Example usage for android.support.v4.view MotionEventCompat ACTION_MASK

List of usage examples for android.support.v4.view MotionEventCompat ACTION_MASK

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In this page you can find the example usage for android.support.v4.view MotionEventCompat ACTION_MASK.

Prototype

int ACTION_MASK

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Document

Synonym for MotionEvent#ACTION_MASK .

Usage

From source file:com.viettel.image.zoom.ZoomViewPaper.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    /*/*from w  ww  .  j ava 2s  .  c o m*/
     * 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.
     */
    if (parent.isZooming)
        return false;

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;

    // Always take care of the touch gesture being complete.
    if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
        // Release the drag.
        if (DEBUG)
            VTLog.v(TAG, "Intercept done!");
        mIsBeingDragged = false;
        mIsUnableToDrag = false;
        mActivePointerId = INVALID_POINTER;
        return false;
    }

    // Nothing more to do here if we have decided whether or not we
    // are dragging.
    if (action != MotionEvent.ACTION_DOWN) {
        if (mIsBeingDragged) {
            if (DEBUG)
                VTLog.v(TAG, "Intercept returning true!");
            return true;
        }
        if (mIsUnableToDrag) {
            if (DEBUG)
                VTLog.v(TAG, "Intercept returning false!");
            return false;
        }
    }

    switch (action) {
    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 = MotionEventCompat.findPointerIndex(ev, activePointerId);
        final float x = MotionEventCompat.getX(ev, pointerIndex);
        final float dx = x - mLastMotionX;
        final float xDiff = Math.abs(dx);
        final float y = MotionEventCompat.getY(ev, pointerIndex);
        final float yDiff = Math.abs(y - mLastMotionY);
        if (DEBUG)
            VTLog.v(TAG, "Moved x to " + x + "," + y + " diff=" + xDiff + "," + yDiff);

        if (xDiff > mTouchSlop && xDiff > yDiff) {
            if (DEBUG)
                VTLog.v(TAG, "Starting drag!");
            mIsBeingDragged = true;
            setScrollState(SCROLL_STATE_DRAGGING);
            mLastMotionX = x;
            setScrollingCacheEnabled(true);
        } else {
            if (yDiff > mTouchSlop) {
                // The finger has moved enough in the vertical
                // direction to be counted as a drag... abort
                // any attempt to drag horizontally, to work correctly
                // with children that have scrolling containers.
                if (DEBUG)
                    VTLog.v(TAG, "Starting unable to drag!");
                mIsUnableToDrag = true;
            }
        }
        break;
    }

    case MotionEvent.ACTION_DOWN: {
        /*
         * Remember location of down touch. ACTION_DOWN always refers to
         * pointer index 0.
         */
        mLastMotionX = mInitialMotionX = ev.getX();
        mLastMotionY = ev.getY();
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);

        if (mScrollState == SCROLL_STATE_SETTLING) {
            // Let the user 'catch' the pager as it animates.
            mIsBeingDragged = true;
            mIsUnableToDrag = false;
            setScrollState(SCROLL_STATE_DRAGGING);
        } else {
            completeScroll();
            mIsBeingDragged = false;
            mIsUnableToDrag = false;
        }

        if (DEBUG)
            VTLog.v(TAG, "Down at " + mLastMotionX + "," + mLastMotionY + " mIsBeingDragged=" + mIsBeingDragged
                    + "mIsUnableToDrag=" + mIsUnableToDrag);
        break;
    }

    case MotionEventCompat.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;
}

From source file:com.dishes.views.stageredggridview.StaggeredGridView.java

@Override
public boolean onTouchEvent(MotionEvent ev) {
    if (mFastScroller != null) {
        boolean intercepted = mFastScroller.onTouchEvent(ev);
        if (intercepted) {
            return true;
        }//from   w  w w .  j  a v a 2 s .  c  om
    }
    mVelocityTracker.addMovement(ev);
    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;

    int motionPosition = pointToPosition((int) ev.getX(), (int) ev.getY());

    switch (action) {
    case MotionEvent.ACTION_DOWN:

