| /* |
| * Copyright (C) 2012 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.phone; |
| |
| import android.animation.Animator; |
| import android.animation.AnimatorListenerAdapter; |
| import android.animation.ObjectAnimator; |
| import android.animation.ValueAnimator; |
| import android.content.Context; |
| import android.content.res.Configuration; |
| import android.content.res.Resources; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.view.MotionEvent; |
| import android.view.ViewConfiguration; |
| import android.view.animation.AnimationUtils; |
| import android.view.animation.Interpolator; |
| import android.widget.FrameLayout; |
| |
| import com.android.systemui.R; |
| import com.android.systemui.statusbar.FlingAnimationUtils; |
| import com.android.systemui.statusbar.StatusBarState; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| |
| public abstract class PanelView extends FrameLayout { |
| public static final boolean DEBUG = PanelBar.DEBUG; |
| public static final String TAG = PanelView.class.getSimpleName(); |
| protected float mOverExpansion; |
| |
| private final void logf(String fmt, Object... args) { |
| Log.v(TAG, (mViewName != null ? (mViewName + ": ") : "") + String.format(fmt, args)); |
| } |
| |
| protected PhoneStatusBar mStatusBar; |
| private float mPeekHeight; |
| private float mHintDistance; |
| private float mInitialOffsetOnTouch; |
| private float mExpandedFraction = 0; |
| private float mExpandedHeight = 0; |
| private boolean mJustPeeked; |
| private boolean mClosing; |
| private boolean mTracking; |
| private boolean mTouchSlopExceeded; |
| private int mTrackingPointer; |
| protected int mTouchSlop; |
| |
| private ValueAnimator mHeightAnimator; |
| private ObjectAnimator mPeekAnimator; |
| private VelocityTrackerInterface mVelocityTracker; |
| private FlingAnimationUtils mFlingAnimationUtils; |
| |
| PanelBar mBar; |
| |
| protected int mMaxPanelHeight = -1; |
| private String mViewName; |
| private float mInitialTouchY; |
| private float mInitialTouchX; |
| |
| private Interpolator mLinearOutSlowInInterpolator; |
| private Interpolator mBounceInterpolator; |
| |
| protected void onExpandingFinished() { |
| mBar.onExpandingFinished(); |
| } |
| |
| protected void onExpandingStarted() { |
| } |
| |
| private void runPeekAnimation() { |
| if (DEBUG) logf("peek to height=%.1f", mPeekHeight); |
| if (mHeightAnimator != null) { |
| return; |
| } |
| if (mPeekAnimator == null) { |
| mPeekAnimator = ObjectAnimator.ofFloat(this, |
| "expandedHeight", mPeekHeight) |
| .setDuration(250); |
| } |
| mPeekAnimator.start(); |
| } |
| |
| public PanelView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| mFlingAnimationUtils = new FlingAnimationUtils(context, 0.6f); |
| mLinearOutSlowInInterpolator = |
| AnimationUtils.loadInterpolator(context, android.R.interpolator.fast_out_slow_in); |
| mBounceInterpolator = new BounceInterpolator(); |
| } |
| |
| protected void loadDimens() { |
| final Resources res = getContext().getResources(); |
| mPeekHeight = res.getDimension(R.dimen.peek_height) |
| + getPaddingBottom(); // our window might have a dropshadow |
| |
| final ViewConfiguration configuration = ViewConfiguration.get(getContext()); |
| mTouchSlop = configuration.getScaledTouchSlop(); |
| mHintDistance = res.getDimension(R.dimen.hint_move_distance); |
| } |
| |
| private void trackMovement(MotionEvent event) { |
| // Add movement to velocity tracker using raw screen X and Y coordinates instead |
| // of window coordinates because the window frame may be moving at the same time. |
| float deltaX = event.getRawX() - event.getX(); |
| float deltaY = event.getRawY() - event.getY(); |
| event.offsetLocation(deltaX, deltaY); |
| if (mVelocityTracker != null) mVelocityTracker.addMovement(event); |
| event.offsetLocation(-deltaX, -deltaY); |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent event) { |
