@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
final int action = event.getAction();
final float x = event.getX();
final float y = event.getY();
if (mAnimating) {
return false;
}
View leftHandle = mLeftSlider.tab;
leftHandle.getHitRect(mTmpRect);
boolean leftHit = mTmpRect.contains((int) x, (int) y);
View rightHandle = mRightSlider.tab;
rightHandle.getHitRect(mTmpRect);
boolean rightHit = mTmpRect.contains((int) x, (int) y);
if (!mTracking && !(leftHit || rightHit)) {
return false;
}
switch (action) {
case MotionEvent.ACTION_DOWN:
{
mTracking = true;
mTriggered = false;
vibrate(VIBRATE_SHORT);
if (leftHit) {
mCurrentSlider = mLeftSlider;
mOtherSlider = mRightSlider;
mThreshold = isHorizontal() ? THRESHOLD : 1.0f - THRESHOLD;
setGrabbedState(OnTriggerListener.LEFT_HANDLE);
} else {
mCurrentSlider = mRightSlider;
mOtherSlider = mLeftSlider;
mThreshold = isHorizontal() ? 1.0f - THRESHOLD : THRESHOLD;
setGrabbedState(OnTriggerListener.RIGHT_HANDLE);
}
mCurrentSlider.setState(Slider.STATE_PRESSED);
mCurrentSlider.showTarget();
mOtherSlider.hide();
break;
}
}
return true;
}
private static boolean isTouchEventHandled(final View view, final MotionEvent event) {
if (view instanceof RightPaneBackgroundView) return false;
if (!(view instanceof ViewGroup)) return true;
final MotionEvent ev = MotionEvent.obtain(event);
final float xf = ev.getX();
final float yf = ev.getY();
final float scrolledXFloat = xf + view.getScrollX();
final float scrolledYFloat = yf + view.getScrollY();
final Rect frame = new Rect();
final int scrolledXInt = (int) scrolledXFloat;
final int scrolledYInt = (int) scrolledYFloat;
final int count = ((ViewGroup) view).getChildCount();
for (int i = count - 1; i >= 0; i--) {
final View child = ((ViewGroup) view).getChildAt(i);
if (child.isShown() || child.getAnimation() != null) {
child.getHitRect(frame);
if (frame.contains(scrolledXInt, scrolledYInt)) {
// offset the event to the view's coordinate system
final float xc = scrolledXFloat - child.getLeft();
final float yc = scrolledYFloat - child.getTop();
ev.setLocation(xc, yc);
if (isTouchEventHandled(child, ev)) return true;
}
}
}
return false;
}
private void drawShadow(Canvas canvas, View child) {
final Rect childRect = mTmpRect;
child.getHitRect(childRect);
if ((mEdgeFlag & EDGE_LEFT) != 0) {
mShadowLeft.setBounds(
childRect.left - mShadowLeft.getIntrinsicWidth(),
childRect.top,
childRect.left,
childRect.bottom);
mShadowLeft.setAlpha((int) (mScrimOpacity * FULL_ALPHA));
mShadowLeft.draw(canvas);
}
if ((mEdgeFlag & EDGE_RIGHT) != 0) {
mShadowRight.setBounds(
childRect.right,
childRect.top,
childRect.right + mShadowRight.getIntrinsicWidth(),
childRect.bottom);
mShadowRight.setAlpha((int) (mScrimOpacity * FULL_ALPHA));
mShadowRight.draw(canvas);
}
if ((mEdgeFlag & EDGE_BOTTOM) != 0) {
mShadowBottom.setBounds(
childRect.left,
childRect.bottom,
childRect.right,
childRect.bottom + mShadowBottom.getIntrinsicHeight());
mShadowBottom.setAlpha((int) (mScrimOpacity * FULL_ALPHA));
mShadowBottom.draw(canvas);
}
}
/**
* Duplicate touch events to child views. We want to dispatch a down motion event and the move
* events to child views, but calling dispatchTouchEvent() causes StackOverflowError. Therefore we
* do it manually.
*
* @param ev motion event to be passed to children
* @param pendingEvents pending events like ACTION_DOWN. This will be passed to the children
* before ev
*/
private void duplicateTouchEventForChildren(MotionEvent ev, MotionEvent... pendingEvents) {
if (ev == null) {
return;
}
for (int i = getChildCount() - 1; 0 <= i; i--) {
View childView = getChildAt(i);
if (childView != null) {
Rect childRect = new Rect();
childView.getHitRect(childRect);
MotionEvent event = MotionEvent.obtainNoHistory(ev);
if (!childRect.contains((int) event.getX(), (int) event.getY())) {
continue;
}
float offsetX = -childView.getLeft();
float offsetY = -childView.getTop();
boolean consumed = false;
if (pendingEvents != null) {
for (MotionEvent pe : pendingEvents) {
if (pe != null) {
MotionEvent peAdjusted = MotionEvent.obtainNoHistory(pe);
peAdjusted.offsetLocation(offsetX, offsetY);
consumed |= childView.dispatchTouchEvent(peAdjusted);
}
}
}
event.offsetLocation(offsetX, offsetY);
consumed |= childView.dispatchTouchEvent(event);
if (consumed) {
break;
}
}
}
}
@Override
public boolean onInterceptTouchEvent(View view, MotionEvent event) {
// We need to account for scroll state for the touched view otherwise
// tapping on an "empty" part of the view will still be considered a
// valid touch event.
if (view.getScrollX() != 0 || view.getScrollY() != 0) {
Rect rect = new Rect();
view.getHitRect(rect);
rect.offset(-view.getScrollX(), -view.getScrollY());
int[] viewCoords = new int[2];
view.getLocationOnScreen(viewCoords);
int x = (int) event.getRawX() - viewCoords[0];
int y = (int) event.getRawY() - viewCoords[1];
if (!rect.contains(x, y)) return false;
}
// If the tab tray is showing, hide the tab tray and don't send the event to content.