        mVelocityTracker.clear();
        mScroller.abortAnimation();
        mLastTouchY = ev.getY();
        mLastTouchX = ev.getX();
        motionPosition = pointToPosition((int) mLastTouchX, (int) mLastTouchY);
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mTouchRemainderY = 0;

        if (mTouchMode != TOUCH_MODE_FLINGING && !mDataChanged && motionPosition >= 0
                && getAdapter().isEnabled(motionPosition)) {
            mTouchMode = TOUCH_MODE_DOWN;

            mBeginClick = true;

            if (mPendingCheckForTap == null) {
                mPendingCheckForTap = new CheckForTap();
            }

            postDelayed(mPendingCheckForTap, ViewConfiguration.getTapTimeout());
        }

        mMotionPosition = motionPosition;
        invalidate();
        break;

    case MotionEvent.ACTION_MOVE: {

        final int index = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
        if (index < 0) {
            Log.e(TAG, "onInterceptTouchEvent could not find pointer with id " + mActivePointerId
                    + " - did StaggeredGridView receive an inconsistent " + "event stream?");
            return false;
        }
        final float y = MotionEventCompat.getY(ev, index);
        final float dy = y - mLastTouchY + mTouchRemainderY;
        final int deltaY = (int) dy;
        mTouchRemainderY = dy - deltaY;

        if (Math.abs(dy) > mTouchSlop) {
            mTouchMode = TOUCH_MODE_DRAGGING;
        }

        if (mTouchMode == TOUCH_MODE_DRAGGING) {
            mLastTouchY = y;

            if (!trackMotionScroll(deltaY, true)) {
                // Break fling velocity if we impacted an edge.
                mVelocityTracker.clear();
            }
        }

        updateSelectorState();
    }
        break;

    case MotionEvent.ACTION_CANCEL:
        mTouchMode = TOUCH_MODE_IDLE;
        updateSelectorState();
        setPressed(false);
        View motionView = this.getChildAt(mMotionPosition - mFirstPosition);
        if (motionView != null) {
            motionView.setPressed(false);
        }
        final Handler handler = getHandler();
        if (handler != null) {
            handler.removeCallbacks(mPendingCheckForLongPress);
        }

        if (mTopEdge != null) {
            mTopEdge.onRelease();
            mBottomEdge.onRelease();
        }

        mTouchMode = TOUCH_MODE_IDLE;
        break;

    case MotionEvent.ACTION_UP: {
        mVelocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
        final float velocity = VelocityTrackerCompat.getYVelocity(mVelocityTracker, mActivePointerId);
        final int prevTouchMode = mTouchMode;

        if (Math.abs(velocity) > mFlingVelocity) { // TODO
            mTouchMode = TOUCH_MODE_FLINGING;
            mScroller.fling(0, 0, 0, (int) velocity, 0, 0, Integer.MIN_VALUE, Integer.MAX_VALUE);
            mLastTouchY = 0;
            invalidate();
        } else {
            mTouchMode = TOUCH_MODE_IDLE;
        }

        if (!mDataChanged && mAdapter.isEnabled(motionPosition)) {
            // TODO : handle
            mTouchMode = TOUCH_MODE_TAP;
        } else {
            mTouchMode = TOUCH_MODE_REST;
        }

        switch (prevTouchMode) {
        case TOUCH_MODE_DOWN:
        case TOUCH_MODE_TAP:
        case TOUCH_MODE_DONE_WAITING:
            final View child = getChildAt(motionPosition - mFirstPosition);
            final float x = ev.getX();
            final boolean inList = x > getPaddingLeft() && x < getWidth() - getPaddingRight();
            if (child != null && !child.hasFocusable() && inList) {
                if (mTouchMode != TOUCH_MODE_DOWN) {
                    child.setPressed(false);
                }

                if (mPerformClick == null) {
                    invalidate();
                    mPerformClick = new PerformClick();
                }

                final PerformClick performClick = mPerformClick;
                performClick.mClickMotionPosition = motionPosition;
                performClick.rememberWindowAttachCount();

                if (mTouchMode == TOUCH_MODE_DOWN || mTouchMode == TOUCH_MODE_TAP) {
                    final Handler handlerTouch = getHandler();
                    if (handlerTouch != null) {
                        handlerTouch.removeCallbacks(mTouchMode == TOUCH_MODE_DOWN ? mPendingCheckForTap
                                : mPendingCheckForLongPress);
                    }
                    mLayoutMode = LAYOUT_NORMAL;

                    if (!mDataChanged && mAdapter.isEnabled(motionPosition)) {
                        mTouchMode = TOUCH_MODE_TAP;

