zgradientbrush.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.GradientPaint;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Point;
import java.awt.geom.Point2D;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;


/**
 * put your documentation comment here
 */
public class ZGradientBrush extends ZBrush implements Cloneable, Serializable {
    private Color fromColor;
    private Color toColor;
    transient private Point2D.Float fromPos;
    transient private Point2D.Float toPos;
    private boolean loop;

    ZGradientBrush(Point fromPos, Color fromColor, Point toPos, Color toColor, boolean loop) {
        this.fromPos = new Point2D.Float(fromPos.x / 100.0f, fromPos.y / 100.0f);
        this.fromColor = fromColor;
        this.toPos = new Point2D.Float(toPos.x / 100.0f, toPos.y / 100.0f);
        this.toColor = toColor;
        this.loop = loop;
    }

    /**
     *
     * @return
     */
    public Color getFromColor() {
        return fromColor;
    }

    /**
     *
     * @return
     */
    public Point getFromPoint() {
        return new Point((int) (fromPos.x * 100), (int) (fromPos.y * 100));
    }

    /**
     *
     * @param g2
     * @param rect
     */
    public void setPaint(Graphics2D g2, ZRect rect) {
        g2.setPaint(
                new GradientPaint(rect.left + (fromPos.x * rect.getWidth()), rect.top + (fromPos.y * rect.getHeight()),
                                  fromColor, rect.left + (toPos.x * rect.getWidth()), rect.top + (toPos.y * rect.getHeight()),
                                  toColor, loop));
    }

    /**
     *
     * @return
     */
    public Color getToColor() {
        return toColor;
    }

    /**
     *
     * @return
     */
    public Point getToPoint() {
        return new Point((int) (toPos.x * 100), (int) (toPos.y * 100));
    }

    /**
     * put your documentation comment here
     * @return
     */
    public Object clone() {
        ZGradientBrush brush = null;
        brush = (ZGradientBrush) super.clone();
        brush.fromPos = new Point2D.Float(fromPos.x, fromPos.y);
        brush.fromColor = new Color(fromColor.getRGB());
        brush.toPos = new Point2D.Float(toPos.x, toPos.y);
        brush.toColor = new Color(toColor.getRGB());

        return brush;
    }

    /**
     *
     * @param g2
     * @param rect
     */
    public void fill(Graphics2D g2, ZRect rect) {
        Paint p = g2.getPaint();
        setPaint(g2, rect);
        g2.fillRect(rect.left, rect.top, rect.getWidth(), rect.getHeight());
        g2.setPaint(p);
    }

    /**
     *
     * @param ois
     *
     * @throws ClassNotFoundException
     * @throws IOException
     */
    private void readObject(ObjectInputStream ois) throws ClassNotFoundException, IOException {
        ois.defaultReadObject();
        fromPos = new Point2D.Float(0, 0);
        toPos = new Point2D.Float(0, 0);
        fromPos.x = ois.readFloat();
        fromPos.y = ois.readFloat();
        toPos.x = ois.readFloat();
        toPos.y = ois.readFloat();
    }

    /**
     *
     * @param oos
     *
     * @throws IOException
     */
    private void writeObject(ObjectOutputStream oos) throws IOException {
        oos.defaultWriteObject();
        oos.writeFloat(fromPos.x);
        oos.writeFloat(fromPos.y);
        oos.writeFloat(toPos.x);
        oos.writeFloat(toPos.y);
    }
}