swing 圆角按钮_swing 自定义button

今天的任务做一个button时，在取图片时出错了 。

ImageIcon ImageIcon1 = new ImageIcon("drive.png");会提示找不到图片

ImageIcon ImageIcon1 = new ImageIcon(RButton.class.getResource("drive.png"));就ok了

ImageIcon ImageIcon1 = new ImageIcon("E：/drive.png");也可以

package com.swing.button.a;

/**

* @(#)RJButton.java 0.1.0 2007-9-11

*/

import java.awt.AlphaComposite;

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Image;

import java.awt.RenderingHints;

import java.awt.Shape;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.geom.RoundRectangle2D;

import javax.swing.ImageIcon;

import javax.swing.JButton;

/**

* Custom JButton

*/

public class RButton extends JButton {

private static final long serialVersionUID = 39082560987930759L;

public static final Color BUTTON_COLOR1 = new Color(205, 255, 205);

public static final Color BUTTON_COLOR2 = new Color(51, 154, 47);

// public static final Color BUTTON_COLOR1 = new Color(125, 161, 237);

// public static final Color BUTTON_COLOR2 = new Color(91, 118, 173);

public static final Color BUTTON_FOREGROUND_COLOR = Color.WHITE;

private boolean hover;

@Override

protected void paintComponent(Graphics g) {

Graphics2D g2d = (Graphics2D) g.create();

int h = getHeight();

int w = getWidth();

float tran = 0.3F;

g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,

RenderingHints.VALUE_ANTIALIAS_ON);

// 抗锯齿提示值——使用抗锯齿模式完成呈现

// 告诉绘制API我们需要平滑一点，否则绘制出来会有很多锯齿哟。

g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,

tran));

// 告诉绘图API我们需要绘制一个有透明度的，tran就是透明度(0-1)

// RoundRectangle2D，这个就是边角都为圆角的方形

RoundRectangle2D.Float r2d = new RoundRectangle2D.Float(0, 0, w, h, 5,

5);

/*

* x - 设置此 RoundRectangle2D 的 X 坐标 y - 设置此 RoundRectangle2D 的 Y 坐标 w -

* 设置此 RoundRectangle2D 的宽度 h - 设置此 RoundRectangle2D 的高度 arcWidth - 设置此

* RoundRectangle2D 的弧宽 arcHeight - 设置此 RoundRectangle2D 的弧高

*/

/* Rectangle2D.Float r2d = new Rectangle2D.Float(0,0,20,20); */

Shape clip = g2d.getClip();

g2d.clip(r2d);

g2d.fillRect(0, 0, w, h);

g2d.setClip(clip);

System.out.println(clip.getBounds());

g2d.drawRoundRect(0, 0, w - 1, h - 1, 5, 5);

// 画图片

// g2d.setClip(0,0,w,h);

Image image = this.getToolkit().createImage("drive.png");

ImageIcon ImageIcon1 = new ImageIcon(

RButton.class.getResource("drive.png"));

g2d.drawImage(ImageIcon1.getImage(), 10, 10, null);

// 倒三角

g2d.setClip(w / 2, 0, w, h);

/*

* x - 新剪贴区矩形的 x 坐标。 y - 新剪贴区矩形的 y 坐标。 width - 新剪贴区矩形的宽度。 height -

* 新剪贴区矩形的高度。

*/

g2d.setColor(Color.black);

int x1 = (w / 8) * 5;

int y1 = h / 4;

int x2 = (w / 8) * 7;

int y2 = h / 4;

int x3 = (w / 8) * 6;

int y3 = (h / 4) * 3;

g2d.fillPolygon(new int[] { x1, x2, x3 }, new int[] { y1, y2, y3 }, 3);// 三角形

g2d.dispose();

super.paintComponent(g);

}

public RButton(String icon1) {

ImageIcon ImageIcon1 = new ImageIcon(RButton.class.getResource(icon1));

// setLayout(new BorderLayout());

setFont(new Font("system", Font.PLAIN, 12));

/*

* JLabel j1 = new JLabel(ImageIcon1); j1.setBounds(0, 0, 20, 20);

* add(j1,BorderLayout.LINE_START);

*/

setBorderPainted(false);// 不绘制边框

setForeground(BUTTON_COLOR2);

setFocusPainted(false);

setContentAreaFilled(false);// 不绘制内容

addMouseListener(new MouseAdapter() {

@Override

public void mouseEntered(MouseEvent e) {

// setForeground(BUTTON_FOREGROUND_COLOR);

// setBackground(Color.red);

setBorderPainted(true);

repaint();

}

@Override

public void mouseExited(MouseEvent e) {

setForeground(BUTTON_COLOR2);

setBorderPainted(false);

repaint();

}

});

}

}

package com.swing.button.a;

import java.awt.Dimension;

import javax.swing.JFrame;

import javax.swing.JPanel;

public class TestButton extends JFrame{

/**

*

*/

private static final long serialVersionUID = -6604974096681305078L;

/**

* @param args

*/

public static void main(String[] args) {

JFrame j = new TestButton();

JPanel p = new JPanel();

RButton rb = new RButton("drive.png");

rb.setPreferredSize(new Dimension(50, 30));

//rb.setText("按钮");

p.add(rb);

j.add(p);

j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

j.setSize(200, 200);

j.setVisible(true);

}

}