SquirrelJME/SquirrelJME

// -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
// ---------------------------------------------------------------------------
// SquirrelJME
//     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
// ---------------------------------------------------------------------------
// SquirrelJME is under the Mozilla Public License Version 2.0.
// See license.mkd for licensing and copyright information.
// ---------------------------------------------------------------------------

package cc.squirreljme.emulator.uiform;

import cc.squirreljme.jvm.mle.callbacks.UIFormCallback;
import cc.squirreljme.jvm.mle.constants.UIPixelFormat;
import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;

/**
 * This is used as a callback to update the icon on the list accordingly.
 *
 * @since 2020/11/17
 */
public class ListIconUpdate
    implements Runnable
{
    /** The callback used. */
    protected final UIFormCallback callback;
    
    /** The form to call on. */
    protected final SwingForm form;
    
    /** The item being called on. */
    protected final SwingItemList list;
    
    /** The entry being called on. */
    protected final ListEntry entry;
    
    /** The sub-index to call on. */
    protected final int subIndex;
    
    /** The image dimension. */
    protected final int dimension;
    
    /**
     * Used to update the icon accordingly.
     * 
     * @param __callback The callback to call.
     * @param __form The form being called on.
     * @param __swingItemList The
     * @param __entry The entry of the list.
     * @param __sub The sub-index.
     * @param __dim The dimension of the icon.
     * @throws NullPointerException On null arguments.
     * @since 2020/11/17
     */
    public ListIconUpdate(UIFormCallback __callback, SwingForm __form,
        SwingItemList __swingItemList, ListEntry __entry, int __sub, int __dim)
        throws NullPointerException
    {
        if (__callback == null || __form == null || __swingItemList == null ||
            __entry == null)
            throw new NullPointerException("NARG");
        
        this.callback = __callback;
        this.form = __form;
        this.list = __swingItemList;
        this.entry = __entry;
        this.subIndex = __sub;
        this.dimension = __dim;
    }
    
    /**
     * {@inheritDoc}
     * @since 2020/11/17
     */
    @Override
    public void run()
    {
        SwingItemList list = this.list;
        int dimension = this.dimension;
        
        // Draw icon into the given pixel buffer
        int[] pixelBuffer = new int[dimension * dimension];
        this.callback.paint(list,
            UIPixelFormat.INT_RGB888, dimension, dimension,
            pixelBuffer,0, null,
            0, 0, dimension, dimension, this.subIndex);
        
        // Load image from the pixels
        BufferedImage bi = new BufferedImage(dimension, dimension,
            BufferedImage.TYPE_INT_RGB);
        bi.setRGB(0, 0, dimension, dimension,
            pixelBuffer, 0, dimension);
        
        // Use this icon for the list, indicate the icon is no longer dirty
        this.entry._icon = new ImageIcon(bi);
        this.entry._dirtyIcon = false;
    }
}