自定义JTextField [英] Customizing JTextField
问题描述
我想知道如何自定义jtextfield的ui，这样我就可以创建圆角矩形边框，而文档不会超出边框。
I would like to know how to customize the ui of a jtextfield so I could create rounded rectangular border without the document going outside the border.
到目前为止，我认为我已经尝试了我能想到的大部分内容，我创建了一个新的FieldView类，并根据我自定义边框绘制圆形rects更改了paint方法中的形状，这是我设法摆脱白色的唯一方法textfield文档/视图是将它设置为不透明但我认为应该有另一种方法而不设置opaque值。
So far I think I have tried the most of what I can think of, I have created a new FieldView class and changed the shape in the paint method according to my customized border that draw rounded rects, the only way I sort of managed to get rid of the white textfield document/view was to set it opaque but I think there should be another way without setting the opaque value.
您是否有任何自定义jtextfield laf的经验请回信，我甚至没有运气阅读Core Swing高级书籍，如果您尝试使用google搜索，请让我知道搜索短语，因为我尝试过关键字，如造型，定制，ui，plaf，laf等等。
Have You any experience in customizing the laf of a jtextfield please write back, I have even read the Core Swing advanced book without luck and if you try searching with google please let me know the search phrase as I have tried with keywords like "styling","customizing","ui","plaf","laf" and what not.
我真诚地希望你能给我一个正确方向的推动，我希望没有人会为此做出一个火焰战争，我真的用尽了我所能想到的所有资源。
I sincerely hope you can give me a nudge in the right direction and I hope nobody will make a flamewar out of this, I have truly used all my resources I can think of.
真诚的问候。
推荐答案
昨天我想解决几乎同样的问题，我的想法得到了一些启发，我终于找到了解决方案。
I wanted to solve almost same problem yesterday and I got some inspiration by your thought and I finally find the solution.
- 要在JTextField的边框内创建文档，您可以使用
javax.swing.border.EmptyBorder.EmptyBorder（Insets borderInsets）
javax.swing.border.EmptyBorder.EmptyBorder(Insets borderInsets)
2.避免四个空白区域JTextField的角落，你可以使用
2.To avoid the white space in four corners of JTextField, you can use
g2d.setStroke（new BasicStroke（12））;
g2d.setStroke(new BasicStroke(12));
在绘制圆形矩形之前。笔划的宽度取决于您的需求，只需将其宽度足以覆盖角落的空间。
before drawing the round rectangle.The width of stroke is based on your demand and just make it wide enough to cover the space in corner.
这是代码：
import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.border.AbstractBorder;
import javax.swing.border.EmptyBorder;
public class JTextFieldTest {
JTextField textField;
boolean activate = false;
public void createUI(){
JFrame frame = new JFrame("Test JTextField");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setResizable(true);
MainPanel mainPanel = new MainPanel();
mainPanel.setBorder(BorderFactory.createEmptyBorder(5, 10, 5, 10));
frame.add(mainPanel,BorderLayout.CENTER);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(String[] args) {
JTextFieldTest jTextFieldTest = new JTextFieldTest();
jTextFieldTest.createUI();
}
public void setActivate(boolean activate){
this.activate = activate;
}
@SuppressWarnings("serial")
class MainPanel extends JPanel{
public MainPanel(){
textField = new JTextField("Please input:");
Font fieldFont = new Font("Arial", Font.PLAIN, 20);
textField.setFont(fieldFont);
textField.setBackground(Color.white);
textField.setForeground(Color.gray.brighter());
textField.setColumns(30);
textField.setBorder(BorderFactory.createCompoundBorder(
new CustomeBorder(),
new EmptyBorder(new Insets(15, 25, 15, 25))));
textField.addActionListener(new FieldListener());
textField.addMouseListener(new FieldMouseListener());
add(textField,BorderLayout.CENTER);
setBackground(Color.blue);
setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
}
}
@SuppressWarnings("serial")
class CustomeBorder extends AbstractBorder{
@Override
public void paintBorder(Component c, Graphics g, int x, int y,
int width, int height) {
// TODO Auto-generated method stubs
super.paintBorder(c, g, x, y, width, height);
Graphics2D g2d = (Graphics2D)g;
g2d.setStroke(new BasicStroke(12));
g2d.setColor(Color.blue);
g2d.drawRoundRect(x, y, width - 1, height - 1, 25, 25);
}
}
class FieldListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
System.out.println(textField.getText());
}
}
class FieldMouseListener implements MouseListener{
@Override
public void mouseClicked(MouseEvent e) {
// TODO Auto-generated method stub
if(activate == false){
textField.setText("");
}
activate = true;
textField.setForeground(Color.black);
}
@Override
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
@Override
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
}
}
这是效果：
有关详细信息，您可以浏览如何制作圆角矩形JTextField
For more details , you can browse How to make a round rectangle JTextField
这篇关于自定义JTextField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！
