zcolorpicker.java

用Java写的报表.功能如下: 0.内建网络打印,网络预览功能！ 1.文件操作。包括url 指定的文件。 2.全功能打印支持。包括打印预览。 3.Undo 和 redo。 4.合并单元格。 5.Cel

/*
 * Copyright 2002 EZCell , Inc. All rights reserved.
 * Version  1.0.
 * Author   W.John
 */
package ezcell;

import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import javax.swing.ImageIcon;
import javax.swing.JComboBox;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.ListCellRenderer;
import javax.swing.UIManager;
import javax.swing.border.CompoundBorder;
import javax.swing.border.LineBorder;
import javax.swing.border.MatteBorder;


/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2001</p>
 * <p>Company: </p>
 * @author unascribed
 * @version 1.0
 */
public class ZColorPicker extends JComboBox {
    static ImageIcon icon = new ImageIcon("images/thincross.gif");
    private Image image;
    private int[] values = new int[] { 0, 128, 192, 255 };

    public ZColorPicker() {
        init();
        setRenderer(new _Renderer());
    }

    public ZColorPicker(Image image) {
        this();

        this.image = image;
               setMaximumSize(new Dimension(90,40));
    }

    /**
     *
     * @return
     */
    Color getColor() {
        return (Color) getSelectedItem();
    }

    /**
     */
    private void init() {
        for (int r = 0; r < values.length; r++) {
            for (int g = 0; g < values.length; g++) {
                for (int b = 0; b < values.length; b++) {
                    Color c = new Color(values[r], values[g], values[b]);
                    addItem(c);
                }
            }
        }
    }

    /**
     * DOCUMENT ME!
     *
     * @version 1.00
     * @author W.John
     */
    class _Renderer extends JPanel implements ListCellRenderer {
        protected Color color = Color.black;
        protected Color focusColor = (Color) UIManager.get("List.selectionBackground");
        protected Color nonFocusColor = Color.white;
        protected boolean selected;

        /**
         *
         * @param list
         * @param obj
         * @param row
         * @param sel
         * @param hasFocus
         *
         * @return
         */
        public Component getListCellRendererComponent(JList list, Object obj, int row, boolean sel, boolean hasFocus) {
            if (hasFocus || sel) {
                setBorder(new CompoundBorder(new MatteBorder(2, 2, 2, 2, focusColor), new LineBorder(Color.black)));
            } else {
                setBorder(new CompoundBorder(new MatteBorder(2, 2, 2, 2, nonFocusColor), new LineBorder(Color.black)));
            }

            if (obj instanceof Color) {
                color = (Color) obj;
            }

            this.setPreferredSize(new Dimension(60, 11));
            selected = row == -1;

            return this;
        }

        /**
         *
         * @param g
         */
        public void paintComponent(Graphics g) {
            setBackground(color);
            super.paintComponent(g);

            if (selected && (image != null)) {
                g.drawImage(image, 2, 2, this);
            }
        }
    }
}