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Diffstat (limited to 'WallpaperPicker/src/com/android/gallery3d/common/BitmapCropTask.java')
-rw-r--r--WallpaperPicker/src/com/android/gallery3d/common/BitmapCropTask.java405
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diff --git a/WallpaperPicker/src/com/android/gallery3d/common/BitmapCropTask.java b/WallpaperPicker/src/com/android/gallery3d/common/BitmapCropTask.java
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+++ b/WallpaperPicker/src/com/android/gallery3d/common/BitmapCropTask.java
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+/**
+ * Copyright (C) 2015 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.common;
+
+import android.app.WallpaperManager;
+import android.content.Context;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.Bitmap.CompressFormat;
+import android.graphics.BitmapFactory;
+import android.graphics.BitmapRegionDecoder;
+import android.graphics.Canvas;
+import android.graphics.Matrix;
+import android.graphics.Paint;
+import android.graphics.Point;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.util.Log;
+
+import java.io.BufferedInputStream;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+
+public class BitmapCropTask extends AsyncTask<Void, Void, Boolean> {
+
+ public interface OnBitmapCroppedHandler {
+ public void onBitmapCropped(byte[] imageBytes);
+ }
+
+ private static final int DEFAULT_COMPRESS_QUALITY = 90;
+ private static final String LOGTAG = "BitmapCropTask";
+
+ Uri mInUri = null;
+ Context mContext;
+ String mInFilePath;
+ byte[] mInImageBytes;
+ int mInResId = 0;
+ RectF mCropBounds = null;
+ int mOutWidth, mOutHeight;
+ int mRotation;
+ boolean mSetWallpaper;
+ boolean mSaveCroppedBitmap;
+ Bitmap mCroppedBitmap;
+ Runnable mOnEndRunnable;
+ Resources mResources;
+ BitmapCropTask.OnBitmapCroppedHandler mOnBitmapCroppedHandler;
+ boolean mNoCrop;
+
+ public BitmapCropTask(Context c, String filePath,
+ RectF cropBounds, int rotation, int outWidth, int outHeight,
+ boolean setWallpaper, boolean saveCroppedBitmap, Runnable onEndRunnable) {
+ mContext = c;
+ mInFilePath = filePath;
+ init(cropBounds, rotation,
+ outWidth, outHeight, setWallpaper, saveCroppedBitmap, onEndRunnable);
+ }
+
+ public BitmapCropTask(byte[] imageBytes,
+ RectF cropBounds, int rotation, int outWidth, int outHeight,
+ boolean setWallpaper, boolean saveCroppedBitmap, Runnable onEndRunnable) {
+ mInImageBytes = imageBytes;
+ init(cropBounds, rotation,
+ outWidth, outHeight, setWallpaper, saveCroppedBitmap, onEndRunnable);
+ }
+
+ public BitmapCropTask(Context c, Uri inUri,
+ RectF cropBounds, int rotation, int outWidth, int outHeight,
+ boolean setWallpaper, boolean saveCroppedBitmap, Runnable onEndRunnable) {
+ mContext = c;
+ mInUri = inUri;
+ init(cropBounds, rotation,
+ outWidth, outHeight, setWallpaper, saveCroppedBitmap, onEndRunnable);
+ }
+
+ public BitmapCropTask(Context c, Resources res, int inResId,
+ RectF cropBounds, int rotation, int outWidth, int outHeight,
+ boolean setWallpaper, boolean saveCroppedBitmap, Runnable onEndRunnable) {
