| /* |
| * Copyright (C) 2022 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 android.server.wm; |
| |
| import static android.content.res.Configuration.ORIENTATION_LANDSCAPE; |
| import static android.server.wm.ActivityManagerTestBase.ReportedDisplayMetrics; |
| |
| import android.util.Size; |
| |
| /** |
| * A test helper class that queries or changes the latest DisplayMetrics override in WM by |
| * sending Shell wm commands. Provides handling for errors, orientation types and fallback |
| * behaviors. |
| * Example usage: This can be used to resize a Display in CTS test and trigger configuration |
| * changes. |
| */ |
| public class DisplayMetricsSession implements AutoCloseable { |
| private final ReportedDisplayMetrics mInitialDisplayMetrics; |
| private final int mDisplayId; |
| |
| public DisplayMetricsSession(int displayId) { |
| mDisplayId = displayId; |
| mInitialDisplayMetrics = ReportedDisplayMetrics.getDisplayMetrics( |
| mDisplayId); |
| } |
| |
| ReportedDisplayMetrics getInitialDisplayMetrics() { |
| return mInitialDisplayMetrics; |
| } |
| |
| ReportedDisplayMetrics getDisplayMetrics() { |
| return ReportedDisplayMetrics.getDisplayMetrics(mDisplayId); |
| } |
| |
| void changeAspectRatio(double aspectRatio, int orientation) { |
| final Size originalSize = mInitialDisplayMetrics.physicalSize; |
| final int smaller = Math.min(originalSize.getWidth(), originalSize.getHeight()); |
| final int larger = (int) (smaller * aspectRatio); |
| Size overrideSize; |
| if (orientation == ORIENTATION_LANDSCAPE) { |
| overrideSize = new Size(larger, smaller); |
| } else { |
| overrideSize = new Size(smaller, larger); |
| } |
| overrideDisplayMetrics(overrideSize, mInitialDisplayMetrics.physicalDensity); |
| } |
| |
| public void changeDisplayMetrics(double sizeRatio, double densityRatio) { |
| // Given a display may already have an override applied before the test is begun, |
| // resize based upon the override. |
| final Size originalSize; |
| final int density; |
| if (mInitialDisplayMetrics.overrideSize != null) { |
| originalSize = mInitialDisplayMetrics.overrideSize; |
| } else { |
| originalSize = mInitialDisplayMetrics.physicalSize; |
| } |
| |
| if (mInitialDisplayMetrics.overrideDensity != null) { |
| density = mInitialDisplayMetrics.overrideDensity; |
| } else { |
| density = mInitialDisplayMetrics.physicalDensity; |
| } |
| |
| final Size overrideSize = new Size((int)(originalSize.getWidth() * sizeRatio), |
| (int)(originalSize.getHeight() * sizeRatio)); |
| final int overrideDensity = (int)(density * densityRatio); |
| overrideDisplayMetrics(overrideSize, overrideDensity); |
| } |
| |
| void overrideDisplayMetrics(final Size size, final int density) { |
| mInitialDisplayMetrics.setDisplayMetrics(size, density); |
| } |
| |
| public void restoreDisplayMetrics() { |
| mInitialDisplayMetrics.restoreDisplayMetrics(); |
| } |
| |
| @Override |
| public void close() { |
| restoreDisplayMetrics(); |
| } |
| } |