/*
* Copyright (C) 2007 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.camera;
import com.android.gallery.R;
import com.android.camera.gallery.IImage;
import com.android.camera.gallery.IImageList;
import android.app.WallpaperManager;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Path;
import android.graphics.PointF;
import android.graphics.PorterDuff;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Region;
import android.media.FaceDetector;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.provider.MediaStore;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Toast;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.concurrent.CountDownLatch;
/**
* The activity can crop specific region of interest from an image.
*/
public class CropImage extends MonitoredActivity {
private static final String TAG = "CropImage";
// These are various options can be specified in the intent.
private Bitmap.CompressFormat mOutputFormat =
Bitmap.CompressFormat.JPEG; // only used with mSaveUri
private Uri mSaveUri = null;
private boolean mSetWallpaper = false;
private int mAspectX, mAspectY;
private boolean mDoFaceDetection = true;
private boolean mCircleCrop = false;
private final Handler mHandler = new Handler();
// These options specifiy the output image size and whether we should
// scale the output to fit it (or just crop it).
private int mOutputX, mOutputY;
private boolean mScale;
private boolean mScaleUp = true;
boolean mWaitingToPick; // Whether we are wait the user to pick a face.
boolean mSaving; // Whether the "save" button is already clicked.
private CropImageView mImageView;
private ContentResolver mContentResolver;
private Bitmap mBitmap;
HighlightView mCrop;
private IImageList mAllImages;
private IImage mImage;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
mContentResolver = getContentResolver();
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.cropimage);
mImageView = (CropImageView) findViewById(R.id.image);
MenuHelper.showStorageToast(this);
Intent intent = getIntent();
Bundle extras = intent.getExtras();
if (extras != null) {
if (extras.getString("circleCrop") != null) {
mCircleCrop = true;
mAspectX = 1;
mAspectY = 1;
}
mSaveUri = (Uri) extras.getParcelable(MediaStore.EXTRA_OUTPUT);
if (mSaveUri != null) {
String outputFormatString = extras.getString("outputFormat");
if (outputFormatString != null) {
mOutputFormat = Bitmap.CompressFormat.valueOf(
outputFormatString);
}
} else {
mSetWallpaper = extras.getBoolean("setWallpaper");
}
mBitmap = (Bitmap) extras.getParcelable("data");
mAspectX = extras.getInt("aspectX");
mAspectY = extras.getInt("aspectY");
mOutputX = extras.getInt("outputX");
mOutputY = extras.getInt("outputY");
mScale = extras.getBoolean("scale", true);
mScaleUp = extras.getBoolean("scaleUpIfNeeded", true);
mDoFaceDetection = extras.containsKey("noFaceDetection")
? !extras.getBoolean("noFaceDetection")
: true;
}
if (mBitmap == null) {
Uri target = intent.getData();
mAllImages = ImageManager.makeImageList(mContentResolver, target,
ImageManager.SORT_ASCENDING);
mImage = mAllImages.getImageForUri(target);
if (mImage != null) {
// Don't read in really large bitmaps. Use the (big) thumbnail
// instead.
// TODO when saving the resulting bitmap use the
// decode/crop/encode api so we don't lose any resolution.
mBitmap = mImage.thumbBitmap(IImage.ROTATE_AS_NEEDED);
}
}
if (mBitmap == null) {
finish();
return;
}
// Make UI fullscreen.
getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
findViewById(R.id.discard).setOnClickListener(
new View.OnClickListener() {
public void onClick(View v) {
setResult(RESULT_CANCELED);
finish();
}
});
findViewById(R.id.save).setOnClickListener(
new View.OnClickListener() {
public void onClick(View v) {
onSaveClicked();
}
});
startFaceDetection();
}
private void startFaceDetection() {
if (isFinishing()) {
return;
}
mImageView.setImageBitmapResetBase(mBitmap, true);
Util.startBackgroundJob(this, null,
getResources().getString(R.string.runningFaceDetection),
new Runnable() {
public void run() {
final CountDownLatch latch = new CountDownLatch(1);
final Bitmap b = (mImage != null)
? mImage.fullSizeBitmap(IImage.UNCONSTRAINED,
1024 * 1024)
: mBitmap;
mHandler.post(new Runnable() {
public void run() {
if (b != mBitmap && b != null) {
mImageView.setImageBitmapResetBase(b, true);
mBitmap.recycle();
mBitmap = b;
}
if (mImageView.getScale() == 1F) {
mImageView.center(true, true);
}
latch.countDown();
}
});
try {
latch.await();
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
mRunFaceDetection.run();
}
}, mHandler);
}
private void onSaveClicked() {
// TODO this code needs to change to use the decode/crop/encode single
// step api so that we don't require that the whole (possibly large)
// bitmap doesn't have to be read into memory
if (mCrop == null) {
return;
}
if (mSaving) return;
mSaving = true;
Bitmap croppedImage;
// If the output is required to a specific size, create an new image
// with the cropped image in the center and the extra space filled.