                        layoutChildren(mDataChanged);
                        child.setPressed(true);
                        positionSelector(mMotionPosition, 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;
                                child.setPressed(false);
                                setPressed(false);
                                if (!mDataChanged) {
                                    performClick.run();
                                }
                            }
                        };
                        postDelayed(mTouchModeReset, ViewConfiguration.getPressedStateDuration());

                    } else {
                        mTouchMode = TOUCH_MODE_REST;
                    }
                    return true;
                } else if (!mDataChanged && mAdapter.isEnabled(motionPosition)) {
                    performClick.run();
                }
            }

            mTouchMode = TOUCH_MODE_REST;
        }

        mBeginClick = false;

        updateSelectorState();
    }
        break;
    }
    return true;
}

From source file:com.aigo.kt03airdemo.ui.view.ResideLayout.java

@Override
public boolean onTouchEvent(@NonNull MotionEvent ev) {
    if (!mCanSlide) {
        return super.onTouchEvent(ev);
    }//from   w w w .  j a  va  2 s .co m

    mDragHelper.processTouchEvent(ev);

    final int action = ev.getAction();

    switch (action & MotionEventCompat.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        mInitialMotionX = x;
        mInitialMotionY = y;
        break;
    }

    case MotionEvent.ACTION_UP: {
        if (isDimmed(mSlideableView)) {
            final float x = ev.getX();
            final float y = ev.getY();
            final float dx = x - mInitialMotionX;
            final float dy = y - mInitialMotionY;
            final int slop = mDragHelper.getTouchSlop();
            if (dx * dx + dy * dy < slop * slop && mDragHelper.isViewUnder(mSlideableView, (int) x, (int) y)) {
                // Taps close a dimmed open pane.
                closePane();
                break;
            }
        }
        break;
    }
    }

    return true;
}

From source file:com.shouhuan.view.ResideLayout.java

@Override
public boolean onTouchEvent(MotionEvent ev) {
    if (!mCanSlide) {
        return super.onTouchEvent(ev);
    }/*from ww w  .ja  v  a2 s . c  o  m*/

    mDragHelper.processTouchEvent(ev);

    final int action = ev.getAction();

    switch (action & MotionEventCompat.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        mInitialMotionX = x;
        mInitialMotionY = y;
        break;
    }

    case MotionEvent.ACTION_UP: {
        if (isDimmed(mSlideableView)) {
            final float x = ev.getX();
            final float y = ev.getY();
            final float dx = x - mInitialMotionX;
            final float dy = y - mInitialMotionY;
            final int slop = mDragHelper.getTouchSlop();
            if (dx * dx + dy * dy < slop * slop && mDragHelper.isViewUnder(mSlideableView, (int) x, (int) y)) {
                // Taps close a dimmed open pane.
                closePane();
                break;
            }
        }
        break;
    }
    }

    return true;
}

From source file:com.coco.draggablegridviewpager.DraggableGridViewPager.java

@Override
public boolean onTouchEvent(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 v  a 2 s .  com*/

    if (mPageCount <= 0) {
        // Nothing to present or scroll; nothing to touch.
        return false;
    }

    if (mVelocityTracker == null) {
        mVelocityTracker = VelocityTracker.obtain();
    }
    mVelocityTracker.addMovement(ev);

    final int action = ev.getAction();
    boolean needsInvalidate = false;

    switch (action & MotionEventCompat.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN: {
        mScroller.abortAnimation();
        // Remember where the motion event started
        mLastMotionX = mInitialMotionX = ev.getX();
        mLastMotionY = mInitialMotionY = ev.getY();
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);

