如何在Java（Swing）中使用GridBayLayout在我的框架中生成此特定图像？ [英] How do I use GridBayLayout in Java (Swing) to generate this particular image in my frame?
问题描述
基本上，如何我生成这个？我很确定这是 GridBagLayout 的工作，但我无法理解如何正确调整'Action Pane'与'Menubar'的大小。红色&黑色线条表示我认为你将在这种情况下使用的网格（3x3），但我可能完全错误，可能有一种方法可以在不同的配置中使用它。我试图弄乱 weightx ，重量， gridheight ， gridwidth GridBagConstraints 中的值，但我无法在此实现目标。
Basically, how do I generate this? I'm pretty sure this is a job for GridBagLayout, but I'm unable to wrap my head around how to properly size the 'Action Pane' versus the 'Menubar'. The red & black lines indicate the grid that I believe you are to use in this case (3x3), but I might be completely wrong and there could be a way to do it in a different configuration. I tried to mess around with the weightx, weighty, gridheight, gridwidth values in GridBagConstraints, but I can't achieve my goals here.
请注意，第二条红线应该恰好是框架下半部分高度的三分之一。
Note that the second red line is supposed to be exactly one-third of the height of the bottom half of the frame.
这是我的最新尝试，尝试使用3x6网格（c是GridBagConstraints对象，characterPortraits包含所有肖像，currentScreen是'动作窗格'）：
This is my latest attempt, by trying to use a 3x6 grid (c is the GridBagConstraints object, characterPortraits contain all the portraits, and currentScreen is the 'Action Pane') :
c.fill = GridBagConstraints.BOTH;
c.weightx = 0.25;
c.weighty = (1/6);
c.gridx = 0;
c.gridy = 0;
c.gridheight = 3;
pane.add(characterPortraits.get(0), c);
c.gridx = 2;
pane.add(characterPortraits.get(1), c);
c.gridx = 0;
c.gridy = 3;
c.gridheight = 3;
pane.add(characterPortraits.get(2), c);
c.gridx = 2;
pane.add(characterPortraits.get(3), c);
//c.fill = GridBagConstraints.NONE;
c.weightx = 1.0;
c.weighty = 1.0;
c.gridx = 1;
c.gridy = 0;
c.gridheight = 3;
pane.add(currentScreen, c);
相反，这会产生其象限底部三分之一的每幅肖像，而行动窗格则为5 / 6个中心列而不是4/6，就像我想要的那样。任何想法都会有所帮助谢谢！ -B。
Instead, this produces each portrait in the bottom third of its quadrant, and the Action Pane taking 5/6 of the center column instead of 4/6, like I want it to. Any ideas would help; thanks! -B.
编辑：我正在设计此应用程序以具有固定的窗口大小;人们可能会说这是糟糕的设计，但我真的只是想要了解Swing组件，并确保它们至少按照我希望的方式在固定窗口中运行。我想我可以允许最大限度地适当调整大小，但就是这样。
I'm designing this application to have a fixed window size; people may say this is bad design, but I'm really just trying to get a feel for Swing components and make sure they at least behave in a fixed window the way I want them to. I think I may allow for a maximize proper-resizing, but that's about it.
推荐答案
虽然，我觉得很奇怪你添加你的 JMenuBar ，在最奇怪的位置。虽然你可以做什么，但要克服你在这一行中提到的困难
Though, it appeared strange to me that you adding your JMenuBar, at the most weird of positions. Though what you can do, to overcome the difficulty mentioned by you in this line
Instead, this produces each portrait in the bottom third of its quadrant, and the
Action Pane taking 5/6 of the center column instead of 4/6, like I want it to.
是在这个位置添加一个 JPanel 并将 ActionPane 和 JmenuBar 添加到此添加的 JPanel 中，达到预期的结果。所以我在这个位置添加了 centerPanel 来演示如何实现这一点。
is to add one JPanel at this location and put your ActionPane and JmenuBar to this added JPanel, to achieve the desired outcome. So I had added centerPanel at this location to demonstrate, how this can be achieved.
我希望这个输出是你想要的是什么：
I hope this output is what you so desired :
以下是负责此输出的代码：
And here is the code responsible for this output :
import java.awt.*;
import javax.swing.*;
public class GridBagPanelLayout
{
private JPanel portrait1;
private JPanel portrait2;
private JPanel portrait3;
private JPanel portrait4;
private JPanel centerPanel;
private JPanel actionPane;
private void createAndDisplayGUI()
{
JFrame frame = new JFrame("GridBag JPanel Layout Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
/*
* This JPanel will serve as the
* Content Pane, for the JFrame.
