Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 1 | /** |
| 2 | * Copyright (C) 2019 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 | package com.android.systemui.statusbar.phone; |
| 17 | |
Mady Mellor | 390bff4 | 2019-04-05 15:09:01 -0700 | [diff] [blame^] | 18 | import static android.view.Display.INVALID_DISPLAY; |
| 19 | |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 20 | import android.content.Context; |
| 21 | import android.content.pm.ParceledListSlice; |
Matthew Ng | 682ad7a | 2019-04-09 15:48:01 -0700 | [diff] [blame] | 22 | import android.content.res.Resources; |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 23 | import android.graphics.PixelFormat; |
| 24 | import android.graphics.Point; |
| 25 | import android.graphics.PointF; |
| 26 | import android.graphics.Rect; |
| 27 | import android.graphics.Region; |
| 28 | import android.hardware.display.DisplayManager; |
| 29 | import android.hardware.display.DisplayManager.DisplayListener; |
| 30 | import android.hardware.input.InputManager; |
| 31 | import android.os.Looper; |
| 32 | import android.os.RemoteException; |
| 33 | import android.os.SystemClock; |
| 34 | import android.util.Log; |
| 35 | import android.util.MathUtils; |
| 36 | import android.view.Choreographer; |
| 37 | import android.view.Gravity; |
| 38 | import android.view.IPinnedStackController; |
| 39 | import android.view.IPinnedStackListener; |
| 40 | import android.view.ISystemGestureExclusionListener; |
| 41 | import android.view.InputDevice; |
| 42 | import android.view.InputEvent; |
| 43 | import android.view.InputMonitor; |
| 44 | import android.view.KeyCharacterMap; |
| 45 | import android.view.KeyEvent; |
| 46 | import android.view.MotionEvent; |
| 47 | import android.view.ViewConfiguration; |
| 48 | import android.view.WindowManager; |
| 49 | import android.view.WindowManagerGlobal; |
| 50 | |
Mady Mellor | 390bff4 | 2019-04-05 15:09:01 -0700 | [diff] [blame^] | 51 | import com.android.systemui.Dependency; |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 52 | import com.android.systemui.R; |
Mady Mellor | 390bff4 | 2019-04-05 15:09:01 -0700 | [diff] [blame^] | 53 | import com.android.systemui.bubbles.BubbleController; |
Winson Chung | 04ff8bda | 2019-04-02 15:08:59 -0700 | [diff] [blame] | 54 | import com.android.systemui.recents.OverviewProxyService; |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 55 | import com.android.systemui.shared.system.InputChannelCompat.InputEventReceiver; |
| 56 | import com.android.systemui.shared.system.QuickStepContract; |
| 57 | import com.android.systemui.shared.system.WindowManagerWrapper; |
| 58 | |
| 59 | import java.util.concurrent.Executor; |
| 60 | |
| 61 | /** |
| 62 | * Utility class to handle edge swipes for back gesture |
| 63 | */ |
| 64 | public class EdgeBackGestureHandler implements DisplayListener { |
| 65 | |
| 66 | private static final String TAG = "EdgeBackGestureHandler"; |
| 67 | |
| 68 | private final IPinnedStackListener.Stub mImeChangedListener = new IPinnedStackListener.Stub() { |
| 69 | @Override |
| 70 | public void onListenerRegistered(IPinnedStackController controller) { |
| 71 | } |
| 72 | |
| 73 | @Override |
| 74 | public void onImeVisibilityChanged(boolean imeVisible, int imeHeight) { |
