Load up-to-date thumbnail if the cached one is out of date. (1ec6f295) · Commits · e / os / android_frameworks_base

packages/DocumentsUI/src/com/android/documentsui/ThumbnailCache.java

+66 −36

Original line number	Diff line number	Diff line
		@@ -65,24 +65,19 @@ public class ThumbnailCache {
		* @return the thumbnail result
		*/
		public Result getThumbnail(Uri uri, Point size) {
		Result result = Result.obtain(Result.CACHE_MISS, null, null);

		TreeMap<Point, Pair<Uri, Point>> sizeMap;
		sizeMap = mSizeIndex.get(uri);
		if (sizeMap == null \|\| sizeMap.isEmpty()) {
		// There is not any thumbnail for this uri.
		return result;
		return Result.obtainMiss();
		}

		// Look for thumbnail of the same size.
		Pair<Uri, Point> cacheKey = sizeMap.get(size);
		if (cacheKey != null) {
		Bitmap thumbnail = mCache.get(cacheKey);
		if (thumbnail != null) {
		result.mStatus = Result.CACHE_HIT_EXACT;
		result.mThumbnail = thumbnail;
		result.mSize = size;
		return result;
		Entry entry = mCache.get(cacheKey);
		if (entry != null) {
		return Result.obtain(Result.CACHE_HIT_EXACT, size, entry);
		}
		}

		@@ -92,12 +87,9 @@ public class ThumbnailCache {
		cacheKey = sizeMap.get(otherSize);

		if (cacheKey != null) {
		Bitmap thumbnail = mCache.get(cacheKey);
		if (thumbnail != null) {
		result.mStatus = Result.CACHE_HIT_LARGER;
		result.mThumbnail = thumbnail;
		result.mSize = otherSize;
		return result;
		Entry entry = mCache.get(cacheKey);
		if (entry != null) {
		return Result.obtain(Result.CACHE_HIT_LARGER, otherSize, entry);
		}
		}
		}
		@@ -108,21 +100,18 @@ public class ThumbnailCache {
		cacheKey = sizeMap.get(otherSize);

		if (cacheKey != null) {
		Bitmap thumbnail = mCache.get(cacheKey);
		if (thumbnail != null) {
		result.mStatus = Result.CACHE_HIT_SMALLER;
		result.mThumbnail = thumbnail;
		result.mSize = otherSize;
		return result;
		Entry entry = mCache.get(cacheKey);
		if (entry != null) {
		return Result.obtain(Result.CACHE_HIT_SMALLER, otherSize, entry);
		}
		}
		}

		// Cache miss.
		return result;
		return Result.obtainMiss();
		}

		public void putThumbnail(Uri uri, Point size, Bitmap thumbnail) {
		public void putThumbnail(Uri uri, Point size, Bitmap thumbnail, long lastModified) {
		Pair<Uri, Point> cacheKey = Pair.create(uri, size);

		TreeMap<Point, Pair<Uri, Point>> sizeMap;
		@@ -134,17 +123,28 @@ public class ThumbnailCache {
		}
		}

		mCache.put(cacheKey, thumbnail);
		Entry entry = new Entry(thumbnail, lastModified);
		mCache.put(cacheKey, entry);
		synchronized (sizeMap) {
		sizeMap.put(size, cacheKey);
		}
		}

		public void onTrimMemory(int level) {
		if (level >= ComponentCallbacks2.TRIM_MEMORY_MODERATE) {
		private void removeKey(Uri uri, Point size) {
		TreeMap<Point, Pair<Uri, Point>> sizeMap;
		synchronized (mSizeIndex) {
		mSizeIndex.clear();
		sizeMap = mSizeIndex.get(uri);
		}

		// LruCache tells us to remove a key, which should exist, so sizeMap can't be null.
		assert (sizeMap != null);
		synchronized (sizeMap) {
		sizeMap.remove(size);
		}
		}

		public void onTrimMemory(int level) {
		if (level >= ComponentCallbacks2.TRIM_MEMORY_MODERATE) {
		mCache.evictAll();
		} else if (level >= ComponentCallbacks2.TRIM_MEMORY_BACKGROUND) {
		mCache.trimToSize(mCache.size() / 2);
		@@ -159,7 +159,6 @@ public class ThumbnailCache {
		@Retention(RetentionPolicy.SOURCE)
		@IntDef({CACHE_MISS, CACHE_HIT_EXACT, CACHE_HIT_SMALLER, CACHE_HIT_LARGER})
		@interface Status {}

