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Diffstat (limited to 'src/com/android/browser/WallpaperHandler.java')
-rw-r--r-- | src/com/android/browser/WallpaperHandler.java | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/com/android/browser/WallpaperHandler.java b/src/com/android/browser/WallpaperHandler.java new file mode 100644 index 0000000..0c88a50 --- /dev/null +++ b/src/com/android/browser/WallpaperHandler.java @@ -0,0 +1,127 @@ +/* + * 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(); + } + } +} |