itext7绘制百分比实心圆

import com.itextpdf.io.font.FontConstants;
import com.itextpdf.kernel.colors.Color;
import com.itextpdf.kernel.colors.DeviceRgb;
import com.itextpdf.kernel.geom.PageSize;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
import com.itextpdf.layout.Document;
import com.itextpdf.layout.element.Paragraph;
import com.itextpdf.layout.property.TextAlignment;

public class CircleExample {
    public static void main(String[] args) {
        // 创建PDF文档
        PdfDocument pdfDoc = new PdfDocument(new PdfWriter("circle_example.pdf"));
        Document doc = new Document(pdfDoc, PageSize.A4);

        // 创建一个页面
        doc.add(new Paragraph("绘制百分比实心圆").setTextAlignment(TextAlignment.CENTER).setFontSize(16));

        // 获取页面的画布
        PdfCanvas canvas = new PdfCanvas(pdfDoc.getFirstPage());

        // 设置圆心坐标和半径
        float centerX = 300;
        float centerY = 400;
        float radius = 100;

        // 设置填充颜色
        Color fillColor = new DeviceRgb(0, 176, 240); // 蓝色

        // 计算百分比对应的角度
        float percentage = 75;
        float angle = percentage / 100 * 360;

        // 绘制实心圆
        canvas.saveState()
                .setFillColor(fillColor)
                .circle(centerX, centerY, radius)
                .fill()
                .restoreState();

        // 绘制百分比文本
        canvas.saveState()
                .beginText()
                .setFontAndSize(FontConstants.HELVETICA, 14)
                .setColor(fillColor, true)
                .moveText(centerX - 20, centerY)
                .showText(String.format("%.0f%%", percentage))
                .endText()
                .restoreState();

        // 关闭文档
        doc.close();
    }
}