if (mOutputX != 0 && mOutputY != 0 && !mScale) {
// Don't scale the image but instead fill it so it's the
// required dimension
croppedImage = Bitmap.createBitmap(mOutputX, mOutputY,
Bitmap.Config.RGB_565);
Canvas canvas = new Canvas(croppedImage);
Rect srcRect = mCrop.getCropRect();
Rect dstRect = new Rect(0, 0, mOutputX, mOutputY);
int dx = (srcRect.width() - dstRect.width()) / 2;
int dy = (srcRect.height() - dstRect.height()) / 2;
// If the srcRect is too big, use the center part of it.
srcRect.inset(Math.max(0, dx), Math.max(0, dy));
// If the dstRect is too big, use the center part of it.
dstRect.inset(Math.max(0, -dx), Math.max(0, -dy));
// Draw the cropped bitmap in the center
canvas.drawBitmap(mBitmap, srcRect, dstRect, null);
// Release bitmap memory as soon as possible
mImageView.clear();
mBitmap.recycle();
} else {
Rect r = mCrop.getCropRect();
int width = r.width();
int height = r.height();
// If we are circle cropping, we want alpha channel, which is the
// third param here.
croppedImage = Bitmap.createBitmap(width, height,
mCircleCrop
? Bitmap.Config.ARGB_8888
: Bitmap.Config.RGB_565);
Canvas canvas = new Canvas(croppedImage);
Rect dstRect = new Rect(0, 0, width, height);
canvas.drawBitmap(mBitmap, r, dstRect, null);
// Release bitmap memory as soon as possible
mImageView.clear();
mBitmap.recycle();
if (mCircleCrop) {
// OK, so what's all this about?
// Bitmaps are inherently rectangular but we want to return
// something that's basically a circle. So we fill in the
// area around the circle with alpha. Note the all important
// PortDuff.Mode.CLEAR.
Canvas c = new Canvas(croppedImage);
Path p = new Path();
p.addCircle(width / 2F, height / 2F, width / 2F,
Path.Direction.CW);
c.clipPath(p, Region.Op.DIFFERENCE);
c.drawColor(0x00000000, PorterDuff.Mode.CLEAR);
}
// If the required dimension is specified, scale the image.
if (mOutputX != 0 && mOutputY != 0 && mScale) {
croppedImage = Util.transform(new Matrix(), croppedImage,
mOutputX, mOutputY, mScaleUp, Util.RECYCLE_INPUT);
}
}
mImageView.setImageBitmapResetBase(croppedImage, true);
mImageView.center(true, true);
mImageView.mHighlightViews.clear();
// Return the cropped image directly or save it to the specified URI.
Bundle myExtras = getIntent().getExtras();
if (myExtras != null && (myExtras.getParcelable("data") != null
|| myExtras.getBoolean("return-data"))) {
Bundle extras = new Bundle();
extras.putParcelable("data", croppedImage);
setResult(RESULT_OK,
(new Intent()).setAction("inline-data").putExtras(extras));
finish();
} else {
final Bitmap b = croppedImage;
final int msdId = mSetWallpaper
? R.string.wallpaper
: R.string.savingImage;
Util.startBackgroundJob(this, null,
getResources().getString(msdId),
new Runnable() {
public void run() {
saveOutput(b);
}
}, mHandler);
}
}
private void saveOutput(Bitmap croppedImage) {
if (mSaveUri != null) {
OutputStream outputStream = null;
try {
outputStream = mContentResolver.openOutputStream(mSaveUri);
if (outputStream != null) {
croppedImage.compress(mOutputFormat, 75, outputStream);
}
} catch (IOException ex) {
// TODO: report error to caller
Log.e(TAG, "Cannot open file: " + mSaveUri, ex);
} finally {
Util.closeSilently(outputStream);
}
Bundle extras = new Bundle();
setResult(RESULT_OK, new Intent(mSaveUri.toString())
.putExtras(extras));
} else if (mSetWallpaper) {
try {
WallpaperManager.getInstance(this).setBitmap(croppedImage);
setResult(RESULT_OK);
} catch (IOException e) {
Log.e(TAG, "Failed to set wallpaper.", e);
setResult(RESULT_CANCELED);
}
} else {
Bundle extras = new Bundle();
extras.putString("rect", mCrop.getCropRect().toString());
File oldPath = new File(mImage.getDataPath());
File directory = new File(oldPath.getParent());
int x = 0;
String fileName = oldPath.getName();
fileName = fileName.substring(0, fileName.lastIndexOf("."));
// Try file-1.jpg, file-2.jpg, ... until we find a filename which
// does not exist yet.
