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/*
 * @(#)BasicCursorFactory.java	1.11 06/10/30
 * 
 * Copyright (c) 2006 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 * 
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 * 
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package javax.help.plaf.basic;

import java.io.*;
import javax.swing.ImageIcon;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.Image;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.util.ResourceBundle;
import java.util.MissingResourceException;
import java.util.PropertyResourceBundle;

/**
 * Factory object that can vend cursors appropriate for the basic L & F.
 * 

* * @version 1.11 10/30/06 * @author Roger D. Brinkley */ public class BasicCursorFactory { private static Cursor onItemCursor; private static Cursor dndCursor; private static BasicCursorFactory theFactory; /** * Returns the OnItem cursor. */ public static Cursor getOnItemCursor() { debug ("getOnItemCursor"); if (theFactory == null) { theFactory = new BasicCursorFactory(); } if (onItemCursor == null) { onItemCursor = theFactory.createCursor("OnItemCursor"); } return onItemCursor; } /** * Returns the DnDCursor. */ public static Cursor getDnDCursor(){ debug("getDnDCursor"); if (theFactory == null) { theFactory = new BasicCursorFactory(); } if (dndCursor == null) { dndCursor = theFactory.createCursor("DnDCursor"); } return dndCursor; } private Cursor createCursor(String name) { String gifFile = null; String hotspot = null; ImageIcon icon; Point point; debug("CreateCursor for " + name); // Get the Property file InputStream is = getClass().getResourceAsStream("images/" + name + ".properties"); if (is == null) { debug(getClass().getName() + "/" + "images/" + name + ".properties" + " not found."); return null; } try { ResourceBundle resource = new PropertyResourceBundle(is); gifFile = resource.getString("Cursor.File"); hotspot = resource.getString("Cursor.HotSpot"); } catch (MissingResourceException e) { debug(getClass().getName() + "/" + "images/" + name + ".properties" + " invalid."); return null; } catch (IOException e2) { debug(getClass().getName() + "/" + "images/" + name + ".properties" + " invalid."); return null; } // Create the icon byte[] buffer = null; try { /* Copies resource into a byte array. This is * necessary because several browsers consider * Class.getResource a security risk because it * can be used to load additional classes. * Class.getResourceAsStream returns raw * bytes, which JH can convert to an image. */ InputStream resource = getClass().getResourceAsStream(gifFile); if (resource == null) { debug(getClass().getName() + "/" + gifFile + " not found."); return null; } BufferedInputStream in = new BufferedInputStream(resource); ByteArrayOutputStream out = new ByteArrayOutputStream(1024); buffer = new byte[1024]; int n; while ((n = in.read(buffer)) > 0) { out.write(buffer, 0, n); } in.close(); out.flush(); buffer = out.toByteArray(); if (buffer.length == 0) { debug("warning: " + gifFile + " is zero-length"); return null; } } catch (IOException ioe) { debug(ioe.toString()); return null; } icon = new ImageIcon(buffer); // create the point int k = hotspot.indexOf(','); point = new Point(Integer.parseInt(hotspot.substring(0,k)), Integer.parseInt(hotspot.substring(k+1))); debug ("Toolkit fetching cursor"); try { Image image = icon.getImage(); int width = icon.getIconWidth(); int height = icon.getIconHeight(); Toolkit toolkit = Toolkit.getDefaultToolkit(); Dimension d = toolkit.getBestCursorSize(width, height); if ((d.width > width) || (d.height > height)) { try { Image bimage = new BufferedImage(d.width, d.height, BufferedImage.TYPE_INT_ARGB); bimage.getGraphics().drawImage(icon.getImage(), 0, 0, icon.getImageObserver()); image = bimage; } catch (Exception ex) { } } return toolkit.createCustomCursor(image, point, name); } catch (NoSuchMethodError err) { // return Cursor.getPredefinedCursor(Cursor.HAND_CURSOR); return null; } } /** * For printf debugging. */ private static final boolean debug = false; private static void debug(String str) { if (debug) { System.out.println("BasicCursorFactory: " + str); } } }





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