if (event.getActionMasked() == MotionEvent.ACTION_DOWN && autoHideTabs()) {
mIsHidingTabs = true;
return true;
}
return false;
}
private boolean isInIgnoredView(MotionEvent ev) {
Rect rect = new Rect();
for (View v : mIgnoredViews) {
v.getHitRect(rect);
if (rect.contains((int) ev.getX(), (int) ev.getY())) return true;
}
return false;
}
/**
* 检查UI事件是否发生在视图view的区域内
*
* @param v
* @param ev
* @return
*/
public static boolean intersects(View v, MotionEvent ev) {
if (v == null) return false;
Rect rect = new Rect();
v.getHitRect(rect);
Rect r = new Rect();
r.left = r.right = (int) ev.getX();
r.bottom = r.top = (int) ev.getY();
return rect.intersects(r.left, r.top, r.right, r.bottom);
}
public boolean isTransformedTouchPointInView(float x, float y, View child) {
// TODO: confirm if this is the right approach
if (child == null) return false;
final Rect frame = new Rect();
child.getHitRect(frame);
return frame.contains((int) x, (int) y);
}
/*
* pointToPosition() doesn't consider invisible views, but we need to, so
* implement a slightly different version.
*/
private int myPointToPosition(final int x, final int y) {
Rect frame = this.mTempRect;
final int count = this.getChildCount();
for (int i = count - 1; i >= 0; i--) {
final View child = this.getChildAt(i);
child.getHitRect(frame);
if (frame.contains(x, y)) {
return this.getFirstVisiblePosition() + i;
}
}
return INVALID_POSITION;
}
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
if (((!mEnabled || !mInterceptTouch) && mMode == MODE_READY) || mAlwaysOpened) {
return super.dispatchTouchEvent(ev);
}
if (mMode != MODE_FINISHED) {
onTouchEvent(ev);
if (mMode != MODE_SLIDE) {
super.dispatchTouchEvent(ev);
} else {
MotionEvent cancelEvent = MotionEvent.obtain(ev);
cancelEvent.setAction(MotionEvent.ACTION_CANCEL);
super.dispatchTouchEvent(cancelEvent);
cancelEvent.recycle();
}
return true;
} else {
final int action = ev.getAction();
Rect rect = new Rect();
View menu = getChildAt(0);
menu.getHitRect(rect);
if (!rect.contains((int) ev.getX(), (int) ev.getY())) {
if (action == MotionEvent.ACTION_UP && mCloseOnRelease && !mDispatchWhenOpened) {
close();
mCloseOnRelease = false;
} else {
if (action == MotionEvent.ACTION_DOWN && !mDispatchWhenOpened) {
mCloseOnRelease = true;
}
onTouchEvent(ev);
}
if (mDispatchWhenOpened) {
super.dispatchTouchEvent(ev);
}
return true;
} else {
onTouchEvent(ev);
ev.offsetLocation(-menu.getLeft(), -menu.getTop());
menu.dispatchTouchEvent(ev);
return true;
}
}
}
private boolean isPinnedViewTouched(View view, float x, float y) {
view.getHitRect(mTouchRect);
// by taping top or bottom padding, the list performs on click on a border item.
// we don't add top padding here to keep behavior consistent.
mTouchRect.top += mTranslateY;
mTouchRect.bottom += mTranslateY + getPaddingTop();
mTouchRect.left += getPaddingLeft();
mTouchRect.right -= getPaddingRight();
return mTouchRect.contains((int) x, (int) y);
}
/**
* Detect if the given {@link MotionEvent} is outside the boundaries of this window, which usually
* means we should dismiss.
*/
protected void detectEventOutside(MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
// Only try detecting outside events on down-press
mDecor.getHitRect(mRect);
mRect.top = mRect.top + mShadowTouch;
mRect.bottom = mRect.bottom - mShadowTouch;
final int x = (int) event.getX();
final int y = (int) event.getY();
if (!mRect.contains(x, y)) {
event.setAction(MotionEvent.ACTION_OUTSIDE);
}
}
}
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
if (mTopCard == null) {
return false;
}
if (mGestureDetector.onTouchEvent(event)) {
return true;
}
final int pointerIndex;
final float x, y;
final float dx, dy;
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
mTopCard.getHitRect(childRect);
CardModel cardModel = (CardModel) getAdapter().getItem(getChildCount() - 1);
if (cardModel.getOnClickListener() != null) {
cardModel.getOnClickListener().OnClickListener();
}
pointerIndex = event.getActionIndex();
x = event.getX(pointerIndex);
y = event.getY(pointerIndex);
if (!childRect.contains((int) x, (int) y)) {
return false;
}
mLastTouchX = x;
mLastTouchY = y;
mActivePointerId = event.getPointerId(pointerIndex);
break;
case MotionEvent.ACTION_MOVE:
pointerIndex = event.findPointerIndex(mActivePointerId);
x = event.getX(pointerIndex);
y = event.getY(pointerIndex);
if (Math.abs(x - mLastTouchX) > mTouchSlop || Math.abs(y - mLastTouchY) > mTouchSlop) {
float[] points = new float[] {x - mTopCard.getLeft(), y - mTopCard.getTop()};
mTopCard.getMatrix().invert(mMatrix);
mMatrix.mapPoints(points);
mTopCard.setPivotX(points[0]);
mTopCard.setPivotY(points[1]);
return true;
}
}
return false;
}
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
if (mLocked) {
return false;
}
final int action = event.getAction();
float x = event.getX();
float y = event.getY();
final Rect frame = mFrame;
final View handle = mHandle;
handle.getHitRect(frame);
if (!mTracking && !frame.contains((int) x, (int) y)) {
return false;
}
if (action == MotionEvent.ACTION_DOWN) {
mTracking = true;
handle.setPressed(true);
// Must be called before prepareTracking()
prepareContent();
// Must be called after prepareContent()
if (mOnDrawerScrollListener != null) {
mOnDrawerScrollListener.onScrollStarted();
}
if (mVertical) {
final int top = mHandle.getTop();
mTouchDelta = (int) y - top;
prepareTracking(top);
} else {
final int left = mHandle.getLeft();
mTouchDelta = (int) x - left;
prepareTracking(left);
}
mVelocityTracker.addMovement(event);
}
return true;
}
private boolean isEventOverChild(MotionEvent ev, List<View> children) {
final int actionIndex = ev.getActionIndex();
final float x = ev.getX(actionIndex) + getScrollX();
final float y = ev.getY(actionIndex) + getScrollY();
for (View child : children) {
if (!canViewReceivePointerEvents(child)) {
continue;
}
child.getHitRect(sHitFrame);
// child can receive the motion event.
