Lazy loading high res icons
> Loading low-res icons for icons which are not visible on
the homescreen.
Change-Id: I8ac7bf09f6030ed554cb60a4cd402f3f36ffe12b
diff --git a/src/com/android/launcher3/IconCache.java b/src/com/android/launcher3/IconCache.java
index 43f838e..57d23a7 100644
--- a/src/com/android/launcher3/IconCache.java
+++ b/src/com/android/launcher3/IconCache.java
@@ -31,8 +31,10 @@
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
+import android.os.Handler;
import android.text.TextUtils;
import android.util.Log;
@@ -62,10 +64,13 @@
private static final boolean DEBUG = false;
+ private static final int LOW_RES_SCALE_FACTOR = 8;
+
private static class CacheEntry {
public Bitmap icon;
public CharSequence title;
public CharSequence contentDescription;
+ public boolean isLowResIcon;
}
private final HashMap<UserHandleCompat, Bitmap> mDefaultIcons =
@@ -79,6 +84,8 @@
private final int mIconDpi;
private final IconDB mIconDb;
+ private final Handler mWorkerHandler;
+
public IconCache(Context context) {
ActivityManager activityManager =
(ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
@@ -89,6 +96,8 @@
mLauncherApps = LauncherAppsCompat.getInstance(mContext);
mIconDpi = activityManager.getLauncherLargeIconDensity();
mIconDb = new IconDB(context);
+
+ mWorkerHandler = new Handler(LauncherModel.sWorkerThread.getLooper());
}
private Drawable getFullResDefaultActivityIcon() {
@@ -306,10 +315,7 @@
entry.contentDescription = mUserManager.getBadgedLabelForUser(entry.title, app.getUser());
mCache.put(new ComponentKey(app.getComponentName(), app.getUser()), entry);
- ContentValues values = new ContentValues();
- values.put(IconDB.COLUMN_ICON, ItemInfo.flattenBitmap(entry.icon));
- values.put(IconDB.COLUMN_LABEL, entry.title.toString());
- return values;
+ return mIconDb.newContentValues(entry.icon, entry.title.toString());
}
@@ -335,16 +341,52 @@
}
/**
+ * Fetches high-res icon for the provided ItemInfo and updates the caller when done.
+ * @return a request ID that can be used to cancel the request.
+ */
+ public IconLoadRequest updateIconInBackground(final BubbleTextView caller, final ItemInfo info) {
+ Runnable request = new Runnable() {
+
+ @Override
+ public void run() {
+ if (info instanceof AppInfo) {
+ getTitleAndIcon((AppInfo) info, null, false);
+ } else if (info instanceof ShortcutInfo) {
+ ShortcutInfo st = (ShortcutInfo) info;
+ getTitleAndIcon(st,
+ st.promisedIntent != null ? st.promisedIntent : st.intent,
+ st.user, false);
+ }
+ caller.post(new Runnable() {
+
+ @Override
+ public void run() {
+ caller.reapplyItemInfo(info);
+ }
+ });
+ }
+ };
+ mWorkerHandler.post(request);
+ return new IconLoadRequest(request, mWorkerHandler);
+ }
+
+ /**
* Fill in "application" with the icon and label for "info."
*/
- public synchronized void getTitleAndIcon(AppInfo application, LauncherActivityInfoCompat info) {
- CacheEntry entry = cacheLocked(application.componentName, info, info.getUser(), false);
-
+ public synchronized void getTitleAndIcon(AppInfo application,
+ LauncherActivityInfoCompat info, boolean useLowResIcon) {
+ CacheEntry entry = cacheLocked(application.componentName, info,
+ info == null ? application.user : info.getUser(),
+ false, useLowResIcon);
application.title = entry.title;
application.iconBitmap = entry.icon;
application.contentDescription = entry.contentDescription;
+ application.usingLowResIcon = entry.isLowResIcon;
}
+ /**
+ * Returns a high res icon for the given intent and user
+ */
public synchronized Bitmap getIcon(Intent intent, UserHandleCompat user) {
ComponentName component = intent.getComponent();
// null info means not installed, but if we have a component from the intent then
@@ -354,7 +396,7 @@
}
LauncherActivityInfoCompat launcherActInfo = mLauncherApps.resolveActivity(intent, user);
- CacheEntry entry = cacheLocked(component, launcherActInfo, user, true);
+ CacheEntry entry = cacheLocked(component, launcherActInfo, user, true, true);
return entry.icon;
}
@@ -363,7 +405,7 @@
* corresponding activity is not found, it reverts to the package icon.