while (true) {
x += 1;
String candidate = directory.toString()
+ "/" + fileName + "-" + x + ".jpg";
boolean exists = (new File(candidate)).exists();
if (!exists) {
break;
}
}
try {
int[] degree = new int[1];
Uri newUri = ImageManager.addImage(
mContentResolver,
mImage.getTitle(),
mImage.getDateTaken(),
null, // TODO this null is going to cause us to lose
// the location (gps).
directory.toString(), fileName + "-" + x + ".jpg",
croppedImage, null,
degree);
setResult(RESULT_OK, new Intent()
.setAction(newUri.toString())
.putExtras(extras));
} catch (Exception ex) {
// basically ignore this or put up
// some ui saying we failed
Log.e(TAG, "store image fail, continue anyway", ex);
}
}
final Bitmap b = croppedImage;
mHandler.post(new Runnable() {
public void run() {
mImageView.clear();
b.recycle();
}
});
finish();
}
@Override
protected void onPause() {
super.onPause();
}
@Override
protected void onDestroy() {
if (mAllImages != null) {
mAllImages.close();
}
super.onDestroy();
}
Runnable mRunFaceDetection = new Runnable() {
@SuppressWarnings("hiding")
float mScale = 1F;
Matrix mImageMatrix;
FaceDetector.Face[] mFaces = new FaceDetector.Face[3];
int mNumFaces;
// For each face, we create a HightlightView for it.
private void handleFace(FaceDetector.Face f) {
PointF midPoint = new PointF();
int r = ((int) (f.eyesDistance() * mScale)) * 2;
f.getMidPoint(midPoint);
midPoint.x *= mScale;
midPoint.y *= mScale;
int midX = (int) midPoint.x;
int midY = (int) midPoint.y;
HighlightView hv = new HighlightView(mImageView);
int width = mBitmap.getWidth();
int height = mBitmap.getHeight();
Rect imageRect = new Rect(0, 0, width, height);
RectF faceRect = new RectF(midX, midY, midX, midY);
faceRect.inset(-r, -r);
if (faceRect.left < 0) {
faceRect.inset(-faceRect.left, -faceRect.left);
}
if (faceRect.top < 0) {
faceRect.inset(-faceRect.top, -faceRect.top);
}
if (faceRect.right > imageRect.right) {
faceRect.inset(faceRect.right - imageRect.right,
faceRect.right - imageRect.right);
}
if (faceRect.bottom > imageRect.bottom) {
faceRect.inset(faceRect.bottom - imageRect.bottom,
faceRect.bottom - imageRect.bottom);
}
hv.setup(mImageMatrix, imageRect, faceRect, mCircleCrop,
mAspectX != 0 && mAspectY != 0);
mImageView.add(hv);
}
// Create a default HightlightView if we found no face in the picture.
private void makeDefault() {
HighlightView hv = new HighlightView(mImageView);
int width = mBitmap.getWidth();
int height = mBitmap.getHeight();
Rect imageRect = new Rect(0, 0, width, height);
// make the default size about 4/5 of the width or height
int cropWidth = Math.min(width, height) * 4 / 5;
int cropHeight = cropWidth;
if (mAspectX != 0 && mAspectY != 0) {
if (mAspectX > mAspectY) {
cropHeight = cropWidth * mAspectY / mAspectX;
} else {
cropWidth = cropHeight * mAspectX / mAspectY;
}
}
int x = (width - cropWidth) / 2;
int y = (height - cropHeight) / 2;
RectF cropRect = new RectF(x, y, x + cropWidth, y + cropHeight);
hv.setup(mImageMatrix, imageRect, cropRect, mCircleCrop,
mAspectX != 0 && mAspectY != 0);
mImageView.add(hv);
}
// Scale the image down for faster face detection.
