java 在 pdf 中添加形状-凯发线上登陆下载网址

本教程将展示如何使用spire.pdf for java在pdf文档中绘制形状，以及设置形状边线颜色和填充色。

import java.awt.color;
import java.awt.geom.rectangle2d;
import com.spire.ms.system.drawing.pointf;
import com.spire.pdf.graphics.*;
public class drawshapes {
	public static void main(string[] args) {
		
		//创建pdfdocument对象
        pdfdocument doc = new pdfdocument();
        
        //添加一页
        pdfpagebase page = doc.getpages().add();      
        
        //绘制矩形
        pdfpen pen =new pdfpen(new pdfrgbcolor(color.black),0.1);
        rectangle2d.float rect1 = new rectangle2d.float(0, 20, 120, 50);
        pdflineargradientbrush lineargradientbrush = new pdflineargradientbrush(rect1,new pdfrgbcolor(color.white),new pdfrgbcolor(color.blue),pdflineargradientmode.horizontal);          
        page.getcanvas().drawrectangle(pen, lineargradientbrush, rect1);
        
        //绘制椭圆
        pointf centerstart= new pointf(205,45);
        pointf centerend= new pointf(205,45);
        pdfradialgradientbrush radialgradientbrush = new pdfradialgradientbrush(centerstart,0,centerend,25,new pdfrgbcolor(color.pink),new pdfrgbcolor(color.red));
        rectangle2d.float rect2= new rectangle2d.float(180, 20, 50, 50);
        page.getcanvas().drawellipse(pen,radialgradientbrush,rect2);
        
        //绘制多边形
        pointf p1=new pointf(290,70);
        pointf p2=new pointf(310,45);
        pointf p3=new pointf(325,60);
        pointf p4=new pointf(340,20);
        pointf p5=new pointf(370,70);
        pointf[] points = {p1, p2, p3, p4, p5};
        pdfbrush brush= pdfbrushes.getgreenyellow();
        page.getcanvas().drawpolygon(pen,brush, points);
        
        //绘制弧形
        float startangle = 0;
        float sweepangle = 270;
        rectangle2d.float rect3= new rectangle2d.float(0, 110, 50, 50);
        page.getcanvas().drawarc(pen, rect3, startangle, sweepangle);
        
        //绘制扇形     
        rectangle2d.float rect4= new rectangle2d.float(70, 110, 50, 50);
        page.getcanvas().drawpie(pen, rect4, startangle, sweepangle);
        
        //绘制直线 
        pointf pstart=new pointf(205,110);
        pointf pend=new pointf(205,160);
        page.getcanvas().drawline(pen, pstart, pend);
  
        //绘制贝塞尔曲线
        pointf startpoint = new pointf(290, 135);
        pointf firstcontrolpoint = new pointf(330, 70);
        pointf secondcontrolpoint = new pointf(330, 200);
        pointf endpoint = new pointf(370, 135);
        page.getcanvas().drawbezier(pen, startpoint, firstcontrolpoint, secondcontrolpoint, endpoint);
        
        //保存文档
        doc.savetofile("drawshapes.pdf", fileformat.pdf);       
	}
}