+ mContext = c;
+ mInResId = inResId;
+ mResources = res;
+ init(cropBounds, rotation,
+ outWidth, outHeight, setWallpaper, saveCroppedBitmap, onEndRunnable);
+ }
+
+ private void init(RectF cropBounds, int rotation, int outWidth, int outHeight,
+ boolean setWallpaper, boolean saveCroppedBitmap, Runnable onEndRunnable) {
+ mCropBounds = cropBounds;
+ mRotation = rotation;
+ mOutWidth = outWidth;
+ mOutHeight = outHeight;
+ mSetWallpaper = setWallpaper;
+ mSaveCroppedBitmap = saveCroppedBitmap;
+ mOnEndRunnable = onEndRunnable;
+ }
+
+ public void setOnBitmapCropped(BitmapCropTask.OnBitmapCroppedHandler handler) {
+ mOnBitmapCroppedHandler = handler;
+ }
+
+ public void setNoCrop(boolean value) {
+ mNoCrop = value;
+ }
+
+ public void setOnEndRunnable(Runnable onEndRunnable) {
+ mOnEndRunnable = onEndRunnable;
+ }
+
+ // Helper to setup input stream
+ private InputStream regenerateInputStream() {
+ if (mInUri == null && mInResId == 0 && mInFilePath == null && mInImageBytes == null) {
+ Log.w(LOGTAG, "cannot read original file, no input URI, resource ID, or " +
+ "image byte array given");
+ } else {
+ try {
+ if (mInUri != null) {
+ return new BufferedInputStream(
+ mContext.getContentResolver().openInputStream(mInUri));
+ } else if (mInFilePath != null) {
+ return mContext.openFileInput(mInFilePath);
+ } else if (mInImageBytes != null) {
+ return new BufferedInputStream(new ByteArrayInputStream(mInImageBytes));
+ } else {
+ return new BufferedInputStream(mResources.openRawResource(mInResId));
+ }
+ } catch (FileNotFoundException e) {
+ Log.w(LOGTAG, "cannot read file: " + mInUri.toString(), e);
+ }
+ }
+ return null;
+ }
+
+ public Point getImageBounds() {
+ InputStream is = regenerateInputStream();
+ if (is != null) {
+ BitmapFactory.Options options = new BitmapFactory.Options();
+ options.inJustDecodeBounds = true;
+ BitmapFactory.decodeStream(is, null, options);
+ Utils.closeSilently(is);
+ if (options.outWidth != 0 && options.outHeight != 0) {
+ return new Point(options.outWidth, options.outHeight);
+ }
+ }
+ return null;
+ }
+
+ public void setCropBounds(RectF cropBounds) {
+ mCropBounds = cropBounds;
+ }
+
+ public Bitmap getCroppedBitmap() {
+ return mCroppedBitmap;
+ }
+ public boolean cropBitmap() {
+ boolean failure = false;
+
+
+ WallpaperManager wallpaperManager = null;
+ if (mSetWallpaper) {
+ wallpaperManager = WallpaperManager.getInstance(mContext.getApplicationContext());
+ }
+
+
+ if (mSetWallpaper && mNoCrop) {
+ try {
+ InputStream is = regenerateInputStream();
+ if (is != null) {
+ wallpaperManager.setStream(is);
+ Utils.closeSilently(is);
+ }
+ } catch (IOException e) {
+ Log.w(LOGTAG, "cannot write stream to wallpaper", e);
+ failure = true;
+ }
+ return !failure;
+ } else {
+ // Find crop bounds (scaled to original image size)
+ Rect roundedTrueCrop = new Rect();
+ Matrix rotateMatrix = new Matrix();
+ Matrix inverseRotateMatrix = new Matrix();
+
+ Point bounds = getImageBounds();
+ if (mRotation > 0) {
+ rotateMatrix.setRotate(mRotation);
+ inverseRotateMatrix.setRotate(-mRotation);
+
