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

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

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Introduction

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

Prototype

public static float getX(MotionEvent event, int pointerIndex)

Source Link

Document

Call MotionEvent#getX(int) .

Usage

From source file:com.example.zw.demolist.widget.ViewDragHelper.java

/**
 * Check if this event as provided to the parent view's onInterceptTouchEvent should
 * cause the parent to intercept the touch event stream.
 *
 * @param ev MotionEvent provided to onInterceptTouchEvent
 * @return true if the parent view should return true from onInterceptTouchEvent
 *///from ww w. j ava2s  .  c o m
public boolean shouldInterceptTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);
    final int actionIndex = MotionEventCompat.getActionIndex(ev);

    if (action == MotionEvent.ACTION_DOWN) {
        // Reset things for a new event stream, just in case we didn't get
        // the whole previous stream.
        cancel();
    }

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

    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        final int pointerId = MotionEventCompat.getPointerId(ev, 0);
        saveInitialMotion(x, y, pointerId);

        final View toCapture = findTopChildUnder((int) x, (int) y);

        // Catch a settling view if possible.
        if (toCapture == mCapturedView && mDragState == STATE_SETTLING) {
            tryCaptureViewForDrag(toCapture, pointerId);
        }

        final int edgesTouched = mInitialEdgesTouched[pointerId];
        if ((edgesTouched & mTrackingEdges) != 0) {
            mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
        }
        break;
    }

    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        final float x = MotionEventCompat.getX(ev, actionIndex);
        final float y = MotionEventCompat.getY(ev, actionIndex);

        saveInitialMotion(x, y, pointerId);

        // A ViewDragHelper can only manipulate one view at a time.
        if (mDragState == STATE_IDLE) {
            final int edgesTouched = mInitialEdgesTouched[pointerId];
            if ((edgesTouched & mTrackingEdges) != 0) {
                mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
            }
        } else if (mDragState == STATE_SETTLING) {
            // Catch a settling view if possible.
            final View toCapture = findTopChildUnder((int) x, (int) y);
            if (toCapture == mCapturedView) {
                tryCaptureViewForDrag(toCapture, pointerId);
            }
        }
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        if (mInitialMotionX == null || mInitialMotionY == null)
            break;

        // First to cross a touch slop over a draggable view wins. Also report edge drags.
        final int pointerCount = MotionEventCompat.getPointerCount(ev);
        for (int i = 0; i < pointerCount; i++) {
            final int pointerId = MotionEventCompat.getPointerId(ev, i);
            final float x = MotionEventCompat.getX(ev, i);
            final float y = MotionEventCompat.getY(ev, i);
            final float dx = x - mInitialMotionX[pointerId];
            final float dy = y - mInitialMotionY[pointerId];

            final View toCapture = findTopChildUnder((int) x, (int) y);
            final boolean pastSlop = toCapture != null && checkTouchSlop(toCapture, dx, dy);
            if (pastSlop) {
                // check the callback's
                // getView[Horizontal|Vertical]DragRange methods to know
                // if you can move at all along an axis, then see if it
                // would clamp to the same value. If you can't move at
                // all in every dimension with a nonzero range, bail.
                final int oldLeft = toCapture.getLeft();
                final int targetLeft = oldLeft + (int) dx;
                final int newLeft = mCallback.clampViewPositionHorizontal(toCapture, targetLeft, (int) dx);
                final int oldTop = toCapture.getTop();
                final int targetTop = oldTop + (int) dy;
                final int newTop = mCallback.clampViewPositionVertical(toCapture, targetTop, (int) dy);
                final int horizontalDragRange = mCallback.getViewHorizontalDragRange(toCapture);
                final int verticalDragRange = mCallback.getViewVerticalDragRange(toCapture);
                if ((horizontalDragRange == 0 || horizontalDragRange > 0 && newLeft == oldLeft)
                        && (verticalDragRange == 0 || verticalDragRange > 0 && newTop == oldTop)) {
                    break;
                }
            }
            reportNewEdgeDrags(dx, dy, pointerId);
            if (mDragState == STATE_DRAGGING) {
                // Callback might have started an edge drag
                break;
            }

            if (pastSlop && tryCaptureViewForDrag(toCapture, pointerId)) {
                break;
            }
        }
        saveLastMotion(ev);
        break;
    }

    case MotionEventCompat.ACTION_POINTER_UP: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        clearMotionHistory(pointerId);
        break;
    }

