Revert "Revert "Scribe in IMF: startStylusHandwriting & lifecycl..." (94324080) · Commits · e / os / android_frameworks_base

core/api/current.txt

+5 −0

Original line number	Diff line number	Diff line
		@@ -19741,6 +19741,7 @@ package android.inputmethodservice {
		@UiContext public class InputMethodService extends android.inputmethodservice.AbstractInputMethodService {
		ctor public InputMethodService();
		method @Deprecated public boolean enableHardwareAcceleration();
		method public final void finishStylusHandwriting();
		method public int getBackDisposition();
		method public int getCandidatesHiddenVisibility();
		method public android.view.inputmethod.InputBinding getCurrentInputBinding();
		@@ -19750,6 +19751,7 @@ package android.inputmethodservice {
		method @Deprecated public int getInputMethodWindowRecommendedHeight();
		method public android.view.LayoutInflater getLayoutInflater();
		method public int getMaxWidth();
		method @Nullable public final android.view.Window getStylusHandwritingWindow();
		method public CharSequence getTextForImeAction(int);
		method public android.app.Dialog getWindow();
		method public void hideStatusIcon();
		@@ -19780,6 +19782,7 @@ package android.inputmethodservice {
		method public void onFinishCandidatesView(boolean);
		method public void onFinishInput();
		method public void onFinishInputView(boolean);
		method public void onFinishStylusHandwriting();
		method public void onInitializeInterface();
		method public boolean onInlineSuggestionsResponse(@NonNull android.view.inputmethod.InlineSuggestionsResponse);
		method public boolean onKeyDown(int, android.view.KeyEvent);
		@@ -19790,6 +19793,7 @@ package android.inputmethodservice {
		method public void onStartCandidatesView(android.view.inputmethod.EditorInfo, boolean);
		method public void onStartInput(android.view.inputmethod.EditorInfo, boolean);
		method public void onStartInputView(android.view.inputmethod.EditorInfo, boolean);
		method public boolean onStartStylusHandwriting();
		method public void onUnbindInput();
		method @Deprecated public void onUpdateCursor(android.graphics.Rect);
		method public void onUpdateCursorAnchorInfo(android.view.inputmethod.CursorAnchorInfo);
		@@ -53170,6 +53174,7 @@ package android.view.inputmethod {
		method public boolean showSoftInput(android.view.View, int, android.os.ResultReceiver);
		method @Deprecated public void showSoftInputFromInputMethod(android.os.IBinder, int);
		method @Deprecated public void showStatusIcon(android.os.IBinder, String, @DrawableRes int);
		method public void startStylusHandwriting(@NonNull android.view.View);
		method @Deprecated public boolean switchToLastInputMethod(android.os.IBinder);
		method @Deprecated public boolean switchToNextInputMethod(android.os.IBinder, boolean);
		method @Deprecated public void toggleSoftInput(int, int);

core/java/android/inputmethodservice/IInputMethodWrapper.java

+40 −4

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@ package android.inputmethodservice;

		import android.annotation.BinderThread;
		import android.annotation.MainThread;
		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.compat.annotation.UnsupportedAppUsage;
		import android.content.Context;
		@@ -29,6 +30,7 @@ import android.os.RemoteException;
		import android.os.ResultReceiver;
		import android.util.Log;
		import android.view.InputChannel;
		import android.view.MotionEvent;
		import android.view.inputmethod.EditorInfo;
		import android.view.inputmethod.InputBinding;
		import android.view.inputmethod.InputConnection;
		@@ -50,6 +52,7 @@ import com.android.internal.view.InlineSuggestionsRequestInfo;
		import java.io.FileDescriptor;
		import java.io.PrintWriter;
		import java.lang.ref.WeakReference;
		import java.util.List;
		import java.util.concurrent.CountDownLatch;
		import java.util.concurrent.TimeUnit;