private Bitmap prepareBitmap() {
if (mBitmap == null) {
return null;
}
// 256 pixels wide is enough.
if (mBitmap.getWidth() > 256) {
mScale = 256.0F / mBitmap.getWidth();
}
Matrix matrix = new Matrix();
matrix.setScale(mScale, mScale);
Bitmap faceBitmap = Bitmap.createBitmap(mBitmap, 0, 0, mBitmap
.getWidth(), mBitmap.getHeight(), matrix, true);
return faceBitmap;
}
public void run() {
mImageMatrix = mImageView.getImageMatrix();
Bitmap faceBitmap = prepareBitmap();
mScale = 1.0F / mScale;
if (faceBitmap != null && mDoFaceDetection) {
FaceDetector detector = new FaceDetector(faceBitmap.getWidth(),
faceBitmap.getHeight(), mFaces.length);
mNumFaces = detector.findFaces(faceBitmap, mFaces);
}
if (faceBitmap != null && faceBitmap != mBitmap) {
faceBitmap.recycle();
}
mHandler.post(new Runnable() {
public void run() {
mWaitingToPick = mNumFaces > 1;
if (mNumFaces > 0) {
for (int i = 0; i < mNumFaces; i++) {
handleFace(mFaces[i]);
}
} else {
makeDefault();
}
mImageView.invalidate();
if (mImageView.mHighlightViews.size() == 1) {
mCrop = mImageView.mHighlightViews.get(0);
mCrop.setFocus(true);
}
if (mNumFaces > 1) {
Toast t = Toast.makeText(CropImage.this,
R.string.multiface_crop_help,
Toast.LENGTH_SHORT);
t.show();
}
}
});
}
};
}
class CropImageView extends ImageViewTouchBase {
ArrayList<HighlightView> mHighlightViews = new ArrayList<HighlightView>();
HighlightView mMotionHighlightView = null;
float mLastX, mLastY;
int mMotionEdge;
@Override
protected void onLayout(boolean changed, int left, int top,
int right, int bottom) {
super.onLayout(changed, left, top, right, bottom);
if (mBitmapDisplayed.getBitmap() != null) {
for (HighlightView hv : mHighlightViews) {
hv.mMatrix.set(getImageMatrix());
hv.invalidate();
if (hv.mIsFocused) {
centerBasedOnHighlightView(hv);
}
}
}
}
public CropImageView(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void zoomTo(float scale, float centerX, float centerY) {
super.zoomTo(scale, centerX, centerY);
for (HighlightView hv : mHighlightViews) {
hv.mMatrix.set(getImageMatrix());
hv.invalidate();
}
}
@Override
protected void zoomIn() {
super.zoomIn();
for (HighlightView hv : mHighlightViews) {
hv.mMatrix.set(getImageMatrix());
hv.invalidate();
}
}
@Override
protected void zoomOut() {
super.zoomOut();
for (HighlightView hv : mHighlightViews) {
hv.mMatrix.set(getImageMatrix());
hv.invalidate();
}
}
@Override
protected void postTranslate(float deltaX, float deltaY) {
super.postTranslate(deltaX, deltaY);
for (int i = 0; i < mHighlightViews.size(); i++) {
HighlightView hv = mHighlightViews.get(i);
hv.mMatrix.postTranslate(deltaX, deltaY);
hv.invalidate();
}
}
// According to the event's position, change the focus to the first
// hitting cropping rectangle.
