1 /* 2 * Copyright (C) 2010 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 com.android.gallery3d.util; 18 19 import android.annotation.TargetApi; 20 import android.content.ActivityNotFoundException; 21 import android.content.ComponentName; 22 import android.content.Context; 23 import android.content.Intent; 24 import android.content.SharedPreferences; 25 import android.content.pm.PackageManager; 26 import android.content.pm.ResolveInfo; 27 import android.content.res.Resources; 28 import android.graphics.Color; 29 import android.net.Uri; 30 import android.os.ConditionVariable; 31 import android.os.Environment; 32 import android.os.StatFs; 33 import android.preference.PreferenceManager; 34 import android.provider.MediaStore; 35 import android.util.DisplayMetrics; 36 import android.util.Log; 37 import android.view.WindowManager; 38 39 import com.android.gallery3d.R; 40 import com.android.gallery3d.app.GalleryActivity; 41 import com.android.gallery3d.app.PackagesMonitor; 42 import com.android.gallery3d.common.ApiHelper; 43 import com.android.gallery3d.data.DataManager; 44 import com.android.gallery3d.data.MediaItem; 45 import com.android.gallery3d.ui.TiledScreenNail; 46 import com.android.gallery3d.util.IntentHelper; 47 import com.android.gallery3d.util.ThreadPool.CancelListener; 48 import com.android.gallery3d.util.ThreadPool.JobContext; 49 50 import java.io.File; 51 import java.util.Arrays; 52 import java.util.List; 53 import java.util.Locale; 54 55 public class GalleryUtils { 56 private static final String TAG = "GalleryUtils"; 57 private static final String MAPS_PACKAGE_NAME = "com.google.android.apps.maps"; 58 private static final String MAPS_CLASS_NAME = "com.google.android.maps.MapsActivity"; 59 private static final String CAMERA_LAUNCHER_NAME = "com.android.camera.CameraLauncher"; 60 61 public static final String MIME_TYPE_IMAGE = "image/*"; 62 public static final String MIME_TYPE_VIDEO = "video/*"; 63 public static final String MIME_TYPE_PANORAMA360 = "application/vnd.google.panorama360+jpg"; 64 public static final String MIME_TYPE_ALL = "*/*"; 65 66 private static final String DIR_TYPE_IMAGE = "vnd.android.cursor.dir/image"; 67 private static final String DIR_TYPE_VIDEO = "vnd.android.cursor.dir/video"; 68 69 private static final String PREFIX_PHOTO_EDITOR_UPDATE = "editor-update-"; 70 private static final String PREFIX_HAS_PHOTO_EDITOR = "has-editor-"; 71 72 private static final String KEY_CAMERA_UPDATE = "camera-update"; 73 private static final String KEY_HAS_CAMERA = "has-camera"; 74 75 private static float sPixelDensity = -1f; 76 private static boolean sCameraAvailableInitialized = false; 77 private static boolean sCameraAvailable; 78 79 public static void initialize(Context context) { 80 DisplayMetrics metrics = new DisplayMetrics(); 81 WindowManager wm = (WindowManager) 82 context.getSystemService(Context.WINDOW_SERVICE); 83 wm.getDefaultDisplay().getMetrics(metrics); 84 sPixelDensity = metrics.density; 85 Resources r = context.getResources(); 86 TiledScreenNail.setPlaceholderColor(r.getColor( 87 R.color.bitmap_screennail_placeholder)); 88 initializeThumbnailSizes(metrics, r); 89 } 90 91 private static void initializeThumbnailSizes(DisplayMetrics metrics, Resources r) { 92 int maxPixels = Math.max(metrics.heightPixels, metrics.widthPixels); 93 94 // For screen-nails, we never need to completely fill the screen 95 MediaItem.setThumbnailSizes(maxPixels / 2, maxPixels / 5); 96 TiledScreenNail.setMaxSide(maxPixels / 2); 97 } 98 99 public static float[] intColorToFloatARGBArray(int from) { 