        DEBUG_LOG("Down at " + mLastMotionX + "," + mLastMotionY + " mIsBeingDragged=" + mIsBeingDragged
                + " mIsUnableToDrag=" + mIsUnableToDrag);

        if (!mIsBeingDragged && mScrollState == SCROLL_STATE_IDLE) {
            mLastPosition = getPositionByXY((int) mLastMotionX, (int) mLastMotionY);
        } else {
            mLastPosition = -1;
        }
        if (mLastPosition >= 0) {
            mLastDownTime = System.currentTimeMillis();
        } else {
            mLastDownTime = Long.MAX_VALUE;
        }
        DEBUG_LOG("Down at mLastPosition=" + mLastPosition);
        mLastDragged = -1;
        break;
    }
    case MotionEvent.ACTION_MOVE: {
        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
        final float x = MotionEventCompat.getX(ev, pointerIndex);
        final float y = MotionEventCompat.getY(ev, pointerIndex);

        if (mLastDragged >= 0) {
            // change draw location of dragged visual
            final View v = getChildAt(mLastDragged);
            final int l = getScrollX() + (int) x - v.getWidth() / 2;
            final int t = getScrollY() + (int) y - v.getHeight() / 2;
            v.layout(l, t, l + v.getWidth(), t + v.getHeight());

            // check for new target hover
            if (mScrollState == SCROLL_STATE_IDLE) {
                final int target = getTargetByXY((int) x, (int) y);
                if (target != -1 && mLastTarget != target) {
                    animateGap(target);
                    mLastTarget = target;
                    DEBUG_LOG("Moved to mLastTarget=" + mLastTarget);
                }
                // edge holding
                final int edge = getEdgeByXY((int) x, (int) y);
                if (mLastEdge == -1) {
                    if (edge != mLastEdge) {
                        mLastEdge = edge;
                        mLastEdgeTime = System.currentTimeMillis();
                    }
                } else {
                    if (edge != mLastEdge) {
                        mLastEdge = -1;
                    } else {
                        if ((System.currentTimeMillis() - mLastEdgeTime) >= EDGE_HOLD_DURATION) {
                            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
                            triggerSwipe(edge);
                            mLastEdge = -1;
                        }
                    }
                }
            }
        } else if (!mIsBeingDragged) {
            final float xDiff = Math.abs(x - mLastMotionX);
            final float yDiff = Math.abs(y - mLastMotionY);
            DEBUG_LOG("Moved to " + x + "," + y + " diff=" + xDiff + "," + yDiff);

            if (xDiff > mTouchSlop && xDiff > yDiff) {
                DEBUG_LOG("Starting drag!");
                mIsBeingDragged = true;
                requestParentDisallowInterceptTouchEvent(true);
                mLastMotionX = x - mInitialMotionX > 0 ? mInitialMotionX + mTouchSlop
                        : mInitialMotionX - mTouchSlop;
                mLastMotionY = y;
                setScrollState(SCROLL_STATE_DRAGGING);
                setScrollingCacheEnabled(true);
            }
        }
        // Not else! Note that mIsBeingDragged can be set above.
        if (mIsBeingDragged) {
            // Scroll to follow the motion event
            needsInvalidate |= performDrag(x);
        } else if (mLastPosition >= 0) {
            final int currentPosition = getPositionByXY((int) x, (int) y);
            DEBUG_LOG("Moved to currentPosition=" + currentPosition);
            if (currentPosition == mLastPosition) {
                if ((System.currentTimeMillis() - mLastDownTime) >= LONG_CLICK_DURATION) {
                    if (onItemLongClick(currentPosition)) {
                        performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
                        mLastDragged = mLastPosition;
                        requestParentDisallowInterceptTouchEvent(true);
                        mLastTarget = -1;
                        animateDragged();
                        mLastPosition = -1;
                    }
                    mLastDownTime = Long.MAX_VALUE;
                }
            } else {
                mLastPosition = -1;
            }
        }
        break;
    }
    case MotionEvent.ACTION_UP: {
        DEBUG_LOG("Touch up!!!");
        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
        final float x = MotionEventCompat.getX(ev, pointerIndex);
        final float y = MotionEventCompat.getY(ev, pointerIndex);

