/*
 * SIP Communicator, the OpenSource Java VoIP and Instant Messaging client.
 *
 * Distributable under LGPL license.
 * See terms of license at gnu.org.
 */
package net.java.sip.communicator.impl.gui.customcontrols;

import java.awt.*;

import javax.swing.*;

import net.java.sip.communicator.impl.gui.utils.*;
import net.java.sip.communicator.swing.*;

/**
 * The <tt>SIPCommToggleButton</tt> is a flexible <tt>JToggleButton</tt> that
 * allows to configure its background, its icon, the look when a mouse is over
 * it, etc.
 * 
 * @author Yana Stamcheva
 */
public class SIPCommToggleButton
    extends JToggleButton
{
    private Image bgImage;

    private Image bgRolloverImage;

    private Image iconImage;

    private Image pressedImage;

    /**
     * Creates a button with custom background image, rollover image and
     * icon image.
     * 
     * @param bgImage       The background image.
     * @param rolloverImage The rollover image.
     * @param iconImage     The icon.
     */
    public SIPCommToggleButton(Image bgImage,
            Image rolloverImage, 
            Image iconImage,
            Image pressedImage)
    {
        this.bgImage = bgImage;
        this.bgRolloverImage = rolloverImage;
        this.iconImage = iconImage;
        this.pressedImage = pressedImage;

        this.setPreferredSize(new Dimension(this.bgImage.getWidth(null),
                this.bgImage.getHeight(null)));

        this.setIcon(new ImageIcon(this.iconImage));
    }

    /**
     * Creates a button with custom background image and rollover image.
     * 
     * @param bgImage The background button image.
     * @param rolloverImage The rollover button image.
     */
    public SIPCommToggleButton(Image bgImage, Image rolloverImage)
    {
        this.bgImage = bgImage;
        this.bgRolloverImage = rolloverImage;

        this.setPreferredSize(new Dimension(this.bgImage.getWidth(null),
                this.bgImage.getHeight(null)));
    }

    /**
     * Overrides the <code>paintComponent</code> method of <tt>JButton</tt>
     * to paint the button background and icon, and all additional effects
     * of this configururable button.
     * 
     * @param g The Graphics object.
     */
    
    public void paintComponent(Graphics g)
    {
        g = g.create();
        try
        {
            internalPaintComponent(g);
        }
        finally
        {
            g.dispose();
        }
    }

    private void internalPaintComponent(Graphics g)
    {
        AntialiasingManager.activateAntialiasing(g);

        if (this.bgImage != null)
        {
            // If there's no icon, we make grey the backgroundImage
            // when disabled.
            if (this.iconImage == null && !isEnabled())
            {
                Image disabledImage = new ImageIcon(LightGrayFilter
                        .createDisabledImage(bgImage)).getImage();

                g.drawImage(disabledImage, 0, 0, this);
            }
            else {
                g.drawImage(this.bgImage, 0, 0, this);
            }
        }

        if (this.getModel().isRollover() && this.bgRolloverImage != null)
        {
            g.drawImage(this.bgRolloverImage, 0, 0, this);
        }

        if (this.getModel().isSelected() && this.pressedImage != null)
        {
            g.drawImage(this.pressedImage, 0, 0, this);
        }

        if (this.iconImage != null)
        {
            if (!isEnabled())
            {
                Image disabledImage = new ImageIcon(LightGrayFilter
                        .createDisabledImage(iconImage)).getImage();

                g.drawImage(disabledImage,
                        (this.bgImage.getWidth(null) - disabledImage
                                .getWidth(null)) / 2, (this.bgImage
                                .getHeight(null) - disabledImage
                                .getHeight(null)) / 2, this);
            }
            else
            {
                g.drawImage(this.iconImage,
                        (this.bgImage.getWidth(null) - this.iconImage
                                .getWidth(null)) / 2, (this.bgImage
                                .getHeight(null) - this.iconImage
                                .getHeight(null)) / 2, this);
            }
        }
    }

    /**
     * Returns the background image of this button.
     * @return the background image of this button.
     */
    public Image getBgImage()
    {
        return bgImage;
    }

    /**
     * Sets the background image to this button.
     * @param bgImage The background image to set.
     */
    public void setBgImage(Image bgImage)
    {
        this.bgImage = bgImage;
    }

    /**
     * Returns the background rollover image of this button.
     * @return the background rollover image of this button.
     */
    public Image getBgRolloverImage()
    {
        return bgRolloverImage;
    }

    /**
     * Sets the background rollover image to this button.
     * @param bgRolloverImage The background rollover image to set.
     */
    public void setBgRolloverImage(Image bgRolloverImage)
    {
        this.bgRolloverImage = bgRolloverImage;
    }

    /**
     * Returns the icon image of this button.
     * @return the icon image of this button.
     */
    public Image getIconImage()
    {
        return iconImage;
    }

    /**
     * Sets the icon image to this button.
     * @param iconImage The icon image to set.
     */
    public void setIconImage(Image iconImage)
    {
        this.iconImage = iconImage;
        this.repaint();
    }
}