基本上,我该如何生成这个?我很确定这是GridBagLayout
的工作,但我无法理解如何正确调整'动作窗格'与'菜单栏'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。我试图弄清楚weightx
中的weighty
,gridheight
,gridwidth
,GridBagConstraints
值,但我无法在此实现目标。
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。
这是我最近的尝试,尝试使用3x6网格(c是GridBagConstraints对象,characterPortraits包含所有肖像,currentScreen是'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,这会在其象限的底部三分之一处生成每个肖像,而动作窗格占据中心列的5/6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。
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,但我真的只是想了解一下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。答案 0 :(得分:5)
尽管如此,在最奇怪的位置上添加你的JMenuBar
似乎很奇怪。虽然你能做什么,但要克服你在这一行中提到的困难
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.
是在此位置添加一个JPanel
,并将ActionPane
和JmenuBar
添加到此JPanel
,以获得所需的结果。所以我在这个位置添加了centerPanel
来演示如何实现这一目标。
我希望这个输出是你想要的:
以下是负责此输出的代码:
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();
}
});
}
}
答案 1 :(得分:4)
我从未成为GridBagLayout的忠实粉丝。很难做到 - 每个组件最多可以有11个约束 - 很难维护,重用相同的约束对象会导致意想不到的后果。
相反,我更喜欢嵌套各种类型的布局。对我来说,你显然有:
BorderLayout
,West
,Center
和East
小组West
面板中,您有GridLayout
- 2行,1列(肖像1和2)。East
面板中,您有GridLayout
- 2行,1列(肖像3和4)。Center
面板中,您有另一个BorderLayout
,其中包含Center
组件(操作窗格)和South
组件(菜单栏)。唯一的限制是West面板和East面板没有逻辑连接。如果肖像1,2,3和4都具有相同的尺寸,那不是问题。如果它们的尺寸不同,您可能会发现西部和东部的面板形状不同。