| 75 | // No need to thread jump, assignments are atomic |
| 76 | mImeHeight = imeVisible ? imeHeight : 0; |
| 77 | // TODO: Probably cancel any existing gesture |
| 78 | } |
| 79 | |
| 80 | @Override |
| 81 | public void onShelfVisibilityChanged(boolean shelfVisible, int shelfHeight) { |
| 82 | } |
| 83 | |
| 84 | @Override |
| 85 | public void onMinimizedStateChanged(boolean isMinimized) { |
| 86 | } |
| 87 | |
| 88 | @Override |
| 89 | public void onMovementBoundsChanged(Rect insetBounds, Rect normalBounds, |
| 90 | Rect animatingBounds, boolean fromImeAdjustment, boolean fromShelfAdjustment, |
| 91 | int displayRotation) { |
| 92 | } |
| 93 | |
| 94 | @Override |
| 95 | public void onActionsChanged(ParceledListSlice actions) { |
| 96 | } |
| 97 | }; |
| 98 | |
| 99 | private ISystemGestureExclusionListener mGestureExclusionListener = |
| 100 | new ISystemGestureExclusionListener.Stub() { |
| 101 | @Override |
| 102 | public void onSystemGestureExclusionChanged(int displayId, |
| 103 | Region systemGestureExclusion) { |
| 104 | if (displayId == mDisplayId) { |
| 105 | mMainExecutor.execute(() -> mExcludeRegion.set(systemGestureExclusion)); |
| 106 | } |
| 107 | } |
| 108 | }; |
| 109 | |
| 110 | private final Context mContext; |
Winson Chung | 04ff8bda | 2019-04-02 15:08:59 -0700 | [diff] [blame] | 111 | private final OverviewProxyService mOverviewProxyService; |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 112 | |
| 113 | private final Point mDisplaySize = new Point(); |
| 114 | private final int mDisplayId; |
| 115 | |
| 116 | private final Executor mMainExecutor; |
| 117 | |
| 118 | private final Region mExcludeRegion = new Region(); |
| 119 | // The edge width where touch down is allowed |
| 120 | private final int mEdgeWidth; |
| 121 | // The slop to distinguish between horizontal and vertical motion |
| 122 | private final float mTouchSlop; |
| 123 | // Minimum distance to move so that is can be considerd as a back swipe |
| 124 | private final float mSwipeThreshold; |
| 125 | |
| 126 | private final int mNavBarHeight; |
| 127 | |
| 128 | private final PointF mDownPoint = new PointF(); |
| 129 | private boolean mThresholdCrossed = false; |
| 130 | private boolean mIgnoreThisGesture = false; |
| 131 | private boolean mIsOnLeftEdge; |
| 132 | |
| 133 | private int mImeHeight = 0; |
| 134 | |
| 135 | private boolean mIsAttached; |
| 136 | private boolean mIsGesturalModeEnabled; |
| 137 | private boolean mIsEnabled; |
| 138 | |
| 139 | private InputMonitor mInputMonitor; |
| 140 | private InputEventReceiver mInputEventReceiver; |
| 141 | |
| 142 | private final WindowManager mWm; |
| 143 | |
| 144 | private NavigationBarEdgePanel mEdgePanel; |
| 145 | private WindowManager.LayoutParams mEdgePanelLp; |
| 146 | |
Winson Chung | 04ff8bda | 2019-04-02 15:08:59 -0700 | [diff] [blame] | 147 | public EdgeBackGestureHandler(Context context, OverviewProxyService overviewProxyService) { |
Matthew Ng | 682ad7a | 2019-04-09 15:48:01 -0700 | [diff] [blame] | 148 | final Resources res = context.getResources(); |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 149 | mContext = context; |
| 150 | mDisplayId = context.getDisplayId(); |
| 151 | mMainExecutor = context.getMainExecutor(); |
| 152 | mWm = context.getSystemService(WindowManager.class); |
