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Commit ea5a5df8 authored by Omar Abdelmonem's avatar Omar Abdelmonem
Browse files

Create prototype for TouchpadDebugView 

The TouchpadDebugViewController manages the lifecycle of the
TouchpadDebugView, which provides visual debugging information for
touchpad devices. This controller listens for touchpad device additions
and removals and appropriately shows or hides the debug view in response.

Bug: 355451044
Bug: 286551975

Test: Verified that the linear view pops up only when both the feature
flag is turned on and the touchpad is connected.
Flag: com.android.hardware.input.touchpad_visualizer
Change-Id: Iabe19a291c94ef3376e85bf80a7b45c6b1da2cbd
parent d5846c23

services/core/java/com/android/server/input/InputManagerService.java

+12 −0
Original line number Diff line number Diff line
@@ -20,6 +20,8 @@ import static android.provider.DeviceConfig.NAMESPACE_INPUT_NATIVE_BOOT; 
import static android.view.KeyEvent.KEYCODE_UNKNOWN;

import static android.view.WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;



import static com.android.hardware.input.Flags.touchpadVisualizer;



import android.Manifest;

import android.annotation.EnforcePermission;

import android.annotation.NonNull;
@@ -121,6 +123,7 @@ import com.android.server.LocalServices; 
import com.android.server.Watchdog;

import com.android.server.input.InputManagerInternal.LidSwitchCallback;

import com.android.server.input.debug.FocusEventDebugView;

import com.android.server.input.debug.TouchpadDebugViewController;

import com.android.server.inputmethod.InputMethodManagerInternal;

import com.android.server.policy.WindowManagerPolicy;
@@ -303,6 +306,9 @@ public class InputManagerService extends IInputManager.Stub 
    // Manages battery state for input devices.

    private final BatteryController mBatteryController;



    @Nullable

    private final TouchpadDebugViewController mTouchpadDebugViewController;



    // Manages Keyboard backlight

    private final KeyboardBacklightControllerInterface mKeyboardBacklightController;
@@ -460,6 +466,9 @@ public class InputManagerService extends IInputManager.Stub 
        mSettingsObserver = new InputSettingsObserver(mContext, mHandler, this, mNative);

        mKeyboardLayoutManager = new KeyboardLayoutManager(mContext, mNative, mDataStore,

                injector.getLooper());

        mTouchpadDebugViewController =

                touchpadVisualizer() ? new TouchpadDebugViewController(mContext,

                        injector.getLooper()) : null;

        mBatteryController = new BatteryController(mContext, mNative, injector.getLooper(),

                injector.getUEventManager());

        mKeyboardBacklightController = InputFeatureFlagProvider.isKeyboardBacklightControlEnabled()
@@ -589,6 +598,9 @@ public class InputManagerService extends IInputManager.Stub 
        mKeyRemapper.systemRunning();

        mPointerIconCache.systemRunning();

        mKeyboardGlyphManager.systemRunning();

        if (mTouchpadDebugViewController != null) {

            mTouchpadDebugViewController.systemRunning();

        }

    }



    private void reloadDeviceAliases() {

services/core/java/com/android/server/input/debug/TouchpadDebugView.java

0 → 100644
+71 −0
Original line number Diff line number Diff line 
/*

 * Copyright 2024 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 com.android.server.input.debug;



import android.content.Context;

import android.graphics.Color;

import android.view.Gravity;

import android.widget.LinearLayout;

import android.widget.TextView;



public class TouchpadDebugView extends LinearLayout {



    /**

     * Input device ID for the touchpad that this debug view is displaying.

     */

    private final int mTouchpadId;



    public TouchpadDebugView(Context context, int touchpadId) {

        super(context);

        mTouchpadId = touchpadId;

        init(context);

    }



    private void init(Context context) {

        setOrientation(VERTICAL);

        setLayoutParams(new LinearLayout.LayoutParams(

                LinearLayout.LayoutParams.WRAP_CONTENT,

                LinearLayout.LayoutParams.WRAP_CONTENT));

        setBackgroundColor(Color.TRANSPARENT);



        // TODO(b/286551975): Replace this content with the touchpad debug view.



