bufferprinter1_4.java

用java 编写的源码开放的文本编辑器。有很多有用的特性

/*
 * BufferPrinter1_4.java - Main class that controls printing
 * :tabSize=8:indentSize=8:noTabs=false:
 * :folding=explicit:collapseFolds=1:
 *
 * Copyright (C) 2001 Slava Pestov
 * Portions copyright (C) 2002 Thomas Dilts
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or 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 General Public License for more details.
 *
 * You should have received a copy of the GNU 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 org.gjt.sp.jedit.print;

//{{{ Imports
import javax.print.attribute.*;
import javax.print.attribute.standard.*;
import java.awt.print.*;
import java.awt.*;
import java.io.*;
import org.gjt.sp.jedit.*;
import org.gjt.sp.util.Log;
import org.gjt.sp.jedit.io.VFSManager;
//}}}

public class BufferPrinter1_4
{
	//{{{ getPrintJob() method
	private static PrinterJob getPrintJob(String jobName)
	{
		job = PrinterJob.getPrinterJob();

		format = new HashPrintRequestAttributeSet();

		String settings = jEdit.getSettingsDirectory();
		if(settings != null)
		{
			String printSpecPath = MiscUtilities.constructPath(
				settings, "printspec");
			File filePrintSpec = new File(printSpecPath);

			if (filePrintSpec.exists())
			{
				try
				{
					FileInputStream fileIn = new FileInputStream(filePrintSpec);
					ObjectInputStream obIn = new ObjectInputStream(fileIn);
					format = (HashPrintRequestAttributeSet)obIn.readObject();
				}
				catch(Exception e)
				{
					Log.log(Log.ERROR,BufferPrinter1_4.class,e);
				}
				//for backwards compatibility, the color variable is stored also as a property
				if(jEdit.getBooleanProperty("print.color"))
					format.add(Chromaticity.COLOR);
				else
					format.add(Chromaticity.MONOCHROME);

				//no need to always keep the same job name for every printout.
				format.add(new JobName(jobName, null));
			}
		}

		return job;
	} //}}}

	//{{{ pageSetup() method
	public static void pageSetup(View view)
	{
		PrinterJob prnJob = getPrintJob("PageSetupOnly");
		if(prnJob.pageDialog(format)!=null)
			savePrintSpec();
	} //}}}

	//{{{ print() method
	public static void print(final View view, final Buffer buffer, boolean selection)
	{
		job = getPrintJob(buffer.getPath());

		boolean header = jEdit.getBooleanProperty("print.header");
		boolean footer = jEdit.getBooleanProperty("print.footer");
		boolean lineNumbers = jEdit.getBooleanProperty("print.lineNumbers");
		boolean color = jEdit.getBooleanProperty("print.color");
		Font font = jEdit.getFontProperty("print.font");

		BufferPrintable printable = new BufferPrintable(job,format,view,
			buffer,font,header,footer,lineNumbers,color);
		job.setPrintable(printable);

		if(!job.printDialog(format))
			return;

		savePrintSpec();

		VFSManager.runInWorkThread(printable);
	} //}}}

	//{{{ getPageFormat() method
	public static PageFormat getPageFormat()
	{
		//convert from PrintRequestAttributeSet to the pageFormat
		PrinterJob prnJob=getPrintJob(" ");
		PageFormat pf=prnJob.defaultPage();
		Paper pap=pf.getPaper();

		MediaSizeName media=(MediaSizeName)format.get(
		                            Media.class);
		MediaSize ms=MediaSize.getMediaSizeForName(media);

		MediaPrintableArea mediaarea=(MediaPrintableArea)format.get(
		                                     MediaPrintableArea.class);
		if(mediaarea!=null)
			pap.setImageableArea((double)(mediaarea.getX(MediaPrintableArea.INCH)*72),
			                     (double)(mediaarea.getY(MediaPrintableArea.INCH)*72),
			                     (double)(mediaarea.getWidth(MediaPrintableArea.INCH)*72),
			                     (double)(mediaarea.getHeight(MediaPrintableArea.INCH)*72));
		if(ms!=null)
			pap.setSize((double)(ms.getX(MediaSize.INCH)*72),
			            (double)(ms.getY(MediaSize.INCH)*72));
		pf.setPaper(pap);

		OrientationRequested orientation=(OrientationRequested)format.get(
		                                         OrientationRequested.class);
		if(orientation!=null)
		{
			if(orientation.getValue()==OrientationRequested.LANDSCAPE.getValue())
			{
				pf.setOrientation(PageFormat.LANDSCAPE);
			}
			else if(orientation.getValue()==OrientationRequested.REVERSE_LANDSCAPE.getValue())
			{
				pf.setOrientation(PageFormat.REVERSE_LANDSCAPE);
			}
			else if(orientation.getValue()==OrientationRequested.PORTRAIT.getValue())
			{
				pf.setOrientation(PageFormat.PORTRAIT);
			}
			else if(orientation.getValue()==OrientationRequested.REVERSE_PORTRAIT.getValue())
			{
				//doesnt exist??
				//pf.setOrientation(PageFormat.REVERSE_PORTRAIT);
				//then just do the next best thing
				pf.setOrientation(PageFormat.PORTRAIT);
			}
		}
		return pf;
	} //}}}

	//{{{ savePrintSpec() method
	private static void savePrintSpec()
	{
		String settings = jEdit.getSettingsDirectory();
		if(settings == null)
			return;

		String printSpecPath = MiscUtilities.constructPath(
			settings, "printspec");
		File filePrintSpec = new File(printSpecPath);

		try
		{
			FileOutputStream fileOut=new FileOutputStream(filePrintSpec);
			ObjectOutputStream obOut=new ObjectOutputStream(fileOut);
			obOut.writeObject(format);
			//for backwards compatibility, the color variable is stored also as a property
			Chromaticity cc=(Chromaticity)format.get(Chromaticity.class);
			if (cc!=null)
				jEdit.setBooleanProperty("print.color",
					cc.getValue()==Chromaticity.COLOR.getValue());
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}
	//}}}

	//{{{ Private members
	private static PrintRequestAttributeSet format;
	private static PrinterJob job;
	//}}}
}