画板（未加监听）

最新推荐文章于 2024-05-08 16:38:56 发布

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画板是每个计算机的原有程序，那么如何自己将其编译呢？

下面是在超哥的指导下用JAVA语言编写的未加监听的版本：

首先写一个DrawBoard类，里面定义个主面板和要有的方法就OK了：

MainFrame mf = new MainFrame();

mf.ShowUI();

然后创建主面板MainFrame类，里面添加各种ShowUI需要有的方法：

//初始化

init();

//创建菜单

creatMenu();

//工具面板

addToolsPanel();

//颜色面板

addColorsPanel();

//绘制面板

addDrawPanel();

//设置可见

setVisible(true);

然后实现这些方法：

private void addDrawPanel() {//内容具体暂不给出}

private void addColorsPanel() {//内容具体暂不给出}

private void addToolsPanel() {//内容具体暂不给出}

private void creatMenu() {//内容具体暂不给出}

private void init() {//内容具体暂不给出}

再创建绘制面板DrawPanel类、颜色面板ColorsPanel类、工具面板ToolsPanel类，里面编写如何实现。

下面给出具体代码（仅供参考哈）：

DrawBoard：

package HUABAN0;

public class DrawBoard {

public static void main(String[] args) {

// TODO Auto-generated method stub

MainFrame mf = new MainFrame();

mf.ShowUI();

}

MainFrame:

package HUABAN0;

import java.awt.BorderLayout;

import javax.swing.ImageIcon;

import javax.swing.JFrame;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;

public class MainFrame extends JFrame{

public void ShowUI(){

//初始化

init();

//创建菜单

creatMenu();

//工具面板

addToolsPanel();

//颜色面板

addColorsPanel();

//绘制面板

addDrawPanel();

//设置可见

setVisible(true);

//监听

//addListener();

}

private void addDrawPanel() {

// TODO Auto-generated method stub

DrawPanel drawPanel = new DrawPanel();

add(drawPanel,BorderLayout.CENTER);

}

private void addColorsPanel() {

// TODO Auto-generated method stub

ColorsPanel colorsPanel = new ColorsPanel();

add(colorsPanel,BorderLayout.SOUTH);

}

private void addToolsPanel() {

// TODO Auto-generated method stub

ToolsPanel toolsPanel = new ToolsPanel();

add(toolsPanel,BorderLayout.WEST);

}

private void creatMenu() {

// TODO Auto-generated method stub

//增加菜单条

JMenuBar jmb = new JMenuBar();

//增加菜单栏

JMenu jm1 = new JMenu("File");

JMenu jm2 = new JMenu("Edit");

//增加菜单项

JMenuItem ji1 = new JMenuItem("New");

JMenuItem ji2 = new JMenuItem("Open");

//菜单栏加入菜单条

jmb.add(jm1);

jmb.add(jm2);

//菜单项目加入菜单栏

jm1.add(ji1);

jm1.add(ji2);

//菜单条加入到面板

setJMenuBar(jmb);

}

private void init() {

// TODO Auto-generated method stub

//设置名称

setTitle("My DrawBorad");

//设置大小

//通过相对路径添加一个ImageIcon对象

ImageIcon ii = new ImageIcon("img/icon.png");

//从ImageIcon对象中获取Image，设置上去

setIconImage(ii.getImage());

setSize(500,500);

//设置位置

setLocationRelativeTo(null);

//设置关闭

setDefaultCloseOperation(EXIT_ON_CLOSE);

}

ColorPanel:

package HUABAN0;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.FlowLayout;

import javax.swing.JButton;

import javax.swing.JPanel;

import javax.swing.border.BevelBorder;

import javax.swing.border.EmptyBorder;

import javax.swing.border.LineBorder;

@SuppressWarnings("serial")

public class ColorsPanel extends JPanel{

//增加颜色数组

Color[]colors = {

new Color(0, 0, 0),new Color(128, 128, 128),

new Color(128, 0, 0), new Color(128, 128, 0),

new Color(0, 128, 0),new Color(0, 128, 128),

new Color(0, 0, 128),new Color(128, 0, 128),

new Color(128, 128, 64),

new Color(0, 64, 64), new Color(0, 128, 255),

new Color(0, 64, 128), new Color(128, 0, 255),

new Color(128, 64, 0), new Color(255, 255, 255),

new Color(192, 192, 192), new Color(255, 0, 0),

new Color(255, 255, 0), new Color(0, 255, 0),

new Color(0, 255, 255), new Color(0, 0, 255),

new Color(255, 0, 255), new Color(255, 255, 128),

new Color(0, 255, 128), new Color(128, 255, 255),

new Color(128, 128, 255), new Color(255, 0, 128),

new Color(255, 128, 64)

};

public ColorsPanel(){

//设置颜色面板大小

setPreferredSize(new Dimension(0, 50));//轻量级组建大小

//设置线框颜色

setBorder(new LineBorder(Color.GRAY));

//设置位置（流式布局）

setLayout(new FlowLayout(FlowLayout.LEFT,0,0));

