| /* |
| * Copyright (C) 2018 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.launcher3.icons; |
| |
| import android.content.Context; |
| |
| /** |
| * Wrapper class to provide access to {@link BaseIconFactory} and also to provide pool of this class |
| * that are threadsafe. |
| */ |
| public class IconFactory extends BaseIconFactory { |
| |
| private static final Object sPoolSync = new Object(); |
| private static IconFactory sPool; |
| private static int sPoolId = 0; |
| |
| /** |
| * Return a new Message instance from the global pool. Allows us to |
| * avoid allocating new objects in many cases. |
| */ |
| public static IconFactory obtain(Context context) { |
| int poolId; |
| synchronized (sPoolSync) { |
| if (sPool != null) { |
| IconFactory m = sPool; |
| sPool = m.next; |
| m.next = null; |
| return m; |
| } |
| poolId = sPoolId; |
| } |
| |
| return new IconFactory(context, |
| context.getResources().getConfiguration().densityDpi, |
| context.getResources().getDimensionPixelSize(R.dimen.default_icon_bitmap_size), |
| poolId); |
| } |
| |
| public static void clearPool() { |
| synchronized (sPoolSync) { |
| sPool = null; |
| sPoolId++; |
| } |
| } |
| |
| private final int mPoolId; |
| |
| private IconFactory next; |
| |
| private IconFactory(Context context, int fillResIconDpi, int iconBitmapSize, int poolId) { |
| super(context, fillResIconDpi, iconBitmapSize); |
| mPoolId = poolId; |
| } |
| |
| /** |
| * Recycles a LauncherIcons that may be in-use. |
| */ |
| public void recycle() { |
| synchronized (sPoolSync) { |
| if (sPoolId != mPoolId) { |
| return; |
| } |
| // Clear any temporary state variables |
| clear(); |
| |
| next = sPool; |
| sPool = this; |
| } |
| } |
| |
| @Override |
| public void close() { |
| recycle(); |
| } |
| } |