| /* |
| * 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.gallery3d.filtershow.crop; |
| |
| import android.app.ActionBar; |
| import android.app.Activity; |
| import android.app.WallpaperManager; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.res.Resources; |
| import android.graphics.Bitmap; |
| import android.graphics.Bitmap.CompressFormat; |
| import android.graphics.BitmapFactory; |
| import android.graphics.Point; |
| import android.graphics.Rect; |
| import android.graphics.RectF; |
| import android.net.Uri; |
| import android.os.AsyncTask; |
| import android.os.Bundle; |
| import android.provider.MediaStore; |
| import android.util.DisplayMetrics; |
| import android.util.Log; |
| import android.util.TypedValue; |
| import android.view.Display; |
| import android.view.View; |
| import android.view.View.OnClickListener; |
| import android.view.WindowManager; |
| import android.widget.Toast; |
| |
| import com.android.gallery3d.R; |
| |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| /** |
| * Activity for cropping an image. |
| */ |
| public class CropActivity extends Activity { |
| private static final String LOGTAG = "CropActivity"; |
| private CropExtras mCropExtras = null; |
| private LoadBitmapTask mLoadBitmapTask = null; |
| private SaveBitmapTask mSaveBitmapTask = null; |
| private SetWallpaperTask mSetWallpaperTask = null; |
| private Bitmap mOriginalBitmap = null; |
| private CropView mCropView = null; |
| private int mActiveBackgroundIO = 0; |
| private Intent mResultIntent = null; |
| private static final int SELECT_PICTURE = 1; // request code for picker |
| private static final int DEFAULT_DENSITY = 133; |
| private static final int DEFAULT_COMPRESS_QUALITY = 90; |
| public static final int MAX_BMAP_IN_INTENT = 990000; |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| Intent intent = getIntent(); |
| mResultIntent = new Intent(); |
| setResult(RESULT_CANCELED, mResultIntent); |
| mCropExtras = getExtrasFromIntent(intent); |
| if (mCropExtras != null && mCropExtras.getShowWhenLocked()) { |
| getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED); |
| } |
| |
| setContentView(R.layout.crop_activity); |
| mCropView = (CropView) findViewById(R.id.cropView); |
| |
| if (intent.getData() != null) { |
| startLoadBitmap(intent.getData()); |
| } else { |
| pickImage(); |
| } |
| ActionBar actionBar = getActionBar(); |
| actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM); |
| actionBar.setCustomView(R.layout.filtershow_actionbar); |
| |
| View saveButton = actionBar.getCustomView(); |
| saveButton.setOnClickListener(new OnClickListener() { |
| @Override |
| public void onClick(View view) { |
| startFinishOutput(); |
| } |
| }); |
| } |
| |
| @Override |
| protected void onDestroy() { |
| if (mLoadBitmapTask != null) { |
| mLoadBitmapTask.cancel(false); |
| } |
| super.onDestroy(); |
| } |
| |
| /** |
| * Opens a selector in Gallery to chose an image for use when none was given |
| * in the CROP intent. |
| */ |
| public void pickImage() { |
| Intent intent = new Intent(); |
| intent.setType("image/*"); |
| intent.setAction(Intent.ACTION_GET_CONTENT); |
| startActivityForResult(Intent.createChooser(intent, getString(R.string.select_image)), |
| SELECT_PICTURE); |
| } |
| |
| /** |
| * Callback for pickImage(). |
| */ |
| @Override |
| public void onActivityResult(int requestCode, int resultCode, Intent data) { |
| if (resultCode == RESULT_OK && requestCode == SELECT_PICTURE) { |
| Uri selectedImageUri = data.getData(); |
| startLoadBitmap(selectedImageUri); |
| } |
| } |
| |
| /** |
| * Gets the crop extras from the intent, or null if none exist. |
| */ |
| public static CropExtras getExtrasFromIntent(Intent intent) { |
| Bundle extras = intent.getExtras(); |
| if (extras != null) { |
| return new CropExtras(extras.getInt(CropExtras.KEY_OUTPUT_X, 0), |
| extras.getInt(CropExtras.KEY_OUTPUT_Y, 0), |
| extras.getBoolean(CropExtras.KEY_SCALE, true) && |
| extras.getBoolean(CropExtras.KEY_SCALE_UP_IF_NEEDED, false), |
