Craig Mautner | 88c0589 | 2013-06-28 09:47:45 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.app; |
| 18 | |
| 19 | import static android.app.ActivityThread.DEBUG_CONFIGURATION; |
| 20 | |
Craig Mautner | 88c0589 | 2013-06-28 09:47:45 -0700 | [diff] [blame] | 21 | import android.content.pm.ActivityInfo; |
| 22 | import android.content.res.AssetManager; |
| 23 | import android.content.res.CompatibilityInfo; |
| 24 | import android.content.res.Configuration; |
| 25 | import android.content.res.Resources; |
| 26 | import android.content.res.ResourcesKey; |
| 27 | import android.hardware.display.DisplayManagerGlobal; |
| 28 | import android.os.IBinder; |
| 29 | import android.util.ArrayMap; |
| 30 | import android.util.DisplayMetrics; |
| 31 | import android.util.Slog; |
| 32 | import android.view.Display; |
| 33 | import android.view.DisplayAdjustments; |
| 34 | |
| 35 | import java.lang.ref.WeakReference; |
Craig Mautner | 88c0589 | 2013-06-28 09:47:45 -0700 | [diff] [blame] | 36 | import java.util.Locale; |
Craig Mautner | 88c0589 | 2013-06-28 09:47:45 -0700 | [diff] [blame] | 37 | |
| 38 | /** @hide */ |
| 39 | public class ResourcesManager { |
| 40 | static final String TAG = "ResourcesManager"; |
| 41 | static final boolean DEBUG_CACHE = false; |
| 42 | static final boolean DEBUG_STATS = true; |
| 43 | |
| 44 | private static ResourcesManager sResourcesManager; |
Dianne Hackborn | add005c | 2013-07-17 18:43:12 -0700 | [diff] [blame] | 45 | final ArrayMap<ResourcesKey, WeakReference<Resources> > mActiveResources |
| 46 | = new ArrayMap<ResourcesKey, WeakReference<Resources> >(); |
Craig Mautner | 88c0589 | 2013-06-28 09:47:45 -0700 | [diff] [blame] | 47 | |
| 48 | final ArrayMap<DisplayAdjustments, DisplayMetrics> mDefaultDisplayMetrics |
| 49 | = new ArrayMap<DisplayAdjustments, DisplayMetrics>(); |
| 50 | |
| 51 | CompatibilityInfo mResCompatibilityInfo; |
| 52 | |
| 53 | Configuration mResConfiguration; |
| 54 | final Configuration mTmpConfig = new Configuration(); |
| 55 | |
| 56 | public static ResourcesManager getInstance() { |
| 57 | synchronized (ResourcesManager.class) { |
| 58 | if (sResourcesManager == null) { |
| 59 | sResourcesManager = new ResourcesManager(); |
| 60 | } |
| 61 | return sResourcesManager; |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | public Configuration getConfiguration() { |
| 66 | return mResConfiguration; |
| 67 | } |
| 68 | |
| 69 | public void flushDisplayMetricsLocked() { |
| 70 | mDefaultDisplayMetrics.clear(); |
| 71 | } |
| 72 | |
| 73 | public DisplayMetrics getDisplayMetricsLocked(int displayId) { |
| 74 | return getDisplayMetricsLocked(displayId, DisplayAdjustments.DEFAULT_DISPLAY_ADJUSTMENTS); |
| 75 | } |
| 76 | |
| 77 | public DisplayMetrics getDisplayMetricsLocked(int displayId, DisplayAdjustments daj) { |
| 78 | boolean isDefaultDisplay = (displayId == Display.DEFAULT_DISPLAY); |
| 79 | DisplayMetrics dm = isDefaultDisplay ? mDefaultDisplayMetrics.get(daj) : null; |
| 80 | if (dm != null) { |
| 81 | return dm; |
| 82 | } |
| 83 | dm = new DisplayMetrics(); |
| 84 | |
| 85 | DisplayManagerGlobal displayManager = DisplayManagerGlobal.getInstance(); |
| 86 | if (displayManager == null) { |
