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Diffstat (limited to 'src/com/android/launcher3/notification/SwipeHelper.java')
| -rw-r--r-- | src/com/android/launcher3/notification/SwipeHelper.java | 687 |
1 files changed, 0 insertions, 687 deletions
diff --git a/src/com/android/launcher3/notification/SwipeHelper.java b/src/com/android/launcher3/notification/SwipeHelper.java deleted file mode 100644 index ebbe5fc6a..000000000 --- a/src/com/android/launcher3/notification/SwipeHelper.java +++ /dev/null @@ -1,687 +0,0 @@ -/* - * Copyright (C) 2017 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.launcher3.notification; - -import android.animation.Animator; -import android.animation.AnimatorListenerAdapter; -import android.animation.ObjectAnimator; -import android.animation.ValueAnimator; -import android.animation.ValueAnimator.AnimatorUpdateListener; -import android.content.Context; -import android.graphics.RectF; -import android.os.Handler; -import android.util.ArrayMap; -import android.util.Log; -import android.view.MotionEvent; -import android.view.VelocityTracker; -import android.view.View; -import android.view.ViewConfiguration; -import android.view.accessibility.AccessibilityEvent; -import com.android.launcher3.R; - -/** - * This class was copied from com.android.systemui. - */ -public class SwipeHelper { - private static final String TAG = "SwipeHelper"; - private static final boolean DEBUG_INVALIDATE = false; - private static final boolean SLOW_ANIMATIONS = false; // DEBUG; - private static final boolean CONSTRAIN_SWIPE = true; - private static final boolean FADE_OUT_DURING_SWIPE = true; - private static final boolean DISMISS_IF_SWIPED_FAR_ENOUGH = true; - - public static final int X = 0; - public static final int Y = 1; - - private static final float SWIPE_ESCAPE_VELOCITY = 100f; // dp/sec - private static final int DEFAULT_ESCAPE_ANIMATION_DURATION = 200; // ms - private static final int MAX_ESCAPE_ANIMATION_DURATION = 400; // ms - private static final int MAX_DISMISS_VELOCITY = 4000; // dp/sec - private static final int SNAP_ANIM_LEN = SLOW_ANIMATIONS ? 1000 : 150; // ms - - static final float SWIPE_PROGRESS_FADE_END = 0.5f; // fraction of thumbnail width - // beyond which swipe progress->0 - private float mMinSwipeProgress = 0f; - private float mMaxSwipeProgress = 1f; - - private final FlingAnimationUtils mFlingAnimationUtils; - private float mPagingTouchSlop; - private final Callback mCallback; - private final Handler mHandler; - private final int mSwipeDirection; - private final VelocityTracker mVelocityTracker; - - private float mInitialTouchPos; - private float mPerpendicularInitialTouchPos; - private boolean mDragging; - private boolean mSnappingChild; - private View mCurrView; - private boolean mCanCurrViewBeDimissed; - private float mDensityScale; - private float mTranslation = 0; - - private boolean mLongPressSent; - private LongPressListener mLongPressListener; - private Runnable mWatchLongPress; - private final long mLongPressTimeout; - - final private int[] mTmpPos = new int[2]; - private final int mFalsingThreshold; - private boolean mTouchAboveFalsingThreshold; - private boolean mDisableHwLayers; - - private final ArrayMap<View, Animator> mDismissPendingMap = new ArrayMap<>(); - - public SwipeHelper(int swipeDirection, Callback callback, Context context) { - mCallback = callback; - mHandler = new Handler(); - mSwipeDirection = swipeDirection; - mVelocityTracker = VelocityTracker.obtain(); - mDensityScale = context.getResources().getDisplayMetrics().density; - mPagingTouchSlop = ViewConfiguration.get(context).getScaledPagingTouchSlop(); - - mLongPressTimeout = (long) (ViewConfiguration.getLongPressTimeout() * 1.5f); // extra long-press! - mFalsingThreshold = context.getResources().getDimensionPixelSize( - R.dimen.swipe_helper_falsing_threshold); - mFlingAnimationUtils = new FlingAnimationUtils(context, getMaxEscapeAnimDuration() / 1000f); - } - - public void setLongPressListener(LongPressListener listener) { - mLongPressListener = listener; - } - - public void setDensityScale(float densityScale) { - mDensityScale = densityScale; - } - - public void setPagingTouchSlop(float pagingTouchSlop) { - mPagingTouchSlop = pagingTouchSlop; - } - - public void setDisableHardwareLayers(boolean disableHwLayers) { - mDisableHwLayers = disableHwLayers; - } - - private float getPos(MotionEvent ev) { - return mSwipeDirection == X ? ev.getX() : ev.getY(); - } - - private float getPerpendicularPos(MotionEvent ev) { - return mSwipeDirection == X ? ev.getY() : ev.getX(); - } - - protected float getTranslation(View v) { - return mSwipeDirection == X ? v.getTranslationX() : v.getTranslationY(); - } - - private float getVelocity(VelocityTracker vt) { - return mSwipeDirection == X ? vt.getXVelocity() : - vt.getYVelocity(); - } - - protected ObjectAnimator createTranslationAnimation(View v, float newPos) { - ObjectAnimator anim = ObjectAnimator.ofFloat(v, - mSwipeDirection == X ? View.TRANSLATION_X : View.TRANSLATION_Y, newPos); - return anim; - } - - private float getPerpendicularVelocity(VelocityTracker vt) { - return mSwipeDirection == X ? vt.getYVelocity() : - vt.getXVelocity(); - } - - protected Animator getViewTranslationAnimator(View v, float target, - AnimatorUpdateListener listener) { - ObjectAnimator anim = createTranslationAnimation(v, target); - if (listener != null) { - anim.addUpdateListener(listener); - } - return anim; - } - - protected void setTranslation(View v, float translate) { - if (v == null) { - return; - } - if (mSwipeDirection == X) { - v.setTranslationX(translate); - } else { - v.setTranslationY(translate); - } - } - - protected float getSize(View v) { - return mSwipeDirection == X ? v.getMeasuredWidth() : - v.getMeasuredHeight(); - } - - public void setMinSwipeProgress(float minSwipeProgress) { - mMinSwipeProgress = minSwipeProgress; - } - - public void setMaxSwipeProgress(float maxSwipeProgress) { - mMaxSwipeProgress = maxSwipeProgress; - } - - private float getSwipeProgressForOffset(View view, float translation) { - float viewSize = getSize(view); - float result = Math.abs(translation / viewSize); - return Math.min(Math.max(mMinSwipeProgress, result), mMaxSwipeProgress); - } - - private float getSwipeAlpha(float progress) { - return Math.min(0, Math.max(1, progress / SWIPE_PROGRESS_FADE_END)); - } - - private void updateSwipeProgressFromOffset(View animView, boolean dismissable) { - updateSwipeProgressFromOffset(animView, dismissable, getTranslation(animView)); - } - - private void updateSwipeProgressFromOffset(View animView, boolean dismissable, - float translation) { - float swipeProgress = getSwipeProgressForOffset(animView, translation); - if (!mCallback.updateSwipeProgress(animView, dismissable, swipeProgress)) { - if (FADE_OUT_DURING_SWIPE && dismissable) { - float alpha = swipeProgress; - if (!mDisableHwLayers) { - if (alpha != 0f && alpha != 1f) { - animView.setLayerType(View.LAYER_TYPE_HARDWARE, null); - } else { - animView.setLayerType(View.LAYER_TYPE_NONE, null); - } - } - animView.setAlpha(getSwipeAlpha(swipeProgress)); - } - } - invalidateGlobalRegion(animView); - } - - // invalidate the view's own bounds all the way up the view hierarchy - public