List of usage examples for android.support.v4.view VelocityTrackerCompat getXVelocity
public static float getXVelocity(VelocityTracker tracker, int pointerId)
From source file:android.support.v7.widget.helper.ItemTouchHelper.java
private int checkHorizontalSwipe(ViewHolder viewHolder, int flags) { if ((flags & (LEFT | RIGHT)) != 0) { final int dirFlag = mDx > 0 ? RIGHT : LEFT; if (mVelocityTracker != null && mActivePointerId > -1) { final float xVelocity = VelocityTrackerCompat.getXVelocity(mVelocityTracker, mActivePointerId); final int velDirFlag = xVelocity > 0f ? RIGHT : LEFT; if ((velDirFlag & flags) != 0 && dirFlag == velDirFlag && Math.abs(xVelocity) >= mRecyclerView.getMinFlingVelocity()) { return velDirFlag; }/* www. ja v a 2 s. c om*/ } final float threshold = mRecyclerView.getWidth() * mCallback.getSwipeThreshold(viewHolder); if ((flags & dirFlag) != 0 && Math.abs(mDx) > threshold) { return dirFlag; } } return 0; }
From source file:com.anarchy.classify.library.helper.ClassifyItemTouchHelper.java
private int checkHorizontalSwipe(RecyclerView.ViewHolder viewHolder, int flags) { if ((flags & (LEFT | RIGHT)) != 0) { final int dirFlag = mDx > 0 ? RIGHT : LEFT; if (mVelocityTracker != null && mActivePointerId > -1) { final float xVelocity = VelocityTrackerCompat.getXVelocity(mVelocityTracker, mActivePointerId); final int velDirFlag = xVelocity > 0f ? RIGHT : LEFT; if ((velDirFlag & flags) != 0 && dirFlag == velDirFlag && Math.abs(xVelocity) >= mRecyclerView.getMinFlingVelocity()) { return velDirFlag; }//from ww w . jav a 2 s.c om } final float threshold = mRecyclerView.getWidth() * mCallback.getSwipeThreshold(viewHolder); if ((flags & dirFlag) != 0 && Math.abs(mDx) > threshold) { return dirFlag; } } return 0; }
From source file:carbon.recycler.ItemTouchHelper.java
private int checkHorizontalSwipe(ViewHolder viewHolder, int flags) { if ((flags & (LEFT | RIGHT)) != 0) { final int dirFlag = mDx > 0 ? RIGHT : LEFT; if (mVelocityTracker != null && mActivePointerId > -1) { mVelocityTracker.computeCurrentVelocity(PIXELS_PER_SECOND, mCallback.getSwipeVelocityThreshold(mMaxSwipeVelocity)); final float xVelocity = VelocityTrackerCompat.getXVelocity(mVelocityTracker, mActivePointerId); final float yVelocity = VelocityTrackerCompat.getYVelocity(mVelocityTracker, mActivePointerId); final int velDirFlag = xVelocity > 0f ? RIGHT : LEFT; final float absXVelocity = Math.abs(xVelocity); if ((velDirFlag & flags) != 0 && dirFlag == velDirFlag && absXVelocity >= mCallback.getSwipeEscapeVelocity(mSwipeEscapeVelocity) && absXVelocity > Math.abs(yVelocity)) { return velDirFlag; }// ww w . j a v a 2 s . c o m } final float threshold = mRecyclerView.getWidth() * mCallback.getSwipeThreshold(viewHolder); if ((flags & dirFlag) != 0 && Math.abs(mDx) > threshold) { return dirFlag; } } return 0; }
From source file:com.oguzbabaoglu.cardpager.CardPager.java
