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/*
* {{{ header & license
* Copyright (c) 2004, 2005 Torbj�rn Gannholm
* Copyright (c) 2006 Wisconsin Court System
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* }}}
*/
package com.greenpepper.shaded.com.openhtmltopdf.pdfboxout;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.util.Locale;
import java.util.logging.Level;
import com.greenpepper.shaded.com.openhtmltopdf.layout.SharedContext;
import com.greenpepper.shaded.com.openhtmltopdf.resource.ImageResource;
import com.greenpepper.shaded.com.openhtmltopdf.swing.FSCacheKey;
import com.greenpepper.shaded.com.openhtmltopdf.swing.NaiveUserAgent;
import com.greenpepper.shaded.com.openhtmltopdf.util.ImageUtil;
import com.greenpepper.shaded.com.openhtmltopdf.util.XRLog;
public class PdfBoxUserAgent extends NaiveUserAgent {
private SharedContext _sharedContext;
private final PdfBoxOutputDevice _outputDevice;
public PdfBoxUserAgent(PdfBoxOutputDevice outputDevice) {
super();
_outputDevice = outputDevice;
}
private byte[] readStream(InputStream is) throws IOException {
ByteArrayOutputStream out = new ByteArrayOutputStream(is.available());
byte[] buf = new byte[10240];
int i;
while ( (i = is.read(buf)) != -1) {
out.write(buf, 0, i);
}
out.close();
return out.toByteArray();
}
public ImageResource getImageResource(String uriStr) {
String uriResolved = resolveURI(uriStr);
if (uriResolved == null) {
XRLog.load(Level.INFO, "URI resolver rejected loading image at (" + uriStr + ")");
return new ImageResource(uriStr, null);
}
ImageResource resource = _imageCache.get(uriResolved);
if (resource == null) {
resource = (ImageResource) _externalCache.get(new FSCacheKey(uriResolved, PdfBoxImage.class));
}
if (resource != null && resource.getImage() instanceof PdfBoxImage) {
// Make copy of PdfBoxImage so we don't stuff up the cache.
PdfBoxImage original = (PdfBoxImage) resource.getImage();
PdfBoxImage copy = new PdfBoxImage(original.getBytes(), original.getUri(), original.getWidth(), original.getHeight(), original.isJpeg(), original.getXObject());
return new ImageResource(resource.getImageUri(), copy);
}
if (ImageUtil.isEmbeddedBase64Image(uriStr)) {
resource = loadEmbeddedBase64ImageResource(uriStr);
_outputDevice.realizeImage((PdfBoxImage) resource.getImage());
_imageCache.put(uriResolved, resource);
} else {
InputStream is = openStream(uriResolved);
if (is != null) {
try {
URI uri = new URI(uriStr);
if (uri.getPath() != null
&& uri.getPath().toLowerCase(Locale.US)
.endsWith(".pdf")) {
// TODO: Implement PDF AS IMAGE
// PdfReader reader = _outputDevice.getReader(uri);
// PDFAsImage image = new PDFAsImage(uri);
// Rectangle rect = reader.getPageSizeWithRotation(1);
// image.setInitialWidth(rect.getWidth() *
// _outputDevice.getDotsPerPoint());
// image.setInitialHeight(rect.getHeight() *
// _outputDevice.getDotsPerPoint());
// resource = new ImageResource(uriStr, image);
} else {
byte[] imgBytes = readStream(is);
PdfBoxImage fsImage = new PdfBoxImage(imgBytes, uriStr);
scaleToOutputResolution(fsImage);
_outputDevice.realizeImage(fsImage);
resource = new ImageResource(uriResolved, fsImage);
}
_imageCache.put(uriResolved, resource);
_externalCache.put(new FSCacheKey(uriResolved, PdfBoxImage.class), resource);
} catch (Exception e) {
XRLog.exception(
"Can't read image file; unexpected problem for URI '"
+ uriStr + "'", e);
} finally {
try {
is.close();
} catch (IOException e) {
// ignore
}
}
}
if (resource != null) {
resource = new ImageResource(resource.getImageUri(), resource.getImage());
} else {
resource = new ImageResource(uriStr, null);
}
}
return resource;
}
private ImageResource loadEmbeddedBase64ImageResource(final String uri) {
try {
byte[] buffer = ImageUtil.getEmbeddedBase64Image(uri);
PdfBoxImage fsImage = new PdfBoxImage(buffer, uri);
scaleToOutputResolution(fsImage);
return new ImageResource(null, fsImage);
} catch (Exception e) {
XRLog.exception("Can't read XHTML embedded image.", e);
}
return new ImageResource(null, null);
}
private void scaleToOutputResolution(PdfBoxImage image) {
float factor = _sharedContext.getDotsPerPixel();
if (factor != 1.0f) {
image.scale((int) (image.getWidth() * factor), (int) (image.getHeight() * factor));
}
}
public SharedContext getSharedContext() {
return _sharedContext;
}
public void setSharedContext(SharedContext sharedContext) {
_sharedContext = sharedContext;
}
}
