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/*  Copyright 1999 Vince Via [email protected]
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
*/
package com.viaoa.image;

import java.lang.reflect.*;
import java.awt.*;
import java.awt.image.*;
import java.awt.event.*;
import java.util.*;

import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;
import javax.swing.border.*;

import com.viaoa.hub.*;
import com.viaoa.util.*;

/**
    creates an image from multiple images
*/
public class MultiImageIcon extends ImageIcon {
    Image[] images;
    int w,h, gap;
    double scale = 1.0;
    Color backgroundColor = Color.white;
    private Image img;

    public MultiImageIcon(Image[] images) {
        this(images, 1);
    }
    public MultiImageIcon(Image[] images, int gap) {
        this.images = images;
        this.gap = Math.max(gap,0);
        for (int i=0; images != null && i < images.length; i++) {
            if (images[i] != null) {
                w += images[i].getWidth(null);
                h = Math.max(h, images[i].getHeight(null));
                w += gap;
            }
        }
    }
        
    public void setScale(double d) {
        this.scale = d;
        img = null;
    }
    public double getScale() {
        return this.scale;
    }

    public int getIconHeight() {
        return (int) (h*scale);
    }
    public int getIconWidth() {
        return (int) (w*scale);
    }

    public void setBackground(Color c) {
        backgroundColor = c;
        img = null;
    }
    public Color getBackground() {
        return backgroundColor;
    }

    
    public void paintIcon(Component c, Graphics g, int x, int y) {
        if (scale != 1.0 && g instanceof Graphics2D) {
            ((Graphics2D)g).scale(scale, scale);
        }
        for (int i=0; images != null && i < images.length; i++) {
            if (images[i] != null) {
                g.drawImage(images[i], x, y, null);
                x += images[i].getWidth(null);
                x += gap;
            }
        }
    }

    public Image getImage() {
        if (img == null) {
            if (images == null || images.length == 0) {
                BufferedImage bi = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
                Graphics g = bi.getGraphics();
                g.setColor(new Color(0,0,0,0));
                g.fillRect(0, 0, 1, 1);
                img = bi;
            }
            else {
                BufferedImage bi = new BufferedImage(getIconWidth(), getIconHeight(), BufferedImage.TYPE_INT_ARGB);
                Graphics g = bi.getGraphics();
                if (backgroundColor != null) {
                    g.setColor(backgroundColor);
                    g.fillRect(0, 0, w, h);
                }
                paintIcon(null, g, 0, 0);
                img = bi;
            }
        }
        return img;
    }

}