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

Example 41 with ViewParent

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

the class ExploreByTouchHelper method intersectVisibleToUser.

/**
     * Computes whether the specified {@link Rect} intersects with the visible
     * portion of its parent {@link View}. Modifies {@code localRect} to contain
     * only the visible portion.
     *
     * @param localRect A rectangle in local (parent) coordinates.
     * @return Whether the specified {@link Rect} is visible on the screen.
     */
private boolean intersectVisibleToUser(Rect localRect) {
    // Missing or empty bounds mean this view is not visible.
    if ((localRect == null) || localRect.isEmpty()) {
        return false;
    }
    // Attached to invisible window means this view is not visible.
    if (mView.getWindowVisibility() != View.VISIBLE) {
        return false;
    }
    // An invisible predecessor means that this view is not visible.
    ViewParent viewParent = mView.getParent();
    while (viewParent instanceof View) {
        final View view = (View) viewParent;
        if ((view.getAlpha() <= 0) || (view.getVisibility() != View.VISIBLE)) {
            return false;
        }
        viewParent = view.getParent();
    }
    // A null parent implies the view is not visible.
    if (viewParent == null) {
        return false;
    }
    // If no portion of the parent is visible, this view is not visible.
    if (mTempVisibleRect == null) {
        mTempVisibleRect = new Rect();
    }
    final Rect tempVisibleRect = mTempVisibleRect;
    if (!mView.getLocalVisibleRect(tempVisibleRect)) {
        return false;
    }
    // Check if the view intersects the visible portion of the parent.
    return localRect.intersect(tempVisibleRect);
}

Example 42 with ViewParent

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

the class ListPopupWindow method removePromptView.

private void removePromptView() {
    if (mPromptView != null) {
        final ViewParent parent = mPromptView.getParent();
        if (parent instanceof ViewGroup) {
            final ViewGroup group = (ViewGroup) parent;
            group.removeView(mPromptView);
        }
    }
}

Example 43 with ViewParent

use of android.view.ViewParent in project vlayout by alibaba.

the class VirtualLayoutManager method onLayoutChildren.

@Override
public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
        Trace.beginSection(TRACE_LAYOUT);
    }
    if (mNoScrolling && state.didStructureChange()) {
        mSpaceMeasured = false;
        mSpaceMeasuring = true;
    }
    runPreLayout(recycler, state);
    try {
        super.onLayoutChildren(recycler, state);
    } catch (Exception e) {
        e.printStackTrace();
        throw e;
    } finally {
        // MaX_VALUE means invalidate scrolling offset - no scroll
        // hack to indicate its an initial layout
        runPostLayout(recycler, state, Integer.MAX_VALUE);
    }
    if ((mNestedScrolling || mNoScrolling) && mSpaceMeasuring) {
        // measure required, so do measure
        mSpaceMeasured = true;
        // get last child
        int childCount = getChildCount();
        View lastChild = getChildAt(childCount - 1);
        if (lastChild != null) {
            RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) lastChild.getLayoutParams();
            // found the end of last child view
            mMeasuredFullSpace = getDecoratedBottom(lastChild) + params.bottomMargin + computeAlignOffset(lastChild, true, false);
            if (mRecyclerView != null && mNestedScrolling) {
                ViewParent parent = mRecyclerView.getParent();
                if (parent instanceof View) {
                    // make sure the fullspace be the min value of measured space and parent's height
                    mMeasuredFullSpace = Math.min(mMeasuredFullSpace, ((View) parent).getMeasuredHeight());
                }
            }
        } else {
            mSpaceMeasuring = false;
        }
        mSpaceMeasuring = false;
        if (mRecyclerView != null && getItemCount() > 0) {
            // relayout
            mRecyclerView.post(new Runnable() {

                @Override
                public void run() {
                    // post relayout
                    if (mRecyclerView != null)
                        mRecyclerView.requestLayout();
                }
            });
        }
    }
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
        Trace.endSection();
    }
}

Example 44 with ViewParent

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

the class VelocityViewPager method arrowScroll.

