1 files changed, 138 insertions, 0 deletions
diff --git a/src/com/android/launcher2/IconCache.java b/src/com/android/launcher2/IconCache.java
new file mode 100644
index 000000000..847cab72e
--- /dev/null
+++ b/src/com/android/launcher2/IconCache.java
@@ -0,0 +1,138 @@
+/*
+ * 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.launcher2;
+
+import android.content.ComponentName;
+import android.content.ContentResolver;
+import android.content.ContentValues;
+import android.content.Intent;
+import android.content.Context;
+import android.content.pm.ActivityInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.content.res.Resources;
+import android.database.Cursor;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.BitmapDrawable;
+import android.net.Uri;
+import android.util.Log;
+import android.os.Process;
+
+import java.lang.ref.WeakReference;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+/**
+ * Cache of application icons.  Icons can be made from any thread.
+ */
+public class IconCache {
+    private static final String TAG = "Launcher.IconCache";
+
+    private static final int INITIAL_ICON_CACHE_CAPACITY = 50;
+
+    private static class CacheEntry {
+        public Bitmap icon;
+        public String title;
+        public Bitmap titleBitmap;
+    }
+
+    private LauncherApplication mContext;
+    private PackageManager mPackageManager;
+    private Utilities.BubbleText mBubble;
+    private final HashMap<ComponentName, CacheEntry> mCache =
+            new HashMap<ComponentName, CacheEntry>(INITIAL_ICON_CACHE_CAPACITY);
+
+    public IconCache(LauncherApplication context) {
+        mContext = context;
+        mPackageManager = context.getPackageManager();
+        mBubble = new Utilities.BubbleText(context);
+    }
+
+    /**
+     * Remove any records for the supplied ComponentName.
+     */
+    public void remove(ComponentName componentName) {
+        synchronized (mCache) {
+            mCache.remove(componentName);
+        }
+    }
+
+    /**
+     * Empty out the cache.
+     */
+    public void flush() {
+        synchronized (mCache) {
+            mCache.clear();
+        }
+    }
+
+    /**
+     * Fill in "application" with the icon and label for "info."
+     */
+    public void getTitleAndIcon(ApplicationInfo application, ResolveInfo info) {
+        synchronized (mCache) {
+            CacheEntry entry = cacheLocked(application.componentName, info);
+
+            application.title = entry.title;
+            application.titleBitmap = entry.titleBitmap;
+            application.iconBitmap = entry.icon;
+        }
+    }
+
+    public Bitmap getIcon(Intent intent) {
+        final ResolveInfo resolveInfo = mPackageManager.resolveActivity(intent, 0);
+        ComponentName component = intent.getComponent();
+
+        if (resolveInfo == null || component == null) {
+            return null;
+        }
+
+        CacheEntry entry = cacheLocked(component, resolveInfo);
+        return entry.icon;
+    }
+
+    public Bitmap getIcon(ComponentName component, ResolveInfo resolveInfo) {
+        if (resolveInfo == null || component == null) {
+            return null;
+        }
+
+        CacheEntry entry = cacheLocked(component, resolveInfo);
+        return entry.icon;
+    }
+
+    private CacheEntry cacheLocked(ComponentName componentName, ResolveInfo info) {
+        CacheEntry entry = mCache.get(componentName);
+        if (entry == null) {
+            entry = new CacheEntry();
+
+            entry.title = info.loadLabel(mPackageManager).toString();
+            if (entry.title == null) {
+                entry.title = info.activityInfo.name;
+            }
+            entry.titleBitmap = mBubble.createTextBitmap(entry.title.toString());
+            entry.icon = Utilities.createIconBitmap(
+                    info.activityInfo.loadIcon(mPackageManager), mContext);
+
+            mCache.put(componentName, entry);
+        }
+        return entry;
+    }
+}
+