Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.display; |
| 18 | |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 19 | import com.android.internal.util.DumpUtils; |
| 20 | |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 21 | import android.content.Context; |
| 22 | import android.graphics.SurfaceTexture; |
| 23 | import android.hardware.display.DisplayManager; |
| 24 | import android.util.Slog; |
| 25 | import android.view.Display; |
| 26 | import android.view.DisplayInfo; |
| 27 | import android.view.GestureDetector; |
| 28 | import android.view.Gravity; |
| 29 | import android.view.LayoutInflater; |
| 30 | import android.view.MotionEvent; |
| 31 | import android.view.ScaleGestureDetector; |
| 32 | import android.view.TextureView; |
John Reck | a896306 | 2017-06-14 10:47:50 -0700 | [diff] [blame] | 33 | import android.view.ThreadedRenderer; |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 34 | import android.view.View; |
| 35 | import android.view.WindowManager; |
| 36 | import android.view.TextureView.SurfaceTextureListener; |
| 37 | import android.widget.TextView; |
| 38 | |
| 39 | import java.io.PrintWriter; |
| 40 | |
| 41 | /** |
| 42 | * Manages an overlay window on behalf of {@link OverlayDisplayAdapter}. |
| 43 | * <p> |
| 44 | * This object must only be accessed on the UI thread. |
| 45 | * No locks are held by this object and locks must not be held while making called into it. |
| 46 | * </p> |
| 47 | */ |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 48 | final class OverlayDisplayWindow implements DumpUtils.Dump { |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 49 | private static final String TAG = "OverlayDisplayWindow"; |
| 50 | private static final boolean DEBUG = false; |
| 51 | |
| 52 | private final float INITIAL_SCALE = 0.5f; |
| 53 | private final float MIN_SCALE = 0.3f; |
| 54 | private final float MAX_SCALE = 1.0f; |
| 55 | private final float WINDOW_ALPHA = 0.8f; |
| 56 | |
| 57 | // When true, disables support for moving and resizing the overlay. |
| 58 | // The window is made non-touchable, which makes it possible to |
| 59 | // directly interact with the content underneath. |
| 60 | private final boolean DISABLE_MOVE_AND_RESIZE = false; |
| 61 | |
| 62 | private final Context mContext; |
| 63 | private final String mName; |
P.Y. Laligand | af9c52e | 2015-05-06 14:50:52 -0700 | [diff] [blame] | 64 | private int mWidth; |
| 65 | private int mHeight; |
| 66 | private int mDensityDpi; |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 67 | private final int mGravity; |
Jeff Brown | 040f44d | 2013-08-02 18:14:46 -0700 | [diff] [blame] | 68 | private final boolean mSecure; |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 69 | private final Listener mListener; |
Jeff Brown | 040f44d | 2013-08-02 18:14:46 -0700 | [diff] [blame] | 70 | private String mTitle; |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 71 | |
| 72 | private final DisplayManager mDisplayManager; |
| 73 | private final WindowManager mWindowManager; |
| 74 | |
| 75 | |
| 76 | private final Display mDefaultDisplay; |
| 77 | private final DisplayInfo mDefaultDisplayInfo = new DisplayInfo(); |
| 78 | |
| 79 | private View mWindowContent; |
| 80 | private WindowManager.LayoutParams mWindowParams; |
| 81 | private TextureView mTextureView; |
| 82 | private TextView mTitleTextView; |
| 83 | |
| 84 | private GestureDetector mGestureDetector; |
| 85 | private ScaleGestureDetector mScaleGestureDetector; |
| 86 | |
| 87 | private boolean mWindowVisible; |
| 88 | private int mWindowX; |
