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.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;
39 import com.android.gallery3d.R;
40 import com.android.gallery3d.app.Gallery;
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.BitmapScreenNail;
46 import com.android.gallery3d.util.ThreadPool.CancelListener;
47 import com.android.gallery3d.util.ThreadPool.JobContext;
49 import java.util.Arrays;
50 import java.util.List;
51 import java.util.Locale;
53 public class GalleryUtils {
54 private static final String TAG = "GalleryUtils";
55 private static final String MAPS_PACKAGE_NAME = "com.google.android.apps.maps";
56 private static final String MAPS_CLASS_NAME = "com.google.android.maps.MapsActivity";
57 private static final String CAMERA_LAUNCHER_NAME = "com.android.camera.CameraLauncher";
59 public static final String MIME_TYPE_IMAGE = "image/*";
60 public static final String MIME_TYPE_VIDEO = "video/*";
61 public static final String MIME_TYPE_PANORAMA360 = "application/vnd.google.panorama360+jpg";
62 public static final String MIME_TYPE_ALL = "*/*";
64 private static final String DIR_TYPE_IMAGE = "vnd.android.cursor.dir/image";
65 private static final String DIR_TYPE_VIDEO = "vnd.android.cursor.dir/video";
67 private static final String PREFIX_PHOTO_EDITOR_UPDATE = "editor-update-";
68 private static final String PREFIX_HAS_PHOTO_EDITOR = "has-editor-";
70 private static final String KEY_CAMERA_UPDATE = "camera-update";
71 private static final String KEY_HAS_CAMERA = "has-camera";
73 private static float sPixelDensity = -1f;
74 private static boolean sCameraAvailableInitialized = false;
75 private static boolean sCameraAvailable;
77 public static void initialize(Context context) {
78 DisplayMetrics metrics = new DisplayMetrics();
79 WindowManager wm = (WindowManager)
80 context.getSystemService(Context.WINDOW_SERVICE);
81 wm.getDefaultDisplay().getMetrics(metrics);
82 sPixelDensity = metrics.density;
83 Resources r = context.getResources();
84 BitmapScreenNail.setPlaceholderColor(r.getColor(
85 R.color.bitmap_screennail_placeholder));
86 initializeThumbnailSizes(metrics, r);
89 private static void initializeThumbnailSizes(DisplayMetrics metrics, Resources r) {
90 int maxDimensionPixels = Math.max(metrics.heightPixels, metrics.widthPixels);
91 // Never need to completely fill the screen
92 maxDimensionPixels = maxDimensionPixels / 2;
93 MediaItem.setThumbnailSizes(maxDimensionPixels, 200);
94 BitmapScreenNail.setMaxSide(maxDimensionPixels);
97 public static boolean isHighResolution(Context context) {
98 DisplayMetrics metrics = new DisplayMetrics();
99 WindowManager wm = (WindowManager)
100 context.getSystemService(Context.WINDOW_SERVICE);
101 wm.getDefaultDisplay().getMetrics(metrics);
102 return metrics.heightPixels > 2048 || metrics.widthPixels > 2048;
105 public static float[] intColorToFloatARGBArray(int from) {
107 Color.alpha(from) / 255f,
108 Color.red(from) / 255f,
109 Color.green(from) / 255f,
110 Color.blue(from) / 255f
114 public static float dpToPixel(float dp) {
115 return sPixelDensity * dp;
118 public static int dpToPixel(int dp) {
119 return Math.round(dpToPixel((float) dp));
122 public static int meterToPixel(float meter) {
123 // 1 meter = 39.37 inches, 1 inch = 160 dp.
124 return Math.round(dpToPixel(meter * 39.37f * 160));
127 public static byte[] getBytes(String in) {
128 byte[] result = new byte[in.length() * 2];
130 for (char ch : in.toCharArray()) {
131 result[output++] = (byte) (ch & 0xFF);
132 result[output++] = (byte) (ch >> 8);
137 // Below are used the detect using database in the render thread. It only
138 // works most of the time, but that's ok because it's for debugging only.
