Examples with MotionEvent android.view.MotionEvent used on opensource projects

Example 51 with MotionEvent

use of android.view.MotionEvent in project material-components-android by material-components.

the class CoordinatorLayout method resetTouchBehaviors.

/**
   * Reset all Behavior-related tracking records either to clean up or in preparation for a new
   * event stream. This should be called when attached or detached from a window, in response to an
   * UP or CANCEL event, when intercept is request-disallowed and similar cases where an event
   * stream in progress will be aborted.
   */
private void resetTouchBehaviors() {
    if (mBehaviorTouchView != null) {
        final Behavior b = ((LayoutParams) mBehaviorTouchView.getLayoutParams()).getBehavior();
        if (b != null) {
            final long now = SystemClock.uptimeMillis();
            final MotionEvent cancelEvent = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0.0f, 0.0f, 0);
            b.onTouchEvent(this, mBehaviorTouchView, cancelEvent);
            cancelEvent.recycle();
        }
        mBehaviorTouchView = null;
    }
    final int childCount = getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = getChildAt(i);
        final LayoutParams lp = (LayoutParams) child.getLayoutParams();
        lp.resetTouchBehaviorTracking();
    }
    mDisallowInterceptReset = false;
}

Example 52 with MotionEvent

use of android.view.MotionEvent in project material-components-android by material-components.

the class CoordinatorLayout method onInterceptTouchEvent.

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    MotionEvent cancelEvent = null;
    final int action = MotionEventCompat.getActionMasked(ev);
    // Make sure we reset in case we had missed a previous important event.
    if (action == MotionEvent.ACTION_DOWN) {
        resetTouchBehaviors();
    }
    final boolean intercepted = performIntercept(ev, TYPE_ON_INTERCEPT);
    if (cancelEvent != null) {
        cancelEvent.recycle();
    }
    if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL) {
        resetTouchBehaviors();
    }
    return intercepted;
}

Example 53 with MotionEvent

use of android.view.MotionEvent in project NotificationPeekPort by lzanita09.

the class SwipeDismissListViewTouchListener method onTouch.

@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
    if (mViewWidth < 2) {
        mViewWidth = mListView.getWidth();
    }
    switch(motionEvent.getActionMasked()) {
        case MotionEvent.ACTION_DOWN:
            {
                if (mPaused) {
                    return false;
                }
                // TODO: ensure this is a finger, and set a flag
                // Find the child view that was touched (perform a hit test)
                Rect rect = new Rect();
                int childCount = mListView.getChildCount();
                int[] listViewCoords = new int[2];
                mListView.getLocationOnScreen(listViewCoords);
                int x = (int) motionEvent.getRawX() - listViewCoords[0];
                int y = (int) motionEvent.getRawY() - listViewCoords[1];
                View child;
                for (int i = 0; i < childCount; i++) {
                    child = mListView.getChildAt(i);
                    child.getHitRect(rect);
                    if (rect.contains(x, y)) {
                        mDownView = child;
                        break;
                    }
                }
                if (mDownView != null) {
                    mDownX = motionEvent.getRawX();
                    mDownY = motionEvent.getRawY();
                    mDownPosition = mListView.getPositionForView(mDownView);
                    if (mCallbacks.canDismiss(mDownPosition)) {
                        mVelocityTracker = VelocityTracker.obtain();
                        mVelocityTracker.addMovement(motionEvent);
                    } else {
                        mDownView = null;
                    }
                }
                return false;
            }
        case MotionEvent.ACTION_CANCEL:
            {
                if (mVelocityTracker == null) {
                    break;
                }
                if (mDownView != null && mSwiping) {
                    // cancel
                    mDownView.animate().translationX(0).alpha(1).setDuration(mAnimationTime).setListener(null);
                }
                mVelocityTracker.recycle();
                mVelocityTracker = null;
                mDownX = 0;
                mDownY = 0;
                mDownView = null;
                mDownPosition = ListView.INVALID_POSITION;
                mSwiping = false;
                break;
            }
        case MotionEvent.ACTION_UP:
            {
                if (mVelocityTracker == null) {
                    break;
                }
                float deltaX = motionEvent.getRawX() - mDownX;
                mVelocityTracker.addMovement(motionEvent);
                mVelocityTracker.computeCurrentVelocity(1000);
                float velocityX = mVelocityTracker.getXVelocity();
                float absVelocityX = Math.abs(velocityX);
                float absVelocityY = Math.abs(mVelocityTracker.getYVelocity());
                boolean dismiss = false;
                boolean dismissRight = false;
                if (Math.abs(deltaX) > mViewWidth / 2 && mSwiping) {
                    dismiss = true;
                    dismissRight = deltaX > 0;
                } else if (mMinFlingVelocity <= absVelocityX && absVelocityX <= mMaxFlingVelocity && absVelocityY < absVelocityX && mSwiping) {
                    // dismiss only if flinging in the same direction as dragging
                    dismiss = (velocityX < 0) == (deltaX < 0);
                    dismissRight = mVelocityTracker.getXVelocity() > 0;
                }
                if (dismiss && mDownPosition != ListView.INVALID_POSITION) {
                    // dismiss
                    // mDownView gets null'd before animation ends
                    final View downView = mDownView;
                    final int downPosition = mDownPosition;
                    ++mDismissAnimationRefCount;
                    mDownView.animate().translationX(dismissRight ? mViewWidth : -mViewWidth).alpha(0).setDuration(mAnimationTime).setListener(new AnimatorListenerAdapter() {