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL: {
        cancel();
        break;
    }
    default:
        break;
    }

    return mDragState == STATE_DRAGGING;
}

From source file:net.gy.SwiftFrameWork.UI.view.gesture.CustomViewDragHelper.java

/**
 * Check if this event as provided to the parent view's onInterceptTouchEvent should
 * cause the parent to intercept the touch event stream.
 *
 * @param ev MotionEvent provided to onInterceptTouchEvent
 * @return true if the parent view should return true from onInterceptTouchEvent
 *///from w  w  w  .  j  ava2s  .  c om
public boolean shouldInterceptTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);
    final int actionIndex = MotionEventCompat.getActionIndex(ev);

    if (action == MotionEvent.ACTION_DOWN) {
        // Reset things for a new event stream, just in case we didn't get
        // the whole previous stream.
        cancel();
    }

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

    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        final int pointerId = MotionEventCompat.getPointerId(ev, 0);
        saveInitialMotion(x, y, pointerId);

        final View toCapture = findTopChildUnder((int) x, (int) y);

        // Catch a settling view if possible.
        if (toCapture == mCapturedView && mDragState == STATE_SETTLING) {
            tryCaptureViewForDrag(toCapture, pointerId);
        }

        final int edgesTouched = mInitialEdgesTouched[pointerId];
        if ((edgesTouched & mTrackingEdges) != 0) {
            mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
        }
        break;
    }

    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        final float x = MotionEventCompat.getX(ev, actionIndex);
        final float y = MotionEventCompat.getY(ev, actionIndex);

        saveInitialMotion(x, y, pointerId);

        // A ViewDragHelper can only manipulate one view at a time.
        if (mDragState == STATE_IDLE) {
            final int edgesTouched = mInitialEdgesTouched[pointerId];
            if ((edgesTouched & mTrackingEdges) != 0) {
                mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
            }
        } else if (mDragState == STATE_SETTLING) {
            // Catch a settling view if possible.
            final View toCapture = findTopChildUnder((int) x, (int) y);
            if (toCapture == mCapturedView) {
                tryCaptureViewForDrag(toCapture, pointerId);
            }
        }
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        if (mInitialMotionX == null || mInitialMotionY == null)
            break;

        // First to cross a touch slop over a draggable view wins. Also report edge drags.
        final int pointerCount = MotionEventCompat.getPointerCount(ev);
        for (int i = 0; i < pointerCount; i++) {
            final int pointerId = MotionEventCompat.getPointerId(ev, i);
            final float x = MotionEventCompat.getX(ev, i);
            final float y = MotionEventCompat.getY(ev, i);
            final float dx = x - mInitialMotionX[pointerId];
            final float dy = y - mInitialMotionY[pointerId];

            final View toCapture = findTopChildUnder((int) x, (int) y);
            final boolean pastSlop = toCapture != null && checkTouchSlop(toCapture, dx, dy);
            if (pastSlop) {
                // check the callback's
                // getView[Horizontal|Vertical]DragRange methods to know
                // if you can move at all along an axis, then see if it
                // would clamp to the same type. If you can't move at
                // all in every dimension with a nonzero range, bail.
                final int oldLeft = toCapture.getLeft();
                final int targetLeft = oldLeft + (int) dx;
                final int newLeft = mCallback.clampViewPositionHorizontal(toCapture, targetLeft, (int) dx);
                final int oldTop = toCapture.getTop();
                final int targetTop = oldTop + (int) dy;
                final int newTop = mCallback.clampViewPositionVertical(toCapture, targetTop, (int) dy);
                final int horizontalDragRange = mCallback.getViewHorizontalDragRange(toCapture);
                final int verticalDragRange = mCallback.getViewVerticalDragRange(toCapture);
                if ((horizontalDragRange == 0 || horizontalDragRange > 0 && newLeft == oldLeft)
                        && (verticalDragRange == 0 || verticalDragRange > 0 && newTop == oldTop)) {
                    break;
                }
            }
            reportNewEdgeDrags(dx, dy, pointerId);
            if (mDragState == STATE_DRAGGING) {
                // Callback might have started an edge drag
                break;
            }

            if (pastSlop && tryCaptureViewForDrag(toCapture, pointerId)) {
                break;
            }
        }
        saveLastMotion(ev);
        break;
    }

    case MotionEventCompat.ACTION_POINTER_UP: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        clearMotionHistory(pointerId);
        break;
    }

