自动调整 Swing 组件的大小

Question

当我编译和运行我的程序时，我希望能够重新调整它的大小并使组件保持相同的比例因子。这意味着当框架展开时，组件也会展开，并保持原来的大小和间距比例。

import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.lang.*;

public class ResizeTst
{
JFrame myMainWindow = new JFrame("This is my title");

JPanel  firstPanel = new JPanel();

//Components
JButton CompAth = new JButton();
JButton ViewAth = new JButton();
JButton UpdateRD = new JButton();
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
String []fontFamilies = ge.getAvailableFontFamilyNames();
Font FontT5 = new Font("SansSerif", Font.BOLD, 50);
///////////

public void runGUI()
{
    myMainWindow.setBounds(10, 10, 1296, 756);
    myMainWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    myMainWindow.setLayout(new GridLayout(1,1));

    createFirstPanel();

    myMainWindow.getContentPane().add(firstPanel);

    myMainWindow.setVisible(true); 
}

public void createFirstPanel()
{
    firstPanel.setLayout(null);

    CompAth.setLocation(500,250);
    CompAth.setSize(320,300);
    CompAth.setText("<html><CENTER>Compare<br>Athletes</CENTER></html>");
    CompAth.setFont(FontT5);
    firstPanel.add(CompAth);

    ViewAth.setLocation(100,250);
    ViewAth.setSize(320,300);
    ViewAth.setText("<html><CENTER>View<br>Athletes</CENTER></html>");
    ViewAth.setFont(FontT5);
    firstPanel.add(ViewAth);

    UpdateRD.setLocation(900,250);
    UpdateRD.setSize(320,300);
    UpdateRD.setText("<html><CENTER>Update<br>Running<br>Details</CENTER></html>");
    UpdateRD.setFont(FontT5);
    firstPanel.add(UpdateRD);
}

public static void main(String[] args)
{
    ResizeTst rt = new ResizeTst();
    rt.runGUI();
}
}

因此，如果我实现此代码，它将允许我在任何系统上自动运行它的全尺寸，而组件的尺寸不会按比例因子更改为原来的尺寸。允许我的程序运行在全屏大屏幕或小屏幕上看起来不会很糟糕。

import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.lang.*;

public class ResizeTst
{
JFrame myMainWindow = new JFrame("This is my title");

JPanel  firstPanel = new JPanel();

//Components
JButton CompAth = new JButton();
JButton ViewAth = new JButton();
JButton UpdateRD = new JButton();
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
String []fontFamilies = ge.getAvailableFontFamilyNames();
Font FontT5 = new Font("SansSerif", Font.BOLD, 50);
///////////
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();

public void runGUI()
{
    myMainWindow.setExtendedState(JFrame.MAXIMIZED_BOTH);
    myMainWindow.setSize(screenSize);
    myMainWindow.setVisible(true);    
    myMainWindow.setResizable(true);
    myMainWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    myMainWindow.setLayout(new GridLayout(1,1));

    createFirstPanel();

    myMainWindow.getContentPane().add(firstPanel);

    myMainWindow.setVisible(true); 
}

有人告诉我应该在面板上使用允许我执行此操作的布局，但我不知道要使用哪种布局以及如何将其正确应用到该程序。任何有关如何执行此操作的解决方案或建议将不胜感激。

Answer 1

从这些方面着手。它使用 GridLayout 将组件拉伸到合适的大小。使用 setMargin(Insets) 将按钮做得更大一些。为截图缩小了字号，所有数字调整到需要。

import javax.swing.*;
import java.awt.*;
import javax.swing.border.EmptyBorder;

public class ResizeTst {

    JFrame myMainWindow = new JFrame("This is my title");
    JPanel firstPanel = new JPanel();

//Components
    JButton compAth = new JButton();
    JButton viewAth = new JButton();
    JButton updateRD = new JButton();
    GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
    String[] fontFamilies = ge.getAvailableFontFamilyNames();
    Font fontT5 = new Font(Font.SANS_SERIF, Font.BOLD, 25);
///////////

    public void runGUI() {
        myMainWindow.setBounds(10, 10, 1296, 756); // don't guess the size (1)
        myMainWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        myMainWindow.setLayout(new GridLayout(1, 1));
        createFirstPanel();
        myMainWindow.getContentPane().add(firstPanel);
        myMainWindow.pack(); // 1) Make it mininum size needed
        myMainWindow.setMinimumSize(myMainWindow.getSize());
        myMainWindow.setVisible(true);
    }

    public void createFirstPanel() {
        //firstPanel.setLayout(null);
        firstPanel.setLayout(new GridLayout(1,0,50,50));
        firstPanel.setBorder(new EmptyBorder(50,50,50,50));
        Insets buttonMargin = new Insets(20, 20, 20, 20);

        compAth.setText("<html><CENTER>Compare<br>Athletes</CENTER></html>");
        compAth.setMargin(buttonMargin);
        compAth.setFont(fontT5);
        firstPanel.add(compAth);

        viewAth.setMargin(buttonMargin);
        viewAth.setText("<html><CENTER>View<br>Athletes</CENTER></html>");
        viewAth.setFont(fontT5);
        firstPanel.add(viewAth);

        updateRD.setMargin(buttonMargin);
        updateRD.setText("<html><CENTER>Update<br>Running<br>Details</CENTER></html>");
        updateRD.setFont(fontT5);
        firstPanel.add(updateRD);
    }

    public static void main(String[] args) {
        // should be on the EDT!
        ResizeTst rt = new ResizeTst();
        rt.runGUI();
    }
}

自动调整 Swing 组件的大小

Automatic resizing of Swing components

java

swing

layout-manager