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

Example 81 with MotionEvent

use of android.view.MotionEvent in project carat by amplab.

the class Switch method cancelSuperTouch.

private void cancelSuperTouch(MotionEvent ev) {
    final MotionEvent cancel = MotionEvent.obtain(ev);
    cancel.setAction(MotionEvent.ACTION_CANCEL);
    super.onTouchEvent(cancel);
    cancel.recycle();
}

Example 82 with MotionEvent

use of android.view.MotionEvent in project platform_frameworks_base by android.

the class ScrollView method onTouchEvent.

@Override
public boolean onTouchEvent(MotionEvent ev) {
    initVelocityTrackerIfNotExists();
    MotionEvent vtev = MotionEvent.obtain(ev);
    final int actionMasked = ev.getActionMasked();
    if (actionMasked == MotionEvent.ACTION_DOWN) {
        mNestedYOffset = 0;
    }
    vtev.offsetLocation(0, mNestedYOffset);
    switch(actionMasked) {
        case MotionEvent.ACTION_DOWN:
            {
                if (getChildCount() == 0) {
                    return false;
                }
                if ((mIsBeingDragged = !mScroller.isFinished())) {
                    final ViewParent parent = getParent();
                    if (parent != null) {
                        parent.requestDisallowInterceptTouchEvent(true);
                    }
                }
                /*
                 * If being flinged and user touches, stop the fling. isFinished
                 * will be false if being flinged.
                 */
                if (!mScroller.isFinished()) {
                    mScroller.abortAnimation();
                    if (mFlingStrictSpan != null) {
                        mFlingStrictSpan.finish();
                        mFlingStrictSpan = null;
                    }
                }
                // Remember where the motion event started
                mLastMotionY = (int) ev.getY();
                mActivePointerId = ev.getPointerId(0);
                startNestedScroll(SCROLL_AXIS_VERTICAL);
                break;
            }
        case MotionEvent.ACTION_MOVE:
            final int activePointerIndex = ev.findPointerIndex(mActivePointerId);
            if (activePointerIndex == -1) {
                Log.e(TAG, "Invalid pointerId=" + mActivePointerId + " in onTouchEvent");
                break;
            }
            final int y = (int) ev.getY(activePointerIndex);
            int deltaY = mLastMotionY - y;
            if (dispatchNestedPreScroll(0, deltaY, mScrollConsumed, mScrollOffset)) {
                deltaY -= mScrollConsumed[1];
                vtev.offsetLocation(0, mScrollOffset[1]);
                mNestedYOffset += mScrollOffset[1];
            }
            if (!mIsBeingDragged && Math.abs(deltaY) > mTouchSlop) {
                final ViewParent parent = getParent();
                if (parent != null) {
                    parent.requestDisallowInterceptTouchEvent(true);
                }
                mIsBeingDragged = true;
                if (deltaY > 0) {
                    deltaY -= mTouchSlop;
                } else {
                    deltaY += mTouchSlop;
                }
            }
            if (mIsBeingDragged) {
                // Scroll to follow the motion event
                mLastMotionY = y - mScrollOffset[1];
                final int oldY = mScrollY;
                final int range = getScrollRange();
                final int overscrollMode = getOverScrollMode();
                boolean canOverscroll = overscrollMode == OVER_SCROLL_ALWAYS || (overscrollMode == OVER_SCROLL_IF_CONTENT_SCROLLS && range > 0);
                // calls onScrollChanged if applicable.
                if (overScrollBy(0, deltaY, 0, mScrollY, 0, range, 0, mOverscrollDistance, true) && !hasNestedScrollingParent()) {
                    // Break our velocity if we hit a scroll barrier.
                    mVelocityTracker.clear();
                }
                final int scrolledDeltaY = mScrollY - oldY;
                final int unconsumedY = deltaY - scrolledDeltaY;
                if (dispatchNestedScroll(0, scrolledDeltaY, 0, unconsumedY, mScrollOffset)) {
                    mLastMotionY -= mScrollOffset[1];
                    vtev.offsetLocation(0, mScrollOffset[1]);
                    mNestedYOffset += mScrollOffset[1];
                } else if (canOverscroll) {
                    final int pulledToY = oldY + deltaY;
                    if (pulledToY < 0) {
                        mEdgeGlowTop.onPull((float) deltaY / getHeight(), ev.getX(activePointerIndex) / getWidth());
                        if (!mEdgeGlowBottom.isFinished()) {
                            mEdgeGlowBottom.onRelease();
                        }
                    } else if (pulledToY > range) {
                        mEdgeGlowBottom.onPull((float) deltaY / getHeight(), 1.f - ev.getX(activePointerIndex) / getWidth());
                        if (!mEdgeGlowTop.isFinished()) {
                            mEdgeGlowTop.onRelease();
                        }
                    }
                    if (mEdgeGlowTop != null && (!mEdgeGlowTop.isFinished() || !mEdgeGlowBottom.isFinished())) {
                        postInvalidateOnAnimation();
                    }
                }
            }
            break;
        case MotionEvent.ACTION_UP:
            if (mIsBeingDragged) {
                final VelocityTracker velocityTracker = mVelocityTracker;
                velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
                int initialVelocity = (int) velocityTracker.getYVelocity(mActivePointerId);
                if ((Math.abs(initialVelocity) > mMinimumVelocity)) {
                    flingWithNestedDispatch(-initialVelocity);
                } else if (mScroller.springBack(mScrollX, mScrollY, 0, 0, 0, getScrollRange())) {
                    postInvalidateOnAnimation();
                }
                mActivePointerId = INVALID_POINTER;
                endDrag();
            }
            break;
        case MotionEvent.ACTION_CANCEL:
            if (mIsBeingDragged && getChildCount() > 0) {
                if (mScroller.springBack(mScrollX, mScrollY, 0, 0, 0, getScrollRange())) {
                    postInvalidateOnAnimation();
                }
                mActivePointerId = INVALID_POINTER;
                endDrag();
            }
            break;
        case MotionEvent.ACTION_POINTER_DOWN:
            {
                final int index = ev.getActionIndex();
                mLastMotionY = (int) ev.getY(index);
                mActivePointerId = ev.getPointerId(index);
                break;
            }
        case MotionEvent.ACTION_POINTER_UP:
            onSecondaryPointerUp(ev);
            mLastMotionY = (int) ev.getY(ev.findPointerIndex(mActivePointerId));
            break;
    }
    if (mVelocityTracker != null) {
        mVelocityTracker.addMovement(vtev);
    }
    vtev.recycle();
    return true;
}