| 89 | private int mWindowY; |
| 90 | private float mWindowScale; |
| 91 | |
| 92 | private float mLiveTranslationX; |
| 93 | private float mLiveTranslationY; |
| 94 | private float mLiveScale = 1.0f; |
| 95 | |
| 96 | public OverlayDisplayWindow(Context context, String name, |
Jeff Brown | 040f44d | 2013-08-02 18:14:46 -0700 | [diff] [blame] | 97 | int width, int height, int densityDpi, int gravity, boolean secure, |
| 98 | Listener listener) { |
John Reck | a896306 | 2017-06-14 10:47:50 -0700 | [diff] [blame] | 99 | // Workaround device freeze (b/38372997) |
| 100 | ThreadedRenderer.disableVsync(); |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 101 | mContext = context; |
| 102 | mName = name; |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 103 | mGravity = gravity; |
Jeff Brown | 040f44d | 2013-08-02 18:14:46 -0700 | [diff] [blame] | 104 | mSecure = secure; |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 105 | mListener = listener; |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 106 | |
| 107 | mDisplayManager = (DisplayManager)context.getSystemService( |
| 108 | Context.DISPLAY_SERVICE); |
| 109 | mWindowManager = (WindowManager)context.getSystemService( |
| 110 | Context.WINDOW_SERVICE); |
| 111 | |
Andrii Kulian | e57f2dc | 2020-01-26 20:59:07 -0800 | [diff] [blame] | 112 | // TODO(b/148458868): Support multi-display |
| 113 | mDefaultDisplay = mContext.getDisplay(); |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 114 | updateDefaultDisplayInfo(); |
| 115 | |
P.Y. Laligand | af9c52e | 2015-05-06 14:50:52 -0700 | [diff] [blame] | 116 | resize(width, height, densityDpi, false /* doLayout */); |
| 117 | |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 118 | createWindow(); |
| 119 | } |
| 120 | |
| 121 | public void show() { |
| 122 | if (!mWindowVisible) { |
| 123 | mDisplayManager.registerDisplayListener(mDisplayListener, null); |
| 124 | if (!updateDefaultDisplayInfo()) { |
| 125 | mDisplayManager.unregisterDisplayListener(mDisplayListener); |
| 126 | return; |
| 127 | } |
| 128 | |
| 129 | clearLiveState(); |
| 130 | updateWindowParams(); |
| 131 | mWindowManager.addView(mWindowContent, mWindowParams); |
| 132 | mWindowVisible = true; |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | public void dismiss() { |
| 137 | if (mWindowVisible) { |
| 138 | mDisplayManager.unregisterDisplayListener(mDisplayListener); |
| 139 | mWindowManager.removeView(mWindowContent); |
| 140 | mWindowVisible = false; |
| 141 | } |
| 142 | } |
| 143 | |
P.Y. Laligand | af9c52e | 2015-05-06 14:50:52 -0700 | [diff] [blame] | 144 | public void resize(int width, int height, int densityDpi) { |
| 145 | resize(width, height, densityDpi, true /* doLayout */); |
| 146 | } |
| 147 | |
| 148 | private void resize(int width, int height, int densityDpi, boolean doLayout) { |
| 149 | mWidth = width; |
| 150 | mHeight = height; |
| 151 | mDensityDpi = densityDpi; |
| 152 | mTitle = mContext.getResources().getString( |
| 153 | com.android.internal.R.string.display_manager_overlay_display_title, |
| 154 | mName, mWidth, mHeight, mDensityDpi); |
| 155 | if (mSecure) { |
| 156 | mTitle += mContext.getResources().getString( |
| 157 | com.android.internal.R.string.display_manager_overlay_display_secure_suffix); |
| 158 | } |
| 159 | if (doLayout) { |
| 160 | relayout(); |
| 161 | } |
| 162 | } |
| 163 | |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 164 | public void relayout() { |
| 165 | if (mWindowVisible) { |
| 166 | updateWindowParams(); |
| 167 | mWindowManager.updateViewLayout(mWindowContent, mWindowParams); |
