如何使左或右的GridBagLayout单元里面？ [英] How to align left or right inside GridBagLayout cell?
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问题描述
我看到的GridBagLayout 位置是儿童细胞内的中心对齐。如何对齐左边还是右边？
更新
构建code（我知道我可以重复使用 C ）
//按键面板
JPanel的button_panel =新的JPanel（）;
button_panel.add（ok_button）;
button_panel.add（cancel_button）;
//将控件对话框
的GridBagConstraints℃;
GridBagLayout的布局=新的GridBagLayout（）;
的setLayout（布局）;
C =新的GridBagConstraints（）;
c.gridx = 0;
c.gridy = 0;
加（inputSource_label，C）;
C =新的GridBagConstraints（）;
c.gridx = 1;
c.gridy = 0;
加（inputSource_combo，C）;
C =新的GridBagConstraints（）;
c.gridx = 0;
c.gridy = 1;
加（output_label，C）;
C =新的GridBagConstraints（）;
c.gridx = 1;
c.gridy = 1;
加（output_combo，C）;
C =新的GridBagConstraints（）;
c.gridx = 0;
c.gridy = 2;
c.gridwidth = 2;
加（button_panel，C）;
解决方案
在使用的GridBagLayout JLabel的一个表格显示：JTextField中，我希望有一种方法，使我的GridBagConstraints我根据对x，y位置。例如像这样：
私人的GridBagConstraints createGbc（INT X，int y）对{
GridBagConstraints的GBC =新的GridBagConstraints（）;
gbc.gridx = X;
gbc.gridy = Y;
gbc.gridwidth = 1;
gbc.gridheight = 1;
gbc.anchor =（X == 0）？ GridBagConstraints.WEST：GridBagConstraints.EAST;
gbc.fill =（X == 0）？ GridBagConstraints.BOTH
：GridBagConstraints.HORIZONTAL;
gbc.insets =（X == 0）？ WEST_INSETS：EAST_INSETS;
gbc.weightx =（X == 0）？ 0.1：1.0;
gbc.weighty = 1.0;
返回GBC;
}
下面code使一个图形用户界面，如下所示：
进口java.awt.GridBagConstraints中;
进口java.awt.GridBagLayout中;
进口java.awt.Insets中;
进口的java.util.HashMap;
进口的java.util.Map;
进口的javax.swing *。
公共类GridBagEg {
私有静态无效createAndShowGui（）{
PlayerEditorPanel playerEditorPane =新PlayerEditorPanel（）;
INT结果= JOptionPane.showConfirmDialog（空，playerEditorPane，
编辑播放器，JOptionPane.OK_CANCEL_OPTION，
JOptionPane.PLAIN_MESSAGE）;
如果（结果== JOptionPane.OK_OPTION）{
// TODO：做一些与信息
对于（PlayerEditorPanel.FieldTitle fieldTitle：
PlayerEditorPanel.FieldTitle.values（））{
System.out.printf（％10秒：％S％N，fieldTitle.getTitle（）
playerEditorPane.getFieldText（fieldTitle））;
}
}
}
公共静态无效的主要（字串[] args）{
SwingUtilities.invokeLater（新的Runnable（）{
公共无效的run（）{
createAndShowGui（）;
}
}）;
}
}
@燮pressWarnings（串行）
类PlayerEditorPanel继承JPanel {
枚举FieldTitle {
名称（名称），速度（速度），力量（力量）;
私人字符串名称;
私人FieldTitle（字符串名称）{
this.title =称号;
}
公共字符串的getTitle（）{
返回称号;
}
};
私有静态最后插图WEST_INSETS =新的插图（5,0，5,5）;
私有静态最后插图EAST_INSETS =新的插图（5,5，5，0）;
私人地图＆LT; FieldTitle，JTextField的＆GT; fieldMap =新的HashMap＆LT; FieldTitle，JTextField的＆GT;（）;
公共PlayerEditorPanel（）{
的setLayout（新的GridBagLayout（））;
setBorder（BorderFactory.createCompoundBorder（
BorderFactory.createTitledBorder（玩家编辑器），
BorderFactory.createEmptyBorder（5,5，5,5）））;
GridBagConstraints的GBC;
的for（int i = 0; I＆LT; FieldTitle.values（）的长度;我++）{
FieldTitle fieldTitle = FieldTitle.values（）[我]
GBC = createGbc（0，I）;
添加（新的JLabel（fieldTitle.getTitle（）+：，JLabel.LEFT），GBC）;
GBC = createGbc（1，I）;
的JTextField textField的=新的JTextField（10）;
加（textField的，GBC）;
fieldMap.put（fieldTitle，textfield的情况）;
}
}
私人GridBagConstraints的createGbc（INT X，int y）对{
GridBagConstraints的GBC =新的GridBagConstraints（）;
gbc.gridx = X;
gbc.gridy = Y;
gbc.gridwidth = 1;
gbc.gridheight = 1;
gbc.anchor =（X == 0）？ GridBagConstraints.WEST：GridBagConstraints.EAST;
gbc.fill =（X == 0）？ GridBagConstraints.BOTH
：GridBagConstraints.HORIZONTAL;
gbc.insets =（X == 0）？ WEST_INSETS：EAST_INSETS;
gbc.weightx =（X == 0）？ 0.1：1.0;
gbc.weighty = 1.0;
返回GBC;
}
公共字符串getFieldText（FieldTitle fieldTitle）{
返回fieldMap.get（fieldTitle）.getText（）;
}
}
在这个例子中，我显示的JPanel中的JOptionPane，但它可以很容易地显示在一个JFrame或JApplet的或JDialog的，或...