100 return new float[] { 101 Color.alpha(from) / 255f, 102 Color.red(from) / 255f, 103 Color.green(from) / 255f, 104 Color.blue(from) / 255f 105 }; 106 } 107 108 public static float dpToPixel(float dp) { 109 return sPixelDensity * dp; 110 } 111 112 public static int dpToPixel(int dp) { 113 return Math.round(dpToPixel((float) dp)); 114 } 115 116 public static int meterToPixel(float meter) { 117 // 1 meter = 39.37 inches, 1 inch = 160 dp. 118 return Math.round(dpToPixel(meter * 39.37f * 160)); 119 } 120 121 public static byte[] getBytes(String in) { 122 byte[] result = new byte[in.length() * 2]; 123 int output = 0; 124 for (char ch : in.toCharArray()) { 125 result[output++] = (byte) (ch & 0xFF); 126 result[output++] = (byte) (ch >> 8); 127 } 128 return result; 129 } 130 131 // Below are used the detect using database in the render thread. It only 132 // works most of the time, but that's ok because it's for debugging only. 133 134 private static volatile Thread sCurrentThread; 135 private static volatile boolean sWarned; 136 137 public static void setRenderThread() { 138 sCurrentThread = Thread.currentThread(); 139 } 140 141 public static void assertNotInRenderThread() { 142 if (!sWarned) { 143 if (Thread.currentThread() == sCurrentThread) { 144 sWarned = true; 145 Log.w(TAG, new Throwable("Should not do this in render thread")); 146 } 147 } 148 } 149 150 private static final double RAD_PER_DEG = Math.PI / 180.0; 151 private static final double EARTH_RADIUS_METERS = 6367000.0; 152 153 public static double fastDistanceMeters(double latRad1, double lngRad1, 154 double latRad2, double lngRad2) { 155 if ((Math.abs(latRad1 - latRad2) > RAD_PER_DEG) 156 || (Math.abs(lngRad1 - lngRad2) > RAD_PER_DEG)) { 157 return accurateDistanceMeters(latRad1, lngRad1, latRad2, lngRad2); 158 } 159 // Approximate sin(x) = x. 160 double sineLat = (latRad1 - latRad2); 161 162 // Approximate sin(x) = x. 163 double sineLng = (lngRad1 - lngRad2); 164 165 // Approximate cos(lat1) * cos(lat2) using 166 // cos((lat1 + lat2)/2) ^ 2 167 double cosTerms = Math.cos((latRad1 + latRad2) / 2.0); 168 cosTerms = cosTerms * cosTerms; 169 double trigTerm = sineLat * sineLat + cosTerms * sineLng * sineLng; 170 trigTerm = Math.sqrt(trigTerm); 171 172 // Approximate arcsin(x) = x 173 return EARTH_RADIUS_METERS * trigTerm; 174 } 175 176 public static double accurateDistanceMeters(double lat1, double lng1, 177 double lat2, double lng2) { 178 double dlat = Math.sin(0.5 * (lat2 - lat1)); 179 double dlng = Math.sin(0.5 * (lng2 - lng1)); 180 double x = dlat * dlat + dlng * dlng * Math.cos(lat1) * Math.cos(lat2); 181 return (2 * Math.atan2(Math.sqrt(x), Math.sqrt(Math.max(0.0, 182 1.0 - x)))) * EARTH_RADIUS_METERS; 183 } 184 185 186 public static final double toMile(double meter) { 187 return meter / 1609; 188 } 189 190 // For debugging, it will block the caller for timeout millis. 191 public static void fakeBusy(JobContext jc, int timeout) { 192 final ConditionVariable cv = new ConditionVariable(); 193 jc.setCancelListener(new CancelListener() { 194 @Override 195 public void onCancel() { 196 cv.open(); 197 } 198 }); 199 cv.block(timeout); 200 jc.setCancelListener(null); 201 } 202 203 public static boolean isEditorAvailable(Context context, String mimeType) { 204 int version = PackagesMonitor.getPackagesVersion(context); 205 206 String updateKey = PREFIX_PHOTO_EDITOR_UPDATE + mimeType; 207 String hasKey = PREFIX_HAS_PHOTO_EDITOR + mimeType; 208 209 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context); 210 if (prefs.getInt(updateKey, 0) != version) { 