| /* |
| * Copyright (C) 2009 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.dpi.cts; |
| |
| import android.content.Context; |
| import android.content.pm.PackageManager; |
| import android.test.AndroidTestCase; |
| import android.util.DisplayMetrics; |
| import android.view.Display; |
| import android.view.WindowManager; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** |
| * Test for verifying a device's screen configuration. |
| */ |
| public class ConfigurationTest extends AndroidTestCase { |
| |
| public void testScreenConfiguration() { |
| WindowManager windowManager = |
| (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE); |
| Display display = windowManager.getDefaultDisplay(); |
| DisplayMetrics metrics = new DisplayMetrics(); |
| display.getMetrics(metrics); |
| |
| double xInches = (double) metrics.widthPixels / metrics.xdpi; |
| double yInches = (double) metrics.heightPixels / metrics.ydpi; |
| double diagonalInches = Math.sqrt(Math.pow(xInches, 2) + Math.pow(yInches, 2)); |
| double minSize = 2.5d; |
| if (getContext().getPackageManager().hasSystemFeature(PackageManager.FEATURE_WATCH)) { |
| // Watches have a different minimum diagonal. |
| minSize = 1.0d; |
| } |
| assertTrue("Screen diagonal must be at least " + minSize + " inches: " + diagonalInches, |
| diagonalInches >= minSize); |
| |
| double density = 160.0d * metrics.density; |
| assertTrue("Screen density must be at least 100 dpi: " + density, density >= 100.0d); |
| |
| Set<Integer> allowedDensities = new HashSet<Integer>(); |
| allowedDensities.add(DisplayMetrics.DENSITY_LOW); |
| allowedDensities.add(DisplayMetrics.DENSITY_MEDIUM); |
| allowedDensities.add(DisplayMetrics.DENSITY_TV); |
| allowedDensities.add(DisplayMetrics.DENSITY_HIGH); |
| allowedDensities.add(DisplayMetrics.DENSITY_280); |
| allowedDensities.add(DisplayMetrics.DENSITY_XHIGH); |
| allowedDensities.add(DisplayMetrics.DENSITY_360); |
| allowedDensities.add(DisplayMetrics.DENSITY_400); |
| allowedDensities.add(DisplayMetrics.DENSITY_420); |
| allowedDensities.add(DisplayMetrics.DENSITY_XXHIGH); |
| allowedDensities.add(DisplayMetrics.DENSITY_560); |
| allowedDensities.add(DisplayMetrics.DENSITY_XXXHIGH); |
| assertTrue("DisplayMetrics#densityDpi must be one of the DisplayMetrics.DENSITY_* values: " |
| + allowedDensities, allowedDensities.contains(metrics.densityDpi)); |
| |
| assertEquals(metrics.density, |
| (float) metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT, |
| 0.5f / DisplayMetrics.DENSITY_DEFAULT); |
| } |
| } |