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/*
* 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.gallery3d.util;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.graphics.RectF;
import android.net.Uri;
import android.os.Bundle;
import android.os.CancellationSignal;
import android.os.ParcelFileDescriptor;
import android.print.PageRange;
import android.print.PrintAttributes;
import android.print.PrintDocumentAdapter;
import android.print.PrintDocumentInfo;
import android.print.PrintManager;
import android.print.pdf.PdfDocument.Page;
import android.print.pdf.PrintedPdfDocument;
import com.android.gallery3d.filtershow.cache.ImageLoader;
import java.io.FileOutputStream;
import java.io.IOException;
public class PrintJob {
// will be <= 300 dpi on A4 (8.3×11.7) paper
// with a worst case of 150 dpi
private final static int MAX_PRINT_SIZE = 3500;
public static void printBitmap(final Context context, final String jobName,
final Bitmap bitmap) {
if (bitmap == null) {
return;
}
PrintManager printManager = (PrintManager) context.getSystemService(Context.PRINT_SERVICE);
printManager.print(jobName,
new PrintDocumentAdapter() {
private PrintAttributes mAttributes;
@Override
public void onLayout(PrintAttributes oldPrintAttributes,
PrintAttributes newPrintAttributes,
CancellationSignal cancellationSignal,
LayoutResultCallback layoutResultCallback,
Bundle bundle) {
mAttributes = newPrintAttributes;
PrintDocumentInfo info = new PrintDocumentInfo.Builder(jobName)
.setContentType(PrintDocumentInfo.CONTENT_TYPE_PHOTO)
.setPageCount(1)
.build();
layoutResultCallback.onLayoutFinished(info, false);
}
@Override
public void onWrite(PageRange[] pageRanges, ParcelFileDescriptor fileDescriptor,
CancellationSignal cancellationSignal,
WriteResultCallback writeResultCallback) {
try {
PrintedPdfDocument pdfDocument = PrintedPdfDocument.open(context,
mAttributes);
Page page = pdfDocument.startPage(1);
RectF content = new RectF(page.getInfo().getContentSize());
Matrix matrix = new Matrix();
// Compute and apply scale to fill the page.
float scale = Math.max(content.width() / bitmap.getWidth(),
content.height() / bitmap.getHeight());
matrix.postScale(scale, scale);
// Center the content.
final float translateX = (content.width()
- bitmap.getWidth() * scale) / 2;
final float translateY = (content.height()
- bitmap.getHeight() * scale) / 2;
matrix.postTranslate(translateX, translateY);
// Draw the bitmap.
page.getCanvas().drawBitmap(bitmap, matrix, null);
// Write the document.
pdfDocument.finishPage(page);
pdfDocument.writeTo(new FileOutputStream(
fileDescriptor.getFileDescriptor()));
pdfDocument.close();
// Done.
writeResultCallback.onWriteFinished(
new PageRange[] { PageRange.ALL_PAGES });
} finally {
if (fileDescriptor != null) {
try {
fileDescriptor.close();
} catch (IOException ioe) {
/* ignore */
}
}
}
}
}, null);
}
public static void printBitmapAtUri(Context context, String imagePrint, Uri uri) {
// TODO: load full size images. For now, it's better to constrain ourselves.
Bitmap bitmap = ImageLoader.loadConstrainedBitmap(uri, context, MAX_PRINT_SIZE, null, false);
printBitmap(context, imagePrint, bitmap);
}
}
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