+ mCropBounds.roundOut(roundedTrueCrop);
+ mCropBounds = new RectF(roundedTrueCrop);
+
+ if (bounds == null) {
+ Log.w(LOGTAG, "cannot get bounds for image");
+ failure = true;
+ return false;
+ }
+
+ float[] rotatedBounds = new float[] { bounds.x, bounds.y };
+ rotateMatrix.mapPoints(rotatedBounds);
+ rotatedBounds[0] = Math.abs(rotatedBounds[0]);
+ rotatedBounds[1] = Math.abs(rotatedBounds[1]);
+
+ mCropBounds.offset(-rotatedBounds[0]/2, -rotatedBounds[1]/2);
+ inverseRotateMatrix.mapRect(mCropBounds);
+ mCropBounds.offset(bounds.x/2, bounds.y/2);
+
+ }
+
+ mCropBounds.roundOut(roundedTrueCrop);
+
+ if (roundedTrueCrop.width() <= 0 || roundedTrueCrop.height() <= 0) {
+ Log.w(LOGTAG, "crop has bad values for full size image");
+ failure = true;
+ return false;
+ }
+
+ // See how much we're reducing the size of the image
+ int scaleDownSampleSize = Math.max(1, Math.min(roundedTrueCrop.width() / mOutWidth,
+ roundedTrueCrop.height() / mOutHeight));
+ // Attempt to open a region decoder
+ BitmapRegionDecoder decoder = null;
+ InputStream is = null;
+ try {
+ is = regenerateInputStream();
+ if (is == null) {
+ Log.w(LOGTAG, "cannot get input stream for uri=" + mInUri.toString());
+ failure = true;
+ return false;
+ }
+ decoder = BitmapRegionDecoder.newInstance(is, false);
+ Utils.closeSilently(is);
+ } catch (IOException e) {
+ Log.w(LOGTAG, "cannot open region decoder for file: " + mInUri.toString(), e);
+ } finally {
+ Utils.closeSilently(is);
+ is = null;
+ }
+
+ Bitmap crop = null;
+ if (decoder != null) {
+ // Do region decoding to get crop bitmap
+ BitmapFactory.Options options = new BitmapFactory.Options();
+ if (scaleDownSampleSize > 1) {
+ options.inSampleSize = scaleDownSampleSize;
+ }
+ crop = decoder.decodeRegion(roundedTrueCrop, options);
+ decoder.recycle();
+ }
+
+ if (crop == null) {
+ // BitmapRegionDecoder has failed, try to crop in-memory
+ is = regenerateInputStream();
+ Bitmap fullSize = null;
+ if (is != null) {
+ BitmapFactory.Options options = new BitmapFactory.Options();
+ if (scaleDownSampleSize > 1) {
+ options.inSampleSize = scaleDownSampleSize;
+ }
+ fullSize = BitmapFactory.decodeStream(is, null, options);
+ Utils.closeSilently(is);
+ }
+ if (fullSize != null) {
+ // Find out the true sample size that was used by the decoder
+ scaleDownSampleSize = bounds.x / fullSize.getWidth();
+ mCropBounds.left /= scaleDownSampleSize;
+ mCropBounds.top /= scaleDownSampleSize;
+ mCropBounds.bottom /= scaleDownSampleSize;
+ mCropBounds.right /= scaleDownSampleSize;
+ mCropBounds.roundOut(roundedTrueCrop);
+
+ // Adjust values to account for issues related to rounding
+ if (roundedTrueCrop.width() > fullSize.getWidth()) {
+ // Adjust the width
+ roundedTrueCrop.right = roundedTrueCrop.left + fullSize.getWidth();
+ }
+ if (roundedTrueCrop.right > fullSize.getWidth()) {
+ // Adjust the left value
+ int adjustment = roundedTrueCrop.left -
+ Math.max(0, roundedTrueCrop.right - roundedTrueCrop.width());
+ roundedTrueCrop.left -= adjustment;
+ roundedTrueCrop.right -= adjustment;
+ }
+ if (roundedTrueCrop.height() > fullSize.getHeight()) {
