ILIAS  release_8 Revision v8.24
class.ilTestPDFGenerator.php
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1<?php
27class ilTestPDFGenerator
28{
29 public const PDF_OUTPUT_DOWNLOAD = 'D';
30 public const PDF_OUTPUT_INLINE = 'I';
31 public const PDF_OUTPUT_FILE = 'F';
32
33 public const service = "Test";
34
35 private static function buildHtmlDocument($contentHtml, $styleHtml): string
36 {
37 return "
38 <html>
39 <head>
40 <meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />
41 $styleHtml
42 </head>
43 <body>$contentHtml</body>
44 </html>
45 ";
46 }
47
53 private static function makeHtmlDocument($contentHtml, $styleHtml): string
54 {
55 if (!is_string($contentHtml) || !strlen(trim($contentHtml))) {
56 return $contentHtml;
57 }
58
59 $html = self::buildHtmlDocument($contentHtml, $styleHtml);
60
61 $dom = new DOMDocument("1.0", "utf-8");
62 if (!@$dom->loadHTML($html)) {
63 return $html;
64 }
65
66 $invalid_elements = array();
67
68 $script_elements = $dom->getElementsByTagName('script');
69 foreach ($script_elements as $elm) {
70 $invalid_elements[] = $elm;
71 }
72
73 foreach ($invalid_elements as $elm) {
74 $elm->parentNode->removeChild($elm);
75 }
76
77 // remove noprint elems as tcpdf will make empty pdf when hidden by css rules
78 $domX = new DomXPath($dom);
79 foreach ($domX->query("//*[contains(@class, 'noprint')]") as $node) {
80 $node->parentNode->removeChild($node);
81 }
82
83 $dom->encoding = 'UTF-8';
84
85 $img_src_map = array();
86 foreach ($dom->getElementsByTagName('img') as $elm) {
88 $uid = 'img_src_' . uniqid();
89 $src = $elm->getAttribute('src');
90
91 $elm->setAttribute('src', $uid);
92
93 $img_src_map[$uid] = $src;
94 }
95
96 $cleaned_html = $dom->saveHTML();
97
98 foreach ($img_src_map as $uid => $src) {
99 $cleaned_html = str_replace($uid, $src, $cleaned_html);
100 }
101
102 if (!$cleaned_html) {
103 return $html;
104 }
105
106 return $cleaned_html;
107 }
108
109 public static function generatePDF($pdf_output, $output_mode, $filename = null, $purpose = null)
110 {
111 $pdf_output = self::preprocessHTML($pdf_output);
112
113 if (substr($filename, strlen($filename) - 4, 4) != '.pdf') {
114 $filename .= '.pdf';
115 }
116 $pdf_factory = new ilHtmlToPdfTransformerFactory();
117
118 if (!$pdf_factory->deliverPDFFromHTMLString(
119 $pdf_output,
120 $filename,
121 $output_mode,
122 self::service,
123 $purpose
124 )) {
125 throw new \Exception('could not write PDF');
126 }
127 return true;
128 }
129
130 public static function preprocessHTML($html): string
131 {
132 $html = self::makeHtmlDocument($html, '<style>' . self::getCssContent() . '</style>');
133
134 return $html;
135 }
136
137 protected static function getTemplatePath($a_filename, $module_path = 'Modules/Test/'): string
138 {
139 // use ilStyleDefinition instead of account to get the current skin
140 include_once "Services/Style/System/classes/class.ilStyleDefinition.php";
141 $fname = '';
142 if (ilStyleDefinition::getCurrentSkin() != "default") {
143 $fname = "./Customizing/global/skin/" .
144 ilStyleDefinition::getCurrentSkin() . "/" . $module_path . basename($a_filename);
145 }
146
147 if ($fname == "" || !file_exists($fname)) {
148 $fname = "./" . $module_path . "templates/default/" . basename($a_filename);
149 }
150 return $fname;
151 }
152
153 protected static function getCssContent(): string
154 {
155 $cssContent = file_get_contents(self::getTemplatePath('delos.css', ''));
156 $cssContent .= file_get_contents(self::getTemplatePath('test_pdf.css'));
157
158 return $cssContent;
159 }
160}
$filename
$filename
Definition: buildRTE.php:78
ilStyleDefinition\getCurrentSkin
static getCurrentSkin()
get the current skin use always this function instead of getting the account's skin the current skin ...
Definition: class.ilStyleDefinition.php:87
ilTestPDFGenerator
This file is part of ILIAS, a powerful learning management system published by ILIAS open source e-Le...
Definition: class.ilTestPDFGenerator.php:28
ilTestPDFGenerator\getTemplatePath
static getTemplatePath($a_filename, $module_path='Modules/Test/')
Definition: class.ilTestPDFGenerator.php:137
ilTestPDFGenerator\generatePDF
static generatePDF($pdf_output, $output_mode, $filename=null, $purpose=null)
Definition: class.ilTestPDFGenerator.php:109
ilTestPDFGenerator\buildHtmlDocument
static buildHtmlDocument($contentHtml, $styleHtml)
Definition: class.ilTestPDFGenerator.php:35