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL: {
        cancel();
        break;
    }
    }

    return mDragState == STATE_DRAGGING;
}

From source file:com.sun.swipebacklayout.lib.ViewDragHelper.java

/**
 * Check if this event as provided to the parent view's
 * onInterceptTouchEvent should cause the parent to intercept the touch
 * event stream.// w  ww  .  ja  va2 s . c om
 * 
 * @param ev MotionEvent provided to onInterceptTouchEvent
 * @return true if the parent view should return true from
 *         onInterceptTouchEvent
 */
public boolean shouldInterceptTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);
    final int actionIndex = MotionEventCompat.getActionIndex(ev);

    if (action == MotionEvent.ACTION_DOWN) {
        // Reset things for a new event stream, just in case we didn't get
        // the whole previous stream.
        cancel();
    }

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

    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        final int pointerId = MotionEventCompat.getPointerId(ev, 0);
        saveInitialMotion(x, y, pointerId);

        final View toCapture = findTopChildUnder((int) x, (int) y);

        // Catch a settling view if possible.
        if (toCapture == mCapturedView && mDragState == STATE_SETTLING) {
            tryCaptureViewForDrag(toCapture, pointerId);
        }

        final int edgesTouched = mInitialEdgesTouched[pointerId];
        if ((edgesTouched & mTrackingEdges) != 0) {
            mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
        }
        break;
    }

    case MotionEventCompat.ACTION_POINTER_DOWN: {
        //               if(true)               return true;
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        final float x = MotionEventCompat.getX(ev, actionIndex);
        final float y = MotionEventCompat.getY(ev, actionIndex);

        saveInitialMotion(x, y, pointerId);

        // A ViewDragHelper can only manipulate one view at a time.
        if (mDragState == STATE_IDLE) {
            final int edgesTouched = mInitialEdgesTouched[pointerId];
            if ((edgesTouched & mTrackingEdges) != 0) {
                mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
            }
        } else if (mDragState == STATE_SETTLING) {
            // Catch a settling view if possible.
            final View toCapture = findTopChildUnder((int) x, (int) y);
            if (toCapture == mCapturedView) {
                tryCaptureViewForDrag(toCapture, pointerId);
            }
        }
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        // First to cross a touch slop over a draggable view wins. Also
        // report edge drags.
        final int pointerCount = MotionEventCompat.getPointerCount(ev);
        for (int i = 0; i < pointerCount; i++) {
            final int pointerId = MotionEventCompat.getPointerId(ev, i);
            final float x = MotionEventCompat.getX(ev, i);
            final float y = MotionEventCompat.getY(ev, i);
            final float dx = x - mInitialMotionX[pointerId];
            final float dy = y - mInitialMotionY[pointerId];

            reportNewEdgeDrags(dx, dy, pointerId);
            if (mDragState == STATE_DRAGGING) {
                // Callback might have started an edge drag
                break;
            }

            final View toCapture = findTopChildUnder((int) x, (int) y);
            if (toCapture != null && checkTouchSlop(toCapture, dx, dy)
                    && tryCaptureViewForDrag(toCapture, pointerId)) {
                break;
            }
        }
        saveLastMotion(ev);
        break;
    }

    case MotionEventCompat.ACTION_POINTER_UP: {
        //               if(true)               return true;
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        clearMotionHistory(pointerId);
        break;
    }

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL: {
        cancel();
        break;
    }
    }

    return mDragState == STATE_DRAGGING;
}

From source file:com.jihf.swipbackhelper.ViewDragHelper.java

/**
 * Check if this event as provided to the parent view's
 * onInterceptTouchEvent should cause the parent to intercept the touch
 * event stream.//  w w w  .  java  2s.  com
 *
 * @param ev MotionEvent provided to onInterceptTouchEvent
 * @return true if the parent view should return true from
 * onInterceptTouchEvent
 */
public boolean shouldInterceptTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);
    final int actionIndex = MotionEventCompat.getActionIndex(ev);

    if (action == MotionEvent.ACTION_DOWN) {
        // Reset things for a new event stream, just in case we didn't get
        // the whole previous stream.
        cancel();
    }

    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        final int pointerId = MotionEventCompat.getPointerId(ev, 0);
        saveInitialMotion(x, y, pointerId);

        final View toCapture = findTopChildUnder((int) x, (int) y);

