Java学习——107、圆、矩形
上篇中，帖了Choose类，此类中包含有一个Toppane的对象，即本篇所帖上来的。
之所以要把Toppane单出来成一个类，原因是如果将这所有代码都放在Chooser类中，我会觉得那个类里面代码太多，看起来好像不太友好。
3、Toppane类
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class Toppane implements ActionListener{
private JComboBox type;
private JRadioButton yes_fill;
private JButton color_button,back_button;
private Color c;
private Color backc;
private Tu_canvas vas;
public JComboBox init_type(){
String s[]={"圆","矩形"};
type=new JComboBox();
for(int i=0;i<s.length;i++){
type.addItem(s[i]);
}
type.addActionListener(this);
return type;
}
public JRadioButton init_fill(){
yes_fill=new JRadioButton("填充");
return yes_fill;
}
public JButton init_button(){
color_button=new JButton("前景色");
color_button.addActionListener(this);
returncolor_button;
}
public JButton init_backbutton(){
back_button=new JButton("背景色");
back_button.addActionListener(this);
returnback_button;
}
public Tu_canvas set_vas(Tu_canvas vas){
this.vas=vas;
return vas;
}
public Color get_backcolor(){
returnbackc;
}
public Color get_color(){
returnc;
}
publicint get_type(){
if(type.getSelectedIndex()==0)
return 0;
else if(type.getSelectedIndex()==1)
return 1;
else
return 1;
}
public int get_fill(){
if(yes_fill.isSelected()==true)
return 1;
else
return 0;
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generatedmethod stub
if(e.getSource()==color_button)
{
c=JColorChooser.showDialog(color_button,"颜色选择", Color.cyan);
vas.set_color(c);
}
if(e.getSource()==back_button){
backc=JColorChooser.showDialog(color_button,"颜色选择", Color.red);
vas.setBackground(backc);
vas.repaint();
}
vas.set_fill(this.get_fill());
vas.set_type(this.get_type());
vas.repaint();
}
}