        if (mLastDragged >= 0) {
            rearrange();
        } else if (mIsBeingDragged) {
            final VelocityTracker velocityTracker = mVelocityTracker;
            velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
            int initialVelocity = (int) VelocityTrackerCompat.getXVelocity(velocityTracker, mActivePointerId);
            final int width = getWidth();
            final int scrollX = getScrollX();
            final int currentPage = scrollX / width;
            final int offsetPixels = scrollX - currentPage * width;
            final float pageOffset = (float) offsetPixels / (float) width;
            final int totalDelta = (int) (x - mInitialMotionX);
            int nextPage = determineTargetPage(currentPage, pageOffset, initialVelocity, totalDelta);
            setCurrentItemInternal(nextPage, true, true, initialVelocity);

            mActivePointerId = INVALID_POINTER;
            endDrag();
        } else if (mLastPosition >= 0) {
            final int currentPosition = getPositionByXY((int) x, (int) y);
            DEBUG_LOG("Touch up!!! currentPosition=" + currentPosition);
            if (currentPosition == mLastPosition) {
                onItemClick(currentPosition);
            }
        }
        break;
    }
    case MotionEvent.ACTION_CANCEL:
        DEBUG_LOG("Touch cancel!!!");
        if (mLastDragged >= 0) {
            rearrange();
        } else if (mIsBeingDragged) {
            scrollToItem(mCurItem, true, 0, false);
            mActivePointerId = INVALID_POINTER;
            endDrag();
        }
        break;
    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int index = MotionEventCompat.getActionIndex(ev);
        final float x = MotionEventCompat.getX(ev, index);
        mLastMotionX = x;
        mActivePointerId = MotionEventCompat.getPointerId(ev, index);
        break;
    }
    case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        mLastMotionX = MotionEventCompat.getX(ev, MotionEventCompat.findPointerIndex(ev, mActivePointerId));
        break;
    }
    if (needsInvalidate) {
        ViewCompat.postInvalidateOnAnimation(this);
    }
    return true;
}

From source file:cn.org.eshow.framwork.view.slidingmenu.CustomViewAbove.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {

    if (!mEnabled)
        return false;

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;

    if (DEBUG)// w  w  w .java  2 s .c o  m
        if (action == MotionEvent.ACTION_DOWN)
            Log.v(TAG, "Received ACTION_DOWN");

    if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP
            || (action != MotionEvent.ACTION_DOWN && mIsUnableToDrag)) {
        endDrag();
        return false;
    }

    switch (action) {
    case MotionEvent.ACTION_MOVE:
        determineDrag(ev);
        break;
    case MotionEvent.ACTION_DOWN:
        int index = MotionEventCompat.getActionIndex(ev);
        mActivePointerId = MotionEventCompat.getPointerId(ev, index);
        if (mActivePointerId == INVALID_POINTER)
            break;
        mLastMotionX = mInitialMotionX = MotionEventCompat.getX(ev, index);
        mLastMotionY = MotionEventCompat.getY(ev, index);
        if (thisTouchAllowed(ev)) {
            mIsBeingDragged = false;
            mIsUnableToDrag = false;
            if (isMenuOpen() && mViewBehind.menuTouchInQuickReturn(mContent, mCurItem, ev.getX() + mScrollX)) {
                mQuickReturn = true;
            }
        } else {
            mIsUnableToDrag = true;
        }
        break;
    case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        break;
    }

    if (!mIsBeingDragged) {
        if (mVelocityTracker == null) {
            mVelocityTracker = VelocityTracker.obtain();
        }
        mVelocityTracker.addMovement(ev);
    }
    return mIsBeingDragged || mQuickReturn;
}

From source file:com.ebaonet.lawyer.ui.weight.DraggableGridViewPager.java

@Override
public boolean onTouchEvent(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 ww.  java  2 s.  c  o m

    if (mPageCount <= 0) {
        // Nothing to present or scroll; nothing to touch.
        return false;
    }

    if (mVelocityTracker == null) {
        mVelocityTracker = VelocityTracker.obtain();
    }
    mVelocityTracker.addMovement(ev);

    final int action = ev.getAction();
    boolean needsInvalidate = false;

    switch (action & MotionEventCompat.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN: {
        mScroller.abortAnimation();
        // Remember where the motion event started
        mLastMotionX = mInitialMotionX = ev.getX();
        mLastMotionY = mInitialMotionY = ev.getY();
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);