        // Catch a settling view if possible.
        tryCaptureViewForDrag(toCapture, pointerId);

        if (mDragState == STATE_SETTLING) {
            setDragState(STATE_DRAGGING);
        } else if (mDragState == STATE_IDLE) {
            final int edgesTouched = mInitialEdgeTouched[pointerId];
            if ((edgesTouched & mTrackingEdges) != 0) {
                mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
            }
            setDragState(STATE_JUDGING);
        }
        break;
    }
    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        final float x = MotionEventCompat.getX(ev, actionIndex);
        final float y = MotionEventCompat.getY(ev, actionIndex);
        saveInitialMotion(x, y, pointerId);
        break;
    }
    case MotionEvent.ACTION_MOVE: {
        if (mDragState == STATE_JUDGING) {
            if (mVelocityTracker == null) {
                mVelocityTracker = VelocityTracker.obtain();
            }
            if (mDragState == STATE_DRAGGING) {
                mVelocityTracker.addMovement(ev);
            }
            final int i = MotionEventCompat.findPointerIndex(ev, mActivePointerId);

            final float x = MotionEventCompat.getX(ev, i);
            final float y = MotionEventCompat.getY(ev, i);
            final float dx = x - mInitialMotionX[mActivePointerId];
            final float dy = y - mInitialMotionY[mActivePointerId];

            reportNewEdgeDrags(dx, dy, mActivePointerId);

            final View toCapture = findTopChildUnder((int) x, (int) y);
            int slop = checkTouchSlop(toCapture, dx, dy);

            if (slop == -1) {
                cancel();
            } else if (slop > 0 && tryCaptureViewForDrag(toCapture, mActivePointerId)) {
                break;
            }
            saveLastMotion(ev);
        }
        break;
    }
    case MotionEventCompat.ACTION_POINTER_UP: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        clearMotionHistory(pointerId);
        break;
    }

    case MotionEvent.ACTION_UP: {
        releaseViewForPointerUp();
        cancel();
        break;
    }

    case MotionEvent.ACTION_CANCEL: {
        dispatchViewReleased(0, 0);
        cancel();
        break;
    }
    }
    return mDragState == STATE_DRAGGING;
}

From source file:co.codecrunch.musicplayerlite.slidinguppanelhelper.ViewDragHelper.java

/**
 * Check if this event as provided to the parent view's
 * onInterceptTouchEvent should cause the parent to intercept the touch
 * event stream./*from   w w w.  j  a v  a 2  s  .  c om*/
 *
 * @param ev
 *            MotionEvent provided to onInterceptTouchEvent
 * @return true if the parent view should return true from
 *         onInterceptTouchEvent
 */
public boolean shouldInterceptTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);
    final int actionIndex = MotionEventCompat.getActionIndex(ev);

    if (action == MotionEvent.ACTION_DOWN) {
        // Reset things for a new event stream, just in case we didn't get
        // the whole previous stream.
        cancel();
    }

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

    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        final int pointerId = MotionEventCompat.getPointerId(ev, 0);
        saveInitialMotion(x, y, pointerId);

        final View toCapture = findTopChildUnder((int) x, (int) y);

        // Catch a settling view if possible.
        if (toCapture == mCapturedView && mDragState == STATE_SETTLING) {
            tryCaptureViewForDrag(toCapture, pointerId);
        }

        final int edgesTouched = mInitialEdgesTouched[pointerId];
        if ((edgesTouched & mTrackingEdges) != 0) {
            mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
        }
        break;
    }

    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        final float x = MotionEventCompat.getX(ev, actionIndex);
        final float y = MotionEventCompat.getY(ev, actionIndex);

        saveInitialMotion(x, y, pointerId);

        // A ViewDragHelper can only manipulate one view at a time.
        if (mDragState == STATE_IDLE) {
            final int edgesTouched = mInitialEdgesTouched[pointerId];
            if ((edgesTouched & mTrackingEdges) != 0) {
                mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
            }
        } else if (mDragState == STATE_SETTLING) {
            // Catch a settling view if possible.
            final View toCapture = findTopChildUnder((int) x, (int) y);
            if (toCapture == mCapturedView) {
                tryCaptureViewForDrag(toCapture, pointerId);
            }
        }
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        // First to cross a touch slop over a draggable view wins. Also
        // report edge drags.
        final int pointerCount = MotionEventCompat.getPointerCount(ev);
        for (int i = 0; i < pointerCount && mInitialMotionX != null && mInitialMotionY != null; i++) {
            final int pointerId = MotionEventCompat.getPointerId(ev, i);
            if (pointerId >= mInitialMotionX.length || pointerId >= mInitialMotionY.length) {
                continue;
            }
            final float x = MotionEventCompat.getX(ev, i);
            final float y = MotionEventCompat.getY(ev, i);
            final float dx = x - mInitialMotionX[pointerId];
            final float dy = y - mInitialMotionY[pointerId];

