package com.richardradics.commons.util;
import android.annotation.TargetApi;
import android.content.ContentResolver;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.graphics.Point;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.util.Log;
import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import android.content.Context;
import android.graphics.BitmapFactory;
import com.richardradics.commons.util.io.CloseableUtils;
import com.richardradics.commons.util.io.FileUtils;
/**
* Created by Richard Radics on 2015.02.11..
*/
/**
* Utility for the {@link android.graphics.Bitmap}.
*/
@SuppressWarnings("unused") // Public APIs
public final class BitmapUtil {
public static final String TAG = BitmapUtil.class.getSimpleName();
private BitmapUtil() {
throw new AssertionError();
}
/**
* Recycle the bitmap with null checks.
* If the bitmap is already recycled, do nothing.
*
* @param bitmap to recycle.
*/
public static void recycle(Bitmap bitmap) {
if (bitmap == null || bitmap.isRecycled()) {
return;
}
bitmap.recycle();
}
/**
* Get width and height of the bitmap specified with the {@link android.net.Uri}.
*
* @param resolver the resolver.
* @param uri the uri that points to the bitmap.
* @return the size.
*/
public static Point getSize(ContentResolver resolver, Uri uri) {
InputStream is = null;
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
is = resolver.openInputStream(uri);
BitmapFactory.decodeStream(is, null, options);
int width = options.outWidth;
int height = options.outHeight;
return new Point(width, height);
} catch (FileNotFoundException e) {
Log.e(TAG, "target file (" + uri + ") does not exist.", e);
return null;
} finally {
CloseableUtils.close(is);
}
}
/**
* Get width and height of the bitmap specified with the {@link java.io.File}.
*
* @param path the bitmap file path.
* @return the size.
*/
public static Point getSize(File path) {
return getSize(path.getAbsolutePath());
}
/**
* Get width and height of the bitmap specified with the file path.
*
* @param path the bitmap file path.
* @return the size.
*/
public static Point getSize(String path) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(path, options);
int width = options.outWidth;
int height = options.outHeight;
return new Point(width, height);
}
/**
* Get width and height of the bitmap specified with the byte array.
*
* @param byteArray the bitmap itself.
* @return the size.
*/
public static Point getSize(byte[] byteArray) {
return getSize(byteArray, 0, byteArray.length);
}
/**
* Get width and height of the bitmap specified with the byte array.
*
* @param byteArray the bitmap itself.
* @param offset offset index.
* @param length array length.
* @return the size.
*/
public static Point getSize(byte[] byteArray, int offset, int length) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeByteArray(byteArray, offset, length, options);
int width = options.outWidth;
int height = options.outHeight;
return new Point(width, height);
}
/**
* Get width and height of the bitmap specified with the resource id.
*
* @param context the context.
* @param resId the resource id of the drawable.
* @return the drawable bitmap size.
*/
public static Point getSize(Context context, int resId) {
return getSize(context.getResources(), resId);
}
/**
* Get width and height of the bitmap specified with the resource id.
*
* @param res resource accessor.
* @param resId the resource id of the drawable.
* @return the drawable bitmap size.
*/
public static Point getSize(Resources res, int resId) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeResource(res, resId, options);
int width = options.outWidth;
int height = options.outHeight;
return new Point(width, height);
}
public static byte[] getBitmapAsByteArray(Bitmap bitmap) {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 0, outputStream);
return outputStream.toByteArray();
}
public static Bitmap getByteArrayAsBitmap(byte[] bytesImage){
return BitmapFactory.decodeByteArray(bytesImage, 0, bytesImage.length);
}
/**
* Compress the bitmap to the byte array as the specified format and quality.
*
* @param bitmap to compress.
* @param format the format.
* @param quality the quality of the compressed bitmap.
* @return the compressed bitmap byte array.
*/
public static byte[] toByteArray(Bitmap bitmap, Bitmap.CompressFormat format, int quality) {
ByteArrayOutputStream out = null;
try {
out = new ByteArrayOutputStream();
bitmap.compress(format, quality, out);
return out.toByteArray();
} finally {
CloseableUtils.close(out);
}
}
/**
* Shrink the bitmap to the specified scale.
*
* @param bitmap to shrink.
* @param scale the shrink scale, must be < 1.0.
* @return the shrunk bitmap.