static void invalidateGlobalRegion(View view) { - invalidateGlobalRegion( - view, - new RectF(view.getLeft(), view.getTop(), view.getRight(), view.getBottom())); - } - - // invalidate a rectangle relative to the view's coordinate system all the way up the view - // hierarchy - public static void invalidateGlobalRegion(View view, RectF childBounds) { - //childBounds.offset(view.getTranslationX(), view.getTranslationY()); - if (DEBUG_INVALIDATE) - Log.v(TAG, "-------------"); - while (view.getParent() != null && view.getParent() instanceof View) { - view = (View) view.getParent(); - view.getMatrix().mapRect(childBounds); - view.invalidate((int) Math.floor(childBounds.left), - (int) Math.floor(childBounds.top), - (int) Math.ceil(childBounds.right), - (int) Math.ceil(childBounds.bottom)); - if (DEBUG_INVALIDATE) { - Log.v(TAG, "INVALIDATE(" + (int) Math.floor(childBounds.left) - + "," + (int) Math.floor(childBounds.top) - + "," + (int) Math.ceil(childBounds.right) - + "," + (int) Math.ceil(childBounds.bottom)); - } - } - } - - public void removeLongPressCallback() { - if (mWatchLongPress != null) { - mHandler.removeCallbacks(mWatchLongPress); - mWatchLongPress = null; - } - } - - public boolean onInterceptTouchEvent(final MotionEvent ev) { - final int action = ev.getAction(); - - switch (action) { - case MotionEvent.ACTION_DOWN: - mTouchAboveFalsingThreshold = false; - mDragging = false; - mSnappingChild = false; - mLongPressSent = false; - mVelocityTracker.clear(); - mCurrView = mCallback.getChildAtPosition(ev); - - if (mCurrView != null) { - onDownUpdate(mCurrView); - mCanCurrViewBeDimissed = mCallback.canChildBeDismissed(mCurrView); - mVelocityTracker.addMovement(ev); - mInitialTouchPos = getPos(ev); - mPerpendicularInitialTouchPos = getPerpendicularPos(ev); - mTranslation = getTranslation(mCurrView); - if (mLongPressListener != null) { - if (mWatchLongPress == null) { - mWatchLongPress = new Runnable() { - @Override - public void run() { - if (mCurrView != null && !mLongPressSent) { - mLongPressSent = true; - mCurrView.sendAccessibilityEvent( - AccessibilityEvent.TYPE_VIEW_LONG_CLICKED); - mCurrView.getLocationOnScreen(mTmpPos); - final int x = (int) ev.getRawX() - mTmpPos[0]; - final int y = (int) ev.getRawY() - mTmpPos[1]; - mLongPressListener.onLongPress(mCurrView, x, y); - } - } - }; - } - mHandler.postDelayed(mWatchLongPress, mLongPressTimeout); - } - } - break; - - case MotionEvent.ACTION_MOVE: - if (mCurrView != null && !mLongPressSent) { - mVelocityTracker.addMovement(ev); - float pos = getPos(ev); - float perpendicularPos = getPerpendicularPos(ev); - float delta = pos - mInitialTouchPos; - float deltaPerpendicular = perpendicularPos - mPerpendicularInitialTouchPos; - if (Math.abs(delta) > mPagingTouchSlop - && Math.abs(delta) > Math.abs(deltaPerpendicular)) { - mCallback.onBeginDrag(mCurrView); - mDragging = true; - mInitialTouchPos = getPos(ev); - mTranslation = getTranslation(mCurrView); - removeLongPressCallback(); - } - } - break; - - case MotionEvent.ACTION_UP: - case MotionEvent.ACTION_CANCEL: - final boolean captured = (mDragging || mLongPressSent); - mDragging = false; - mCurrView = null; - mLongPressSent = false; - removeLongPressCallback(); - if (captured) return true; - break; - } - return mDragging || mLongPressSent; - } - - /** - * @param view The view to be dismissed - * @param velocity The desired pixels/second speed at which the view should move - * @param useAccelerateInterpolator Should an accelerating Interpolator be used - */ - public void dismissChild(final View view, float velocity, boolean