Winson Chung | 04ff8bda | 2019-04-02 15:08:59 -0700 | [diff] [blame] | 153 | mOverviewProxyService = overviewProxyService; |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 154 | |
| 155 | mEdgeWidth = QuickStepContract.getEdgeSensitivityWidth(context); |
| 156 | mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop(); |
Matthew Ng | 682ad7a | 2019-04-09 15:48:01 -0700 | [diff] [blame] | 157 | mSwipeThreshold = res.getDimension(R.dimen.navigation_edge_action_drag_threshold); |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 158 | |
Matthew Ng | 682ad7a | 2019-04-09 15:48:01 -0700 | [diff] [blame] | 159 | mNavBarHeight = res.getDimensionPixelSize(R.dimen.navigation_bar_frame_height); |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 160 | } |
| 161 | |
| 162 | /** |
| 163 | * @see NavigationBarView#onAttachedToWindow() |
| 164 | */ |
| 165 | public void onNavBarAttached() { |
| 166 | mIsAttached = true; |
| 167 | onOverlaysChanged(); |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * @see NavigationBarView#onDetachedFromWindow() |
| 172 | */ |
| 173 | public void onNavBarDetached() { |
| 174 | mIsAttached = false; |
| 175 | updateIsEnabled(); |
| 176 | } |
| 177 | |
| 178 | /** |
| 179 | * Called when system overlays has changed |
| 180 | */ |
| 181 | public void onOverlaysChanged() { |
| 182 | mIsGesturalModeEnabled = QuickStepContract.isGesturalMode(mContext); |
| 183 | updateIsEnabled(); |
| 184 | } |
| 185 | |
| 186 | private void disposeInputChannel() { |
| 187 | if (mInputEventReceiver != null) { |
| 188 | mInputEventReceiver.dispose(); |
| 189 | mInputEventReceiver = null; |
| 190 | } |
| 191 | if (mInputMonitor != null) { |
| 192 | mInputMonitor.dispose(); |
| 193 | mInputMonitor = null; |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | private void updateIsEnabled() { |
| 198 | boolean isEnabled = mIsAttached && mIsGesturalModeEnabled; |
| 199 | if (isEnabled == mIsEnabled) { |
| 200 | return; |
| 201 | } |
| 202 | mIsEnabled = isEnabled; |
| 203 | disposeInputChannel(); |
| 204 | |
| 205 | if (mEdgePanel != null) { |
| 206 | mWm.removeView(mEdgePanel); |
| 207 | mEdgePanel = null; |
| 208 | } |
| 209 | |
| 210 | if (!mIsEnabled) { |
| 211 | WindowManagerWrapper.getInstance().removePinnedStackListener(mImeChangedListener); |
Sunny Goyal | 1904969 | 2019-04-08 11:56:07 -0700 | [diff] [blame] | 212 | mContext.getSystemService(DisplayManager.class).unregisterDisplayListener(this); |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 213 | |
| 214 | try { |
| 215 | WindowManagerGlobal.getWindowManagerService() |
| 216 | .unregisterSystemGestureExclusionListener( |
| 217 | mGestureExclusionListener, mDisplayId); |
| 218 | } catch (RemoteException e) { |
| 219 | Log.e(TAG, "Failed to unregister window manager callbacks", e); |
| 220 | } |
| 221 | |
| 222 | } else { |
| 223 | updateDisplaySize(); |
Sunny Goyal | 1904969 | 2019-04-08 11:56:07 -0700 | [diff] [blame] | 224 | mContext.getSystemService(DisplayManager.class).registerDisplayListener(this, |
| 225 | mContext.getMainThreadHandler()); |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 226 | |
| 227 | try { |
| 228 | WindowManagerWrapper.getInstance().addPinnedStackListener(mImeChangedListener); |
| 229 | WindowManagerGlobal.getWindowManagerService() |
| 230 | .registerSystemGestureExclusionListener( |
