设置使用摆动选择的文本颜色 [英] Set a selected text color using Swing
本文介绍了设置使用摆动选择的文本颜色的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我要显示与用户选择的文本此处选择color.My问题是,我不得不选择一些文本,并点击settextcolor它被应用到所有的文本没有选择text.Please给我..
这里是我的code:
I want to display a selected text with user selected color.My problem here is I had select some text and click on settextcolor it was applied to all the text not selected text.Please give me.. Here is my code:
public class SetTextColor extends javax.swing.JFrame {
int i=0;
JTextPane textPane;
JScrollPane scrollPane;
public SetTextColor() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
tabbedPane = new javax.swing.JTabbedPane();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
Create = new javax.swing.JMenuItem();
SetTextColor = new javax.swing.JMenuItem();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jMenu1.setText("File");
Create.setText("Create");
Create.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
CreateActionPerformed(evt);
}
});
jMenu1.add(Create);
SetTextColor.setText("SetTextColor");
SetTextColor.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
SetTextColorActionPerformed(evt);
}
});
jMenu1.add(SetTextColor);
jMenuBar1.add(jMenu1);
setJMenuBar(jMenuBar1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(tabbedPane, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(tabbedPane, javax.swing.GroupLayout.DEFAULT_SIZE, 298, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
private void CreateActionPerformed(java.awt.event.ActionEvent evt) {
final JInternalFrame internalFrame = new JInternalFrame("");
i++;
internalFrame.setName("Document"+i);
internalFrame.setClosable(true);
internalFrame.setAutoscrolls(true);
textPane=new JTextPane();
textPane.setFont(new java.awt.Font("Miriam Fixed", 0, 13));
scrollPane=new JScrollPane(textPane);
internalFrame.add(scrollPane);
tabbedPane.add(internalFrame);
internalFrame.setSize(internalFrame.getMaximumSize());
internalFrame.pack();
internalFrame.setVisible(true);
}
private void SetTextColorActionPerformed(java.awt.event.ActionEvent evt) {
Color color = JColorChooser.showDialog(this, "Colors",Color.BLUE);
StyledDocument doc = textPane.getStyledDocument();
String text=textPane.getSelectedText();
Style style = textPane.addStyle("I'm a Style", null);
StyleConstants.setForeground(style, color);
textPane.setForeground(color);
}
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(SetTextColor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(SetTextColor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(SetTextColor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(SetTextColor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new SetTextColor().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JMenuItem Create;
private javax.swing.JMenuItem SetTextColor;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JTabbedPane tabbedPane;
// End of variables declaration
}
推荐答案
这可能的默认行为插入符号
,这将隐藏选择当文本组件失去焦点
This likely the default behaviour of the Caret
, which will hide the selection when the text component loses focus.
您可以通过创建一个自定义的插入符号
并重写 isSelectionVisible
方法总是返回<$ C $更改此C>真正
You can change this by creating a custom Caret
and overriding the isSelectionVisible
method to always return true
例如...
DefaultCaret caret = new DefaultCaret() {
@Override
public boolean isSelectionVisible() {
return true;
}
};
... Runnable的例子...
...Runnable example...
import java.awt.Color;
import javax.swing.JColorChooser;
import javax.swing.JInternalFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.text.DefaultCaret;
public class SetTextColor extends javax.swing.JFrame {
int i = 0;
JTextArea textArea;
JScrollPane scrollPane;
public SetTextColor() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
tabbedPane = new javax.swing.JTabbedPane();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
Create = new javax.swing.JMenuItem();
SetTextColor = new javax.swing.JMenuItem();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jMenu1.setText("File");
Create.setText("Create");
Create.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
CreateActionPerformed(evt);
}
});
jMenu1.add(Create);
SetTextColor.setText("SetTextColor");
SetTextColor.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
SetTextColorActionPerformed(evt);
}
});
jMenu1.add(SetTextColor);
jMenuBar1.add(jMenu1);
setJMenuBar(jMenuBar1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(tabbedPane, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(tabbedPane, javax.swing.GroupLayout.DEFAULT_SIZE, 298, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
private void CreateActionPerformed(java.awt.event.ActionEvent evt) {
final JInternalFrame internalFrame = new JInternalFrame("");
i++;
internalFrame.setName("Document" + i);
internalFrame.setClosable(true);
internalFrame.setAutoscrolls(true);
textArea = new JTextArea();
DefaultCaret caret = new DefaultCaret() {
@Override
public boolean isSelectionVisible() {
return true;
}
};
textArea.setCaret(caret);
textArea.setFont(new java.awt.Font("Miriam Fixed", 0, 13));
scrollPane = new JScrollPane(textArea);
internalFrame.add(scrollPane);
tabbedPane.add(internalFrame);
internalFrame.setSize(internalFrame.getMaximumSize());
internalFrame.pack();
internalFrame.setVisible(true);
}
private void SetTextColorActionPerformed(java.awt.event.ActionEvent evt) {
Color color = JColorChooser.showDialog(this, "Colors", Color.BLUE);
// textArea.setBackground(color);
textArea.setSelectedTextColor(color);
}
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(SetTextColor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(SetTextColor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(SetTextColor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(SetTextColor.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new SetTextColor().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JMenuItem Create;
private javax.swing.JMenuItem SetTextColor;
private javax.swing.JMenu jMenu1;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JTabbedPane tabbedPane;
// End of variables declaration
}
这篇关于设置使用摆动选择的文本颜色的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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