facebookchat.ui.common.JNABalloon.java Source code

Introduction

Here is the source code for facebookchat.ui.common.JNABalloon.java

Source

/* Copyright (c) 2007 Timothy Wall, All Rights Reserved
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.  
 */
package facebookchat.ui.common;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Component;
import java.awt.Font;

import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.geom.Rectangle2D;

import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JLabel;
import javax.swing.Popup;
import javax.swing.UIManager;
import javax.swing.border.EmptyBorder;

import com.sun.jna.examples.BalloonManager;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * ??;
 * ?????,
 * ???.
 * 
 * @author Timothy Wall, shinysky
 * 
 */
public class JNABalloon {

    private static Log log = LogFactory.getLog(JNABalloon.class);
    private static final int ICON_SIZE = 48;

    private static class InfoIcon implements Icon {
        public int getIconHeight() {
            return ICON_SIZE;
        }

        public int getIconWidth() {
            return ICON_SIZE;
        }

        public void paintIcon(Component c, Graphics graphics, int x, int y) {
            Font font = UIManager.getFont("TextField.font");
            Graphics2D g = (Graphics2D) graphics.create(x, y, getIconWidth(), getIconHeight());
            g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
            g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
            g.setFont(font.deriveFont(Font.BOLD, getIconWidth() * 3 / 4));
            g.setColor(Color.green.darker());
            final int SW = Math.max(getIconWidth() / 10, 4);
            g.setStroke(new BasicStroke(SW));
            g.drawArc(SW / 2, SW / 2, getIconWidth() - SW - 1, getIconHeight() - SW - 1, 0, 360);
            Rectangle2D bounds = font.getStringBounds("i", g.getFontRenderContext());
            g.drawString("i", Math.round((getIconWidth() - bounds.getWidth()) / 2 - getIconWidth() / 12), SW / 2
                    + Math.round((getIconHeight() - bounds.getHeight()) / 2 - bounds.getY() + getIconHeight() / 8));
            g.dispose();
        }
    }

    private MouseListener listener = new MouseAdapter() {
        public void mousePressed(MouseEvent e) {
            hidePopup(e);
        }
    };
    private JLabel content;
    private Popup popup;

    private void hidePopup(MouseEvent e) {
        e.getComponent().removeMouseListener(listener);
        if (popup != null)
            popup.hide();
    }

    public JNABalloon(String BALLOON_TEXT, JComponent owner, int X, int Y) {
        //System.setProperty("sun.java2d.noddraw", "true");
        content = new JLabel(BALLOON_TEXT);
        content.setIconTextGap(10);
        content.setBorder(new EmptyBorder(0, 8, 0, 8));
        content.setSize(content.getPreferredSize());
        content.setIcon(new InfoIcon());
        popup = BalloonManager.getBalloon(owner, content, X, Y);
        content.addMouseListener(listener);
        content.addFocusListener(new FocusListener() {
            public void focusGained(FocusEvent arg0) {
                log.debug("content get focusssssssssss");
            }

            public void focusLost(FocusEvent fe) {
                log.debug("content lost focusssssssssss");
                fe.getComponent().removeMouseListener(listener);
                if (popup != null)
                    popup.hide();
            }
        });
    }

    public void showBalloon() {
        //TODO requestFocus(), .
        //?, ??.
        //content.requestFocusInWindow();
        //content.requestFocus(true);
        content.requestFocus();
        popup.show();
    }

    public Popup getBalloon() {
        return popup;
    }
}