| 231 | mGestureExclusionListener, mDisplayId); |
| 232 | } catch (RemoteException e) { |
| 233 | Log.e(TAG, "Failed to register window manager callbacks", e); |
| 234 | } |
| 235 | |
| 236 | // Register input event receiver |
| 237 | mInputMonitor = InputManager.getInstance().monitorGestureInput( |
| 238 | "edge-swipe", mDisplayId); |
| 239 | mInputEventReceiver = new InputEventReceiver(mInputMonitor.getInputChannel(), |
| 240 | Looper.getMainLooper(), Choreographer.getMainThreadInstance(), |
| 241 | this::onInputEvent); |
| 242 | |
| 243 | // Add a nav bar panel window |
| 244 | mEdgePanel = new NavigationBarEdgePanel(mContext); |
| 245 | mEdgePanelLp = new WindowManager.LayoutParams( |
| 246 | mContext.getResources() |
| 247 | .getDimensionPixelSize(R.dimen.navigation_edge_panel_width), |
| 248 | mContext.getResources() |
| 249 | .getDimensionPixelSize(R.dimen.navigation_edge_panel_height), |
| 250 | WindowManager.LayoutParams.TYPE_NAVIGATION_BAR_PANEL, |
| 251 | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE |
| 252 | | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
| 253 | | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH |
| 254 | | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN, |
| 255 | PixelFormat.TRANSLUCENT); |
| 256 | mEdgePanelLp.setTitle(TAG + mDisplayId); |
| 257 | mEdgePanelLp.accessibilityTitle = mContext.getString(R.string.nav_bar_edge_panel); |
| 258 | mEdgePanelLp.windowAnimations = 0; |
| 259 | mEdgePanel.setLayoutParams(mEdgePanelLp); |
| 260 | mWm.addView(mEdgePanel, mEdgePanelLp); |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | private void onInputEvent(InputEvent ev) { |
| 265 | if (ev instanceof MotionEvent) { |
| 266 | onMotionEvent((MotionEvent) ev); |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | private boolean isWithinTouchRegion(int x, int y) { |
| 271 | if (y > (mDisplaySize.y - Math.max(mImeHeight, mNavBarHeight))) { |
| 272 | return false; |
| 273 | } |
| 274 | |
| 275 | if (x > mEdgeWidth && x < (mDisplaySize.x - mEdgeWidth)) { |
| 276 | return false; |
| 277 | } |
| 278 | return !mExcludeRegion.contains(x, y); |
| 279 | } |
| 280 | |
| 281 | private void onMotionEvent(MotionEvent ev) { |
| 282 | if (ev.getAction() == MotionEvent.ACTION_DOWN) { |
| 283 | // Verify if this is in within the touch region |
| 284 | mIgnoreThisGesture = !isWithinTouchRegion((int) ev.getX(), (int) ev.getY()); |
| 285 | if (!mIgnoreThisGesture) { |
| 286 | mIsOnLeftEdge = ev.getX() < mEdgeWidth; |
| 287 | mEdgePanelLp.gravity = mIsOnLeftEdge |
| 288 | ? (Gravity.LEFT | Gravity.TOP) |
| 289 | : (Gravity.RIGHT | Gravity.TOP); |
| 290 | mEdgePanel.setIsLeftPanel(mIsOnLeftEdge); |
| 291 | mEdgePanelLp.y = MathUtils.constrain( |
| 292 | (int) (ev.getY() - mEdgePanelLp.height / 2), |
| 293 | 0, mDisplaySize.y); |
| 294 | mWm.updateViewLayout(mEdgePanel, mEdgePanelLp); |
| 295 | |
| 296 | mDownPoint.set(ev.getX(), ev.getY()); |
| 297 | mThresholdCrossed = false; |
| 298 | mEdgePanel.handleTouch(ev); |
| 299 | } |
| 300 | } else if (!mIgnoreThisGesture) { |
| 301 | if (!mThresholdCrossed && ev.getAction() == MotionEvent.ACTION_MOVE) { |
| 302 | float dx = Math.abs(ev.getX() - mDownPoint.x); |
| 303 | float dy = Math.abs(ev.getY() - mDownPoint.y); |
| 304 | if (dy > dx && dy > mTouchSlop) { |