useAccelerateInterpolator) { - dismissChild(view, velocity, null /* endAction */, 0 /* delay */, - useAccelerateInterpolator, 0 /* fixedDuration */, false /* isDismissAll */); - } - - /** - * @param animView The view to be dismissed - * @param velocity The desired pixels/second speed at which the view should move - * @param endAction The action to perform at the end - * @param delay The delay after which we should start - * @param useAccelerateInterpolator Should an accelerating Interpolator be used - * @param fixedDuration If not 0, this exact duration will be taken - */ - public void dismissChild(final View animView, float velocity, final Runnable endAction, - long delay, boolean useAccelerateInterpolator, long fixedDuration, - boolean isDismissAll) { - final boolean canBeDismissed = mCallback.canChildBeDismissed(animView); - float newPos; - boolean isLayoutRtl = animView.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL; - - // if we use the Menu to dismiss an item in landscape, animate up - boolean animateUpForMenu = velocity == 0 && (getTranslation(animView) == 0 || isDismissAll) - && mSwipeDirection == Y; - // if the language is rtl we prefer swiping to the left - boolean animateLeftForRtl = velocity == 0 && (getTranslation(animView) == 0 || isDismissAll) - && isLayoutRtl; - boolean animateLeft = velocity < 0 - || (velocity == 0 && getTranslation(animView) < 0 && !isDismissAll); - - if (animateLeft || animateLeftForRtl || animateUpForMenu) { - newPos = -getSize(animView); - } else { - newPos = getSize(animView); - } - long duration; - if (fixedDuration == 0) { - duration = MAX_ESCAPE_ANIMATION_DURATION; - if (velocity != 0) { - duration = Math.min(duration, - (int) (Math.abs(newPos - getTranslation(animView)) * 1000f / Math - .abs(velocity)) - ); - } else { - duration = DEFAULT_ESCAPE_ANIMATION_DURATION; - } - } else { - duration = fixedDuration; - } - - if (!mDisableHwLayers) { - animView.setLayerType(View.LAYER_TYPE_HARDWARE, null); - } - AnimatorUpdateListener updateListener = new AnimatorUpdateListener() { - public void onAnimationUpdate(ValueAnimator animation) { - onTranslationUpdate(animView, (float) animation.getAnimatedValue(), canBeDismissed); - } - }; - - Animator anim = getViewTranslationAnimator(animView, newPos, updateListener); - if (anim == null) { - return; - } - if (useAccelerateInterpolator) { - anim.setInterpolator(Interpolators.FAST_OUT_LINEAR_IN); - anim.setDuration(duration); - } else { - mFlingAnimationUtils.applyDismissing(anim, getTranslation(animView), - newPos, velocity, getSize(animView)); - } - if (delay > 0) { - anim.setStartDelay(delay); - } - anim.addListener(new AnimatorListenerAdapter() { - private boolean mCancelled; - - public void onAnimationCancel(Animator animation) { - mCancelled = true; - } - - public void onAnimationEnd(Animator animation) { - updateSwipeProgressFromOffset(animView, canBeDismissed); - mDismissPendingMap.remove(animView); - if (!mCancelled) { - mCallback.onChildDismissed(animView); - } - if (endAction != null) { - endAction.run(); - } - if (!mDisableHwLayers) { - animView.setLayerType(View.LAYER_TYPE_NONE, null); - } - } - }); - - prepareDismissAnimation(animView, anim); - mDismissPendingMap.put(animView, anim); - anim.start(); - } - - /** - * Called to update the dismiss animation. - */ - protected void prepareDismissAnimation(View view, Animator anim) { - // Do nothing - } - - public void snapChild(final View animView, final float targetLeft, float velocity) { - final boolean canBeDismissed = mCallback.canChildBeDismissed(animView); - AnimatorUpdateListener updateListener = new AnimatorUpdateListener() { - public