java培训第一天--画板

Posted 2020-08-26

  1 package day1;
  2 
  3 import java.awt.Color;
  4 import java.awt.Font;
  5 import java.awt.Graphics;
  6 import java.awt.Panel;
  7 import java.awt.event.MouseAdapter;
  8 import java.awt.event.MouseEvent;
  9 
 10 import javax.swing.JFrame;
 11 import javax.swing.JPanel;
 12 
 13 //import org.omg.CORBA.PUBLIC_MEMBER;
 14 
 15 //继承
 16 public class day1_test extends JPanel{
 17     /**
 18              * 
 19              */
 20             private static final long serialVersionUID = 1L;
 21             
 22             //定义颜色
 23             public Color colorRed = new Color(255,0,0);
 24             public Color colorBlue = new Color(0,0,255);
 25             public Color colorGreen = new Color(0, 255, 0);
 26             public Color rectcolor = colorRed;
 27             int x_axis = 0;
 28             int y_axis = 0;
 29             int paint_size = 0;
 30             boolean isbegin = true;
 31             boolean isclear = false;
 32     //画板界面：画框 画布
 33     public static void main(String args[])
 34     {
 35         //画框   声明居然和C#一样
 36         JFrame day1_frame = new JFrame();
 37         //变量用来指代内存中的一块空间用来存放不同的数据
 38         day1_frame.setVisible(true);
 39         //set size
 40         day1_frame.setSize(1300, 720);
 41         day1_frame.setResizable(false);
 42         //set position
 43         day1_frame.setLocationRelativeTo(null);
 44         //close programe
 45         day1_frame.setDefaultCloseOperation(2);
 46         //画布
 47         //JPanel day1_panel = new JPanel();
 48         //创建自己的画布
 49         day1_test mypanel = new day1_test();
 50         //添加panel
 51         //mypanel.setSize(1300, 55);
 52         day1_frame.add(mypanel);//这里调用了paint
 53         //在panel上面再建立panel
 54         //方法的重写 paint
 55         //这里调用timepaint
 56         mypanel.TimePaint();
 57     }
 58     
 59     /**
 60      * 自己定义的方法
 61      * **/
 62     
 63     
 64     public void paint(Graphics gr)
 65     {
 66         //画颜色选择区域
 67         //画笔
 68         //左上角x,y坐标
 69         gr.setColor(colorRed);
 70         gr.fillRect(0, 50, 1300,2);
 71         gr.setColor(colorBlue);
 72         gr.fillRect(0, 0, 1300, 2);
 73         //第一个按钮绿色
 74         gr.setColor(colorGreen);
 75         gr.fillRect(0, 0, 100, 50);
 76         
 77         gr.setColor( new Color(122,245,255));
 78         gr.fillRect(200, 0, 100, 50);
 79         
 80         gr.setColor(colorRed);
 81         gr.fillRect(400, 0, 100, 50);
 82         
 83         gr.setColor(Color.ORANGE);
 84         gr.fillRect(600, 0, 100, 50);
 85         
 86         gr.setColor(Color.pink);
 87         gr.fillRect(800, 0, 100, 50);
 88         
 89         gr.setColor(Color.orange);
 90         gr.drawRect(1000,0 , 100, 50);
 91         //font参数 字体 风格 字号
 92         gr.setFont(new Font("楷体", 0, 30));
 93         gr.drawString("clear", 1015, 35);
 94         
 95         gr.drawRect(1200, 0, 100, 50);
 96         gr.drawString("CLA", 1215, 35);
 97         
 98         //画线，两个点
 99         gr.setColor(Color.orange);
100         gr.drawLine(0, 55, 1300, 55);
101         //画线
102         if(!isbegin)
103         {
104            gr.setColor(rectcolor);
105            if(y_axis>55)
106            {
107                gr.fillRect(x_axis, y_axis, 10, 10);
108            }
109         }
110         //清屏的画法
111         if(isclear)
112         {
113            gr.setColor(getBackground());
114            gr.fillRect(0, 55, 1300, 665);
115            isclear = false;
116        }
117     }
118     
119     //定义鼠标事件
120     public void TimePaint()
121     {    
122         MouseAdapter MA = new MouseAdapter() {
123             //鼠标事件：定义鼠标事件的类型
124             @Override
125             //鼠标拖动事件,拖动鼠标激发
126             public void mouseDragged(MouseEvent e) {
127                 /*
128                  * 需要repaint方法
129                  * 不断刷新鼠标的坐标赋值给方框坐标
130                  * */
131                 //获取鼠标位置
132                 
133                 //基本类型 （结构简单int，共有8种：int[4]，float[2]，bool，char，string，）引用类型（结构复杂，比如画布。。。）
134                 int locationx = e.getX();
135                 int locationy = e.getY();
136                 x_axis = locationx;
137                 y_axis = locationy;
138                 isbegin = false;
139                 repaint();
140             }
141             
142             @Override
143             public void mouseClicked(MouseEvent e) {
144                 int locationx = e.getX();
145                 int locationy = e.getY();
146                 if(locationx>0&&locationx<100&&locationy>0&&locationy<50)
147                 {
148                     rectcolor = colorGreen;
149                 }
150                 else if (locationx>200&locationx<300&locationy>0&locationy<50) {
151                     rectcolor = new Color(122,245,255);
152                 }
153                 else if(locationx>400&locationx<500&locationy>0&locationy<50)
154                 {
155                     
156                     rectcolor = colorRed;
157                 }
158                 else if(locationx>600&locationx<700&locationy>0&locationy<50)
159                 {
160                     rectcolor = Color.ORANGE;
161                 }
162                 else if(locationx>800&locationx<900&locationy>0&locationy<50)
163                 {
164                     rectcolor = Color.pink;
165                 }
166                 else if(locationx>1000&locationx<1100&locationy>0&locationy<50)
167                 {
168                     rectcolor = getBackground();
169                 }
170                 else if(locationx>1200&locationx<1300&locationy>0&locationy<50)
171                 {
172                     isclear = true;
173                     //立即执行清屏
174                     repaint();
175                     rectcolor = colorRed;
176                 }
177             }
178         };
179         addMouseMotionListener(MA);//动态监听
180         addMouseListener(MA);//静态监听
181     }
182 }

 完全不想学java....