标签:bar java Color menu 编程 add var new toolbar
简介
toolbar
code
/*
* @Author: your name
* @Date: 2020-11-08 09:38:15
* @LastEditTime: 2020-11-08 10:10:19
* @LastEditors: Please set LastEditors
* @Description: In User Settings Edit
* @FilePath: /java/calcu/ToolbarFrame.java
*/
package calcu;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
/**
* A frame with a toolbar and menu for color changes.
*/
public class ToolBarFrame extends JFrame
{
private static final int DEFAULT_WIDTH = 300;
private static final int DEFAULT_HEIGHT = 200;
private JPanel panel;
public ToolBarFrame()
{
setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
// add a panel for color change
panel = new JPanel();
add(panel, BorderLayout.CENTER);
// set up actions
var blueAction = new ColorAction("Blue", new ImageIcon("blue-ball.gif"), Color.BLUE);
var yellowAction = new ColorAction("Yellow", new ImageIcon("yellow-ball.gif"),
Color.YELLOW);
var redAction = new ColorAction("Red", new ImageIcon("red-ball.gif"), Color.RED);
var exitAction = new AbstractAction("Exit", new ImageIcon("exit.gif"))
{
public void actionPerformed(ActionEvent event)
{
System.exit(0);
}
};
exitAction.putValue(Action.SHORT_DESCRIPTION, "Exit");
// populate toolbar
var bar = new JToolBar();
bar.add(blueAction);
bar.add(yellowAction);
bar.add(redAction);
bar.addSeparator();
bar.add(exitAction);
add(bar, BorderLayout.NORTH);
// populate menu
var menu = new JMenu("Color");
menu.add(yellowAction);
menu.add(blueAction);
menu.add(redAction);
menu.add(exitAction);
var menuBar = new JMenuBar();
menuBar.add(menu);
setJMenuBar(menuBar);
}
public static void main(String []args) {
EventQueue.invokeLater(() -> {
ToolBarFrame t = new ToolBarFrame();
t.setTitle("ImageTest");
t.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
t.setVisible(true);
});
}
/**
* The color action sets the background of the frame to a given color.
*/
class ColorAction extends AbstractAction
{
public ColorAction(String name, Icon icon, Color c)
{
putValue(Action.NAME, name);
putValue(Action.SMALL_ICON, icon);
putValue(Action.SHORT_DESCRIPTION, name + " background");
putValue("Color", c);
}
public void actionPerformed(ActionEvent event)
{
Color c = (Color) getValue("Color");
panel.setBackground(c);
}
}
}
TIPs
java uNRESOLVED COMPILATIon problem
导致的问题可能是,文件名和类名没有对应。
标签:bar,java,Color,menu,编程,add,var,new,toolbar 来源: https://www.cnblogs.com/eat-too-much/p/13943666.html
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