*/
JPanel contentPane = new JPanel();
contentPane.setOpaque(true);
contentPane.setBackground(Color.WHITE);
contentPane.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.anchor = GridBagConstraints.FIRST_LINE_START;
gbc.fill = GridBagConstraints.BOTH;
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 0.33;
gbc.weighty = 0.5;
gbc.gridheight = 2;
portrait1 = new JPanel();
portrait1.setOpaque(true);
portrait1.setBackground(Color.BLUE);
portrait1.setBorder(
BorderFactory.createMatteBorder(
2, 2, 2, 2, Color.WHITE));
contentPane.add(portrait1, gbc);
gbc.gridx = 1;
gbc.gridy = 0;
gbc.weighty = 1.0;
gbc.gridheight = 4;
centerPanel = new JPanel();
centerPanel.setOpaque(true);
centerPanel.setBackground(Color.WHITE);
centerPanel.setLayout(new GridBagLayout());
GridBagConstraints constCenter = new GridBagConstraints();
constCenter.anchor = GridBagConstraints.FIRST_LINE_START;
constCenter.fill = GridBagConstraints.BOTH;
constCenter.gridx = 0;
constCenter.gridy = 0;
constCenter.weightx = 1.0;
constCenter.weighty = 0.975;
actionPane = new JPanel();
actionPane.setOpaque(true);
actionPane.setBackground(Color.MAGENTA);
actionPane.setBorder(
BorderFactory.createMatteBorder(
2, 2, 2, 2, Color.WHITE));
centerPanel.add(actionPane, constCenter);
constCenter.gridx = 0;
constCenter.gridy = 1;
constCenter.weighty = 0.025;
centerPanel.add(getMenuBar(), constCenter);
contentPane.add(centerPanel, gbc);
gbc.gridx = 2;
gbc.gridy = 0;
gbc.weighty = 0.5;
gbc.gridheight = 2;
portrait3 = new JPanel();
portrait3.setOpaque(true);
portrait3.setBackground(Color.BLUE);
portrait3.setBorder(
BorderFactory.createMatteBorder(
2, 2, 2, 2, Color.WHITE));
contentPane.add(portrait3, gbc);
gbc.gridx = 0;
gbc.gridy = 2;
//gbc.weighty = 0.5;
//gbc.gridheight = 2;
portrait2 = new JPanel();
portrait2.setOpaque(true);
portrait2.setBackground(Color.BLUE);
portrait2.setBorder(
BorderFactory.createMatteBorder(
2, 2, 2, 2, Color.WHITE));
contentPane.add(portrait2, gbc);
gbc.gridx = 2;
gbc.gridy = 2;
gbc.weighty = 0.5;
gbc.gridheight = 2;
portrait4 = new JPanel();
portrait4.setOpaque(true);
portrait4.setBackground(Color.BLUE);
portrait4.setBorder(
BorderFactory.createMatteBorder(
2, 2, 2, 2, Color.WHITE));
contentPane.add(portrait4, gbc);
frame.setContentPane(contentPane);
frame.setSize(500, 300);
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
private JMenuBar getMenuBar()
{
JMenuBar menuBar = new JMenuBar();
JMenu fileMenu = new JMenu("File");
fileMenu.setOpaque(true);
fileMenu.setBackground(Color.BLACK);
fileMenu.setForeground(Color.WHITE);
JMenuItem newItem = new JMenuItem("NEW");
JMenuItem openItem = new JMenuItem("OPEN");
fileMenu.add(newItem);
fileMenu.add(openItem);
JMenu editMenu = new JMenu("Edit");
editMenu.setOpaque(true);
editMenu.setBackground(Color.BLACK);
editMenu.setForeground(Color.WHITE);
JMenuItem redoItem = new JMenuItem("Redo");
JMenuItem undoItem = new JMenuItem("Undo");
editMenu.add(redoItem);
editMenu.add(undoItem);
JMenu viewMenu = new JMenu("View");
viewMenu.setOpaque(true);
viewMenu.setBackground(Color.BLACK);
viewMenu.setForeground(Color.WHITE);
JMenuItem zInItem = new JMenuItem("Zoom In");
JMenuItem zOutItem = new JMenuItem("Zoom Out");
viewMenu.add(zInItem);
viewMenu.add(zOutItem);
menuBar.add(fileMenu);
menuBar.add(editMenu);
menuBar.add(viewMenu);
menuBar.setOpaque(true);
menuBar.setBackground(Color.BLACK);
return menuBar;
}
public static void main(String... args)
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
new GridBagPanelLayout().createAndDisplayGUI();
}
});
}
}
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