if (sHitFrame.contains((int) x, (int) y)) {
return true;
}
}
return false;
}
/**
* Maps a point to a position in the list.
*
* @param x X in local coordinate
* @param y Y in local coordinate
* @return The position of the item which contains the specified point, or {@link
* #INVALID_POSITION} if the point does not intersect an item.
*/
public int pointToPosition(int x, int y) {
Rect frame = mTouchFrame;
if (frame == null) {
mTouchFrame = new Rect();
frame = mTouchFrame;
}
final int count = getChildCount();
for (int i = count - 1; i >= 0; i--) {
View child = getChildAt(i);
if (child.getVisibility() == View.VISIBLE) {
child.getHitRect(frame);
if (frame.contains(x, y)) {
return mFirstPosition + i;
}
}
}
return INVALID_POSITION;
}
@Override
public void onDraw(Canvas c) {
super.onDraw(c);
if (!DEBUG) return;
Paint pt = new Paint();
pt.setStyle(Paint.Style.STROKE);
pt.setColor(0xFFCCCCCC);
pt.setStrokeWidth(2.0f);
final Rect check = new Rect();
final int N = getChildCount();
for (int i = 0; i < N; i++) {
View stone = getChildAt(i);
stone.getHitRect(check);
c.drawRect(check, pt);
}
}
private boolean findClickableViewInChild(View view, int x, int y) {
if (view instanceof ViewGroup) {
ViewGroup viewGroup = (ViewGroup) view;
for (int i = 0; i < viewGroup.getChildCount(); i++) {
View child = viewGroup.getChildAt(i);
final Rect rect = new Rect();
child.getHitRect(rect);
final boolean contains = rect.contains(x, y);
if (contains) {
return findClickableViewInChild(child, x - rect.left, y - rect.top);
}
}
} else if (view != childView) {
return (view.isEnabled()
&& (view.isClickable() || view.isLongClickable() || view.isFocusableInTouchMode()));
}
return view.isFocusableInTouchMode();
}
/** 滑动开始准备 */
private void actionDown(MotionEvent motionEvent) {
if (mPaused) {
return;
}
// 找到被点击的 view 和位置（包括 top left right bottom）
Rect rect = new Rect();
int childCount = mRecyclerView.getChildCount();
// location 指的是 RecyclerView 左上角以整个屏幕的左上角为参照物的坐标
int[] location = new int[2];
mRecyclerView.getLocationOnScreen(location);
// 此处的 x y 指的是触摸点以 location 为参照物时的坐标
int x = (int) motionEvent.getRawX() - location[0];
int y = (int) motionEvent.getRawY() - location[1];
View child;
for (int i = 0; i < childCount; i++) {
child = mRecyclerView.getChildAt(i);
child.getHitRect(rect);
if (rect.contains(x, y)) {
mDownView = child;
break;
}
}
// 找到相应的 view 并且该 view 不处于执行动画状态
if (mDownView != null
&& mAnimatingPosition != mRecyclerView.getChildAdapterPosition(mDownView)) {
mAlpha = mDownView.getAlpha();
mDownX = motionEvent.getRawX();
mDownY = motionEvent.getRawY();
mDownPosition = mRecyclerView.getChildAdapterPosition(mDownView);
if (mSwipeListener.canSwipe(mDownPosition)) {
// ？添加速度追踪器
mVelocityTracker = VelocityTracker.obtain();
mVelocityTracker.addMovement(motionEvent);
} else {
mDownView = null;
}
}
}
/*
* pointToPosition() doesn't consider invisible views, but we need to, so
* implement a slightly different version.
