Newsgroup: it.comp.java
Titolo: Tooltip

E' possibile mettere più di una riga di testo in un tooltip????
Grazie

E' possibile mettere più di una riga di testo in un tooltip????
Certo che si può... trovi un demo nel JDK! :)
..\jdk1.3\demo\jfc\SwingSet2\SwingSet2Plugin.html
/*
 * @(#)ToolTipDemo.java	1.2 99/07/22
 *
 * Copyright (c) 1997-1999 by Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
 * modify and redistribute this software in source and binary code form,
 * provided that i) this copyright notice and license appear on all copies of
 * the software; and ii) Licensee does not utilize the software in a manner
 * which is disparaging to Sun.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
 * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
 * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
 * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
 * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
 * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 * 
 * This software is not designed or intended for use in on-line control of
 * aircraft, air traffic, aircraft navigation or aircraft communications; or in
 * the design, construction, operation or maintenance of any nuclear
 * facility. Licensee represents and warrants that it will not use or
 * redistribute the Software for such purposes.
 */
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.border.*;
import javax.swing.colorchooser.*;
import javax.swing.filechooser.*;
import javax.accessibility.*;
import java.awt.*;
import java.awt.event.*;
import java.beans.*;
import java.util.*;
import java.io.*;
import java.applet.*;
import java.net.*;
/**
 * ToolTip Demo
 *
 * @version 1.2 07/22/99
 * @author Jeff Dinkins
 */
public class ToolTipDemo extends DemoModule {
    /**
     * main method allows us to run as a standalone demo.
     */
    public static void main(String[] args) {
	ToolTipDemo demo = new ToolTipDemo(null);
	demo.mainImpl();
    }
    /**
     * ToolTipDemo Constructor
     */
    public ToolTipDemo(SwingSet2 swingset) {
	// Set the title for this demo, and an icon used to represent this
	// demo inside the SwingSet2 app.
	super(swingset, "ToolTipDemo", "toolbar/ToolTip.gif");
	// Set the layout manager.
	JPanel p = getDemoPanel();
	p.setLayout(new BoxLayout(p, BoxLayout.Y_AXIS));
	p.setBackground(Color.white);
	// Create a Cow to put in the center of the panel.
	Cow cow = new Cow();
	cow.getAccessibleContext().setAccessibleName(getString("ToolTipDemo.accessible_cow"));
	// Set the tooltip text. Note, for fun, we also set more tooltip text
	// descriptions for the cow down below in the Cow.contains() method.
	cow.setToolTipText(getString("ToolTipDemo.cow"));
	// Add the cow midway down the panel
	p.add(Box.createRigidArea(new Dimension(1, 150)));
	p.add(cow);
    }
    class Cow extends JLabel {
	Polygon cowgon = new Polygon();
 
	public Cow() {
	    super(createImageIcon("tooltip/cow.gif", getString("ToolTipDemo.bessie")));
	    setAlignmentX(CENTER_ALIGNMENT);
	    // Set polygon points that define the outline of the cow.
	    cowgon.addPoint(3,20);    cowgon.addPoint(44,4);
	    cowgon.addPoint(79,15);   cowgon.addPoint(130,11);
	    cowgon.addPoint(252,5);   cowgon.addPoint(181,17);
	    cowgon.addPoint(301,45);  cowgon.addPoint(292,214);
	    cowgon.addPoint(269,209); cowgon.addPoint(266,142);
	    cowgon.addPoint(250,161); cowgon.addPoint(235,218);
	    cowgon.addPoint(203,206); cowgon.addPoint(215,137);
	    cowgon.addPoint(195,142); cowgon.addPoint(143,132);
	    cowgon.addPoint(133,189); cowgon.addPoint(160,200);
	    cowgon.addPoint(97,196);  cowgon.addPoint(107,182);
	    cowgon.addPoint(118,185); cowgon.addPoint(110,144);
	    cowgon.addPoint(59,77);   cowgon.addPoint(30,82);
	    cowgon.addPoint(30,35);   cowgon.addPoint(15,36);
	}
 
	boolean moo = false;
	boolean milk = false;
	boolean tail = false;
	// Use the contains method to set the tooltip text depending
	// on where the mouse is over the cow.
	public boolean contains(int x, int y) {
	    if(!cowgon.contains(new Point(x, y))) {
		return false;
	    }
 
	    if((x > 30) && (x < 60) && (y > 60) && (y < 85)) {
		if(!moo) {
		    setToolTipText("<html><center><font color=blue size=+2>" +
				   getString("ToolTipDemo.moo") + "</font></center></html>");
		    moo = true;
		    milk = false;
		    tail = false;
		}
	    } else if((x > 150) && (x < 260) && (y > 90) && (y < 145)) {
		if(!milk) {
		    setToolTipText("<html><center><font face=AvantGarde size=+1 color=white>" +
				   getString("ToolTipDemo.got_milk") + "</font></center></html>");
		    milk = true;
		    moo = false;
		    tail = false;
		}
	    } else if((x > 280) && (x < 300) && (y > 20) && (y < 175)) {
		if(!tail) {
		    setToolTipText("<html><em><b>" + getString("ToolTipDemo.tail") + "</b></em></html>");
		    tail = true;
		    moo = false;
		    milk = false;
		}
	    } else if(moo || milk || tail) {
		setToolTipText(getString("ToolTipDemo.tooltip_features"));
		moo = false;
		tail = false;
		milk = false;
	    }
	    return true;
	}
    }
 
}