private void recomputeFocus(MotionEvent event) {
for (int i = 0; i < mHighlightViews.size(); i++) {
HighlightView hv = mHighlightViews.get(i);
hv.setFocus(false);
hv.invalidate();
}
for (int i = 0; i < mHighlightViews.size(); i++) {
HighlightView hv = mHighlightViews.get(i);
int edge = hv.getHit(event.getX(), event.getY());
if (edge != HighlightView.GROW_NONE) {
if (!hv.hasFocus()) {
hv.setFocus(true);
hv.invalidate();
}
break;
}
}
invalidate();
}
@Override
public boolean onTouchEvent(MotionEvent event) {
CropImage cropImage = (CropImage) mContext;
if (cropImage.mSaving) {
return false;
}
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
if (cropImage.mWaitingToPick) {
recomputeFocus(event);
} else {
for (int i = 0; i < mHighlightViews.size(); i++) {
HighlightView hv = mHighlightViews.get(i);
int edge = hv.getHit(event.getX(), event.getY());
if (edge != HighlightView.GROW_NONE) {
mMotionEdge = edge;
mMotionHighlightView = hv;
mLastX = event.getX();
mLastY = event.getY();
mMotionHighlightView.setMode(
(edge == HighlightView.MOVE)
? HighlightView.ModifyMode.Move
: HighlightView.ModifyMode.Grow);
break;
}
}
}
break;
case MotionEvent.ACTION_UP:
if (cropImage.mWaitingToPick) {
for (int i = 0; i < mHighlightViews.size(); i++) {
HighlightView hv = mHighlightViews.get(i);
if (hv.hasFocus()) {
cropImage.mCrop = hv;
for (int j = 0; j < mHighlightViews.size(); j++) {
if (j == i) {
continue;
}
mHighlightViews.get(j).setHidden(true);
}
centerBasedOnHighlightView(hv);
((CropImage) mContext).mWaitingToPick = false;
return true;
}
}
} else if (mMotionHighlightView != null) {
centerBasedOnHighlightView(mMotionHighlightView);
mMotionHighlightView.setMode(
HighlightView.ModifyMode.None);
}
mMotionHighlightView = null;
break;
case MotionEvent.ACTION_MOVE:
if (cropImage.mWaitingToPick) {
recomputeFocus(event);
} else if (mMotionHighlightView != null) {
mMotionHighlightView.handleMotion(mMotionEdge,
event.getX() - mLastX,
event.getY() - mLastY);
mLastX = event.getX();
mLastY = event.getY();
if (true) {
// This section of code is optional. It has some user
// benefit in that moving the crop rectangle against
// the edge of the screen causes scrolling but it means
// that the crop rectangle is no longer fixed under
// the user's finger.
ensureVisible(mMotionHighlightView);
}
}
break;
}
switch (event.getAction()) {
case MotionEvent.ACTION_UP:
center(true, true);
break;
case MotionEvent.ACTION_MOVE:
// if we're not zoomed then there's no point in even allowing
// the user to move the image around. This call to center puts
// it back to the normalized location (with false meaning don't
// animate).
if (getScale() == 1F) {
center(true, true);
}
break;
}
return true;
}
// Pan the displayed image to make sure the cropping rectangle is visible.
private void ensureVisible(HighlightView hv) {
Rect r = hv.mDrawRect;
int panDeltaX1 = Math.max(0, mLeft - r.left);
int panDeltaX2 = Math.min(0, mRight - r.right);
int panDeltaY1 = Math.max(0, mTop - r.top);
int panDeltaY2 = Math.min(0, mBottom - r.bottom);
int panDeltaX = panDeltaX1 != 0 ? panDeltaX1 : panDeltaX2;
int panDeltaY = panDeltaY1 != 0 ? panDeltaY1 : panDeltaY2;
if (panDeltaX != 0 || panDeltaY != 0) {
panBy(panDeltaX, panDeltaY);
}
}
// If the cropping rectangle's size changed significantly, change the
// view's center and scale according to the cropping rectangle.
private void centerBasedOnHighlightView(HighlightView hv) {
Rect drawRect = hv.mDrawRect;
float width = drawRect.width();
float height = drawRect.height();
float thisWidth = getWidth();
float thisHeight = getHeight();
float z1 = thisWidth / width * .6F;
float z2 = thisHeight / height * .6F;
float zoom = Math.min(z1, z2);
zoom = zoom * this.getScale();
zoom = Math.max(1F, zoom);
if ((Math.abs(zoom - getScale()) / zoom) > .1) {
float [] coordinates = new float[] {hv.mCropRect.centerX(),
hv.mCropRect.centerY()};
getImageMatrix().mapPoints(coordinates);
zoomTo(zoom, coordinates[0], coordinates[1], 300F);
}
ensureVisible(hv);
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
for (int i = 0; i < mHighlightViews.size(); i++) {
mHighlightViews.get(i).draw(canvas);
}
}
public void add(HighlightView hv) {
mHighlightViews.add(hv);
invalidate();
}
}