| /* |
| * 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 com.android.systemui.statusbar.stack; |
| |
| import android.content.Context; |
| import android.content.res.Configuration; |
| import android.graphics.Canvas; |
| import android.graphics.Paint; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.view.MotionEvent; |
| import android.view.VelocityTracker; |
| import android.view.View; |
| import android.view.ViewConfiguration; |
| import android.view.ViewGroup; |
| import android.view.ViewTreeObserver; |
| import android.view.animation.AnimationUtils; |
| import android.widget.OverScroller; |
| |
| import com.android.systemui.ExpandHelper; |
| import com.android.systemui.R; |
| import com.android.systemui.SwipeHelper; |
| import com.android.systemui.statusbar.ActivatableNotificationView; |
| import com.android.systemui.statusbar.ExpandableNotificationRow; |
| import com.android.systemui.statusbar.ExpandableView; |
| import com.android.systemui.statusbar.SpeedBumpView; |
| import com.android.systemui.statusbar.policy.ScrollAdapter; |
| import com.android.systemui.statusbar.stack.StackScrollState.ViewState; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * A layout which handles a dynamic amount of notifications and presents them in a scrollable stack. |
| */ |
| public class NotificationStackScrollLayout extends ViewGroup |
| implements SwipeHelper.Callback, ExpandHelper.Callback, ScrollAdapter, |
| ExpandableView.OnHeightChangedListener { |
| |
| private static final String TAG = "NotificationStackScrollLayout"; |
| private static final boolean DEBUG = false; |
| private static final float RUBBER_BAND_FACTOR_NORMAL = 0.35f; |
| private static final float RUBBER_BAND_FACTOR_AFTER_EXPAND = 0.15f; |
| private static final float RUBBER_BAND_FACTOR_ON_PANEL_EXPAND = 0.21f; |
| |
| /** |
| * Sentinel value for no current active pointer. Used by {@link #mActivePointerId}. |
| */ |
| private static final int INVALID_POINTER = -1; |
| |
| private ExpandHelper mExpandHelper; |
| private SwipeHelper mSwipeHelper; |
| private boolean mSwipingInProgress; |
| private int mCurrentStackHeight = Integer.MAX_VALUE; |
| private int mOwnScrollY; |
| private int mMaxLayoutHeight; |
| |
| private VelocityTracker mVelocityTracker; |
| private OverScroller mScroller; |
| private int mTouchSlop; |
| private int mMinimumVelocity; |
| private int mMaximumVelocity; |
| private int mOverflingDistance; |
| private float mMaxOverScroll; |
| private boolean mIsBeingDragged; |
| private int mLastMotionY; |
| private int mDownX; |
| private int mActivePointerId; |
| |
| private int mSidePaddings; |
| private Paint mDebugPaint; |
| private int mContentHeight; |
| private int mCollapsedSize; |
| private int mBottomStackSlowDownHeight; |
| private int mBottomStackPeekSize; |
| private int mPaddingBetweenElements; |
| private int mPaddingBetweenElementsDimmed; |
| private int mPaddingBetweenElementsNormal; |
| private int mTopPadding; |
| private int mCollapseSecondCardPadding; |
| |
| /** |
| * The algorithm which calculates the properties for our children |
| */ |
| private StackScrollAlgorithm mStackScrollAlgorithm; |
| |
| /** |
| * The current State this Layout is in |
| */ |
| private StackScrollState mCurrentStackScrollState = new StackScrollState(this); |
| private AmbientState mAmbientState = new AmbientState(); |
| private ArrayList<View> mChildrenToAddAnimated = new ArrayList<View>(); |
| private ArrayList<View> mChildrenToRemoveAnimated = new ArrayList<View>(); |
| private ArrayList<View> mSnappedBackChildren = new ArrayList<View>(); |
| private ArrayList<View> mDragAnimPendingChildren = new ArrayList<View>(); |
| private ArrayList<View> mChildrenChangingPositions = new ArrayList<View>(); |
| private ArrayList<AnimationEvent> mAnimationEvents |
| = new ArrayList<AnimationEvent>(); |
| private ArrayList<View> mSwipedOutViews = new ArrayList<View>(); |
| private final StackStateAnimator mStateAnimator = new StackStateAnimator(this); |
| private boolean mAnimationsEnabled; |
| private boolean mChangePositionInProgress; |
| |
| /** |
| * The raw amount of the overScroll on the top, which is not rubber-banded. |
| */ |
| private float mOverScrolledTopPixels; |
| |
| /** |
| * The raw amount of the overScroll on the bottom, which is not rubber-banded. |
| */ |
| private float mOverScrolledBottomPixels; |
| |
| private OnChildLocationsChangedListener mListener; |
| private OnOverscrollTopChangedListener mOverscrollTopChangedListener; |
| private ExpandableView.OnHeightChangedListener mOnHeightChangedListener; |
| private boolean mNeedsAnimation; |
| private boolean mTopPaddingNeedsAnimation; |
| private boolean mDimmedNeedsAnimation; |
| private boolean mDarkNeedsAnimation; |
| private boolean mActivateNeedsAnimation; |
| private boolean mIsExpanded = true; |
| private boolean mChildrenUpdateRequested; |
| private SpeedBumpView mSpeedBumpView; |
| private boolean mIsExpansionChanging; |
| private boolean mExpandingNotification; |
| private boolean mExpandedInThisMotion; |
| private boolean mScrollingEnabled; |
| |
| /** |
| * Was the scroller scrolled to the top when the down motion was observed? |
| */ |
| private boolean mScrolledToTopOnFirstDown; |
| |
| /** |
| * The minimal amount of over scroll which is needed in order to switch to the quick settings |
| * when over scrolling on a expanded card. |
| */ |
| private float mMinTopOverScrollToEscape; |
| private int mIntrinsicPadding; |
| private int mNotificationTopPadding; |
| private float mTopPaddingOverflow; |
| private boolean mDontReportNextOverScroll; |
| |
| /** |
| * The maximum scrollPosition which we are allowed to reach when a notification was expanded. |
| * This is needed to avoid scrolling too far after the notification was collapsed in the same |
| * motion. |
| */ |
| private int mMaxScrollAfterExpand; |
| private OnLongClickListener mLongClickListener; |
| |
| /** |
| * Should in this touch motion only be scrolling allowed? It's true when the scroller was |
| * animating. |
| */ |
| private boolean mOnlyScrollingInThisMotion; |
| private ViewGroup mScrollView; |
| private boolean mInterceptDelegateEnabled; |
| private boolean mDelegateToScrollView; |
| private boolean mDisallowScrollingInThisMotion; |
| |
| private ViewTreeObserver.OnPreDrawListener mChildrenUpdater |
| = new ViewTreeObserver.OnPreDrawListener() { |
| @Override |
| public boolean onPreDraw() { |
| updateChildren(); |
| mChildrenUpdateRequested = false; |
| getViewTreeObserver().removeOnPreDrawListener(this); |
| return true; |
| } |
| }; |
| |
| public NotificationStackScrollLayout(Context context) { |
| this(context, null); |
| } |
| |
| public NotificationStackScrollLayout(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public NotificationStackScrollLayout(Context context, AttributeSet attrs, int defStyleAttr) { |
| this(context, attrs, defStyleAttr, 0); |
| } |
| |
| public NotificationStackScrollLayout(Context context, AttributeSet attrs, int defStyleAttr, |
| int defStyleRes) { |
| super(context, attrs, defStyleAttr, defStyleRes); |
| initView(context); |
| if (DEBUG) { |
| setWillNotDraw(false); |
| mDebugPaint = new Paint(); |
| mDebugPaint.setColor(0xffff0000); |
| mDebugPaint.setStrokeWidth(2); |
| mDebugPaint.setStyle(Paint.Style.STROKE); |
| } |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| if (DEBUG) { |
| int y = mCollapsedSize; |
| canvas.drawLine(0, y, getWidth(), y, mDebugPaint); |
| y = (int) (getLayoutHeight() - mBottomStackPeekSize |
| - mBottomStackSlowDownHeight); |
| canvas.drawLine(0, y, getWidth(), y, mDebugPaint); |
| y = (int) (getLayoutHeight() - mBottomStackPeekSize); |
| canvas.drawLine(0, y, getWidth(), y, mDebugPaint); |
| y = (int) getLayoutHeight(); |
| canvas.drawLine(0, y, getWidth(), y, mDebugPaint); |
| y = getHeight() - getEmptyBottomMargin(); |
| canvas.drawLine(0, y, getWidth(), y, mDebugPaint); |
| } |
| } |
| |
| private void initView(Context context) { |
| mScroller = new OverScroller(getContext()); |
| setFocusable(true); |
| setDescendantFocusability(FOCUS_AFTER_DESCENDANTS); |
| setClipChildren(false); |
| final ViewConfiguration configuration = ViewConfiguration.get(context); |
| mTouchSlop = configuration.getScaledTouchSlop(); |
| mMinimumVelocity = configuration.getScaledMinimumFlingVelocity(); |
| mMaximumVelocity = configuration.getScaledMaximumFlingVelocity(); |
| mOverflingDistance = configuration.getScaledOverflingDistance(); |
| float densityScale = getResources().getDisplayMetrics().density; |