//创建底下颜色面板

JPanel back = createBack();

back.setLayout(new FlowLayout(FlowLayout.LEFT,0,0));

//创建左边选择面板

JPanel slecteselectedColor = createSelected();

//创建右边全部颜色面板

JPanel allColor = createAll();

//将左右面板添加到底下面板中去

back.add(slecteselectedColor);

back.add(allColor);

add(back);

}

private JPanel createBack() {

//创建一个面板

JPanel back = new JPanel();

//设置大小

back.setPreferredSize(new Dimension(250, 50));

//设置一个空的边框

back.setBorder(new EmptyBorder(10, 0, 10, 10));

return back;

}

private JPanel createAll() {

JPanel jp = new JPanel();

//流式布局

jp.setLayout(new FlowLayout(FlowLayout.LEFT,0,0));

//所占用的长和宽

jp.setPreferredSize(new Dimension(210,30));

//定义一个凸起按钮

BevelBorder border1 = new BevelBorder(0,Color.WHITE,Color.GRAY);

for (int i = 0; i < colors.length; i++) {

JButton jbt = new JButton(); //定义按钮组建

jbt.setPreferredSize(new Dimension(15, 15));//定义组建大小

jbt.setBackground(colors[i]); //定义组建颜色

jbt.setBorder(border1); //按钮设置为凸起

jp.add(jbt); //按钮加入到面板中

}

return jp;

}

private JPanel createSelected() {

// TODO Auto-generated method stub

JPanel jp = new JPanel();

//选择区域设置大小

jp.setPreferredSize(new Dimension(30, 30));

//设置背景颜色为白色

jp.setBackground(new Color(128,255,255));

//设置布局为绝对布局,每一个加入到容器的组建必须setBonds()

jp.setLayout(null);

//设置边框

BevelBorder border = new BevelBorder(1,Color.WHITE,Color.GRAY);

jp.setBorder(border);

//增加按钮

BevelBorder border1 = new BevelBorder(0,Color.WHITE,Color.GRAY);

JButton jbt1 = new JButton();

jbt1.setBackground(Color.BLACK);

jbt1.setBounds(5,5,15,15);

jbt1.setEnabled(false);

jbt1.setBorder(border1);

JButton jbt2 = new JButton();

jbt2.setBackground(Color.WHITE);

jbt2.setBounds(10,10,15,15);

jbt2.setEnabled(false);

jbt2.setBorder(border1);

jp.add(jbt1);

jp.add(jbt2);

return jp;

}

DrawPanel:

package HUABAN0;

import java.awt.Color;

import javax.swing.JPanel;

import javax.swing.border.LineBorder;

@SuppressWarnings("serial")

public class DrawPanel extends JPanel{

public DrawPanel(){

//设置背景颜色

setBackground(Color.WHITE);

//创建颜色,为边框颜色做准备

Color color = new Color(171,171,171);

//创建线条边框

LineBorder lineBorder = new LineBorder(color,4);

//设置边框

setBorder(lineBorder);

}

ToolsPanel:

package HUABAN0;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.FlowLayout;

import java.awt.Insets;

import javax.swing.ButtonGroup;

import javax.swing.ImageIcon;

import javax.swing.JPanel;

import javax.swing.JRadioButton;

import javax.swing.border.BevelBorder;

@SuppressWarnings("serial")

public class ToolsPanel extends JPanel{

public ToolsPanel(){

//设置左边边界大小

setPreferredSize(new Dimension(60,0));

//设置背景颜色

setBackground(new Color(240,240,240));

//在中间创建流式布局

setLayout(new FlowLayout(FlowLayout.CENTER,0,0));

//创建一个向上凸起的边框

BevelBorder border = new BevelBorder(BevelBorder.RAISED, new Color(240,240,240),new Color(160,160,160));

setBorder(border);

//创建一个按钮组，使所有按钮能够互斥

ButtonGroup bg = new ButtonGroup();

for(int i=1;i<=16;i++){

//创建四个图标

ImageIcon i1 = new ImageIcon("img/"+i+"-1.png");

ImageIcon i2 = new ImageIcon("img/"+i+"-2.png");

ImageIcon i3 = new ImageIcon("img/"+i+"-3.png");

ImageIcon i4 = new ImageIcon("img/"+i+"-4.png");

//创建单选按钮

JRadioButton jrb = new JRadioButton();

//设置轻量级组建大小

jrb.setPreferredSize(new Dimension(25,25));

//设置按钮四种状态下标语

jrb.setIcon(i1); //放在一边时

jrb.setRolloverIcon(i2); //移动到上面时

jrb.setPressedIcon(i3); //按压时

jrb.setSelectedIcon(i4); //选择时

jrb.setMargin(new Insets(0, -2, 0, 0));//？？？？？

add(jrb);

bg.add(jrb);

}

Img:图片文件（将其打包在img文件夹中）

图片地址：

http://pan.baidu.com/share/link?shareid=2126338544&uk=522781993