diff options
Diffstat (limited to 'src/com/android/launcher3/WallpaperCropActivity.java')
| -rw-r--r-- | src/com/android/launcher3/WallpaperCropActivity.java | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/src/com/android/launcher3/WallpaperCropActivity.java b/src/com/android/launcher3/WallpaperCropActivity.java new file mode 100644 index 000000000..087785ef5 --- /dev/null +++ b/src/com/android/launcher3/WallpaperCropActivity.java @@ -0,0 +1,289 @@ +/* + * Copyright (C) 2013 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.launcher3; + +import android.app.Activity; +import android.app.WallpaperManager; +import android.content.Context; +import android.content.SharedPreferences; +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 com.android.gallery3d.common.Utils; + +import java.io.BufferedInputStream; +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.InputStream; + +// LAUNCHER crop activity! +public class WallpaperCropActivity extends Activity { + private static final String LOGTAG = "Launcher3.CropActivity"; + + private int mOutputX = 0; + private int mOutputY = 0; + + protected static final String WALLPAPER_WIDTH_KEY = "wallpaper.width"; + protected static final String WALLPAPER_HEIGHT_KEY = "wallpaper.height"; + private static final int DEFAULT_COMPRESS_QUALITY = 90; + /** + * The maximum bitmap size we allow to be returned through the intent. + * Intents have a maximum of 1MB in total size. However, the Bitmap seems to + * have some overhead to hit so that we go way below the limit here to make + * sure the intent stays below 1MB.We should consider just returning a byte + * array instead of a Bitmap instance to avoid overhead. + */ + public static final int MAX_BMAP_IN_INTENT = 750000; + + + protected class BitmapCropTask extends AsyncTask<Void, Void, Boolean> { + Uri mInUri = null; + InputStream mInStream; + RectF mCropBounds = null; + int mOutWidth, mOutHeight; + int mRotation = 0; // for now + protected final WallpaperManager mWPManager; + String mOutputFormat = "jpg"; // for now + boolean mSetWallpaper; + boolean mSaveCroppedBitmap; + Bitmap mCroppedBitmap; + + public BitmapCropTask(Uri inUri, RectF cropBounds, int outWidth, int outHeight, + boolean setWallpaper, boolean saveCroppedBitmap) { + mInUri = inUri; + mCropBounds = cropBounds; + mOutWidth = outWidth; + mOutHeight = outHeight; + mWPManager = WallpaperManager.getInstance(getApplicationContext()); + mSetWallpaper = setWallpaper; + mSaveCroppedBitmap = saveCroppedBitmap; + } + + // Helper to setup input stream + private void regenerateInputStream() { + if (mInUri == null) { + Log.w(LOGTAG, "cannot read original file, no input URI given"); + } else { + Utils.closeSilently(mInStream); + try { + mInStream = new BufferedInputStream( + getContentResolver().openInputStream(mInUri)); + } catch (FileNotFoundException e) { + Log.w(LOGTAG, "cannot read file: " + mInUri.toString(), e); + } + } + } + + public Point getImageBounds() { + regenerateInputStream(); + if (mInStream != null) { + BitmapFactory.Options options = new BitmapFactory.Options(); + options.inJustDecodeBounds = true; + BitmapFactory.decodeStream(mInStream, null, options); + 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; + + regenerateInputStream(); + + if (mInStream != null) { + // Find crop bounds (scaled to original image size) + Rect roundedTrueCrop = new Rect(); + 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.min(roundedTrueCrop.width() / mOutWidth, + roundedTrueCrop.height() / mOutHeight); + + // Attempt to open a region decoder + BitmapRegionDecoder decoder = null; + try { + decoder = BitmapRegionDecoder.newInstance(mInStream, true); + } catch (IOException e) { + Log.w(LOGTAG, "cannot open region decoder for file: " + mInUri.toString(), e); + } + + 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 + regenerateInputStream(); + Bitmap fullSize = null; + if (mInStream != null) { + BitmapFactory.Options options = new BitmapFactory.Options(); + if (scaleDownSampleSize > 1) { + options.inSampleSize = scaleDownSampleSize; + } + fullSize = BitmapFactory.decodeStream(mInStream, null, options); + } + if (fullSize != null) { + 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 (mOutputX > 0 && mOutputY > 0) { + Matrix m = new Matrix(); + RectF cropRect = new RectF(0, 0, crop.getWidth(), crop.getHeight()); + if (mRotation > 0) { + m.setRotate(mRotation); + m.mapRect(cropRect); + } + RectF returnRect = new RectF(0, 0, mOutputX, mOutputY); + m.setRectToRect(cropRect, returnRect, Matrix.ScaleToFit.FILL); + m.preRotate(mRotation); + Bitmap tmp = Bitmap.createBitmap((int) returnRect.width(), + (int) returnRect.height(), Bitmap.Config.ARGB_8888); + if (tmp != null) { + Canvas c = new Canvas(tmp); + c.drawBitmap(crop, m, new Paint()); + crop = tmp; + } + } else if (mRotation > 0) { + Matrix m = new Matrix(); + m.setRotate(mRotation); + Bitmap tmp = Bitmap.createBitmap(crop, 0, 0, crop.getWidth(), + crop.getHeight(), m, true); + if (tmp != null) { + crop = tmp; + } + } + + if (mSaveCroppedBitmap) { + mCroppedBitmap = crop; + } + + // Get output compression format + CompressFormat cf = + convertExtensionToCompressFormat(getFileExtension(mOutputFormat)); + + // Compress to byte array + ByteArrayOutputStream tmpOut = new ByteArrayOutputStream(2048); + if (crop.compress(cf, DEFAULT_COMPRESS_QUALITY, tmpOut)) { + // If we need to set to the wallpaper, set it + if (mSetWallpaper && mWPManager != null) { + if (mWPManager == null) { + Log.w(LOGTAG, "no wallpaper manager"); + failure = true; + } else { + try { + mWPManager.setStream(new ByteArrayInputStream(tmpOut + .toByteArray())); + updateWallpaperDimensions(mOutWidth, mOutHeight); + } 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) { + setResult(Activity.RESULT_OK); + finish(); + } + } + + protected void updateWallpaperDimensions(int width, int height) { + String spKey = LauncherAppState.getSharedPreferencesKey(); + SharedPreferences sp = getSharedPreferences(spKey, Context.MODE_PRIVATE); + SharedPreferences.Editor editor = sp.edit(); + if (width != 0 && height != 0) { + editor.putInt(WALLPAPER_WIDTH_KEY, width); + editor.putInt(WALLPAPER_HEIGHT_KEY, height); + } else { + editor.remove(WALLPAPER_WIDTH_KEY); + editor.remove(WALLPAPER_HEIGHT_KEY); + } + editor.commit(); + WallpaperPickerActivity.suggestWallpaperDimension(getResources(), + sp, getWindowManager(), WallpaperManager.getInstance(this)); + } + + protected static CompressFormat convertExtensionToCompressFormat(String extension) { + return extension.equals("png") ? CompressFormat.PNG : CompressFormat.JPEG; + } + + protected static String getFileExtension(String requestFormat) { + String outputFormat = (requestFormat == null) + ? "jpg" + : requestFormat; + outputFormat = outputFormat.toLowerCase(); + return (outputFormat.equals("png") || outputFormat.equals("gif")) + ? "png" // We don't support gif compression. + : "jpg"; + } +} |