| float pagingTouchSlop = ViewConfiguration.get(getContext()).getScaledPagingTouchSlop(); |
| mSwipeHelper = new SwipeHelper(SwipeHelper.X, this, densityScale, pagingTouchSlop); |
| mSwipeHelper.setLongPressListener(mLongClickListener); |
| |
| mSidePaddings = context.getResources() |
| .getDimensionPixelSize(R.dimen.notification_side_padding); |
| mCollapsedSize = context.getResources() |
| .getDimensionPixelSize(R.dimen.notification_min_height); |
| mBottomStackPeekSize = context.getResources() |
| .getDimensionPixelSize(R.dimen.bottom_stack_peek_amount); |
| mStackScrollAlgorithm = new StackScrollAlgorithm(context); |
| mStackScrollAlgorithm.setDimmed(mAmbientState.isDimmed()); |
| mPaddingBetweenElementsDimmed = context.getResources() |
| .getDimensionPixelSize(R.dimen.notification_padding_dimmed); |
| mPaddingBetweenElementsNormal = context.getResources() |
| .getDimensionPixelSize(R.dimen.notification_padding); |
| updatePadding(mAmbientState.isDimmed()); |
| int minHeight = getResources().getDimensionPixelSize(R.dimen.notification_min_height); |
| int maxHeight = getResources().getDimensionPixelSize(R.dimen.notification_max_height); |
| mExpandHelper = new ExpandHelper(getContext(), this, |
| minHeight, maxHeight); |
| mExpandHelper.setEventSource(this); |
| mExpandHelper.setScrollAdapter(this); |
| mMinTopOverScrollToEscape = getResources().getDimensionPixelSize( |
| R.dimen.min_top_overscroll_to_qs); |
| mNotificationTopPadding = getResources().getDimensionPixelSize( |
| R.dimen.notifications_top_padding); |
| mCollapseSecondCardPadding = getResources().getDimensionPixelSize( |
| R.dimen.notification_collapse_second_card_padding); |
| } |
| |
| private void updatePadding(boolean dimmed) { |
| mPaddingBetweenElements = dimmed |
| ? mPaddingBetweenElementsDimmed |
| : mPaddingBetweenElementsNormal; |
| mBottomStackSlowDownHeight = mStackScrollAlgorithm.getBottomStackSlowDownLength(); |
| updateContentHeight(); |
| notifyHeightChangeListener(null); |
| } |
| |
| private void notifyHeightChangeListener(ExpandableView view) { |
| if (mOnHeightChangedListener != null) { |
| mOnHeightChangedListener.onHeightChanged(view); |
| } |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| super.onMeasure(widthMeasureSpec, heightMeasureSpec); |
| int mode = MeasureSpec.getMode(widthMeasureSpec); |
| int size = MeasureSpec.getSize(widthMeasureSpec); |
| int childMeasureSpec = MeasureSpec.makeMeasureSpec(size - 2 * mSidePaddings, mode); |
| measureChildren(childMeasureSpec, heightMeasureSpec); |
| } |
| |
| @Override |
| protected void onLayout(boolean changed, int l, int t, int r, int b) { |
| |
| // we layout all our children centered on the top |
| float centerX = getWidth() / 2.0f; |
| for (int i = 0; i < getChildCount(); i++) { |
| View child = getChildAt(i); |
| float width = child.getMeasuredWidth(); |
| float height = child.getMeasuredHeight(); |
| child.layout((int) (centerX - width / 2.0f), |
| 0, |
| (int) (centerX + width / 2.0f), |
| (int) height); |
| } |
| setMaxLayoutHeight(getHeight()); |
| updateContentHeight(); |
| clampScrollPosition(); |
| requestChildrenUpdate(); |
| } |
| |
| public void updateSpeedBumpIndex(int newIndex) { |
| int currentIndex = indexOfChild(mSpeedBumpView); |
| |
| // If we are currently layouted before the new speed bump index, we have to decrease it. |
| boolean validIndex = newIndex > 0; |
| if (newIndex > getChildCount() - 1) { |
| validIndex = false; |
| newIndex = -1; |
| } |
| if (validIndex && currentIndex != newIndex) { |
| changeViewPosition(mSpeedBumpView, newIndex); |
| } |
| updateSpeedBump(validIndex); |
| mAmbientState.setSpeedBumpIndex(newIndex); |
| } |
| |
| public void setChildLocationsChangedListener(OnChildLocationsChangedListener listener) { |
| mListener = listener; |
| } |
| |
| /** |
| * Returns the location the given child is currently rendered at. |
| * |
| * @param child the child to get the location for |
| * @return one of {@link ViewState}'s <code>LOCATION_*</code> constants |
| */ |
| public int getChildLocation(View child) { |
| ViewState childViewState = mCurrentStackScrollState.getViewStateForView(child); |
| if (childViewState == null) { |
| return ViewState.LOCATION_UNKNOWN; |
| } |
| return childViewState.location; |
| } |
| |
| private void setMaxLayoutHeight(int maxLayoutHeight) { |
| mMaxLayoutHeight = maxLayoutHeight; |
| updateAlgorithmHeightAndPadding(); |
| } |
| |
| private void updateAlgorithmHeightAndPadding() { |
| mStackScrollAlgorithm.setLayoutHeight(getLayoutHeight()); |
| mStackScrollAlgorithm.setTopPadding(mTopPadding); |
| } |
| |
| /** |
| * @return whether the height of the layout needs to be adapted, in order to ensure that the |
| * last child is not in the bottom stack. |
| */ |
| private boolean needsHeightAdaption() { |
| return getNotGoneChildCount() > 1; |
| } |
| |
| /** |
| * Updates the children views according to the stack scroll algorithm. Call this whenever |
| * modifications to {@link #mOwnScrollY} are performed to reflect it in the view layout. |
| */ |
| private void updateChildren() { |
| mAmbientState.setScrollY(mOwnScrollY); |
| mStackScrollAlgorithm.getStackScrollState(mAmbientState, mCurrentStackScrollState); |
| if (!isCurrentlyAnimating() && !mNeedsAnimation) { |
| applyCurrentState(); |
| } else { |
| startAnimationToState(); |
| } |
| } |
| |
| private void requestChildrenUpdate() { |
| if (!mChildrenUpdateRequested) { |
| getViewTreeObserver().addOnPreDrawListener(mChildrenUpdater); |
| mChildrenUpdateRequested = true; |
| invalidate(); |
| } |
| } |
| |
| private boolean isCurrentlyAnimating() { |
| return mStateAnimator.isRunning(); |
| } |
| |
| private void clampScrollPosition() { |
| int scrollRange = getScrollRange(); |
| if (scrollRange < mOwnScrollY) { |
| mOwnScrollY = scrollRange; |
| } |
| } |
| |
| public int getTopPadding() { |
| return mTopPadding; |
| } |
| |
| private void setTopPadding(int topPadding, boolean animate) { |
| if (mTopPadding != topPadding) { |
| mTopPadding = topPadding; |
| updateAlgorithmHeightAndPadding(); |
| updateContentHeight(); |
| if (animate && mAnimationsEnabled && mIsExpanded) { |
| mTopPaddingNeedsAnimation = true; |
| mNeedsAnimation = true; |
| } |
| requestChildrenUpdate(); |
| notifyHeightChangeListener(null); |
| } |
| } |
| |
| /** |
| * Update the height of the stack to a new height. |
| * |
| * @param height the new height of the stack |
| */ |
| public void setStackHeight(float height) { |
| setIsExpanded(height > 0.0f); |
| int newStackHeight = (int) height; |
| int minStackHeight = getMinStackHeight(); |
| int stackHeight; |
| if (newStackHeight - mTopPadding >= minStackHeight || getNotGoneChildCount() == 0) { |
| setTranslationY(mTopPaddingOverflow); |
| stackHeight = newStackHeight; |
| } else { |
| |
| // We did not reach the position yet where we actually start growing, |
| // so we translate the stack upwards. |
| int translationY = (newStackHeight - minStackHeight); |
| // A slight parallax effect is introduced in order for the stack to catch up with |
| // the top card. |
| float partiallyThere = (float) (newStackHeight - mTopPadding) / minStackHeight; |
| partiallyThere = Math.max(0, partiallyThere); |
| translationY += (1 - partiallyThere) * (mBottomStackPeekSize + |
| mCollapseSecondCardPadding); |
| setTranslationY(translationY - mTopPadding); |
| stackHeight = (int) (height - (translationY - mTopPadding)); |
| } |
| if (stackHeight != mCurrentStackHeight) { |
| mCurrentStackHeight = stackHeight; |
| updateAlgorithmHeightAndPadding(); |
| requestChildrenUpdate(); |
| } |
| } |
| |
| /** |
| * Get the current height of the view. This is at most the msize of the view given by a the |
| * layout but it can also be made smaller by setting {@link #mCurrentStackHeight} |
| * |
| * @return either the layout height or the externally defined height, whichever is smaller |
| */ |
| private int getLayoutHeight() { |
| return Math.min(mMaxLayoutHeight, mCurrentStackHeight); |
| } |
| |
| public int getItemHeight() { |
| return mCollapsedSize; |
| } |
| |
| public int getBottomStackPeekSize() { |
| return mBottomStackPeekSize; |
| } |
| |
| public void setLongPressListener(View.OnLongClickListener listener) { |
| mSwipeHelper.setLongPressListener(listener); |
| mLongClickListener = listener; |
| } |
| |
| public void setScrollView(ViewGroup scrollView) { |
| mScrollView = scrollView; |
| } |
| |
| public void setInterceptDelegateEnabled(boolean interceptDelegateEnabled) { |
| mInterceptDelegateEnabled = interceptDelegateEnabled; |
| } |
| |
| public void onChildDismissed(View v) { |