*/
public synchronized void getTitleAndIcon(ShortcutInfo shortcutInfo, Intent intent,
- UserHandleCompat user) {
+ UserHandleCompat user, boolean useLowResIcon) {
ComponentName component = intent.getComponent();
// null info means not installed, but if we have a component from the intent then
// we should still look in the cache for restored app icons.
@@ -371,9 +413,10 @@
shortcutInfo.setIcon(getDefaultIcon(user));
shortcutInfo.title = "";
shortcutInfo.usingFallbackIcon = true;
+ shortcutInfo.usingLowResIcon = false;
} else {
LauncherActivityInfoCompat info = mLauncherApps.resolveActivity(intent, user);
- getTitleAndIcon(shortcutInfo, component, info, user, true);
+ getTitleAndIcon(shortcutInfo, component, info, user, true, useLowResIcon);
}
}
@@ -382,11 +425,12 @@
*/
public synchronized void getTitleAndIcon(
ShortcutInfo shortcutInfo, ComponentName component, LauncherActivityInfoCompat info,
- UserHandleCompat user, boolean usePkgIcon) {
- CacheEntry entry = cacheLocked(component, info, user, usePkgIcon);
+ UserHandleCompat user, boolean usePkgIcon, boolean useLowResIcon) {
+ CacheEntry entry = cacheLocked(component, info, user, usePkgIcon, useLowResIcon);
shortcutInfo.setIcon(entry.icon);
shortcutInfo.title = entry.title;
shortcutInfo.usingFallbackIcon = isDefaultIcon(entry.icon, user);
+ shortcutInfo.usingLowResIcon = entry.isLowResIcon;
}
public synchronized Bitmap getDefaultIcon(UserHandleCompat user) {
@@ -405,15 +449,15 @@
* This method is not thread safe, it must be called from a synchronized method.
*/
private CacheEntry cacheLocked(ComponentName componentName, LauncherActivityInfoCompat info,
- UserHandleCompat user, boolean usePackageIcon) {
+ UserHandleCompat user, boolean usePackageIcon, boolean useLowResIcon) {
ComponentKey cacheKey = new ComponentKey(componentName, user);
CacheEntry entry = mCache.get(cacheKey);
- if (entry == null) {
+ if (entry == null || (entry.isLowResIcon && !useLowResIcon)) {
entry = new CacheEntry();
mCache.put(cacheKey, entry);
// Check the DB first.