*/
public static Bitmap shrink(Bitmap bitmap, float scale) {
if (scale >= 1.0f) {
return bitmap.copy(bitmap.getConfig(), false);
}
Matrix matrix = new Matrix();
matrix.postScale(scale, scale);
return Bitmap.createBitmap(bitmap, 0, 0, (int) (scale * bitmap.getWidth()), (int) (scale * bitmap.getHeight()), matrix, true);
}
/**
* Expand the bitmap to the specified scale.
*
* @param bitmap to expand.
* @param scale the expand scale, must be > 1.0.
* @return the expanded bitmap.
*/
public static Bitmap expand(Bitmap bitmap, float scale) {
if (scale <= 1.0f) {
return bitmap.copy(bitmap.getConfig(), false);
}
Matrix matrix = new Matrix();
matrix.postScale(scale, scale);
return Bitmap.createBitmap(bitmap, 0, 0, (int) (scale * bitmap.getWidth()), (int) (scale * bitmap.getHeight()), matrix, true);
}
/**
* Store the bitmap on the external storage path.
*
* @param context the context.
* @param bitmap to store.
* @param type type of the bitmap.
* @param path file path.
* @param filename file name.
* @param format bitmap format.
* @param quality the quality of the compressed bitmap.
* @return the compressed bitmap file.
*/
@TargetApi(Build.VERSION_CODES.FROYO)
public static File storeOnExternalStorage(Context context, Bitmap bitmap, String type, String path, String filename, Bitmap.CompressFormat format, int quality) {
if (!Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
// we cannot save a bitmap on the external storage on media not mounted.
return null;
}
File dir = new File(context.getExternalFilesDir(type), path);
FileUtils.makeDirsIfNeeded(dir);
File file = new File(dir, filename);
if (!storeAsFile(bitmap, file, format, quality)) {
return null;
}
return file;
}
/**
* Store the bitmap on the cache directory path.
*
* @param context the context.
* @param bitmap to store.
* @param path file path.
* @param filename file name.
* @param format bitmap format.
* @param quality the quality of the compressed bitmap.
* @return the compressed bitmap file.
*/
public static File storeOnCacheDir(Context context, Bitmap bitmap, String path, String filename, Bitmap.CompressFormat format, int quality) {
File dir = new File(context.getCacheDir(), path);
FileUtils.makeDirsIfNeeded(dir);
File file = new File(dir, filename);
if (!storeAsFile(bitmap, file, format, quality)) {
return null;
}
return file;
}
/**
* Store the bitmap on the application private directory path.
*
* @param context the context.
* @param bitmap to store.
* @param filename file name.
* @param format bitmap format.
* @param quality the quality of the compressed bitmap.
* @return the compressed bitmap file.
*/
public static boolean storeOnApplicationPrivateDir(Context context, Bitmap bitmap, String filename, Bitmap.CompressFormat format, int quality) {
OutputStream out = null;
try {
out = new BufferedOutputStream(context.openFileOutput(filename, Context.MODE_PRIVATE));
return bitmap.compress(format, quality, out);
} catch (FileNotFoundException e) {
Log.e(TAG, "no such file for saving bitmap: ", e);
return false;
} finally {
CloseableUtils.close(out);
}
}
/**
* Store the bitmap as a file.
*
* @param bitmap to store.
* @param format bitmap format.
* @param quality the quality of the compressed bitmap.
* @return the compressed bitmap file.
*/
public static boolean storeAsFile(Bitmap bitmap, File file, Bitmap.CompressFormat format, int quality) {
OutputStream out = null;
try {
out = new BufferedOutputStream(new FileOutputStream(file));
return bitmap.compress(format, quality, out);
} catch (FileNotFoundException e) {
Log.e(TAG, "no such file for saving bitmap: ", e);
return false;
} finally {
CloseableUtils.close(out);
}
}
public static Bitmap rotateBitmap(Bitmap source, float angle){
Matrix matrix = new Matrix();
matrix.postRotate(angle);
return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, true);
}
public static Bitmap scaleDownBitmap(Bitmap photo, int newHeight, Context context) {
final float densityMultiplier = context.getResources().getDisplayMetrics().density;
int h= (int) (newHeight*densityMultiplier);
int w= (int) (h * photo.getWidth()/((double) photo.getHeight()));
photo=Bitmap.createScaledBitmap(photo, w, h, true);
return photo;
}
public static Bitmap getBitmapFromDrawable(Context context, int resId){
return BitmapFactory.decodeResource(context.getResources(), resId);
}
}
