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/*
* Copyright (C) 2010 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.browser;
import android.app.ProgressDialog;
import android.app.WallpaperManager;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.util.Log;
import android.view.MenuItem;
import android.view.MenuItem.OnMenuItemClickListener;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
/**
* Handle setWallpaper requests
*
*/
public class WallpaperHandler extends Thread
implements OnMenuItemClickListener, DialogInterface.OnCancelListener {
private static final String LOGTAG = "WallpaperHandler";
private Context mContext;
private URL mUrl;
private ProgressDialog mWallpaperProgress;
private boolean mCanceled = false;
public WallpaperHandler(Context context, String url) {
mContext = context;
try {
mUrl = new URL(url);
} catch (MalformedURLException e) {
mUrl = null;
}
}
@Override
public void onCancel(DialogInterface dialog) {
mCanceled = true;
}
@Override
public boolean onMenuItemClick(MenuItem item) {
if (mUrl != null) {
// The user may have tried to set a image with a large file size as
// their background so it may take a few moments to perform the
// operation.
// Display a progress spinner while it is working.
mWallpaperProgress = new ProgressDialog(mContext);
mWallpaperProgress.setIndeterminate(true);
mWallpaperProgress.setMessage(mContext.getResources()
.getText(R.string.progress_dialog_setting_wallpaper));
mWallpaperProgress.setCancelable(true);
mWallpaperProgress.setOnCancelListener(this);
mWallpaperProgress.show();
start();
}
return true;
}
@Override
public void run() {
Drawable oldWallpaper =
WallpaperManager.getInstance(mContext).getDrawable();
try {
// TODO: This will cause the resource to be downloaded again, when
// we should in most cases be able to grab it from the cache. To fix
// this we should query WebCore to see if we can access a cached
// version and instead open an input stream on that. This pattern
// could also be used in the download manager where the same problem
// exists.
InputStream inputstream = mUrl.openStream();
if (inputstream != null) {
WallpaperManager.getInstance(mContext).setStream(inputstream);
}
} catch (IOException e) {
Log.e(LOGTAG, "Unable to set new wallpaper");
// Act as though the user canceled the operation so we try to
// restore the old wallpaper.
mCanceled = true;
}
if (mCanceled) {
// Restore the old wallpaper if the user cancelled whilst we were
// setting
// the new wallpaper.
int width = oldWallpaper.getIntrinsicWidth();
int height = oldWallpaper.getIntrinsicHeight();
Bitmap bm = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
Canvas canvas = new Canvas(bm);
oldWallpaper.setBounds(0, 0, width, height);
oldWallpaper.draw(canvas);
try {
WallpaperManager.getInstance(mContext).setBitmap(bm);
} catch (IOException e) {
Log.e(LOGTAG, "Unable to restore old wallpaper.");
}
mCanceled = false;
}
if (mWallpaperProgress.isShowing()) {
mWallpaperProgress.dismiss();
}
}
}
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