| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.view; |
| |
| import static java.lang.annotation.RetentionPolicy.SOURCE; |
| |
| import android.annotation.IntDef; |
| import android.annotation.NonNull; |
| import android.annotation.SuppressLint; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| |
| import java.lang.annotation.Retention; |
| |
| |
| /** |
| * Base class for verified events. |
| * Verified events contain the subset of an InputEvent that the system can verify. |
| * Data contained inside VerifiedInputEvent's should be considered trusted and contain only |
| * the original event data that first came from the system. |
| * |
| * @see android.hardware.input.InputManager#verifyInputEvent(InputEvent) |
| */ |
| @SuppressLint("ParcelNotFinal") |
| public abstract class VerifiedInputEvent implements Parcelable { |
| private static final String TAG = "VerifiedInputEvent"; |
| |
| /** @hide */ |
| protected static final int VERIFIED_KEY = 1; |
| /** @hide */ |
| protected static final int VERIFIED_MOTION = 2; |
| |
| /** @hide */ |
| @Retention(SOURCE) |
| @IntDef(prefix = "VERIFIED", value = {VERIFIED_KEY, VERIFIED_MOTION}) |
| public @interface VerifiedInputEventType {}; |
| |
| @VerifiedInputEventType |
| private int mType; |
| |
| private int mDeviceId; |
| private long mEventTimeNanos; |
| private int mSource; |
| private int mDisplayId; |
| |
| /** @hide */ |
| protected VerifiedInputEvent(int type, int deviceId, long eventTimeNanos, int source, |
| int displayId) { |
| mType = type; |
| mDeviceId = deviceId; |
| mEventTimeNanos = eventTimeNanos; |
| mSource = source; |
| mDisplayId = displayId; |
| } |
| /** @hide */ |
| protected VerifiedInputEvent(@NonNull Parcel in, int expectedType) { |
| mType = in.readInt(); |
| if (mType != expectedType) { |
| throw new IllegalArgumentException("Unexpected input event type token in parcel."); |
| } |
| mDeviceId = in.readInt(); |
| mEventTimeNanos = in.readLong(); |
| mSource = in.readInt(); |
| mDisplayId = in.readInt(); |
| } |
| |
| /** |
| * Get the id of the device that generated this event. |
| * |
| * @see InputEvent#getDeviceId() |
| */ |
| public int getDeviceId() { |
| return mDeviceId; |
| } |
| |
| /** |
| * Get the time this event occurred, in the {@link android.os.SystemClock#uptimeMillis()} |
| * time base. |
| * |
| * @see InputEvent#getEventTime() |
| */ |
| @SuppressLint("MethodNameUnits") |
| public long getEventTimeNanos() { |
| return mEventTimeNanos; |
| } |
| |
| /** |
| * Get the source of the event. |
| * |
| * @see InputEvent#getSource() |
| */ |
| public int getSource() { |
| return mSource; |
| } |
| |
| /** |
| * Get the display id that is associated with this event. |
| * |
| * @see Display#getDisplayId() |
| */ |
| public int getDisplayId() { |
| return mDisplayId; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void writeToParcel(@NonNull Parcel dest, int flags) { |
| dest.writeInt(mType); |
| dest.writeInt(mDeviceId); |
| dest.writeLong(mEventTimeNanos); |
| dest.writeInt(mSource); |
| dest.writeInt(mDisplayId); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| private static int peekInt(@NonNull Parcel parcel) { |
| final int initialDataPosition = parcel.dataPosition(); |
| int data = parcel.readInt(); |
| parcel.setDataPosition(initialDataPosition); |
| return data; |
| } |
| |
| public static final @NonNull Parcelable.Creator<VerifiedInputEvent> CREATOR = |
| new Parcelable.Creator<VerifiedInputEvent>() { |
| @Override |
| public VerifiedInputEvent[] newArray(int size) { |
| return new VerifiedInputEvent[size]; |
| } |
| |
| @Override |
| public VerifiedInputEvent createFromParcel(@NonNull Parcel in) { |
| final int type = peekInt(in); |
| if (type == VERIFIED_KEY) { |
| return VerifiedKeyEvent.CREATOR.createFromParcel(in); |
| } else if (type == VERIFIED_MOTION) { |
| return VerifiedMotionEvent.CREATOR.createFromParcel(in); |
| } |
| throw new IllegalArgumentException("Unexpected input event type in parcel."); |
| } |
| }; |
| } |