Coder Social home page Coder Social logo

moodle-local_dompdf's Introduction

Dompdf

Dompdf is an HTML to PDF converter

At its heart, dompdf is (mostly) a CSS 2.1 compliant HTML layout and rendering engine written in PHP. It is a style-driven renderer: it will download and read external stylesheets, inline style tags, and the style attributes of individual HTML elements. It also supports most presentational HTML attributes.

Requirements

  • PHP 7.1+
  • Moodle 3.5+
  • MBString extension

Recommendations

  • OPcache (OPcache, XCache, APC, etc.): improves performance
  • IMagick or GMagick extension: improves image processing performance

Visit the wiki for more information: https://github.com/dompdf/dompdf/wiki/Requirements

Internal settings

By default whenever a PDF is generated systems uses $CFG->localcachedir/dompdf to store temporary data.

Usage

To create new instance of the PDF class use following code:

$pdf = \local_dompdf\api\pdf::createnew();

This gives you an instance of \Dompdf\Dompdf class and you just use it as outlined in the official library documentation.

Images stored in Moodle HTML editor.

In case you want to convert to PDF HTML that does contain images coming from Moodle internal file systems you need to employ the image recoding for each specific field.

For example if you have a place where you can set the image in HTML editor when you retrieve it from database to display it on screen you use this code:

$rawtext = $DB->get_field('sometable', 'somefield', ['id' => 123]);
$options = [
    'noclean' => true, 'para' => false, 'filter' => true,
    'context' => $context, 'overflowdiv' => true
];
$intro = file_rewrite_pluginfile_urls(
    $rawtext, 'pluginfile.php', $context->id, $component, $filearea, $itemid
);
$value = format_text($intro, $format, $options, null);

For Dmpdf this does not work. There is a specific rewrite method that encode's images directly into html and makes them usable by library:

$rawtext = $DB->get_field('sometable', 'somefield', ['id' => 123]);
$options = [
    'noclean' => true, 'para' => false, 'filter' => true,
    'context' => $context, 'overflowdiv' => true
];
$intro = \local_dompdf\api\pdf::file_rewrite_image_urls(
    $rawtext, $itemid, $filearea, $contextid, $component 
);
$value = format_text($intro, $format, $options, null);

Examples

Examples are located in examples directory of the plugin.

moodle-local_dompdf's People

Contributors

kiklop74 avatar lukascelinak avatar

Stargazers

 avatar

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    ๐Ÿ–– Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. ๐Ÿ“Š๐Ÿ“ˆ๐ŸŽ‰

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google โค๏ธ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.