| if (DEBUG) Log.v(TAG, "onChildDismissed: " + v); |
| final View veto = v.findViewById(R.id.veto); |
| if (veto != null && veto.getVisibility() != View.GONE) { |
| veto.performClick(); |
| } |
| setSwipingInProgress(false); |
| if (mDragAnimPendingChildren.contains(v)) { |
| // We start the swipe and finish it in the same frame, we don't want any animation |
| // for the drag |
| mDragAnimPendingChildren.remove(v); |
| } |
| mSwipedOutViews.add(v); |
| mAmbientState.onDragFinished(v); |
| } |
| |
| @Override |
| public void onChildSnappedBack(View animView) { |
| mAmbientState.onDragFinished(animView); |
| if (!mDragAnimPendingChildren.contains(animView)) { |
| if (mAnimationsEnabled) { |
| mSnappedBackChildren.add(animView); |
| mNeedsAnimation = true; |
| } |
| requestChildrenUpdate(); |
| } else { |
| // We start the swipe and snap back in the same frame, we don't want any animation |
| mDragAnimPendingChildren.remove(animView); |
| } |
| } |
| |
| @Override |
| public boolean updateSwipeProgress(View animView, boolean dismissable, float swipeProgress) { |
| return false; |
| } |
| |
| public void onBeginDrag(View v) { |
| setSwipingInProgress(true); |
| mAmbientState.onBeginDrag(v); |
| if (mAnimationsEnabled) { |
| mDragAnimPendingChildren.add(v); |
| mNeedsAnimation = true; |
| } |
| requestChildrenUpdate(); |
| } |
| |
| public void onDragCancelled(View v) { |
| setSwipingInProgress(false); |
| } |
| |
| public View getChildAtPosition(MotionEvent ev) { |
| return getChildAtPosition(ev.getX(), ev.getY()); |
| } |
| |
| public ExpandableView getChildAtRawPosition(float touchX, float touchY) { |
| int[] location = new int[2]; |
| getLocationOnScreen(location); |
| return getChildAtPosition(touchX - location[0], touchY - location[1]); |
| } |
| |
| public ExpandableView getChildAtPosition(float touchX, float touchY) { |
| // find the view under the pointer, accounting for GONE views |
| final int count = getChildCount(); |
| for (int childIdx = 0; childIdx < count; childIdx++) { |
| ExpandableView slidingChild = (ExpandableView) getChildAt(childIdx); |
| if (slidingChild.getVisibility() == GONE) { |
| continue; |
| } |
| float childTop = slidingChild.getTranslationY(); |
| float top = childTop + slidingChild.getClipTopAmount(); |
| float bottom = top + slidingChild.getActualHeight(); |
| int left = slidingChild.getLeft(); |
| int right = slidingChild.getRight(); |
| |
| if (touchY >= top && touchY <= bottom && touchX >= left && touchX <= right) { |
| return slidingChild; |
| } |
| } |
| return null; |
| } |
| |
| public boolean canChildBeExpanded(View v) { |
| return v instanceof ExpandableNotificationRow |
| && ((ExpandableNotificationRow) v).isExpandable(); |
| } |
| |
| public void setUserExpandedChild(View v, boolean userExpanded) { |
| if (v instanceof ExpandableNotificationRow) { |
| ((ExpandableNotificationRow) v).setUserExpanded(userExpanded); |
| } |
| } |
| |
| public void setUserLockedChild(View v, boolean userLocked) { |
| if (v instanceof ExpandableNotificationRow) { |
| ((ExpandableNotificationRow) v).setUserLocked(userLocked); |
| } |
| removeLongPressCallback(); |
| requestDisallowInterceptTouchEvent(true); |
| } |
| |
| @Override |
| public void expansionStateChanged(boolean isExpanding) { |
| mExpandingNotification = isExpanding; |
| if (!mExpandedInThisMotion) { |
| mMaxScrollAfterExpand = mOwnScrollY; |
| mExpandedInThisMotion = true; |
| } |
| } |
| |
| public void setScrollingEnabled(boolean enable) { |
| mScrollingEnabled = enable; |
| } |
| |
| public void setExpandingEnabled(boolean enable) { |
| mExpandHelper.setEnabled(enable); |
| } |
| |
| private boolean isScrollingEnabled() { |
| return mScrollingEnabled; |
| } |
| |
| public View getChildContentView(View v) { |
| return v; |
| } |
| |
| public boolean canChildBeDismissed(View v) { |
| final View veto = v.findViewById(R.id.veto); |
| return (veto != null && veto.getVisibility() != View.GONE); |
| } |
| |
| private void setSwipingInProgress(boolean isSwiped) { |
| mSwipingInProgress = isSwiped; |
| if(isSwiped) { |
| requestDisallowInterceptTouchEvent(true); |
| } |
| } |
| |
| @Override |
| protected void onConfigurationChanged(Configuration newConfig) { |
| super.onConfigurationChanged(newConfig); |
| float densityScale = getResources().getDisplayMetrics().density; |
| mSwipeHelper.setDensityScale(densityScale); |
| float pagingTouchSlop = ViewConfiguration.get(getContext()).getScaledPagingTouchSlop(); |
| mSwipeHelper.setPagingTouchSlop(pagingTouchSlop); |
| initView(getContext()); |
| } |
| |
| public void dismissRowAnimated(View child, int vel) { |
| mSwipeHelper.dismissChild(child, vel); |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent ev) { |
| boolean isCancelOrUp = ev.getActionMasked() == MotionEvent.ACTION_CANCEL |
| || ev.getActionMasked()== MotionEvent.ACTION_UP; |
| if (mDelegateToScrollView) { |
| if (isCancelOrUp) { |
| mDelegateToScrollView = false; |
| } |
| transformTouchEvent(ev, this, mScrollView); |
| return mScrollView.onTouchEvent(ev); |
| } |
| boolean expandWantsIt = false; |
| if (!mSwipingInProgress && !mOnlyScrollingInThisMotion && isScrollingEnabled()) { |
| if (isCancelOrUp) { |
| mExpandHelper.onlyObserveMovements(false); |
| } |
| boolean wasExpandingBefore = mExpandingNotification; |
| expandWantsIt = mExpandHelper.onTouchEvent(ev); |
| if (mExpandedInThisMotion && !mExpandingNotification && wasExpandingBefore |
| && !mDisallowScrollingInThisMotion) { |
| dispatchDownEventToScroller(ev); |
| } |
| } |
| boolean scrollerWantsIt = false; |
| if (!mSwipingInProgress && !mExpandingNotification && !mDisallowScrollingInThisMotion) { |
| scrollerWantsIt = onScrollTouch(ev); |
| } |
| boolean horizontalSwipeWantsIt = false; |
| if (!mIsBeingDragged |
| && !mExpandingNotification |
| && !mExpandedInThisMotion |
| && !mOnlyScrollingInThisMotion) { |
| horizontalSwipeWantsIt = mSwipeHelper.onTouchEvent(ev); |
| } |
| return horizontalSwipeWantsIt || scrollerWantsIt || expandWantsIt || super.onTouchEvent(ev); |
| } |
| |
| private void dispatchDownEventToScroller(MotionEvent ev) { |
| MotionEvent downEvent = MotionEvent.obtain(ev); |
| downEvent.setAction(MotionEvent.ACTION_DOWN); |
| onScrollTouch(downEvent); |
| downEvent.recycle(); |
| } |
| |
| private boolean onScrollTouch(MotionEvent ev) { |
| if (!isScrollingEnabled()) { |
| return false; |
| } |
| initVelocityTrackerIfNotExists(); |
| mVelocityTracker.addMovement(ev); |
| |
| final int action = ev.getAction(); |
| |
| switch (action & MotionEvent.ACTION_MASK) { |
| case MotionEvent.ACTION_DOWN: { |
| if (getChildCount() == 0 || !isInContentBounds(ev)) { |
| return false; |
| } |
| boolean isBeingDragged = !mScroller.isFinished(); |
| setIsBeingDragged(isBeingDragged); |
| |
| /* |
| * If being flinged and user touches, stop the fling. isFinished |
| * will be false if being flinged. |
| */ |
| if (!mScroller.isFinished()) { |
| mScroller.forceFinished(true); |
| } |
| |
| // Remember where the motion event started |
| mLastMotionY = (int) ev.getY(); |
| mDownX = (int) ev.getX(); |
| mActivePointerId = ev.getPointerId(0); |
| break; |
| } |
| case MotionEvent.ACTION_MOVE: |
| final int activePointerIndex = ev.findPointerIndex(mActivePointerId); |
| if (activePointerIndex == -1) { |
| Log.e(TAG, "Invalid pointerId=" + mActivePointerId + " in onTouchEvent"); |
| break; |
| } |
| |
| final int y = (int) ev.getY(activePointerIndex); |
| final int x = (int) ev.getX(activePointerIndex); |
| int deltaY = mLastMotionY - y; |
| final int xDiff = Math.abs(x - mDownX); |
| final int yDiff = Math.abs(deltaY); |
| if (!mIsBeingDragged && yDiff > mTouchSlop && yDiff > xDiff) { |
| setIsBeingDragged(true); |
| if (deltaY > 0) { |
| deltaY -= mTouchSlop; |
| } else { |
| deltaY += mTouchSlop; |
| } |
| } |
| if (mIsBeingDragged) { |
| // Scroll to follow the motion event |
| mLastMotionY = y; |
| int range = getScrollRange(); |
| if (mExpandedInThisMotion) { |
| range = Math.min(range, mMaxScrollAfterExpand); |
| } |
| |
| float scrollAmount; |
| if (deltaY < 0) { |
| scrollAmount = overScrollDown(deltaY); |
| } else { |
| scrollAmount = overScrollUp(deltaY, range); |
| } |
| |
| // Calling overScrollBy will call onOverScrolled, which |
| // calls onScrollChanged if applicable. |
| if (scrollAmount != 0.0f) { |
| // The scrolling motion could not be compensated with the |
| // existing overScroll, we have to scroll the view |
| overScrollBy(0, (int) scrollAmount, 0, mOwnScrollY, |
| 0, range, 0, getHeight() / 2, true); |
| } |
| } |
| break; |
