| /* |
| * Copyright (C) 2013 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.app; |
| |
| import static android.app.ActivityThread.DEBUG_CONFIGURATION; |
| |
| import android.content.pm.ActivityInfo; |
| import android.content.res.AssetManager; |
| import android.content.res.CompatibilityInfo; |
| import android.content.res.Configuration; |
| import android.content.res.Resources; |
| import android.content.res.ResourcesKey; |
| import android.hardware.display.DisplayManagerGlobal; |
| import android.os.IBinder; |
| import android.util.ArrayMap; |
| import android.util.DisplayMetrics; |
| import android.util.Slog; |
| import android.view.Display; |
| import android.view.DisplayAdjustments; |
| |
| import java.lang.ref.WeakReference; |
| import java.util.Locale; |
| |
| /** @hide */ |
| public class ResourcesManager { |
| static final String TAG = "ResourcesManager"; |
| static final boolean DEBUG_CACHE = false; |
| static final boolean DEBUG_STATS = true; |
| |
| private static ResourcesManager sResourcesManager; |
| final ArrayMap<ResourcesKey, WeakReference<Resources> > mActiveResources |
| = new ArrayMap<ResourcesKey, WeakReference<Resources> >(); |
| |
| final ArrayMap<DisplayAdjustments, DisplayMetrics> mDefaultDisplayMetrics |
| = new ArrayMap<DisplayAdjustments, DisplayMetrics>(); |
| |
| CompatibilityInfo mResCompatibilityInfo; |
| |
| Configuration mResConfiguration; |
| final Configuration mTmpConfig = new Configuration(); |
| |
| public static ResourcesManager getInstance() { |
| synchronized (ResourcesManager.class) { |
| if (sResourcesManager == null) { |
| sResourcesManager = new ResourcesManager(); |
| } |
| return sResourcesManager; |
| } |
| } |
| |
| public Configuration getConfiguration() { |
| return mResConfiguration; |
| } |
| |
| public void flushDisplayMetricsLocked() { |
| mDefaultDisplayMetrics.clear(); |
| } |
| |
| public DisplayMetrics getDisplayMetricsLocked(int displayId) { |
| return getDisplayMetricsLocked(displayId, DisplayAdjustments.DEFAULT_DISPLAY_ADJUSTMENTS); |
| } |
| |
| public DisplayMetrics getDisplayMetricsLocked(int displayId, DisplayAdjustments daj) { |
| boolean isDefaultDisplay = (displayId == Display.DEFAULT_DISPLAY); |
| DisplayMetrics dm = isDefaultDisplay ? mDefaultDisplayMetrics.get(daj) : null; |
| if (dm != null) { |
| return dm; |
| } |
| dm = new DisplayMetrics(); |
| |
| DisplayManagerGlobal displayManager = DisplayManagerGlobal.getInstance(); |
| if (displayManager == null) { |
| // may be null early in system startup |
| dm.setToDefaults(); |
| return dm; |
| } |
| |
| if (isDefaultDisplay) { |
| mDefaultDisplayMetrics.put(daj, dm); |
| } |
| |
| Display d = displayManager.getCompatibleDisplay(displayId, daj); |
| if (d != null) { |
| d.getMetrics(dm); |
| } else { |
| // Display no longer exists |
| // FIXME: This would not be a problem if we kept the Display object around |
| // instead of using the raw display id everywhere. The Display object caches |
| // its information even after the display has been removed. |
| dm.setToDefaults(); |
| } |
| //Slog.i("foo", "New metrics: w=" + metrics.widthPixels + " h=" |
| // + metrics.heightPixels + " den=" + metrics.density |
| // + " xdpi=" + metrics.xdpi + " ydpi=" + metrics.ydpi); |
| return dm; |
| } |
| |
| final void applyNonDefaultDisplayMetricsToConfigurationLocked( |
| DisplayMetrics dm, Configuration config) { |
| config.touchscreen = Configuration.TOUCHSCREEN_NOTOUCH; |
| config.densityDpi = dm.densityDpi; |
| config.screenWidthDp = (int)(dm.widthPixels / dm.density); |
| config.screenHeightDp = (int)(dm.heightPixels / dm.density); |
| int sl = Configuration.resetScreenLayout(config.screenLayout); |