| 168 | } |
| 169 | } |
| 170 | |
Craig Mautner | d5523dc | 2012-10-02 13:49:22 -0700 | [diff] [blame] | 171 | @Override |
Dianne Hackborn | ae6688b | 2015-02-11 17:02:41 -0800 | [diff] [blame] | 172 | public void dump(PrintWriter pw, String prefix) { |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 173 | pw.println("mWindowVisible=" + mWindowVisible); |
| 174 | pw.println("mWindowX=" + mWindowX); |
| 175 | pw.println("mWindowY=" + mWindowY); |
| 176 | pw.println("mWindowScale=" + mWindowScale); |
| 177 | pw.println("mWindowParams=" + mWindowParams); |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 178 | if (mTextureView != null) { |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 179 | pw.println("mTextureView.getScaleX()=" + mTextureView.getScaleX()); |
| 180 | pw.println("mTextureView.getScaleY()=" + mTextureView.getScaleY()); |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 181 | } |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 182 | pw.println("mLiveTranslationX=" + mLiveTranslationX); |
| 183 | pw.println("mLiveTranslationY=" + mLiveTranslationY); |
| 184 | pw.println("mLiveScale=" + mLiveScale); |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 185 | } |
| 186 | |
| 187 | private boolean updateDefaultDisplayInfo() { |
| 188 | if (!mDefaultDisplay.getDisplayInfo(mDefaultDisplayInfo)) { |
| 189 | Slog.w(TAG, "Cannot show overlay display because there is no " |
| 190 | + "default display upon which to show it."); |
| 191 | return false; |
| 192 | } |
| 193 | return true; |
| 194 | } |
| 195 | |
| 196 | private void createWindow() { |
| 197 | LayoutInflater inflater = LayoutInflater.from(mContext); |
| 198 | |
| 199 | mWindowContent = inflater.inflate( |
| 200 | com.android.internal.R.layout.overlay_display_window, null); |
| 201 | mWindowContent.setOnTouchListener(mOnTouchListener); |
| 202 | |
| 203 | mTextureView = (TextureView)mWindowContent.findViewById( |
| 204 | com.android.internal.R.id.overlay_display_window_texture); |
| 205 | mTextureView.setPivotX(0); |
| 206 | mTextureView.setPivotY(0); |
| 207 | mTextureView.getLayoutParams().width = mWidth; |
| 208 | mTextureView.getLayoutParams().height = mHeight; |
| 209 | mTextureView.setOpaque(false); |
| 210 | mTextureView.setSurfaceTextureListener(mSurfaceTextureListener); |
| 211 | |
| 212 | mTitleTextView = (TextView)mWindowContent.findViewById( |
| 213 | com.android.internal.R.id.overlay_display_window_title); |
| 214 | mTitleTextView.setText(mTitle); |
| 215 | |
| 216 | mWindowParams = new WindowManager.LayoutParams( |
| 217 | WindowManager.LayoutParams.TYPE_DISPLAY_OVERLAY); |
| 218 | mWindowParams.flags |= WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN |
| 219 | | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS |
| 220 | | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
| 221 | | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
| 222 | | WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED; |
Jeff Brown | 040f44d | 2013-08-02 18:14:46 -0700 | [diff] [blame] | 223 | if (mSecure) { |
| 224 | mWindowParams.flags |= WindowManager.LayoutParams.FLAG_SECURE; |
| 225 | } |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 226 | if (DISABLE_MOVE_AND_RESIZE) { |
| 227 | mWindowParams.flags |= WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE; |
| 228 | } |
| 229 | mWindowParams.privateFlags |= |
| 230 | WindowManager.LayoutParams.PRIVATE_FLAG_FORCE_HARDWARE_ACCELERATED; |
| 231 | mWindowParams.alpha = WINDOW_ALPHA; |
| 232 | mWindowParams.gravity = Gravity.TOP | Gravity.LEFT; |
