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package org.netbeans.modules.image;
import java.awt.*;
import java.awt.image.*;
import java.awt.geom.*;
import java.awt.print.*;
import java.io.*;
import org.openide.NotifyDescriptor;
import org.openide.ErrorManager;
import org.openide.DialogDisplayer;
import org.openide.cookies.PrintCookie;
import org.openide.text.PrintPreferences;
import org.openide.util.NbBundle;
/** Printing support.
* Manipulations of the image to suit page size and orientation
* occur through the method prepareImage( PageFormat ).
* Subclass' override this method to honour image handling.
*
* @author michael wever [hair@netbeans.org]
* @author Marian Petras
* @version $Revision$
*/
public class ImagePrintSupport implements PrintCookie, Printable, ImageObserver {
/* associated dataObject */
protected ImageDataObject dataObject;
/* image to print */
protected Image image;
/* image to print */
protected RenderedImage renderedImage;
/** Creates new ImagePrintSupport */
public ImagePrintSupport( ImageDataObject ido ) {
dataObject = ido;
}
/** Prepare the image to fit on the given page, within the given margins.
* Returns null if it were unable to prepare the image for the given page.
* Throws a IllegalArgumentException if the page were too small for the image.
**/
protected static RenderedImage transformImage(RenderedImage image,
PageFormat pf)
throws IllegalArgumentException {
try{
AffineTransform af = new AffineTransform();
if( pf.getOrientation() == pf.LANDSCAPE ){
}else{
af.translate( (double)pf.getImageableX(), (double)pf.getImageableY() );
}
/** notify if too big for page **/
if( pf.getImageableWidth() - pf.getImageableX() < image.getWidth()
|| pf.getImageableHeight() - pf.getImageableY() < image.getHeight() )
throw new IllegalArgumentException("Page too small for image"); //NOI18N
/* Translate image */
AffineTransformOp afo = new AffineTransformOp( af, AffineTransformOp.TYPE_NEAREST_NEIGHBOR );
BufferedImage o = (BufferedImage)image;
BufferedImage i = new BufferedImage( o.getWidth()+(int)pf.getImageableX(), o.getHeight()+(int)pf.getImageableY(), o.getType() );
return afo.filter( (BufferedImage)image, i );
}catch(Exception ex){
ex.printStackTrace();
}
return null;
}
/** Print the content of the object. */
public void print() {
/* Try to load the image from the ImageDataObject: */
String errMsgKey;
try {
image = dataObject.getImage();
errMsgKey = (image == null) ? "MSG_CouldNotLoad" : null; //NOI18N
} catch (IOException ex) {
image = null;
errMsgKey = "MSG_ErrorWhileLoading"; //NOI18N
}
assert (image == null) != (errMsgKey == null);
/* If an error occured during loading, display a message and quit: */
if (errMsgKey != null) {
displayMessage(errMsgKey, NotifyDescriptor.WARNING_MESSAGE);
return;
}
PrinterJob job = PrinterJob.getPrinterJob();
Book book = new Book();
PageFormat pf = PrintPreferences.getPageFormat(job);
book.append( this, pf );
job.setPageable( book );
// Print
try {
if (image instanceof RenderedImage) {
// Make sure not to print in the paper's margin.
renderedImage = transformImage((RenderedImage) image, pf);
}
if (job.printDialog()) {
job.print();
}
} catch (PrinterAbortException e) { // user exception
displayMessage("CTL_Printer_Abort", //NOI18N
NotifyDescriptor.INFORMATION_MESSAGE);
} catch (Exception e) {
ErrorManager.getDefault().notify(e);
} finally {
renderedImage = null;
image = null;
}
}
/**
* Displays a localized user message.
* It is guaranteed that the displaying routine is called from
* the AWT event dispatching thread.
*
* @param msgKey bundle key of the message
* @param msgType message type - see {@link NotifyDescriptor} fields
*/
private void displayMessage(String msgKey, final int msgType) {
final String msg = NbBundle.getMessage(ImagePrintSupport.class, msgKey);
java.awt.EventQueue.invokeLater(new Runnable() { // display in the awt thread
public void run() {
DialogDisplayer.getDefault().notify(
new NotifyDescriptor.Message(msg, msgType));
}
});
}
/* Implements Printable */
public int print(Graphics graphics, PageFormat pageFormat, int page) throws PrinterException {
if( page != 0 ) return Printable.NO_SUCH_PAGE;
Graphics2D g2 = (Graphics2D)graphics;
if( renderedImage == null ){
/**
* most probably cause is image does not implement RenderedImage,
* just draw the image then.
**/
graphics.drawImage(image, (int)pageFormat.getImageableX(), (int)pageFormat.getImageableY(), this );
}else{
g2.drawRenderedImage( renderedImage, new AffineTransform() );
}
return Printable.PAGE_EXISTS;
}
public boolean imageUpdate(java.awt.Image image, int flags, int param2, int param3, int param4, int param5) {
return false;
}
}
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