		@@ -74,6 +77,8 @@ class IInputMethodWrapper extends IInputMethod.Stub
		private static final int DO_HIDE_SOFT_INPUT = 70;
		private static final int DO_CHANGE_INPUTMETHOD_SUBTYPE = 80;
		private static final int DO_CREATE_INLINE_SUGGESTIONS_REQUEST = 90;
		private static final int DO_CAN_START_STYLUS_HANDWRITING = 100;
		private static final int DO_START_STYLUS_HANDWRITING = 110;

		final WeakReference<InputMethodServiceInternal> mTarget;
		final Context mContext;
		@@ -169,7 +174,8 @@ class IInputMethodWrapper extends IInputMethod.Stub
		SomeArgs args = (SomeArgs) msg.obj;
		try {
		inputMethod.initializeInternal((IBinder) args.arg1,
		(IInputMethodPrivilegedOperations) args.arg2, msg.arg1);
		(IInputMethodPrivilegedOperations) args.arg2, msg.arg1,
		(boolean) args.arg3);
		} finally {
		args.recycle();
		}
		@@ -229,13 +235,25 @@ class IInputMethodWrapper extends IInputMethod.Stub
		case DO_CHANGE_INPUTMETHOD_SUBTYPE:
		inputMethod.changeInputMethodSubtype((InputMethodSubtype)msg.obj);
		return;
		case DO_CREATE_INLINE_SUGGESTIONS_REQUEST:
		case DO_CREATE_INLINE_SUGGESTIONS_REQUEST: {
		final SomeArgs args = (SomeArgs) msg.obj;
		inputMethod.onCreateInlineSuggestionsRequest(
		(InlineSuggestionsRequestInfo) args.arg1,
		(IInlineSuggestionsRequestCallback) args.arg2);
		args.recycle();
		return;
		}
		case DO_CAN_START_STYLUS_HANDWRITING: {
		inputMethod.canStartStylusHandwriting(msg.arg1);
		return;
		}
		case DO_START_STYLUS_HANDWRITING: {
		final SomeArgs args = (SomeArgs) msg.obj;
		inputMethod.startStylusHandwriting((InputChannel) args.arg1,
		(List<MotionEvent>) args.arg2);
		args.recycle();
		return;
		}

		}
		Log.w(TAG, "Unhandled message code: " + msg.what);
		@@ -272,9 +290,10 @@ class IInputMethodWrapper extends IInputMethod.Stub
		@BinderThread
		@Override
		public void initializeInternal(IBinder token, IInputMethodPrivilegedOperations privOps,
		int configChanges) {
		int configChanges, boolean stylusHwSupported) {
		mCaller.executeOrSendMessage(
		mCaller.obtainMessageIOO(DO_INITIALIZE_INTERNAL, configChanges, token, privOps));
		mCaller.obtainMessageIOOO(
		DO_INITIALIZE_INTERNAL, configChanges, token, privOps, stylusHwSupported));
		}

		@BinderThread
		@@ -383,4 +402,21 @@ class IInputMethodWrapper extends IInputMethod.Stub
		mCaller.executeOrSendMessage(mCaller.obtainMessageO(DO_CHANGE_INPUTMETHOD_SUBTYPE,
		subtype));
		}

		@BinderThread
		@Override
		public void canStartStylusHandwriting(int requestId)
		throws RemoteException {
		mCaller.executeOrSendMessage(
		mCaller.obtainMessageI(DO_CAN_START_STYLUS_HANDWRITING, requestId));
		}

		@BinderThread
		@Override
		public void startStylusHandwriting(@NonNull InputChannel channel,
		@Nullable List<MotionEvent> stylusEvents)
		throws RemoteException {
		mCaller.executeOrSendMessage(
		mCaller.obtainMessageOO(DO_START_STYLUS_HANDWRITING, channel, stylusEvents));
		}
		}

core/java/android/inputmethodservice/InkWindow.java

0 → 100644

+88 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2021 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.inputmethodservice;

		import static android.view.WindowManager.LayoutParams;
		import static android.view.WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;
		import static android.view.WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS;
		import static android.view.WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
		import static android.view.WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;

		import android.annotation.NonNull;
		import android.content.Context;
		import android.os.IBinder;
		import android.util.Slog;
		import android.view.View;
		import android.view.WindowManager;

		import com.android.internal.policy.PhoneWindow;

