/*
* Copyright (C) 2009 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.cooliris.media;
import android.app.ProgressDialog;
import android.content.ActivityNotFoundException;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Rect;
import android.net.Uri;
import android.os.Handler;
import android.os.ParcelFileDescriptor;
import android.util.Log;
import android.webkit.MimeTypeMap;
import java.io.Closeable;
/**
* Collection of utility functions used in this package.
*/
public class Util {
private static final String TAG = "db.Util";
private static final String MAPS_PACKAGE_NAME = "com.google.android.apps.maps";
private static final String MAPS_CLASS_NAME = "com.google.android.maps.MapsActivity";
private Util() {
}
// Rotates the bitmap by the specified degree.
// If a new bitmap is created, the original bitmap is recycled.
public static Bitmap rotate(Bitmap b, int degrees) {
if (degrees != 0 && b != null) {
Matrix m = new Matrix();
m.setRotate(degrees, (float) b.getWidth() / 2, (float) b.getHeight() / 2);
try {
Bitmap b2 = Bitmap.createBitmap(b, 0, 0, b.getWidth(), b.getHeight(), m, true);
if (b != b2) {
b.recycle();
b = b2;
}
} catch (OutOfMemoryError ex) {
// We have no memory to rotate. Return the original bitmap.
}
}
return b;
}
public static Bitmap transform(Matrix scaler, Bitmap source, int targetWidth, int targetHeight, boolean scaleUp) {
int deltaX = source.getWidth() - targetWidth;
int deltaY = source.getHeight() - targetHeight;
if (!scaleUp && (deltaX < 0 || deltaY < 0)) {
/*
* In this case the bitmap is smaller, at least in one dimension,
* than the target. Transform it by placing as much of the image as
* possible into the target and leaving the top/bottom or left/right
* (or both) black.
*/
Bitmap b2 = Bitmap.createBitmap(targetWidth, targetHeight, Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(b2);
int deltaXHalf = Math.max(0, deltaX / 2);
int deltaYHalf = Math.max(0, deltaY / 2);
Rect src = new Rect(deltaXHalf, deltaYHalf, deltaXHalf + Math.min(targetWidth, source.getWidth()), deltaYHalf
+ Math.min(targetHeight, source.getHeight()));
int dstX = (targetWidth - src.width()) / 2;
int dstY = (targetHeight - src.height()) / 2;
Rect dst = new Rect(dstX, dstY, targetWidth - dstX, targetHeight - dstY);
c.drawBitmap(source, src, dst, null);
return b2;
}
float bitmapWidthF = source.getWidth();
float bitmapHeightF = source.getHeight();
float bitmapAspect = bitmapWidthF / bitmapHeightF;
float viewAspect = (float) targetWidth / targetHeight;
if (bitmapAspect > viewAspect) {
float scale = targetHeight / bitmapHeightF;
if (scale < .9F || scale > 1F) {
scaler.setScale(scale, scale);
} else {
scaler = null;
}
} else {
float scale = targetWidth / bitmapWidthF;
if (scale < .9F || scale > 1F) {
scaler.setScale(scale, scale);
} else {
scaler = null;
}
}
Bitmap b1;
if (scaler != null) {
// this is used for minithumb and crop, so we want to filter here.
b1 = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), scaler, true);
} else {
b1 = source;
}
int dx1 = Math.max(0, b1.getWidth() - targetWidth);
int dy1 = Math.max(0, b1.getHeight() - targetHeight);
Bitmap b2 = Bitmap.createBitmap(b1, dx1 / 2, dy1 / 2, targetWidth, targetHeight);
if (b1 != source) {
b1.recycle();
}
return b2;
}
/**
* Creates a centered bitmap of the desired size. Recycles the input.