		/**
		* Indicates there is no thumbnail for the requested uri. The thumbnail will be null.
		*/
		@@ -182,30 +181,38 @@ public class ThumbnailCache {
		private static final Pools.SimplePool<Result> sPool = new Pools.SimplePool<>(1);

		private @Status int mStatus;

		private @Nullable Bitmap mThumbnail;

		private @Nullable Point mSize;
		private long mLastModified;

		private static Result obtainMiss() {
		return obtain(CACHE_MISS, null, null, 0);
		}

		private static Result obtain(@Status int status, Point size, Entry entry) {
		return obtain(status, entry.mThumbnail, size, entry.mLastModified);
		}

		private static Result obtain(@Status int status, @Nullable Bitmap thumbnail,
		@Nullable Point size) {
		@Nullable Point size, long lastModified) {
		Result instance = sPool.acquire();
		instance = (instance != null ? instance : new Result());

		instance.mStatus = status;
		instance.mThumbnail = thumbnail;
		instance.mSize = size;
		instance.mLastModified = lastModified;

		return instance;
		}

		private Result() {
		}
		private Result() {}

		public void recycle() {
		mStatus = -1;
		mThumbnail = null;
		mSize = null;
		mLastModified = -1;

		boolean released = sPool.release(this);
		// This assert is used to guarantee we won't generate too many instances that can't be
		@@ -228,6 +235,10 @@ public class ThumbnailCache {
		return mSize;
		}

		public long getLastModified() {
		return mLastModified;
		}

		public boolean isHit() {
		return (mStatus != CACHE_MISS);
		}
		@@ -237,14 +248,33 @@ public class ThumbnailCache {
		}
		}

		private static final class Cache extends LruCache<Pair<Uri, Point>, Bitmap> {
		private static final class Entry {
		private final Bitmap mThumbnail;
		private final long mLastModified;

		private Entry(Bitmap thumbnail, long lastModified) {
		mThumbnail = thumbnail;
		mLastModified = lastModified;
		}
		}

		private final class Cache extends LruCache<Pair<Uri, Point>, Entry> {

		private Cache(int maxSizeBytes) {
		super(maxSizeBytes);
		}

		@Override
		protected int sizeOf(Pair<Uri, Point> key, Bitmap value) {
		return value.getByteCount();
		protected int sizeOf(Pair<Uri, Point> key, Entry value) {
		return value.mThumbnail.getByteCount();
		}

		@Override
		protected void entryRemoved(
		boolean evicted, Pair<Uri, Point> key, Entry oldValue, Entry newValue) {
		if (newValue == null) {
		removeKey(key.first, key.second);
		}
		}
		}

packages/DocumentsUI/src/com/android/documentsui/dirlist/GridDocumentHolder.java

+2 −1

Original line number	Diff line number	Diff line
		@@ -135,7 +135,8 @@ final class GridDocumentHolder extends DocumentHolder {
		mIconThumb.setAlpha(0f);

		final Uri uri = DocumentsContract.buildDocumentUri(docAuthority, docId);
		mIconHelper.load(uri, docMimeType, docFlags, docIcon, mIconThumb, mIconMimeLg, mIconMimeSm);
		mIconHelper.load(uri, docMimeType, docFlags, docIcon, docLastModified, mIconThumb,
		mIconMimeLg, mIconMimeSm);

		if (mHideTitles) {
		mTitle.setVisibility(View.GONE);

packages/DocumentsUI/src/com/android/documentsui/dirlist/IconHelper.java

+16 −9

Original line number	Diff line number	Diff line
		@@ -143,6 +143,7 @@ public class IconHelper {
		private final ImageView mIconMime;
		private final ImageView mIconThumb;
		private final Point mThumbSize;
		private final long mLastModified;

		// A callback to apply animation to image views after the thumbnail is loaded.
		private final BiConsumer<View, View> mImageAnimator;
		@@ -150,12 +151,13 @@ public class IconHelper {
		private final CancellationSignal mSignal;