| 87 | // may be null early in system startup |
| 88 | dm.setToDefaults(); |
| 89 | return dm; |
| 90 | } |
| 91 | |
| 92 | if (isDefaultDisplay) { |
| 93 | mDefaultDisplayMetrics.put(daj, dm); |
| 94 | } |
| 95 | |
| 96 | Display d = displayManager.getCompatibleDisplay(displayId, daj); |
| 97 | if (d != null) { |
| 98 | d.getMetrics(dm); |
| 99 | } else { |
| 100 | // Display no longer exists |
| 101 | // FIXME: This would not be a problem if we kept the Display object around |
| 102 | // instead of using the raw display id everywhere. The Display object caches |
| 103 | // its information even after the display has been removed. |
| 104 | dm.setToDefaults(); |
| 105 | } |
| 106 | //Slog.i("foo", "New metrics: w=" + metrics.widthPixels + " h=" |
| 107 | // + metrics.heightPixels + " den=" + metrics.density |
| 108 | // + " xdpi=" + metrics.xdpi + " ydpi=" + metrics.ydpi); |
| 109 | return dm; |
| 110 | } |
| 111 | |
| 112 | final void applyNonDefaultDisplayMetricsToConfigurationLocked( |
| 113 | DisplayMetrics dm, Configuration config) { |
| 114 | config.touchscreen = Configuration.TOUCHSCREEN_NOTOUCH; |
| 115 | config.densityDpi = dm.densityDpi; |
| 116 | config.screenWidthDp = (int)(dm.widthPixels / dm.density); |
| 117 | config.screenHeightDp = (int)(dm.heightPixels / dm.density); |
| 118 | int sl = Configuration.resetScreenLayout(config.screenLayout); |
| 119 | if (dm.widthPixels > dm.heightPixels) { |
| 120 | config.orientation = Configuration.ORIENTATION_LANDSCAPE; |
| 121 | config.screenLayout = Configuration.reduceScreenLayout(sl, |
| 122 | config.screenWidthDp, config.screenHeightDp); |
| 123 | } else { |
| 124 | config.orientation = Configuration.ORIENTATION_PORTRAIT; |
| 125 | config.screenLayout = Configuration.reduceScreenLayout(sl, |
| 126 | config.screenHeightDp, config.screenWidthDp); |
| 127 | } |
| 128 | config.smallestScreenWidthDp = config.screenWidthDp; // assume screen does not rotate |
| 129 | config.compatScreenWidthDp = config.screenWidthDp; |
| 130 | config.compatScreenHeightDp = config.screenHeightDp; |
| 131 | config.compatSmallestScreenWidthDp = config.smallestScreenWidthDp; |
| 132 | } |
| 133 | |
| 134 | public boolean applyCompatConfiguration(int displayDensity, |
| 135 | Configuration compatConfiguration) { |
| 136 | if (mResCompatibilityInfo != null && !mResCompatibilityInfo.supportsScreen()) { |
| 137 | mResCompatibilityInfo.applyToConfiguration(displayDensity, compatConfiguration); |
| 138 | return true; |
| 139 | } |
| 140 | return false; |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * Creates the top level Resources for applications with the given compatibility info. |
| 145 | * |
| 146 | * @param resDir the resource directory. |
| 147 | * @param compatInfo the compability info. Must not be null. |
| 148 | * @param token the application token for determining stack bounds. |
| 149 | */ |
| 150 | public Resources getTopLevelResources(String resDir, int displayId, |
| 151 | Configuration overrideConfiguration, CompatibilityInfo compatInfo, IBinder token) { |
| 152 | final float scale = compatInfo.applicationScale; |
| 153 | ResourcesKey key = new ResourcesKey(resDir, displayId, overrideConfiguration, scale, |
