeft) { |
| viewBounds.setTopLeft(topLeft); |
| } |
| |
| @Override |
| public PointF get(ViewBounds viewBounds) { |
| return null; |
| } |
| }; |
| |
| private static final Property<ViewBounds, PointF> BOTTOM_RIGHT_PROPERTY = |
| new Property<ViewBounds, PointF>(PointF.class, "bottomRight") { |
| @Override |
| public void set(ViewBounds viewBounds, PointF bottomRight) { |
| viewBounds.setBottomRight(bottomRight); |
| } |
| |
| @Override |
| public PointF get(ViewBounds viewBounds) { |
| return null; |
| } |
| }; |
| |
| private static final Property<View, PointF> BOTTOM_RIGHT_ONLY_PROPERTY = |
| new Property<View, PointF>(PointF.class, "bottomRight") { |
| @Override |
| public void set(View view, PointF bottomRight) { |
| int left = view.getLeft(); |
| int top = view.getTop(); |
| int right = Math.round(bottomRight.x); |
| int bottom = Math.round(bottomRight.y); |
| view.setLeftTopRightBottom(left, top, right, bottom); |
| } |
| |
| @Override |
| public PointF get(View view) { |
| return null; |
| } |
| }; |
| |
| private static final Property<View, PointF> TOP_LEFT_ONLY_PROPERTY = |
| new Property<View, PointF>(PointF.class, "topLeft") { |
| @Override |
| public void set(View view, PointF topLeft) { |
| int left = Math.round(topLeft.x); |
| int top = Math.round(topLeft.y); |
| int right = view.getRight(); |
| int bottom = view.getBottom(); |
| view.setLeftTopRightBottom(left, top, right, bottom); |
| } |
| |
| @Override |
| public PointF get(View view) { |
| return null; |
| } |
| }; |
| |
| private static final Property<View, PointF> POSITION_PROPERTY = |
| new Property<View, PointF>(PointF.class, "position") { |
| @Override |
| public void set(View view, PointF topLeft) { |
| int left = Math.round(topLeft.x); |
| int top = Math.round(topLeft.y); |
| int right = left + view.getWidth(); |
| int bottom = top + view.getHeight(); |
| view.setLeftTopRightBottom(left, top, right, bottom); |
| } |
| |
| @Override |
| public PointF get(View view) { |
| return null; |
| } |
| }; |
| |
| int[] tempLocation = new int[2]; |
| boolean mResizeClip = false; |
| boolean mReparent = false; |
| private static final String LOG_TAG = "ChangeBounds"; |
| |
| private static RectEvaluator sRectEvaluator = new RectEvaluator(); |
| |
| public ChangeBounds() {} |
| |
| public ChangeBounds(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| |
| TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.ChangeBounds); |
| boolean resizeClip = a.getBoolean(R.styleable.ChangeBounds_resizeClip, false); |
| a.recycle(); |
| setResizeClip(resizeClip); |
| } |
| |
| @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) |
| * @attr ref android.R.styleable#ChangeBounds_resizeClip |
| */ |
| public void setResizeClip(boolean resizeClip) { |
| mResizeClip = resizeClip; |
| } |
| |
| /** |
| * Returns true when the ChangeBounds will resize by changing the clip bounds during the |
| * view animation or false when bounds are changed. The default value is false. |
| * |
| * @return true when the ChangeBounds will resize by changing the clip bounds during the |
| * view animation or false when bounds are changed. The default value is false. |
| * @attr ref android.R.styleable#ChangeBounds_resizeClip |
| */ |
| public boolean getResizeClip() { |
| return mResizeClip; |
| } |
| |
| /** |
| * Setting this flag tells ChangeBounds to track the before/after parent |
| * of every view using this transition. The flag is not enabled by |
| * default because it requires the parent instances to be the same |
| * in the two scenes or else all parents must use ids to allow |
| * the transition to determine which parents are the same. |
| * |
| * @param reparent true if the transition should track the parent |
| * container of target views and animate parent changes. |
| * @deprecated Use {@link android.transition.ChangeTransform} to handle |
| * transitions between different parents. |
| */ |
| @Deprecated |
| public void setReparent(boolean reparent) { |
| mReparent = reparent; |
| } |
| |
| private void captureValues(TransitionValues values) { |
| View view = values.view; |
| |
