目前,我正在为一个研究项目工作,但是我有一个问题,我既找不到解决方案,也无法理解问题。
我用Java语言制作了一个响应式计算器,每个键都响应式。但是,我的显示区域(JLabel)无法填充我的窗口的水平位置。如果我增加它的大小,那所有的列都会改变它的大小! > <
有人能帮我吗?
import java.awt.Color;
import java.awt.ComponentOrientation;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.border.Border;
import javax.swing.border.LineBorder;
public class CalculatorUI {
static JButton designButton(GridBagConstraints gbc, String text)
{
JButton button = new JButton(text);
ImageIcon image;
Border withoutBorder = new LineBorder(new Color(75, 75, 75), 1, true);
button.setBorder(withoutBorder);
button.setFont(new Font("Gill Sans MT", Font.BOLD, 40));
button.setBackground(new java.awt.Color(23,23,23));
gbc.weightx = 0.5;
gbc.weighty = 0.5;
gbc.fill = GridBagConstraints.BOTH;
gbc.gridwidth = 1;
switch (text) {
case "sqr":
button.setText("\u221A");
button.setForeground(new Color(150, 150, 150));
break;
case "sq":
button.setText("x²");
button.setForeground(new Color(150, 150, 150));
break;
case "1x":
image = new ImageIcon("C:\\Users\\Emixam23\\Documents\\Workspace\\SimpleCount\\assets\\1x.png");
button.setText(null);
button.setIcon(image);
break;
case "DEL":
image = new ImageIcon("C:\\Users\\Emixam23\\Documents\\Workspace\\SimpleCount\\assets\\del.png");
button.setText(null);
button.setIcon(image);
break;
case "DIV":
image = new ImageIcon("C:\\Users\\Emixam23\\Documents\\Workspace\\SimpleCount\\assets\\div.png");
button.setText(null);
button.setIcon(image);
break;
// CS -> Change sign !
case "CS":
image = new ImageIcon("C:\\Users\\Emixam23\\Documents\\Workspace\\SimpleCount\\assets\\cs.png");
button.setText(null);
button.setIcon(image);
break;
default:
button.setForeground(new Color(150, 150, 150));
break;
}
return (button);
}
static JLabel designTextField(GridBagConstraints gbc)
{
JLabel display = new JLabel("---------------");
Border withoutBorder = new LineBorder(new Color(0, 0, 0), 0, true);
display.setBorder(withoutBorder);
//display.setFont(new Font("Gill Sans MT", Font.BOLD, 40));
gbc.fill = GridBagConstraints.NORTH;
gbc.weightx = 0.5;
gbc.gridx = 0;
gbc.gridy = 0;
return (display);
}
public static void makeSimpleGUI(Container pane) {
JButton button;
pane.setComponentOrientation(ComponentOrientation.LEFT_TO_RIGHT);
pane.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
//Add of jlabel to display results
pane.add(designTextField(gbc));
String[] keys = {"%", "sqr", "sq", "1x", "CE", "C", "DEL", "DIV", "7", "8", "9", "X", "4", "5", "6", "-", "1", "2", "3", "+", "CS", "0", ".", "="};
for (int i = 0; i < keys.length; i++)
{
button = designButton(gbc, keys[i]);
gbc.gridx = i % 4;
gbc.gridy = 1 + (i / 4);
pane.add(button, gbc);
}
}
public static void CalculatorGUI() {
JFrame frame = new JFrame("SimpleCount");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
makeSimpleGUI(frame.getContentPane());
frame.setMinimumSize(new Dimension(400, 400));
frame.setVisible(true);
}
public static void main(String[] args) {
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
CalculatorGUI();
}
});
}
}
最佳答案
您可以使用...将JLabel
添加到面板中。
pane.add(designTextField(gbc));
但这并不适用
GridBagConstraints
,该方法已将方法修改过的GridBagConstraints.NORTH
应用于标签,相反,您应该做更多类似的事情...pane.add(designTextField(gbc), gbc);
但是,我不鼓励这样做,您的方法应该没有副作用,它应该做一个很好的工作
static JLabel designTextField()
{
JLabel display = new JLabel("---------------");
Border withoutBorder = new LineBorder(new Color(0, 0, 0), 0, true);
display.setBorder(withoutBorder);
//display.setFont(new Font("Gill Sans MT", Font.BOLD, 40));
return (display);
}
public static void makeSimpleGUI(Container pane) {
JButton button;
pane.setComponentOrientation(ComponentOrientation.LEFT_TO_RIGHT);
pane.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.weightx = 0.5;
gbc.gridx = 0;
gbc.gridy = 0;
//Add of jlabel to display results
pane.add(designTextField(), gbc);
此外,
JLabel
是锚点属性,而不是填充属性因为
LineBorder
和按钮共享相同的空间(列),所以您需要允许标签跨越多列。加...
gbc.gridwidth = GridBagConstraints.REMAINDER;
约束
我使用了带有红色的,因此可以直观地看到布局
关于java - 使用Java Swing JLabel进行扩展的效果不佳,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/33680865/