| 154 | token); |
| 155 | Resources r; |
| 156 | synchronized (this) { |
| 157 | // Resources is app scale dependent. |
| 158 | if (false) { |
| 159 | Slog.w(TAG, "getTopLevelResources: " + resDir + " / " + scale); |
| 160 | } |
| 161 | WeakReference<Resources> wr = mActiveResources.get(key); |
| 162 | r = wr != null ? wr.get() : null; |
| 163 | //if (r != null) Slog.i(TAG, "isUpToDate " + resDir + ": " + r.getAssets().isUpToDate()); |
| 164 | if (r != null && r.getAssets().isUpToDate()) { |
| 165 | if (false) { |
| 166 | Slog.w(TAG, "Returning cached resources " + r + " " + resDir |
| 167 | + ": appScale=" + r.getCompatibilityInfo().applicationScale); |
| 168 | } |
| 169 | return r; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | //if (r != null) { |
| 174 | // Slog.w(TAG, "Throwing away out-of-date resources!!!! " |
| 175 | // + r + " " + resDir); |
| 176 | //} |
| 177 | |
| 178 | AssetManager assets = new AssetManager(); |
| 179 | if (assets.addAssetPath(resDir) == 0) { |
| 180 | return null; |
| 181 | } |
| 182 | |
| 183 | //Slog.i(TAG, "Resource: key=" + key + ", display metrics=" + metrics); |
| 184 | DisplayMetrics dm = getDisplayMetricsLocked(displayId); |
| 185 | Configuration config; |
| 186 | boolean isDefaultDisplay = (displayId == Display.DEFAULT_DISPLAY); |
| 187 | final boolean hasOverrideConfig = key.hasOverrideConfiguration(); |
| 188 | if (!isDefaultDisplay || hasOverrideConfig) { |
| 189 | config = new Configuration(getConfiguration()); |
| 190 | if (!isDefaultDisplay) { |
| 191 | applyNonDefaultDisplayMetricsToConfigurationLocked(dm, config); |
| 192 | } |
| 193 | if (hasOverrideConfig) { |
| 194 | config.updateFrom(key.mOverrideConfiguration); |
| 195 | } |
| 196 | } else { |
| 197 | config = getConfiguration(); |
| 198 | } |
| 199 | r = new Resources(assets, dm, config, compatInfo, token); |
| 200 | if (false) { |
| 201 | Slog.i(TAG, "Created app resources " + resDir + " " + r + ": " |
| 202 | + r.getConfiguration() + " appScale=" |
| 203 | + r.getCompatibilityInfo().applicationScale); |
| 204 | } |
| 205 | |
| 206 | synchronized (this) { |
| 207 | WeakReference<Resources> wr = mActiveResources.get(key); |
| 208 | Resources existing = wr != null ? wr.get() : null; |
| 209 | if (existing != null && existing.getAssets().isUpToDate()) { |
| 210 | // Someone else already created the resources while we were |
| 211 | // unlocked; go ahead and use theirs. |
| 212 | r.getAssets().close(); |
| 213 | return existing; |
| 214 | } |
| 215 | |
| 216 | // XXX need to remove entries when weak references go away |
| 217 | mActiveResources.put(key, new WeakReference<Resources>(r)); |
| 218 | return r; |
| 219 | } |
| 220 | } |
| 221 | |
| 222 | public final boolean applyConfigurationToResourcesLocked(Configuration config, |
| 223 | CompatibilityInfo compat) { |
| 224 | if (mResConfiguration == null) { |
| 225 | mResConfiguration = new Configuration(); |
| 226 | } |
| 227 | if (!mResConfiguration.isOtherSeqNewer(config) && compat == null) { |
| 228 | if (DEBUG_CONFIGURATION) Slog.v(TAG, "Skipping new config: curSeq=" |
| 229 | + mResConfiguration.seq + ", newSeq=" + config.seq); |
| 230 | return false; |
| 231 | } |