| |
| /* |
| * We capture touch events here and update the expand height here in case according to |
| * the users fingers. This also handles multi-touch. |
| * |
| * If the user just clicks shortly, we give him a quick peek of the shade. |
| * |
| * Flinging is also enabled in order to open or close the shade. |
| */ |
| |
| int pointerIndex = event.findPointerIndex(mTrackingPointer); |
| if (pointerIndex < 0) { |
| pointerIndex = 0; |
| mTrackingPointer = event.getPointerId(pointerIndex); |
| } |
| final float y = event.getY(pointerIndex); |
| final float x = event.getX(pointerIndex); |
| |
| boolean waitForTouchSlop = hasConflictingGestures(); |
| |
| switch (event.getActionMasked()) { |
| case MotionEvent.ACTION_DOWN: |
| |
| mInitialTouchY = y; |
| mInitialTouchX = x; |
| mInitialOffsetOnTouch = mExpandedHeight; |
| mTouchSlopExceeded = false; |
| if (mVelocityTracker == null) { |
| initVelocityTracker(); |
| } |
| trackMovement(event); |
| if (!waitForTouchSlop || mHeightAnimator != null) { |
| if (mHeightAnimator != null) { |
| mHeightAnimator.cancel(); // end any outstanding animations |
| } |
| onTrackingStarted(); |
| } |
| if (mExpandedHeight == 0) { |
| mJustPeeked = true; |
| runPeekAnimation(); |
| } |
| break; |
| |
| case MotionEvent.ACTION_POINTER_UP: |
| final int upPointer = event.getPointerId(event.getActionIndex()); |
| if (mTrackingPointer == upPointer) { |
| // gesture is ongoing, find a new pointer to track |
| final int newIndex = event.getPointerId(0) != upPointer ? 0 : 1; |
| final float newY = event.getY(newIndex); |
| final float newX = event.getX(newIndex); |
| mTrackingPointer = event.getPointerId(newIndex); |
| mInitialOffsetOnTouch = mExpandedHeight; |
| mInitialTouchY = newY; |
| mInitialTouchX = newX; |
| } |
| break; |
| |
| case MotionEvent.ACTION_MOVE: |
| float h = y - mInitialTouchY; |
| if (Math.abs(h) > mTouchSlop && Math.abs(h) > Math.abs(x - mInitialTouchX)) { |
| mTouchSlopExceeded = true; |
| if (waitForTouchSlop && !mTracking) { |
| mInitialOffsetOnTouch = mExpandedHeight; |
| mInitialTouchX = x; |
| mInitialTouchY = y; |
| if (mHeightAnimator != null) { |
| mHeightAnimator.cancel(); // end any outstanding animations |
| } |
| onTrackingStarted(); |
| h = 0; |
| } |
| } |
| final float newHeight = h + mInitialOffsetOnTouch; |
| if (newHeight > mPeekHeight) { |
| if (mPeekAnimator != null && mPeekAnimator.isStarted()) { |
| mPeekAnimator.cancel(); |
| } |
| mJustPeeked = false; |
| } |
| if (!mJustPeeked && (!waitForTouchSlop || mTracking)) { |
| setExpandedHeightInternal(newHeight); |
| mBar.panelExpansionChanged(PanelView.this, mExpandedFraction); |
| } |
| |
| trackMovement(event); |
| break; |
| |
| case MotionEvent.ACTION_UP: |
| case MotionEvent.ACTION_CANCEL: |
| mTrackingPointer = -1; |
| trackMovement(event); |
| if (mTracking && mTouchSlopExceeded) { |
| float vel = getCurrentVelocity(); |
| boolean expand = flingExpands(vel); |
| onTrackingStopped(expand); |
| fling(vel, expand); |
| } else { |
| boolean expands = onEmptySpaceClick(); |
| onTrackingStopped(expands); |
| } |
| if (mVelocityTracker != null) { |
| mVelocityTracker.recycle(); |
| mVelocityTracker = null; |
| } |
| break; |
| } |
| return !waitForTouchSlop || mTracking; |
| } |
| |
| protected abstract boolean hasConflictingGestures(); |
| |
| protected void onTrackingStopped(boolean expand) { |
| mTracking = false; |
| mBar.onTrackingStopped(PanelView.this, expand); |
| } |
| |
| protected void onTrackingStarted() { |
| mTracking = true; |
| mBar.onTrackingStarted(PanelView.this); |
| onExpandingStarted(); |
| } |
| |
| private float getCurrentVelocity() { |
| |
| // the velocitytracker might be null if we got a bad input stream |
| if (mVelocityTracker == null) { |
| return 0; |
| } |
| mVelocityTracker.computeCurrentVelocity(1000); |