*/
private int myPointToPosition(int x, int y) {
if (y < 0) {
// when dragging off the top of the screen, calculate position
// by going back from a visible item
int pos = myPointToPosition(x, y + mItemHeightNormal);
if (pos > 0) {
return pos - 1;
}
}
Rect frame = mTempRect;
final int count = getChildCount();
for (int i = count - 1; i >= 0; i--) {
final View child = getChildAt(i);
child.getHitRect(frame);
if (frame.contains(x, y)) {
return getFirstVisiblePosition() + i;
}
}
return INVALID_POSITION;
}
private DropTarget findDropTarget(ViewGroup container, int x, int y, int[] dropCoordinates) {
final Rect r = mDragRect;
final int count = container.getChildCount();
final int scrolledX = x + container.getScrollX();
final int scrolledY = y + container.getScrollY();
final View ignoredDropTarget = mIgnoredDropTarget;
for (int i = count - 1; i >= 0; i--) {
final View child = container.getChildAt(i);
if (child.getVisibility() == VISIBLE && child != ignoredDropTarget) {
child.getHitRect(r);
if (r.contains(scrolledX, scrolledY)) {
DropTarget target = null;
if (child instanceof ViewGroup) {
x = scrolledX - child.getLeft();
y = scrolledY - child.getTop();
target = findDropTarget((ViewGroup) child, x, y, dropCoordinates);
}
if (target == null) {
if (child instanceof DropTarget) {
// Only consider this child if they will accept
DropTarget childTarget = (DropTarget) child;
if (childTarget.acceptDrop(mDragSource, x, y, 0, 0, mDragInfo)) {
dropCoordinates[0] = x;
dropCoordinates[1] = y;
return (DropTarget) child;
} else {
return null;
}
}
} else {
return target;
}
}
}
}
return null;
}
protected void applyTransformation(float f, Transformation transformation) {
super.applyTransformation(f, transformation);
if (mAnimType == 1) {
if (f < 1.0F) {
int i = Math.max((int) ((float) mFullHeight * f), mMinHeight);
mView.getLayoutParams().height = i;
} else {
mView.getLayoutParams().height = mFullHeight;
}
if (mShowExpandedArea) {
if (mRect == null) {
mRect = new Rect();
}
mView.getHitRect(mRect);
mView.requestRectangleOnScreen(mRect);
}
} else if (f < 1.0F) {
int j = Math.max(mFullHeight - (int) ((float) mFullHeight * f), mMinHeight);
mView.getLayoutParams().height = j;
} else {
mView.getLayoutParams().height = mMinHeight;
}
mView.requestLayout();
}
public boolean photoOffTable(final View photo, final int dx, final int dy) {
Rect hit = new Rect();
photo.getHitRect(hit);
hit.offset(dx, dy);
return (hit.bottom < 0f || hit.top > getHeight() || hit.right < 0f || hit.left > getWidth());
}
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
if (mViewWidth < 2) {
mViewWidth = mListView.getWidth();
}
switch (motionEvent.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
{
if (mPaused) {
return false;
}
if (mSwiping) {
return true;
}
// TODO: ensure this is a finger, and set a flag
// Find the child view that was touched (perform a hit test)
Rect rect = new Rect();
int childCount = mListView.getChildCount();
int headerCount = mListView.getHeaderViewsCount();
int footerCount = mListView.getFooterViewsCount();
int[] listViewCoords = new int[2];
mListView.getLocationOnScreen(listViewCoords);
int x = (int) motionEvent.getRawX() - listViewCoords[0];
int y = (int) motionEvent.getRawY() - listViewCoords[1];
View child = null;
for (int i = headerCount; i < (childCount - footerCount); i++) {
child = mListView.getChildAt(i);
child.getHitRect(rect);
if (rect.contains(x, y)) {
mDownView = child;
break;
}
}
if (mDownView != null) {
mDownX = motionEvent.getRawX();
mDownY = motionEvent.getRawY();
mDownPosition = mListView.getPositionForView(mDownView);
if (mDownPosition != ListView.INVALID_POSITION
&& mDownPosition < mListView.getAdapter().getCount()) {
if (mListView.getAdapter().getItem(mDownPosition) instanceof Card) {
if (mCallbacks.canDismiss(
mDownPosition, (Card) mListView.getAdapter().getItem(mDownPosition))) {
mVelocityTracker = VelocityTracker.obtain();
mVelocityTracker.addMovement(motionEvent);
} else {
mDownView = null;
}
} else {
mDownView = null;
}
} else {
mDownView = null;
}
}
view.onTouchEvent(motionEvent);
return true;
// return false;
}
case MotionEvent.ACTION_UP:
{
if (mVelocityTracker == null) {
break;
}
float deltaX = motionEvent.getRawX() - mDownX;
mVelocityTracker.addMovement(motionEvent);
mVelocityTracker.computeCurrentVelocity(1000);
float velocityX = mVelocityTracker.getXVelocity();
float absVelocityX = Math.abs(velocityX);
float absVelocityY = Math.abs(mVelocityTracker.getYVelocity());
boolean dismiss = false;
boolean dismissRight = false;
if (Math.abs(deltaX) > mViewWidth / swipeDistanceDivisor && mSwiping) {
dismiss = true;
dismissRight = deltaX > 0;
} else if (mMinFlingVelocity <= absVelocityX
&& absVelocityX <= mMaxFlingVelocity
&& absVelocityY < absVelocityX
&& mSwiping) {
// dismiss only if flinging in the same direction as dragging
dismiss = (velocityX < 0) == (deltaX < 0);
dismissRight = mVelocityTracker.getXVelocity() > 0;
}
if (dismiss && mDownPosition != ListView.INVALID_POSITION) {
// dismiss
dismiss(mDownView, mDownPosition - mListView.getHeaderViewsCount(), dismissRight);
} else {
// cancel
