2 * Copyright (C) 2010 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package com.android.gallery3d.util;
19 import android.app.Activity;
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.net.Uri;
29 import android.os.ConditionVariable;
30 import android.os.Environment;
31 import android.os.StatFs;
32 import android.preference.PreferenceManager;
33 import android.provider.MediaStore;
34 import android.util.DisplayMetrics;
35 import android.util.Log;
36 import android.view.WindowManager;
38 import com.android.gallery3d.R;
39 import com.android.gallery3d.app.PackagesMonitor;
40 import com.android.gallery3d.data.DataManager;
41 import com.android.gallery3d.data.MediaItem;
42 import com.android.gallery3d.util.ThreadPool.CancelListener;
43 import com.android.gallery3d.util.ThreadPool.JobContext;
45 import java.util.Arrays;
46 import java.util.List;
47 import java.util.Locale;
49 public class GalleryUtils {
50 private static final String TAG = "GalleryUtils";
51 private static final String MAPS_PACKAGE_NAME = "com.google.android.apps.maps";
52 private static final String MAPS_CLASS_NAME = "com.google.android.maps.MapsActivity";
53 private static final String CAMERA_LAUNCHER_NAME = "com.android.camera.CameraLauncher";
55 private static final String MIME_TYPE_IMAGE = "image/*";
56 private static final String MIME_TYPE_VIDEO = "video/*";
57 private static final String MIME_TYPE_ALL = "*/*";
58 private static final String DIR_TYPE_IMAGE = "vnd.android.cursor.dir/image";
59 private static final String DIR_TYPE_VIDEO = "vnd.android.cursor.dir/video";
61 private static final String PREFIX_PHOTO_EDITOR_UPDATE = "editor-update-";
62 private static final String PREFIX_HAS_PHOTO_EDITOR = "has-editor-";
64 private static final String KEY_CAMERA_UPDATE = "camera-update";
65 private static final String KEY_HAS_CAMERA = "has-camera";
67 private static float sPixelDensity = -1f;
68 private static boolean sCameraAvailableInitialized = false;
69 private static boolean sCameraAvailable;
71 public static void initialize(Context context) {
72 if (sPixelDensity < 0) {
73 DisplayMetrics metrics = new DisplayMetrics();
74 WindowManager wm = (WindowManager)
75 context.getSystemService(Context.WINDOW_SERVICE);
76 wm.getDefaultDisplay().getMetrics(metrics);
77 sPixelDensity = metrics.density;
81 public static float dpToPixel(float dp) {
82 return sPixelDensity * dp;
85 public static int dpToPixel(int dp) {
86 return Math.round(dpToPixel((float) dp));
89 public static int meterToPixel(float meter) {
90 // 1 meter = 39.37 inches, 1 inch = 160 dp.
91 return Math.round(dpToPixel(meter * 39.37f * 160));
94 public static byte[] getBytes(String in) {
95 byte[] result = new byte[in.length() * 2];
97 for (char ch : in.toCharArray()) {
98 result[output++] = (byte) (ch & 0xFF);
99 result[output++] = (byte) (ch >> 8);
104 // Below are used the detect using database in the render thread. It only
105 // works most of the time, but that's ok because it's for debugging only.
107 private static volatile Thread sCurrentThread;
108 private static volatile boolean sWarned;
110 public static void setRenderThread() {
111 sCurrentThread = Thread.currentThread();
114 public static void assertNotInRenderThread() {
116 if (Thread.currentThread() == sCurrentThread) {
118 Log.w(TAG, new Throwable("Should not do this in render thread"));
123 private static final double RAD_PER_DEG = Math.PI / 180.0;
124 private static final double EARTH_RADIUS_METERS = 6367000.0;
126 public static double fastDistanceMeters(double latRad1, double lngRad1,
127 double latRad2, double lngRad2) {
128 if ((Math.abs(latRad1 - latRad2) > RAD_PER_DEG)
129 || (Math.abs(lngRad1 - lngRad2) > RAD_PER_DEG)) {
130 return accurateDistanceMeters(latRad1, lngRad1, latRad2, lngRad2);
132 // Approximate sin(x) = x.