@Override public boolean onTouchEvent(@NonNull MotionEvent ev) { if (ev.getAction() == MotionEvent.ACTION_DOWN && ev.getEdgeFlags() != 0) { // Don't handle edge touches immediately -- they may actually belong to one of our descendants. return false; }/*from w w w . j a va 2s. co m*/ if (pagerAdapter == null || pagerAdapter.getCount() == 0) { // Nothing to present or scroll; nothing to touch. return false; } if (velocityTracker == null) { velocityTracker = VelocityTracker.obtain(); } velocityTracker.addMovement(ev); final int action = ev.getAction(); switch (action & MotionEventCompat.ACTION_MASK) { case MotionEvent.ACTION_DOWN: // Do not interfere with the settling action. if (scrollState != SCROLL_STATE_SETTLING) { scroller.abortAnimation(); populatePending = false; populate(); } // Remember where the motion event started lastMotionX = initialMotionX = ev.getX(); lastMotionY = initialMotionY = ev.getY(); activePointerId = MotionEventCompat.getPointerId(ev, 0); break; case MotionEvent.ACTION_MOVE: if (!dragInProgress) { final int pointerIndex = MotionEventCompat.findPointerIndex(ev, activePointerId); final float x = MotionEventCompat.getX(ev, pointerIndex); final float xDiff = Math.abs(x - lastMotionX); final float y = MotionEventCompat.getY(ev, pointerIndex); final float yDiff = Math.abs(y - lastMotionY); if (xDiff > touchSlop && xDiff > yDiff) { dragInProgress = true; lastMotionX = x - initialMotionX > 0 ? initialMotionX + touchSlop : initialMotionX - touchSlop; lastMotionY = y; setScrollState(SCROLL_STATE_DRAGGING); // Disallow Parent Intercept, just in case requestParentDisallowInterceptTouchEvent(true); } } // Not else! Note that dragInProgress can be set above. if (dragInProgress) { // Scroll to follow the motion event final int activePointerIndex = MotionEventCompat.findPointerIndex(ev, activePointerId); final float x = MotionEventCompat.getX(ev, activePointerIndex); performDrag(x); } break; case MotionEvent.ACTION_UP: if (!dragInProgress) { break; } final VelocityTracker velocityTracker = this.velocityTracker; velocityTracker.computeCurrentVelocity(1000, maximumVelocity); final int initialVelocity = (int) VelocityTrackerCompat.getXVelocity(velocityTracker, activePointerId); populatePending = true; final int width = getClientWidth(); final int scrollX = getScrollX(); final ItemInfo ii = infoForCurrentScrollPosition(); final int currentPage = ii.position; final float pageOffset = ((float) scrollX / width) - ii.offset; final int activePointerIndex = MotionEventCompat.findPointerIndex(ev, activePointerId); final float x = MotionEventCompat.getX(ev, activePointerIndex); final int totalDelta = (int) (x - initialMotionX); final int nextPage = determineTargetPage(currentPage, pageOffset, initialVelocity, totalDelta); setCurrentItemInternal(nextPage, true, true, initialVelocity); activePointerId = INVALID_POINTER; endDrag(); break; case MotionEvent.ACTION_CANCEL: if (!dragInProgress) { break; } scrollToItem(currentItem, true, 0); activePointerId = INVALID_POINTER; endDrag(); break; case MotionEventCompat.ACTION_POINTER_DOWN: final int index = MotionEventCompat.getActionIndex(ev); lastMotionX = MotionEventCompat.getX(ev, index); activePointerId = MotionEventCompat.getPointerId(ev, index); break; case MotionEventCompat.ACTION_POINTER_UP: onSecondaryPointerUp(ev); lastMotionX = MotionEventCompat.getX(ev, MotionEventCompat.findPointerIndex(ev, activePointerId)); break; } return true; }
From source file:carbon.recycler.ItemTouchHelper.java
