1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 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 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 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. 15 */ 16 17 package com.android.launcher2; 18 19 import java.util.ArrayList; 20 import java.util.HashMap; 21 import java.util.HashSet; 22 import java.util.List; 23 24 import android.appwidget.AppWidgetProviderInfo; 25 import android.content.ComponentName; 26 import android.content.pm.ComponentInfo; 27 import android.content.pm.ResolveInfo; 28 import android.graphics.Bitmap; 29 30 /** 31 * Simple cache mechanism for PagedView outlines. 32 */ 33 public class PagedViewIconCache { 34 public static class Key { 35 public enum Type { 36 ApplicationInfoKey, 37 AppWidgetProviderInfoKey, 38 ResolveInfoKey 39 } 40 private final ComponentName mComponentName; 41 private final Type mType; 42 Key(ApplicationInfo info)43 public Key(ApplicationInfo info) { 44 mComponentName = info.componentName; 45 mType = Type.ApplicationInfoKey; 46 } Key(ResolveInfo info)47 public Key(ResolveInfo info) { 48 final ComponentInfo ci = info.activityInfo != null ? info.activityInfo : 49 info.serviceInfo; 50 mComponentName = new ComponentName(ci.packageName, ci.name); 51 mType = Type.ResolveInfoKey; 52 } Key(AppWidgetProviderInfo info)53 public Key(AppWidgetProviderInfo info) { 54 mComponentName = info.provider; 55 mType = Type.AppWidgetProviderInfoKey; 56 } 57 getComponentName()58 private ComponentName getComponentName() { 59 return mComponentName; 60 } isKeyType(Type t)61 public boolean isKeyType(Type t) { 62 return (mType == t); 63 } 64 65 @Override equals(Object o)66 public boolean equals(Object o) { 67 if (o instanceof Key) { 68 Key k = (Key) o; 69 return mComponentName.equals(k.mComponentName); 70 } 71 return super.equals(o); 72 } 73 @Override hashCode()74 public int hashCode() { 75 return getComponentName().hashCode(); 76 } 77 } 78 79 private final HashMap<Key, Bitmap> mIconOutlineCache = new HashMap<Key, Bitmap>(); 80 clear()81 public void clear() { 82 for (Key key : mIconOutlineCache.keySet()) { 83 mIconOutlineCache.get(key).recycle(); 84 } 85 mIconOutlineCache.clear(); 86 } retainAll(HashSet<Key> keysToKeep, Key.Type t)87 private void retainAll(HashSet<Key> keysToKeep, Key.Type t) { 88 HashSet<Key> keysToRemove = new HashSet<Key>(mIconOutlineCache.keySet()); 89 keysToRemove.removeAll(keysToKeep); 90 for (Key key : keysToRemove) { 91 if (key.isKeyType(t)) { 92 mIconOutlineCache.get(key).recycle(); 93 mIconOutlineCache.remove(key); 94 } 95 } 96 } 97 /** Removes all the keys to applications that aren't in the passed in collection */ retainAllApps(ArrayList<ApplicationInfo> keys)98 public void retainAllApps(ArrayList<ApplicationInfo> keys) { 99 HashSet<Key> keysSet = new HashSet<Key>(); 100 for (ApplicationInfo info : keys) { 101 keysSet.add(new Key(info)); 102 } 103 retainAll(keysSet, Key.Type.ApplicationInfoKey); 104 } 105 /** Removes all the keys to shortcuts that aren't in the passed in collection */ retainAllShortcuts(List<ResolveInfo> keys)106 public void retainAllShortcuts(List<ResolveInfo> keys) { 107 HashSet<Key> keysSet = new HashSet<Key>(); 108 for (ResolveInfo info : keys) { 109 keysSet.add(new Key(info)); 110 } 111 retainAll(keysSet, Key.Type.ResolveInfoKey); 112 } 113 /** Removes all the keys to widgets that aren't in the passed in collection */ retainAllAppWidgets(List<AppWidgetProviderInfo> keys)114 public void retainAllAppWidgets(List<AppWidgetProviderInfo> keys) { 115 HashSet<Key> keysSet = new HashSet<Key>(); 116 for (AppWidgetProviderInfo info : keys) { 117 keysSet.add(new Key(info)); 118 } 119 retainAll(keysSet, Key.Type.AppWidgetProviderInfoKey); 120 } addOutline(Key key, Bitmap b)121 public void addOutline(Key key, Bitmap b) { 122 mIconOutlineCache.put(key, b); 123 } removeOutline(Key key)124 public void removeOutline(Key key) { 125 if (mIconOutlineCache.containsKey(key)) { 126 mIconOutlineCache.get(key).recycle(); 127 mIconOutlineCache.remove(key); 128 } 129 } getOutline(Key key)130 public Bitmap getOutline(Key key) { 131 return mIconOutlineCache.get(key); 132 } 133 } 134