| if (dm.widthPixels > dm.heightPixels) { |
| config.orientation = Configuration.ORIENTATION_LANDSCAPE; |
| config.screenLayout = Configuration.reduceScreenLayout(sl, |
| config.screenWidthDp, config.screenHeightDp); |
| } else { |
| config.orientation = Configuration.ORIENTATION_PORTRAIT; |
| config.screenLayout = Configuration.reduceScreenLayout(sl, |
| config.screenHeightDp, config.screenWidthDp); |
| } |
| config.smallestScreenWidthDp = config.screenWidthDp; // assume screen does not rotate |
| config.compatScreenWidthDp = config.screenWidthDp; |
| config.compatScreenHeightDp = config.screenHeightDp; |
| config.compatSmallestScreenWidthDp = config.smallestScreenWidthDp; |
| } |
| |
| public boolean applyCompatConfiguration(int displayDensity, |
| Configuration compatConfiguration) { |
| if (mResCompatibilityInfo != null && !mResCompatibilityInfo.supportsScreen()) { |
| mResCompatibilityInfo.applyToConfiguration(displayDensity, compatConfiguration); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Creates the top level Resources for applications with the given compatibility info. |
| * |
| * @param resDir the resource directory. |
| * @param overlayDirs the resource overlay directories. |
| * @param libDirs the shared library resource dirs this app references. |
| * @param compatInfo the compability info. Must not be null. |
| * @param token the application token for determining stack bounds. |
| */ |
| public Resources getTopLevelResources(String resDir, String[] splitResDirs, |
| String[] overlayDirs, String[] libDirs, int displayId, |
| Configuration overrideConfiguration, CompatibilityInfo compatInfo, IBinder token) { |
| final float scale = compatInfo.applicationScale; |
| ResourcesKey key = new ResourcesKey(resDir, displayId, overrideConfiguration, scale, token); |
| Resources r; |
| synchronized (this) { |
| // Resources is app scale dependent. |
| if (false) { |
| Slog.w(TAG, "getTopLevelResources: " + resDir + " / " + scale); |
| } |
| WeakReference<Resources> wr = mActiveResources.get(key); |
| r = wr != null ? wr.get() : null; |
| //if (r != null) Slog.i(TAG, "isUpToDate " + resDir + ": " + r.getAssets().isUpToDate()); |
| if (r != null && r.getAssets().isUpToDate()) { |
| if (false) { |
| Slog.w(TAG, "Returning cached resources " + r + " " + resDir |
| + ": appScale=" + r.getCompatibilityInfo().applicationScale); |
| } |
| return r; |
| } |
| } |
| |
| //if (r != null) { |
| // Slog.w(TAG, "Throwing away out-of-date resources!!!! " |
| // + r + " " + resDir); |
| //} |
| |
| AssetManager assets = new AssetManager(); |
| // resDir can be null if the 'android' package is creating a new Resources object. |
| // This is fine, since each AssetManager automatically loads the 'android' package |
| // already. |
| if (resDir != null) { |
| if (assets.addAssetPath(resDir) == 0) { |
| return null; |
| } |
| } |
| |
| if (splitResDirs != null) { |
| for (String splitResDir : splitResDirs) { |
| if (assets.addAssetPath(splitResDir) == 0) { |
| return null; |
| } |
| } |
| } |
| |
| if (overlayDirs != null) { |
| for (String idmapPath : overlayDirs) { |
| assets.addOverlayPath(idmapPath); |
| } |
| } |
| |
| if (libDirs != null) { |
| for (String libDir : libDirs) { |
| if (assets.addAssetPath(libDir) == 0) { |
| Slog.w(TAG, "Asset path '" + libDir + |
| "' does not exist or contains no resources."); |
| } |
| } |
| } |
| |
| //Slog.i(TAG, "Resource: key=" + key + ", display metrics=" + metrics); |
| DisplayMetrics dm = getDisplayMetricsLocked(displayId); |
| Configuration config; |
| boolean isDefaultDisplay = (displayId == Display.DEFAULT_DISPLAY); |
| final boolean hasOverrideConfig = key.hasOverrideConfiguration(); |
| if (!isDefaultDisplay || hasOverrideConfig) { |