| 233 | mWindowParams.setTitle(mTitle); |
| 234 | |
| 235 | mGestureDetector = new GestureDetector(mContext, mOnGestureListener); |
| 236 | mScaleGestureDetector = new ScaleGestureDetector(mContext, mOnScaleGestureListener); |
| 237 | |
| 238 | // Set the initial position and scale. |
| 239 | // The position and scale will be clamped when the display is first shown. |
| 240 | mWindowX = (mGravity & Gravity.LEFT) == Gravity.LEFT ? |
| 241 | 0 : mDefaultDisplayInfo.logicalWidth; |
| 242 | mWindowY = (mGravity & Gravity.TOP) == Gravity.TOP ? |
| 243 | 0 : mDefaultDisplayInfo.logicalHeight; |
| 244 | mWindowScale = INITIAL_SCALE; |
| 245 | } |
| 246 | |
| 247 | private void updateWindowParams() { |
| 248 | float scale = mWindowScale * mLiveScale; |
| 249 | scale = Math.min(scale, (float)mDefaultDisplayInfo.logicalWidth / mWidth); |
| 250 | scale = Math.min(scale, (float)mDefaultDisplayInfo.logicalHeight / mHeight); |
| 251 | scale = Math.max(MIN_SCALE, Math.min(MAX_SCALE, scale)); |
| 252 | |
| 253 | float offsetScale = (scale / mWindowScale - 1.0f) * 0.5f; |
| 254 | int width = (int)(mWidth * scale); |
| 255 | int height = (int)(mHeight * scale); |
| 256 | int x = (int)(mWindowX + mLiveTranslationX - width * offsetScale); |
| 257 | int y = (int)(mWindowY + mLiveTranslationY - height * offsetScale); |
| 258 | x = Math.max(0, Math.min(x, mDefaultDisplayInfo.logicalWidth - width)); |
| 259 | y = Math.max(0, Math.min(y, mDefaultDisplayInfo.logicalHeight - height)); |
| 260 | |
| 261 | if (DEBUG) { |
| 262 | Slog.d(TAG, "updateWindowParams: scale=" + scale |
| 263 | + ", offsetScale=" + offsetScale |
| 264 | + ", x=" + x + ", y=" + y |
| 265 | + ", width=" + width + ", height=" + height); |
| 266 | } |
| 267 | |
| 268 | mTextureView.setScaleX(scale); |
| 269 | mTextureView.setScaleY(scale); |
| 270 | |
| 271 | mWindowParams.x = x; |
| 272 | mWindowParams.y = y; |
| 273 | mWindowParams.width = width; |
| 274 | mWindowParams.height = height; |
| 275 | } |
| 276 | |
| 277 | private void saveWindowParams() { |
| 278 | mWindowX = mWindowParams.x; |
| 279 | mWindowY = mWindowParams.y; |
| 280 | mWindowScale = mTextureView.getScaleX(); |
| 281 | clearLiveState(); |
| 282 | } |
| 283 | |
| 284 | private void clearLiveState() { |
| 285 | mLiveTranslationX = 0f; |
| 286 | mLiveTranslationY = 0f; |
| 287 | mLiveScale = 1.0f; |
| 288 | } |
| 289 | |
| 290 | private final DisplayManager.DisplayListener mDisplayListener = |
| 291 | new DisplayManager.DisplayListener() { |
| 292 | @Override |
| 293 | public void onDisplayAdded(int displayId) { |
| 294 | } |
| 295 | |
| 296 | @Override |
| 297 | public void onDisplayChanged(int displayId) { |
| 298 | if (displayId == mDefaultDisplay.getDisplayId()) { |
| 299 | if (updateDefaultDisplayInfo()) { |
| 300 | relayout(); |
Jeff Brown | 037c33e | 2014-04-09 00:31:55 -0700 | [diff] [blame] | 301 | mListener.onStateChanged(mDefaultDisplayInfo.state); |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 302 | } else { |
| 303 | dismiss(); |
| 304 | } |
| 305 | } |
| 306 | } |
| 307 | |
| 308 | @Override |
| 309 | public void onDisplayRemoved(int displayId) { |
| 310 | if (displayId == mDefaultDisplay.getDisplayId()) { |
| 311 | dismiss(); |
| 312 | } |
| 313 | } |
| 314 | }; |
| 315 | |
| 316 | private final SurfaceTextureListener mSurfaceTextureListener = |
| 317 | new SurfaceTextureListener() { |
| 318 | @Override |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 319 | public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, |
| 320 | int width, int height) { |