| case MotionEvent.ACTION_UP: |
| if (mIsBeingDragged) { |
| final VelocityTracker velocityTracker = mVelocityTracker; |
| velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity); |
| int initialVelocity = (int) velocityTracker.getYVelocity(mActivePointerId); |
| |
| if (shouldOverScrollFling(initialVelocity)) { |
| onOverScrollFling(true, initialVelocity); |
| } else { |
| if (getChildCount() > 0) { |
| if ((Math.abs(initialVelocity) > mMinimumVelocity)) { |
| float currentOverScrollTop = getCurrentOverScrollAmount(true); |
| if (currentOverScrollTop == 0.0f || initialVelocity > 0) { |
| fling(-initialVelocity); |
| } else { |
| onOverScrollFling(false, initialVelocity); |
| } |
| } else { |
| if (mScroller.springBack(mScrollX, mOwnScrollY, 0, 0, 0, |
| getScrollRange())) { |
| postInvalidateOnAnimation(); |
| } |
| } |
| } |
| } |
| |
| mActivePointerId = INVALID_POINTER; |
| endDrag(); |
| } |
| |
| break; |
| case MotionEvent.ACTION_CANCEL: |
| if (mIsBeingDragged && getChildCount() > 0) { |
| if (mScroller.springBack(mScrollX, mOwnScrollY, 0, 0, 0, getScrollRange())) { |
| postInvalidateOnAnimation(); |
| } |
| mActivePointerId = INVALID_POINTER; |
| endDrag(); |
| } |
| break; |
| case MotionEvent.ACTION_POINTER_DOWN: { |
| final int index = ev.getActionIndex(); |
| mLastMotionY = (int) ev.getY(index); |
| mDownX = (int) ev.getX(index); |
| mActivePointerId = ev.getPointerId(index); |
| break; |
| } |
| case MotionEvent.ACTION_POINTER_UP: |
| onSecondaryPointerUp(ev); |
| mLastMotionY = (int) ev.getY(ev.findPointerIndex(mActivePointerId)); |
| mDownX = (int) ev.getX(ev.findPointerIndex(mActivePointerId)); |
| break; |
| } |
| return true; |
| } |
| |
| private void onOverScrollFling(boolean open, int initialVelocity) { |
| if (mOverscrollTopChangedListener != null) { |
| mOverscrollTopChangedListener.flingTopOverscroll(initialVelocity, open); |
| } |
| mDontReportNextOverScroll = true; |
| setOverScrollAmount(0.0f, true, false); |
| } |
| |
| /** |
| * Perform a scroll upwards and adapt the overscroll amounts accordingly |
| * |
| * @param deltaY The amount to scroll upwards, has to be positive. |
| * @return The amount of scrolling to be performed by the scroller, |
| * not handled by the overScroll amount. |
| */ |
| private float overScrollUp(int deltaY, int range) { |
| deltaY = Math.max(deltaY, 0); |
| float currentTopAmount = getCurrentOverScrollAmount(true); |
| float newTopAmount = currentTopAmount - deltaY; |
| if (currentTopAmount > 0) { |
| setOverScrollAmount(newTopAmount, true /* onTop */, |
| false /* animate */); |
| } |
| // Top overScroll might not grab all scrolling motion, |
| // we have to scroll as well. |
| float scrollAmount = newTopAmount < 0 ? -newTopAmount : 0.0f; |
| float newScrollY = mOwnScrollY + scrollAmount; |
| if (newScrollY > range) { |
| if (!mExpandedInThisMotion) { |
| float currentBottomPixels = getCurrentOverScrolledPixels(false); |
| // We overScroll on the top |
| setOverScrolledPixels(currentBottomPixels + newScrollY - range, |
| false /* onTop */, |
| false /* animate */); |
| } |
| mOwnScrollY = range; |
| scrollAmount = 0.0f; |
| } |
| return scrollAmount; |
| } |
| |
| /** |
| * Perform a scroll downward and adapt the overscroll amounts accordingly |
| * |
| * @param deltaY The amount to scroll downwards, has to be negative. |
| * @return The amount of scrolling to be performed by the scroller, |
| * not handled by the overScroll amount. |
| */ |
| private float overScrollDown(int deltaY) { |
| deltaY = Math.min(deltaY, 0); |
| float currentBottomAmount = getCurrentOverScrollAmount(false); |
| float newBottomAmount = currentBottomAmount + deltaY; |
| if (currentBottomAmount > 0) { |
| setOverScrollAmount(newBottomAmount, false /* onTop */, |
| false /* animate */); |
| } |
| // Bottom overScroll might not grab all scrolling motion, |
| // we have to scroll as well. |
| float scrollAmount = newBottomAmount < 0 ? newBottomAmount : 0.0f; |
| float newScrollY = mOwnScrollY + scrollAmount; |
| if (newScrollY < 0) { |
| float currentTopPixels = getCurrentOverScrolledPixels(true); |
| // We overScroll on the top |
| setOverScrolledPixels(currentTopPixels - newScrollY, |
| true /* onTop */, |
| false /* animate */); |
| mOwnScrollY = 0; |
| scrollAmount = 0.0f; |
| } |
| return scrollAmount; |
| } |
| |
| private void onSecondaryPointerUp(MotionEvent ev) { |
| final int pointerIndex = (ev.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK) >> |
| MotionEvent.ACTION_POINTER_INDEX_SHIFT; |
| final int pointerId = ev.getPointerId(pointerIndex); |
| if (pointerId == mActivePointerId) { |
| // This was our active pointer going up. Choose a new |
| // active pointer and adjust accordingly. |
| // TODO: Make this decision more intelligent. |
| final int newPointerIndex = pointerIndex == 0 ? 1 : 0; |
| mLastMotionY = (int) ev.getY(newPointerIndex); |
| mActivePointerId = ev.getPointerId(newPointerIndex); |
| if (mVelocityTracker != null) { |
| mVelocityTracker.clear(); |
| } |
| } |
| } |
| |
| private void initVelocityTrackerIfNotExists() { |
| if (mVelocityTracker == null) { |
| mVelocityTracker = VelocityTracker.obtain(); |
| } |
| } |
| |
| private void recycleVelocityTracker() { |
| if (mVelocityTracker != null) { |
| mVelocityTracker.recycle(); |
| mVelocityTracker = null; |
| } |
| } |
| |
| private void initOrResetVelocityTracker() { |
| if (mVelocityTracker == null) { |
| mVelocityTracker = VelocityTracker.obtain(); |
| } else { |
| mVelocityTracker.clear(); |
| } |
| } |
| |
| @Override |
| public void computeScroll() { |
| if (mScroller.computeScrollOffset()) { |
| // This is called at drawing time by ViewGroup. |
| int oldX = mScrollX; |
| int oldY = mOwnScrollY; |
| int x = mScroller.getCurrX(); |
| int y = mScroller.getCurrY(); |
| |
| if (oldX != x || oldY != y) { |
| final int range = getScrollRange(); |
| if (y < 0 && oldY >= 0 || y > range && oldY <= range) { |
| float currVelocity = mScroller.getCurrVelocity(); |
| if (currVelocity >= mMinimumVelocity) { |
| mMaxOverScroll = Math.abs(currVelocity) / 1000 * mOverflingDistance; |
| } |
| } |
| |
| overScrollBy(x - oldX, y - oldY, oldX, oldY, 0, range, |
| 0, (int) (mMaxOverScroll), false); |
| onScrollChanged(mScrollX, mOwnScrollY, oldX, oldY); |
| } |
| |
| // Keep on drawing until the animation has finished. |
| postInvalidateOnAnimation(); |
| } |
| } |
| |
| @Override |
| protected boolean overScrollBy(int deltaX, int deltaY, |
| int scrollX, int scrollY, |
| int scrollRangeX, int scrollRangeY, |
| int maxOverScrollX, int maxOverScrollY, |
| boolean isTouchEvent) { |
| |
| int newScrollY = scrollY + deltaY; |
| |
| final int top = -maxOverScrollY; |
| final int bottom = maxOverScrollY + scrollRangeY; |
| |
| boolean clampedY = false; |
| if (newScrollY > bottom) { |
| newScrollY = bottom; |
| clampedY = true; |
| } else if (newScrollY < top) { |
| newScrollY = top; |
| clampedY = true; |
| } |
| |
| onOverScrolled(0, newScrollY, false, clampedY); |
| |
| return clampedY; |
| } |
| |
| /** |
| * Set the amount of overScrolled pixels which will force the view to apply a rubber-banded |
| * overscroll effect based on numPixels. By default this will also cancel animations on the |
| * same overScroll edge. |
| * |
| * @param numPixels The amount of pixels to overScroll by. These will be scaled according to |
| * the rubber-banding logic. |
| * @param onTop Should the effect be applied on top of the scroller. |
| * @param animate Should an animation be performed. |
| */ |
| public void setOverScrolledPixels(float numPixels, boolean onTop, boolean animate) { |
| setOverScrollAmount(numPixels * getRubberBandFactor(onTop), onTop, animate, true); |
| } |
| |
| /** |
| * Set the effective overScroll amount which will be directly reflected in the layout. |
| * By default this will also cancel animations on the same overScroll edge. |
| * |
| * @param amount The amount to overScroll by. |
| * @param onTop Should the effect be applied on top of the scroller. |
| * @param animate Should an animation be performed. |
| */ |
| public void setOverScrollAmount(float amount, boolean onTop, boolean animate) { |
| setOverScrollAmount(amount, onTop, animate, true); |
| } |
| |
| /** |
| * Set the effective overScroll amount which will be directly reflected in the layout. |
| * |
| * @param amount The amount to overScroll by. |
| * @param onTop Should the effect be applied on top of the scroller. |
| * @param animate Should an animation be performed. |
| * @param cancelAnimators Should running animations be cancelled. |
| */ |