| if (view.isLaidOut() || 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(tempLocation); |
| values.values.put(PROPNAME_WINDOW_X, tempLocation[0]); |
| values.values.put(PROPNAME_WINDOW_Y, tempLocation[1]); |
| } |
| if (mResizeClip) { |
| values.values.put(PROPNAME_CLIP, view.getClipBounds()); |
| } |
| } |
| } |
| |
| @Override |
| public void captureStartValues(TransitionValues transitionValues) { |
| captureValues(transitionValues); |
| } |
| |
| @Override |
| public void captureEndValues(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 |
| public Animator createAnimator(final ViewGroup sceneRoot, TransitionValues startValues, |
| 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); |
| final int startLeft = startBounds.left; |
| final int endLeft = endBounds.left; |
| final int startTop = startBounds.top; |
| final int endTop = endBounds.top; |
| final int startRight = startBounds.right; |
| final int endRight = endBounds.right; |
| final int startBottom = startBounds.bottom; |
| final int endBottom = endBounds.bottom; |
| final int startWidth = startRight - startLeft; |
| final int startHeight = startBottom - startTop; |
| final int endWidth = endRight - endLeft; |
| final int endHeight = endBottom - endTop; |
| Rect startClip = (Rect) startValues.values.get(PROPNAME_CLIP); |
| Rect endClip = (Rect) endValues.values.get(PROPNAME_CLIP); |
| int numChanges = 0; |
| if ((startWidth != 0 && startHeight != 0) || (endWidth != 0 && endHeight != 0)) { |
| if (startLeft != endLeft || startTop != endTop) ++numChanges; |
| if (startRight != endRight || startBottom != endBottom) ++numChanges; |
| } |
| if ((startClip != null && !startClip.equals(endClip)) || |
| (startClip == null && endClip != null)) { |
| ++numChanges; |
| } |
| if (numChanges > 0) { |
| if (view.getParent() instanceof ViewGroup) { |
| final ViewGroup parent = (ViewGroup) view.getParent(); |
| parent.suppressLayout(true); |
| TransitionListener transitionListener = new TransitionListenerAdapter() { |
| boolean mCanceled = false; |
| |
| @Override |
| public void onTransitionCancel(Transition transition) { |
| parent.suppressLayout(false); |
| mCanceled = true; |
| } |
| |
| @Override |
| public void onTransitionEnd(Transition transition) { |
| if (!mCanceled) { |
| parent.suppressLayout(false); |
| } |
| transition.removeListener(this); |
| } |
| |
| @Override |
| public void onTransitionPause(Transition transition) { |
| parent.suppressLayout(false); |
| } |
| |
| @Override |
| public void onTransitionResume(Transition transition) { |
| parent.suppressLayout(true); |
| } |
| }; |
| addListener(transitionListener); |
| } |
| Animator anim; |
| if (!mResizeClip) { |
| view.setLeftTopRightBottom(startLeft, startTop, startRight, startBottom); |
| if (numChanges == 2) { |
| if (startWidth == endWidth && startHeight == endHeight) { |
| Path topLeftPath = getPathMotion().getPath(startLeft, startTop, endLeft, |
| endTop); |
| anim = ObjectAnimator.ofObject(view, POSITION_PROPERTY, null, |
| topLeftPath); |
| } else { |
| final ViewBounds viewBounds = new ViewBounds(view); |
| Path topLeftPath = getPathMotion().getPath(startLeft, startTop, |
| endLeft, endTop); |
| ObjectAnimator topLeftAnimator = ObjectAnimator |
| .ofObject(viewBounds, TOP_LEFT_PROPERTY, null, topLeftPath); |
| |
| Path bottomRightPath = getPathMotion().getPath(startRight, startBottom, |
| endRight, endBottom); |
| ObjectAnimator bottomRightAnimator = ObjectAnimator.ofObject(viewBounds, |
| BOTTOM_RIGHT_PROPERTY, null, bottomRightPath); |
| AnimatorSet set = new AnimatorSet(); |
| set.playTogether(topLeftAnimator, bottomRightAnimator); |
| anim = set; |
| set.addListener(new AnimatorListenerAdapter() { |
| // We need a strong reference to viewBounds until the |
| // animator ends. |
| private ViewBounds mViewBounds = viewBounds; |
| }); |
| } |
| } else if (startLeft != endLeft || startTop != endTop) { |
| Path topLeftPath = getPathMotion().getPath(startLeft, startTop, |
| endLeft, endTop); |
| anim = ObjectAnimator.ofObject(view, TOP_LEFT_ONLY_PROPERTY, null, |
| topLeftPath); |
| } else { |