140 private static volatile Thread sCurrentThread;
141 private static volatile boolean sWarned;
143 public static void setRenderThread() {
144 sCurrentThread = Thread.currentThread();
147 public static void assertNotInRenderThread() {
149 if (Thread.currentThread() == sCurrentThread) {
151 Log.w(TAG, new Throwable("Should not do this in render thread"));
156 private static final double RAD_PER_DEG = Math.PI / 180.0;
157 private static final double EARTH_RADIUS_METERS = 6367000.0;
159 public static double fastDistanceMeters(double latRad1, double lngRad1,
160 double latRad2, double lngRad2) {
161 if ((Math.abs(latRad1 - latRad2) > RAD_PER_DEG)
162 || (Math.abs(lngRad1 - lngRad2) > RAD_PER_DEG)) {
163 return accurateDistanceMeters(latRad1, lngRad1, latRad2, lngRad2);
165 // Approximate sin(x) = x.
166 double sineLat = (latRad1 - latRad2);
168 // Approximate sin(x) = x.
169 double sineLng = (lngRad1 - lngRad2);
171 // Approximate cos(lat1) * cos(lat2) using
172 // cos((lat1 + lat2)/2) ^ 2
173 double cosTerms = Math.cos((latRad1 + latRad2) / 2.0);
174 cosTerms = cosTerms * cosTerms;
175 double trigTerm = sineLat * sineLat + cosTerms * sineLng * sineLng;
176 trigTerm = Math.sqrt(trigTerm);
178 // Approximate arcsin(x) = x
179 return EARTH_RADIUS_METERS * trigTerm;
182 public static double accurateDistanceMeters(double lat1, double lng1,
183 double lat2, double lng2) {
184 double dlat = Math.sin(0.5 * (lat2 - lat1));
185 double dlng = Math.sin(0.5 * (lng2 - lng1));
186 double x = dlat * dlat + dlng * dlng * Math.cos(lat1) * Math.cos(lat2);
187 return (2 * Math.atan2(Math.sqrt(x), Math.sqrt(Math.max(0.0,
188 1.0 - x)))) * EARTH_RADIUS_METERS;
192 public static final double toMile(double meter) {
196 // For debugging, it will block the caller for timeout millis.
197 public static void fakeBusy(JobContext jc, int timeout) {
198 final ConditionVariable cv = new ConditionVariable();
199 jc.setCancelListener(new CancelListener() {
201 public void onCancel() {
206 jc.setCancelListener(null);
209 public static boolean isEditorAvailable(Context context, String mimeType) {
210 int version = PackagesMonitor.getPackagesVersion(context);
212 String updateKey = PREFIX_PHOTO_EDITOR_UPDATE + mimeType;
213 String hasKey = PREFIX_HAS_PHOTO_EDITOR + mimeType;
215 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
216 if (prefs.getInt(updateKey, 0) != version) {
217 PackageManager packageManager = context.getPackageManager();
218 List<ResolveInfo> infos = packageManager.queryIntentActivities(
219 new Intent(Intent.ACTION_EDIT).setType(mimeType), 0);
220 prefs.edit().putInt(updateKey, version)
221 .putBoolean(hasKey, !infos.isEmpty())
225 return prefs.getBoolean(hasKey, true);
228 public static boolean isAnyCameraAvailable(Context context) {
229 int version = PackagesMonitor.getPackagesVersion(context);
230 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
231 if (prefs.getInt(KEY_CAMERA_UPDATE, 0) != version) {
232 PackageManager packageManager = context.getPackageManager();
233 List<ResolveInfo> infos = packageManager.queryIntentActivities(
234 new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA), 0);
235 prefs.edit().putInt(KEY_CAMERA_UPDATE, version)
236 .putBoolean(KEY_HAS_CAMERA, !infos.isEmpty())
239 return prefs.getBoolean(KEY_HAS_CAMERA, true);
242 public static boolean isCameraAvailable(Context context) {
243 if (sCameraAvailableInitialized) return sCameraAvailable;
244 PackageManager pm = context.getPackageManager();
