Java 将JLabel溢出到另一个JLabel中
假设我有一个Java 将JLabel溢出到另一个JLabel中,java,swing,jlabel,Java,Swing,Jlabel,假设我有一个JLabel大小20x20。现在让我们假设我添加了字符串“敏捷的棕色狐狸跳过了懒狗”。这句话对于JLabel来说太长了,所以它被替换为…。有没有办法让它溢出到另一个JLabel,这样第一个JLabel会有“敏捷的棕色狐狸”,第二个JLabel会有“跳过懒狗” 生成一个标签,上面写着“…”如果您提供更多信息,回答起来会更容易 我假设您想要的是两个标签,可以并排放置,或者在任何其他布局中。如果第一个标签的文本溢出,第二个标签将显示剩余的文本 这里有一个解决方案: import java
JLabel
大小20x20
。现在让我们假设我添加了字符串“敏捷的棕色狐狸跳过了懒狗”。这句话对于JLabel
来说太长了,所以它被替换为…
。有没有办法让它溢出到另一个JLabel
,这样第一个JLabel
会有“敏捷的棕色狐狸”,第二个JLabel
会有“跳过懒狗”
生成一个标签,上面写着“…”如果您提供更多信息,回答起来会更容易 我假设您想要的是两个标签,可以并排放置,或者在任何其他布局中。如果第一个标签的文本溢出,第二个标签将显示剩余的文本 这里有一个解决方案:
import java.awt.*;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.RenderingHints;
import java.awt.event.*;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.lang.Override;
import javax.swing.*;
import javax.swing.JLabel;
import javax.swing.JSplitPane;
import javax.swing.SwingUtilities;
public class Test extends JFrame {
public Test() {
super("Test overflowing label");
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setLocation(200, 200);
setSize(300, 200);
createUI();
}
private void createUI() {
JLabel label2 = new JLabel();
JLabel label1 = new OverflowingLabel("text to truncate since it's too long ...", label2);
final JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, label1, label2);
splitPane.setDividerSize(2);
addWindowListener(new WindowAdapter() {
@Override
public void windowOpened(WindowEvent e) {
splitPane.setDividerLocation(.5d);
}
});
setContentPane(splitPane);
}
public static void main(String... args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
Test test = new Test();
test.setVisible(true);
}
});
}
private class OverflowingLabel extends JLabel {
private JLabel[] dependantLabels;
public OverflowingLabel(String text, JLabel... dependantLabels) {
super(text);
this.dependantLabels = dependantLabels;
addComponentListener(new ComponentAdapter() {
@Override
public void componentShown(ComponentEvent e) {
overflowText();
}
@Override
public void componentResized(ComponentEvent e) {
overflowText();
}
});
}
private void overflowText() {
int index = getIndexToChopText();
String text = getText().substring(index);
for (JLabel dependantLabel : dependantLabels)
dependantLabel.setText(text);
}
private int getIndexToChopText() {
Dimension size = getSize();
FontMetrics metrics = getFontMetrics(getFont());
String text = getText();
int index = 0;
int width = 0;
while ((index < text.length()) && (width < size.width)) {
int charWidth = metrics.charWidth(text.charAt(index));
if ((width + charWidth) > size.width)
break;
index ++;
width += charWidth;
}
return index;
}
@Override
public Dimension getMinimumSize() {
Dimension size = super.getMinimumSize();
return new Dimension(0, size.height);
}
@Override
protected void paintComponent(Graphics g) {
Graphics2D g2d = (Graphics2D)g.create();
Rectangle clip = g2d.getClipBounds();
g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
g2d.setColor(getBackground());
g2d.fillRect(clip.x, clip.y, clip.width, clip.height);
g2d.setColor(getForeground());
g2d.setFont(getFont());
FontMetrics metrics = g2d.getFontMetrics();
int baseLine = metrics.getAscent() + metrics.getLeading();
int index = getIndexToChopText();
g2d.drawString(getText().substring(0, index), 0, (getHeight() + baseLine) / 2 - 1);
g2d.dispose();
}
}
}
import java.awt.*;
导入java.awt.Dimension;
导入java.awt.Graphics;
导入java.awt.RenderingHints;
导入java.awt.event.*;
导入java.awt.event.ComponentAdapter;
导入java.awt.event.ComponentEvent;
导入java.awt.event.WindowAdapter;
导入java.awt.event.WindowEvent;
导入java.lang.Override;
导入javax.swing.*;
导入javax.swing.JLabel;
导入javax.swing.JSplitPane;
导入javax.swing.SwingUtilities;
公共类测试扩展了JFrame{
公开考试(){
超级(“测试溢出标签”);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
设置位置(200200);
设置大小(300200);
createUI();
}
私有void createUI(){
JLabel label2=新的JLabel();
JLabel label1=新的OverflowLabel(“由于太长而要截断的文本…”,label2);
最终JSplitPane拆分窗格=新的JSplitPane(JSplitPane.HORIZONTAL_SPLIT,label1,label2);
splitPane.setDividerSize(2);
addWindowListener(新的WindowAdapter(){
@凌驾
公共无效窗口已打开(WindowEvent e){
splitPane.setDividerLocation(.5d);
}
});
setContentPane(拆分窗格);
}
公共静态void main(字符串…参数){
SwingUtilities.invokeLater(新的Runnable(){
@凌驾