| Path bottomRight = getPathMotion().getPath(startRight, startBottom, |
| endRight, endBottom); |
| anim = ObjectAnimator.ofObject(view, BOTTOM_RIGHT_ONLY_PROPERTY, null, |
| bottomRight); |
| } |
| } else { |
| int maxWidth = Math.max(startWidth, endWidth); |
| int maxHeight = Math.max(startHeight, endHeight); |
| |
| view.setLeftTopRightBottom(startLeft, startTop, startLeft + maxWidth, |
| startTop + maxHeight); |
| |
| ObjectAnimator positionAnimator = null; |
| if (startLeft != endLeft || startTop != endTop) { |
| Path topLeftPath = getPathMotion().getPath(startLeft, startTop, endLeft, |
| endTop); |
| positionAnimator = ObjectAnimator.ofObject(view, POSITION_PROPERTY, null, |
| topLeftPath); |
| } |
| final Rect finalClip = endClip; |
| if (startClip == null) { |
| startClip = new Rect(0, 0, startWidth, startHeight); |
| } |
| if (endClip == null) { |
| endClip = new Rect(0, 0, endWidth, endHeight); |
| } |
| ObjectAnimator clipAnimator = null; |
| if (!startClip.equals(endClip)) { |
| view.setClipBounds(startClip); |
| clipAnimator = ObjectAnimator.ofObject(view, "clipBounds", sRectEvaluator, |
| startClip, endClip); |
| clipAnimator.addListener(new AnimatorListenerAdapter() { |
| private boolean mIsCanceled; |
| |
| @Override |
| public void onAnimationCancel(Animator animation) { |
| mIsCanceled = true; |
| } |
| |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| if (!mIsCanceled) { |
| view.setClipBounds(finalClip); |
| view.setLeftTopRightBottom(endLeft, endTop, endRight, |
| endBottom); |
| } |
| } |
| }); |
| } |
| anim = TransitionUtils.mergeAnimators(positionAnimator, |
| clipAnimator); |
| } |
| return anim; |
| } |
| } else { |
| sceneRoot.getLocationInWindow(tempLocation); |
| int startX = (Integer) startValues.values.get(PROPNAME_WINDOW_X) - tempLocation[0]; |
| int startY = (Integer) startValues.values.get(PROPNAME_WINDOW_Y) - tempLocation[1]; |
| int endX = (Integer) endValues.values.get(PROPNAME_WINDOW_X) - tempLocation[0]; |
| int endY = (Integer) endValues.values.get(PROPNAME_WINDOW_Y) - tempLocation[1]; |
| // TODO: also handle size changes: check bounds and animate size changes |
| if (startX != endX || startY != endY) { |
| final int width = view.getWidth(); |
| final int height = view.getHeight(); |
| Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888); |
| Canvas canvas = new Canvas(bitmap); |
| view.draw(canvas); |
| final BitmapDrawable drawable = new BitmapDrawable(bitmap); |
| drawable.setBounds(startX, startY, startX + width, startY + height); |
| final float transitionAlpha = view.getTransitionAlpha(); |
| view.setTransitionAlpha(0); |
| sceneRoot.getOverlay().add(drawable); |
| Path topLeftPath = getPathMotion().getPath(startX, startY, endX, endY); |
| PropertyValuesHolder origin = PropertyValuesHolder.ofObject( |
| DRAWABLE_ORIGIN_PROPERTY, null, topLeftPath); |
| ObjectAnimator anim = ObjectAnimator.ofPropertyValuesHolder(drawable, origin); |
| anim.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| sceneRoot.getOverlay().remove(drawable); |
| view.setTransitionAlpha(transitionAlpha); |
| } |
| }); |
| return anim; |
| } |
| } |
| return null; |
| } |
| |
| private static class ViewBounds { |
| private int mLeft; |
| private int mTop; |
| private int mRight; |
| private int mBottom; |
| private View mView; |
| private int mTopLeftCalls; |
| private int mBottomRightCalls; |
| |
| public ViewBounds(View view) { |
| mView = view; |
| } |
| |
| public void setTopLeft(PointF topLeft) { |
| mLeft = Math.round(topLeft.x); |
| mTop = Math.round(topLeft.y); |
| mTopLeftCalls++; |
| if (mTopLeftCalls == mBottomRightCalls) { |
| setLeftTopRightBottom(); |
| } |
| } |
| |
| public void setBottomRight(PointF bottomRight) { |
| mRight = Math.round(bottomRight.x); |
| mBottom = Math.round(bottomRight.y); |
| mBottomRightCalls++; |
| if (mTopLeftCalls == mBottomRightCalls) { |
| setLeftTopRightBottom(); |
| } |
| } |
| |
| private void setLeftTopRightBottom() { |
| mView.setLeftTopRightBottom(mLeft, mTop, mRight, mBottom); |
| mTopLeftCalls = 0; |
| mBottomRightCalls = 0; |
| } |
| } |
| } |