		/**
		* Window of type {@code LayoutParams.TYPE_INPUT_METHOD_DIALOG} for drawing
		* Handwriting Ink on screen.
		* @hide
		*/
		final class InkWindow extends PhoneWindow {

		private final WindowManager mWindowManager;

		public InkWindow(@NonNull Context context) {
		super(context);

		setType(LayoutParams.TYPE_INPUT_METHOD);
		final LayoutParams attrs = getAttributes();
		attrs.layoutInDisplayCutoutMode = LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;
		attrs.setFitInsetsTypes(0);
		setAttributes(attrs);
		// Ink window is not touchable with finger.
		addFlags(FLAG_LAYOUT_IN_SCREEN \| FLAG_LAYOUT_NO_LIMITS \| FLAG_NOT_TOUCHABLE
		\| FLAG_NOT_FOCUSABLE);
		setBackgroundDrawableResource(android.R.color.transparent);
		setLayout(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
		mWindowManager = context.getSystemService(WindowManager.class);
		}

		/**
		* Method to show InkWindow on screen.
		* Emulates internal behavior similar to Dialog.show().
		*/
		void show() {
		if (getDecorView() == null) {
		Slog.i(InputMethodService.TAG, "DecorView is not set for InkWindow. show() failed.");
		return;
		}
		getDecorView().setVisibility(View.VISIBLE);
		mWindowManager.addView(getDecorView(), getAttributes());
		}

		/**
		* Method to hide InkWindow from screen.
		* Emulates internal behavior similar to Dialog.hide().
		* @param remove set {@code true} to remove InkWindow surface completely.
		*/
		void hide(boolean remove) {
		if (getDecorView() != null) {
		getDecorView().setVisibility(remove ? View.GONE : View.INVISIBLE);
		}
		}

		void setToken(@NonNull IBinder token) {
		WindowManager.LayoutParams lp = getAttributes();
		lp.token = token;
		setAttributes(lp);
		}
		}

core/java/android/inputmethodservice/InputMethodService.java

+132 −1

Original line number	Diff line number	Diff line
		@@ -94,6 +94,7 @@ import android.util.PrintWriterPrinter;
		import android.util.Printer;
		import android.util.proto.ProtoOutputStream;
		import android.view.Gravity;
		import android.view.InputChannel;
		import android.view.KeyCharacterMap;
		import android.view.KeyEvent;
		import android.view.LayoutInflater;
		@@ -119,6 +120,7 @@ import android.view.inputmethod.InputConnection;
		import android.view.inputmethod.InputContentInfo;
		import android.view.inputmethod.InputMethod;
		import android.view.inputmethod.InputMethodEditorTraceProto.InputMethodServiceTraceProto;
		import android.view.inputmethod.InputMethodInfo;
		import android.view.inputmethod.InputMethodManager;
		import android.view.inputmethod.InputMethodSubtype;
		import android.widget.FrameLayout;
		@@ -142,6 +144,7 @@ import java.io.PrintWriter;
		import java.lang.annotation.Retention;
		import java.lang.annotation.RetentionPolicy;
		import java.util.ArrayList;
		import java.util.List;
		import java.util.Objects;

		/**
		@@ -520,11 +523,15 @@ public class InputMethodService extends AbstractInputMethodService {

		private boolean mAutomotiveHideNavBarForKeyboard;
		private boolean mIsAutomotive;
		private boolean mHandwritingStarted;
		private Handler mHandler;
		private boolean mImeSurfaceScheduledForRemoval;
		private ImsConfigurationTracker mConfigTracker = new ImsConfigurationTracker();
		private boolean mDestroyed;

		/** Stylus handwriting Ink window. */
		private InkWindow mInkWindow;