133 double sineLat = (latRad1 - latRad2);
135 // Approximate sin(x) = x.
136 double sineLng = (lngRad1 - lngRad2);
138 // Approximate cos(lat1) * cos(lat2) using
139 // cos((lat1 + lat2)/2) ^ 2
140 double cosTerms = Math.cos((latRad1 + latRad2) / 2.0);
141 cosTerms = cosTerms * cosTerms;
142 double trigTerm = sineLat * sineLat + cosTerms * sineLng * sineLng;
143 trigTerm = Math.sqrt(trigTerm);
145 // Approximate arcsin(x) = x
146 return EARTH_RADIUS_METERS * trigTerm;
149 public static double accurateDistanceMeters(double lat1, double lng1,
150 double lat2, double lng2) {
151 double dlat = Math.sin(0.5 * (lat2 - lat1));
152 double dlng = Math.sin(0.5 * (lng2 - lng1));
153 double x = dlat * dlat + dlng * dlng * Math.cos(lat1) * Math.cos(lat2);
154 return (2 * Math.atan2(Math.sqrt(x), Math.sqrt(Math.max(0.0,
155 1.0 - x)))) * EARTH_RADIUS_METERS;
159 public static final double toMile(double meter) {
163 // For debugging, it will block the caller for timeout millis.
164 public static void fakeBusy(JobContext jc, int timeout) {
165 final ConditionVariable cv = new ConditionVariable();
166 jc.setCancelListener(new CancelListener() {
167 public void onCancel() {
172 jc.setCancelListener(null);
175 public static boolean isEditorAvailable(Context context, String mimeType) {
176 int version = PackagesMonitor.getPackagesVersion(context);
178 String updateKey = PREFIX_PHOTO_EDITOR_UPDATE + mimeType;
179 String hasKey = PREFIX_HAS_PHOTO_EDITOR + mimeType;
181 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
182 if (prefs.getInt(updateKey, 0) != version) {
183 PackageManager packageManager = context.getPackageManager();
184 List<ResolveInfo> infos = packageManager.queryIntentActivities(
185 new Intent(Intent.ACTION_EDIT).setType(mimeType), 0);
186 prefs.edit().putInt(updateKey, version)
187 .putBoolean(hasKey, !infos.isEmpty())
191 return prefs.getBoolean(hasKey, true);
194 public static boolean isAnyCameraAvailable(Context context) {
195 int version = PackagesMonitor.getPackagesVersion(context);
196 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
197 if (prefs.getInt(KEY_CAMERA_UPDATE, 0) != version) {
198 PackageManager packageManager = context.getPackageManager();
199 List<ResolveInfo> infos = packageManager.queryIntentActivities(
200 new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA), 0);
201 prefs.edit().putInt(KEY_CAMERA_UPDATE, version)
202 .putBoolean(KEY_HAS_CAMERA, !infos.isEmpty())
205 return prefs.getBoolean(KEY_HAS_CAMERA, true);
208 public static boolean isCameraAvailable(Context context) {
209 if (sCameraAvailableInitialized) return sCameraAvailable;
210 PackageManager pm = context.getPackageManager();
211 ComponentName name = new ComponentName(context, CAMERA_LAUNCHER_NAME);
212 int state = pm.getComponentEnabledSetting(name);
213 sCameraAvailableInitialized = true;
215 (state == PackageManager.COMPONENT_ENABLED_STATE_DEFAULT)
216 || (state == PackageManager.COMPONENT_ENABLED_STATE_ENABLED);
217 return sCameraAvailable;
220 public static void startCameraActivity(Context context) {
221 Intent intent = new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA)
222 .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
223 | Intent.FLAG_ACTIVITY_NEW_TASK);
224 context.startActivity(intent);
227 public static boolean isValidLocation(double latitude, double longitude) {
228 // TODO: change || to && after we fix the default location issue
229 return (latitude != MediaItem.INVALID_LATLNG || longitude != MediaItem.INVALID_LATLNG);
232 public static String formatLatitudeLongitude(String format, double latitude,
234 // We need to specify the locale otherwise it may go wrong in some language
235 // (e.g. Locale.FRENCH)
236 return String.format(Locale.ENGLISH, format, latitude, longitude);
239 public static void showOnMap(Context context, double latitude, double longitude) {
241 // We don't use "geo:latitude,longitude" because it only centers
242 // the MapView to the specified location, but we need a marker
243 // for further operations (routing to/from).
