printerdata.java

源码为Eclipse开源开发平台桌面开发工具SWT的源代码,

/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.printing;


import org.eclipse.swt.graphics.*;

/**
 * Instances of this class are descriptions of a print job
 * in terms of the printer, and the scope and type of printing
 * that is desired. For example, the number of pages and copies
 * can be specified, as well as whether or not the print job
 * should go to a file.
 * <p>
 * Application code does <em>not</em> need to explicitly release the
 * resources managed by each instance when those instances are no longer
 * required, and thus no <code>dispose()</code> method is provided.
 * </p>
 *
 * @see Printer
 * @see Printer#getPrinterList
 * @see PrintDialog#open
 */

public final class PrinterData extends DeviceData {
	
	/**
	 * the printer driver
	 * On Windows systems, this is the name of the driver (often "winspool").
	 * On X/Window systems, this is the name of a display connection to the
	 * Xprt server (the default is ":1").
	 */
	public String driver;
	
	/**
	 * the name of the printer
	 * On Windows systems, this is the name of the 'device'.
	 * On X/Window systems, this is the printer's 'name'.
	 */
	public String name;
	
	/**
	 * the scope of the print job, expressed as one of the following values:
	 * <dl>
	 * <dt><code>ALL_PAGES</code></dt>
	 * <dd>Print all pages in the current document</dd>
	 * <dt><code>PAGE_RANGE</code></dt>
	 * <dd>Print the range of pages specified by startPage and endPage</dd>
	 * <dt><code>SELECTION</code></dt>
	 * <dd>Print the current selection</dd>
	 * </dl>
	 */
	public int scope = ALL_PAGES;
	
	/**
	 * the start page of a page range, used when scope is PAGE_RANGE
	 */
	public int startPage = 0;

	/**
	 * the end page of a page range, used when scope is PAGE_RANGE
	 */
	public int endPage = 0;
	
	/**
	 * whether or not the print job should go to a file
	 */
	public boolean printToFile = false;
	
	/**
	 * the name of the file to print to if printToFile is true.
	 * Note that this field is ignored if printToFile is false.
	 */
	public String fileName;
	
	/**
	 * the number of copies to print.
	 * Note that this field may be controlled by the printer driver
	 * In other words, the printer itself may be capable of printing
	 * multiple copies, and if so, the value of this field will always be 1.
	 */
	public int copyCount = 1;
	
	/**
	 * whether or not the printer should collate the printed paper
	 * Note that this field may be controlled by the printer driver.
	 * In other words, the printer itself may be capable of doing the
	 * collation, and if so, the value of this field will always be false.
	 */
	public boolean collate = false;
	
	/**
	 * <code>scope</code> field value indicating that
	 * all pages should be printed
	 */	
	public static final int ALL_PAGES = 0;
	
	/**
	 * <code>scope</code> field value indicating that
	 * the range of pages specified by startPage and endPage
	 * should be printed
	 */	
	public static final int PAGE_RANGE = 1;
	
	/**
	 * <code>scope</code> field value indicating that
	 * the current selection should be printed
	 */	
	public static final int SELECTION = 2;
	
	/**
	 * private, platform-specific data
	 * On Windows, this contains a copy of the DEVMODE struct
	 * returned from the <code>PrintDialog</code>.
	 * This field is not currently used on the X/Window System.
	 */	
	byte [] otherData;

	/**
	 * Constructs an instance of this class that can be
	 * used to print to the default printer.
	 *
	 * @exception SWTError <ul>
	 *    <li>ERROR_NO_HANDLES - if an error occurred constructing the default printer data</li>
	 * </ul>
	 */
	public PrinterData() {
	}

	/**
	 * Constructs an instance of this class with the given
	 * printer driver and printer name.
	 *
	 * @param driver the printer driver for the printer
	 * @param name the name of the printer
	 *
	 * @exception SWTError <ul>
	 *    <li>ERROR_NO_HANDLES - if there are no valid printers
	 * </ul>
	 *
	 * @see #driver
	 * @see #name
	 */
	public PrinterData(String driver, String name) {
		this.driver = driver;
		this.name = name;
	}

	/**
	 * Returns a string containing a concise, human-readable
	 * description of the receiver.
	 *
	 * @return a string representation of the receiver
	 */
	public String toString() {
		return "PrinterData {" + "driver = " + driver + ", name = " + name + "}";  //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
	}
}