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Diffstat (limited to 'src/com/android/gallery3d/ui/TileImageViewAdapter.java')
| -rw-r--r-- | src/com/android/gallery3d/ui/TileImageViewAdapter.java | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/src/com/android/gallery3d/ui/TileImageViewAdapter.java b/src/com/android/gallery3d/ui/TileImageViewAdapter.java deleted file mode 100644 index 0c1f66d0c..000000000 --- a/src/com/android/gallery3d/ui/TileImageViewAdapter.java +++ /dev/null @@ -1,200 +0,0 @@ -/* - * Copyright (C) 2010 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.gallery3d.ui; - -import android.annotation.TargetApi; -import android.graphics.Bitmap; -import android.graphics.Bitmap.Config; -import android.graphics.BitmapFactory; -import android.graphics.BitmapRegionDecoder; -import android.graphics.Canvas; -import android.graphics.Rect; - -import com.android.gallery3d.common.ApiHelper; -import com.android.gallery3d.common.Utils; -import com.android.photos.data.GalleryBitmapPool; - -public class TileImageViewAdapter implements TileImageView.TileSource { - private static final String TAG = "TileImageViewAdapter"; - protected ScreenNail mScreenNail; - protected boolean mOwnScreenNail; - protected BitmapRegionDecoder mRegionDecoder; - protected int mImageWidth; - protected int mImageHeight; - protected int mLevelCount; - - public TileImageViewAdapter() { - } - - public synchronized void clear() { - mScreenNail = null; - mImageWidth = 0; - mImageHeight = 0; - mLevelCount = 0; - mRegionDecoder = null; - } - - // Caller is responsible to recycle the ScreenNail - public synchronized void setScreenNail( - ScreenNail screenNail, int width, int height) { - Utils.checkNotNull(screenNail); - mScreenNail = screenNail; - mImageWidth = width; - mImageHeight = height; - mRegionDecoder = null; - mLevelCount = 0; - } - - public synchronized void setRegionDecoder(BitmapRegionDecoder decoder) { - mRegionDecoder = Utils.checkNotNull(decoder); - mImageWidth = decoder.getWidth(); - mImageHeight = decoder.getHeight(); - mLevelCount = calculateLevelCount(); - } - - private int calculateLevelCount() { - return Math.max(0, Utils.ceilLog2( - (float) mImageWidth / mScreenNail.getWidth())); - } - - // Gets a sub image on a rectangle of the current photo. For example, - // getTile(1, 50, 50, 100, 3, pool) means to get the region located - // at (50, 50) with sample level 1 (ie, down sampled by 2^1) and the - // target tile size (after sampling) 100 with border 3. - // - // From this spec, we can infer the actual tile size to be - // 100 + 3x2 = 106, and the size of the region to be extracted from the - // photo to be 200 with border 6. - // - // As a result, we should decode region (50-6, 50-6, 250+6, 250+6) or - // (44, 44, 256, 256) from the original photo and down sample it to 106. - @TargetApi(ApiHelper.VERSION_CODES.HONEYCOMB) - @Override - public Bitmap getTile(int level, int x, int y, int tileSize) { - if (!ApiHelper.HAS_REUSING_BITMAP_IN_BITMAP_REGION_DECODER) { - return getTileWithoutReusingBitmap(level, x, y, tileSize); - } - - int t = tileSize << level; - - Rect wantRegion = new Rect(x, y, x + t, y + t); - - boolean needClear; - BitmapRegionDecoder regionDecoder = null; - - synchronized (this) { - regionDecoder = mRegionDecoder; - if (regionDecoder == null) return null; - - // We need to clear a reused bitmap, if wantRegion is not fully - // within the image. - needClear = !new Rect(0, 0, mImageWidth, mImageHeight) - .contains(wantRegion); - } - - Bitmap bitmap = GalleryBitmapPool.getInstance().get(tileSize, tileSize); - if (bitmap != null) { - if (needClear) bitmap.eraseColor(0); - } else { - bitmap = Bitmap.createBitmap(tileSize, tileSize, Config.ARGB_8888); - } - - BitmapFactory.Options options = new BitmapFactory.Options(); - options.inPreferredConfig = Config.ARGB_8888; - options.inPreferQualityOverSpeed = true; - options.inSampleSize = (1 << level); - options.inBitmap = bitmap; - - try { - // In CropImage, we may call the decodeRegion() concurrently. - synchronized (regionDecoder) { - bitmap = regionDecoder.decodeRegion(wantRegion, options); - } - } finally { - if (options.inBitmap != bitmap && options.inBitmap != null) { - GalleryBitmapPool.getInstance().put(options.inBitmap); - options.inBitmap = null; - } - } - - if (bitmap == null) { - Log.w(TAG, "fail in decoding region"); - } - return bitmap; - } - - private Bitmap getTileWithoutReusingBitmap( - int level, int x, int y, int tileSize) { - int t = tileSize << level; - Rect wantRegion = new Rect(x, y, x + t, y + t); - - BitmapRegionDecoder regionDecoder; - Rect overlapRegion; - - synchronized (this) { - regionDecoder = mRegionDecoder; - if (regionDecoder == null) return null; - overlapRegion = new Rect(0, 0, mImageWidth, mImageHeight); - Utils.assertTrue(overlapRegion.intersect(wantRegion)); - } - - BitmapFactory.Options options = new BitmapFactory.Options(); - options.inPreferredConfig = Config.ARGB_8888; - options.inPreferQualityOverSpeed = true; - options.inSampleSize = (1 << level); - Bitmap bitmap = null; - - // In CropImage, we may call the decodeRegion() concurrently. - synchronized (regionDecoder) { - bitmap = regionDecoder.decodeRegion(overlapRegion, options); - } - - if (bitmap == null) { - Log.w(TAG, "fail in decoding region"); - } - - if (wantRegion.equals(overlapRegion)) return bitmap; - - Bitmap result = Bitmap.createBitmap(tileSize, tileSize, Config.ARGB_8888); - Canvas canvas = new Canvas(result); - canvas.drawBitmap(bitmap, - (overlapRegion.left - wantRegion.left) >> level, - (overlapRegion.top - wantRegion.top) >> level, null); - return result; - } - - - @Override - public ScreenNail getScreenNail() { - return mScreenNail; - } - - @Override - public int getImageHeight() { - return mImageHeight; - } - - @Override - public int getImageWidth() { - return mImageWidth; - } - - @Override - public int getLevelCount() { - return mLevelCount; - } -} |