+ // Adjust the height
+ roundedTrueCrop.bottom = roundedTrueCrop.top + fullSize.getHeight();
+ }
+ if (roundedTrueCrop.bottom > fullSize.getHeight()) {
+ // Adjust the top value
+ int adjustment = roundedTrueCrop.top -
+ Math.max(0, roundedTrueCrop.bottom - roundedTrueCrop.height());
+ roundedTrueCrop.top -= adjustment;
+ roundedTrueCrop.bottom -= adjustment;
+ }
+
+ crop = Bitmap.createBitmap(fullSize, roundedTrueCrop.left,
+ roundedTrueCrop.top, roundedTrueCrop.width(),
+ roundedTrueCrop.height());
+ }
+ }
+
+ if (crop == null) {
+ Log.w(LOGTAG, "cannot decode file: " + mInUri.toString());
+ failure = true;
+ return false;
+ }
+ if (mOutWidth > 0 && mOutHeight > 0 || mRotation > 0) {
+ float[] dimsAfter = new float[] { crop.getWidth(), crop.getHeight() };
+ rotateMatrix.mapPoints(dimsAfter);
+ dimsAfter[0] = Math.abs(dimsAfter[0]);
+ dimsAfter[1] = Math.abs(dimsAfter[1]);
+
+ if (!(mOutWidth > 0 && mOutHeight > 0)) {
+ mOutWidth = Math.round(dimsAfter[0]);
+ mOutHeight = Math.round(dimsAfter[1]);
+ }
+
+ RectF cropRect = new RectF(0, 0, dimsAfter[0], dimsAfter[1]);
+ RectF returnRect = new RectF(0, 0, mOutWidth, mOutHeight);
+
+ Matrix m = new Matrix();
+ if (mRotation == 0) {
+ m.setRectToRect(cropRect, returnRect, Matrix.ScaleToFit.FILL);
+ } else {
+ Matrix m1 = new Matrix();
+ m1.setTranslate(-crop.getWidth() / 2f, -crop.getHeight() / 2f);
+ Matrix m2 = new Matrix();
+ m2.setRotate(mRotation);
+ Matrix m3 = new Matrix();
+ m3.setTranslate(dimsAfter[0] / 2f, dimsAfter[1] / 2f);
+ Matrix m4 = new Matrix();
+ m4.setRectToRect(cropRect, returnRect, Matrix.ScaleToFit.FILL);
+
+ Matrix c1 = new Matrix();
+ c1.setConcat(m2, m1);
+ Matrix c2 = new Matrix();
+ c2.setConcat(m4, m3);
+ m.setConcat(c2, c1);
+ }
+
+ Bitmap tmp = Bitmap.createBitmap((int) returnRect.width(),
+ (int) returnRect.height(), Bitmap.Config.ARGB_8888);
+ if (tmp != null) {
+ Canvas c = new Canvas(tmp);
+ Paint p = new Paint();
+ p.setFilterBitmap(true);
+ c.drawBitmap(crop, m, p);
+ crop = tmp;
+ }
+ }
+
+ if (mSaveCroppedBitmap) {
+ mCroppedBitmap = crop;
+ }
+
+ // Compress to byte array
+ ByteArrayOutputStream tmpOut = new ByteArrayOutputStream(2048);
+ if (crop.compress(CompressFormat.JPEG, DEFAULT_COMPRESS_QUALITY, tmpOut)) {
+ // If we need to set to the wallpaper, set it
+ if (mSetWallpaper && wallpaperManager != null) {
+ try {
+ byte[] outByteArray = tmpOut.toByteArray();
+ wallpaperManager.setStream(new ByteArrayInputStream(outByteArray));
+ if (mOnBitmapCroppedHandler != null) {
+ mOnBitmapCroppedHandler.onBitmapCropped(outByteArray);
+ }
+ } catch (IOException e) {
+ Log.w(LOGTAG, "cannot write stream to wallpaper", e);
+ failure = true;
+ }
+ }
+ } else {
+ Log.w(LOGTAG, "cannot compress bitmap");
+ failure = true;
+ }
+ }
+ return !failure; // True if any of the operations failed
+ }
+
+ @Override
+ protected Boolean doInBackground(Void... params) {
+ return cropBitmap();
+ }
+
+ @Override
+ protected void onPostExecute(Boolean result) {
+ if (mOnEndRunnable != null) {
+ mOnEndRunnable.run();
+ }
+ }
+} \ No newline at end of file