Merge "Change the strategy of handling batched input events" into tm-qpr-dev am: 2699850a

import android.os.Binder;

import android.os.Handler;

import android.os.IBinder;

import android.os.Looper;

import android.os.RemoteException;

import android.view.Choreographer;

import android.view.IWindowSession;

import android.view.InputChannel;

import android.view.InputEvent;

            e.rethrowFromSystemServer();

        }

        mInputEventReceiver = new TaskResizeInputEventReceiver(mInputChannel, mHandler.getLooper());

        mInputEventReceiver = new TaskResizeInputEventReceiver(mInputChannel, mHandler);

        mCallback = callback;

    }

        } catch (RemoteException e) {

            e.rethrowFromSystemServer();

        }

        // This marks all relevant components have handled the previous resize event and can take

        // the next one now.

        mInputEventReceiver.onHandledLastResizeEvent();

    }

    @Override

    }

    private class TaskResizeInputEventReceiver extends InputEventReceiver {

        private boolean mWaitingForLastResizeEventHandled;

        private final Choreographer mChoreographer;

        private final Runnable mConsumeBatchEventRunnable;

        private boolean mConsumeBatchEventScheduled;

        private TaskResizeInputEventReceiver(InputChannel inputChannel, Looper looper) {

            super(inputChannel, looper);

        }

        private TaskResizeInputEventReceiver(InputChannel inputChannel, Handler handler) {

            super(inputChannel, handler.getLooper());

        private void onHandledLastResizeEvent() {

            mWaitingForLastResizeEventHandled = false;

            consumeBatchedInputEvents(-1);

            final Choreographer[] choreographer = new Choreographer[1];

            handler.runWithScissors(

                    () -> choreographer[0] = Choreographer.getInstance(), 0);

            mChoreographer = choreographer[0];

            mConsumeBatchEventRunnable = () -> {

                mConsumeBatchEventScheduled = false;

                if (consumeBatchedInputEvents(mChoreographer.getFrameTimeNanos())) {

                    // If we consumed a batch here, we want to go ahead and schedule the

                    // consumption of batched input events on the next frame. Otherwise, we would

                    // wait until we have more input events pending and might get starved by other

                    // things occurring in the process.

                    scheduleConsumeBatchEvent();

                }

            };

        }

        @Override

        public void onBatchedInputEventPending(int source) {

            // InputEventReceiver keeps continuous move events in a batched event until explicitly

            // consuming it or an incompatible event shows up (likely an up event in this case). We

            // continue to keep move events in the next batched event until we receive a geometry

            // update so that we don't put too much pressure on the framework with excessive number

            // of input events if it can't handle them fast enough. It's more responsive to always

            // resize the task to the latest received coordinates.

            if (!mWaitingForLastResizeEventHandled) {

                consumeBatchedInputEvents(-1);

            scheduleConsumeBatchEvent();

        }

        private void scheduleConsumeBatchEvent() {

            if (mConsumeBatchEventScheduled) {

                return;

            }

            mChoreographer.postCallback(

                    Choreographer.CALLBACK_INPUT, mConsumeBatchEventRunnable, null);

            mConsumeBatchEventScheduled = true;

        }

        @Override

                    mDragPointerId = e.getPointerId(0);

                    mCallback.onDragResizeStart(

                            calculateCtrlType(e.getX(0), e.getY(0)), e.getRawX(0), e.getRawY(0));

                    mWaitingForLastResizeEventHandled = false;

                    break;

                }

                case MotionEvent.ACTION_MOVE: {

                    int dragPointerIndex = e.findPointerIndex(mDragPointerId);

                    mCallback.onDragResizeMove(

                            e.getRawX(dragPointerIndex), e.getRawY(dragPointerIndex));

                    mWaitingForLastResizeEventHandled = true;

                    break;

                }

                case MotionEvent.ACTION_UP:

                    int dragPointerIndex = e.findPointerIndex(mDragPointerId);

                    mCallback.onDragResizeEnd(

                            e.getRawX(dragPointerIndex), e.getRawY(dragPointerIndex));

                    mWaitingForLastResizeEventHandled = false;

                    mDragPointerId = -1;

                    break;

                }