void onAnimationUpdate(ValueAnimator animation) { - onTranslationUpdate(animView, (float) animation.getAnimatedValue(), canBeDismissed); - } - }; - - Animator anim = getViewTranslationAnimator(animView, targetLeft, updateListener); - if (anim == null) { - return; - } - int duration = SNAP_ANIM_LEN; - anim.setDuration(duration); - anim.addListener(new AnimatorListenerAdapter() { - public void onAnimationEnd(Animator animator) { - mSnappingChild = false; - updateSwipeProgressFromOffset(animView, canBeDismissed); - mCallback.onChildSnappedBack(animView, targetLeft); - } - }); - prepareSnapBackAnimation(animView, anim); - mSnappingChild = true; - anim.start(); - } - - /** - * Called to update the snap back animation. - */ - protected void prepareSnapBackAnimation(View view, Animator anim) { - // Do nothing - } - - /** - * Called when there's a down event. - */ - public void onDownUpdate(View currView) { - // Do nothing - } - - /** - * Called on a move event. - */ - protected void onMoveUpdate(View view, float totalTranslation, float delta) { - // Do nothing - } - - /** - * Called in {@link AnimatorUpdateListener#onAnimationUpdate(ValueAnimator)} when the current - * view is being animated to dismiss or snap. - */ - public void onTranslationUpdate(View animView, float value, boolean canBeDismissed) { - updateSwipeProgressFromOffset(animView, canBeDismissed, value); - } - - private void snapChildInstantly(final View view) { - final boolean canAnimViewBeDismissed = mCallback.canChildBeDismissed(view); - setTranslation(view, 0); - updateSwipeProgressFromOffset(view, canAnimViewBeDismissed); - } - - /** - * Called when a view is updated to be non-dismissable, if the view was being dismissed before - * the update this will handle snapping it back into place. - * - * @param view the view to snap if necessary. - * @param animate whether to animate the snap or not. - * @param targetLeft the target to snap to. - */ - public void snapChildIfNeeded(final View view, boolean animate, float targetLeft) { - if ((mDragging && mCurrView == view) || mSnappingChild) { - return; - } - boolean needToSnap = false; - Animator dismissPendingAnim = mDismissPendingMap.get(view); - if (dismissPendingAnim != null) { - needToSnap = true; - dismissPendingAnim.cancel(); - } else if (getTranslation(view) != 0) { - needToSnap = true; - } - if (needToSnap) { - if (animate) { - snapChild(view, targetLeft, 0.0f /* velocity */); - } else { - snapChildInstantly(view); - } - } - } - - public boolean onTouchEvent(MotionEvent ev) { - if (mLongPressSent) { - return true; - } - - if (!mDragging) { - if (mCallback.getChildAtPosition(ev) != null) { - - // We are dragging directly over a card, make sure that we also catch the gesture - // even if nobody else wants the touch event. - onInterceptTouchEvent(ev); - return true; - } else { - - // We are not doing anything, make sure the long press callback - // is not still ticking like a bomb waiting to go off. - removeLongPressCallback(); - return false; - } - } - - mVelocityTracker.addMovement(ev); - final int action = ev.getAction(); - switch (action) { - case MotionEvent.ACTION_OUTSIDE: - case MotionEvent.ACTION_MOVE: - if (mCurrView != null) { - float delta = getPos(ev) - mInitialTouchPos; - float absDelta = Math.abs(delta); - if (absDelta >= getFalsingThreshold()) { - mTouchAboveFalsingThreshold = true; - } - // don't let items that can't be dismissed be dragged more than - // maxScrollDistance - if (CONSTRAIN_SWIPE && !mCallback.canChildBeDismissed(mCurrView)) { - float size = getSize(mCurrView); - float maxScrollDistance = 0.25f * size; - if (absDelta >= size) { - delta = delta > 0 ? maxScrollDistance : -maxScrollDistance; - } else { - delta = maxScrollDistance * (float) Math.sin((delta/size)*(Math.PI/2)); - } - } - - setTranslation(mCurrView, mTranslation + delta); - updateSwipeProgressFromOffset(mCurrView, mCanCurrViewBeDimissed); - onMoveUpdate(mCurrView, mTranslation + delta, delta); - } - break; - case MotionEvent.ACTION_UP: - case MotionEvent.ACTION_CANCEL: - if (mCurrView == null) { - break; - } - mVelocityTracker.computeCurrentVelocity(1000 /* px/sec */, getMaxVelocity()); - float velocity = getVelocity(mVelocityTracker); - - if (!handleUpEvent(ev, mCurrView, velocity, getTranslation(mCurrView))) { - if (isDismissGesture(ev)) { - // flingadingy - dismissChild(mCurrView, velocity, - !swipedFastEnough() /* useAccelerateInterpolator */); - } else { - // snappity - mCallback.onDragCancelled(mCurrView); - snapChild(mCurrView, 0 /* leftTarget */, velocity); - } - mCurrView = null; - } - mDragging = false; - break; - } - return true; - } - - private int getFalsingThreshold() { - float factor = mCallback.getFalsingThresholdFactor(); - return (int) (mFalsingThreshold * factor); - } - - private float getMaxVelocity() { - return MAX_DISMISS_VELOCITY * mDensityScale; - } - - protected float getEscapeVelocity() { - return getUnscaledEscapeVelocity() * mDensityScale; - } - - protected float getUnscaledEscapeVelocity() { - return SWIPE_ESCAPE_VELOCITY; - } - - protected long getMaxEscapeAnimDuration() { - return MAX_ESCAPE_ANIMATION_DURATION; - } - - protected boolean swipedFarEnough() { - float translation = getTranslation(mCurrView); - return DISMISS_IF_SWIPED_FAR_ENOUGH && Math.abs(translation) > 0.4 * getSize(mCurrView); - } - - protected boolean isDismissGesture(MotionEvent ev) { - boolean falsingDetected = mCallback.isAntiFalsingNeeded() && !mTouchAboveFalsingThreshold; - return !falsingDetected && (swipedFastEnough() || swipedFarEnough()) - && ev.getActionMasked() == MotionEvent.ACTION_UP - && mCallback.canChildBeDismissed(mCurrView); - } - - protected boolean swipedFastEnough() { - float velocity = getVelocity(mVelocityTracker); - float translation = getTranslation(mCurrView); - boolean ret = (Math.abs(velocity) > getEscapeVelocity()) - && (velocity > 0) == (translation > 0); - return ret; - } - - protected boolean handleUpEvent(MotionEvent ev, View animView, float velocity, - float translation) { - return false; - } - - public interface Callback { - View getChildAtPosition(MotionEvent ev); - - boolean canChildBeDismissed(View v); - - boolean isAntiFalsingNeeded(); - - void onBeginDrag(View v); - - void onChildDismissed(View v); - - void onDragCancelled(View v); - - /** - * Called when the child is snapped to a position. - * - * @param animView the view that was snapped. - * @param targetLeft the left position the view was snapped to. - */ - void onChildSnappedBack(View animView, float targetLeft); - - /** - * Updates the swipe progress on a child. - * - * @return if true, prevents the default alpha fading. - */ - boolean updateSwipeProgress(View animView, boolean dismissable, float swipeProgress); - - /** - * @return The factor the falsing threshold should be multiplied with - */ - float getFalsingThresholdFactor(); - } - - /** - * Equivalent to View.OnLongClickListener with coordinates - */ - public interface LongPressListener { - /** - * Equivalent to {@link View.OnLongClickListener#onLongClick(View)} with coordinates - * @return whether the longpress was handled - */ - boolean onLongPress(View v, int x, int y); - } -}
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