|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
declare(strict_types=1); |
|
4
|
|
|
|
|
5
|
|
|
namespace Kerox\TwigImagePlaceholder; |
|
6
|
|
|
|
|
7
|
|
|
use Twig\Extension\AbstractExtension; |
|
8
|
|
|
use Twig\TwigFunction; |
|
9
|
|
|
|
|
10
|
|
|
final class SvgPlaceholderExtension extends AbstractExtension |
|
11
|
|
|
{ |
|
12
|
|
|
private const DEFAULT_OPTIONS = [ |
|
13
|
|
|
'fontFamily' => 'sans-serif', |
|
14
|
|
|
'fontWeight' => 'bold', |
|
15
|
|
|
'bgColor' => '#ddd', |
|
16
|
|
|
'textColor' => 'rgba(0,0,0,0.5)', |
|
17
|
|
|
]; |
|
18
|
|
|
|
|
19
|
1 |
|
public function getFunctions(): array |
|
20
|
|
|
{ |
|
21
|
|
|
return [ |
|
22
|
1 |
|
new TwigFunction('svg_placeholder', [$this, 'getSvgPlaceholder'], ['is_safe' => ['html']]), |
|
23
|
1 |
|
new TwigFunction('svg_placeholder_uri', [$this, 'getSvgPlaceholderUri']), |
|
24
|
|
|
]; |
|
25
|
|
|
} |
|
26
|
|
|
|
|
27
|
3 |
|
public function getSvgPlaceholder(int $width = 300, int $height = 150, array $options = []): string |
|
28
|
|
|
{ |
|
29
|
3 |
|
$options = array_replace(self::DEFAULT_OPTIONS, $options); |
|
30
|
|
|
$options += [ |
|
31
|
3 |
|
'fontSize' => $fontSize = floor(min($width, $height) * 0.2), |
|
32
|
3 |
|
'dy' => $fontSize * 0.35, |
|
33
|
3 |
|
'text' => sprintf('%dx%d', $width, $height), |
|
34
|
|
|
]; |
|
35
|
|
|
|
|
36
|
3 |
|
$doc = new \DOMDocument('1.0'); |
|
37
|
|
|
|
|
38
|
3 |
|
$rectElement = $doc->createElement('rect'); |
|
39
|
3 |
|
$rectElement->setAttribute('fill', $options['bgColor']); |
|
40
|
3 |
|
$rectElement->setAttribute('width', (string) $width); |
|
41
|
3 |
|
$rectElement->setAttribute('height', (string) $height); |
|
42
|
|
|
|
|
43
|
3 |
|
$textElement = $doc->createElement('text'); |
|
44
|
3 |
|
$textElement->setAttribute('fill', $options['textColor']); |
|
45
|
3 |
|
$textElement->setAttribute('font-family', $options['fontFamily']); |
|
46
|
3 |
|
$textElement->setAttribute('font-size', (string) $options['fontSize']); |
|
47
|
3 |
|
$textElement->setAttribute('font-weight', (string)$options['fontWeight']); |
|
48
|
3 |
|
$textElement->setAttribute('dy', (string) $options['dy']); |
|
49
|
3 |
|
$textElement->setAttribute('x', '50%'); |
|
50
|
3 |
|
$textElement->setAttribute('y', '50%'); |
|
51
|
3 |
|
$textElement->setAttribute('text-anchor', 'middle'); |
|
52
|
3 |
|
$textElement->appendChild($doc->createTextNode($options['text'])); |
|
53
|
|
|
|
|
54
|
3 |
|
$svgElement = $doc->createElement('svg'); |
|
55
|
3 |
|
$svgElement->setAttribute('xmlns', 'http://www.w3.org/2000/svg'); |
|
56
|
3 |
|
$svgElement->setAttribute('width', (string) $width); |
|
57
|
3 |
|
$svgElement->setAttribute('height', (string) $height); |
|
58
|
3 |
|
$svgElement->setAttribute('viewBox', "0 0 $width $height"); |
|
59
|
3 |
|
$svgElement->appendChild($rectElement); |
|
60
|
3 |
|
$svgElement->appendChild($textElement); |
|
61
|
|
|
|
|
62
|
3 |
|
$doc->appendChild($svgElement); |
|
63
|
|
|
|
|
64
|
3 |
|
return trim($doc->saveHTML()); |
|
65
|
|
|
} |
|
66
|
|
|
|
|
67
|
1 |
|
public function getSvgPlaceholderUri(int $width = 300, int $height = 150, array $options = []): string |
|
68
|
|
|
{ |
|
69
|
1 |
|
return sprintf('data:image/svg+xml;charset=UTF-8,%s', rawurlencode($this->getSvgPlaceholder($width, $height, $options))); |
|
70
|
|
|
} |
|
71
|
|
|
} |
|
72
|
|
|
|
ker0x /
twig-image-placeholder-extension