private int checkVerticalSwipe(ViewHolder viewHolder, int flags) { if ((flags & (UP | DOWN)) != 0) { final int dirFlag = mDy > 0 ? DOWN : UP; if (mVelocityTracker != null && mActivePointerId > -1) { mVelocityTracker.computeCurrentVelocity(PIXELS_PER_SECOND, mCallback.getSwipeVelocityThreshold(mMaxSwipeVelocity)); final float xVelocity = VelocityTrackerCompat.getXVelocity(mVelocityTracker, mActivePointerId); final float yVelocity = VelocityTrackerCompat.getYVelocity(mVelocityTracker, mActivePointerId); final int velDirFlag = yVelocity > 0f ? DOWN : UP; final float absYVelocity = Math.abs(yVelocity); if ((velDirFlag & flags) != 0 && velDirFlag == dirFlag && absYVelocity >= mCallback.getSwipeEscapeVelocity(mSwipeEscapeVelocity) && absYVelocity > Math.abs(xVelocity)) { return velDirFlag; }/*from w w w .ja va 2s .c o m*/ } final float threshold = mRecyclerView.getHeight() * mCallback.getSwipeThreshold(viewHolder); if ((flags & dirFlag) != 0 && Math.abs(mDy) > threshold) { return dirFlag; } } return 0; }
From source file:com.android.launcher3.ItemTouchHelper.java
private int checkHorizontalSwipe(android.support.v7.widget.RecyclerView.ViewHolder viewHolder, int flags) { if ((flags & (LEFT | RIGHT)) != 0) { final int dirFlag = mDx > 0 ? RIGHT : LEFT; if (mVelocityTracker != null && mActivePointerId > -1) { mVelocityTracker.computeCurrentVelocity(PIXELS_PER_SECOND, mCallback.getSwipeVelocityThreshold(mMaxSwipeVelocity)); final float xVelocity = VelocityTrackerCompat.getXVelocity(mVelocityTracker, mActivePointerId); final float yVelocity = VelocityTrackerCompat.getYVelocity(mVelocityTracker, mActivePointerId); final int velDirFlag = xVelocity > 0f ? RIGHT : LEFT; final float absXVelocity = Math.abs(xVelocity); if ((velDirFlag & flags) != 0 && dirFlag == velDirFlag && absXVelocity >= mCallback.getSwipeEscapeVelocity(mSwipeEscapeVelocity) && absXVelocity > Math.abs(yVelocity)) { return velDirFlag; }/*from w w w . j a v a 2 s. c o m*/ } final float threshold = mRecyclerView.getWidth() * mCallback.getSwipeThreshold(viewHolder); if ((flags & dirFlag) != 0 && Math.abs(mDx) > threshold) { return dirFlag; } } return 0; }
From source file:com.datarita.ultimatecamera.turu.views.TwoWayView.java
@Override public boolean onTouchEvent(MotionEvent ev) { if (!isEnabled()) { // A disabled view that is clickable still consumes the touch // events, it just doesn't respond to them. return isClickable() || isLongClickable(); }/*ww w. ja v a 2 s . c o m*/ if (!mIsAttached) { return false; } boolean needsInvalidate = false; initVelocityTrackerIfNotExists(); mVelocityTracker.addMovement(ev); final int action = ev.getAction() & MotionEventCompat.ACTION_MASK; switch (action) { case MotionEvent.ACTION_DOWN: { if (mDataChanged) { break; } mVelocityTracker.clear(); mScroller.abortAnimation(); final float x = ev.getX(); final float y = ev.getY(); mLastTouchPos = (mIsVertical ? y : x); int motionPosition = pointToPosition((int) x, (int) y); mActivePointerId = MotionEventCompat.getPointerId(ev, 0); mTouchRemainderPos = 0; if (mDataChanged) { break; } if (mTouchMode == TOUCH_MODE_FLINGING) { mTouchMode = TOUCH_MODE_DRAGGING; reportScrollStateChange(OnScrollListener.SCROLL_STATE_TOUCH_SCROLL); motionPosition = findMotionRowOrColumn((int) mLastTouchPos); return true; } else if (mMotionPosition >= 0 && mAdapter.isEnabled(mMotionPosition)) { mTouchMode = TOUCH_MODE_DOWN; triggerCheckForTap(); } mMotionPosition = motionPosition; break; } case MotionEvent.ACTION_MOVE: { final int index = MotionEventCompat.findPointerIndex(ev, mActivePointerId); if (index < 0) { Log.e(LOGTAG, "onInterceptTouchEvent could not find pointer with id " + mActivePointerId + " - did TwoWayView receive an inconsistent " + "event stream?"); return false; } final float pos; if (mIsVertical) { pos = MotionEventCompat.getY(ev, index); } else { pos = MotionEventCompat.getX(ev, index); } if (mDataChanged) { // Re-sync everything if data has been changed // since the scroll operation can query the mAdapter. layoutChildren(); } final float diff = pos - mLastTouchPos + mTouchRemainderPos; final int delta = (int) diff; mTouchRemainderPos = diff - delta; switch (mTouchMode) { case TOUCH_MODE_DOWN: case TOUCH_MODE_TAP: case TOUCH_MODE_DONE_WAITING: // Check if we have moved far enough that it looks more like a // scroll than a tap maybeStartScrolling(delta); break; case TOUCH_MODE_DRAGGING: case TOUCH_MODE_OVERSCROLL: mLastTouchPos = pos; maybeScroll(delta); break; } break; } case MotionEvent.ACTION_CANCEL: cancelCheckForTap(); mTouchMode = TOUCH_MODE_REST; reportScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE); setPressed(false); View motionView = this.getChildAt(mMotionPosition - mFirstPosition); if (motionView != null) { motionView.setPressed(false); } if (mStartEdge != null && mEndEdge != null) { needsInvalidate = mStartEdge.onRelease() | mEndEdge.onRelease(); } recycleVelocityTracker(); break; case MotionEvent.ACTION_UP: { switch (mTouchMode) { case TOUCH_MODE_DOWN: case TOUCH_MODE_TAP: case TOUCH_MODE_DONE_WAITING: { final int motionPosition = mMotionPosition; final View child = getChildAt(motionPosition - mFirstPosition); final float x = ev.getX(); final float y = ev.getY(); boolean inList = false; if (mIsVertical) { inList = x > getPaddingLeft() && x < getWidth() - getPaddingRight(); } else { inList = y > getPaddingTop() && y < getHeight() - getPaddingBottom(); } if (child != null && !child.hasFocusable() && inList) { if (mTouchMode != TOUCH_MODE_DOWN) { child.setPressed(false); } if (mPerformClick == null) { mPerformClick = new PerformClick(); } final PerformClick performClick = mPerformClick; performClick.mClickMotionPosition = motionPosition; performClick.rememberWindowAttachCount(); mResurrectToPosition = motionPosition; if (mTouchMode == TOUCH_MODE_DOWN || mTouchMode == TOUCH_MODE_TAP) { if (mTouchMode == TOUCH_MODE_DOWN) { cancelCheckForTap(); } else { cancelCheckForLongPress(); } mLayoutMode = LAYOUT_NORMAL; if (!mDataChanged && mAdapter.isEnabled(motionPosition)) { mTouchMode = TOUCH_MODE_TAP; setPressed(true); positionSelector(mMotionPosition, child); child.setPressed(true); if (mSelector != null) { Drawable d = mSelector.getCurrent(); if (d != null && d instanceof TransitionDrawable) { ((TransitionDrawable) d).resetTransition(); } } if (mTouchModeReset != null) { removeCallbacks(mTouchModeReset); } mTouchModeReset = new Runnable() { @Override public void run() { mTouchMode = TOUCH_MODE_REST; setPressed(false); child.setPressed(false); if (!mDataChanged) { performClick.run(); } mTouchModeReset = null; } }; postDelayed(mTouchModeReset, ViewConfiguration.getPressedStateDuration()); } else { mTouchMode = TOUCH_MODE_REST; updateSelectorState(); } } else if (!mDataChanged && mAdapter.isEnabled(motionPosition)) { performClick.run(); } } mTouchMode = TOUCH_MODE_REST; updateSelectorState(); break; } case TOUCH_MODE_DRAGGING: if (contentFits()) { mTouchMode = TOUCH_MODE_REST; reportScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE); break; } mVelocityTracker.computeCurrentVelocity(1000, mMaximumVelocity); final float velocity; if (mIsVertical) { velocity = VelocityTrackerCompat.getYVelocity(mVelocityTracker, mActivePointerId); } else { velocity = VelocityTrackerCompat.getXVelocity(mVelocityTracker, mActivePointerId); } if (Math.abs(velocity) >= mFlingVelocity) { mTouchMode = TOUCH_MODE_FLINGING; reportScrollStateChange(OnScrollListener.SCROLL_STATE_FLING); mScroller.fling(0, 0, (int) (mIsVertical ? 