Java -практика использования

       

Кнопка с рисунком



Листинг 10.7. Кнопка с рисунком 

import j ava.awt.*;

import j ava.awt.event.*;

class FiowerButton extends Canvas implements MouseListener{ 



private boolean isDown=false; 

public FiowerButton(){

super();

setBackground(Color.lightGray);

addMouseListener(this);
 

}

public void drawFlower(Graphics g, int x, int y, int w, int h){ 

g.drawOvalfx + 2*w/5 - 6, y, w/5, w/5);

g.drawLine(x + w/2 - 6, у + w/5, x + w/2 - 6, у + h - 4);
 

g.drawOvalfx + 3*w/10 -6, у + h/3 - 4, w/5, w/5) ; 

g.drawOval(x + w/2 - б, у + h/3 - 4, w/5, w/5);

public void paint(Graphics g){

int w = getSizeO.width, h = getSize().height; 

if (isDown){

g.drawLine(0, 0, w - 1, 0) ; 

g.drawLined, 1, w - I, I);
 

g.drawLine(0, 0, 0, h - 1);
 

g.drawUne (1, 1, 1, h - 1);
 

drawFlower(g, 8, 10, w, h);
 

}

else

{

g.drawLine(0, h - 2, w - 2, h - 2);
 

g.drawLined, h - 1, w - I, h - I);
 

g.drawLinefw - 2, h - 2, w - 2, 0);
 

g.drawLinefw - 1, h - 1, w - 1, 1);
 

drawFlower (g, 6, 8, w, h) ; } }

public void mousePressed(MouseEvent e){ 

isDown=true; repaint();
}

public void mouseReleased(MouseEvent e){ 

isDown=false; repaint();
}

public void mouseEntered(MouseEvent e){} 

public void mouseExited(MouseEvent e) {} 

public void mouseClicked(MouseEvent e){) 

}

class DrawButton extends Frame{ 

DrawButton(String s) { 

super (s) ; 

setLayout(null);

Button b = new Button("OK");
 

b.setBounds(200, 50, 100, 60);
add(b);

FlowerButton d = new FlowerButton();
 

d.setBounds(50, 50, 100, 60);
add(d);

setSize(400, 150);
 

setVisible(true);

}

public static void main(String[] args){

Frame f= new DrawButton(" Кнопка с рисунком");
 

f.addWindowListener(new WindowAdapter()(

public void windowClosing(WindowEvent ev){

System.exit(0);
  

}

});
 

}



Содержание раздела