| return mVelocityTracker.getYVelocity(); |
| } |
| |
| @Override |
| public boolean onInterceptTouchEvent(MotionEvent event) { |
| |
| /* |
| * If the user drags anywhere inside the panel we intercept it if he moves his finger |
| * upwards. This allows closing the shade from anywhere inside the panel. |
| * |
| * We only do this if the current content is scrolled to the bottom, |
| * i.e isScrolledToBottom() is true and therefore there is no conflicting scrolling gesture |
| * possible. |
| */ |
| int pointerIndex = event.findPointerIndex(mTrackingPointer); |
| if (pointerIndex < 0) { |
| pointerIndex = 0; |
| mTrackingPointer = event.getPointerId(pointerIndex); |
| } |
| final float x = event.getX(pointerIndex); |
| final float y = event.getY(pointerIndex); |
| boolean scrolledToBottom = isScrolledToBottom(); |
| |
| switch (event.getActionMasked()) { |
| case MotionEvent.ACTION_DOWN: |
| if (mHeightAnimator != null) { |
| mHeightAnimator.cancel(); // end any outstanding animations |
| return true; |
| } |
| mInitialTouchY = y; |
| mInitialTouchX = x; |
| mTouchSlopExceeded = false; |
| initVelocityTracker(); |
| trackMovement(event); |
| break; |
| case MotionEvent.ACTION_POINTER_UP: |
| final int upPointer = event.getPointerId(event.getActionIndex()); |
| if (mTrackingPointer == upPointer) { |
| // gesture is ongoing, find a new pointer to track |
| final int newIndex = event.getPointerId(0) != upPointer ? 0 : 1; |
| mTrackingPointer = event.getPointerId(newIndex); |
| mInitialTouchX = event.getX(newIndex); |
| mInitialTouchY = event.getY(newIndex); |
| } |
| break; |
| |
| case MotionEvent.ACTION_MOVE: |
| final float h = y - mInitialTouchY; |
| trackMovement(event); |
| if (scrolledToBottom) { |
| if (h < -mTouchSlop && h < -Math.abs(x - mInitialTouchX)) { |
| mInitialOffsetOnTouch = mExpandedHeight; |
| mInitialTouchY = y; |
| mInitialTouchX = x; |
| mTracking = true; |
| mTouchSlopExceeded = true; |
| onTrackingStarted(); |
| return true; |
| } |
| } |
| break; |
| } |
| return false; |
| } |
| |
| private void initVelocityTracker() { |
| if (mVelocityTracker != null) { |
| mVelocityTracker.recycle(); |
| } |
| mVelocityTracker = VelocityTrackerFactory.obtain(getContext()); |
| } |
| |
| protected boolean isScrolledToBottom() { |
| return true; |
| } |
| |
| protected float getContentHeight() { |
| return mExpandedHeight; |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| super.onFinishInflate(); |
| loadDimens(); |
| } |
| |
| @Override |
| protected void onConfigurationChanged(Configuration newConfig) { |
| super.onConfigurationChanged(newConfig); |
| loadDimens(); |
| mMaxPanelHeight = -1; |
| } |
| |
| /** |
| * @param vel the current velocity of the motion |
| * @return whether a fling should expands the panel; contracts otherwise |
| */ |
| private boolean flingExpands(float vel) { |
| if (Math.abs(vel) < mFlingAnimationUtils.getMinVelocityPxPerSecond()) { |
| return getExpandedFraction() > 0.5f; |
| } else { |
| return vel > 0; |
| } |
| } |
| |
| protected void fling(float vel, boolean expand) { |
| cancelPeek(); |
| float target = expand ? getMaxPanelHeight() : 0.0f; |
| if (target == mExpandedHeight) { |
| onExpandingFinished(); |
| mBar.panelExpansionChanged(this, mExpandedFraction); |
| return; |
| } |
| ValueAnimator animator = createHeightAnimator(target); |
| if (expand) { |
| mFlingAnimationUtils.apply(animator, mExpandedHeight, target, vel, getHeight()); |
| } else { |
| mFlingAnimationUtils.applyDismissing(animator, mExpandedHeight, target, vel, |
| getHeight()); |
| |
| // Make it shorter if we run a canned animation |
| if (vel == 0) { |
| animator.setDuration((long) (animator.getDuration() / 1.75f)); |
| } |
| } |
| animator.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| mHeightAnimator = null; |
| onExpandingFinished(); |
| } |
