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-rw-r--r--src/com/android/gallery3d/util/GalleryUtils.java404
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diff --git a/src/com/android/gallery3d/util/GalleryUtils.java b/src/com/android/gallery3d/util/GalleryUtils.java
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-/*
- * Copyright (C) 2010 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 com.android.gallery3d.util;
-
-import android.annotation.TargetApi;
-import android.content.ActivityNotFoundException;
-import android.content.ComponentName;
-import android.content.Context;
-import android.content.Intent;
-import android.content.SharedPreferences;
-import android.content.pm.PackageManager;
-import android.content.pm.ResolveInfo;
-import android.content.res.Resources;
-import android.graphics.Color;
-import android.net.Uri;
-import android.os.ConditionVariable;
-import android.os.Environment;
-import android.os.StatFs;
-import android.preference.PreferenceManager;
-import android.provider.MediaStore;
-import android.util.DisplayMetrics;
-import android.util.Log;
-import android.view.WindowManager;
-
-import com.android.gallery3d.R;
-import com.android.gallery3d.app.Gallery;
-import com.android.gallery3d.app.PackagesMonitor;
-import com.android.gallery3d.common.ApiHelper;
-import com.android.gallery3d.data.DataManager;
-import com.android.gallery3d.data.MediaItem;
-import com.android.gallery3d.ui.TiledScreenNail;
-import com.android.gallery3d.util.ThreadPool.CancelListener;
-import com.android.gallery3d.util.ThreadPool.JobContext;
-
-import java.io.File;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Locale;
-
-public class GalleryUtils {
- private static final String TAG = "GalleryUtils";
- private static final String MAPS_PACKAGE_NAME = "com.google.android.apps.maps";
- private static final String MAPS_CLASS_NAME = "com.google.android.maps.MapsActivity";
- private static final String CAMERA_LAUNCHER_NAME = "com.android.camera.CameraLauncher";
-
- public static final String MIME_TYPE_IMAGE = "image/*";
- public static final String MIME_TYPE_VIDEO = "video/*";
- public static final String MIME_TYPE_PANORAMA360 = "application/vnd.google.panorama360+jpg";
- public static final String MIME_TYPE_ALL = "*/*";
-
- private static final String DIR_TYPE_IMAGE = "vnd.android.cursor.dir/image";
- private static final String DIR_TYPE_VIDEO = "vnd.android.cursor.dir/video";
-
- private static final String PREFIX_PHOTO_EDITOR_UPDATE = "editor-update-";
- private static final String PREFIX_HAS_PHOTO_EDITOR = "has-editor-";
-
- private static final String KEY_CAMERA_UPDATE = "camera-update";
- private static final String KEY_HAS_CAMERA = "has-camera";
-
- private static float sPixelDensity = -1f;
- private static boolean sCameraAvailableInitialized = false;
- private static boolean sCameraAvailable;
-
- public static void initialize(Context context) {
- DisplayMetrics metrics = new DisplayMetrics();
- WindowManager wm = (WindowManager)
- context.getSystemService(Context.WINDOW_SERVICE);
- wm.getDefaultDisplay().getMetrics(metrics);
- sPixelDensity = metrics.density;
- Resources r = context.getResources();
- TiledScreenNail.setPlaceholderColor(r.getColor(
- R.color.bitmap_screennail_placeholder));
- initializeThumbnailSizes(metrics, r);
- }
-
- private static void initializeThumbnailSizes(DisplayMetrics metrics, Resources r) {
- int maxPixels = Math.max(metrics.heightPixels, metrics.widthPixels);
-
- // For screen-nails, we never need to completely fill the screen
- MediaItem.setThumbnailSizes(maxPixels / 2, maxPixels / 5);
- TiledScreenNail.setMaxSide(maxPixels / 2);
- }
-
- public static float[] intColorToFloatARGBArray(int from) {
- return new float[] {
- Color.alpha(from) / 255f,
- Color.red(from) / 255f,
- Color.green(from) / 255f,
- Color.blue(from) / 255f
- };
- }
-
- public static float dpToPixel(float dp) {
- return sPixelDensity * dp;
- }
-
- public static int dpToPixel(int dp) {
- return Math.round(dpToPixel((float) dp));
- }
-
- public static int meterToPixel(float meter) {
- // 1 meter = 39.37 inches, 1 inch = 160 dp.
- return Math.round(dpToPixel(meter * 39.37f * 160));
- }
-
- public static byte[] getBytes(String in) {
- byte[] result = new byte[in.length() * 2];
- int output = 0;
- for (char ch : in.toCharArray()) {
- result[output++] = (byte) (ch & 0xFF);
- result[output++] = (byte) (ch >> 8);
- }
- return result;
- }
-
- // Below are used the detect using database in the render thread. It only
- // works most of the time, but that's ok because it's for debugging only.