| public void setOverScrollAmount(float amount, boolean onTop, boolean animate, |
| boolean cancelAnimators) { |
| setOverScrollAmount(amount, onTop, animate, cancelAnimators, isRubberbanded(onTop)); |
| } |
| |
| /** |
| * Set the effective overScroll amount which will be directly reflected in the layout. |
| * |
| * @param amount The amount to overScroll by. |
| * @param onTop Should the effect be applied on top of the scroller. |
| * @param animate Should an animation be performed. |
| * @param cancelAnimators Should running animations be cancelled. |
| * @param isRubberbanded The value which will be passed to |
| * {@link OnOverscrollTopChangedListener#onOverscrollTopChanged} |
| */ |
| public void setOverScrollAmount(float amount, boolean onTop, boolean animate, |
| boolean cancelAnimators, boolean isRubberbanded) { |
| if (cancelAnimators) { |
| mStateAnimator.cancelOverScrollAnimators(onTop); |
| } |
| setOverScrollAmountInternal(amount, onTop, animate, isRubberbanded); |
| } |
| |
| private void setOverScrollAmountInternal(float amount, boolean onTop, boolean animate, |
| boolean isRubberbanded) { |
| amount = Math.max(0, amount); |
| if (animate) { |
| mStateAnimator.animateOverScrollToAmount(amount, onTop, isRubberbanded); |
| } else { |
| setOverScrolledPixels(amount / getRubberBandFactor(onTop), onTop); |
| mAmbientState.setOverScrollAmount(amount, onTop); |
| if (onTop) { |
| notifyOverscrollTopListener(amount, isRubberbanded); |
| } |
| requestChildrenUpdate(); |
| } |
| } |
| |
| private void notifyOverscrollTopListener(float amount, boolean isRubberbanded) { |
| mExpandHelper.onlyObserveMovements(amount > 1.0f); |
| if (mDontReportNextOverScroll) { |
| mDontReportNextOverScroll = false; |
| return; |
| } |
| if (mOverscrollTopChangedListener != null) { |
| mOverscrollTopChangedListener.onOverscrollTopChanged(amount, isRubberbanded); |
| } |
| } |
| |
| public void setOverscrollTopChangedListener( |
| OnOverscrollTopChangedListener overscrollTopChangedListener) { |
| mOverscrollTopChangedListener = overscrollTopChangedListener; |
| } |
| |
| public float getCurrentOverScrollAmount(boolean top) { |
| return mAmbientState.getOverScrollAmount(top); |
| } |
| |
| public float getCurrentOverScrolledPixels(boolean top) { |
| return top? mOverScrolledTopPixels : mOverScrolledBottomPixels; |
| } |
| |
| private void setOverScrolledPixels(float amount, boolean onTop) { |
| if (onTop) { |
| mOverScrolledTopPixels = amount; |
| } else { |
| mOverScrolledBottomPixels = amount; |
| } |
| } |
| |
| private void customScrollTo(int y) { |
| mOwnScrollY = y; |
| updateChildren(); |
| } |
| |
| @Override |
| protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, boolean clampedY) { |
| // Treat animating scrolls differently; see #computeScroll() for why. |
| if (!mScroller.isFinished()) { |
| final int oldX = mScrollX; |
| final int oldY = mOwnScrollY; |
| mScrollX = scrollX; |
| mOwnScrollY = scrollY; |
| if (clampedY) { |
| springBack(); |
| } else { |
| onScrollChanged(mScrollX, mOwnScrollY, oldX, oldY); |
| invalidateParentIfNeeded(); |
| updateChildren(); |
| float overScrollTop = getCurrentOverScrollAmount(true); |
| if (mOwnScrollY < 0) { |
| notifyOverscrollTopListener(-mOwnScrollY, isRubberbanded(true)); |
| } else { |
| notifyOverscrollTopListener(overScrollTop, isRubberbanded(true)); |
| } |
| } |
| } else { |
| customScrollTo(scrollY); |
| scrollTo(scrollX, mScrollY); |
| } |
| } |
| |
| private void springBack() { |
| int scrollRange = getScrollRange(); |
| boolean overScrolledTop = mOwnScrollY <= 0; |
| boolean overScrolledBottom = mOwnScrollY >= scrollRange; |
| if (overScrolledTop || overScrolledBottom) { |
| boolean onTop; |
| float newAmount; |
| if (overScrolledTop) { |
| onTop = true; |
| newAmount = -mOwnScrollY; |
| mOwnScrollY = 0; |
| mDontReportNextOverScroll = true; |
| } else { |
| onTop = false; |
| newAmount = mOwnScrollY - scrollRange; |
| mOwnScrollY = scrollRange; |
| } |
| setOverScrollAmount(newAmount, onTop, false); |
| setOverScrollAmount(0.0f, onTop, true); |
| mScroller.forceFinished(true); |
| } |
| } |
| |
| private int getScrollRange() { |
| int scrollRange = 0; |
| ExpandableView firstChild = (ExpandableView) getFirstChildNotGone(); |
| if (firstChild != null) { |
| int contentHeight = getContentHeight(); |
| int firstChildMaxExpandHeight = getMaxExpandHeight(firstChild); |
| scrollRange = Math.max(0, contentHeight - mMaxLayoutHeight + mBottomStackPeekSize |
| + mBottomStackSlowDownHeight); |
| if (scrollRange > 0) { |
| View lastChild = getLastChildNotGone(); |
| // We want to at least be able collapse the first item and not ending in a weird |
| // end state. |
| scrollRange = Math.max(scrollRange, firstChildMaxExpandHeight - mCollapsedSize); |
| } |
| } |
| return scrollRange; |
| } |
| |
| /** |
| * @return the first child which has visibility unequal to GONE |
| */ |
| private View getFirstChildNotGone() { |
| int childCount = getChildCount(); |
| for (int i = 0; i < childCount; i++) { |
| View child = getChildAt(i); |
| if (child.getVisibility() != View.GONE) { |
| return child; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * @return The first child which has visibility unequal to GONE which is currently below the |
| * given translationY or equal to it. |
| */ |
| private View getFirstChildBelowTranlsationY(float translationY) { |
| int childCount = getChildCount(); |
| for (int i = 0; i < childCount; i++) { |
| View child = getChildAt(i); |
| if (child.getVisibility() != View.GONE && child.getTranslationY() >= translationY) { |
| return child; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * @return the last child which has visibility unequal to GONE |
| */ |
| public View getLastChildNotGone() { |
| int childCount = getChildCount(); |
| for (int i = childCount - 1; i >= 0; i--) { |
| View child = getChildAt(i); |
| if (child.getVisibility() != View.GONE) { |
| return child; |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * @return the number of children which have visibility unequal to GONE |
| */ |
| public int getNotGoneChildCount() { |
| int childCount = getChildCount(); |
| int count = 0; |
| for (int i = 0; i < childCount; i++) { |
| View child = getChildAt(i); |
| if (child.getVisibility() != View.GONE) { |
| count++; |
| } |
| } |
| return count; |
| } |
| |
| private int getMaxExpandHeight(View view) { |
| if (view instanceof ExpandableNotificationRow) { |
| ExpandableNotificationRow row = (ExpandableNotificationRow) view; |
| return row.getIntrinsicHeight(); |
| } |
| return view.getHeight(); |
| } |
| |
| public int getContentHeight() { |
| return mContentHeight; |
| } |
| |
| private void updateContentHeight() { |
| int height = 0; |
| for (int i = 0; i < getChildCount(); i++) { |
| View child = getChildAt(i); |
| if (child.getVisibility() != View.GONE) { |
| if (height != 0) { |
| // add the padding before this element |
| height += mPaddingBetweenElements; |
| } |
| if (child instanceof ExpandableNotificationRow) { |
| ExpandableNotificationRow row = (ExpandableNotificationRow) child; |
| height += row.getIntrinsicHeight(); |
| } else if (child instanceof ExpandableView) { |
| ExpandableView expandableView = (ExpandableView) child; |
| height += expandableView.getActualHeight(); |
| } |
| } |
| } |
| mContentHeight = height + mTopPadding; |
| } |
| |
| /** |
| * Fling the scroll view |
| * |
| * @param velocityY The initial velocity in the Y direction. Positive |
| * numbers mean that the finger/cursor is moving down the screen, |
| * which means we want to scroll towards the top. |
| */ |
| private void fling(int velocityY) { |
| if (getChildCount() > 0) { |
| int scrollRange = getScrollRange(); |
| |
| float topAmount = getCurrentOverScrollAmount(true); |
| float bottomAmount = getCurrentOverScrollAmount(false); |
| if (velocityY < 0 && topAmount > 0) { |
| mOwnScrollY -= (int) topAmount; |
| mDontReportNextOverScroll = true; |
| setOverScrollAmount(0, true, false); |
| mMaxOverScroll = Math.abs(velocityY) / 1000f * getRubberBandFactor(true /* onTop */) |
| * mOverflingDistance + topAmount; |
| } else if (velocityY > 0 && bottomAmount > 0) { |
| mOwnScrollY += bottomAmount; |
| setOverScrollAmount(0, false, false); |
| mMaxOverScroll = Math.abs(velocityY) / 1000f |
| * getRubberBandFactor(false /* onTop */) * mOverflingDistance |
| + bottomAmount; |
| } else { |
| // it will be set once we reach the boundary |
| mMaxOverScroll = 0.0f; |
| } |
| mScroller.fling(mScrollX, mOwnScrollY, 1, velocityY, 0, 0, 0, |
| Math.max(0, scrollRange), 0, Integer.MAX_VALUE / 2); |