0 : velocity), (int) (mIsVertical ? velocity : 0), (mIsVertical ? 0 : Integer.MIN_VALUE), (mIsVertical ? 0 : Integer.MAX_VALUE), (mIsVertical ? Integer.MIN_VALUE : 0), (mIsVertical ? Integer.MAX_VALUE : 0)); mLastTouchPos = 0; needsInvalidate = true; } else { mTouchMode = TOUCH_MODE_REST; reportScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE); } break; case TOUCH_MODE_OVERSCROLL: mTouchMode = TOUCH_MODE_REST; reportScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE); break; } cancelCheckForTap(); cancelCheckForLongPress(); setPressed(false); if (mStartEdge != null && mEndEdge != null) { needsInvalidate |= mStartEdge.onRelease() | mEndEdge.onRelease(); } recycleVelocityTracker(); break; } } if (needsInvalidate) { ViewCompat.postInvalidateOnAnimation(this); } return true; }
From source file:com.jihf.swipbackhelper.ViewDragHelper.java
private void releaseViewForPointerUp() { mVelocityTracker.computeCurrentVelocity(1000, mMaxVelocity); final float xvel = clampMag(VelocityTrackerCompat.getXVelocity(mVelocityTracker, mActivePointerId), mMinVelocity, mMaxVelocity); final float yvel = clampMag(VelocityTrackerCompat.getYVelocity(mVelocityTracker, mActivePointerId), mMinVelocity, mMaxVelocity); if (getViewDragState() == STATE_DRAGGING) { dispatchViewReleased(xvel, yvel); }// w w w . j a v a 2s . c om }
From source file:com.appsummary.luoxf.mylibrary.swipbackhelper.ViewDragHelper.java
private void releaseViewForPointerUp() { mVelocityTracker.computeCurrentVelocity(1000, mMaxVelocity); final float xvel = clampMag(VelocityTrackerCompat.getXVelocity(mVelocityTracker, mActivePointerId), mMinVelocity, mMaxVelocity); final float yvel = clampMag(VelocityTrackerCompat.getYVelocity(mVelocityTracker, mActivePointerId), mMinVelocity, mMaxVelocity); if (getViewDragState() == STATE_DRAGGING) dispatchViewReleased(xvel, yvel); }
From source file:com.android.launcher3.ItemTouchHelper.java
private int checkVerticalSwipe(android.support.v7.widget.RecyclerView.ViewHolder viewHolder, int flags) { if ((flags & (UP | DOWN)) != 0) { final int dirFlag = mDy > 0 ? DOWN : UP; if (mVelocityTracker != null && mActivePointerId > -1) { mVelocityTracker.computeCurrentVelocity(PIXELS_PER_SECOND, mCallback.getSwipeVelocityThreshold(mMaxSwipeVelocity)); final float xVelocity = VelocityTrackerCompat.getXVelocity(mVelocityTracker, mActivePointerId); final float yVelocity = VelocityTrackerCompat.getYVelocity(mVelocityTracker, mActivePointerId); final int velDirFlag = yVelocity > 0f ? DOWN : UP; final float absYVelocity = Math.abs(yVelocity); if ((velDirFlag & flags) != 0 && velDirFlag == dirFlag && absYVelocity >= mCallback.getSwipeEscapeVelocity(mSwipeEscapeVelocity) && absYVelocity > Math.abs(xVelocity)) { return velDirFlag; }/*from w ww. j a v a 2s. co m*/ } final float threshold = mRecyclerView.getHeight() * mCallback.getSwipeThreshold(viewHolder); if ((flags & dirFlag) != 0 && Math.abs(mDy) > threshold) { return dirFlag; } } return 0; }