mDownView
.animate()
.translationX(0)
.alpha(1)
.setDuration(mAnimationTime)
.setListener(null);
}
mVelocityTracker.recycle();
mVelocityTracker = null;
mDownX = 0;
mDownY = 0;
mDownView = null;
mDownPosition = ListView.INVALID_POSITION;
if (mSwiping) {
// To prevent onClick event with a fast swipe
mSwiping = false;
return true;
}
mSwiping = false;
break;
}
case MotionEvent.ACTION_CANCEL:
{
if (mVelocityTracker == null) {
break;
}
if (mDownView != null) {
// cancel
mDownView
.animate()
.translationX(0)
.alpha(1)
.setDuration(mAnimationTime)
.setListener(null);
}
mVelocityTracker.recycle();
mVelocityTracker = null;
mDownX = 0;
mDownY = 0;
mDownView = null;
mDownPosition = ListView.INVALID_POSITION;
mSwiping = false;
break;
}
case MotionEvent.ACTION_MOVE:
{
if (mVelocityTracker == null || mPaused) {
break;
}
mVelocityTracker.addMovement(motionEvent);
float deltaX = motionEvent.getRawX() - mDownX;
float deltaY = motionEvent.getRawY() - mDownY;
boolean movementAllowed = isSwipeMovementAllowed(deltaX);
if (Math.abs(deltaX) > mSlop
&& Math.abs(deltaY) < Math.abs(deltaX) / 2
&& movementAllowed) {
mSwiping = true;
mSwipingSlop = (deltaX > 0 ? mSlop : -mSlop);
mListView.requestDisallowInterceptTouchEvent(true);
// Cancel ListView's touch (un-highlighting the item)
MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
cancelEvent.setAction(
MotionEvent.ACTION_CANCEL
| (motionEvent.getActionIndex() << MotionEvent.ACTION_POINTER_INDEX_SHIFT));
mListView.onTouchEvent(cancelEvent);
view.onTouchEvent(cancelEvent);
cancelEvent.recycle();
}
if (mSwiping) {
mDownView.setTranslationX(deltaX - mSwipingSlop);
mDownView.setAlpha(Math.max(0f, Math.min(1f, 1f - 2f * Math.abs(deltaX) / mViewWidth)));
return true;
}
break;
}
}
return false;
}
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
if (mViewWidth < 2) {
mViewWidth = mListView.getWidth();
}
switch (motionEvent.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
{
if (mPaused) {
return false;
}
// TODO: ensure this is a finger, and set a flag
// Find the child view that was touched (perform a hit test)
Rect rect = new Rect();
int childCount = mListView.getChildCount();
int[] listViewCoords = new int[2];
mListView.getLocationOnScreen(listViewCoords);
int x = (int) motionEvent.getRawX() - listViewCoords[0];
int y = (int) motionEvent.getRawY() - listViewCoords[1];
View child;
for (int i = 0; i < childCount; i++) {
child = mListView.getChildAt(i);
child.getHitRect(rect);
if (rect.contains(x, y)) {
mDownView = child;
break;
}
}
if (mDownView != null) {
mDownX = motionEvent.getRawX();
mDownPosition = mListView.getPositionForView(mDownView);
if (((ListItem) mListView.getAdapter().getItem(mDownPosition)).getId() < 0) {
return true;
}
mVelocityTracker = VelocityTracker.obtain();
mVelocityTracker.addMovement(motionEvent);
}
view.onTouchEvent(motionEvent);
return true;
}
case MotionEvent.ACTION_UP:
{
if (mVelocityTracker == null) {
break;
}
float deltaX = motionEvent.getRawX() - mDownX;
mVelocityTracker.addMovement(motionEvent);
mVelocityTracker.computeCurrentVelocity(1000);
float velocityX = Math.abs(mVelocityTracker.getXVelocity());
float velocityY = Math.abs(mVelocityTracker.getYVelocity());
boolean dismiss = false;
boolean dismissRight = false;
if (Math.abs(deltaX) > mViewWidth / 2) {
dismiss = true;
dismissRight = deltaX > 0;
} else if (mMinFlingVelocity <= velocityX
&& velocityX <= mMaxFlingVelocity
&& velocityY < velocityX) {
dismiss = true;
dismissRight = mVelocityTracker.getXVelocity() > 0;
}
if (dismiss) {
// dismiss
final View downView = mDownView; // mDownView gets null'd before animation ends
final int downPosition = mDownPosition;
++mDismissAnimationRefCount;
animate(mDownView)
.translationX(dismissRight ? mViewWidth : -mViewWidth)
.alpha(0)
.setDuration(mAnimationTime)
.setListener(
new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
performDismiss(downView, downPosition);
}
});
} else {
// cancel
animate(mDownView)
.translationX(0)
.alpha(1)
.setDuration(mAnimationTime)
.setListener(null);
}
mVelocityTracker = null;
mDownX = 0;
mDownView = null;
mDownPosition = ListView.INVALID_POSITION;
mSwiping = false;
break;
}
case MotionEvent.ACTION_MOVE:
{
if (mVelocityTracker == null || mPaused) {
break;
}
mVelocityTracker.addMovement(motionEvent);
float deltaX = motionEvent.getRawX() - mDownX;
if (Math.abs(deltaX) > mSlop) {
mSwiping = true;
mListView.requestDisallowInterceptTouchEvent(true);
// Cancel ListView's touch (un-highlighting the item)
MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
cancelEvent.setAction(
MotionEvent.ACTION_CANCEL
| (motionEvent.getActionIndex() << MotionEvent.ACTION_POINTER_INDEX_SHIFT));
mListView.onTouchEvent(cancelEvent);
}
if (mSwiping) {
setTranslationX(mDownView, deltaX);
setAlpha(
mDownView, Math.max(0f, Math.min(1f, 1f - 2f * Math.abs(deltaX) / mViewWidth)));
return true;
}
break;
}
}
return false;
}
private boolean handleTouchEvent(MotionEvent motionEvent) {
if (mViewWidth < 2) {
mViewWidth = mRecyclerView.getWidth();
}
switch (motionEvent.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
{