public boolean arrowScroll(int direction) {
    View currentFocused = findFocus();
    if (currentFocused == this) {
        currentFocused = null;
    } else if (currentFocused != null) {
        boolean isChild = false;
        for (ViewParent parent = currentFocused.getParent(); parent instanceof ViewGroup; parent = parent.getParent()) {
            if (parent == this) {
                isChild = true;
                break;
            }
        }
        if (!isChild) {
            // This would cause the focus search down below to fail in fun ways.
            final StringBuilder sb = new StringBuilder();
            sb.append(currentFocused.getClass().getSimpleName());
            for (ViewParent parent = currentFocused.getParent(); parent instanceof ViewGroup; parent = parent.getParent()) {
                sb.append(" => ").append(parent.getClass().getSimpleName());
            }
            Log.e(TAG, "arrowScroll tried to find focus based on non-child " + "current focused view " + sb.toString());
            currentFocused = null;
        }
    }
    boolean handled = false;
    View nextFocused = FocusFinder.getInstance().findNextFocus(this, currentFocused, direction);
    if (nextFocused != null && nextFocused != currentFocused) {
        if (direction == View.FOCUS_LEFT) {
            // If there is nothing to the left, or this is causing us to
            // jump to the right, then what we really want to do is page left.
            final int nextLeft = getChildRectInPagerCoordinates(mTempRect, nextFocused).left;
            final int currLeft = getChildRectInPagerCoordinates(mTempRect, currentFocused).left;
            if (currentFocused != null && nextLeft >= currLeft) {
                handled = pageLeft();
            } else {
                handled = nextFocused.requestFocus();
            }
        } else if (direction == View.FOCUS_RIGHT) {
            // If there is nothing to the right, or this is causing us to
            // jump to the left, then what we really want to do is page right.
            final int nextLeft = getChildRectInPagerCoordinates(mTempRect, nextFocused).left;
            final int currLeft = getChildRectInPagerCoordinates(mTempRect, currentFocused).left;
            if (currentFocused != null && nextLeft <= currLeft) {
                handled = pageRight();
            } else {
                handled = nextFocused.requestFocus();
            }
        }
    } else if (direction == FOCUS_LEFT || direction == FOCUS_BACKWARD) {
        // Trying to move left and nothing there; try to page.
        handled = pageLeft();
    } else if (direction == FOCUS_RIGHT || direction == FOCUS_FORWARD) {
        // Trying to move right and nothing there; try to page.
        handled = pageRight();
    }
    if (handled) {
        playSoundEffect(SoundEffectConstants.getContantForFocusDirection(direction));
    }
    return handled;
}

Example 45 with ViewParent

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

the class VelocityViewPager method onTouchEvent.

@Override
public boolean onTouchEvent(MotionEvent ev) {
    if (mFakeDragging) {
        // (It is likely that the user is multi-touching the screen.)
        return true;
    }
    if (ev.getAction() == MotionEvent.ACTION_DOWN && ev.getEdgeFlags() != 0) {
        // descendants.
        return false;
    }
    if (mAdapter == null || mAdapter.getCount() == 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();
                populate();
                // Remember where the motion event started
                mLastMotionX = mInitialMotionX = ev.getX();
                mLastMotionY = mInitialMotionY = ev.getY();
                mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
                break;
            }
        case MotionEvent.ACTION_MOVE:
            if (!mIsBeingDragged) {
                final int pointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
                final float x = MotionEventCompat.getX(ev, pointerIndex);
                final float xDiff = Math.abs(x - mLastMotionX);
                final float y = MotionEventCompat.getY(ev, pointerIndex);
                final float yDiff = Math.abs(y - mLastMotionY);
                if (DEBUG)
                    Log.v(TAG, "Moved x to " + x + "," + y + " diff=" + xDiff + "," + yDiff);
                if (xDiff > mTouchSlop && xDiff > yDiff) {
                    if (DEBUG)
                        Log.v(TAG, "Starting drag!");
                    mIsBeingDragged = true;
                    requestParentDisallowInterceptTouchEvent(true);
                    mLastMotionX = x - mInitialMotionX > 0 ? mInitialMotionX + mTouchSlop : mInitialMotionX - mTouchSlop;
                    mLastMotionY = y;
                    setScrollState(SCROLL_STATE_DRAGGING);
                    setScrollingCacheEnabled(true);
                    // Disallow Parent Intercept, just in case
                    ViewParent parent = getParent();
                    if (parent != null) {
                        parent.requestDisallowInterceptTouchEvent(true);
                    }
                }
            }
            // Not else! Note that mIsBeingDragged can be set above.
            if (mIsBeingDragged) {
                // Scroll to follow the motion event
                final int activePointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
                final float x = MotionEventCompat.getX(ev, activePointerIndex);
                needsInvalidate |= performDrag(x);
            }
            break;
        case MotionEvent.ACTION_UP:
            if (mIsBeingDragged) {
                final VelocityTracker velocityTracker = mVelocityTracker;
                velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
                int initialVelocity = (int) VelocityTrackerCompat.getXVelocity(velocityTracker, mActivePointerId);
                final int width = getClientWidth();
                final int scrollX = getScrollX();
                final ItemInfo ii = infoForCurrentScrollPosition();
                final int currentPage = ii.position;
                final float pageOffset = (((float) scrollX / width) - ii.offset) / ii.widthFactor;
                final int activePointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
                final float x = MotionEventCompat.getX(ev, activePointerIndex);
                final int totalDelta = (int) (x - mInitialMotionX);
                if (Math.abs(initialVelocity) > mMinimumVelocity) {
                    fling(initialVelocity);
                    ViewCompat.postInvalidateOnAnimation(this);
                } else {
                    int nextPage = determineTargetPage(currentPage, pageOffset, initialVelocity, totalDelta);
                    setCurrentItemInternal(nextPage, true, true, initialVelocity);
                    needsInvalidate = mLeftEdge.onRelease() | mRightEdge.onRelease();
                }
                mActivePointerId = INVALID_POINTER;
                endDrag();
            } else {
            }
            break;
        case MotionEvent.ACTION_CANCEL:
            if (mIsBeingDragged) {
                scrollToItem(mCurItem, true, 0, false);
                mActivePointerId = INVALID_POINTER;
                endDrag();
                needsInvalidate = mLeftEdge.onRelease() | mRightEdge.onRelease();
            }
            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;
}