| extras.getInt(CropExtras.KEY_ASPECT_X, 0), |
| extras.getInt(CropExtras.KEY_ASPECT_Y, 0), |
| extras.getBoolean(CropExtras.KEY_SET_AS_WALLPAPER, false), |
| extras.getBoolean(CropExtras.KEY_RETURN_DATA, false), |
| (Uri) extras.getParcelable(MediaStore.EXTRA_OUTPUT), |
| extras.getString(CropExtras.KEY_OUTPUT_FORMAT), |
| extras.getBoolean(CropExtras.KEY_SHOW_WHEN_LOCKED, false), |
| extras.getFloat(CropExtras.KEY_SPOTLIGHT_X), |
| extras.getFloat(CropExtras.KEY_SPOTLIGHT_Y)); |
| } |
| return null; |
| } |
| |
| /** |
| * Gets screen size metric. |
| */ |
| private int getScreenImageSize() { |
| DisplayMetrics metrics = new DisplayMetrics(); |
| Display display = getWindowManager().getDefaultDisplay(); |
| Point size = new Point(); |
| display.getSize(size); |
| display.getMetrics(metrics); |
| int msize = Math.min(size.x, size.y); |
| // TODO: WTF |
| return (DEFAULT_DENSITY * msize) / metrics.densityDpi + 512; |
| } |
| |
| /** |
| * Method that loads a bitmap in an async task. |
| */ |
| private void startLoadBitmap(Uri uri) { |
| mActiveBackgroundIO++; |
| final View loading = findViewById(R.id.loading); |
| loading.setVisibility(View.VISIBLE); |
| mLoadBitmapTask = new LoadBitmapTask(); |
| mLoadBitmapTask.execute(uri); |
| } |
| |
| /** |
| * Method called on UI thread with loaded bitmap. |
| */ |
| private void doneLoadBitmap(Bitmap bitmap) { |
| mActiveBackgroundIO--; |
| final View loading = findViewById(R.id.loading); |
| loading.setVisibility(View.GONE); |
| mOriginalBitmap = bitmap; |
| // TODO: move these to dimens folder |
| if (bitmap != null) { |
| mCropView.setup(bitmap, (int) getPixelsFromDip(55), (int) getPixelsFromDip(25)); |
| } else { |
| Log.w(LOGTAG, "could not load image for cropping"); |
| cannotLoadImage(); |
| setResult(RESULT_CANCELED, mResultIntent); |
| done(); |
| } |
| } |
| |
| /** |
| * Display toast for image loading failure. |
| */ |
| private void cannotLoadImage() { |
| CharSequence text = getString(R.string.cannot_load_image); |
| Toast toast = Toast.makeText(this, text, Toast.LENGTH_SHORT); |
| toast.show(); |
| } |
| |
| /** |
| * AsyncTask for loading a bitmap into memory. |
| * |
| * @see #startLoadBitmap(Uri) |
| * @see #doneLoadBitmap(Bitmap) |
| */ |
| private class LoadBitmapTask extends AsyncTask<Uri, Void, Bitmap> { |
| int mBitmapSize; |
| Context mContext; |
| Rect mOriginalBounds; |
| |
| public LoadBitmapTask() { |
| mBitmapSize = getScreenImageSize(); |
| Log.v(LOGTAG, "bitmap size: " + mBitmapSize); |
| mContext = getApplicationContext(); |
| mOriginalBounds = new Rect(); |
| } |
| |
| @Override |
| protected Bitmap doInBackground(Uri... params) { |
| Bitmap bmap = CropLoader.getConstrainedBitmap(params[0], mContext, mBitmapSize, |
| mOriginalBounds); |
| return bmap; |
| } |
| |
| @Override |
| protected void onPostExecute(Bitmap result) { |
| doneLoadBitmap(result); |
| // super.onPostExecute(result); |
| } |
| } |
| |
| private void startSaveBitmap(Bitmap bmap, Uri uri, String format) { |
| if (bmap == null || uri == null) { |
| throw new IllegalArgumentException("bad argument to startSaveBitmap"); |
| } |
| mActiveBackgroundIO++; |
| final View loading = findViewById(R.id.loading); |
| loading.setVisibility(View.VISIBLE); |
| mSaveBitmapTask = new SaveBitmapTask(uri, format); |
| mSaveBitmapTask.execute(bmap); |
| } |
| |
| private void doneSaveBitmap(Uri uri) { |
| mActiveBackgroundIO--; |
| final View loading = findViewById(R.id.loading); |
| loading.setVisibility(View.GONE); |
| if (uri == null) { |
| Log.w(LOGTAG, "failed to save bitmap"); |
| setResult(RESULT_CANCELED, mResultIntent); |
| done(); |
| return; |
| } |
| done(); |
| } |
| |
| private class SaveBitmapTask extends AsyncTask<Bitmap, Void, Boolean> { |
| |
| OutputStream mOutStream = null; |
| String mOutputFormat = null; |
| Uri mOutUri = null; |
| |
| public SaveBitmapTask(Uri uri, String outputFormat) { |
| mOutputFormat = outputFormat; |
| mOutStream = null; |
| mOutUri = uri; |
| try { |