if (mPaused) {
break;
}
// Find the child view that was touched (perform a hit test)
Rect rect = new Rect();
int childCount = mRecyclerView.getChildCount();
int[] listViewCoords = new int[2];
mRecyclerView.getLocationOnScreen(listViewCoords);
int x = (int) motionEvent.getRawX() - listViewCoords[0];
int y = (int) motionEvent.getRawY() - listViewCoords[1];
View child;
for (int i = 0; i < childCount; i++) {
child = mRecyclerView.getChildAt(i);
child.getHitRect(rect);
if (rect.contains(x, y)) {
mDownView = child;
break;
}
}
if (mDownView != null) {
mDownX = motionEvent.getRawX();
mDownY = motionEvent.getRawY();
mDownPosition = mRecyclerView.getChildAdapterPosition(mDownView);
mVelocityTracker = VelocityTracker.obtain();
mVelocityTracker.addMovement(motionEvent);
mFgView = mDownView.findViewById(mFgID);
}
break;
}
case MotionEvent.ACTION_CANCEL:
{
if (mVelocityTracker == null) {
break;
}
if (mDownView != null && mSwiping) {
// cancel
mFgView.animate().translationX(0).setDuration(ANIMATION_FAST).setListener(null);
}
mVelocityTracker.recycle();
mVelocityTracker = null;
mDownX = 0;
mDownY = 0;
mDownView = null;
mDownPosition = ListView.INVALID_POSITION;
mSwiping = false;
mBgView = null;
break;
}
case MotionEvent.ACTION_UP:
{
if (mVelocityTracker == null) {
break;
}
mFinalDelta = motionEvent.getRawX() - mDownX;
mVelocityTracker.addMovement(motionEvent);
mVelocityTracker.computeCurrentVelocity(1000);
float velocityX = mVelocityTracker.getXVelocity();
float absVelocityX = Math.abs(velocityX);
float absVelocityY = Math.abs(mVelocityTracker.getYVelocity());
boolean dismiss = false;
boolean dismissRight = false;
if (Math.abs(mFinalDelta) > mViewWidth / 2 && mSwiping) {
dismiss = true;
dismissRight = mFinalDelta > 0;
} else if (mMinFlingVelocity <= absVelocityX
&& absVelocityX <= mMaxFlingVelocity
&& absVelocityY < absVelocityX
&& mSwiping) {
// dismiss only if flinging in the same direction as dragging
dismiss = (velocityX < 0) == (mFinalDelta < 0);
dismissRight = mVelocityTracker.getXVelocity() > 0;
}
if (dismiss
&& mDownPosition != ListView.INVALID_POSITION
&& mSwipeListener.canSwipe(mDownPosition)) {
// dismiss
++mDismissAnimationRefCount;
mBgView.animate().alpha(1).setDuration(ANIMATION_FAST);
mFgView
.animate()
.translationX(dismissRight ? mViewWidth : -mViewWidth)
.setDuration(ANIMATION_FAST)
.setListener(
new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
mFgView.animate().translationX(0); // Esto hace que regrese a su posision :)
}
});
} else {
// cancel
mFgView.animate().translationX(0).setDuration(ANIMATION_FAST).setListener(null);
}
mVelocityTracker.recycle();
mVelocityTracker = null;
mDownX = 0;
mDownY = 0;
mDownView = null;
mDownPosition = ListView.INVALID_POSITION;
mSwiping = false;
mBgView = null;
break;
}
case MotionEvent.ACTION_MOVE:
{
if (mVelocityTracker == null || mPaused) {
break;
}
mVelocityTracker.addMovement(motionEvent);
float deltaX = motionEvent.getRawX() - mDownX;
float deltaY = motionEvent.getRawY() - mDownY;
if (!mSwiping && Math.abs(deltaX) > mSlop && Math.abs(deltaY) < Math.abs(deltaX) / 2) {
mSwiping = true;
mSwipingSlop = (deltaX > 0 ? mSlop : -mSlop);
}
if (mSwiping) {
if (mBgView == null) {
mBgView = mDownView.findViewById(mBgID);
mBgView.setVisibility(View.VISIBLE);
listener.holaView((deltaX - mSwipingSlop) > 0, mBgView);
}
mFgView.setTranslationX(deltaX - mSwipingSlop);
return true;
}
break;
}
}
return false;
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
final int action = ev.getAction();
final CellInfo cellInfo = mCellInfo;
if (action == MotionEvent.ACTION_DOWN) {
final Rect frame = mRect;
final int x = (int) ev.getX() + mScrollX;
final int y = (int) ev.getY() + mScrollY;
final int count = getChildCount();
boolean found = false;
for (int i = count - 1; i >= 0; i--) {
final View child = getChildAt(i);
if ((child.getVisibility()) == VISIBLE || child.getAnimation() != null) {
child.getHitRect(frame);
if (frame.contains(x, y)) {
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
cellInfo.cell = child;
cellInfo.cellX = lp.cellX;
cellInfo.cellY = lp.cellY;
cellInfo.spanX = lp.cellHSpan;
cellInfo.spanY = lp.cellVSpan;
cellInfo.valid = true;
found = true;
mDirtyTag = false;
break;
}
}
}
mLastDownOnOccupiedCell = found;
if (!found) {
int cellXY[] = mCellXY;
pointToCellExact(x, y, cellXY);
final boolean portrait = mPortrait;
final int xCount = portrait ? mShortAxisCells : mLongAxisCells;
final int yCount = portrait ? mLongAxisCells : mShortAxisCells;
final boolean[][] occupied = mOccupied;
findOccupiedCells(xCount, yCount, occupied, null);
cellInfo.cell = null;
cellInfo.cellX = cellXY[0];
cellInfo.cellY = cellXY[1];
cellInfo.spanX = 1;
cellInfo.spanY = 1;
cellInfo.valid =
cellXY[0] >= 0
&& cellXY[1] >= 0
&& cellXY[0] < xCount
&& cellXY[1] < yCount
&& !occupied[cellXY[0]][cellXY[1]];
// Instead of finding the interesting vacant cells here, wait until a
// caller invokes getTag() to retrieve the result. Finding the vacant
// cells is a bit expensive and can generate many new objects, it's
// therefore better to defer it until we know we actually need it.
