import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JRadioButton;
import javax.swing.JCheckBox;
import javax.swing.JButton;
import javax.swing.ButtonGroup;
import javax.swing.JPanel;
import javax.swing.JComboBox;
import java.awt.FlowLayout;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseMotionAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.*;
class GraphicTest extends JFrame implements ActionListener {
JLabel x1L, y1L, x2L, y2L, z1L, z2L;
JTextField x1T, y1T, x2T, y2T, z1T, z2T;
JCheckBox fill;
JRadioButton line, circle, rect, roundR, arc;
JButton draw;
DrCanvas can;
JComboBox combo;
int x1, y1, x2, y2, z1, z2;
public GraphicTest() {
super("간단 그림판");//setTitle("간단 그림판"); //super는 맨위쪽
x1L = new JLabel("x1L");
y1L = new JLabel("y1L");
x2L = new JLabel("x2L");
y2L = new JLabel("y2L");
z1L = new JLabel("z1L");
z2L = new JLabel("z2L");
x1T = new JTextField("100",4);
y1T = new JTextField("150",4);
x2T = new JTextField("200",4);
y2T = new JTextField("250",4);
z1T = new JTextField("80",4);
z2T = new JTextField("80",4);
fill = new JCheckBox("채우기");
line = new JRadioButton("선");
circle = new JRadioButton("원");
rect = new JRadioButton("사각형", true);
roundR = new JRadioButton("둥근사각형");
arc = new JRadioButton("호");
ButtonGroup bg = new ButtonGroup();
bg.add(line);
bg.add(circle);
bg.add(rect);
bg.add(roundR);
bg.add(arc);
draw = new JButton("그리기");
can = new DrCanvas();
String[] color = {"빨강", "초록", "파랑", "검정", "보라"};
combo = new JComboBox(color);
JPanel p = new JPanel(); //FlowLayout(순서배치)
p.add(x1L); p.add(x1T);
p.add(y1L); p.add(y1T);
p.add(x2L); p.add(x2T);
p.add(y2L); p.add(y2T);
p.add(z1L); p.add(z1T);
p.add(z2L); p.add(z2T);
p.add(fill);
JPanel p2 = new JPanel();
p2.add(line);
p2.add(circle);
p2.add(rect);
p2.add(roundR);
p2.add(arc);
p2.add(combo);
p2.add(draw);
getContentPane().add("North", p);
getContentPane().add("South", p2);
getContentPane().add("Center", can);
setBounds(500,100,600,500);
setVisible(true);
setDefaultCloseOperation(EXIT_ON_CLOSE);
//이벤트 처리
draw.addActionListener(this);
line.addActionListener(this);
circle.addActionListener(this);
rect.addActionListener(this);
roundR.addActionListener(this);
arc.addActionListener(this);
can.addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e) {
x1T.setText(String.valueOf(e.getX()));
y1T.setText(String.valueOf(e.getY()));
can.repaint();
}
});
can.addMouseMotionListener(new MouseMotionAdapter(){
public void mouseDragged(MouseEvent e){
x2T.setText(String.valueOf(e.getX()));
y2T.setText(String.valueOf(e.getY()));
can.repaint();
}
});
}//GraphicTest( )
//ActionListner override
public void actionPerformed(ActionEvent e){
can.repaint(); //update () -> paint() 순서로 호출
}
class DrCanvas extends Canvas {
public DrCanvas() {
this.setBackground(new Color(255,255,100)); //바탕색 -연한노랑
setForeground(new Color(255,0,0));//글자색
}//DrCanvas( )
public void paint(Graphics g) {
//좌표 얻어오기
x1 = Integer.parseInt(x1T.getText().trim()); //trim - 앞뒤공백제거
y1 = Integer.parseInt(y1T.getText().trim());
x2 = Integer.parseInt(x2T.getText().trim());
y2 = Integer.parseInt(y2T.getText().trim());
z1 = Integer.parseInt(z1T.getText().trim());
z2 = Integer.parseInt(z2T.getText().trim());
//색
switch(combo.getSelectedIndex()) {
case 0: this.setForeground(new Color (255,0,0));
break;
case 1: this.setForeground(new Color (0,255,0));
break;
case 2: this.setForeground(new Color (0,0,255));
break;
case 3: this.setForeground(new Color (0,0,0));
break;
case 4: this.setForeground(new Color (255,0,255));
break;
}//switch
int startX = x1 < x2 ? x1 : x2;
int startY = y1 < y2 ? y1 : y2;
int width = x1 < x2 ? x2-x1 : x1-x2;
int height = y1 < y2 ? y2-y1 : y1-y2;
//도형 그리기
if(fill.isSelected()) { //채우기 선택
if(line.isSelected())
g.drawLine(x1, y1, x2, y2);
else if(circle.isSelected())
g.fillOval(startX, startY, width, height);
else if(rect.isSelected())
g.fillRect(startX, startY, width, height);
else if(roundR.isSelected())
g.fillRoundRect(startX, startY, width, height, z1, z2);
else if(arc.isSelected())
g.fillArc(startX, startY, width, height, z1, z2);
}else { //채우기 해제
if(line.isSelected())
g.drawLine(x1, y1, x2, y2);
else if(circle.isSelected())
g.drawOval(startX, startY, width, height);
else if(rect.isSelected())
g.drawRect(startX, startY, width, height);
else if(roundR.isSelected())
g.drawRoundRect(startX, startY, width, height, z1, z2);
else if(arc.isSelected())
g.drawArc(startX, startY, width, height, z1, z2);
}//else
}//paint( )
} //DrCanvas
public static void main(String[] args) {
new GraphicTest();
}//main( )
}
YASU.exe