| mOutStream = getContentResolver().openOutputStream(uri); |
| } catch (FileNotFoundException e) { |
| Log.w(LOGTAG, "cannot write output: " + mOutUri.toString(), e); |
| } |
| } |
| |
| @Override |
| protected Boolean doInBackground(Bitmap... params) { |
| if (mOutStream == null) { |
| return false; |
| } |
| CompressFormat cf = convertExtensionToCompressFormat(getFileExtension(mOutputFormat)); |
| return params[0].compress(cf, DEFAULT_COMPRESS_QUALITY, mOutStream); |
| } |
| |
| @Override |
| protected void onPostExecute(Boolean result) { |
| if (result.booleanValue() == false) { |
| Log.w(LOGTAG, "could not compress to output: " + mOutUri.toString()); |
| doneSaveBitmap(null); |
| } |
| doneSaveBitmap(mOutUri); |
| } |
| } |
| |
| private void startSetWallpaper(Bitmap bmap) { |
| if (bmap == null) { |
| throw new IllegalArgumentException("bad argument to startSetWallpaper"); |
| } |
| mActiveBackgroundIO++; |
| Toast.makeText(this, R.string.setting_wallpaper, Toast.LENGTH_LONG).show(); |
| mSetWallpaperTask = new SetWallpaperTask(); |
| mSetWallpaperTask.execute(bmap); |
| |
| } |
| |
| private void doneSetWallpaper() { |
| mActiveBackgroundIO--; |
| done(); |
| } |
| |
| private class SetWallpaperTask extends AsyncTask<Bitmap, Void, Boolean> { |
| private final WallpaperManager mWPManager; |
| |
| public SetWallpaperTask() { |
| mWPManager = WallpaperManager.getInstance(getApplicationContext()); |
| } |
| |
| @Override |
| protected Boolean doInBackground(Bitmap... params) { |
| try { |
| mWPManager.setBitmap(params[0]); |
| } catch (IOException e) { |
| Log.w(LOGTAG, "fail to set wall paper", e); |
| } |
| return true; |
| } |
| |
| @Override |
| protected void onPostExecute(Boolean result) { |
| doneSetWallpaper(); |
| } |
| } |
| |
| private void startFinishOutput() { |
| if (mOriginalBitmap != null && mCropExtras != null) { |
| Bitmap cropped = null; |
| if (mCropExtras.getExtraOutput() != null) { |
| if (cropped == null) { |
| cropped = getCroppedImage(mOriginalBitmap); |
| } |
| startSaveBitmap(cropped, mCropExtras.getExtraOutput(), |
| mCropExtras.getOutputFormat()); |
| } |
| if (mCropExtras.getSetAsWallpaper()) { |
| if (cropped == null) { |
| cropped = getCroppedImage(mOriginalBitmap); |
| } |
| startSetWallpaper(cropped); |
| } |
| if (mCropExtras.getReturnData()) { |
| if (cropped == null) { |
| cropped = getCroppedImage(mOriginalBitmap); |
| } |
| int bmapSize = cropped.getRowBytes() * cropped.getHeight(); |
| if (bmapSize > MAX_BMAP_IN_INTENT) { |
| Log.w(LOGTAG, "Bitmap too large to be returned via intent"); |
| } else { |
| mResultIntent.putExtra(CropExtras.KEY_DATA, cropped); |
| } |
| } |
| setResult(RESULT_OK, mResultIntent); |
| } else { |
| setResult(RESULT_CANCELED, mResultIntent); |
| } |
| done(); |
| } |
| |
| private void done() { |
| if (mActiveBackgroundIO == 0) { |
| finish(); |
| } |
| } |
| |
| private Bitmap getCroppedImage(Bitmap image) { |
| RectF imageBounds = new RectF(0, 0, image.getWidth(), image.getHeight()); |
| RectF crop = getBitmapCrop(imageBounds); |
| if (crop == null) { |
| return image; |
| } |
| Rect intCrop = new Rect(); |
| crop.roundOut(intCrop); |
| return Bitmap.createBitmap(image, intCrop.left, intCrop.top, intCrop.width(), |
| intCrop.height()); |
| } |
| |
| private RectF getBitmapCrop(RectF imageBounds) { |
| RectF crop = new RectF(); |
| if (!mCropView.getCropBounds(crop, imageBounds)) { |
| Log.w(LOGTAG, "could not get crop"); |
| return null; |
| } |
| return crop; |
| } |
| |
| /** |
| * Helper method for unit conversions. |
| */ |
| public float getPixelsFromDip(float value) { |
| Resources r = getResources(); |
| return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, value, |
| r.getDisplayMetrics()); |
| } |
| |
| private static CompressFormat convertExtensionToCompressFormat(String extension) { |
| return extension.equals("png") ? CompressFormat.PNG : CompressFormat.JPEG; |
| } |
| |
| private 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"; |
| } |
| |
| } |