		/**
		* An opaque {@link Binder} token of window requesting {@link InputMethodImpl#showSoftInput}
		* The original app window token is passed from client app window.
		@@ -599,7 +606,8 @@ public class InputMethodService extends AbstractInputMethodService {
		@MainThread
		@Override
		public final void initializeInternal(@NonNull IBinder token,
		IInputMethodPrivilegedOperations privilegedOperations, int configChanges) {
		IInputMethodPrivilegedOperations privilegedOperations, int configChanges,
		boolean stylusHwSupported) {
		if (mDestroyed) {
		Log.i(TAG, "The InputMethodService has already onDestroyed()."
		+ "Ignore the initialization.");
		@@ -609,6 +617,9 @@ public class InputMethodService extends AbstractInputMethodService {
		mConfigTracker.onInitialize(configChanges);
		mPrivOps.set(privilegedOperations);
		InputMethodPrivilegedOperationsRegistry.put(token, mPrivOps);
		if (stylusHwSupported) {
		mInkWindow = new InkWindow(mWindow.getContext());
		}
		attachToken(token);
		Trace.traceEnd(TRACE_TAG_WINDOW_MANAGER);
		}
		@@ -641,6 +652,9 @@ public class InputMethodService extends AbstractInputMethodService {
		attachToWindowToken(token);
		mToken = token;
		mWindow.setToken(token);
		if (mInkWindow != null) {
		mInkWindow.setToken(token);
		}
		}

		/**
		@@ -822,6 +836,49 @@ public class InputMethodService extends AbstractInputMethodService {
		Trace.traceEnd(TRACE_TAG_WINDOW_MANAGER);
		}

		/**
		* {@inheritDoc}
		* @hide
		*/
		@Override
		public void canStartStylusHandwriting(int requestId) {
		if (DEBUG) Log.v(TAG, "canStartStylusHandwriting()");
		if (mHandwritingStarted) {
		Log.d(TAG, "There is an ongoing Handwriting session. ignoring.");
		return;
		}
		if (!mInputStarted) {
		Log.d(TAG, "Input should have started before starting Stylus handwriting.");
		return;
		}
		if (onStartStylusHandwriting()) {
		mPrivOps.onStylusHandwritingReady(requestId);
		} else {
		Log.i(TAG, "IME is not ready. Can't start Stylus Handwriting");
		}
		}

		/**
		* {@inheritDoc}
		* @hide
		*/
		@MainThread
		@Override
		public void startStylusHandwriting(
		@NonNull InputChannel channel, @Nullable List<MotionEvent> stylusEvents) {
		if (DEBUG) Log.v(TAG, "startStylusHandwriting()");
		if (mHandwritingStarted) {
		return;
		}

		mHandwritingStarted = true;
		mShowInputRequested = false;

		mInkWindow.show();
		// TODO: deliver previous @param stylusEvents
		// TODO: create spy receiver for @param channel
		}

		/**
		* {@inheritDoc}
		*/
		@@ -2192,6 +2249,77 @@ public class InputMethodService extends AbstractInputMethodService {
		}
		}

		/**
		* Called when an app requests stylus handwriting
		* {@link InputMethodManager#startStylusHandwriting(View)}.
		*
		* This will always be preceded by {@link #onStartInput(EditorInfo, boolean)} for the
		* {@link EditorInfo} and {@link InputConnection} for which stylus handwriting is being
		* requested.
		*
		* If the IME supports handwriting for the current input, it should return {@code true},
		* ensure its inking views are attached to the {@link #getStylusHandwritingWindow()}, and handle
		* stylus input received on the ink window via {@link #getCurrentInputConnection()}.
		* @return {@code true} if IME can honor the request, {@code false} if IME cannot at this time.
		*/
		public boolean onStartStylusHandwriting() {
		// Intentionally empty
		return false;
		}

		/**
		* Called when the current stylus handwriting session was finished (either by the system or
		* via {@link #finishStylusHandwriting()}.
		*
		* When this is called, the ink window has been made invisible, and the IME no longer
		* intercepts handwriting-related {@code MotionEvent}s.
		*/
		public void onFinishStylusHandwriting() {
		// Intentionally empty
		}