-
- private static volatile Thread sCurrentThread;
- private static volatile boolean sWarned;
-
- public static void setRenderThread() {
- sCurrentThread = Thread.currentThread();
- }
-
- public static void assertNotInRenderThread() {
- if (!sWarned) {
- if (Thread.currentThread() == sCurrentThread) {
- sWarned = true;
- Log.w(TAG, new Throwable("Should not do this in render thread"));
- }
- }
- }
-
- private static final double RAD_PER_DEG = Math.PI / 180.0;
- private static final double EARTH_RADIUS_METERS = 6367000.0;
-
- public static double fastDistanceMeters(double latRad1, double lngRad1,
- double latRad2, double lngRad2) {
- if ((Math.abs(latRad1 - latRad2) > RAD_PER_DEG)
- || (Math.abs(lngRad1 - lngRad2) > RAD_PER_DEG)) {
- return accurateDistanceMeters(latRad1, lngRad1, latRad2, lngRad2);
- }
- // Approximate sin(x) = x.
- double sineLat = (latRad1 - latRad2);
-
- // Approximate sin(x) = x.
- double sineLng = (lngRad1 - lngRad2);
-
- // Approximate cos(lat1) * cos(lat2) using
- // cos((lat1 + lat2)/2) ^ 2
- double cosTerms = Math.cos((latRad1 + latRad2) / 2.0);
- cosTerms = cosTerms * cosTerms;
- double trigTerm = sineLat * sineLat + cosTerms * sineLng * sineLng;
- trigTerm = Math.sqrt(trigTerm);
-
- // Approximate arcsin(x) = x
- return EARTH_RADIUS_METERS * trigTerm;
- }
-
- public static double accurateDistanceMeters(double lat1, double lng1,
- double lat2, double lng2) {
- double dlat = Math.sin(0.5 * (lat2 - lat1));
- double dlng = Math.sin(0.5 * (lng2 - lng1));
- double x = dlat * dlat + dlng * dlng * Math.cos(lat1) * Math.cos(lat2);
- return (2 * Math.atan2(Math.sqrt(x), Math.sqrt(Math.max(0.0,
- 1.0 - x)))) * EARTH_RADIUS_METERS;
- }
-
-
- public static final double toMile(double meter) {
- return meter / 1609;
- }
-
- // For debugging, it will block the caller for timeout millis.
- public static void fakeBusy(JobContext jc, int timeout) {
- final ConditionVariable cv = new ConditionVariable();
- jc.setCancelListener(new CancelListener() {
- @Override
- public void onCancel() {
- cv.open();
- }
- });
- cv.block(timeout);
- jc.setCancelListener(null);
- }
-
- public static boolean isEditorAvailable(Context context, String mimeType) {
- int version = PackagesMonitor.getPackagesVersion(context);
-
- String updateKey = PREFIX_PHOTO_EDITOR_UPDATE + mimeType;
- String hasKey = PREFIX_HAS_PHOTO_EDITOR + mimeType;
-
- SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
- if (prefs.getInt(updateKey, 0) != version) {
- PackageManager packageManager = context.getPackageManager();
- List<ResolveInfo> infos = packageManager.queryIntentActivities(
- new Intent(Intent.ACTION_EDIT).setType(mimeType), 0);
- prefs.edit().putInt(updateKey, version)
- .putBoolean(hasKey, !infos.isEmpty())
- .commit();
- }
-
- return prefs.getBoolean(hasKey, true);
- }
-
- public static boolean isAnyCameraAvailable(Context context) {
- int version = PackagesMonitor.getPackagesVersion(context);
- SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
- if (prefs.getInt(KEY_CAMERA_UPDATE, 0) != version) {
- PackageManager packageManager = context.getPackageManager();
- List<ResolveInfo> infos = packageManager.queryIntentActivities(
- new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA), 0);
- prefs.edit().putInt(KEY_CAMERA_UPDATE, version)
- .putBoolean(KEY_HAS_CAMERA, !infos.isEmpty())
- .commit();
- }
- return prefs.getBoolean(KEY_HAS_CAMERA, true);
- }
-
- public static boolean isCameraAvailable(Context context) {
- if (sCameraAvailableInitialized) return sCameraAvailable;
- PackageManager pm = context.getPackageManager();
- ComponentName name = new ComponentName(context, CAMERA_LAUNCHER_NAME);
- int state = pm.getComponentEnabledSetting(name);
- sCameraAvailableInitialized = true;
- sCameraAvailable =
- (state == PackageManager.COMPONENT_ENABLED_STATE_DEFAULT)
- || (state == PackageManager.COMPONENT_ENABLED_STATE_ENABLED);
- return sCameraAvailable;
- }
-
- public static void startCameraActivity(Context context) {
- Intent intent = new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA)
- .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
- | Intent.FLAG_ACTIVITY_NEW_TASK);
- context.startActivity(intent);
- }
-
- public static void startGalleryActivity(Context context) {
- Intent intent = new Intent(context, Gallery.class)
- .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
- | Intent.FLAG_ACTIVITY_NEW_TASK);
- context.startActivity(intent);
- }
-
- public static boolean isValidLocation(double latitude, double longitude) {
- // TODO: change || to && after we fix the default location issue
- return (latitude != MediaItem.INVALID_LATLNG || longitude != MediaItem.INVALID_LATLNG);
- }
-
- public static String formatLatitudeLongitude(String format, double latitude,
- double longitude) {
- // We need to specify the locale otherwise it may go wrong in some language
- // (e.g. Locale.FRENCH)
- return String.format(Locale.ENGLISH, format, latitude, longitude);
- }
-
- public static void showOnMap(Context context, double latitude, double longitude) {
- try {
- // We don't use "geo:latitude,longitude" because it only centers
- // the MapView to the specified location, but we need a marker
- // for further operations (routing to/from).
