如何将 SVG 图像添加到 pdf

时间:2021-01-03 07:23:28

标签: javascript php css pdf svg

我想在有人点击生成 pdf 按钮时生成 pdf。该pdf包含与用户在网页上的图像中突出显示的内容相对应的突出显示的一堆方块的图像。每当我尝试包含 svg 时,我都会得到一个空白的 pdf。有什么帮助吗?

trial.html:

    <?php
    use Dompdf\Dompdf;

    use PHPMailer\PHPMailer\PHPMailer;
    use PHPMailer\PHPMailer\SMTP;
    use PHPMailer\PHPMailer\Exception;
    
    

    if(isset($_POST['send']))
    {

     $output = ' <!DOCTYPE html>
                <svg  width="564" height="409" >
                    <image
                        href="https://media.geeksforgeeks.org/wp-content/uploads/unique-rectangles-formed-using- 
                    n-unit-squares.png"
                        width="564"
                        height="409"
                    />
                    <polygon title="1" points="21,385 24,309 100,309 101,385" />
                    <polygon title="2" points="102,305 23,304 23,228 101,227" />
                    <polygon title="3" points="103,225 26,228 25,149 99,151" />
                    <polygon title="4" points="103,147 102,65 25,70 23,147" />
                </svg>';
      //   $output .= '<img src="data:image/svg+xml;base64,'.base64_encode($svg).'"  width="100" height="100" />';

     require 'C:\Users\Main\vendor/autoload.php';  

     $cart_body='<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Squares</title></head><body><p>Test Printing...</p></body></html>';
             $dompdf = new Dompdf();
             $dompdf->load_html($output);//body -> html content which needs to be converted as pdf..
             $dompdf->render();
             $dompdf->stream("sample.pdf");

     }?>

script.js:

    function handleSVGClick(event) {
    if (event.target.tagName === "polygon") {
      event.target.style.fill = `hsl(${Math.random() * 360}, 90%, 60%)`;
    }
  }

style.css:

    polygon {
    stroke-width: 2px;
    stroke: #333;
    fill: transparent;
  }

1 个答案:

答案 0 :(得分:0)

试试这个:

trial.html:

    <?php
    require 'C:/Users/Main/vendor/autoload.php';  

    use Dompdf\Dompdf;

    use PHPMailer\PHPMailer\PHPMailer;
    use PHPMailer\PHPMailer\SMTP;
    use PHPMailer\PHPMailer\Exception;
    
    

    if(isset($_POST['send']))
    {

     //any embedded images need to be base64 encoded as DataURIs
     $svg = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>
                <svg xmlns="http://www.w3.org/2000/svg" width="564" height="409" >
                    <image
                        href="data:image/jpg;base64,' . base64_encode(file_get_contents('https://media.geeksforgeeks.org/wp-content/uploads/unique-rectangles-formed-using-n-unit-squares.png')) . '"
                        width="564"
                        height="409"
                    />
                    <polygon title="1" points="21,385 24,309 100,309 101,385" />
                    <polygon title="2" points="102,305 23,304 23,228 101,227" />
                    <polygon title="3" points="103,225 26,228 25,149 99,151" />
                    <polygon title="4" points="103,147 102,65 25,70 23,147" />
                </svg>';

     //convert SVG image to an <img /> element with the SVG image as a DataURI
     $output = '<img src="data:image/svg+xml;base64,'.base64_encode($svg).'"  width="564" height="409" />';

     $cart_body='<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Squares</title></head><body><p>Test Printing...</p></body></html>';
     $dompdf = new Dompdf();
     $dompdf->load_html($output); //body -> html content which needs to be converted as pdf..
     $dompdf->render();
     $dompdf->stream("sample.pdf");

     }?>

script.js:

  function handleSVGClick(event) {
    if (event.target.tagName === "polygon") {
      event.target.style.fill = `hsl(${Math.random() * 360}, 90%, 60%)`;
    }
  }

style.css:

  polygon {
    stroke-width: 2px;
    stroke: #333;
    fill: transparent;
  }
<块引用>

嵌入“原始”SVG () 还不起作用,您需要链接到外部 SVG 文件,或使用像这样的 DataURI:

$html = '<img src="data:image/svg+xml;base64,' . base64_encode($svg) . '" ...>';

上面的代码使用 $svg 作为独立的 SVG 图像(而不是用于嵌入 HTML 的 SVG 图像)。然后将其编码为 <img /> 元素的 DataURI,该元素应呈现为 PDF。由于 SVG 图像本身包含嵌入图像,因此也需要 encoded as a DataURI

PDF 中的图像应如下所示:

enter image description here