mDirtyTag = true;
}
setTag(cellInfo);
} else if (action == MotionEvent.ACTION_UP) {
cellInfo.cell = null;
cellInfo.cellX = -1;
cellInfo.cellY = -1;
cellInfo.spanX = 0;
cellInfo.spanY = 0;
cellInfo.valid = false;
mDirtyTag = false;
setTag(cellInfo);
}
return false;
}
private void moveHandle(int position) {
final View handle = mHandle;
if (mVertical) {
if (position == EXPANDED_FULL_OPEN) {
handle.offsetTopAndBottom(mTopOffset - handle.getTop());
invalidate();
} else if (position == COLLAPSED_FULL_CLOSED) {
handle.offsetTopAndBottom(mBottomOffset + mBottom - mTop - mHandleHeight - handle.getTop());
invalidate();
} else {
final int top = handle.getTop();
int deltaY = position - top;
if (position < mTopOffset) {
deltaY = mTopOffset - top;
} else if (deltaY > mBottomOffset + mBottom - mTop - mHandleHeight - top) {
deltaY = mBottomOffset + mBottom - mTop - mHandleHeight - top;
}
handle.offsetTopAndBottom(deltaY);
final Rect frame = mFrame;
final Rect region = mInvalidate;
handle.getHitRect(frame);
region.set(frame);
region.union(frame.left, frame.top - deltaY, frame.right, frame.bottom - deltaY);
region.union(
0, frame.bottom - deltaY, getWidth(), frame.bottom - deltaY + mContent.getHeight());
invalidate(region);
}
} else {
if (position == EXPANDED_FULL_OPEN) {
handle.offsetLeftAndRight(mTopOffset - handle.getLeft());
invalidate();
} else if (position == COLLAPSED_FULL_CLOSED) {
handle.offsetLeftAndRight(mBottomOffset + mRight - mLeft - mHandleWidth - handle.getLeft());
invalidate();
} else {
final int left = handle.getLeft();
int deltaX = position - left;
if (position < mTopOffset) {
deltaX = mTopOffset - left;
} else if (deltaX > mBottomOffset + mRight - mLeft - mHandleWidth - left) {
deltaX = mBottomOffset + mRight - mLeft - mHandleWidth - left;
}
handle.offsetLeftAndRight(deltaX);
final Rect frame = mFrame;
final Rect region = mInvalidate;
handle.getHitRect(frame);
region.set(frame);
region.union(frame.left - deltaX, frame.top, frame.right - deltaX, frame.bottom);
region.union(
frame.right - deltaX, 0, frame.right - deltaX + mContent.getWidth(), getHeight());
invalidate(region);
}
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (mTopCard == null) {
return false;
}
if (mGestureDetector.onTouchEvent(event)) {
return true;
}
// Log.d("Touch Event", MotionEvent.actionToString(event.getActionMasked()) + " ");
final int pointerIndex;
final float x, y;
final float dx, dy;
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
mTopCard.getHitRect(childRect);
pointerIndex = event.getActionIndex();
x = event.getX(pointerIndex);
y = event.getY(pointerIndex);
if (!childRect.contains((int) x, (int) y)) {
return false;
}
mLastTouchX = x;
mLastTouchY = y;
mActivePointerId = event.getPointerId(pointerIndex);
float[] points = new float[] {x - mTopCard.getLeft(), y - mTopCard.getTop()};
mTopCard.getMatrix().invert(mMatrix);
mMatrix.mapPoints(points);
mTopCard.setPivotX(points[0]);
mTopCard.setPivotY(points[1]);
break;
case MotionEvent.ACTION_MOVE:
pointerIndex = event.findPointerIndex(mActivePointerId);
x = event.getX(pointerIndex);
y = event.getY(pointerIndex);
dx = x - mLastTouchX;
dy = y - mLastTouchY;
if (Math.abs(dx) > mTouchSlop || Math.abs(dy) > mTouchSlop) {
mDragging = true;
}
if (!mDragging) {
return true;
}
mTopCard.setTranslationX(mTopCard.getTranslationX() + dx);
mTopCard.setTranslationY(mTopCard.getTranslationY() + dy);
mTopCard.setRotation(40 * mTopCard.getTranslationX() / (getWidth() / 2.f));
mLastTouchX = x;
mLastTouchY = y;
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
if (!mDragging) {
return true;
}
mDragging = false;
mActivePointerId = INVALID_POINTER_ID;
ValueAnimator animator =
ObjectAnimator.ofPropertyValuesHolder(
mTopCard,
PropertyValuesHolder.ofFloat("translationX", 0),
PropertyValuesHolder.ofFloat("translationY", 0),
PropertyValuesHolder.ofFloat(
"rotation",
(float)
Math.toDegrees(
mRandom.nextGaussian() * DISORDERED_MAX_ROTATION_RADIANS)),
PropertyValuesHolder.ofFloat("pivotX", mTopCard.getWidth() / 2.f),
PropertyValuesHolder.ofFloat("pivotY", mTopCard.getHeight() / 2.f))
.setDuration(250);
animator.setInterpolator(new AccelerateInterpolator());
animator.start();
break;
case MotionEvent.ACTION_POINTER_UP:
pointerIndex = event.getActionIndex();
final int pointerId = event.getPointerId(pointerIndex);
if (pointerId == mActivePointerId) {
final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
mLastTouchX = event.getX(newPointerIndex);
mLastTouchY = event.getY(newPointerIndex);
mActivePointerId = event.getPointerId(newPointerIndex);
}
break;
}
return true;
}
/** @see View.OnTouchListener#onTouch(android.view.View, android.view.MotionEvent) */
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
if (!isSwipeEnabled()) {
return false;
}
if (viewWidth < 2) {
viewWidth = swipeListView.getWidth();
}
switch (MotionEventCompat.getActionMasked(motionEvent)) {
case MotionEvent.ACTION_DOWN:
{
if (paused && downPosition != ListView.INVALID_POSITION) {
return false;
}
swipeCurrentAction = SwipeListView.SWIPE_ACTION_NONE;
int childCount = swipeListView.getChildCount();
int[] listViewCoords = new int[2];
swipeListView.getLocationOnScreen(listViewCoords);
int x = (int) motionEvent.getRawX() - listViewCoords[0];
int y = (int) motionEvent.getRawY() - listViewCoords[1];
View child;
for (int i = 0; i < childCount; i++) {
child = swipeListView.getChildAt(i);