        DEBUG_LOG("Down at " + mLastMotionX + "," + mLastMotionY + " mIsBeingDragged=" + mIsBeingDragged
                + " mIsUnableToDrag=" + mIsUnableToDrag);

        if (!mIsBeingDragged && mScrollState == SCROLL_STATE_IDLE) {
            mLastPosition = getPositionByXY((int) mLastMotionX, (int) mLastMotionY);
        } else {
            mLastPosition = -1;
        }
        if (mLastPosition >= 0) {
            mLastDownTime = System.currentTimeMillis();
        } else {
            mLastDownTime = Long.MAX_VALUE;
        }
        DEBUG_LOG("Down at mLastPosition=" + mLastPosition);
        mLastDragged = -1;
        break;
    }
    case MotionEvent.ACTION_MOVE: {
        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
        final float x = MotionEventCompat.getX(ev, pointerIndex);
        final float y = MotionEventCompat.getY(ev, pointerIndex);

        if (mLastDragged >= 0) {
            // change draw location of dragged visual
            final View v = getChildAt(mLastDragged);
            final int l = getScrollX() + (int) x - v.getWidth() / 2;
            final int t = getScrollY() + (int) y - v.getHeight() / 2;
            v.layout(l, t, l + v.getWidth(), t + v.getHeight());

            // check for new target hover
            if (mScrollState == SCROLL_STATE_IDLE) {
                final int target = getTargetByXY((int) x, (int) y);
                if (target != -1 && mLastTarget != target) {
                    animateGap(target);
                    mLastTarget = target;
                    DEBUG_LOG("Moved to mLastTarget=" + mLastTarget);
                }
                // edge holding
                final int edge = getEdgeByXY((int) x, (int) y);
                if (mLastEdge == -1) {
                    if (edge != mLastEdge) {
                        mLastEdge = edge;
                        mLastEdgeTime = System.currentTimeMillis();
                    }
                } else {
                    if (edge != mLastEdge) {
                        mLastEdge = -1;
                    } else {
                        if ((System.currentTimeMillis() - mLastEdgeTime) >= EDGE_HOLD_DURATION) {
                            performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
                            triggerSwipe(edge);
                            mLastEdge = -1;
                        }
                    }
                }
            }
        } else if (!mIsBeingDragged) {
            final float xDiff = Math.abs(x - mLastMotionX);
            final float yDiff = Math.abs(y - mLastMotionY);
            DEBUG_LOG("Moved to " + x + "," + y + " diff=" + xDiff + "," + yDiff);

            if (xDiff > mTouchSlop && xDiff > yDiff) {
                DEBUG_LOG("Starting drag!");
                mIsBeingDragged = true;
                requestParentDisallowInterceptTouchEvent(true);
                mLastMotionX = x - mInitialMotionX > 0 ? mInitialMotionX + mTouchSlop
                        : mInitialMotionX - mTouchSlop;
                mLastMotionY = y;
                setScrollState(SCROLL_STATE_DRAGGING);
                setScrollingCacheEnabled(true);
            }
        }
        // Not else! Note that mIsBeingDragged can be set above.
        if (mIsBeingDragged) {
            // Scroll to follow the motion event
            needsInvalidate |= performDrag(x);
        } else if (mLastPosition >= 0) {
            final int currentPosition = getPositionByXY((int) x, (int) y);
            DEBUG_LOG("Moved to currentPosition=" + currentPosition);
            if (currentPosition == mLastPosition) {
                if ((System.currentTimeMillis() - mLastDownTime) >= LONG_CLICK_DURATION) {
                    if (onItemLongClick(currentPosition)) {
                        performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);
                        mLastDragged = mLastPosition;
                        requestParentDisallowInterceptTouchEvent(true);
                        mLastTarget = -1;
                        animateDragged();
                        mLastPosition = -1;
                    }
                    mLastDownTime = Long.MAX_VALUE;
                }
            } else {
                mLastPosition = -1;
            }
        }
        break;
    }
    case MotionEvent.ACTION_UP: {
        DEBUG_LOG("Touch up!!!");
        final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
        final float x = MotionEventCompat.getX(ev, pointerIndex);
        final float y = MotionEventCompat.getY(ev, pointerIndex);

