mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
86 lines
2.6 KiB
PHP
86 lines
2.6 KiB
PHP
<?php
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/**
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* Represents an Image
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*
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* @package framework
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* @subpackage filesystem
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*/
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class Image extends File {
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public function __construct($record = null, $isSingleton = false, $model = null) {
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parent::__construct($record, $isSingleton, $model);
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$this->File->setAllowedCategories('image/supported');
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}
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public function getCMSFields() {
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$fields = parent::getCMSFields();
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$fields->insertAfter(
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'LastEdited',
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new ReadonlyField("Dimensions", _t('AssetTableField.DIM','Dimensions') . ':')
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);
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return $fields;
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}
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public function getIsImage() {
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return true;
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}
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/**
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* Helper method to regenerate all image links in the given HTML block, optionally resizing them if
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* the image native size differs to the width and height properties on the <img /> tag
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*
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* @param string $value HTML value
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* @return string value with links resampled
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*/
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public static function regenerate_html_links($value) {
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$htmlValue = Injector::inst()->create('HTMLValue', $value);
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// Resample images and add default attributes
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$imageElements = $htmlValue->getElementsByTagName('img');
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if($imageElements) foreach($imageElements as $imageElement) {
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$imageDO = null;
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$src = $imageElement->getAttribute('src');
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// Skip if this image has a shortcode 'src'
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if(preg_match('/^\[.+\]$/', $src)) {
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continue;
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}
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// strip any ?r=n data from the src attribute
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$src = preg_replace('/([^\?]*)\?r=[0-9]+$/i', '$1', $src);
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// Resample the images if the width & height have changed.
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$fileID = $imageElement->getAttribute('data-fileid');
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if($fileID && ($imageDO = File::get()->byID($fileID))) {
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$width = (int)$imageElement->getAttribute('width');
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$height = (int)$imageElement->getAttribute('height');
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if($imageDO instanceof Image && $width && $height
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&& ($width != $imageDO->getWidth() || $height != $imageDO->getHeight())
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) {
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//Make sure that the resized image actually returns an image:
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$resized = $imageDO->ResizedImage($width, $height);
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if($resized) {
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$imageDO = $resized;
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}
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}
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$src = $imageDO->getURL();
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}
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// Update attributes, including intelligent defaults for alt and title
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$imageElement->setAttribute('src', $src);
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if(!$imageElement->getAttribute('alt')) {
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$imageElement->setAttribute('alt', '');
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}
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if(!$imageElement->getAttribute('title')) {
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$imageElement->setAttribute('title', '');
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}
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// Use this extension point to manipulate images inserted using TinyMCE,
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// e.g. add a CSS class, change default title
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self::singleton()
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->extend('regenerateImageHTML', $imageDO, $imageElement);
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}
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return $htmlValue->getContent();
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}
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}
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