imagickFormat SVG producess invalid SVG

[muuvmuuv]

Describe the bug

I am trying to process the Imagick image after generation but with no possible option it seems right for me.

I have the imagick ext installed on PHP 8.1 and "libmagickcore-dev" (seems the one with SVG support).

This is the cachefile output:

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
  "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
<svg width="105" height="105">
stroke:#000000000000;fill:#000000000000;  <rect x="0" y="0" width="5" height="5"/>
stroke:#000000000000;fill:#000000000000;  <rect x="5" y="0" width="5" height="5"/>
stroke:#000000000000;fill:#000000000000;  <rect x="10" y="0" width="5" height="5"/>
stroke:#000000000000;fill:#000000000000;  <rect x="15" y="0" width="5" height="5"/>

This is the output SVG from Imagick:

<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
  "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
<svg width="105" height="105">
<g style="fill:black;fill-opacity:1;stroke:none;stroke-width:1;stroke-opacity:1;fill-rule:nonzero;">
<g style="">
  <rect x="0" y="0" width="5" height="5"/>
</g>
<g style="">
  <rect x="5" y="0" width="5" height="5"/>
</g>

Code sample

<?php

use chillerlan\QRCode\QRCode;
use chillerlan\QRCode\QROptions;

$qr = new QRCode(new QROptions([
	'outputType' => QRCode::OUTPUT_IMAGICK,
	// 'eccLevel' => QRCode::ECC_M,
	'imagickFormat' => 'svg',
	'imagickBG' => '#fff',
	'imageTransparent' => true,
	'imageTransparencyBG' => [100, 100, 100],
	'addQuietzone' => false,
	'markupLight' => '#fff',
	'markupDark' => '#000',
]));

$blob = $qr->render($content);

$img = new \Imagick();
$img->readImageBlob($blob);

$img->writeImage($file->path . '.post.svg');

// $img->setOption('png:compression-level', 6);
$img->resizeImage($size, $size, \Imagick::FILTER_LANCZOS, 1);
// $img->setImageFormat('png');

$img->writeImage($file->path . '.png');

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Environment (please complete the following information):

• PHP version/OS: PHP 8.1, latest Debian
• Library version: latest

Additional context
Add any other context about the problem here.

[codemasher]

Hmm why would you try to output SVG via ImageMagick when you could use the SVG output instead? Rendering/converting SVG via IM is generally not recommended - you could use the InkScape command line interface for proper conversion. Also, with your current settings you could just use the PNG output instead.

[muuvmuuv]

Because I want it always to have a 200x200 size (or based on user input) and Scale isn't what I'am looking for. IM looked like a good fit to resize the output without reading it afterwards or post-process.

[codemasher]

You can scale the SVG output to a fixed size via QROptions::svgWidth and QROptions::svgHeight. Alternatively, you can scale it via CSS properties or just put it in a <div> with a fixed size.

[muuvmuuv]

Yes ofc but I need it as PNG afterwards. Thats why I used IM. And anyway I have tried using SVG output but wasnt able to process it further. Best would be a blob or stream (dont know if php has that) to handle it through some other steps.

Another queastion but can post it later on a diff thread: adding a logo with the options provided, is that possible? I just saw adding a space for it but not adding an actual svg/png logo.

[codemasher]

Uh there is QROptions::$returnResource and here's a resize example too.

[muuvmuuv]

Ok I am sorry totally missed these two...

...the extra class for logo. Will test!

[muuvmuuv]

Final solution:

$options = new QROptions([
    'imageBase64' => false,
    'outputType' => QRCode::OUTPUT_IMAGICK,
    'eccLevel' => QRCode::ECC_M,
    'returnResource' => true,
    'imageTransparent' => true,
    'addQuietzone' => false,
    'markupLight' => 'rgba(0,0,0,0)',
    'markupDark' => '#000000',
]);
$qr = new QRCode($options);

/** @var \Imagick */
$img = $qr->render($content);

$img->setImageFormat('png');
$img->resizeImage($size, $size, \Imagick::FILTER_GAUSSIAN, 0.1);
$img->setOption('png:compression-level', 6);

// Laravel can only display saved files
return $img->writeImage($file->path);