        if (mLastDragged >= 0) {
            rearrange();
        } else if (mIsBeingDragged) {
            final VelocityTracker velocityTracker = mVelocityTracker;
            velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
            int initialVelocity = (int) VelocityTrackerCompat.getXVelocity(velocityTracker, mActivePointerId);
            final int width = getWidth();
            final int scrollX = getScrollX();
            final int currentPage = scrollX / width;
            final int offsetPixels = scrollX - currentPage * width;
            final float pageOffset = (float) offsetPixels / (float) width;
            final int totalDelta = (int) (x - mInitialMotionX);
            int nextPage = determineTargetPage(currentPage, pageOffset, initialVelocity, totalDelta);
            setCurrentItemInternal(nextPage, true, true, initialVelocity);

            mActivePointerId = INVALID_POINTER;
            endDrag();
        } else if (mLastPosition >= 0) {
            final int currentPosition = getPositionByXY((int) x, (int) y);
            DEBUG_LOG("Touch up!!! currentPosition=" + currentPosition);
            if (currentPosition == mLastPosition) {
                onItemClick(currentPosition);
            }
        }
        break;
    }
    case MotionEvent.ACTION_CANCEL:
        DEBUG_LOG("Touch cancel!!!");
        if (mLastDragged >= 0) {
            rearrange();
        } else if (mIsBeingDragged) {
            scrollToItem(mCurItem, true, 0, false);
            mActivePointerId = INVALID_POINTER;
            endDrag();
        }
        break;
    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int index = MotionEventCompat.getActionIndex(ev);
        final float x = MotionEventCompat.getX(ev, index);
        mLastMotionX = x;
        mActivePointerId = MotionEventCompat.getPointerId(ev, index);
        break;
    }
    case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        mLastMotionX = MotionEventCompat.getX(ev, MotionEventCompat.findPointerIndex(ev, mActivePointerId));
        break;
    }
    if (needsInvalidate) {
        ViewCompat.postInvalidateOnAnimation(this);
    }
    return true;
}

From source file:com.bright.cloudutils.view.ResideLayout.java

@SuppressLint("ClickableViewAccessibility")
@Override//from w  w  w  . jav  a 2 s .  c  om
public boolean onTouchEvent(@NonNull MotionEvent ev) {
    if (!mCanSlide) {
        return super.onTouchEvent(ev);
    }

    mDragHelper.processTouchEvent(ev);

    final int action = ev.getAction();

    switch (action & MotionEventCompat.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        mInitialMotionX = x;
        mInitialMotionY = y;
        break;
    }

    case MotionEvent.ACTION_UP: {
        if (isDimmed(mSlideableView)) {
            final float x = ev.getX();
            final float y = ev.getY();
            final float dx = x - mInitialMotionX;
            final float dy = y - mInitialMotionY;
            final int slop = mDragHelper.getTouchSlop();
            if (dx * dx + dy * dy < slop * slop && mDragHelper.isViewUnder(mSlideableView, (int) x, (int) y)) {
                // Taps close a dimmed open pane.
                closePane();
                break;
            }
        }
        break;
    }
    }

    return true;
}

From source file:com.icloud.listenbook.base.view.DraggableGridViewPager.java

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    /*/*from ww w. j a  v a 2s  . c o  m*/
     * 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.
     */

    final int action = ev.getAction() & MotionEventCompat.ACTION_MASK;

    // Always take care of the touch gesture being complete.
    // ? ??
    if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) {
        // Release the drag.
        DEBUG_LOG("Intercept done!");
        mIsBeingDragged = false;
        mIsUnableToDrag = false;
        mActivePointerId = INVALID_POINTER;
        if (mVelocityTracker != null) {
            mVelocityTracker.recycle();
            mVelocityTracker = null;
        }
        return false;
    }