I see that GridBagLayout positions it's children with center alignment within cells. How to align left or right?
UPDATE
Constructing code (I know I could reuse c)
// button panel
JPanel button_panel = new JPanel();
button_panel.add(ok_button);
button_panel.add(cancel_button);
// placing controls to dialog
GridBagConstraints c;
GridBagLayout layout = new GridBagLayout();
setLayout(layout);
c = new GridBagConstraints();
c.gridx = 0;
c.gridy = 0;
add(inputSource_label, c);
c = new GridBagConstraints();
c.gridx = 1;
c.gridy = 0;
add(inputSource_combo, c);
c = new GridBagConstraints();
c.gridx = 0;
c.gridy = 1;
add(output_label, c);
c = new GridBagConstraints();
c.gridx = 1;
c.gridy = 1;
add(output_combo, c);
c = new GridBagConstraints();
c.gridx = 0;
c.gridy = 2;
c.gridwidth = 2;
add(button_panel, c);
解决方案
When using GridBagLayout for a tabular display of JLabel : JTextField, I like to have a method that makes my GridBagConstraints for me based on the x, y position. For example something like so:
private GridBagConstraints createGbc(int x, int y) {
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = x;
gbc.gridy = y;
gbc.gridwidth = 1;
gbc.gridheight = 1;
gbc.anchor = (x == 0) ? GridBagConstraints.WEST : GridBagConstraints.EAST;
gbc.fill = (x == 0) ? GridBagConstraints.BOTH
: GridBagConstraints.HORIZONTAL;
gbc.insets = (x == 0) ? WEST_INSETS : EAST_INSETS;
gbc.weightx = (x == 0) ? 0.1 : 1.0;
gbc.weighty = 1.0;
return gbc;
}
The following code makes a GUI that looks like this:
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.util.HashMap;
import java.util.Map;
import javax.swing.*;
public class GridBagEg {
private static void createAndShowGui() {
PlayerEditorPanel playerEditorPane = new PlayerEditorPanel();
int result = JOptionPane.showConfirmDialog(null, playerEditorPane,
"Edit Player", JOptionPane.OK_CANCEL_OPTION,
JOptionPane.PLAIN_MESSAGE);
if (result == JOptionPane.OK_OPTION) {
// TODO: do something with info
for (PlayerEditorPanel.FieldTitle fieldTitle :
PlayerEditorPanel.FieldTitle.values()) {
System.out.printf("%10s: %s%n", fieldTitle.getTitle(),
playerEditorPane.getFieldText(fieldTitle));
}
}
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGui();
}
});
}
}
@SuppressWarnings("serial")
class PlayerEditorPanel extends JPanel {
enum FieldTitle {
NAME("Name"), SPEED("Speed"), STRENGTH("Strength");
private String title;
private FieldTitle(String title) {
this.title = title;
}
public String getTitle() {
return title;
}
};
private static final Insets WEST_INSETS = new Insets(5, 0, 5, 5);
private static final Insets EAST_INSETS = new Insets(5, 5, 5, 0);
private Map<FieldTitle, JTextField> fieldMap = new HashMap<FieldTitle, JTextField>();
public PlayerEditorPanel() {
setLayout(new GridBagLayout());
setBorder(BorderFactory.createCompoundBorder(
BorderFactory.createTitledBorder("Player Editor"),
BorderFactory.createEmptyBorder(5, 5, 5, 5)));
GridBagConstraints gbc;
for (int i = 0; i < FieldTitle.values().length; i++) {
FieldTitle fieldTitle = FieldTitle.values()[i];
gbc = createGbc(0, i);
add(new JLabel(fieldTitle.getTitle() + ":", JLabel.LEFT), gbc);
gbc = createGbc(1, i);
JTextField textField = new JTextField(10);
add(textField, gbc);
fieldMap.put(fieldTitle, textField);
}
}
private GridBagConstraints createGbc(int x, int y) {
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = x;
gbc.gridy = y;
gbc.gridwidth = 1;
gbc.gridheight = 1;
gbc.anchor = (x == 0) ? GridBagConstraints.WEST : GridBagConstraints.EAST;
gbc.fill = (x == 0) ? GridBagConstraints.BOTH
: GridBagConstraints.HORIZONTAL;
gbc.insets = (x == 0) ? WEST_INSETS : EAST_INSETS;
gbc.weightx = (x == 0) ? 0.1 : 1.0;
gbc.weighty = 1.0;
return gbc;
}
public String getFieldText(FieldTitle fieldTitle) {
return fieldMap.get(fieldTitle).getText();
}
}
In this example, I display the JPanel in a JOptionPane, but it could just as easily be displayed in a JFrame or JApplet or JDialog or ...
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