| config = new Configuration(getConfiguration()); |
| if (!isDefaultDisplay) { |
| applyNonDefaultDisplayMetricsToConfigurationLocked(dm, config); |
| } |
| if (hasOverrideConfig) { |
| config.updateFrom(key.mOverrideConfiguration); |
| } |
| } else { |
| config = getConfiguration(); |
| } |
| r = new Resources(assets, dm, config, compatInfo, token); |
| if (false) { |
| Slog.i(TAG, "Created app resources " + resDir + " " + r + ": " |
| + r.getConfiguration() + " appScale=" |
| + r.getCompatibilityInfo().applicationScale); |
| } |
| |
| synchronized (this) { |
| WeakReference<Resources> wr = mActiveResources.get(key); |
| Resources existing = wr != null ? wr.get() : null; |
| if (existing != null && existing.getAssets().isUpToDate()) { |
| // Someone else already created the resources while we were |
| // unlocked; go ahead and use theirs. |
| r.getAssets().close(); |
| return existing; |
| } |
| |
| // XXX need to remove entries when weak references go away |
| mActiveResources.put(key, new WeakReference<Resources>(r)); |
| return r; |
| } |
| } |
| |
| public final boolean applyConfigurationToResourcesLocked(Configuration config, |
| CompatibilityInfo compat) { |
| if (mResConfiguration == null) { |
| mResConfiguration = new Configuration(); |
| } |
| if (!mResConfiguration.isOtherSeqNewer(config) && compat == null) { |
| if (DEBUG_CONFIGURATION) Slog.v(TAG, "Skipping new config: curSeq=" |
| + mResConfiguration.seq + ", newSeq=" + config.seq); |
| return false; |
| } |
| int changes = mResConfiguration.updateFrom(config); |
| flushDisplayMetricsLocked(); |
| DisplayMetrics defaultDisplayMetrics = getDisplayMetricsLocked(Display.DEFAULT_DISPLAY); |
| |
| if (compat != null && (mResCompatibilityInfo == null || |
| !mResCompatibilityInfo.equals(compat))) { |
| mResCompatibilityInfo = compat; |
| changes |= ActivityInfo.CONFIG_SCREEN_LAYOUT |
| | ActivityInfo.CONFIG_SCREEN_SIZE |
| | ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE; |
| } |
| |
| // set it for java, this also affects newly created Resources |
| if (config.locale != null) { |
| Locale.setDefault(config.locale); |
| } |
| |
| Resources.updateSystemConfiguration(config, defaultDisplayMetrics, compat); |
| |
| ApplicationPackageManager.configurationChanged(); |
| //Slog.i(TAG, "Configuration changed in " + currentPackageName()); |
| |
| Configuration tmpConfig = null; |
| |
| for (int i=mActiveResources.size()-1; i>=0; i--) { |
| ResourcesKey key = mActiveResources.keyAt(i); |
| Resources r = mActiveResources.valueAt(i).get(); |
| if (r != null) { |
| if (DEBUG_CONFIGURATION) Slog.v(TAG, "Changing resources " |
| + r + " config to: " + config); |
| int displayId = key.mDisplayId; |
| boolean isDefaultDisplay = (displayId == Display.DEFAULT_DISPLAY); |
| DisplayMetrics dm = defaultDisplayMetrics; |
| final boolean hasOverrideConfiguration = key.hasOverrideConfiguration(); |
| if (!isDefaultDisplay || hasOverrideConfiguration) { |
| if (tmpConfig == null) { |
| tmpConfig = new Configuration(); |
| } |
| tmpConfig.setTo(config); |
| if (!isDefaultDisplay) { |
| dm = getDisplayMetricsLocked(displayId); |
| applyNonDefaultDisplayMetricsToConfigurationLocked(dm, tmpConfig); |
| } |
| if (hasOverrideConfiguration) { |
| tmpConfig.updateFrom(key.mOverrideConfiguration); |
| } |
| r.updateConfiguration(tmpConfig, dm, compat); |
| } else { |
| r.updateConfiguration(config, dm, compat); |
| } |
| //Slog.i(TAG, "Updated app resources " + v.getKey() |
| // + " " + r + ": " + r.getConfiguration()); |
| } else { |
| //Slog.i(TAG, "Removing old resources " + v.getKey()); |
| mActiveResources.removeAt(i); |
| } |
| } |
| |
| return changes != 0; |
| } |
| |
| } |
