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

Example 46 with ViewParent

use of android.view.ViewParent in project weiciyuan by qii.

the class PhotoViewAttacher method onTouch.

@Override
public final boolean onTouch(View v, MotionEvent ev) {
    boolean handled = false;
    if (mZoomEnabled && hasDrawable((ImageView) v)) {
        ViewParent parent = v.getParent();
        switch(ev.getAction()) {
            case ACTION_DOWN:
                // event
                if (null != parent) {
                    parent.requestDisallowInterceptTouchEvent(true);
                } else {
                    Log.i(LOG_TAG, "onTouch getParent() returned null");
                }
                // If we're flinging, and the user presses down, cancel
                // fling
                cancelFling();
                break;
            case ACTION_CANCEL:
            case ACTION_UP:
                // to min scale
                if (getScale() < mMinScale) {
                    RectF rect = getDisplayRect();
                    if (null != rect) {
                        v.post(new AnimatedZoomRunnable(getScale(), mMinScale, rect.centerX(), rect.centerY()));
                        handled = true;
                    }
                }
                break;
        }
        // Try the Scale/Drag detector
        if (null != mScaleDragDetector && mScaleDragDetector.onTouchEvent(ev)) {
            handled = true;
        }
        // Check to see if the user double tapped
        if (null != mGestureDetector && mGestureDetector.onTouchEvent(ev)) {
            handled = true;
        }
    }
    return handled;
}

Example 47 with ViewParent

use of android.view.ViewParent in project weiciyuan by qii.

the class PhotoViewAttacher method onDrag.

@Override
public final void onDrag(float dx, float dy) {
    if (mScaleDragDetector.isScaling()) {
        // Do not drag if we are already scaling
        return;
    }
    if (DEBUG) {
        LogManager.getLogger().d(LOG_TAG, String.format("onDrag: dx: %.2f. dy: %.2f", dx, dy));
    }
    ImageView imageView = getImageView();
    mSuppMatrix.postTranslate(dx, dy);
    checkAndDisplayMatrix();
    /**
         * Here we decide whether to let the ImageView's parent to start taking
         * over the touch event.
         *
         * First we check whether this function is enabled. We never want the
         * parent to take over if we're scaling. We then check the edge we're
         * on, and the direction of the scroll (i.e. if we're pulling against
         * the edge, aka 'overscrolling', let the parent take over).
         */
    ViewParent parent = imageView.getParent();
    if (mAllowParentInterceptOnEdge) {
        if (mScrollEdge == EDGE_BOTH || (mScrollEdge == EDGE_LEFT && dx >= 1f) || (mScrollEdge == EDGE_RIGHT && dx <= -1f)) {
            if (null != parent) {
                parent.requestDisallowInterceptTouchEvent(false);
            }
        }
    } else {
        if (null != parent) {
            parent.requestDisallowInterceptTouchEvent(true);
        }
    }
}

Example 48 with ViewParent

use of android.view.ViewParent in project FlyRefresh by race604.

the class PullHeaderLayout method onTouchEvent.

@Override
public boolean onTouchEvent(MotionEvent ev) {
    MotionEvent vtev = MotionEvent.obtain(ev);
    final int actionMasked = MotionEventCompat.getActionMasked(ev);
    if (actionMasked == MotionEvent.ACTION_DOWN) {
        mNestedYOffset = 0;
    }
    vtev.offsetLocation(0, mNestedYOffset);
    switch(actionMasked) {
        case MotionEvent.ACTION_DOWN:
            {
                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();
                }
                // Remember where the motion event started
                mLastMotionY = (int) ev.getY();
                mActivePointerId = MotionEventCompat.getPointerId(ev, 0);
                startNestedScroll(ViewCompat.SCROLL_AXIS_VERTICAL);
                break;
            }
        case MotionEvent.ACTION_MOVE:
            final int activePointerIndex = MotionEventCompat.findPointerIndex(ev, mActivePointerId);
            if (activePointerIndex == -1) {
                Log.e(TAG, "Invalid pointerId=" + mActivePointerId + " in onTouchEvent");
                break;
            }
            final int y = (int) MotionEventCompat.getY(ev, 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 scrolledDeltaY = moveBy(deltaY);
                final int unconsumedY = deltaY - scrolledDeltaY;
                if (dispatchNestedScroll(0, scrolledDeltaY, 0, unconsumedY, mScrollOffset)) {
                    mLastMotionY -= mScrollOffset[1];
                    vtev.offsetLocation(0, mScrollOffset[1]);
                    mNestedYOffset += mScrollOffset[1];
                }
            }
            break;
        case MotionEvent.ACTION_UP:
            if (mIsBeingDragged) {
                final VelocityTracker velocityTracker = mVelocityTracker;
                velocityTracker.computeCurrentVelocity(1000, mMaximumVelocity);
                int initialVelocity = (int) VelocityTrackerCompat.getYVelocity(velocityTracker, mActivePointerId);
                if ((Math.abs(initialVelocity) > mMinimumVelocity)) {
                    flingWithNestedDispatch(-initialVelocity);
                }
                mActivePointerId = INVALID_POINTER;
                endDrag();
            }
            break;
        case MotionEvent.ACTION_CANCEL:
            if (mIsBeingDragged && getChildCount() > 0) {
                mActivePointerId = INVALID_POINTER;
                endDrag();
            }
            break;
        case MotionEventCompat.ACTION_POINTER_DOWN:
            {
                final int index = MotionEventCompat.getActionIndex(ev);
                mLastMotionY = (int) MotionEventCompat.getY(ev, index);
                mActivePointerId = MotionEventCompat.getPointerId(ev, index);
                break;
            }
        case MotionEventCompat.ACTION_POINTER_UP:
            onSecondaryPointerUp(ev);
            mLastMotionY = (int) MotionEventCompat.getY(ev, MotionEventCompat.findPointerIndex(ev, mActivePointerId));
            break;
    }
    if (mVelocityTracker != null) {
        mVelocityTracker.addMovement(vtev);
    }
    vtev.recycle();
    return true;
}

Example 49 with ViewParent

use of android.view.ViewParent in project mobile-android by photo.

the class Workspace method getScreenForView.

/**
	 * Gets the screen for view.
	 * 
	 * @param v
	 *           the v
	 * @return the screen for view
	 */
public int getScreenForView(View v) {
    int result = -1;
    if (v != null) {
        ViewParent vp = v.getParent();
        int count = mItemCount;
        for (int i = 0; i < count; i++) {
            if (vp == getChildAt(i)) {
                return i;
            }
        }
    }
    return result;
}

Example 50 with ViewParent

use of android.view.ViewParent in project Libraries-for-Android-Developers by eoecn.

the class ActionBarView method onFinishInflate.

@Override
protected void onFinishInflate() {
    super.onFinishInflate();
    addView(mHomeLayout);
    if (mCustomNavView != null && (mDisplayOptions & ActionBar.DISPLAY_SHOW_CUSTOM) != 0) {
        final ViewParent parent = mCustomNavView.getParent();
        if (parent != this) {
            if (parent instanceof ViewGroup) {
                ((ViewGroup) parent).removeView(mCustomNavView);
            }
            addView(mCustomNavView);
        }
    }
}