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Diffstat (limited to 'src/com/android/phone/ContactsAsyncHelper.java')
| -rw-r--r-- | src/com/android/phone/ContactsAsyncHelper.java | 358 |
1 files changed, 0 insertions, 358 deletions
diff --git a/src/com/android/phone/ContactsAsyncHelper.java b/src/com/android/phone/ContactsAsyncHelper.java deleted file mode 100644 index 10a69503..00000000 --- a/src/com/android/phone/ContactsAsyncHelper.java +++ /dev/null @@ -1,358 +0,0 @@ -/* - * 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.phone; - -import android.app.Notification; -import android.content.ContentUris; -import android.content.Context; -import android.graphics.Bitmap; -import android.graphics.drawable.BitmapDrawable; -import android.graphics.drawable.Drawable; -import android.net.Uri; -import android.os.Handler; -import android.os.HandlerThread; -import android.os.Looper; -import android.os.Message; -import android.provider.ContactsContract.Contacts; -import android.util.Log; - -import com.android.internal.telephony.CallerInfo; -import com.android.internal.telephony.Connection; - -import java.io.IOException; -import java.io.InputStream; - -/** - * Helper class for loading contacts photo asynchronously. - */ -public class ContactsAsyncHelper { - - private static final boolean DBG = false; - private static final String LOG_TAG = "ContactsAsyncHelper"; - - /** - * Interface for a WorkerHandler result return. - */ - public interface OnImageLoadCompleteListener { - /** - * Called when the image load is complete. - * - * @param token Integer passed in {@link ContactsAsyncHelper#startObtainPhotoAsync(int, - * Context, Uri, OnImageLoadCompleteListener, Object)}. - * @param photo Drawable object obtained by the async load. - * @param photoIcon Bitmap object obtained by the async load. - * @param cookie Object passed in {@link ContactsAsyncHelper#startObtainPhotoAsync(int, - * Context, Uri, OnImageLoadCompleteListener, Object)}. Can be null iff. the original - * cookie is null. - */ - public void onImageLoadComplete(int token, Drawable photo, Bitmap photoIcon, - Object cookie); - } - - // constants - private static final int EVENT_LOAD_IMAGE = 1; - - private final Handler mResultHandler = new Handler() { - /** Called when loading is done. */ - @Override - public void handleMessage(Message msg) { - WorkerArgs args = (WorkerArgs) msg.obj; - switch (msg.arg1) { - case EVENT_LOAD_IMAGE: - if (args.listener != null) { - if (DBG) { - Log.d(LOG_TAG, "Notifying listener: " + args.listener.toString() + - " image: " + args.uri + " completed"); - } - args.listener.onImageLoadComplete(msg.what, args.photo, args.photoIcon, - args.cookie); - } - break; - default: - } - } - }; - - /** Handler run on a worker thread to load photo asynchronously. */ - private static Handler sThreadHandler; - - /** For forcing the system to call its constructor */ - @SuppressWarnings("unused") - private static ContactsAsyncHelper sInstance; - - static { - sInstance = new ContactsAsyncHelper(); - } - - private static final class WorkerArgs { - public Context context; - public Uri uri; - public Drawable photo; - public Bitmap photoIcon; - public Object cookie; - public OnImageLoadCompleteListener listener; - } - - /** - * public inner class to help out the ContactsAsyncHelper callers - * with tracking the state of the CallerInfo Queries and image - * loading. - * - * Logic contained herein is used to remove the race conditions - * that exist as the CallerInfo queries run and mix with the image - * loads, which then mix with the Phone state changes. - */ - public static class ImageTracker { - - // Image display states - public static final int DISPLAY_UNDEFINED = 0; - public static final int DISPLAY_IMAGE = -1; - public static final int DISPLAY_DEFAULT = -2; - - // State of the image on the imageview. - private CallerInfo mCurrentCallerInfo; - private int displayMode; - - public ImageTracker() { - mCurrentCallerInfo = null; - displayMode = DISPLAY_UNDEFINED; - } - - /** - * Used to see if the requested call / connection has a - * different caller attached to it than the one we currently - * have in the CallCard. - */ - public boolean isDifferentImageRequest(CallerInfo ci) { - // note, since the connections are around for the lifetime of the - // call, and the CallerInfo-related items as well, we can - // definitely use a simple != comparison. - return (mCurrentCallerInfo != ci); - } - - public boolean isDifferentImageRequest(Connection connection) { - // if the connection does not exist, see if the - // mCurrentCallerInfo is also null to match. - if (connection == null) { - if (DBG) Log.d(LOG_TAG, "isDifferentImageRequest: connection is null"); - return (mCurrentCallerInfo != null); - } - Object o = connection.getUserData(); - - // if the call does NOT have a callerInfo attached - // then it is ok to query. - boolean runQuery = true; - if (o instanceof CallerInfo) { - runQuery = isDifferentImageRequest((CallerInfo) o); - } - return runQuery; - } - - /** - * Simple setter for the CallerInfo object. - */ - public void setPhotoRequest(CallerInfo ci) { - mCurrentCallerInfo = ci; - } - - /** - * Convenience method used to retrieve the URI - * representing the Photo file recorded in the attached - * CallerInfo Object. - */ - public Uri getPhotoUri() { - if (mCurrentCallerInfo != null) { - return ContentUris.withAppendedId(Contacts.CONTENT_URI, - mCurrentCallerInfo.person_id); - } - return