| |
| postInvalidateOnAnimation(); |
| } |
| } |
| |
| /** |
| * @return Whether a fling performed on the top overscroll edge lead to the expanded |
| * overScroll view (i.e QS). |
| */ |
| private boolean shouldOverScrollFling(int initialVelocity) { |
| float topOverScroll = getCurrentOverScrollAmount(true); |
| return mScrolledToTopOnFirstDown |
| && !mExpandedInThisMotion |
| && topOverScroll > mMinTopOverScrollToEscape |
| && initialVelocity > 0; |
| } |
| |
| public void updateTopPadding(float qsHeight, int scrollY, boolean animate) { |
| float start = qsHeight - scrollY + mNotificationTopPadding; |
| float stackHeight = getHeight() - start; |
| int minStackHeight = getMinStackHeight(); |
| if (stackHeight <= minStackHeight) { |
| float overflow = minStackHeight - stackHeight; |
| stackHeight = minStackHeight; |
| start = getHeight() - stackHeight; |
| setTranslationY(overflow); |
| mTopPaddingOverflow = overflow; |
| } else { |
| setTranslationY(0); |
| mTopPaddingOverflow = 0; |
| } |
| setTopPadding(clampPadding((int) start), animate); |
| } |
| |
| public int getNotificationTopPadding() { |
| return mNotificationTopPadding; |
| } |
| |
| public int getMinStackHeight() { |
| return mCollapsedSize + mBottomStackPeekSize + mCollapseSecondCardPadding; |
| } |
| |
| public float getTopPaddingOverflow() { |
| return mTopPaddingOverflow; |
| } |
| |
| public int getPeekHeight() { |
| return mIntrinsicPadding + mCollapsedSize + mBottomStackPeekSize |
| + mCollapseSecondCardPadding; |
| } |
| |
| private int clampPadding(int desiredPadding) { |
| return Math.max(desiredPadding, mIntrinsicPadding); |
| } |
| |
| private float getRubberBandFactor(boolean onTop) { |
| if (!onTop) { |
| return RUBBER_BAND_FACTOR_NORMAL; |
| } |
| if (mExpandedInThisMotion) { |
| return RUBBER_BAND_FACTOR_AFTER_EXPAND; |
| } else if (mIsExpansionChanging) { |
| return RUBBER_BAND_FACTOR_ON_PANEL_EXPAND; |
| } else if (mScrolledToTopOnFirstDown) { |
| return 1.0f; |
| } |
| return RUBBER_BAND_FACTOR_NORMAL; |
| } |
| |
| /** |
| * Accompanying function for {@link #getRubberBandFactor}: Returns true if the overscroll is |
| * rubberbanded, false if it is technically an overscroll but rather a motion to expand the |
| * overscroll view (e.g. expand QS). |
| */ |
| private boolean isRubberbanded(boolean onTop) { |
| return !onTop || mExpandedInThisMotion || mIsExpansionChanging |
| || !mScrolledToTopOnFirstDown; |
| } |
| |
| private void endDrag() { |
| setIsBeingDragged(false); |
| |
| recycleVelocityTracker(); |
| |
| if (getCurrentOverScrollAmount(true /* onTop */) > 0) { |
| setOverScrollAmount(0, true /* onTop */, true /* animate */); |
| } |
| if (getCurrentOverScrollAmount(false /* onTop */) > 0) { |
| setOverScrollAmount(0, false /* onTop */, true /* animate */); |
| } |
| } |
| |
| private void transformTouchEvent(MotionEvent ev, View sourceView, View targetView) { |
| ev.offsetLocation(sourceView.getX(), sourceView.getY()); |
| ev.offsetLocation(-targetView.getX(), -targetView.getY()); |
| } |
| |
| @Override |
| public boolean onInterceptTouchEvent(MotionEvent ev) { |
| if (mInterceptDelegateEnabled) { |
| transformTouchEvent(ev, this, mScrollView); |
| if (mScrollView.onInterceptTouchEvent(ev)) { |
| mDelegateToScrollView = true; |
| removeLongPressCallback(); |
| return true; |
| } |
| transformTouchEvent(ev, mScrollView, this); |
| } |
| initDownStates(ev); |
| boolean expandWantsIt = false; |
| if (!mSwipingInProgress && !mOnlyScrollingInThisMotion && isScrollingEnabled()) { |
| expandWantsIt = mExpandHelper.onInterceptTouchEvent(ev); |
| } |
| boolean scrollWantsIt = false; |
| if (!mSwipingInProgress && !mExpandingNotification) { |
| scrollWantsIt = onInterceptTouchEventScroll(ev); |
| } |
| boolean swipeWantsIt = false; |
| if (!mIsBeingDragged |
| && !mExpandingNotification |
| && !mExpandedInThisMotion |
| && !mOnlyScrollingInThisMotion) { |
| swipeWantsIt = mSwipeHelper.onInterceptTouchEvent(ev); |
| } |
| return swipeWantsIt || scrollWantsIt || expandWantsIt || super.onInterceptTouchEvent(ev); |
| } |
| |
| private void initDownStates(MotionEvent ev) { |
| if (ev.getAction() == MotionEvent.ACTION_DOWN) { |
| mExpandedInThisMotion = false; |
| mOnlyScrollingInThisMotion = !mScroller.isFinished(); |
| mDisallowScrollingInThisMotion = false; |
| } |
| } |
| |
| @Override |
| protected void onViewRemoved(View child) { |
| super.onViewRemoved(child); |
| mStackScrollAlgorithm.notifyChildrenChanged(this); |
| if (mChangePositionInProgress) { |
| // This is only a position change, don't do anything special |
| return; |
| } |
| ((ExpandableView) child).setOnHeightChangedListener(null); |
| mCurrentStackScrollState.removeViewStateForView(child); |
| updateScrollStateForRemovedChild(child); |
| boolean animationGenerated = generateRemoveAnimation(child); |
| if (animationGenerated && !mSwipedOutViews.contains(child)) { |
| // Add this view to an overlay in order to ensure that it will still be temporary |
| // drawn when removed |
| getOverlay().add(child); |
| } |
| } |
| |
| /** |
| * Generate a remove animation for a child view. |
| * |
| * @param child The view to generate the remove animation for. |
| * @return Whether an animation was generated. |
| */ |
| private boolean generateRemoveAnimation(View child) { |
| if (mIsExpanded && mAnimationsEnabled) { |
| if (!mChildrenToAddAnimated.contains(child)) { |
| // Generate Animations |
| mChildrenToRemoveAnimated.add(child); |
| mNeedsAnimation = true; |
| return true; |
| } else { |
| mChildrenToAddAnimated.remove(child); |
| return false; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Updates the scroll position when a child was removed |
| * |
| * @param removedChild the removed child |
| */ |
| private void updateScrollStateForRemovedChild(View removedChild) { |
| int startingPosition = getPositionInLinearLayout(removedChild); |
| int childHeight = getIntrinsicHeight(removedChild) + mPaddingBetweenElements; |
| int endPosition = startingPosition + childHeight; |
| if (endPosition <= mOwnScrollY) { |
| // This child is fully scrolled of the top, so we have to deduct its height from the |
| // scrollPosition |
| mOwnScrollY -= childHeight; |
| } else if (startingPosition < mOwnScrollY) { |
| // This child is currently being scrolled into, set the scroll position to the start of |
| // this child |
| mOwnScrollY = startingPosition; |
| } |
| } |
| |
| private int getIntrinsicHeight(View view) { |
| if (view instanceof ExpandableView) { |
| ExpandableView expandableView = (ExpandableView) view; |
| return expandableView.getIntrinsicHeight(); |
| } |
| return view.getHeight(); |
| } |
| |
| private int getPositionInLinearLayout(View requestedChild) { |
| int position = 0; |
| for (int i = 0; i < getChildCount(); i++) { |
| View child = getChildAt(i); |
| if (child == requestedChild) { |
| return position; |
| } |
| if (child.getVisibility() != View.GONE) { |
| position += child.getHeight(); |
| if (i < getChildCount()-1) { |
| position += mPaddingBetweenElements; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| @Override |
| protected void onViewAdded(View child) { |
| super.onViewAdded(child); |
| mStackScrollAlgorithm.notifyChildrenChanged(this); |
| ((ExpandableView) child).setOnHeightChangedListener(this); |
| generateAddAnimation(child); |
| } |
| |
| public void setAnimationsEnabled(boolean animationsEnabled) { |
| mAnimationsEnabled = animationsEnabled; |
| } |
| |
| public boolean isAddOrRemoveAnimationPending() { |
| return mNeedsAnimation |
| && (!mChildrenToAddAnimated.isEmpty() || !mChildrenToRemoveAnimated.isEmpty()); |
| } |
| /** |
| * Generate an animation for an added child view. |
| * |
| * @param child The view to be added. |
| */ |
| public void generateAddAnimation(View child) { |
| if (mIsExpanded && mAnimationsEnabled && !mChangePositionInProgress) { |
| // Generate Animations |
| mChildrenToAddAnimated.add(child); |
| mNeedsAnimation = true; |
| } |
| } |
| |
| /** |
| * Change the position of child to a new location |
| * |
| * @param child the view to change the position for |
| * @param newIndex the new index |
| */ |
| public void changeViewPosition(View child, int newIndex) { |
| if (child != null && child.getParent() == this) { |
| mChangePositionInProgress = true; |
| removeView(child); |
| addView(child, newIndex); |
| mChangePositionInProgress = false; |
| if (mIsExpanded && mAnimationsEnabled) { |
| mChildrenChangingPositions.add(child); |
| mNeedsAnimation = true; |
| } |
| } |
| } |
| |
| private void startAnimationToState() { |