Example 83 with MotionEvent

use of android.view.MotionEvent in project platform_frameworks_base by android.

the class AutoScrollHelper method cancelTargetTouch.

/**
     * Sends a {@link MotionEvent#ACTION_CANCEL} event to the target view,
     * canceling any ongoing touch events.
     */
private void cancelTargetTouch() {
    final long eventTime = SystemClock.uptimeMillis();
    final MotionEvent cancel = MotionEvent.obtain(eventTime, eventTime, MotionEvent.ACTION_CANCEL, 0, 0, 0);
    mTarget.onTouchEvent(cancel);
    cancel.recycle();
}

Example 84 with MotionEvent

use of android.view.MotionEvent in project platform_frameworks_base by android.

the class ForwardingListener method onTouch.

@Override
public boolean onTouch(View v, MotionEvent event) {
    final boolean wasForwarding = mForwarding;
    final boolean forwarding;
    if (wasForwarding) {
        forwarding = onTouchForwarded(event) || !onForwardingStopped();
    } else {
        forwarding = onTouchObserved(event) && onForwardingStarted();
        if (forwarding) {
            // Make sure we cancel any ongoing source event stream.
            final long now = SystemClock.uptimeMillis();
            final MotionEvent e = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0.0f, 0.0f, 0);
            mSrc.onTouchEvent(e);
            e.recycle();
        }
    }
    mForwarding = forwarding;
    return forwarding || wasForwarding;
}

Example 85 with MotionEvent

use of android.view.MotionEvent in project JamsMusicPlayer by psaravan.

the class WelcomeActivity method showBuildingLibraryProgress.

private void showBuildingLibraryProgress() {
    //Disables swiping events on the pager.
    welcomeViewPager.setCurrentItem(5);
    welcomeViewPager.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View arg0, MotionEvent arg1) {
            return true;
        }
    });
    //Fade out the ViewPager indicator.
    Animation fadeOutAnim = AnimationUtils.loadAnimation(mContext, R.anim.fade_out);
    fadeOutAnim.setDuration(600);
    fadeOutAnim.setAnimationListener(fadeOutListener);
    indicator.startAnimation(fadeOutAnim);
}