| /* |
| * 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.ObjectAnimator; |
| import android.animation.PropertyValuesHolder; |
| import android.animation.RectEvaluator; |
| import android.graphics.Bitmap; |
| import android.graphics.Canvas; |
| import android.graphics.Rect; |
| import android.graphics.drawable.BitmapDrawable; |
| 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 {@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_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 |
| }; |
| |
| int[] tempLocation = new int[2]; |
| boolean mResizeClip = false; |
| boolean mReparent = false; |
| private static final String LOG_TAG = "ChangeBounds"; |
| |
| private static RectEvaluator sRectEvaluator = new RectEvaluator(); |
| |
| @Override |
| public String[] getTransitionProperties() { |
| return sTransitionProperties; |
| } |
| |
| public void setResizeClip(boolean resizeClip) { |
| mResizeClip = resizeClip; |
| } |
| |
| /** |
| * 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. |
| */ |
| public void setReparent(boolean reparent) { |
| mReparent = reparent; |
| } |
| |
| private void captureValues(TransitionValues values) { |
| View view = values.view; |
| values.values.put(PROPNAME_BOUNDS, new Rect(view.getLeft(), view.getTop(), |
| view.getRight(), view.getBottom())); |
| values.values.put(PROPNAME_PARENT, values.view.getParent()); |
| values.view.getLocationInWindow(tempLocation); |
| values.values.put(PROPNAME_WINDOW_X, tempLocation[0]); |
| values.values.put(PROPNAME_WINDOW_Y, tempLocation[1]); |
| } |
| |
| @Override |
| public void captureStartValues(TransitionValues transitionValues) { |
| captureValues(transitionValues); |
| } |
| |
| @Override |
| public void captureEndValues(TransitionValues transitionValues) { |
| captureValues(transitionValues); |
| } |
| |
| @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; |
| boolean parentsEqual = (startParent == endParent) || |
| (startParent.getId() == endParent.getId()); |
| // TODO: Might want reparenting to be separate/subclass transition, or at least |
| // triggered by a property on ChangeBounds. Otherwise, we're forcing the requirement that |
| // all parents in layouts have IDs to avoid layout-inflation resulting in a side-effect |
| // of reparenting the views. |
| if (!mReparent || parentsEqual) { |
| 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) { |
| PropertyValuesHolder pvh[] = new PropertyValuesHolder[numChanges]; |
| int pvhIndex = 0; |
| if (startLeft != endLeft) view.setLeft(startLeft); |
| if (startTop != endTop) view.setTop(startTop); |
| if (startRight != endRight) view.setRight(startRight); |
| if (startBottom != endBottom) view.setBottom(startBottom); |
| if (startLeft != endLeft) { |
| pvh[pvhIndex++] = PropertyValuesHolder.ofInt("left", startLeft, endLeft); |
| } |
| if (startTop != endTop) { |
| pvh[pvhIndex++] = PropertyValuesHolder.ofInt("top", startTop, endTop); |
| } |
| if (startRight != endRight) { |
| pvh[pvhIndex++] = PropertyValuesHolder.ofInt("right", |
| startRight, endRight); |
| } |
| if (startBottom != endBottom) { |
| pvh[pvhIndex++] = PropertyValuesHolder.ofInt("bottom", |
| startBottom, endBottom); |
| } |
| ObjectAnimator anim = ObjectAnimator.ofPropertyValuesHolder(view, pvh); |
| 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); |
| } |
| } |
| |
| @Override |
| public void onTransitionPause(Transition transition) { |
| parent.suppressLayout(false); |
| } |
| |
| @Override |
| public void onTransitionResume(Transition transition) { |
| parent.suppressLayout(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; |
| numChanges = 0; |
| if (transXDelta != 0) numChanges++; |
| if (transYDelta != 0) numChanges++; |
| if (widthDelta != 0 || heightDelta != 0) numChanges++; |
| PropertyValuesHolder pvh[] = new PropertyValuesHolder[numChanges]; |
| int pvhIndex = 0; |
| if (transXDelta != 0) { |
| pvh[pvhIndex++] = PropertyValuesHolder.ofFloat("translationX", |
| view.getTranslationX(), 0); |
| } |
| if (transYDelta != 0) { |
| pvh[pvhIndex++] = PropertyValuesHolder.ofFloat("translationY", |
| view.getTranslationY(), 0); |
| } |
| if (widthDelta != 0 || heightDelta != 0) { |
| Rect tempStartBounds = new Rect(0, 0, startWidth, startHeight); |
| Rect tempEndBounds = new Rect(0, 0, endWidth, endHeight); |
| pvh[pvhIndex++] = PropertyValuesHolder.ofObject("clipBounds", |
| sRectEvaluator, tempStartBounds, tempEndBounds); |
| } |
| ObjectAnimator anim = ObjectAnimator.ofPropertyValuesHolder(view, pvh); |
| 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); |
| } |
| } |
| |
| @Override |
| public void onTransitionPause(Transition transition) { |
| parent.suppressLayout(false); |
| } |
| |
| @Override |
| public void onTransitionResume(Transition transition) { |
| parent.suppressLayout(true); |
| } |
| }; |
| addListener(transitionListener); |
| } |
| anim.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| view.setClipBounds(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(tempLocation); |
| Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), |
| Bitmap.Config.ARGB_8888); |
| Canvas canvas = new Canvas(bitmap); |
| view.draw(canvas); |
| final BitmapDrawable drawable = new BitmapDrawable(bitmap); |
| view.setVisibility(View.INVISIBLE); |
| sceneRoot.getOverlay().add(drawable); |
| Rect startBounds1 = new Rect(startX - tempLocation[0], startY - tempLocation[1], |
| startX - tempLocation[0] + view.getWidth(), |
| startY - tempLocation[1] + view.getHeight()); |
| Rect endBounds1 = new Rect(endX - tempLocation[0], endY - tempLocation[1], |
| endX - tempLocation[0] + view.getWidth(), |
| endY - tempLocation[1] + view.getHeight()); |
| ObjectAnimator anim = ObjectAnimator.ofObject(drawable, "bounds", |
| sRectEvaluator, startBounds1, endBounds1); |
| anim.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| sceneRoot.getOverlay().remove(drawable); |
| view.setVisibility(View.VISIBLE); |
| } |
| }); |
| return anim; |
| } |
| } |
| return null; |
| } |
| } |