null; - } - - /** - * Simple setter for the Photo state. - */ - public void setPhotoState(int state) { - displayMode = state; - } - - /** - * Simple getter for the Photo state. - */ - public int getPhotoState() { - return displayMode; - } - } - - /** - * Thread worker class that handles the task of opening the stream and loading - * the images. - */ - private class WorkerHandler extends Handler { - public WorkerHandler(Looper looper) { - super(looper); - } - - @Override - public void handleMessage(Message msg) { - WorkerArgs args = (WorkerArgs) msg.obj; - - switch (msg.arg1) { - case EVENT_LOAD_IMAGE: - InputStream inputStream = null; - try { - try { - inputStream = Contacts.openContactPhotoInputStream( - args.context.getContentResolver(), args.uri, true); - } catch (Exception e) { - Log.e(LOG_TAG, "Error opening photo input stream", e); - } - - if (inputStream != null) { - args.photo = Drawable.createFromStream(inputStream, - args.uri.toString()); - - // This assumes Drawable coming from contact database is usually - // BitmapDrawable and thus we can have (down)scaled version of it. - args.photoIcon = getPhotoIconWhenAppropriate(args.context, args.photo); - - if (DBG) { - Log.d(LOG_TAG, "Loading image: " + msg.arg1 + - " token: " + msg.what + " image URI: " + args.uri); - } - } else { - args.photo = null; - args.photoIcon = null; - if (DBG) { - Log.d(LOG_TAG, "Problem with image: " + msg.arg1 + - " token: " + msg.what + " image URI: " + args.uri + - ", using default image."); - } - } - } finally { - if (inputStream != null) { - try { - inputStream.close(); - } catch (IOException e) { - Log.e(LOG_TAG, "Unable to close input stream.", e); - } - } - } - break; - default: - } - - // send the reply to the enclosing class. - Message reply = ContactsAsyncHelper.this.mResultHandler.obtainMessage(msg.what); - reply.arg1 = msg.arg1; - reply.obj = msg.obj; - reply.sendToTarget(); - } - - /** - * Returns a Bitmap object suitable for {@link Notification}'s large icon. This might - * return null when the given Drawable isn't BitmapDrawable, or if the system fails to - * create a scaled Bitmap for the Drawable. - */ - private Bitmap getPhotoIconWhenAppropriate(Context context, Drawable photo) { - if (!(photo instanceof BitmapDrawable)) { - return null; - } - int iconSize = context.getResources() - .getDimensionPixelSize(R.dimen.notification_icon_size); - Bitmap orgBitmap = ((BitmapDrawable) photo).getBitmap(); - int orgWidth = orgBitmap.getWidth(); - int orgHeight = orgBitmap.getHeight(); - int longerEdge = orgWidth > orgHeight ? orgWidth : orgHeight; - // We want downscaled one only when the original icon is too big. - if (longerEdge > iconSize) { - float ratio = ((float) longerEdge) / iconSize; - int newWidth = (int) (orgWidth / ratio); - int newHeight = (int) (orgHeight / ratio); - // If the longer edge is much longer than the shorter edge, the latter may - // become 0 which will cause a crash. - if (newWidth <= 0 || newHeight <= 0) { - Log.w(LOG_TAG, "Photo icon's width or height become 0."); - return null; - } - - // It is sure ratio >= 1.0f in any case and thus the newly created Bitmap - // should be smaller than the original. - return Bitmap.createScaledBitmap(orgBitmap, newWidth, newHeight, true); - } else { - return orgBitmap; - } - } - } - - /** - * Private constructor for static class - */ - private ContactsAsyncHelper() { - HandlerThread thread = new HandlerThread("ContactsAsyncWorker"); - thread.start(); - sThreadHandler = new WorkerHandler(thread.getLooper()); - } - - /** - * Starts an asynchronous image load. After finishing the load, - * {@link OnImageLoadCompleteListener#onImageLoadComplete(int, Drawable, Bitmap, Object)} - * will be called. - * - * @param token Arbitrary integer which will be returned as the first argument of - * {@link OnImageLoadCompleteListener#onImageLoadComplete(int, Drawable, Bitmap, Object)} - * @param context Context object used to do the time-consuming operation. - * @param personUri Uri to be used to fetch the photo - * @param listener Callback object which will be used when the asynchronous load is done. - * Can be null, which means only the asynchronous load is done while there's no way to - * obtain the loaded photos. - * @param cookie Arbitrary object the caller wants to remember, which will become the - * fourth argument of {@link OnImageLoadCompleteListener#onImageLoadComplete(int, Drawable, - * Bitmap, Object)}. Can be null, at which the callback will also has null for the argument. - */ - public static final void startObtainPhotoAsync(int token, Context context, Uri personUri, - OnImageLoadCompleteListener listener, Object cookie) { - // in case the source caller info is null, the URI will be null as well. - // just update using the placeholder image in this case. - if (personUri == null) { - Log.wtf(LOG_TAG, "Uri is missing"); - return; - } - - // Added additional Cookie field in the callee to handle arguments - // sent to the callback function. - - // setup arguments - WorkerArgs args = new WorkerArgs(); - args.cookie = cookie; - args.context = context; - args.uri = personUri; - args.listener = listener; - - // setup message arguments - Message msg = sThreadHandler.obtainMessage(token); - msg.arg1 = EVENT_LOAD_IMAGE; - msg.obj = args; - - if (DBG) Log.d(LOG_TAG, "Begin loading image: " + args.uri + - ", displaying default image for now."); - - // notify the thread to begin working - sThreadHandler.sendMessage(msg); - } - - -} |