| if (mNeedsAnimation) { |
| generateChildHierarchyEvents(); |
| mNeedsAnimation = false; |
| } |
| if (!mAnimationEvents.isEmpty() || isCurrentlyAnimating()) { |
| mStateAnimator.startAnimationForEvents(mAnimationEvents, mCurrentStackScrollState); |
| mAnimationEvents.clear(); |
| } else { |
| applyCurrentState(); |
| } |
| } |
| |
| private void generateChildHierarchyEvents() { |
| generateChildRemovalEvents(); |
| generateChildAdditionEvents(); |
| generatePositionChangeEvents(); |
| generateSnapBackEvents(); |
| generateDragEvents(); |
| generateTopPaddingEvent(); |
| generateActivateEvent(); |
| generateDimmedEvent(); |
| generateDarkEvent(); |
| mNeedsAnimation = false; |
| } |
| |
| private void generateSnapBackEvents() { |
| for (View child : mSnappedBackChildren) { |
| mAnimationEvents.add(new AnimationEvent(child, |
| AnimationEvent.ANIMATION_TYPE_SNAP_BACK)); |
| } |
| mSnappedBackChildren.clear(); |
| } |
| |
| private void generateDragEvents() { |
| for (View child : mDragAnimPendingChildren) { |
| mAnimationEvents.add(new AnimationEvent(child, |
| AnimationEvent.ANIMATION_TYPE_START_DRAG)); |
| } |
| mDragAnimPendingChildren.clear(); |
| } |
| |
| private void generateChildRemovalEvents() { |
| for (View child : mChildrenToRemoveAnimated) { |
| boolean childWasSwipedOut = mSwipedOutViews.contains(child); |
| int animationType = childWasSwipedOut |
| ? AnimationEvent.ANIMATION_TYPE_REMOVE_SWIPED_OUT |
| : AnimationEvent.ANIMATION_TYPE_REMOVE; |
| AnimationEvent event = new AnimationEvent(child, animationType); |
| |
| // we need to know the view after this one |
| event.viewAfterChangingView = getFirstChildBelowTranlsationY(child.getTranslationY()); |
| mAnimationEvents.add(event); |
| } |
| mSwipedOutViews.clear(); |
| mChildrenToRemoveAnimated.clear(); |
| } |
| |
| private void generatePositionChangeEvents() { |
| for (View child : mChildrenChangingPositions) { |
| mAnimationEvents.add(new AnimationEvent(child, |
| AnimationEvent.ANIMATION_TYPE_CHANGE_POSITION)); |
| } |
| mChildrenChangingPositions.clear(); |
| } |
| |
| private void generateChildAdditionEvents() { |
| for (View child : mChildrenToAddAnimated) { |
| mAnimationEvents.add(new AnimationEvent(child, |
| AnimationEvent.ANIMATION_TYPE_ADD)); |
| } |
| mChildrenToAddAnimated.clear(); |
| } |
| |
| private void generateTopPaddingEvent() { |
| if (mTopPaddingNeedsAnimation) { |
| mAnimationEvents.add( |
| new AnimationEvent(null, AnimationEvent.ANIMATION_TYPE_TOP_PADDING_CHANGED)); |
| } |
| mTopPaddingNeedsAnimation = false; |
| } |
| |
| private void generateActivateEvent() { |
| if (mActivateNeedsAnimation) { |
| mAnimationEvents.add( |
| new AnimationEvent(null, AnimationEvent.ANIMATION_TYPE_ACTIVATED_CHILD)); |
| } |
| mActivateNeedsAnimation = false; |
| } |
| |
| private void generateDimmedEvent() { |
| if (mDimmedNeedsAnimation) { |
| mAnimationEvents.add( |
| new AnimationEvent(null, AnimationEvent.ANIMATION_TYPE_DIMMED)); |
| } |
| mDimmedNeedsAnimation = false; |
| } |
| |
| private void generateDarkEvent() { |
| if (mDarkNeedsAnimation) { |
| mAnimationEvents.add( |
| new AnimationEvent(null, AnimationEvent.ANIMATION_TYPE_DARK)); |
| } |
| mDarkNeedsAnimation = false; |
| } |
| |
| private boolean onInterceptTouchEventScroll(MotionEvent ev) { |
| if (!isScrollingEnabled()) { |
| return false; |
| } |
| /* |
| * This method JUST determines whether we want to intercept the motion. |
| * If we return true, onMotionEvent will be called and we do the actual |
| * scrolling there. |
| */ |
| |
| /* |
| * Shortcut the most recurring case: the user is in the dragging |
| * state and he is moving his finger. We want to intercept this |
| * motion. |
| */ |
| final int action = ev.getAction(); |
| if ((action == MotionEvent.ACTION_MOVE) && (mIsBeingDragged)) { |
| return true; |
| } |
| |
| switch (action & MotionEvent.ACTION_MASK) { |
| case MotionEvent.ACTION_MOVE: { |
| /* |
| * mIsBeingDragged == false, otherwise the shortcut would have caught it. Check |
| * whether the user has moved far enough from his original down touch. |
| */ |
| |
| /* |
| * Locally do absolute value. mLastMotionY is set to the y value |
| * of the down event. |
| */ |
| final int activePointerId = mActivePointerId; |
| if (activePointerId == INVALID_POINTER) { |
| // If we don't have a valid id, the touch down wasn't on content. |
| break; |
| } |
| |
| final int pointerIndex = ev.findPointerIndex(activePointerId); |
| if (pointerIndex == -1) { |
| Log.e(TAG, "Invalid pointerId=" + activePointerId |
| + " in onInterceptTouchEvent"); |
| break; |
| } |
| |
| final int y = (int) ev.getY(pointerIndex); |
| final int x = (int) ev.getX(pointerIndex); |
| final int yDiff = Math.abs(y - mLastMotionY); |
| final int xDiff = Math.abs(x - mDownX); |
| if (yDiff > mTouchSlop && yDiff > xDiff) { |
| setIsBeingDragged(true); |
| mLastMotionY = y; |
| mDownX = x; |
| initVelocityTrackerIfNotExists(); |
| mVelocityTracker.addMovement(ev); |
| } |
| break; |
| } |
| |
| case MotionEvent.ACTION_DOWN: { |
| final int y = (int) ev.getY(); |
| if (getChildAtPosition(ev.getX(), y) == null) { |
| setIsBeingDragged(false); |
| recycleVelocityTracker(); |
| break; |
| } |
| |
| /* |
| * Remember location of down touch. |
| * ACTION_DOWN always refers to pointer index 0. |
| */ |
| mLastMotionY = y; |
| mDownX = (int) ev.getX(); |
| mActivePointerId = ev.getPointerId(0); |
| mScrolledToTopOnFirstDown = isScrolledToTop(); |
| |
| initOrResetVelocityTracker(); |
| mVelocityTracker.addMovement(ev); |
| /* |
| * If being flinged and user touches the screen, initiate drag; |
| * otherwise don't. mScroller.isFinished should be false when |
| * being flinged. |
| */ |
| boolean isBeingDragged = !mScroller.isFinished(); |
| setIsBeingDragged(isBeingDragged); |
| break; |
| } |
| |
| case MotionEvent.ACTION_CANCEL: |
| case MotionEvent.ACTION_UP: |
| /* Release the drag */ |
| setIsBeingDragged(false); |
| mActivePointerId = INVALID_POINTER; |
| recycleVelocityTracker(); |
| if (mScroller.springBack(mScrollX, mOwnScrollY, 0, 0, 0, getScrollRange())) { |
| postInvalidateOnAnimation(); |
| } |
| break; |
| case MotionEvent.ACTION_POINTER_UP: |
| onSecondaryPointerUp(ev); |
| break; |
| } |
| |
| /* |
| * The only time we want to intercept motion events is if we are in the |
| * drag mode. |
| */ |
| return mIsBeingDragged; |
| } |
| |
| /** |
| * @return Whether the specified motion event is actually happening over the content. |
| */ |
| private boolean isInContentBounds(MotionEvent event) { |
| return event.getY() < getHeight() - getEmptyBottomMargin(); |
| } |
| |
| private void setIsBeingDragged(boolean isDragged) { |
| mIsBeingDragged = isDragged; |
| if (isDragged) { |
| requestDisallowInterceptTouchEvent(true); |
| removeLongPressCallback(); |
| } |
| } |
| |
| @Override |
| public void onWindowFocusChanged(boolean hasWindowFocus) { |
| super.onWindowFocusChanged(hasWindowFocus); |
| if (!hasWindowFocus) { |
| removeLongPressCallback(); |
| } |
| } |
| |
| public void removeLongPressCallback() { |
| mSwipeHelper.removeLongPressCallback(); |
| } |
| |
| @Override |
| public boolean isScrolledToTop() { |
| return mOwnScrollY == 0; |
| } |
| |
| @Override |
| public boolean isScrolledToBottom() { |
| return mOwnScrollY >= getScrollRange(); |
| } |
| |
| @Override |
| public View getHostView() { |
| return this; |
| } |
| |
| public int getEmptyBottomMargin() { |
| int emptyMargin = mMaxLayoutHeight - mContentHeight - mBottomStackPeekSize; |
| if (needsHeightAdaption()) { |
| emptyMargin -= mBottomStackSlowDownHeight; |
| } else { |
| emptyMargin -= mCollapseSecondCardPadding; |
| } |
| return Math.max(emptyMargin, 0); |
| } |
| |
| public void onExpansionStarted() { |
| mIsExpansionChanging = true; |
| mStackScrollAlgorithm.onExpansionStarted(mCurrentStackScrollState); |
| } |
| |
| public void onExpansionStopped() { |
| mIsExpansionChanging = false; |
| mStackScrollAlgorithm.onExpansionStopped(); |
| if (!mIsExpanded) { |
| mOwnScrollY = 0; |
| } |
| } |
| |
| private void setIsExpanded(boolean isExpanded) { |
| mIsExpanded = isExpanded; |
| mStackScrollAlgorithm.setIsExpanded(isExpanded); |
| } |
| |
| @Override |
| public void onHeightChanged(ExpandableView view) { |
| updateContentHeight(); |
| updateScrollPositionOnExpandInBottom(view); |
| clampScrollPosition(); |
| notifyHeightChangeListener(view); |
| requestChildrenUpdate(); |
| } |
| |
| private void updateScrollPositionOnExpandInBottom(ExpandableView view) { |
| if (view instanceof ExpandableNotificationRow) { |