P.Y. Laligand | 5c7773d | 2015-05-04 13:30:58 -0700 | [diff] [blame] | 321 | mListener.onWindowCreated(surfaceTexture, |
| 322 | mDefaultDisplayInfo.getMode().getRefreshRate(), |
Andy McFadden | e8b1aeb | 2014-06-13 14:05:40 -0700 | [diff] [blame] | 323 | mDefaultDisplayInfo.presentationDeadlineNanos, mDefaultDisplayInfo.state); |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 324 | } |
| 325 | |
| 326 | @Override |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 327 | public boolean onSurfaceTextureDestroyed(SurfaceTexture surfaceTexture) { |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 328 | mListener.onWindowDestroyed(); |
| 329 | return true; |
| 330 | } |
| 331 | |
| 332 | @Override |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 333 | public void onSurfaceTextureSizeChanged(SurfaceTexture surfaceTexture, |
| 334 | int width, int height) { |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | @Override |
Jeff Brown | cbad976 | 2012-09-04 21:57:59 -0700 | [diff] [blame] | 338 | public void onSurfaceTextureUpdated(SurfaceTexture surfaceTexture) { |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 339 | } |
| 340 | }; |
| 341 | |
| 342 | private final View.OnTouchListener mOnTouchListener = new View.OnTouchListener() { |
| 343 | @Override |
| 344 | public boolean onTouch(View view, MotionEvent event) { |
| 345 | // Work in screen coordinates. |
| 346 | final float oldX = event.getX(); |
| 347 | final float oldY = event.getY(); |
| 348 | event.setLocation(event.getRawX(), event.getRawY()); |
| 349 | |
| 350 | mGestureDetector.onTouchEvent(event); |
| 351 | mScaleGestureDetector.onTouchEvent(event); |
| 352 | |
| 353 | switch (event.getActionMasked()) { |
| 354 | case MotionEvent.ACTION_UP: |
| 355 | case MotionEvent.ACTION_CANCEL: |
| 356 | saveWindowParams(); |
| 357 | break; |
| 358 | } |
| 359 | |
| 360 | // Revert to window coordinates. |
| 361 | event.setLocation(oldX, oldY); |
| 362 | return true; |
| 363 | } |
| 364 | }; |
| 365 | |
| 366 | private final GestureDetector.OnGestureListener mOnGestureListener = |
| 367 | new GestureDetector.SimpleOnGestureListener() { |
| 368 | @Override |
| 369 | public boolean onScroll(MotionEvent e1, MotionEvent e2, |
| 370 | float distanceX, float distanceY) { |
| 371 | mLiveTranslationX -= distanceX; |
| 372 | mLiveTranslationY -= distanceY; |
| 373 | relayout(); |
| 374 | return true; |
| 375 | } |
| 376 | }; |
| 377 | |
| 378 | private final ScaleGestureDetector.OnScaleGestureListener mOnScaleGestureListener = |
| 379 | new ScaleGestureDetector.SimpleOnScaleGestureListener() { |
| 380 | @Override |
| 381 | public boolean onScale(ScaleGestureDetector detector) { |
| 382 | mLiveScale *= detector.getScaleFactor(); |
| 383 | relayout(); |
| 384 | return true; |
| 385 | } |
| 386 | }; |
| 387 | |
| 388 | /** |
| 389 | * Watches for significant changes in the overlay display window lifecycle. |
| 390 | */ |
| 391 | public interface Listener { |
Jeff Brown | 037c33e | 2014-04-09 00:31:55 -0700 | [diff] [blame] | 392 | public void onWindowCreated(SurfaceTexture surfaceTexture, |
Andy McFadden | e8b1aeb | 2014-06-13 14:05:40 -0700 | [diff] [blame] | 393 | float refreshRate, long presentationDeadlineNanos, int state); |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 394 | public void onWindowDestroyed(); |
Jeff Brown | 037c33e | 2014-04-09 00:31:55 -0700 | [diff] [blame] | 395 | public void onStateChanged(int state); |
Jeff Brown | 4ed8fe7 | 2012-08-30 18:18:29 -0700 | [diff] [blame] | 396 | } |
P.Y. Laligand | 5c7773d | 2015-05-04 13:30:58 -0700 | [diff] [blame] | 397 | } |