                        @Override
                        public void onAnimationEnd(Animator animation) {
                            performDismiss(downView, downPosition);
                        }
                    });
                } else {
                    // cancel
                    mDownView.animate().translationX(0).alpha(1).setDuration(mAnimationTime).setListener(null);
                }
                mVelocityTracker.recycle();
                mVelocityTracker = null;
                mDownX = 0;
                mDownY = 0;
                mDownView = null;
                mDownPosition = ListView.INVALID_POSITION;
                mSwiping = false;
                break;
            }
        case MotionEvent.ACTION_MOVE:
            {
                if (mVelocityTracker == null || mPaused) {
                    break;
                }
                mVelocityTracker.addMovement(motionEvent);
                float deltaX = motionEvent.getRawX() - mDownX;
                float deltaY = motionEvent.getRawY() - mDownY;
                if (Math.abs(deltaX) > mSlop && Math.abs(deltaY) < Math.abs(deltaX) / 2) {
                    mSwiping = true;
                    mSwipingSlop = (deltaX > 0 ? mSlop : -mSlop);
                    mListView.requestDisallowInterceptTouchEvent(true);
                    // Cancel ListView's touch (un-highlighting the item)
                    MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
                    cancelEvent.setAction(MotionEvent.ACTION_CANCEL | (motionEvent.getActionIndex() << MotionEvent.ACTION_POINTER_INDEX_SHIFT));
                    mListView.onTouchEvent(cancelEvent);
                    cancelEvent.recycle();
                }
                if (mSwiping) {
                    mDownView.setTranslationX(deltaX - mSwipingSlop);
                    mDownView.setAlpha(Math.max(0f, Math.min(1f, 1f - 2f * Math.abs(deltaX) / mViewWidth)));
                    return true;
                }
                break;
            }
    }
    return false;
}

Example 54 with MotionEvent

use of android.view.MotionEvent in project NotificationPeekPort by lzanita09.

the class SwipeDismissListViewTouchListener method performDismiss.

private void performDismiss(final View dismissView, final int dismissPosition) {
    // Animate the dismissed list item to zero-height and fire the dismiss callback when
    // all dismissed list item animations have completed. This triggers layout on each animation
    // frame; in the future we may want to do something smarter and more performant.
    final ViewGroup.LayoutParams lp = dismissView.getLayoutParams();
    final int originalHeight = dismissView.getHeight();
    ValueAnimator animator = ValueAnimator.ofInt(originalHeight, 1).setDuration(mAnimationTime);
    animator.addListener(new AnimatorListenerAdapter() {

        @Override
        public void onAnimationEnd(Animator animation) {
            --mDismissAnimationRefCount;
            if (mDismissAnimationRefCount == 0) {
                // No active animations, process all pending dismisses.
                // Sort by descending position
                Collections.sort(mPendingDismisses);
                int[] dismissPositions = new int[mPendingDismisses.size()];
                for (int i = mPendingDismisses.size() - 1; i >= 0; i--) {
                    dismissPositions[i] = mPendingDismisses.get(i).position;
                }
                mCallbacks.onDismiss(mListView, dismissPositions);
                // Reset mDownPosition to avoid MotionEvent.ACTION_UP trying to start a dismiss 
                // animation with a stale position
                mDownPosition = ListView.INVALID_POSITION;
                ViewGroup.LayoutParams lp;
                for (PendingDismissData pendingDismiss : mPendingDismisses) {
                    // Reset view presentation
                    pendingDismiss.view.setAlpha(1f);
                    pendingDismiss.view.setTranslationX(0);
                    lp = pendingDismiss.view.getLayoutParams();
                    lp.height = originalHeight;
                    pendingDismiss.view.setLayoutParams(lp);
                }
                // Send a cancel event
                long time = SystemClock.uptimeMillis();
                MotionEvent cancelEvent = MotionEvent.obtain(time, time, MotionEvent.ACTION_CANCEL, 0, 0, 0);
                mListView.dispatchTouchEvent(cancelEvent);
                mPendingDismisses.clear();
            }
        }
    });
    animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {

        @Override
        public void onAnimationUpdate(ValueAnimator valueAnimator) {
            lp.height = (Integer) valueAnimator.getAnimatedValue();
            dismissView.setLayoutParams(lp);
        }
    });
    mPendingDismisses.add(new PendingDismissData(dismissPosition, dismissView));
    animator.start();
}

Example 55 with MotionEvent

use of android.view.MotionEvent in project NotificationPeekPort by lzanita09.

the class UnlockGesture method createTouchListener.

public static View.OnTouchListener createTouchListener(Context context, UnlockGestureCallback callback) {
    final GestureDetector detector = new GestureDetector(context, new UnlockGestureDoubleTapListener(callback));
    View.OnTouchListener listener = new View.OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            return detector.onTouchEvent(event);
        }
    };
    return listener;
}