245 ComponentName name = new ComponentName(context, CAMERA_LAUNCHER_NAME);
246 int state = pm.getComponentEnabledSetting(name);
247 sCameraAvailableInitialized = true;
249 (state == PackageManager.COMPONENT_ENABLED_STATE_DEFAULT)
250 || (state == PackageManager.COMPONENT_ENABLED_STATE_ENABLED);
251 return sCameraAvailable;
254 public static void startCameraActivity(Context context) {
255 Intent intent = new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA)
256 .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
257 | Intent.FLAG_ACTIVITY_NEW_TASK);
258 context.startActivity(intent);
261 public static void startGalleryActivity(Context context) {
262 Intent intent = new Intent(context, Gallery.class);
263 context.startActivity(intent);
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);
271 public static String formatLatitudeLongitude(String format, double latitude,
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);
278 public static void showOnMap(Context context, double latitude, double longitude) {
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,
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);
300 public static void setViewPointMatrix(
301 float matrix[], float x, float y, float z) {
307 Arrays.fill(matrix, 0, 16, 0);
308 matrix[0] = matrix[5] = matrix[15] = -z;
311 matrix[10] = matrix[11] = 1;
314 public static int getBucketId(String path) {
315 return path.toLowerCase().hashCode();
318 // Returns a (localized) string for the given duration (in seconds).
319 public static String formatDuration(final Context context, int duration) {
320 int h = duration / 3600;
321 int m = (duration - h * 3600) / 60;
322 int s = duration - (h * 3600 + m * 60);
323 String durationValue;
325 durationValue = String.format(context.getString(R.string.details_ms), m, s);
327 durationValue = String.format(context.getString(R.string.details_hms), h, m, s);
329 return durationValue;
332 @TargetApi(ApiHelper.VERSION_CODES.HONEYCOMB)
333 public static int determineTypeBits(Context context, Intent intent) {
335 String type = intent.resolveType(context);
337 if (MIME_TYPE_ALL.equals(type)) {
338 typeBits = DataManager.INCLUDE_ALL;
339 } else if (MIME_TYPE_IMAGE.equals(type) ||
340 DIR_TYPE_IMAGE.equals(type)) {
341 typeBits = DataManager.INCLUDE_IMAGE;
342 } else if (MIME_TYPE_VIDEO.equals(type) ||
343 DIR_TYPE_VIDEO.equals(type)) {
344 typeBits = DataManager.INCLUDE_VIDEO;
346 typeBits = DataManager.INCLUDE_ALL;
349 if (ApiHelper.HAS_INTENT_EXTRA_LOCAL_ONLY) {
350 if (intent.getBooleanExtra(Intent.EXTRA_LOCAL_ONLY, false)) {
351 typeBits |= DataManager.INCLUDE_LOCAL_ONLY;
358 public static int getSelectionModePrompt(int typeBits) {
359 if ((typeBits & DataManager.INCLUDE_VIDEO) != 0) {
360 return (typeBits & DataManager.INCLUDE_IMAGE) == 0
361 ? R.string.select_video
362 : R.string.select_item;
364 return R.string.select_image;
367 public static boolean hasSpaceForSize(long size) {
368 String state = Environment.getExternalStorageState();
369 if (!Environment.MEDIA_MOUNTED.equals(state)) {
373 String path = Environment.getExternalStorageDirectory().getPath();
375 StatFs stat = new StatFs(path);
376 return stat.getAvailableBlocks() * (long) stat.getBlockSize() > size;
377 } catch (Exception e) {
378 Log.i(TAG, "Fail to access external storage", e);
383 public static boolean isPanorama(MediaItem item) {
384 if (item == null) return false;
385 int w = item.getWidth();
386 int h = item.getHeight();
387 return (h > 0 && w / h >= 2);