| }); |
| animator.start(); |
| mHeightAnimator = animator; |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| super.onAttachedToWindow(); |
| mViewName = getResources().getResourceName(getId()); |
| } |
| |
| public String getName() { |
| return mViewName; |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| super.onMeasure(widthMeasureSpec, heightMeasureSpec); |
| |
| if (DEBUG) logf("onMeasure(%d, %d) -> (%d, %d)", |
| widthMeasureSpec, heightMeasureSpec, getMeasuredWidth(), getMeasuredHeight()); |
| |
| // Did one of our children change size? |
| int newHeight = getMeasuredHeight(); |
| if (newHeight > mMaxPanelHeight) { |
| // we only adapt the max height if it's bigger |
| mMaxPanelHeight = newHeight; |
| // If the user isn't actively poking us, let's rubberband to the content |
| if (!mTracking && mHeightAnimator == null |
| && mExpandedHeight > 0 && mExpandedHeight != mMaxPanelHeight |
| && mMaxPanelHeight > 0) { |
| mExpandedHeight = mMaxPanelHeight; |
| } |
| } |
| } |
| |
| public void setExpandedHeight(float height) { |
| if (DEBUG) logf("setExpandedHeight(%.1f)", height); |
| setExpandedHeightInternal(height); |
| mBar.panelExpansionChanged(PanelView.this, mExpandedFraction); |
| } |
| |
| @Override |
| protected void onLayout (boolean changed, int left, int top, int right, int bottom) { |
| if (DEBUG) logf("onLayout: changed=%s, bottom=%d eh=%d fh=%d", changed?"T":"f", bottom, |
| (int)mExpandedHeight, mMaxPanelHeight); |
| super.onLayout(changed, left, top, right, bottom); |
| requestPanelHeightUpdate(); |
| } |
| |
| protected void requestPanelHeightUpdate() { |
| float currentMaxPanelHeight = getMaxPanelHeight(); |
| |
| // If the user isn't actively poking us, let's update the height |
| if (!mTracking && mHeightAnimator == null |
| && mExpandedHeight > 0 && currentMaxPanelHeight != mExpandedHeight) { |
| setExpandedHeightInternal(currentMaxPanelHeight); |
| } |
| } |
| |
| public void setExpandedHeightInternal(float h) { |
| float fh = getMaxPanelHeight(); |
| mExpandedHeight = Math.max(0, Math.min(fh, h)); |
| float overExpansion = h - fh; |
| overExpansion = Math.max(0, overExpansion); |
| if (overExpansion != mOverExpansion) { |
| onOverExpansionChanged(overExpansion); |
| } |
| |
| if (DEBUG) { |
| logf("setExpansion: height=%.1f fh=%.1f tracking=%s", h, fh, mTracking ? "T" : "f"); |
| } |
| |
| onHeightUpdated(mExpandedHeight); |
| mExpandedFraction = Math.min(1f, (fh == 0) ? 0 : mExpandedHeight / fh); |
| } |
| |
| protected void onOverExpansionChanged(float overExpansion) { |
| mOverExpansion = overExpansion; |
| } |
| |
| protected abstract void onHeightUpdated(float expandedHeight); |
| |
| /** |
| * This returns the maximum height of the panel. Children should override this if their |
| * desired height is not the full height. |
| * |
| * @return the default implementation simply returns the maximum height. |
| */ |
| protected int getMaxPanelHeight() { |
| mMaxPanelHeight = Math.max(mMaxPanelHeight, getHeight()); |
| return mMaxPanelHeight; |
| } |
| |
| public void setExpandedFraction(float frac) { |
| setExpandedHeight(getMaxPanelHeight() * frac); |
| } |
| |
| public float getExpandedHeight() { |
| return mExpandedHeight; |
| } |
| |
| public float getExpandedFraction() { |
| return mExpandedFraction; |
| } |
| |
| public boolean isFullyExpanded() { |
| return mExpandedHeight >= getMaxPanelHeight(); |
| } |
| |
| public boolean isFullyCollapsed() { |
| return mExpandedHeight <= 0; |
| } |
| |
| public boolean isCollapsing() { |
| return mClosing; |
| } |
| |
| public boolean isTracking() { |
| return mTracking; |
| } |
| |
| public void setBar(PanelBar panelBar) { |
| mBar = panelBar; |
| } |
| |
| public void collapse() { |
| // TODO: abort animation or ongoing touch |
| if (DEBUG) logf("collapse: " + this); |
| if (!isFullyCollapsed()) { |