    // Nothing more to do here if we have decided whether or not we
    // are dragging.
    /*
     * ??,? 
     */
    if (action != MotionEvent.ACTION_DOWN) {
        if (mIsBeingDragged || mLastDragged >= 0) {
            DEBUG_LOG("Intercept returning true!");
            return true;
        }
        if (mIsUnableToDrag) {
            DEBUG_LOG("Intercept returning false!");
            return false;
        }
    }

    switch (action) {
    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 = MotionEventCompat.findPointerIndex(ev, activePointerId);
        final float x = MotionEventCompat.getX(ev, pointerIndex);
        final float dx = x - mLastMotionX;
        final float xDiff = Math.abs(dx);
        final float y = MotionEventCompat.getY(ev, pointerIndex);
        final float yDiff = Math.abs(y - mInitialMotionY);
        DEBUG_LOG("***Moved to " + x + "," + y + " diff=" + xDiff + "," + yDiff);

        if (xDiff > mTouchSlop && xDiff * 0.5f > yDiff) {
            DEBUG_LOG("***Starting drag!");
            mIsBeingDragged = true;
            requestParentDisallowInterceptTouchEvent(true);
            setScrollState(SCROLL_STATE_DRAGGING);
            mLastMotionX = dx > 0 ? mInitialMotionX + mTouchSlop : mInitialMotionX - mTouchSlop;
            mLastMotionY = y;
            setScrollingCacheEnabled(true);
        } else if (yDiff > mTouchSlop) {
            // The finger has moved enough in the vertical
            // direction to be counted as a drag... abort
            // any attempt to drag horizontally, to work correctly
            // with children that have scrolling containers.
            DEBUG_LOG("***Unable to drag!");
            mIsUnableToDrag = true;
        }
        if (mIsBeingDragged) {
            // Scroll to follow the motion event
            if (performDrag(x)) {
                ViewCompat.postInvalidateOnAnimation(this);
            }
        }
        break;
    }

    case MotionEvent.ACTION_DOWN: {
        /*
         * Remember location of down touch. ACTION_DOWN always refers to
         * pointer index 0.
         */
        // ?
        mLastMotionX = mInitialMotionX = ev.getX();
        mLastMotionY = mInitialMotionY = ev.getY();
        mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
        mIsUnableToDrag = false;

        mScroller.computeScrollOffset();
        /*
         *  mScroller   ?? ?
         */
        if (mScrollState == SCROLL_STATE_SETTLING
                && Math.abs(mScroller.getFinalX() - mScroller.getCurrX()) > mCloseEnough) {
            // Let the user 'catch' the pager as it animates.
            mScroller.abortAnimation();
            mIsBeingDragged = true;
            requestParentDisallowInterceptTouchEvent(true);
            setScrollState(SCROLL_STATE_DRAGGING);
        } else {
            completeScroll(false);
            mIsBeingDragged = false;
        }

        DEBUG_LOG("***Down at " + mLastMotionX + "," + mLastMotionY + " mIsBeingDragged=" + mIsBeingDragged
                + " mIsUnableToDrag=" + mIsUnableToDrag);
        mLastDragged = -1;
        break;
    }

    case MotionEventCompat.ACTION_POINTER_UP:
        onSecondaryPointerUp(ev);
        break;
    }

    if (mVelocityTracker == null) {
        mVelocityTracker = VelocityTracker.obtain();
    }
    // 
    mVelocityTracker.addMovement(ev);
    /*
     * ???
     */
    /*
     * The only time we want to intercept motion events is if we are in the
     * drag mode.
     */
    return mIsBeingDragged;
}

From source file:com.android.dialer.widget.OverlappingPaneLayout.java

@Override
public boolean onTouchEvent(MotionEvent ev) {
    if (!mCanSlide) {
        return super.onTouchEvent(ev);
    }//from   ww w.  j  a va2  s  . c o  m

    mDragHelper.processTouchEvent(ev);

    final int action = ev.getAction();
    boolean wantTouchEvents = true;

    switch (action & MotionEventCompat.ACTION_MASK) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        mInitialMotionX = x;
        mInitialMotionY = y;
        break;
    }
    }

    return wantTouchEvents;
}