| /* |
| * Copyright 2020 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 androidx.window.extensions; |
| |
| import static android.view.Display.INVALID_DISPLAY; |
| import static android.view.Surface.ROTATION_0; |
| import static android.view.Surface.ROTATION_180; |
| import static android.view.Surface.ROTATION_270; |
| import static android.view.Surface.ROTATION_90; |
| |
| import android.app.Activity; |
| import android.app.ActivityThread; |
| import android.graphics.Rect; |
| import android.hardware.display.DisplayManagerGlobal; |
| import android.os.IBinder; |
| import android.view.DisplayInfo; |
| import android.view.Surface; |
| |
| import androidx.annotation.Nullable; |
| |
| /** |
| * Toolkit class for calculation of the display feature bounds within the window. |
| * NOTE: This sample implementation only works for Activity windows, because there is no public APIs |
| * to obtain layout params or bounds for arbitrary windows. |
| */ |
| class ExtensionHelper { |
| /** |
| * Rotate the input rectangle specified in default display orientation to the current display |
| * rotation. |
| */ |
| static void rotateRectToDisplayRotation(Rect inOutRect, int displayId) { |
| DisplayManagerGlobal dmGlobal = DisplayManagerGlobal.getInstance(); |
| DisplayInfo displayInfo = dmGlobal.getDisplayInfo(displayId); |
| int rotation = displayInfo.rotation; |
| |
| boolean isSideRotation = rotation == ROTATION_90 || rotation == ROTATION_270; |
| int displayWidth = isSideRotation ? displayInfo.logicalHeight : displayInfo.logicalWidth; |
| int displayHeight = isSideRotation ? displayInfo.logicalWidth : displayInfo.logicalHeight; |
| |
| inOutRect.intersect(0, 0, displayWidth, displayHeight); |
| |
| rotateBounds(inOutRect, displayWidth, displayHeight, rotation); |
| } |
| |
| /** |
| * Rotate the input rectangle within parent bounds for a given delta. |
| */ |
| private static void rotateBounds(Rect inOutRect, int parentWidth, int parentHeight, |
| @Surface.Rotation int delta) { |
| int origLeft = inOutRect.left; |
| switch (delta) { |
| case ROTATION_0: |
| return; |
| case ROTATION_90: |
| inOutRect.left = inOutRect.top; |
| inOutRect.top = parentWidth - inOutRect.right; |
| inOutRect.right = inOutRect.bottom; |
| inOutRect.bottom = parentWidth - origLeft; |
| return; |
| case ROTATION_180: |
| inOutRect.left = parentWidth - inOutRect.right; |
| inOutRect.right = parentWidth - origLeft; |
| return; |
| case ROTATION_270: |
| inOutRect.left = parentHeight - inOutRect.bottom; |
| inOutRect.bottom = inOutRect.right; |
| inOutRect.right = parentHeight - inOutRect.top; |
| inOutRect.top = origLeft; |
| return; |
| } |
| } |
| |
| /** Transform rectangle from absolute coordinate space to the window coordinate space. */ |
| static void transformToWindowSpaceRect(Rect inOutRect, IBinder windowToken) { |
| Rect windowRect = getWindowBounds(windowToken); |
| if (windowRect == null) { |
| inOutRect.setEmpty(); |
| return; |
| } |
| if (!Rect.intersects(inOutRect, windowRect)) { |
| inOutRect.setEmpty(); |
| return; |
| } |
| inOutRect.intersect(windowRect); |
| inOutRect.offset(-windowRect.left, -windowRect.top); |
| } |
| |
| /** |
| * Get the current window bounds in absolute coordinates. |
| * NOTE: Only works with Activity windows. |
| */ |
| @Nullable |
| private static Rect getWindowBounds(IBinder windowToken) { |
| Activity activity = ActivityThread.currentActivityThread().getActivity(windowToken); |
| return activity != null |
| ? activity.getWindowManager().getCurrentWindowMetrics().getBounds() |
| : null; |
| } |
| |
| /** |
| * Check if this window is an Activity window that is in multi-window mode. |
| */ |
| static boolean isInMultiWindow(IBinder windowToken) { |
| Activity activity = ActivityThread.currentActivityThread().getActivity(windowToken); |
| return activity != null && activity.isInMultiWindowMode(); |
| } |
| |
| /** |
| * Get the id of the parent display for the window. |
| * NOTE: Only works with Activity windows. |
| */ |
| static int getWindowDisplay(IBinder windowToken) { |
| Activity activity = ActivityThread.currentActivityThread().getActivity(windowToken); |
| return activity != null |
| ? activity.getWindowManager().getDefaultDisplay().getDisplayId() : INVALID_DISPLAY; |
| } |
| } |