        TextView textView1 = new TextView(context);

        textView1.setBackgroundColor(Color.parseColor("#FFFF0000"));

        textView1.setTextSize(20);

        textView1.setText("Touchpad Debug View 1");

        textView1.setGravity(Gravity.CENTER);

        textView1.setTextColor(Color.WHITE);



        textView1.setLayoutParams(new LayoutParams(1000, 200));



        TextView textView2 = new TextView(context);

        textView2.setBackgroundColor(Color.BLUE);

        textView2.setTextSize(20);

        textView2.setText("Touchpad Debug View 2");

        textView2.setGravity(Gravity.CENTER);

        textView2.setTextColor(Color.WHITE);

        textView2.setLayoutParams(new LayoutParams(1000, 200));



        addView(textView1);

        addView(textView2);

    }



    public int getTouchpadId() {

        return mTouchpadId;

    }

}

services/core/java/com/android/server/input/debug/TouchpadDebugViewController.java

0 → 100644
+125 −0
Original line number Diff line number Diff line 
/*

 * Copyright 2024 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 com.android.server.input.debug;



import android.annotation.Nullable;

import android.content.Context;

import android.graphics.PixelFormat;

import android.hardware.display.DisplayManager;

import android.hardware.input.InputManager;

import android.os.Handler;

import android.os.Looper;

import android.util.Slog;

import android.view.Display;

import android.view.Gravity;

import android.view.InputDevice;

import android.view.WindowManager;



import java.util.Objects;



public class TouchpadDebugViewController {



    private static final String TAG = "TouchpadDebugViewController";



    private final Context mContext;

    private final Handler mHandler;

    @Nullable

    private TouchpadDebugView mTouchpadDebugView;



    public TouchpadDebugViewController(Context context, Looper looper) {

        final DisplayManager displayManager = Objects.requireNonNull(

                context.getSystemService(DisplayManager.class));

        final Display defaultDisplay = displayManager.getDisplay(Display.DEFAULT_DISPLAY);

        mContext = context.createDisplayContext(defaultDisplay);

        mHandler = new Handler(looper);

    }



    public void systemRunning() {

        final InputManager inputManager = Objects.requireNonNull(

                mContext.getSystemService(InputManager.class));

        inputManager.registerInputDeviceListener(mInputDeviceListener, mHandler);

        for (int deviceId : inputManager.getInputDeviceIds()) {

            mInputDeviceListener.onInputDeviceAdded(deviceId);

        }

    }



    private final InputManager.InputDeviceListener mInputDeviceListener =

            new InputManager.InputDeviceListener() {

                @Override

                public void onInputDeviceAdded(int deviceId) {

                    final InputManager inputManager = Objects.requireNonNull(

                            mContext.getSystemService(InputManager.class));

                    InputDevice inputDevice = inputManager.getInputDevice(deviceId);



                    if (Objects.requireNonNull(inputDevice).supportsSource(

                            InputDevice.SOURCE_TOUCHPAD | InputDevice.SOURCE_MOUSE)) {

                        showDebugView(deviceId);

                    }

                }



                @Override

                public void onInputDeviceRemoved(int deviceId) {

                    hideDebugView(deviceId);

                }



                @Override

                public void onInputDeviceChanged(int deviceId) {

                }

            };



    private void showDebugView(int touchpadId) {

        if (mTouchpadDebugView != null) {

            return;

        }

        final WindowManager wm = Objects.requireNonNull(

                mContext.getSystemService(WindowManager.class));



        mTouchpadDebugView = new TouchpadDebugView(mContext, touchpadId);



        final WindowManager.LayoutParams lp = new WindowManager.LayoutParams();

        lp.type = WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY;

        lp.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE

                | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;

        lp.privateFlags |= WindowManager.LayoutParams.SYSTEM_FLAG_SHOW_FOR_ALL_USERS;

        lp.setFitInsetsTypes(0);

        lp.layoutInDisplayCutoutMode =

                WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_ALWAYS;

        lp.format = PixelFormat.TRANSLUCENT;

        lp.setTitle("TouchpadDebugView - display " + mContext.getDisplayId());

        lp.inputFeatures |= WindowManager.LayoutParams.INPUT_FEATURE_NO_INPUT_CHANNEL;



        lp.x = 40;

        lp.y = 100;

        lp.width = WindowManager.LayoutParams.WRAP_CONTENT;

        lp.height = WindowManager.LayoutParams.WRAP_CONTENT;

        lp.gravity = Gravity.TOP | Gravity.LEFT;



        wm.addView(mTouchpadDebugView, lp);

        Slog.d(TAG, "Touchpad debug view created.");

    }



    private void hideDebugView(int touchpadId) {

        if (mTouchpadDebugView == null || mTouchpadDebugView.getTouchpadId() != touchpadId) {

            return;

        }

        final WindowManager wm = Objects.requireNonNull(

                mContext.getSystemService(WindowManager.class));

        wm.removeView(mTouchpadDebugView);

        mTouchpadDebugView = null;

        Slog.d(TAG, "Touchpad debug view removed.");

    }

}
 
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