Java Swing Graphics Graphics2D的一般用法

Java Swing Graphics Graphics2D的一般用法:

贝塞尔曲线参考：http://www.zhangxinxu.com/wordpress/2014/06/deep-understand-svg-path-bezier-curves-command/

贝塞尔曲线参考2：http://blog.chinaunix.net/uid-20622737-id-3161025.html

package com.srie.test;

import java.awt.BasicStroke;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.EventQueue;

import java.awt.Font;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Shape;

import java.awt.Stroke;

import java.awt.geom.Arc2D;

import java.awt.geom.CubicCurve2D;

import java.awt.geom.Ellipse2D;

import java.awt.geom.Line2D;

import java.awt.geom.QuadCurve2D;

import java.awt.geom.Rectangle2D;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.border.EmptyBorder;

public class JFrame001 extends JFrame {

    private static final long serialVersionUID = -8298152118685661613L;

    private JPanel contentPane;

    public static void main(String[] args) {

        EventQueue.invokeLater(new Runnable() {

            public void run() {

                try {

                    JFrame001 frame = new JFrame001();

                    frame.setVisible(true);

                } catch (Exception e) {

                    e.printStackTrace();

                }

            }

        });

    }

    /**

     * Create the frame.

     */

    public JFrame001() {

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        setBounds(100, 100, 850, 600);

        contentPane = new JPanel();

        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));

        contentPane.setLayout(new BorderLayout(0, 0));

        setContentPane(contentPane);

        JScrollPane scrollPane = new JScrollPane();

        contentPane.add(scrollPane, BorderLayout.CENTER);

        JPanel panel = new JPanel() {

            private static final long serialVersionUID = 1L;

            @Override public void paint(Graphics g) {

                super.paint(g);

                // g绘制圆弧

                g.drawArc(10, 10, 100, 50, 270, 200);

                // g绘制线段

                g.drawLine(10, 10, 50, 50);

                // g绘制圆形

                g.drawOval(10, 80, 50, 30);

                // g绘制矩形

                g.setColor(Color.RED);

                g.drawRect(80, 80, 100, 50);

                // g绘制字符串

                g.drawString("hello", 190, 80);

                Graphics2D g2 = (Graphics2D) g;

                // g2绘制Ellipse2D

                Shape s01 = new Ellipse2D.Float(50, 110, 20, 20);

                g2.draw(s01);

                // g2绘制Line2D

                Shape s02 = new Line2D.Float(10, 150, 50, 150);

                g2.setColor(Color.BLACK);

                Stroke stroke = new BasicStroke(5);

                g2.setStroke(stroke);

                g2.draw(s02);

                // g2绘制Line2D, 使用BasicStroke

                Shape s03 = new Line2D.Float(10, 180, 150, 180);

                g2.setColor(Color.BLACK);

                Stroke stroke02 = new BasicStroke(5, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 10.0f, new float[] { 20, 5 }, 10);

                g2.setStroke(stroke02);

                g2.draw(s03);

                // g2绘制Arc2D

                Stroke stroke03 = new BasicStroke(1);

                g2.setStroke(stroke03);

                Shape s04 = new Arc2D.Float(10, 200, 40, 40, 0, 90, Arc2D.OPEN);

                g2.draw(s04);

                s04 = new Arc2D.Float(60, 200, 40, 40, -30, 90, Arc2D.CHORD);

                g2.draw(s04);

                s04 = new Arc2D.Float(110, 200, 40, 40, 0, 90, Arc2D.PIE);

                g2.draw(s04);

                // g2不能绘制Point2D

                // new Point2D.Float(10,210);

                // g2绘制Rectangle2D

                Shape s05 = new Rectangle2D.Float(10, 250, 130, 30);

                g2.draw(s05);

                // g2绘制CubicCurve2D

                Shape s06 = new CubicCurve2D.Float(10, 310, 35, 280, 85, 340, 100, 310);

                g2.draw(s06);

                s06 = new Line2D.Float(10, 310, 35, 280);

                g2.draw(s06);

                s06 = new Line2D.Float(35, 280, 85, 340);

                g2.draw(s06);

                s06 = new Line2D.Float(85, 340, 100, 310);

                g2.draw(s06);

                // g2绘制QuadCurve2D

                Shape s07 = new QuadCurve2D.Float(10, 350, 55, 370, 100, 350);

                g2.draw(s07);

                s07 = new Line2D.Float(10, 350, 55, 370);

                g2.draw(s07);

                s07 = new Line2D.Float(55, 370, 100, 350);

                g2.draw(s07);

                // 设置Font, drawString;

                Font font = new Font("黑体", Font.BOLD, 16);

                g2.setFont(font);

                g2.drawString("中文字符串", 10, 390);

            }

        };

        panel.setPreferredSize(new Dimension(2000, 1000));

        scrollPane.setViewportView(panel);

        JPanel panelColumn = new JPanel();

        scrollPane.setColumnHeaderView(panelColumn);

        JLabel lblNewLabel = new JLabel("New label");

        panelColumn.add(lblNewLabel);;

        JPanel panelRow = new JPanel();

        scrollPane.setRowHeaderView(panelRow);

        JLabel lblNewLabel_1 = new JLabel("New label");

        panelRow.add(lblNewLabel_1);

    }

}