		/**
		* Returns the stylus handwriting inking window.
		* IMEs supporting stylus input are expected to attach their inking views to this
		* window (e.g. with {@link Window#setContentView(View)} )). Handwriting-related
		* {@link MotionEvent}s are dispatched to the attached view hierarchy.
		*
		* Note: This returns {@code null} if IME doesn't support stylus handwriting
		* i.e. if {@link InputMethodInfo#supportsStylusHandwriting()} is false.
		* This method should be called after {@link #onStartStylusHandwriting()}.
		* @see #onStartStylusHandwriting()
		*/
		@Nullable
		public final Window getStylusHandwritingWindow() {
		return mInkWindow;
		}

		/**
		* Finish the current stylus handwriting session.
		*
		* This dismisses the {@link #getStylusHandwritingWindow ink window} and stops intercepting
		* stylus {@code MotionEvent}s.
		*
		* Note for IME developers: Call this method at any time to finish current handwriting session.
		* Generally, this should be invoked after a short timeout, giving the user enough time
		* to start the next stylus stroke, if any.
		*
		* Handwriting session will be finished by framework on next {@link #onFinishInput()}.
		*/
		public final void finishStylusHandwriting() {
		if (DEBUG) Log.v(TAG, "finishStylusHandwriting()");
		if (mInkWindow == null) {
		return;
		}
		if (!mHandwritingStarted) {
		return;
		}

		mHandwritingStarted = false;
		mInkWindow.hide(false /* remove */);
		onFinishStylusHandwriting();
		}

		/**
		* The system has decided that it may be time to show your input method.
		* This is called due to a corresponding call to your
		@@ -2461,6 +2589,9 @@ public class InputMethodService extends AbstractInputMethodService {
		mInputStarted = false;
		mStartedInputConnection = null;
		mCurCompletions = null;
		if (mInkWindow != null) {
		finishStylusHandwriting();
		}
		}

		void doStartInput(InputConnection ic, EditorInfo attribute, boolean restarting) {

core/java/android/view/inputmethod/InputMethod.java

+26 −1

Original line number	Diff line number	Diff line
		@@ -26,12 +26,16 @@ import android.os.IBinder;
		import android.os.RemoteException;
		import android.os.ResultReceiver;
		import android.util.Log;
		import android.view.InputChannel;
		import android.view.MotionEvent;
		import android.view.View;

		import com.android.internal.inputmethod.IInputMethodPrivilegedOperations;
		import com.android.internal.view.IInlineSuggestionsRequestCallback;
		import com.android.internal.view.InlineSuggestionsRequestInfo;

		import java.util.List;

		/**
		* The InputMethod interface represents an input method which can generate key
		* events and text, such as digital, email addresses, CJK characters, other
		@@ -100,11 +104,13 @@ public interface InputMethod {
		* operations that are allowed only to the
		* current IME.
		* @param configChanges {@link InputMethodInfo#getConfigChanges()} declared by IME.
		* @param stylusHwSupported {@link InputMethodInfo#supportsStylusHandwriting()} declared by IME.
		* @hide
		*/
		@MainThread
		default void initializeInternal(IBinder token,
		IInputMethodPrivilegedOperations privilegedOperations, int configChanges) {
		IInputMethodPrivilegedOperations privilegedOperations, int configChanges,
		boolean stylusHwSupported) {
		attachToken(token);
		}

		@@ -384,4 +390,23 @@ public interface InputMethod {
		*/
		public void setCurrentHideInputToken(IBinder hideInputToken);

		/**
		* Checks if IME is ready to start stylus handwriting session.
		* If yes, {@link #startStylusHandwriting(InputChannel, List)} is called.
		* @param requestId
		* @hide
		*/
		default void canStartStylusHandwriting(int requestId) {
		// intentionally empty
		}

		/**
		* Start stylus handwriting session.
		* @hide
		*/
		default void startStylusHandwriting(
		@NonNull InputChannel channel, @Nullable List<MotionEvent> events) {
		// intentionally empty
		}

		}