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Idle-timeout handwriting delegation

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Reset stylus handwriting delegation after an idle-timeout

Bug: 210039666
Bug: 274627915
Test: StylusHandwritingTest

Change-Id: Ibad1ffadc8b6c776239f2b5ab14bc82cf67308dd
This commit is contained in:
Taran Singh
2023-03-22 22:19:06 +00:00
parent 2d07610d2c
commit dc728e6005
1 changed files with 43 additions and 6 deletions
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49
services/core/java/com/android/server/inputmethod/HandwritingModeController.java
View File

@@ -25,6 +25,7 @@ import android.annotation.Nullable;
import android.annotation.RequiresPermission;
import android.annotation.UiThread;
import android.hardware.input.InputManager;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.text.TextUtils;
@@ -55,17 +56,20 @@ final class HandwritingModeController {
public static final String TAG = HandwritingModeController.class.getSimpleName();
// TODO(b/210039666): flip the flag.
static final boolean DEBUG = true;
// Use getHandwritingBufferSize() and not this value directly.
private static final int EVENT_BUFFER_SIZE = 100;
// A longer event buffer used for handwriting delegation
// TODO(b/210039666): make this device touch sampling rate dependent.
private static final int LONG_EVENT_BUFFER = EVENT_BUFFER_SIZE * 20;
// Use getHandwritingBufferSize() and not this value directly.
private static final int LONG_EVENT_BUFFER_SIZE = EVENT_BUFFER_SIZE * 20;
private static final long HANDWRITING_DELEGATION_IDLE_TIMEOUT_MS = 3000;
// This must be the looper for the UiThread.
private final Looper mLooper;
private final InputManagerInternal mInputManagerInternal;
private final WindowManagerInternal mWindowManagerInternal;
private List<MotionEvent> mHandwritingBuffer;
private ArrayList<MotionEvent> mHandwritingBuffer;
private InputEventReceiver mHandwritingEventReceiver;
private Runnable mInkWindowInitRunnable;
private boolean mRecordingGesture;
@@ -73,6 +77,8 @@ final class HandwritingModeController {
// when set, package names are used for handwriting delegation.
private @Nullable String mDelegatePackageName;
private @Nullable String mDelegatorPackageName;
private Runnable mDelegationIdleTimeoutRunnable;
private Handler mDelegationIdleTimeoutHandler;
private HandwritingEventReceiverSurface mHandwritingSurface;
@@ -110,7 +116,7 @@ final class HandwritingModeController {
mCurrentDisplayId = displayId;
if (mHandwritingBuffer == null) {
mHandwritingBuffer = new ArrayList<>(EVENT_BUFFER_SIZE);
mHandwritingBuffer = new ArrayList<>(getHandwritingBufferSize());
}
if (DEBUG) Slog.d(TAG, "Initializing handwriting spy monitor for display: " + displayId);
@@ -159,8 +165,8 @@ final class HandwritingModeController {
@NonNull String delegatePackageName, @NonNull String delegatorPackageName) {
mDelegatePackageName = delegatePackageName;
mDelegatorPackageName = delegatorPackageName;
((ArrayList) mHandwritingBuffer).ensureCapacity(LONG_EVENT_BUFFER);
// TODO(b/210039666): cancel delegation after a timeout or next input method client binding.
mHandwritingBuffer.ensureCapacity(getHandwritingBufferSize());
scheduleHandwritingDelegationTimeout();
}
@Nullable String getDelegatePackageName() {
@@ -171,6 +177,32 @@ final class HandwritingModeController {
return mDelegatorPackageName;
}
private void scheduleHandwritingDelegationTimeout() {
if (mDelegationIdleTimeoutHandler == null) {
mDelegationIdleTimeoutHandler = new Handler(mLooper);
} else {
mDelegationIdleTimeoutHandler.removeCallbacks(mDelegationIdleTimeoutRunnable);
}
mDelegationIdleTimeoutRunnable = () -> {
Slog.d(TAG, "Stylus handwriting delegation idle timed-out.");
clearPendingHandwritingDelegation();
if (mHandwritingBuffer != null) {
mHandwritingBuffer.forEach(MotionEvent::recycle);
mHandwritingBuffer.clear();
mHandwritingBuffer.trimToSize();
mHandwritingBuffer.ensureCapacity(getHandwritingBufferSize());
}
};
mDelegationIdleTimeoutHandler.postDelayed(
mDelegationIdleTimeoutRunnable, HANDWRITING_DELEGATION_IDLE_TIMEOUT_MS);
}
private int getHandwritingBufferSize() {
if (mDelegatePackageName != null && mDelegatorPackageName != null) {
return LONG_EVENT_BUFFER_SIZE;
}
return EVENT_BUFFER_SIZE;
}
/**
* Clear any pending handwriting delegation info.
*/
@@ -178,6 +210,11 @@ final class HandwritingModeController {
if (DEBUG) {
Slog.d(TAG, "clearPendingHandwritingDelegation");
}
if (mDelegationIdleTimeoutHandler != null) {
mDelegationIdleTimeoutHandler.removeCallbacks(mDelegationIdleTimeoutRunnable);
mDelegationIdleTimeoutHandler = null;
}
mDelegationIdleTimeoutRunnable = null;
mDelegatorPackageName = null;
mDelegatePackageName = null;
}
@@ -322,7 +359,7 @@ final class HandwritingModeController {
return;
}
if (mHandwritingBuffer.size() >= EVENT_BUFFER_SIZE) {
if (mHandwritingBuffer.size() >= getHandwritingBufferSize()) {
if (DEBUG) {
Slog.w(TAG, "Current gesture exceeds the buffer capacity."
+ " The rest of the gesture will not be recorded.");