1 files changed, 125 insertions, 0 deletions
diff --git a/core/java/android/print/PrintFileAdapter.java b/core/java/android/print/PrintFileAdapter.java
new file mode 100644
index 0000000..bbfc394
--- /dev/null
+++ b/core/java/android/print/PrintFileAdapter.java
@@ -0,0 +1,125 @@
+/*
+ * 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 android.print;
+
+import android.os.AsyncTask;
+import android.os.CancellationSignal;
+import android.os.CancellationSignal.OnCancelListener;
+import android.util.Log;
+
+import libcore.io.IoUtils;
+
+import java.io.File;
+import java.io.FileDescriptor;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Adapter for printing files.
+ */
+class PrintFileAdapter extends PrintAdapter {
+
+    private static final String LOG_TAG = "PrintFileAdapter";
+
+    private final File mFile;
+
+    private WriteFileAsyncTask mWriteFileAsyncTask;
+
+    public PrintFileAdapter(File file) {
+        if (file == null) {
+            throw new IllegalArgumentException("File cannot be null!");
+        }
+        mFile = file;
+    }
+
+    @Override
+    public void onPrint(List<PageRange> pages, FileDescriptor destination,
+            CancellationSignal cancellationSignal, PrintProgressCallback progressListener) {
+        mWriteFileAsyncTask = new WriteFileAsyncTask(mFile, destination, cancellationSignal,
+                progressListener);
+        mWriteFileAsyncTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR,
+                (Void[]) null);
+        
+    }
+
+    @Override
+    public PrintAdapterInfo getInfo() {
+        // TODO: When we have PDF render library we should query the page count.
+        return new PrintAdapterInfo.Builder().create();
+    }
+
+    private static final class WriteFileAsyncTask extends AsyncTask<Void, Void, Void> {
+
+        private final File mSource;
+
+        private final FileDescriptor mDestination;
+
+        private final PrintProgressCallback mProgressListener;
+
+        private final CancellationSignal mCancellationSignal;
+
+        public WriteFileAsyncTask(File source, FileDescriptor destination,
+                CancellationSignal cancellationSignal, PrintProgressCallback progressListener) {
+            mSource = source;
+            mDestination = destination;
+            mProgressListener = progressListener;
+            mCancellationSignal = cancellationSignal; 
+            mCancellationSignal.setOnCancelListener(new OnCancelListener() {
+                @Override
+                public void onCancel() {
+                    cancel(true);
+                }
+            });
+        }
+
+        @Override
+        protected Void doInBackground(Void... params) {
+            InputStream in = null;
+            OutputStream out = new FileOutputStream(mDestination);
+            final byte[] buffer = new byte[8192];
+            try {
+                in = new FileInputStream(mSource);
+                while (true) {
+                    final int readByteCount = in.read(buffer);
+                    if (readByteCount < 0) {
+                        break;
+                    }
+                    out.write(buffer, 0, readByteCount);
+                }
+             } catch (IOException ioe) {
+                Log.e(LOG_TAG, "Error writing data!", ioe);
+             } finally {
+                IoUtils.closeQuietly(in);
+                IoUtils.closeQuietly(out);
+                if (!isCancelled()) {
+                    List<PageRange> pages = new ArrayList<PageRange>();
+                    pages.add(PageRange.ALL_PAGES);
+                    mProgressListener.onPrintFinished(pages);
+                } else {
+                    mProgressListener.onPrintFailed("Cancelled");
+                }
+            }
+            return null;
+        }
+    }
+}
+