| 232 | int changes = mResConfiguration.updateFrom(config); |
| 233 | flushDisplayMetricsLocked(); |
| 234 | DisplayMetrics defaultDisplayMetrics = getDisplayMetricsLocked(Display.DEFAULT_DISPLAY); |
| 235 | |
| 236 | if (compat != null && (mResCompatibilityInfo == null || |
| 237 | !mResCompatibilityInfo.equals(compat))) { |
| 238 | mResCompatibilityInfo = compat; |
| 239 | changes |= ActivityInfo.CONFIG_SCREEN_LAYOUT |
| 240 | | ActivityInfo.CONFIG_SCREEN_SIZE |
| 241 | | ActivityInfo.CONFIG_SMALLEST_SCREEN_SIZE; |
| 242 | } |
| 243 | |
| 244 | // set it for java, this also affects newly created Resources |
| 245 | if (config.locale != null) { |
| 246 | Locale.setDefault(config.locale); |
| 247 | } |
| 248 | |
| 249 | Resources.updateSystemConfiguration(config, defaultDisplayMetrics, compat); |
| 250 | |
| 251 | ApplicationPackageManager.configurationChanged(); |
| 252 | //Slog.i(TAG, "Configuration changed in " + currentPackageName()); |
| 253 | |
| 254 | Configuration tmpConfig = null; |
| 255 | |
Dianne Hackborn | add005c | 2013-07-17 18:43:12 -0700 | [diff] [blame] | 256 | for (int i=mActiveResources.size()-1; i>=0; i--) { |
| 257 | ResourcesKey key = mActiveResources.keyAt(i); |
| 258 | Resources r = mActiveResources.valueAt(i).get(); |
Craig Mautner | 88c0589 | 2013-06-28 09:47:45 -0700 | [diff] [blame] | 259 | if (r != null) { |
| 260 | if (DEBUG_CONFIGURATION) Slog.v(TAG, "Changing resources " |
| 261 | + r + " config to: " + config); |
Dianne Hackborn | add005c | 2013-07-17 18:43:12 -0700 | [diff] [blame] | 262 | int displayId = key.mDisplayId; |
Craig Mautner | 88c0589 | 2013-06-28 09:47:45 -0700 | [diff] [blame] | 263 | boolean isDefaultDisplay = (displayId == Display.DEFAULT_DISPLAY); |
| 264 | DisplayMetrics dm = defaultDisplayMetrics; |
Dianne Hackborn | add005c | 2013-07-17 18:43:12 -0700 | [diff] [blame] | 265 | final boolean hasOverrideConfiguration = key.hasOverrideConfiguration(); |
Craig Mautner | 88c0589 | 2013-06-28 09:47:45 -0700 | [diff] [blame] | 266 | if (!isDefaultDisplay || hasOverrideConfiguration) { |
| 267 | if (tmpConfig == null) { |
| 268 | tmpConfig = new Configuration(); |
| 269 | } |
| 270 | tmpConfig.setTo(config); |
| 271 | if (!isDefaultDisplay) { |
| 272 | dm = getDisplayMetricsLocked(displayId); |
| 273 | applyNonDefaultDisplayMetricsToConfigurationLocked(dm, tmpConfig); |
| 274 | } |
| 275 | if (hasOverrideConfiguration) { |
Dianne Hackborn | add005c | 2013-07-17 18:43:12 -0700 | [diff] [blame] | 276 | tmpConfig.updateFrom(key.mOverrideConfiguration); |
Craig Mautner | 88c0589 | 2013-06-28 09:47:45 -0700 | [diff] [blame] | 277 | } |
| 278 | r.updateConfiguration(tmpConfig, dm, compat); |
| 279 | } else { |
| 280 | r.updateConfiguration(config, dm, compat); |
| 281 | } |
| 282 | //Slog.i(TAG, "Updated app resources " + v.getKey() |
| 283 | // + " " + r + ": " + r.getConfiguration()); |
| 284 | } else { |
| 285 | //Slog.i(TAG, "Removing old resources " + v.getKey()); |
Dianne Hackborn | add005c | 2013-07-17 18:43:12 -0700 | [diff] [blame] | 286 | mActiveResources.removeAt(i); |
Craig Mautner | 88c0589 | 2013-06-28 09:47:45 -0700 | [diff] [blame] | 287 | } |
| 288 | } |
| 289 | |
| 290 | return changes != 0; |
| 291 | } |
| 292 | |
| 293 | } |