            reportNewEdgeDrags(dx, dy, pointerId);
            if (mDragState == STATE_DRAGGING) {
                // Callback might have started an edge drag
                break;
            }

            final View toCapture = findTopChildUnder((int) mInitialMotionX[pointerId],
                    (int) mInitialMotionY[pointerId]);
            if (toCapture != null && checkTouchSlop(toCapture, dx, dy)
                    && tryCaptureViewForDrag(toCapture, pointerId)) {
                break;
            }
        }
        saveLastMotion(ev);
        break;
    }

    case MotionEventCompat.ACTION_POINTER_UP: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        clearMotionHistory(pointerId);
        break;
    }

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL: {
        cancel();
        break;
    }
    }

    return mDragState == STATE_DRAGGING;
}

From source file:com.android.kit.swipeback.ViewDragHelper.java

/**
 * Check if this event as provided to the parent view's
 * onInterceptTouchEvent should cause the parent to intercept the touch
 * event stream.// w w w .j  av  a2s  .  c  o m
 *
 * @param ev MotionEvent provided to onInterceptTouchEvent
 * @return true if the parent view should return true from
 * onInterceptTouchEvent
 */
public boolean shouldInterceptTouchEvent(MotionEvent ev) {

    final int action = MotionEventCompat.getActionMasked(ev);
    final int actionIndex = MotionEventCompat.getActionIndex(ev);

    if (action == MotionEvent.ACTION_DOWN) {
        // Reset things for a new event stream, just in case we didn't get
        // the whole previous stream.
        cancel();
    }

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

    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        final int pointerId = MotionEventCompat.getPointerId(ev, 0);
        saveInitialMotion(x, y, pointerId);

        final View toCapture = findTopChildUnder((int) x, (int) y);

        // Catch a settling view if possible.
        tryCaptureViewForDrag(toCapture, pointerId);

        final int edgesTouched = mInitialEdgeTouched[pointerId];
        if ((edgesTouched & mTrackingEdges) != 0) {
            mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
        }
        break;
    }
    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        final float x = MotionEventCompat.getX(ev, actionIndex);
        final float y = MotionEventCompat.getY(ev, actionIndex);

        saveInitialMotion(x, y, pointerId);
        break;
    }
    case MotionEvent.ACTION_MOVE: {
        if (mDragState == STATE_JUDGING) {

            final int i = MotionEventCompat.findPointerIndex(ev, mActivePointerId);

            final float x = MotionEventCompat.getX(ev, i);
            final float y = MotionEventCompat.getY(ev, i);
            final float dx = x - mInitialMotionX[mActivePointerId];
            final float dy = y - mInitialMotionY[mActivePointerId];

            reportNewEdgeDrags(dx, dy, mActivePointerId);

            final View toCapture = findTopChildUnder((int) x, (int) y);
            int slop = checkTouchSlop(toCapture, dx, dy);

            if (slop == -1)
                cancel();
            else if (slop > 0 && tryCaptureViewForDrag(toCapture, mActivePointerId)) {
                break;
            }
            saveLastMotion(ev);
        }
        break;
    }
    case MotionEventCompat.ACTION_POINTER_UP: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        clearMotionHistory(pointerId);
        break;
    }

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL: {
        cancel();
        break;
    }

    }
    return mDragState == STATE_DRAGGING;
}

From source file:com.fastbuildlibrary.widget.swipebacklayout.ViewDragHelper.java

/**
 * Check if this event as provided to the parent view's
 * onInterceptTouchEvent should cause the parent to intercept the touch
 * event stream./*from   www  .j av a 2 s.co m*/
 *
 * @param ev MotionEvent provided to onInterceptTouchEvent
 * @return true if the parent view should return true from
 * onInterceptTouchEvent
 */
public boolean shouldInterceptTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);
    final int actionIndex = MotionEventCompat.getActionIndex(ev);

    if (action == MotionEvent.ACTION_DOWN) {
        // Reset things for a new event stream, just in case we didn't execute
        // the whole previous stream.
        cancel();
    }