211 PackageManager packageManager = context.getPackageManager(); 212 List<ResolveInfo> infos = packageManager.queryIntentActivities( 213 new Intent(Intent.ACTION_EDIT).setType(mimeType), 0); 214 prefs.edit().putInt(updateKey, version) 215 .putBoolean(hasKey, !infos.isEmpty()) 216 .commit(); 217 } 218 219 return prefs.getBoolean(hasKey, true); 220 } 221 222 public static boolean isAnyCameraAvailable(Context context) { 223 int version = PackagesMonitor.getPackagesVersion(context); 224 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context); 225 if (prefs.getInt(KEY_CAMERA_UPDATE, 0) != version) { 226 PackageManager packageManager = context.getPackageManager(); 227 List<ResolveInfo> infos = packageManager.queryIntentActivities( 228 new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA), 0); 229 prefs.edit().putInt(KEY_CAMERA_UPDATE, version) 230 .putBoolean(KEY_HAS_CAMERA, !infos.isEmpty()) 231 .commit(); 232 } 233 return prefs.getBoolean(KEY_HAS_CAMERA, true); 234 } 235 236 public static boolean isCameraAvailable(Context context) { 237 if (sCameraAvailableInitialized) return sCameraAvailable; 238 PackageManager pm = context.getPackageManager(); 239 Intent cameraIntent = IntentHelper.getCameraIntent(context); 240 List<ResolveInfo> apps = pm.queryIntentActivities(cameraIntent, 0); 241 sCameraAvailableInitialized = true; 242 sCameraAvailable = !apps.isEmpty(); 243 return sCameraAvailable; 244 } 245 246 public static void startCameraActivity(Context context) { 247 Intent intent = new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA) 248 .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP 249 | Intent.FLAG_ACTIVITY_NEW_TASK); 250 try { 251 context.startActivity(intent); 252 } catch (ActivityNotFoundException e) { 253 // This will only occur if Camera was disabled while Gallery is open 254 // since we cache our availability check. Just abort the attempt. 255 Log.e(TAG, "Camera activity previously detected but cannot be found", e); 256 } 257 } 258 259 public static void startGalleryActivity(Context context) { 260 Intent intent = new Intent(context, GalleryActivity.class) 261 .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP 262 | Intent.FLAG_ACTIVITY_NEW_TASK); 263 context.startActivity(intent); 264 } 265 266 public static boolean isValidLocation(double latitude, double longitude) { 267 // TODO: change || to && after we fix the default location issue 268 return (latitude != MediaItem.INVALID_LATLNG || longitude != MediaItem.INVALID_LATLNG); 269 } 270 271 public static String formatLatitudeLongitude(String format, double latitude, 272 double longitude) { 273 // We need to specify the locale otherwise it may go wrong in some language 274 // (e.g. Locale.FRENCH) 275 return String.format(Locale.ENGLISH, format, latitude, longitude); 276 } 277 278 public static void showOnMap(Context context, double latitude, double longitude) { 279 try { 280 // We don't use "geo:latitude,longitude" because it only centers 281 // the MapView to the specified location, but we need a marker 282 // for further operations (routing to/from). 