| if (mHeightAnimator != null) { |
| mHeightAnimator.cancel(); |
| } |
| mClosing = true; |
| onExpandingStarted(); |
| fling(0, false /* expand */); |
| } |
| } |
| |
| public void expand() { |
| if (DEBUG) logf("expand: " + this); |
| if (isFullyCollapsed()) { |
| mBar.startOpeningPanel(this); |
| onExpandingStarted(); |
| fling(0, true /* expand */); |
| } else if (DEBUG) { |
| if (DEBUG) logf("skipping expansion: is expanded"); |
| } |
| } |
| |
| public void cancelPeek() { |
| if (mPeekAnimator != null && mPeekAnimator.isStarted()) { |
| mPeekAnimator.cancel(); |
| } |
| } |
| |
| protected void startUnlockHintAnimation() { |
| |
| // We don't need to hint the user if an animation is already running or the user is changing |
| // the expansion. |
| if (mHeightAnimator != null || mTracking) { |
| return; |
| } |
| cancelPeek(); |
| onExpandingStarted(); |
| startUnlockHintAnimationPhase1(); |
| mStatusBar.onUnlockHintStarted(); |
| } |
| |
| /** |
| * Phase 1: Move everything upwards. |
| */ |
| private void startUnlockHintAnimationPhase1() { |
| float target = Math.max(0, getMaxPanelHeight() - mHintDistance); |
| ValueAnimator animator = createHeightAnimator(target); |
| animator.setDuration(250); |
| animator.setInterpolator(mLinearOutSlowInInterpolator); |
| animator.addListener(new AnimatorListenerAdapter() { |
| private boolean mCancelled; |
| |
| @Override |
| public void onAnimationCancel(Animator animation) { |
| mCancelled = true; |
| } |
| |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| if (mCancelled) { |
| mHeightAnimator = null; |
| onExpandingFinished(); |
| mStatusBar.onUnlockHintFinished(); |
| } else { |
| startUnlockHintAnimationPhase2(); |
| } |
| } |
| }); |
| animator.start(); |
| mHeightAnimator = animator; |
| } |
| |
| /** |
| * Phase 2: Bounce down. |
| */ |
| private void startUnlockHintAnimationPhase2() { |
| ValueAnimator animator = createHeightAnimator(getMaxPanelHeight()); |
| animator.setDuration(450); |
| animator.setInterpolator(mBounceInterpolator); |
| animator.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| mHeightAnimator = null; |
| onExpandingFinished(); |
| mStatusBar.onUnlockHintFinished(); |
| } |
| }); |
| animator.start(); |
| mHeightAnimator = animator; |
| } |
| |
| private ValueAnimator createHeightAnimator(float targetHeight) { |
| ValueAnimator animator = ValueAnimator.ofFloat(mExpandedHeight, targetHeight); |
| animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { |
| @Override |
| public void onAnimationUpdate(ValueAnimator animation) { |
| setExpandedHeight((Float) animation.getAnimatedValue()); |
| } |
| }); |
| return animator; |
| } |
| |
| /** |
| * Gets called when the user performs a click anywhere in the empty area of the panel. |
| * |
| * @return whether the panel will be expanded after the action performed by this method |
| */ |
| private boolean onEmptySpaceClick() { |
| switch (mStatusBar.getBarState()) { |
| case StatusBarState.KEYGUARD: |
| startUnlockHintAnimation(); |
| return true; |
| case StatusBarState.SHADE_LOCKED: |
| // TODO: Go to Keyguard again. |
| return true; |
| case StatusBarState.SHADE: |
| collapse(); |
| return false; |
| default: |
| return true; |
| } |
| } |
| |
| public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| pw.println(String.format("[PanelView(%s): expandedHeight=%f maxPanelHeight=%d closing=%s" |
| + " tracking=%s justPeeked=%s peekAnim=%s%s timeAnim=%s%s" |
| + "]", |
| this.getClass().getSimpleName(), |
| getExpandedHeight(), |
| getMaxPanelHeight(), |
| mClosing?"T":"f", |
| mTracking?"T":"f", |
| mJustPeeked?"T":"f", |
| mPeekAnimator, ((mPeekAnimator!=null && mPeekAnimator.isStarted())?" (started)":""), |
| mHeightAnimator, ((mHeightAnimator !=null && mHeightAnimator.isStarted())?" (started)":"") |
| )); |
| } |
| |
| public abstract void resetViews(); |
| } |