| /* |
| * Copyright (C) 2013 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.keyguard; |
| |
| import static android.view.Display.DEFAULT_DISPLAY; |
| |
| import android.app.Presentation; |
| import android.content.Context; |
| import android.graphics.Point; |
| import android.hardware.display.DisplayManager; |
| import android.media.MediaRouter; |
| import android.media.MediaRouter.RouteInfo; |
| import android.os.Bundle; |
| import android.util.Log; |
| import android.util.SparseArray; |
| import android.view.Display; |
| import android.view.DisplayInfo; |
| import android.view.View; |
| import android.view.WindowManager; |
| |
| // TODO(multi-display): Support multiple external displays |
| public class KeyguardDisplayManager { |
| protected static final String TAG = "KeyguardDisplayManager"; |
| private static boolean DEBUG = KeyguardConstants.DEBUG; |
| |
| private final MediaRouter mMediaRouter; |
| private final DisplayManager mDisplayService; |
| private final Context mContext; |
| |
| private boolean mShowing; |
| private final DisplayInfo mTmpDisplayInfo = new DisplayInfo(); |
| |
| private final SparseArray<Presentation> mPresentations = new SparseArray<>(); |
| |
| private final DisplayManager.DisplayListener mDisplayListener = |
| new DisplayManager.DisplayListener() { |
| |
| @Override |
| public void onDisplayAdded(int displayId) { |
| final Display display = mDisplayService.getDisplay(displayId); |
| if (mShowing) { |
| showPresentation(display); |
| } |
| } |
| |
| @Override |
| public void onDisplayChanged(int displayId) { |
| if (displayId == DEFAULT_DISPLAY) return; |
| final Display display = mDisplayService.getDisplay(displayId); |
| if (display != null && mShowing) { |
| final Presentation presentation = mPresentations.get(displayId); |
| if (presentation != null && !presentation.getDisplay().equals(display)) { |
| hidePresentation(displayId); |
| showPresentation(display); |
| } |
| } |
| } |
| |
| @Override |
| public void onDisplayRemoved(int displayId) { |
| hidePresentation(displayId); |
| } |
| }; |
| |
| public KeyguardDisplayManager(Context context) { |
| mContext = context; |
| mMediaRouter = mContext.getSystemService(MediaRouter.class); |
| mDisplayService = mContext.getSystemService(DisplayManager.class); |
| mDisplayService.registerDisplayListener(mDisplayListener, null /* handler */); |
| } |
| |
| private boolean isKeyguardShowable(Display display) { |
| if (display == null) { |
| if (DEBUG) Log.i(TAG, "Cannot show Keyguard on null display"); |
| return false; |
| } |
| if (display.getDisplayId() == DEFAULT_DISPLAY) { |
| if (DEBUG) Log.i(TAG, "Do not show KeyguardPresentation on the default display"); |
| return false; |
| } |
| display.getDisplayInfo(mTmpDisplayInfo); |
| if ((mTmpDisplayInfo.flags & Display.FLAG_PRIVATE) != 0) { |
| if (DEBUG) Log.i(TAG, "Do not show KeyguardPresentation on a private display"); |
| return false; |
| } |
| return true; |
| } |
| /** |
| * @param display The display to show the presentation on. |
| * @return {@code true} if a presentation was added. |
| * {@code false} if the presentation cannot be added on that display or the presentation |
| * was already there. |
| */ |
| private boolean showPresentation(Display display) { |
| if (!isKeyguardShowable(display)) return false; |
| if (DEBUG) Log.i(TAG, "Keyguard enabled on display: " + display); |
| final int displayId = display.getDisplayId(); |
| Presentation presentation = mPresentations.get(displayId); |
| if (presentation == null) { |
| presentation = new KeyguardPresentation(mContext, display); |
| presentation.setOnDismissListener(dialog -> { |
| if (null != mPresentations.get(displayId)) { |
| mPresentations.remove(displayId); |
| } |
| }); |
| try { |
| presentation.show(); |
| } catch (WindowManager.InvalidDisplayException ex) { |
| Log.w(TAG, "Invalid display:", ex); |
