package tools;
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import javax.swing.*;
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import java.awt.*;
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public class CustomProgressBar extends JProgressBar {
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private Color textColor = Color.BLACK; // 默认文本颜色
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public CustomProgressBar() {
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super();
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setStringPainted(true); // 允许显示文本
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}
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public void setTextColor(Color textColor) {
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this.textColor = textColor;
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}
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@Override
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protected void paintComponent(Graphics g) {
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// 先调用父类的paintComponent，绘制进度条的背景和前景
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super.paintComponent(g);
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if (isStringPainted()) {
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// 获取进度百分比的文本
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String text = String.format("%d%%", (int)(getPercentComplete() * 100));
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Graphics2D g2d = (Graphics2D) g;
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// 获取文本区域的矩形区域
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FontMetrics metrics = g2d.getFontMetrics();
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int x = (getWidth() - metrics.stringWidth(text)) / 2;
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int y = (getHeight() + metrics.getAscent()) / 2;
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// 清除文本区域，避免重影
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g2d.setColor(getBackground()); // 使用背景色来清除区域
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g2d.fillRect(x, y - metrics.getAscent(), metrics.stringWidth(text), metrics.getHeight());
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// 设置文本颜色和字体
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g2d.setColor(textColor);
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g2d.setFont(getFont().deriveFont(Font.BOLD));
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// 绘制文本
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g2d.drawString(text, x, y);
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}
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}
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}
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