| /* |
| * Copyright (C) 2006 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.content.res; |
| |
| import android.content.pm.ApplicationInfo; |
| import android.util.DisplayMetrics; |
| import android.view.Gravity; |
| |
| /** |
| * CompatibilityInfo class keeps the information about compatibility mode that the application is |
| * running under. |
| * |
| * {@hide} |
| */ |
| public class CompatibilityInfo { |
| /** default compatibility info object for compatible applications */ |
| public static final CompatibilityInfo DEFAULT_COMPATIBILITY_INFO = new CompatibilityInfo(); |
| |
| /** |
| * The default width of the screen in portrait mode. |
| */ |
| public static final int DEFAULT_PORTRAIT_WIDTH = 320; |
| |
| /** |
| * The default height of the screen in portrait mode. |
| */ |
| public static final int DEFAULT_PORTRAIT_HEIGHT = 480; |
| |
| /** |
| * Application's scale. |
| */ |
| public final float mApplicationScale; |
| |
| /** |
| * Application's inverted scale. |
| */ |
| public final float mApplicationInvertedScale; |
| |
| /** |
| * |
| * A boolean flag to indicates that the application can expand over the original size. |
| */ |
| public final boolean mExpandable; |
| |
| /** |
| * A boolean flag to tell if the application needs scaling (when mApplicationScale != 1.0f) |
| */ |
| public final boolean mScalingRequired; |
| |
| public CompatibilityInfo(ApplicationInfo appInfo) { |
| // A temp workaround to fix rotation issue. |
| // mExpandable = appInfo.expandable; |
| mExpandable = true; |
| float packageDensityScale = -1.0f; |
| if (appInfo.supportsDensities != null) { |
| int minDiff = Integer.MAX_VALUE; |
| for (int density : appInfo.supportsDensities) { |
| int tmpDiff = Math.abs(DisplayMetrics.DEVICE_DENSITY - density); |
| if (tmpDiff == 0) { |
| packageDensityScale = 1.0f; |
| break; |
| } |
| // prefer higher density (appScale>1.0), unless that's only option. |
| if (tmpDiff < minDiff && packageDensityScale < 1.0f) { |
| packageDensityScale = DisplayMetrics.DEVICE_DENSITY / (float) density; |
| minDiff = tmpDiff; |
| } |
| } |
| } |
| if (packageDensityScale > 0.0f) { |
| mApplicationScale = packageDensityScale; |
| } else { |
| mApplicationScale = DisplayMetrics.DEVICE_DENSITY / (float) DisplayMetrics.DEFAULT_DENSITY; |
| } |
| mApplicationInvertedScale = 1.0f / mApplicationScale; |
| mScalingRequired = mApplicationScale != 1.0f; |
| } |
| |
| private CompatibilityInfo() { |
| mApplicationScale = mApplicationInvertedScale = 1.0f; |
| mExpandable = true; |
| mScalingRequired = false; |
| } |
| |
| @Override |
| public String toString() { |
| return "CompatibilityInfo{scale=" + mApplicationScale + |
| ", expandable=" + mExpandable + "}"; |
| } |
| } |