		public LoaderTask(Uri uri, ImageView iconMime, ImageView iconThumb,
		Point thumbSize, BiConsumer<View, View> animator) {
		Point thumbSize, long lastModified, BiConsumer<View, View> animator) {
		mUri = uri;
		mIconMime = iconMime;
		mIconThumb = iconThumb;
		mThumbSize = thumbSize;
		mImageAnimator = animator;
		mLastModified = lastModified;
		mSignal = new CancellationSignal();
		if (DEBUG) Log.d(TAG, "Starting icon loader task for " + mUri);
		}
		@@ -184,7 +186,7 @@ public class IconHelper {
		result = DocumentsContract.getDocumentThumbnail(client, mUri, mThumbSize, mSignal);
		if (result != null) {
		final ThumbnailCache cache = DocumentsApplication.getThumbnailCache(context);
		cache.putThumbnail(mUri, mThumbSize, result);
		cache.putThumbnail(mUri, mThumbSize, result, mLastModified);
		}
		} catch (Exception e) {
		if (!(e instanceof OperationCanceledException)) {
		@@ -216,12 +218,13 @@ public class IconHelper {
		* @param mimeType The mime type of the file being represented.
		* @param docFlags Flags for the file being represented.
		* @param docIcon Custom icon (if any) for the file being requested.
		* @param docLastModified the last modified value of the file being requested.
		* @param iconThumb The itemview's thumbnail icon.
		* @param iconMime The itemview's mime icon. Hidden when iconThumb is shown.
		* @param subIconMime The second itemview's mime icon. Always visible.
		* @return
		*/
		public void load(Uri uri, String mimeType, int docFlags, int docIcon,
		public void load(Uri uri, String mimeType, int docFlags, int docIcon, long docLastModified,
		ImageView iconThumb, ImageView iconMime, @Nullable ImageView subIconMime) {
		boolean loadedThumbnail = false;

		@@ -232,7 +235,8 @@ public class IconHelper {
		\|\| MimePredicate.mimeMatches(MimePredicate.VISUAL_MIMES, mimeType);
		final boolean showThumbnail = supportsThumbnail && allowThumbnail && mThumbnailsEnabled;
		if (showThumbnail) {
		loadedThumbnail = loadThumbnail(uri, docAuthority, iconThumb, iconMime);
		loadedThumbnail =
		loadThumbnail(uri, docAuthority, docLastModified, iconThumb, iconMime);
		}

		final Drawable mimeIcon = getDocumentIcon(mContext, docAuthority,
		@@ -250,18 +254,21 @@ public class IconHelper {
		}
		}

		private boolean loadThumbnail(Uri uri, String docAuthority, ImageView iconThumb,
		ImageView iconMime) {
		private boolean loadThumbnail(Uri uri, String docAuthority, long docLastModified,
		ImageView iconThumb, ImageView iconMime) {
		final Result result = mThumbnailCache.getThumbnail(uri, mCurrentSize);

		final Bitmap cachedThumbnail = result.getThumbnail();
		iconThumb.setImageBitmap(cachedThumbnail);

		if (!result.isExactHit()) {
		boolean stale = (docLastModified > result.getLastModified());
		if (DEBUG) Log.d(TAG, String.format("Load thumbnail for %s, got result %d and stale %b.",
		uri.toString(), result.getStatus(), stale));
		if (!result.isExactHit() \|\| stale) {
		final BiConsumer<View, View> animator =
		(cachedThumbnail == null ? ANIM_FADE_IN : ANIM_NO_OP);
		final LoaderTask task =
		new LoaderTask(uri, iconMime, iconThumb, mCurrentSize, animator);
		final LoaderTask task = new LoaderTask(uri, iconMime, iconThumb, mCurrentSize,
		docLastModified, animator);

		iconThumb.setTag(task);

packages/DocumentsUI/src/com/android/documentsui/dirlist/ListDocumentHolder.java

+2 −1

Original line number	Diff line number	Diff line
		@@ -133,7 +133,8 @@ final class ListDocumentHolder extends DocumentHolder {
		mIconThumb.setAlpha(0f);

		final Uri uri = DocumentsContract.buildDocumentUri(docAuthority, docId);
		mIconHelper.load(uri, docMimeType, docFlags, docIcon, mIconThumb, mIconMime, null);
		mIconHelper.load(uri, docMimeType, docFlags, docIcon, docLastModified, mIconThumb,
		mIconMime, null);

		mTitle.setText(docDisplayName, TextView.BufferType.SPANNABLE);
		mTitle.setVisibility(View.VISIBLE);

packages/DocumentsUI/tests/src/com/android/documentsui/ItemDragListenerTest.java

+2 −2

Original line number	Diff line number	Diff line
		@@ -30,7 +30,7 @@ import android.view.View;
		import com.android.documentsui.testing.ClipDatas;
		import com.android.documentsui.testing.DragEvents;
		import com.android.documentsui.testing.TestTimer;
		import com.android.documentsui.testing.TestViews;
		import com.android.documentsui.testing.Views;

		import org.junit.Before;
		import org.junit.Test;
		@@ -53,7 +53,7 @@ public class ItemDragListenerTest {

		@Before
		public void setUp() {
		mTestView = TestViews.createTestView();
		mTestView = Views.createTestView();

		mTestTimer = new TestTimer();
		mTestDragHost = new TestDragHost();