283 // The q=(lat, lng) syntax is suggested by geo-team. 284 String uri = formatLatitudeLongitude("http://maps.google.com/maps?f=q&q=(%f,%f)", 285 latitude, longitude); 286 ComponentName compName = new ComponentName(MAPS_PACKAGE_NAME, 287 MAPS_CLASS_NAME); 288 Intent mapsIntent = new Intent(Intent.ACTION_VIEW, 289 Uri.parse(uri)).setComponent(compName); 290 context.startActivity(mapsIntent); 291 } catch (ActivityNotFoundException e) { 292 // Use the "geo intent" if no GMM is installed 293 Log.e(TAG, "GMM activity not found!", e); 294 String url = formatLatitudeLongitude("geo:%f,%f", latitude, longitude); 295 Intent mapsIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); 296 context.startActivity(mapsIntent); 297 } 298 } 299 300 public static void setViewPointMatrix( 301 float matrix[], float x, float y, float z) { 302 // The matrix is 303 // -z, 0, x, 0 304 // 0, -z, y, 0 305 // 0, 0, 1, 0 306 // 0, 0, 1, -z 307 Arrays.fill(matrix, 0, 16, 0); 308 matrix[0] = matrix[5] = matrix[15] = -z; 309 matrix[8] = x; 310 matrix[9] = y; 311 matrix[10] = matrix[11] = 1; 312 } 313 314 public static int getBucketId(String path) { 315 return path.toLowerCase().hashCode(); 316 } 317 318 // Return the local path that matches the given bucketId. If no match is 319 // found, return null 320 public static String searchDirForPath(File dir, int bucketId) { 321 File[] files = dir.listFiles(); 322 if (files != null) { 323 for (File file : files) { 324 if (file.isDirectory()) { 325 String path = file.getAbsolutePath(); 326 if (GalleryUtils.getBucketId(path) == bucketId) { 327 return path; 328 } else { 329 path = searchDirForPath(file, bucketId); 330 if (path != null) return path; 331 } 332 } 333 } 334 } 335 return null; 336 } 337 338 // Returns a (localized) string for the given duration (in seconds). 339 public static String formatDuration(final Context context, int duration) { 340 int h = duration / 3600; 341 int m = (duration - h * 3600) / 60; 342 int s = duration - (h * 3600 + m * 60); 343 String durationValue; 344 if (h == 0) { 345 durationValue = String.format(context.getString(R.string.details_ms), m, s); 346 } else { 347 durationValue = String.format(context.getString(R.string.details_hms), h, m, s); 348 } 349 return durationValue; 350 } 351 352 @TargetApi(ApiHelper.VERSION_CODES.HONEYCOMB) 353 public static int determineTypeBits(Context context, Intent intent) { 354 int typeBits = 0; 355 String type = intent.resolveType(context); 356 357 if (MIME_TYPE_ALL.equals(type)) { 358 typeBits = DataManager.INCLUDE_ALL; 359 } else if (MIME_TYPE_IMAGE.equals(type) || 360 DIR_TYPE_IMAGE.equals(type)) { 361 typeBits = DataManager.INCLUDE_IMAGE; 362 } else if (MIME_TYPE_VIDEO.equals(type) || 363 DIR_TYPE_VIDEO.equals(type)) { 364 typeBits = DataManager.INCLUDE_VIDEO; 365 } else { 366 typeBits = DataManager.INCLUDE_ALL; 367 } 368 369 if (ApiHelper.HAS_INTENT_EXTRA_LOCAL_ONLY) { 370 if (intent.getBooleanExtra(Intent.EXTRA_LOCAL_ONLY, false)) { 371 typeBits |= DataManager.INCLUDE_LOCAL_ONLY; 372 } 373 } 374 375 return typeBits; 376 } 377 378 public static int getSelectionModePrompt(int typeBits) { 379 if ((typeBits & DataManager.INCLUDE_VIDEO) != 0) { 380 return (typeBits & DataManager.INCLUDE_IMAGE) == 0 381 ? R.string.select_video 382 : R.string.select_item; 383 } 384 return R.string.select_image; 385 } 386 387 public static boolean hasSpaceForSize(long size) { 388 String state = Environment.getExternalStorageState(); 389 if (!Environment.MEDIA_MOUNTED.equals(state)) { 390 return false; 391 } 392 393 String path = Environment.getExternalStorageDirectory().getPath(); 394 try { 395 StatFs stat = new StatFs(path); 396 return stat.getAvailableBlocks() * (long) stat.getBlockSize() > size; 397 } catch (Exception e) { 398 Log.i(TAG, "Fail to access external storage", e); 399 } 400 return false; 401 } 402 403 public static boolean isPanorama(MediaItem item) { 404 if (item == null) return false; 405 int w = item.getWidth(); 406 int h = item.getHeight(); 407 return (h > 0 && w / h >= 2); 408 } 409 } 410
