| /* |
| * Copyright (C) 2013 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.printspooler; |
| |
| import android.os.AsyncTask; |
| import android.os.Bundle; |
| import android.os.ParcelFileDescriptor; |
| import android.os.RemoteException; |
| import android.print.ILayoutResultCallback; |
| import android.print.IPrintDocumentAdapter; |
| import android.print.IWriteResultCallback; |
| import android.print.PageRange; |
| import android.print.PrintAttributes; |
| import android.util.Log; |
| |
| import libcore.io.IoUtils; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| /** |
| * This class represents a remote print document adapter instance. |
| */ |
| final class RemotePrintDocumentAdapter { |
| private static final String LOG_TAG = "RemotePrintDocumentAdapter"; |
| |
| private static final boolean DEBUG = false; |
| |
| private final IPrintDocumentAdapter mRemoteInterface; |
| |
| private final File mFile; |
| |
| public RemotePrintDocumentAdapter(IPrintDocumentAdapter printAdatper, File file) { |
| mRemoteInterface = printAdatper; |
| mFile = file; |
| } |
| |
| public void start() { |
| if (DEBUG) { |
| Log.i(LOG_TAG, "start()"); |
| } |
| try { |
| mRemoteInterface.start(); |
| } catch (RemoteException re) { |
| Log.e(LOG_TAG, "Error calling start()", re); |
| } |
| } |
| |
| public void layout(PrintAttributes oldAttributes, PrintAttributes newAttributes, |
| ILayoutResultCallback callback, Bundle metadata, int sequence) { |
| if (DEBUG) { |
| Log.i(LOG_TAG, "layout()"); |
| } |
| try { |
| mRemoteInterface.layout(oldAttributes, newAttributes, callback, metadata, sequence); |
| } catch (RemoteException re) { |
| Log.e(LOG_TAG, "Error calling layout()", re); |
| } |
| } |
| |
| public void write(final PageRange[] pages, final IWriteResultCallback callback, |
| final int sequence) { |
| if (DEBUG) { |
| Log.i(LOG_TAG, "write()"); |
| } |
| new AsyncTask<Void, Void, Void>() { |
| @Override |
| protected Void doInBackground(Void... params) { |
| InputStream in = null; |
| OutputStream out = null; |
| ParcelFileDescriptor source = null; |
| ParcelFileDescriptor sink = null; |
| try { |
| ParcelFileDescriptor[] pipe = ParcelFileDescriptor.createPipe(); |
| source = pipe[0]; |
| sink = pipe[1]; |
| |
| in = new FileInputStream(source.getFileDescriptor()); |
| out = new FileOutputStream(mFile); |
| |
| // Async call to initiate the other process writing the data. |
| mRemoteInterface.write(pages, sink, callback, sequence); |
| |
| // Close the source. It is now held by the client. |
| sink.close(); |
| sink = null; |
| |
| // Read the data. |
| final byte[] buffer = new byte[8192]; |
| while (true) { |
| final int readByteCount = in.read(buffer); |
| if (readByteCount < 0) { |
| break; |
| } |
| out.write(buffer, 0, readByteCount); |
| } |
| } catch (RemoteException re) { |
| Log.e(LOG_TAG, "Error calling write()", re); |
| } catch (IOException ioe) { |
| Log.e(LOG_TAG, "Error calling write()", ioe); |
| } finally { |
| IoUtils.closeQuietly(in); |
| IoUtils.closeQuietly(out); |
| IoUtils.closeQuietly(sink); |
| IoUtils.closeQuietly(source); |
| } |
| return null; |
| } |
| }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void[]) null); |
| } |
| |
| public void finish() { |
| if (DEBUG) { |
| Log.i(LOG_TAG, "finish()"); |
| } |
| try { |
| mRemoteInterface.finish(); |
| } catch (RemoteException re) { |
| Log.e(LOG_TAG, "Error calling finish()", re); |
| } |
| } |
| |
| public void cancel() { |
| if (DEBUG) { |
| Log.i(LOG_TAG, "cancel()"); |
| } |
| try { |
| mRemoteInterface.cancel(); |
| } catch (RemoteException re) { |
| Log.e(LOG_TAG, "Error calling cancel()", re); |
| } |
| } |
| } |