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

    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        final int pointerId = MotionEventCompat.getPointerId(ev, 0);
        saveInitialMotion(x, y, pointerId);

        final View toCapture = findTopChildUnder((int) x, (int) y);

        // Catch a settling view if possible.
        if (toCapture == mCapturedView && mDragState == STATE_SETTLING) {
            tryCaptureViewForDrag(toCapture, pointerId);
        }

        final int edgesTouched = mInitialEdgeTouched[pointerId];
        if ((edgesTouched & mTrackingEdges) != 0) {
            mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
        }
        break;
    }

    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        final float x = MotionEventCompat.getX(ev, actionIndex);
        final float y = MotionEventCompat.getY(ev, actionIndex);

        saveInitialMotion(x, y, pointerId);

        // A ViewDragHelper can only manipulate one view at a time.
        if (mDragState == STATE_IDLE) {
            final int edgesTouched = mInitialEdgeTouched[pointerId];
            if ((edgesTouched & mTrackingEdges) != 0) {
                mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
            }
        } else if (mDragState == STATE_SETTLING) {
            // Catch a settling view if possible.
            final View toCapture = findTopChildUnder((int) x, (int) y);
            if (toCapture == mCapturedView) {
                tryCaptureViewForDrag(toCapture, pointerId);
            }
        }
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        // First to cross a touch slop over a draggable view wins. Also
        // report edge drags.
        final int pointerCount = MotionEventCompat.getPointerCount(ev);
        for (int i = 0; i < pointerCount; i++) {
            final int pointerId = MotionEventCompat.getPointerId(ev, i);
            final float x = MotionEventCompat.getX(ev, i);
            final float y = MotionEventCompat.getY(ev, i);
            final float dx = x - mInitialMotionX[pointerId];
            final float dy = y - mInitialMotionY[pointerId];

            reportNewEdgeDrags(dx, dy, pointerId);
            if (mDragState == STATE_DRAGGING) {
                // Callback might have started an edge drag
                break;
            }

            final View toCapture = findTopChildUnder((int) x, (int) y);
            if (toCapture != null && checkTouchSlop(toCapture, dx, dy)
                    && tryCaptureViewForDrag(toCapture, pointerId)) {
                break;
            }
        }
        saveLastMotion(ev);
        break;
    }

    case MotionEventCompat.ACTION_POINTER_UP: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        clearMotionHistory(pointerId);
        break;
    }

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL: {
        cancel();
        break;
    }
    }

    return mDragState == STATE_DRAGGING;
}

From source file:com.appsummary.luoxf.mylibrary.swipbackhelper.ViewDragHelper.java

/**
 * Check if this event as provided to the parent view's
 * onInterceptTouchEvent should cause the parent to intercept the touch
 * event stream./*from  ww w .j a  v a 2s .  c  o m*/
 *
 * @param ev MotionEvent provided to onInterceptTouchEvent
 * @return true if the parent view should return true from
 * onInterceptTouchEvent
 */
public boolean shouldInterceptTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);
    final int actionIndex = MotionEventCompat.getActionIndex(ev);

    if (action == MotionEvent.ACTION_DOWN) {
        // Reset things for a new event stream, just in case we didn't get
        // the whole previous stream.
        cancel();
    }

    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        final int pointerId = MotionEventCompat.getPointerId(ev, 0);
        saveInitialMotion(x, y, pointerId);

        final View toCapture = findTopChildUnder((int) x, (int) y);

        // Catch a settling view if possible.
        tryCaptureViewForDrag(toCapture, pointerId);

        if (mDragState == STATE_SETTLING) {
            setDragState(STATE_DRAGGING);
        } else if (mDragState == STATE_IDLE) {
            final int edgesTouched = mInitialEdgeTouched[pointerId];
            if ((edgesTouched & mTrackingEdges) != 0) {
                mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
            }
            setDragState(STATE_JUDGING);
        }
        break;
    }
    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        final float x = MotionEventCompat.getX(ev, actionIndex);
        final float y = MotionEventCompat.getY(ev, actionIndex);
        saveInitialMotion(x, y, pointerId);
        break;
    }
    case MotionEvent.ACTION_MOVE: {
        if (mDragState == STATE_JUDGING) {
            if (mVelocityTracker == null) {
                mVelocityTracker = VelocityTracker.obtain();
            }
            if (mDragState == STATE_DRAGGING)
                mVelocityTracker.addMovement(ev);
            final int i = MotionEventCompat.findPointerIndex(ev, mActivePointerId);