| ExpandableNotificationRow row = (ExpandableNotificationRow) view; |
| if (row.isUserLocked()) { |
| // We are actually expanding this view |
| float endPosition = row.getTranslationY() + row.getActualHeight(); |
| int stackEnd = mMaxLayoutHeight - mBottomStackPeekSize - |
| mBottomStackSlowDownHeight; |
| if (endPosition > stackEnd) { |
| mOwnScrollY += endPosition - stackEnd; |
| mDisallowScrollingInThisMotion = true; |
| } |
| } |
| } |
| } |
| |
| public void setOnHeightChangedListener( |
| ExpandableView.OnHeightChangedListener mOnHeightChangedListener) { |
| this.mOnHeightChangedListener = mOnHeightChangedListener; |
| } |
| |
| public void onChildAnimationFinished() { |
| requestChildrenUpdate(); |
| } |
| |
| /** |
| * See {@link AmbientState#setDimmed}. |
| */ |
| public void setDimmed(boolean dimmed, boolean animate) { |
| mStackScrollAlgorithm.setDimmed(dimmed); |
| mAmbientState.setDimmed(dimmed); |
| updatePadding(dimmed); |
| if (animate && mAnimationsEnabled) { |
| mDimmedNeedsAnimation = true; |
| mNeedsAnimation = true; |
| } |
| requestChildrenUpdate(); |
| } |
| |
| /** |
| * See {@link AmbientState#setActivatedChild}. |
| */ |
| public void setActivatedChild(ActivatableNotificationView activatedChild) { |
| mAmbientState.setActivatedChild(activatedChild); |
| if (mAnimationsEnabled) { |
| mActivateNeedsAnimation = true; |
| mNeedsAnimation = true; |
| } |
| requestChildrenUpdate(); |
| } |
| |
| public ActivatableNotificationView getActivatedChild() { |
| return mAmbientState.getActivatedChild(); |
| } |
| |
| private void applyCurrentState() { |
| mCurrentStackScrollState.apply(); |
| if (mListener != null) { |
| mListener.onChildLocationsChanged(this); |
| } |
| } |
| |
| public void setSpeedBumpView(SpeedBumpView speedBumpView) { |
| mSpeedBumpView = speedBumpView; |
| addView(speedBumpView); |
| } |
| |
| private void updateSpeedBump(boolean visible) { |
| boolean notGoneBefore = mSpeedBumpView.getVisibility() != GONE; |
| if (visible != notGoneBefore) { |
| int newVisibility = visible ? VISIBLE : GONE; |
| mSpeedBumpView.setVisibility(newVisibility); |
| if (visible) { |
| // Make invisible to ensure that the appear animation is played. |
| mSpeedBumpView.setInvisible(); |
| if (!mIsExpansionChanging) { |
| generateAddAnimation(mSpeedBumpView); |
| } |
| } else { |
| mSpeedBumpView.performVisibilityAnimation(false); |
| generateRemoveAnimation(mSpeedBumpView); |
| } |
| } |
| } |
| |
| public void goToFullShade() { |
| updateSpeedBump(true); |
| } |
| |
| public void cancelExpandHelper() { |
| mExpandHelper.cancel(); |
| } |
| |
| public void setIntrinsicPadding(int intrinsicPadding) { |
| mIntrinsicPadding = intrinsicPadding; |
| } |
| |
| public int getIntrinsicPadding() { |
| return mIntrinsicPadding; |
| } |
| |
| /** |
| * @return the y position of the first notification |
| */ |
| public float getNotificationsTopY() { |
| return mTopPadding + getTranslationY(); |
| } |
| |
| @Override |
| public boolean shouldDelayChildPressedState() { |
| return true; |
| } |
| |
| public void setScrimAlpha(float progress) { |
| mAmbientState.setScrimAmount(progress); |
| requestChildrenUpdate(); |
| } |
| |
| /** |
| * See {@link AmbientState#setDark}. |
| */ |
| public void setDark(boolean dark, boolean animate) { |
| mAmbientState.setDark(dark); |
| if (animate && mAnimationsEnabled) { |
| mDarkNeedsAnimation = true; |
| mNeedsAnimation = true; |
| } |
| requestChildrenUpdate(); |
| } |
| |
| /** |
| * A listener that is notified when some child locations might have changed. |
| */ |
| public interface OnChildLocationsChangedListener { |
| public void onChildLocationsChanged(NotificationStackScrollLayout stackScrollLayout); |
| } |
| |
| /** |
| * A listener that gets notified when the overscroll at the top has changed. |
| */ |
| public interface OnOverscrollTopChangedListener { |
| |
| /** |
| * Notifies a listener that the overscroll has changed. |
| * |
| * @param amount the amount of overscroll, in pixels |
| * @param isRubberbanded if true, this is a rubberbanded overscroll; if false, this is an |
| * unrubberbanded motion to directly expand overscroll view (e.g expand |
| * QS) |
| */ |
| public void onOverscrollTopChanged(float amount, boolean isRubberbanded); |
| |
| /** |
| * Notify a listener that the scroller wants to escape from the scrolling motion and |
| * start a fling animation to the expanded or collapsed overscroll view (e.g expand the QS) |
| * |
| * @param velocity The velocity that the Scroller had when over flinging |
| * @param open Should the fling open or close the overscroll view. |
| */ |
| public void flingTopOverscroll(float velocity, boolean open); |
| } |
| |
| static class AnimationEvent { |
| |
| static AnimationFilter[] FILTERS = new AnimationFilter[] { |
| |
| // ANIMATION_TYPE_ADD |
| new AnimationFilter() |
| .animateAlpha() |
| .animateHeight() |
| .animateTopInset() |
| .animateY() |
| .animateZ() |
| .hasDelays(), |
| |
| // ANIMATION_TYPE_REMOVE |
| new AnimationFilter() |
| .animateAlpha() |
| .animateHeight() |
| .animateTopInset() |
| .animateY() |
| .animateZ() |
| .hasDelays(), |
| |
| // ANIMATION_TYPE_REMOVE_SWIPED_OUT |
| new AnimationFilter() |
| .animateAlpha() |
| .animateHeight() |
| .animateTopInset() |
| .animateY() |
| .animateZ() |
| .hasDelays(), |
| |
| // ANIMATION_TYPE_TOP_PADDING_CHANGED |
| new AnimationFilter() |
| .animateAlpha() |
| .animateHeight() |
| .animateTopInset() |
| .animateY() |
| .animateDimmed() |
| .animateScale() |
| .animateZ(), |
| |
| // ANIMATION_TYPE_START_DRAG |
| new AnimationFilter() |
| .animateAlpha(), |
| |
| // ANIMATION_TYPE_SNAP_BACK |
| new AnimationFilter() |
| .animateAlpha(), |
| |
| // ANIMATION_TYPE_ACTIVATED_CHILD |
| new AnimationFilter() |
| .animateScale() |
| .animateAlpha(), |
| |
| // ANIMATION_TYPE_DIMMED |
| new AnimationFilter() |
| .animateY() |
| .animateScale() |
| .animateDimmed(), |
| |
| // ANIMATION_TYPE_CHANGE_POSITION |
| new AnimationFilter() |
| .animateAlpha() |
| .animateHeight() |
| .animateTopInset() |
| .animateY() |
| .animateZ(), |
| |
| // ANIMATION_TYPE_DARK |
| new AnimationFilter() |
| .animateDark(), |
| }; |
| |
| static int[] LENGTHS = new int[] { |
| |
| // ANIMATION_TYPE_ADD |
| StackStateAnimator.ANIMATION_DURATION_APPEAR_DISAPPEAR, |
| |
| // ANIMATION_TYPE_REMOVE |
| StackStateAnimator.ANIMATION_DURATION_APPEAR_DISAPPEAR, |
| |
| // ANIMATION_TYPE_REMOVE_SWIPED_OUT |
| StackStateAnimator.ANIMATION_DURATION_STANDARD, |
| |
| // ANIMATION_TYPE_TOP_PADDING_CHANGED |
| StackStateAnimator.ANIMATION_DURATION_STANDARD, |
| |
| // ANIMATION_TYPE_START_DRAG |
| StackStateAnimator.ANIMATION_DURATION_STANDARD, |
| |
| // ANIMATION_TYPE_SNAP_BACK |
| StackStateAnimator.ANIMATION_DURATION_STANDARD, |
| |
| // ANIMATION_TYPE_ACTIVATED_CHILD |
| StackStateAnimator.ANIMATION_DURATION_DIMMED_ACTIVATED, |
| |
| // ANIMATION_TYPE_DIMMED |
| StackStateAnimator.ANIMATION_DURATION_DIMMED_ACTIVATED, |
| |
| // ANIMATION_TYPE_CHANGE_POSITION |
| StackStateAnimator.ANIMATION_DURATION_STANDARD, |
| |
| // ANIMATION_TYPE_DARK |
| StackStateAnimator.ANIMATION_DURATION_STANDARD, |
| }; |
| |
| static final int ANIMATION_TYPE_ADD = 0; |
| static final int ANIMATION_TYPE_REMOVE = 1; |
| static final int ANIMATION_TYPE_REMOVE_SWIPED_OUT = 2; |
| static final int ANIMATION_TYPE_TOP_PADDING_CHANGED = 3; |
| static final int ANIMATION_TYPE_START_DRAG = 4; |
| static final int ANIMATION_TYPE_SNAP_BACK = 5; |
| static final int ANIMATION_TYPE_ACTIVATED_CHILD = 6; |
| static final int ANIMATION_TYPE_DIMMED = 7; |
| static final int ANIMATION_TYPE_CHANGE_POSITION = 8; |
| static final int ANIMATION_TYPE_DARK = 9; |
| |
| final long eventStartTime; |
| final View changingView; |
| final int animationType; |
| final AnimationFilter filter; |
| final long length; |
| View viewAfterChangingView; |
| |
| AnimationEvent(View view, int type) { |
| eventStartTime = AnimationUtils.currentAnimationTimeMillis(); |
| changingView = view; |
| animationType = type; |
| filter = FILTERS[type]; |
| length = LENGTHS[type]; |
| } |
| |
| /** |
| * Combines the length of several animation events into a single value. |
| * |
| * @param events The events of the lengths to combine. |
| * @return The combined length. This is just the maximum of all length. |
| */ |
| static long combineLength(ArrayList<AnimationEvent> events) { |
| long length = 0; |
| int size = events.size(); |
| for (int i = 0; i < size; i++) { |
| length = Math.max(length, events.get(i).length); |
| } |
| return length; |
| } |
| } |
| |
| } |