244 // The q=(lat, lng) syntax is suggested by geo-team.
245 String uri = formatLatitudeLongitude("http://maps.google.com/maps?f=q&q=(%f,%f)",
246 latitude, longitude);
247 ComponentName compName = new ComponentName(MAPS_PACKAGE_NAME,
249 Intent mapsIntent = new Intent(Intent.ACTION_VIEW,
250 Uri.parse(uri)).setComponent(compName);
251 context.startActivity(mapsIntent);
252 } catch (ActivityNotFoundException e) {
253 // Use the "geo intent" if no GMM is installed
254 Log.e(TAG, "GMM activity not found!", e);
255 String url = formatLatitudeLongitude("geo:%f,%f", latitude, longitude);
256 Intent mapsIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
257 context.startActivity(mapsIntent);
261 public static void setViewPointMatrix(
262 float matrix[], float x, float y, float z) {
268 Arrays.fill(matrix, 0, 16, 0);
269 matrix[0] = matrix[5] = matrix[15] = -z;
272 matrix[10] = matrix[11] = 1;
275 public static int getBucketId(String path) {
276 return path.toLowerCase().hashCode();
279 // Returns a (localized) string for the given duration (in seconds).
280 public static String formatDuration(final Context context, int duration) {
281 int h = duration / 3600;
282 int m = (duration - h * 3600) / 60;
283 int s = duration - (h * 3600 + m * 60);
284 String durationValue;
286 durationValue = String.format(context.getString(R.string.details_ms), m, s);
288 durationValue = String.format(context.getString(R.string.details_hms), h, m, s);
290 return durationValue;
293 public static int determineTypeBits(Context context, Intent intent) {
295 String type = intent.resolveType(context);
297 if (MIME_TYPE_ALL.equals(type)) {
298 typeBits = DataManager.INCLUDE_ALL;
299 } else if (MIME_TYPE_IMAGE.equals(type) ||
300 DIR_TYPE_IMAGE.equals(type)) {
301 typeBits = DataManager.INCLUDE_IMAGE;
302 } else if (MIME_TYPE_VIDEO.equals(type) ||
303 DIR_TYPE_VIDEO.equals(type)) {
304 typeBits = DataManager.INCLUDE_VIDEO;
306 typeBits = DataManager.INCLUDE_ALL;
309 if (intent.getBooleanExtra(Intent.EXTRA_LOCAL_ONLY, false)) {
310 typeBits |= DataManager.INCLUDE_LOCAL_ONLY;
316 public static int getSelectionModePrompt(int typeBits) {
317 if ((typeBits & DataManager.INCLUDE_VIDEO) != 0) {
318 return (typeBits & DataManager.INCLUDE_IMAGE) == 0
319 ? R.string.select_video
320 : R.string.select_item;
322 return R.string.select_image;
325 public static boolean hasSpaceForSize(long size) {
326 String state = Environment.getExternalStorageState();
327 if (!Environment.MEDIA_MOUNTED.equals(state)) {
331 String path = Environment.getExternalStorageDirectory().getPath();
333 StatFs stat = new StatFs(path);
334 return stat.getAvailableBlocks() * (long) stat.getBlockSize() > size;
335 } catch (Exception e) {
336 Log.i(TAG, "Fail to access external storage", e);
341 public static boolean isPanorama(MediaItem item) {
342 if (item == null) return false;
343 int w = item.getWidth();
344 int h = item.getHeight();
345 return (h > 0 && w / h >= 2);