公开募捐{
测试=新测试();
test.setVisible(真);
}
});
}
私有类溢出标签扩展JLabel{
私人JLabel标签;
公共溢出标签(字符串文本、JLabel…标签){
超级(文本);
this.dependent标签=dependent标签;
addComponentListener(新的ComponentAdapter(){
@凌驾
显示的公共无效组件(组件事件e){
溢出文本();
}
@凌驾
公共无效组件已恢复(组件事件e){
溢出文本();
}
});
}
私有无效溢出文本(){
int index=getIndexToChopText();
字符串text=getText().substring(索引);
用于(JLabel Dependent标签:Dependent标签)
dependentiallabel.setText(文本);
}
private int getIndexToChopText(){
维度大小=getSize();
FontMetrics=getFontMetrics(getFont());
String text=getText();
int指数=0;
整数宽度=0;
而((索引大小宽度)
打破
索引++;
宽度+=字符宽度;
}
收益指数;
}
@凌驾
公共维度getMinimumSize(){
维度大小=super.getMinimumSize();
返回新尺寸(0,尺寸.高度);
}
@凌驾
受保护组件(图形g){
Graphics2D g2d=(Graphics2D)g.create();
矩形剪辑=g2d.getClipBounds();
g2d.setRenderingHint(RenderingHints.KEY\u TEXT\u抗锯齿,
RenderingHints.VALUE\u TEXT\u ANTIALIAS\u LCD\u HRGB);
setColor(getBackground());
g2d.fillRect(clip.x,clip.y,clip.width,clip.height);
setColor(get前台());
g2d.setFont(getFont());
FontMetrics=g2d.getFontMetrics();
int baseLine=metrics.getAscent()+metrics.getLeading();
int index=getIndexToChopText();
g2d.drawString(getText().子字符串(0,索引),0,(getHeight()+基线)/2-1);
g2d.dispose();
}
}
}
以下是一些屏幕截图来演示该行为:
您可以使用带有
标记的HTML创建多行JLabel。我知道这一点,但假设我在窗口的一侧有一个标签,另一侧有一个标签。此功能类似于Word或Pages功能,自动溢出第一个标签页面/表单另一侧的第二个标签,该标签将显示第一个标签溢出的文本?我试着想象,但不能。你能想出一些ASCII艺术,或者展示一个演示这个问题的例子吗?还有,你为什么要在标签上设置一个最大尺寸?也许如果有更好的方法避免这样做,那么最初的问题也会消失。正如我在上面所说(在一个朋友关闭我的计算机之前),文字处理器有一个功能,可以让你链接文本字段,这样,如果你在一个框中键入太多文本,它会自动将它发送到另一个框中。请看这里:
import java.awt.*;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.RenderingHints;
import java.awt.event.*;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.lang.Override;
import javax.swing.*;
import javax.swing.JLabel;
import javax.swing.JSplitPane;
import javax.swing.SwingUtilities;
public class Test extends JFrame {
public Test() {
super("Test overflowing label");
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
setLocation(200, 200);
setSize(300, 200);
createUI();
}
private void createUI() {
JLabel label2 = new JLabel();
JLabel label1 = new OverflowingLabel("text to truncate since it's too long ...", label2);
final JSplitPane splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, label1, label2);
splitPane.setDividerSize(2);
addWindowListener(new WindowAdapter() {
@Override
public void windowOpened(WindowEvent e) {
splitPane.setDividerLocation(.5d);
}
});
setContentPane(splitPane);
}
public static void main(String... args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
Test test = new Test();
test.setVisible(true);
}
});
}
private class OverflowingLabel extends JLabel {
private JLabel[] dependantLabels;
public OverflowingLabel(String text, JLabel... dependantLabels) {
super(text);
this.dependantLabels = dependantLabels;
addComponentListener(new ComponentAdapter() {
@Override
public void componentShown(ComponentEvent e) {
overflowText();
}
@Override
public void componentResized(ComponentEvent e) {
overflowText();
}
});
}
private void overflowText() {
int index = getIndexToChopText();
String text = getText().substring(index);
for (JLabel dependantLabel : dependantLabels)
dependantLabel.setText(text);
}
private int getIndexToChopText() {
Dimension size = getSize();
FontMetrics metrics = getFontMetrics(getFont());
String text = getText();
int index = 0;
int width = 0;
while ((index < text.length()) && (width < size.width)) {
int charWidth = metrics.charWidth(text.charAt(index));
if ((width + charWidth) > size.width)
break;
index ++;
width += charWidth;
}
return index;
}
@Override
public Dimension getMinimumSize() {
Dimension size = super.getMinimumSize();
return new Dimension(0, size.height);
}
@Override
protected void paintComponent(Graphics g) {
Graphics2D g2d = (Graphics2D)g.create();
Rectangle clip = g2d.getClipBounds();
g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
g2d.setColor(getBackground());
g2d.fillRect(clip.x, clip.y, clip.width, clip.height);
g2d.setColor(getForeground());
g2d.setFont(getFont());
FontMetrics metrics = g2d.getFontMetrics();
int baseLine = metrics.getAscent() + metrics.getLeading();
int index = getIndexToChopText();
g2d.drawString(getText().substring(0, index), 0, (getHeight() + baseLine) / 2 - 1);
g2d.dispose();
}
}
}