| presentation = null; |
| } |
| if (presentation != null) { |
| mPresentations.append(displayId, presentation); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * @param displayId The id of the display to hide the presentation off. |
| */ |
| private void hidePresentation(int displayId) { |
| final Presentation presentation = mPresentations.get(displayId); |
| if (presentation != null) { |
| presentation.dismiss(); |
| mPresentations.remove(displayId); |
| } |
| } |
| |
| public void show() { |
| if (!mShowing) { |
| if (DEBUG) Log.v(TAG, "show"); |
| mMediaRouter.addCallback(MediaRouter.ROUTE_TYPE_REMOTE_DISPLAY, |
| mMediaRouterCallback, MediaRouter.CALLBACK_FLAG_PASSIVE_DISCOVERY); |
| updateDisplays(true /* showing */); |
| } |
| mShowing = true; |
| } |
| |
| public void hide() { |
| if (mShowing) { |
| if (DEBUG) Log.v(TAG, "hide"); |
| mMediaRouter.removeCallback(mMediaRouterCallback); |
| updateDisplays(false /* showing */); |
| } |
| mShowing = false; |
| } |
| |
| private final MediaRouter.SimpleCallback mMediaRouterCallback = |
| new MediaRouter.SimpleCallback() { |
| @Override |
| public void onRouteSelected(MediaRouter router, int type, RouteInfo info) { |
| if (DEBUG) Log.d(TAG, "onRouteSelected: type=" + type + ", info=" + info); |
| updateDisplays(mShowing); |
| } |
| |
| @Override |
| public void onRouteUnselected(MediaRouter router, int type, RouteInfo info) { |
| if (DEBUG) Log.d(TAG, "onRouteUnselected: type=" + type + ", info=" + info); |
| updateDisplays(mShowing); |
| } |
| |
| @Override |
| public void onRoutePresentationDisplayChanged(MediaRouter router, RouteInfo info) { |
| if (DEBUG) Log.d(TAG, "onRoutePresentationDisplayChanged: info=" + info); |
| updateDisplays(mShowing); |
| } |
| }; |
| |
| protected boolean updateDisplays(boolean showing) { |
| boolean changed = false; |
| if (showing) { |
| final Display[] displays = mDisplayService.getDisplays(); |
| for (Display display : displays) { |
| changed |= showPresentation(display); |
| } |
| } else { |
| changed = mPresentations.size() > 0; |
| for (int i = mPresentations.size() - 1; i >= 0; i--) { |
| mPresentations.valueAt(i).dismiss(); |
| } |
| mPresentations.clear(); |
| } |
| return changed; |
| } |
| |
| private final static class KeyguardPresentation extends Presentation { |
| private static final int VIDEO_SAFE_REGION = 80; // Percentage of display width & height |
| private static final int MOVE_CLOCK_TIMEOUT = 10000; // 10s |
| private View mClock; |
| private int mUsableWidth; |
| private int mUsableHeight; |
| private int mMarginTop; |
| private int mMarginLeft; |
| Runnable mMoveTextRunnable = new Runnable() { |
| @Override |
| public void run() { |
| int x = mMarginLeft + (int) (Math.random() * (mUsableWidth - mClock.getWidth())); |
| int y = mMarginTop + (int) (Math.random() * (mUsableHeight - mClock.getHeight())); |
| mClock.setTranslationX(x); |
| mClock.setTranslationY(y); |
| mClock.postDelayed(mMoveTextRunnable, MOVE_CLOCK_TIMEOUT); |
| } |
| }; |
| |
| KeyguardPresentation(Context context, Display display) { |
| super(context, display, R.style.keyguard_presentation_theme); |
| getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG); |
| setCancelable(false); |
| } |
| |
| @Override |
| public void onDetachedFromWindow() { |
| mClock.removeCallbacks(mMoveTextRunnable); |
| } |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| Point p = new Point(); |
| getDisplay().getSize(p); |
| mUsableWidth = VIDEO_SAFE_REGION * p.x/100; |
| mUsableHeight = VIDEO_SAFE_REGION * p.y/100; |
| mMarginLeft = (100 - VIDEO_SAFE_REGION) * p.x / 200; |
| mMarginTop = (100 - VIDEO_SAFE_REGION) * p.y / 200; |
| |
| setContentView(R.layout.keyguard_presentation); |
| mClock = findViewById(R.id.clock); |
| |
| // Avoid screen burn in |
| mClock.post(mMoveTextRunnable); |
| } |
| } |
| } |