- if (!getEntryFromDB(componentName, user, entry)) {
+ if (!getEntryFromDB(componentName, user, entry, useLowResIcon)) {
if (info != null) {
entry.icon = Utilities.createIconBitmap(info.getBadgedIcon(mIconDpi), mContext);
} else {
@@ -509,25 +553,26 @@
// pass
}
- ContentValues values = new ContentValues();
+ ContentValues values = mIconDb.newContentValues(icon, label);
values.put(IconDB.COLUMN_COMPONENT, componentName.flattenToString());
values.put(IconDB.COLUMN_USER, userSerial);
- values.put(IconDB.COLUMN_ICON, ItemInfo.flattenBitmap(icon));
- values.put(IconDB.COLUMN_LABEL, label);
mIconDb.getWritableDatabase().insertWithOnConflict(IconDB.TABLE_NAME, null, values,
SQLiteDatabase.CONFLICT_REPLACE);
}
- private boolean getEntryFromDB(ComponentName component, UserHandleCompat user, CacheEntry entry) {
+ private boolean getEntryFromDB(ComponentName component, UserHandleCompat user,
+ CacheEntry entry, boolean lowRes) {
Cursor c = mIconDb.getReadableDatabase().query(IconDB.TABLE_NAME,
- new String[] {IconDB.COLUMN_ICON, IconDB.COLUMN_LABEL},
+ new String[] {lowRes ? IconDB.COLUMN_ICON_LOW_RES : IconDB.COLUMN_ICON,
+ IconDB.COLUMN_LABEL},
IconDB.COLUMN_COMPONENT + " = ? AND " + IconDB.COLUMN_USER + " = ?",
new String[] {component.flattenToString(),
Long.toString(mUserManager.getSerialNumberForUser(user))},
null, null, null);
try {
if (c.moveToNext()) {
- entry.icon = Utilities.createIconBitmap(c, 0, mContext);
+ entry.icon = loadIconNoResize(c, 0);
+ entry.isLowResIcon = lowRes;
entry.title = c.getString(1);
if (entry.title == null) {
entry.title = "";
@@ -543,8 +588,22 @@
return false;
}
+ public static class IconLoadRequest {
+ private final Runnable mRunnable;
+ private final Handler mHandler;
+
+ IconLoadRequest(Runnable runnable, Handler handler) {
+ mRunnable = runnable;
+ mHandler = handler;
+ }
+
+ public void cancel() {
+ mHandler.removeCallbacks(mRunnable);
+ }
+ }
+
private static final class IconDB extends SQLiteOpenHelper {
- private final static int DB_VERSION = 1;
+ private final static int DB_VERSION = 2;
private final static String TABLE_NAME = "icons";
private final static String COLUMN_ROWID = "rowid";
@@ -553,6 +612,7 @@
private final static String COLUMN_LAST_UPDATED = "lastUpdated";
private final static String COLUMN_VERSION = "version";
private final static String COLUMN_ICON = "icon";
+ private final static String COLUMN_ICON_LOW_RES = "icon_low_res";
private final static String COLUMN_LABEL = "label";
public IconDB(Context context) {
@@ -567,6 +627,7 @@
COLUMN_LAST_UPDATED + " INTEGER NOT NULL DEFAULT 0, " +
COLUMN_VERSION + " INTEGER NOT NULL DEFAULT 0, " +
COLUMN_ICON + " BLOB, " +
+ COLUMN_ICON_LOW_RES + " BLOB, " +
COLUMN_LABEL + " TEXT, " +
"PRIMARY KEY (" + COLUMN_COMPONENT + ", " + COLUMN_USER + ") " +
");");
@@ -590,5 +651,25 @@
db.execSQL("DROP TABLE IF EXISTS " + TABLE_NAME);
onCreate(db);
}
+
+ public ContentValues newContentValues(Bitmap icon, String label) {
+ ContentValues values = new ContentValues();
+ values.put(IconDB.COLUMN_ICON, ItemInfo.flattenBitmap(icon));
+ values.put(IconDB.COLUMN_ICON_LOW_RES, ItemInfo.flattenBitmap(
+ Bitmap.createScaledBitmap(icon,
+ icon.getWidth() / LOW_RES_SCALE_FACTOR,
+ icon.getHeight() / LOW_RES_SCALE_FACTOR, true)));
+ values.put(IconDB.COLUMN_LABEL, label);
+ return values;
+ }
+ }
+
+ private static Bitmap loadIconNoResize(Cursor c, int iconIndex) {
+ byte[] data = c.getBlob(iconIndex);
+ try {
+ return BitmapFactory.decodeByteArray(data, 0, data.length);
+ } catch (Exception e) {
+ return null;
+ }
}
}