*
* @param source
*/
public static Bitmap extractMiniThumb(Bitmap source, int width, int height) {
return Util.extractMiniThumb(source, width, height, true);
}
public static Bitmap extractMiniThumb(Bitmap source, int width, int height, boolean recycle) {
if (source == null) {
return null;
}
float scale;
if (source.getWidth() < source.getHeight()) {
scale = width / (float) source.getWidth();
} else {
scale = height / (float) source.getHeight();
}
Matrix matrix = new Matrix();
matrix.setScale(scale, scale);
Bitmap miniThumbnail = transform(matrix, source, width, height, false);
if (recycle && miniThumbnail != source) {
source.recycle();
}
return miniThumbnail;
}
public static <T> int indexOf(T[] array, T s) {
for (int i = 0; i < array.length; i++) {
if (array[i].equals(s)) {
return i;
}
}
return -1;
}
public static void closeSilently(Closeable c) {
if (c == null)
return;
try {
c.close();
} catch (Throwable t) {
// do nothing
}
}
public static void closeSilently(ParcelFileDescriptor c) {
if (c == null)
return;
try {
c.close();
} catch (Throwable t) {
// do nothing
}
}
public static void Assert(boolean cond) {
if (!cond) {
throw new AssertionError();
}
}
public static boolean equals(String a, String b) {
// return true if both string are null or the content equals
return a == b || a.equals(b);
}
private static class BackgroundJob extends MonitoredActivity.LifeCycleAdapter implements Runnable {
private final MonitoredActivity mActivity;
private final ProgressDialog mDialog;
private final Runnable mJob;
private final Handler mHandler;
private final Runnable mCleanupRunner = new Runnable() {
public void run() {
mActivity.removeLifeCycleListener(BackgroundJob.this);
if (mDialog.getWindow() != null)
mDialog.dismiss();
}
};
public BackgroundJob(MonitoredActivity activity, Runnable job, ProgressDialog dialog, Handler handler) {
mActivity = activity;
mDialog = dialog;
mJob = job;
mActivity.addLifeCycleListener(this);
mHandler = handler;
}
public void run() {
try {
mJob.run();
} finally {
mHandler.post(mCleanupRunner);
}
}
@Override
public void onActivityDestroyed(MonitoredActivity activity) {
// We get here only when the onDestroyed being called before
// the mCleanupRunner. So, run it now and remove it from the queue
mCleanupRunner.run();
mHandler.removeCallbacks(mCleanupRunner);
}
@Override
public void onActivityStopped(MonitoredActivity activity) {
mDialog.hide();
}
@Override
public void onActivityStarted(MonitoredActivity activity) {
mDialog.show();
}
}
public static void startBackgroundJob(MonitoredActivity activity, String title, String message, Runnable job, Handler handler) {
// Make the progress dialog uncancelable, so that we can gurantee
// the thread will be done before the activity getting destroyed.
ProgressDialog dialog = ProgressDialog.show(activity, title, message, true, false);
new Thread(new BackgroundJob(activity, job, dialog, handler)).start();
}
// Returns an intent which is used for "set as" menu items.
public static Intent createSetAsIntent(Uri uri, String mimeType) {
// Infer MIME type if missing for file URLs.
if (uri.getScheme().equals("file")) {
String path = uri.getPath();
int lastDotIndex = path.lastIndexOf('.');
if (lastDotIndex != -1) {
mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(
uri.getPath().substring(lastDotIndex + 1).toLowerCase());
}
}
Intent intent = new Intent(Intent.ACTION_ATTACH_DATA);
intent.setDataAndType(uri, mimeType);
intent.putExtra("mimeType", mimeType);
return intent;
}
// Opens Maps application for a map with given latlong. There is a bug
// which crashes the Browser when opening this kind of URL. So, we open
// it in GMM instead. For those platforms which have no GMM installed,
// the default Maps application will be chosen.
public static void openMaps(Context context, double latitude, double longitude) {
try {
// Try to open the GMM first
// We don't use "geo:latitude,longitude" because it only centers
// the MapView to the specified location, but we need a marker
// for further operations (routing to/from).
// The q=(lat, lng) syntax is suggested by geo-team.
String url = String.format("http://maps.google.com/maps?f=q&q=(%s,%s)", latitude, longitude);
ComponentName compName = new ComponentName(MAPS_PACKAGE_NAME, MAPS_CLASS_NAME);
Intent mapsIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)).setComponent(compName);
context.startActivity(mapsIntent);
} catch (ActivityNotFoundException e) {
// Use the "geo intent" if no GMM is installed
Log.e(TAG, "GMM activity not found!", e);
String url = String.format("geo:%s,%s", latitude, longitude);
Intent mapsIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
context.startActivity(mapsIntent);
}
}
}