child.getHitRect(rect);
int childPosition = swipeListView.getPositionForView(child);
// dont allow swiping if this is on the header or footer or IGNORE_ITEM_VIEW_TYPE or
// enabled is false on the adapter
boolean allowSwipe =
swipeListView.getAdapter().isEnabled(childPosition)
&& swipeListView.getAdapter().getItemViewType(childPosition) >= 0;
if (allowSwipe && rect.contains(x, y)) {
setParentView(child);
setFrontView(child.findViewById(swipeFrontView));
downX = motionEvent.getRawX();
downPosition = childPosition;
frontView.setClickable(!opened.get(downPosition));
frontView.setLongClickable(!opened.get(downPosition));
velocityTracker = VelocityTracker.obtain();
velocityTracker.addMovement(motionEvent);
if (swipeBackView > 0) {
setBackView(child.findViewById(swipeBackView));
}
break;
}
}
view.onTouchEvent(motionEvent);
return true;
}
case MotionEvent.ACTION_UP:
{
if (velocityTracker == null || !swiping || downPosition == ListView.INVALID_POSITION) {
break;
}
float deltaX = motionEvent.getRawX() - downX;
velocityTracker.addMovement(motionEvent);
velocityTracker.computeCurrentVelocity(1000);
float velocityX = Math.abs(velocityTracker.getXVelocity());
if (!opened.get(downPosition)) {
if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && velocityTracker.getXVelocity() > 0) {
velocityX = 0;
}
if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && velocityTracker.getXVelocity() < 0) {
velocityX = 0;
}
}
float velocityY = Math.abs(velocityTracker.getYVelocity());
boolean swap = false;
boolean swapRight = false;
if (minFlingVelocity <= velocityX
&& velocityX <= maxFlingVelocity
&& velocityY * 2 < velocityX) {
swapRight = velocityTracker.getXVelocity() > 0;
Log.d("SwipeListView", "swapRight: " + swapRight + " - swipingRight: " + swipingRight);
if (swapRight != swipingRight && swipeActionLeft != swipeActionRight) {
swap = false;
} else if (opened.get(downPosition) && openedRight.get(downPosition) && swapRight) {
swap = false;
} else if (opened.get(downPosition) && !openedRight.get(downPosition) && !swapRight) {
swap = false;
} else {
swap = true;
}
} else if (Math.abs(deltaX) > viewWidth / 2) {
swap = true;
swapRight = deltaX > 0;
}
generateAnimate(frontView, swap, swapRight, downPosition);
if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
swapChoiceState(downPosition);
}
velocityTracker.recycle();
velocityTracker = null;
downX = 0;
// change clickable front view
// if (swap) {
// frontView.setClickable(opened.get(downPosition));
// frontView.setLongClickable(opened.get(downPosition));
// }
swiping = false;
break;
}
case MotionEvent.ACTION_MOVE:
{
if (velocityTracker == null || paused || downPosition == ListView.INVALID_POSITION) {
break;
}
velocityTracker.addMovement(motionEvent);
velocityTracker.computeCurrentVelocity(1000);
float velocityX = Math.abs(velocityTracker.getXVelocity());
float velocityY = Math.abs(velocityTracker.getYVelocity());
float deltaX = motionEvent.getRawX() - downX;
float deltaMode = Math.abs(deltaX);
int swipeMode = this.swipeMode;
int changeSwipeMode = swipeListView.changeSwipeMode(downPosition);
if (changeSwipeMode >= 0) {
swipeMode = changeSwipeMode;
}
if (swipeMode == SwipeListView.SWIPE_MODE_NONE) {
deltaMode = 0;
} else if (swipeMode != SwipeListView.SWIPE_MODE_BOTH) {
if (opened.get(downPosition)) {
if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX < 0) {
deltaMode = 0;
} else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX > 0) {
deltaMode = 0;
}
} else {
if (swipeMode == SwipeListView.SWIPE_MODE_LEFT && deltaX > 0) {
deltaMode = 0;
} else if (swipeMode == SwipeListView.SWIPE_MODE_RIGHT && deltaX < 0) {
deltaMode = 0;
}
}
}
if (deltaMode > slop
&& swipeCurrentAction == SwipeListView.SWIPE_ACTION_NONE
&& velocityY < velocityX) {
swiping = true;
swipingRight = (deltaX > 0);
Log.d("SwipeListView", "deltaX: " + deltaX + " - swipingRight: " + swipingRight);
if (opened.get(downPosition)) {
swipeListView.onStartClose(downPosition, swipingRight);
swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
} else {
if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_DISMISS) {
swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
} else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_DISMISS) {
swipeCurrentAction = SwipeListView.SWIPE_ACTION_DISMISS;
} else if (swipingRight && swipeActionRight == SwipeListView.SWIPE_ACTION_CHOICE) {
swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
} else if (!swipingRight && swipeActionLeft == SwipeListView.SWIPE_ACTION_CHOICE) {
swipeCurrentAction = SwipeListView.SWIPE_ACTION_CHOICE;
} else {
swipeCurrentAction = SwipeListView.SWIPE_ACTION_REVEAL;
}
swipeListView.onStartOpen(downPosition, swipeCurrentAction, swipingRight);
}
swipeListView.requestDisallowInterceptTouchEvent(true);
MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
cancelEvent.setAction(
MotionEvent.ACTION_CANCEL
| (MotionEventCompat.getActionIndex(motionEvent)
<< MotionEventCompat.ACTION_POINTER_INDEX_SHIFT));
swipeListView.onTouchEvent(cancelEvent);
if (swipeCurrentAction == SwipeListView.SWIPE_ACTION_CHOICE) {
backView.setVisibility(View.GONE);
}
}
if (swiping && downPosition != ListView.INVALID_POSITION) {
if (opened.get(downPosition)) {
deltaX +=
openedRight.get(downPosition) ? viewWidth - rightOffset : -viewWidth + leftOffset;
}
move(deltaX);
return true;
}
break;
}
}
return false;
}