| 305 | // Send action cancel to reset all the touch events |
| 306 | mIgnoreThisGesture = true; |
| 307 | MotionEvent cancelEv = MotionEvent.obtain(ev); |
| 308 | cancelEv.setAction(MotionEvent.ACTION_CANCEL); |
| 309 | mEdgePanel.handleTouch(cancelEv); |
| 310 | cancelEv.recycle(); |
| 311 | return; |
| 312 | |
| 313 | } else if (dx > dy && dx > mTouchSlop) { |
| 314 | mThresholdCrossed = true; |
| 315 | // Capture inputs |
| 316 | mInputMonitor.pilferPointers(); |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | // forward touch |
| 321 | mEdgePanel.handleTouch(ev); |
| 322 | |
| 323 | if (ev.getAction() == MotionEvent.ACTION_UP) { |
| 324 | float xDiff = ev.getX() - mDownPoint.x; |
| 325 | boolean exceedsThreshold = mIsOnLeftEdge |
| 326 | ? (xDiff > mSwipeThreshold) : (-xDiff > mSwipeThreshold); |
Winson Chung | 04ff8bda | 2019-04-02 15:08:59 -0700 | [diff] [blame] | 327 | boolean performAction = exceedsThreshold |
| 328 | && Math.abs(xDiff) > Math.abs(ev.getY() - mDownPoint.y); |
| 329 | if (performAction) { |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 330 | // Perform back |
| 331 | sendEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_BACK); |
| 332 | sendEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_BACK); |
| 333 | } |
Winson Chung | 04ff8bda | 2019-04-02 15:08:59 -0700 | [diff] [blame] | 334 | mOverviewProxyService.notifyBackAction(performAction, (int) mDownPoint.x, |
| 335 | (int) mDownPoint.y, false /* isButton */, !mIsOnLeftEdge); |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 336 | } |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | @Override |
| 341 | public void onDisplayAdded(int displayId) { } |
| 342 | |
| 343 | @Override |
| 344 | public void onDisplayRemoved(int displayId) { } |
| 345 | |
| 346 | @Override |
| 347 | public void onDisplayChanged(int displayId) { |
| 348 | if (displayId == mDisplayId) { |
| 349 | updateDisplaySize(); |
| 350 | } |
| 351 | } |
| 352 | |
| 353 | private void updateDisplaySize() { |
| 354 | mContext.getSystemService(DisplayManager.class) |
Sunny Goyal | 1904969 | 2019-04-08 11:56:07 -0700 | [diff] [blame] | 355 | .getDisplay(mDisplayId) |
| 356 | .getRealSize(mDisplaySize); |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | private void sendEvent(int action, int code) { |
| 360 | long when = SystemClock.uptimeMillis(); |
| 361 | final KeyEvent ev = new KeyEvent(when, when, action, code, 0 /* repeat */, |
| 362 | 0 /* metaState */, KeyCharacterMap.VIRTUAL_KEYBOARD, 0 /* scancode */, |
| 363 | KeyEvent.FLAG_FROM_SYSTEM | KeyEvent.FLAG_VIRTUAL_HARD_KEY, |
| 364 | InputDevice.SOURCE_KEYBOARD); |
Mady Mellor | 390bff4 | 2019-04-05 15:09:01 -0700 | [diff] [blame^] | 365 | |
| 366 | // Bubble controller will give us a valid display id if it should get the back event |
| 367 | BubbleController bubbleController = Dependency.get(BubbleController.class); |
| 368 | int bubbleDisplayId = bubbleController.getExpandedDisplayId(mContext); |
| 369 | if (code == KeyEvent.KEYCODE_BACK && bubbleDisplayId != INVALID_DISPLAY) { |
| 370 | ev.setDisplayId(bubbleDisplayId); |
| 371 | } |
Sunny Goyal | a6a5812 | 2019-04-02 10:20:29 -0700 | [diff] [blame] | 372 | InputManager.getInstance().injectInputEvent(ev, InputManager.INJECT_INPUT_EVENT_MODE_ASYNC); |
| 373 | } |
| 374 | } |