- // The q=(lat, lng) syntax is suggested by geo-team.
- String uri = formatLatitudeLongitude("http://maps.google.com/maps?f=q&q=(%f,%f)",
- latitude, longitude);
- ComponentName compName = new ComponentName(MAPS_PACKAGE_NAME,
- MAPS_CLASS_NAME);
- Intent mapsIntent = new Intent(Intent.ACTION_VIEW,
- Uri.parse(uri)).setComponent(compName);
- context.startActivity(mapsIntent);
- } catch (ActivityNotFoundException e) {
- // Use the "geo intent" if no GMM is installed
- Log.e(TAG, "GMM activity not found!", e);
- String url = formatLatitudeLongitude("geo:%f,%f", latitude, longitude);
- Intent mapsIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
- context.startActivity(mapsIntent);
- }
- }
-
- public static void setViewPointMatrix(
- float matrix[], float x, float y, float z) {
- // The matrix is
- // -z, 0, x, 0
- // 0, -z, y, 0
- // 0, 0, 1, 0
- // 0, 0, 1, -z
- Arrays.fill(matrix, 0, 16, 0);
- matrix[0] = matrix[5] = matrix[15] = -z;
- matrix[8] = x;
- matrix[9] = y;
- matrix[10] = matrix[11] = 1;
- }
-
- public static int getBucketId(String path) {
- return path.toLowerCase().hashCode();
- }
-
- // Return the local path that matches the given bucketId. If no match is
- // found, return null
- public static String searchDirForPath(File dir, int bucketId) {
- File[] files = dir.listFiles();
- if (files != null) {
- for (File file : files) {
- if (file.isDirectory()) {
- String path = file.getAbsolutePath();
- if (GalleryUtils.getBucketId(path) == bucketId) {
- return path;
- } else {
- path = searchDirForPath(file, bucketId);
- if (path != null) return path;
- }
- }
- }
- }
- return null;
- }
-
- // Returns a (localized) string for the given duration (in seconds).
- public static String formatDuration(final Context context, int duration) {
- int h = duration / 3600;
- int m = (duration - h * 3600) / 60;
- int s = duration - (h * 3600 + m * 60);
- String durationValue;
- if (h == 0) {
- durationValue = String.format(context.getString(R.string.details_ms), m, s);
- } else {
- durationValue = String.format(context.getString(R.string.details_hms), h, m, s);
- }
- return durationValue;
- }
-
- @TargetApi(ApiHelper.VERSION_CODES.HONEYCOMB)
- public static int determineTypeBits(Context context, Intent intent) {
- int typeBits = 0;
- String type = intent.resolveType(context);
-
- if (MIME_TYPE_ALL.equals(type)) {
- typeBits = DataManager.INCLUDE_ALL;
- } else if (MIME_TYPE_IMAGE.equals(type) ||
- DIR_TYPE_IMAGE.equals(type)) {
- typeBits = DataManager.INCLUDE_IMAGE;
- } else if (MIME_TYPE_VIDEO.equals(type) ||
- DIR_TYPE_VIDEO.equals(type)) {
- typeBits = DataManager.INCLUDE_VIDEO;
- } else {
- typeBits = DataManager.INCLUDE_ALL;
- }
-
- if (ApiHelper.HAS_INTENT_EXTRA_LOCAL_ONLY) {
- if (intent.getBooleanExtra(Intent.EXTRA_LOCAL_ONLY, false)) {
- typeBits |= DataManager.INCLUDE_LOCAL_ONLY;
- }
- }
-
- return typeBits;
- }
-
- public static int getSelectionModePrompt(int typeBits) {
- if ((typeBits & DataManager.INCLUDE_VIDEO) != 0) {
- return (typeBits & DataManager.INCLUDE_IMAGE) == 0
- ? R.string.select_video
- : R.string.select_item;
- }
- return R.string.select_image;
- }
-
- public static boolean hasSpaceForSize(long size) {
- String state = Environment.getExternalStorageState();
- if (!Environment.MEDIA_MOUNTED.equals(state)) {
- return false;
- }
-
- String path = Environment.getExternalStorageDirectory().getPath();
- try {
- StatFs stat = new StatFs(path);
- return stat.getAvailableBlocks() * (long) stat.getBlockSize() > size;
- } catch (Exception e) {
- Log.i(TAG, "Fail to access external storage", e);
- }
- return false;
- }
-
- public static boolean isPanorama(MediaItem item) {
- if (item == null) return false;
- int w = item.getWidth();
- int h = item.getHeight();
- return (h > 0 && w / h >= 2);
- }
-}