            final float x = MotionEventCompat.getX(ev, i);
            final float y = MotionEventCompat.getY(ev, i);
            final float dx = x - mInitialMotionX[mActivePointerId];
            final float dy = y - mInitialMotionY[mActivePointerId];

            reportNewEdgeDrags(dx, dy, mActivePointerId);

            final View toCapture = findTopChildUnder((int) x, (int) y);
            int slop = checkTouchSlop(toCapture, dx, dy);

            if (slop == -1)
                cancel();
            else if (slop > 0 && tryCaptureViewForDrag(toCapture, mActivePointerId)) {
                break;
            }
            saveLastMotion(ev);
        }
        break;
    }
    case MotionEventCompat.ACTION_POINTER_UP: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        clearMotionHistory(pointerId);
        break;
    }

    case MotionEvent.ACTION_UP: {
        releaseViewForPointerUp();
        cancel();
        break;
    }

    case MotionEvent.ACTION_CANCEL: {
        dispatchViewReleased(0, 0);
        cancel();
        break;
    }

    }
    return mDragState == STATE_DRAGGING;
}

From source file:com.cylee.dragcontentviewpager.ViewDragHelper.java

/**
 * Check if this event as provided to the parent view's onInterceptTouchEvent should
 * cause the parent to intercept the touch event stream.
 *
 * @param ev MotionEvent provided to onInterceptTouchEvent
 * @return true if the parent view should return true from onInterceptTouchEvent
 *///from  w  w  w  .  j  a v a  2s.  com
public boolean shouldInterceptTouchEvent(MotionEvent ev) {
    final int action = MotionEventCompat.getActionMasked(ev);
    final int actionIndex = MotionEventCompat.getActionIndex(ev);

    if (action == MotionEvent.ACTION_DOWN) {
        // Reset things for a new event stream, just in case we didn't getInstance
        // the whole previous stream.
        cancel();
    }

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

    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        final int pointerId = MotionEventCompat.getPointerId(ev, 0);
        saveInitialMotion(x, y, pointerId);

        final View toCapture = findTopChildUnder((int) x, (int) y);

        // Catch a settling view if possible.
        if (toCapture == mCapturedView && mDragState == STATE_SETTLING) {
            tryCaptureViewForDrag(toCapture, pointerId);
        }

        final int edgesTouched = mInitialEdgesTouched[pointerId];
        if ((edgesTouched & mTrackingEdges) != 0) {
            mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
        }
        break;
    }

    case MotionEventCompat.ACTION_POINTER_DOWN: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        final float x = MotionEventCompat.getX(ev, actionIndex);
        final float y = MotionEventCompat.getY(ev, actionIndex);

        saveInitialMotion(x, y, pointerId);

        // A ViewDragHelper can only manipulate one view at a time.
        if (mDragState == STATE_IDLE) {
            final int edgesTouched = mInitialEdgesTouched[pointerId];
            if ((edgesTouched & mTrackingEdges) != 0) {
                mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
            }
        } else if (mDragState == STATE_SETTLING) {
            // Catch a settling view if possible.
            final View toCapture = findTopChildUnder((int) x, (int) y);
            if (toCapture == mCapturedView) {
                tryCaptureViewForDrag(toCapture, pointerId);
            }
        }
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        // First to cross a touch slop over a draggable view wins. Also report edge drags.
        final int pointerCount = MotionEventCompat.getPointerCount(ev);
        for (int i = 0; i < pointerCount; i++) {
            final int pointerId = MotionEventCompat.getPointerId(ev, i);
            final float x = MotionEventCompat.getX(ev, i);
            final float y = MotionEventCompat.getY(ev, i);
            final float dx = x - mInitialMotionX[pointerId];
            final float dy = y - mInitialMotionY[pointerId];

