/* * Copyright (C) 2008 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.camera; import android.app.Activity; import android.app.AlertDialog; import android.content.ActivityNotFoundException; import android.content.Context; import android.content.DialogInterface; import android.content.DialogInterface.OnClickListener; import android.content.Intent; import android.net.Uri; import android.os.Environment; import android.os.StatFs; import android.provider.MediaStore; import android.provider.MediaStore.Images; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.MenuItem.OnMenuItemClickListener; import java.io.Closeable; /** * A utility class to handle various kinds of menu operations. */ public class MenuHelper { private static final String TAG = "MenuHelper"; public static final int INCLUDE_ALL = 0xFFFFFFFF; public static final int INCLUDE_VIEWPLAY_MENU = (1 << 0); public static final int INCLUDE_SHARE_MENU = (1 << 1); public static final int INCLUDE_SET_MENU = (1 << 2); public static final int INCLUDE_CROP_MENU = (1 << 3); public static final int INCLUDE_DELETE_MENU = (1 << 4); public static final int INCLUDE_ROTATE_MENU = (1 << 5); public static final int INCLUDE_DETAILS_MENU = (1 << 6); public static final int INCLUDE_SHOWMAP_MENU = (1 << 7); public static final int MENU_IMAGE_SHARE = 1; public static final int MENU_IMAGE_SHOWMAP = 2; public static final int POSITION_SWITCH_CAMERA_MODE = 1; public static final int POSITION_GOTO_GALLERY = 2; public static final int POSITION_SWITCH_CAMERA_ID = 3; public static final int NO_STORAGE_ERROR = -1; public static final int CANNOT_STAT_ERROR = -2; public static final String EMPTY_STRING = ""; public static final String JPEG_MIME_TYPE = "image/jpeg"; // valid range is -180f to +180f public static final float INVALID_LATLNG = 255f; /** Activity result code used to report crop results. */ public static final int RESULT_COMMON_MENU_CROP = 490; private static final int NO_ANIMATION = 0; private static final String CAMERA_CLASS = "com.android.camera.Camera"; private static final String VIDEO_CAMERA_CLASS = "com.android.camera.VideoCamera"; public static void closeSilently(Closeable c) { if (c != null) { try { c.close(); } catch (Throwable e) { // ignore } } } public static void confirmAction(Context context, String title, String message, final Runnable action) { OnClickListener listener = new OnClickListener() { public void onClick(DialogInterface dialog, int which) { switch (which) { case DialogInterface.BUTTON_POSITIVE: if (action != null) action.run(); } } }; new AlertDialog.Builder(context) .setIcon(android.R.drawable.ic_dialog_alert) .setTitle(title) .setMessage(message) .setPositiveButton(android.R.string.ok, listener) .setNegativeButton(android.R.string.cancel, listener) .create() .show(); } static void addSwitchModeMenuItem(Menu menu, boolean switchToVideo, final Runnable r) { int labelId = switchToVideo ? R.string.switch_to_video_lable : R.string.switch_to_camera_lable; int iconId = switchToVideo ? R.drawable.ic_menu_camera_video_view : android.R.drawable.ic_menu_camera; MenuItem item = menu.add(Menu.NONE, Menu.NONE, POSITION_SWITCH_CAMERA_MODE, labelId) .setOnMenuItemClickListener(new OnMenuItemClickListener() { public boolean onMenuItemClick(MenuItem item) { r.run(); return true; } }); item.setIcon(iconId); } private static void startCameraActivity(Activity activity, String action, String className) { Intent intent = new Intent(action); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); intent.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT); intent.setClassName(activity.getPackageName(), className); // Keep the camera instance for a while. // This avoids re-opening the camera and saves time. CameraHolder.instance().keep(); try { activity.startActivity(intent); } catch (ActivityNotFoundException e) { intent.setComponent(null); activity.startActivity(intent); } activity.overridePendingTransition(NO_ANIMATION, NO_ANIMATION); } public static void gotoVideoMode(Activity activity) { startCameraActivity(activity, MediaStore.INTENT_ACTION_VIDEO_CAMERA, VIDEO_CAMERA_CLASS); } public static void gotoCameraMode(Activity activity) { startCameraActivity(activity, MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA, CAMERA_CLASS); } public static void gotoCameraImageGallery(Activity activity) { gotoGallery(activity, R.string.gallery_camera_bucket_name, ImageManager.INCLUDE_IMAGES); } public static void gotoCameraVideoGallery(Activity activity) { gotoGallery(activity, R.string.gallery_camera_videos_bucket_name, ImageManager.INCLUDE_VIDEOS); } private static void gotoGallery(Activity activity, int windowTitleId, int mediaTypes) { Uri target = Images.Media.EXTERNAL_CONTENT_URI.buildUpon() .appendQueryParameter("bucketId", ImageManager.CAMERA_IMAGE_BUCKET_ID).build(); Intent intent = new Intent(Intent.ACTION_VIEW, target); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); intent.putExtra("windowTitle", activity.getString(windowTitleId)); intent.putExtra("mediaTypes", mediaTypes); try { activity.startActivity(intent); } catch (ActivityNotFoundException e) { Log.e(TAG, "Could not start gallery activity", e); } } public static int calculatePicturesRemaining() { try { if (!ImageManager.hasStorage()) { return NO_STORAGE_ERROR; } else { String storageDirectory = Environment.getExternalStorageDirectory().toString(); StatFs stat = new StatFs(storageDirectory); final int PICTURE_BYTES = 1500000; float remaining = ((float) stat.getAvailableBlocks() * (float) stat.getBlockSize()) / PICTURE_BYTES; return (int) remaining; } } catch (Exception ex) { // if we can't stat the filesystem then we don't know how many // pictures are remaining. it might be zero but just leave it // blank since we really don't know. Log.e(TAG, "Fail to access sdcard", ex); return CANNOT_STAT_ERROR; } } }