            final View toCapture = findTopChildUnder((int) x, (int) y);
            final boolean pastSlop = toCapture != null && checkTouchSlop(toCapture, dx, dy);
            if (pastSlop) {
                // check the callback's
                // getView[Horizontal|Vertical]DragRange methods to know
                // if you can move at all along an axis, then see if it
                // would clamp to the same value. If you can't move at
                // all in every dimension with a nonzero range, bail.
                final int oldLeft = toCapture.getLeft();
                final int targetLeft = oldLeft + (int) dx;
                final int newLeft = mCallback.clampViewPositionHorizontal(toCapture, targetLeft, (int) dx);
                final int oldTop = toCapture.getTop();
                final int targetTop = oldTop + (int) dy;
                final int newTop = mCallback.clampViewPositionVertical(toCapture, targetTop, (int) dy);
                final int horizontalDragRange = mCallback.getViewHorizontalDragRange(toCapture);
                final int verticalDragRange = mCallback.getViewVerticalDragRange(toCapture);
                if ((horizontalDragRange == 0 || horizontalDragRange > 0 && newLeft == oldLeft)
                        && (verticalDragRange == 0 || verticalDragRange > 0 && newTop == oldTop)) {
                    break;
                }
            }
            reportNewEdgeDrags(dx, dy, pointerId);
            if (mDragState == STATE_DRAGGING) {
                // Callback might have started an edge drag
                break;
            }

            if (pastSlop && !canScroll(toCapture, true, (int) dx, (int) dy, (int) x, (int) y)
                    && tryCaptureViewForDrag(toCapture, pointerId)) {
                break;
            }
        }
        saveLastMotion(ev);
        break;
    }

    case MotionEventCompat.ACTION_POINTER_UP: {
        final int pointerId = MotionEventCompat.getPointerId(ev, actionIndex);
        clearMotionHistory(pointerId);
        break;
    }

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL: {
        cancel();
        break;
    }
    }

    return mDragState == STATE_DRAGGING;
}

From source file:com.cliff.hsj.ui.widget.swipeback.ViewDragHelper.java

/**
 * Check if this event as provided to the parent view's
 * onInterceptTouchEvent should cause the parent to intercept the touch
 * event stream./*from www.j  a v  a 2  s . c  o  m*/
 *
 * @param ev MotionEvent provided to onInterceptTouchEvent
 * @return true if the parent view should return true from
 * onInterceptTouchEvent
 */
public boolean shouldInterceptTouchEvent(MotionEvent ev) {

    final int action = MotionEventCompat.getActionMasked(ev);
    final int actionIndex = MotionEventCompat.getActionIndex(ev);

    if (action == MotionEvent.ACTION_DOWN) {
        // Reset things for a new event stream, just in case we didn't get
        // the whole previous stream.
        cancel();
    }

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

    switch (action) {
    case MotionEvent.ACTION_DOWN: {
        final float x = ev.getX();
        final float y = ev.getY();
        final int pointerId = MotionEventCompat.getPointerId(ev, 0);
        saveInitialMotion(x, y, pointerId);

        final View toCapture = findTopChildUnder((int) x, (int) y);

        // Catch a settling view if possible.
        if (toCapture == mCapturedView && mDragState == STATE_SETTLING) {
            tryCaptureViewForDrag(toCapture, pointerId);
        }

        final int edgesTouched = mInitialEdgeTouched[pointerId];
        if ((edgesTouched & mTrackingEdges) != 0) {
            mCallback.onEdgeTouched(edgesTouched & mTrackingEdges, pointerId);
        }
        break;
    }

    case MotionEvent.ACTION_MOVE: {
        // First to cross a touch slop over a draggable view wins. Also
        // report edge drags.

        final int pointerCount = MotionEventCompat.getPointerCount(ev);
        for (int i = 0; i < pointerCount; i++) {
            final int pointerId = MotionEventCompat.getPointerId(ev, i);
            final float x = MotionEventCompat.getX(ev, i);
            final float y = MotionEventCompat.getY(ev, i);
            final float dx = x - mInitialMotionX[pointerId];
            final float dy = y - mInitialMotionY[pointerId];

            reportNewEdgeDrags(dx, dy, pointerId);
            if (mDragState == STATE_DRAGGING) {
                // Callback might have started an edge drag
                break;
            }

            final View toCapture = findTopChildUnder((int) x, (int) y);
            int slop = checkTouchSlop(toCapture, dx, dy);
            if (slop == -1)
                cancel();
            else if (slop > 0 && tryCaptureViewForDrag(toCapture, pointerId)) {
                break;
            }
        }
        saveLastMotion(ev);
        break;
    }

    case MotionEvent.ACTION_UP:
    case MotionEvent.ACTION_CANCEL: {
        cancel();
        break;
    }
    }

    return mDragState == STATE_DRAGGING;
}