7433fa97f6
This will allow to create 2 separate populations in order to verify the effect of the hint. It's fine if it's not exactly balanced in practice, what matters is getting a significant amount of traffic for both scenarios (origin trial is enabled + an image is given high prio/origin trial is enabled + no image is given special treatment). Bug: T216499 Change-Id: I373960b2bed8437c2e97e6d729d43aff6901046c
214 lines
7.3 KiB
PHP
214 lines
7.3 KiB
PHP
<?php
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/**
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* Base class for the output of file transformation methods.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Media
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*/
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/**
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* Media transform output for images
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*
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* @ingroup Media
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*/
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class ThumbnailImage extends MediaTransformOutput {
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private static $firstNonIconImageRendered = false;
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/**
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* Get a thumbnail object from a file and parameters.
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* If $path is set to null, the output file is treated as a source copy.
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* If $path is set to false, no output file will be created.
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* $parameters should include, as a minimum, (file) 'width' and 'height'.
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* It may also include a 'page' parameter for multipage files.
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*
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* @param File $file
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* @param string $url URL path to the thumb
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* @param string|bool $path Filesystem path to the thumb
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* @param array $parameters Associative array of parameters
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*/
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function __construct( $file, $url, $path = false, $parameters = [] ) {
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# Previous parameters:
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# $file, $url, $width, $height, $path = false, $page = false
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$defaults = [
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'page' => false,
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'lang' => false
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];
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if ( is_array( $parameters ) ) {
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$actualParams = $parameters + $defaults;
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} else {
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# Using old format, should convert. Later a warning could be added here.
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$numArgs = func_num_args();
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$actualParams = [
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'width' => $path,
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'height' => $parameters,
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'page' => ( $numArgs > 5 ) ? func_get_arg( 5 ) : false
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] + $defaults;
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$path = ( $numArgs > 4 ) ? func_get_arg( 4 ) : false;
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}
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$this->file = $file;
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$this->url = $url;
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$this->path = $path;
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# These should be integers when they get here.
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# If not, there's a bug somewhere. But let's at
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# least produce valid HTML code regardless.
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$this->width = round( $actualParams['width'] );
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$this->height = round( $actualParams['height'] );
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$this->page = $actualParams['page'];
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$this->lang = $actualParams['lang'];
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}
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/**
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* Return HTML <img ... /> tag for the thumbnail, will include
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* width and height attributes and a blank alt text (as required).
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*
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* @param array $options Associative array of options. Boolean options
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* should be indicated with a value of true for true, and false or
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* absent for false.
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*
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* alt HTML alt attribute
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* title HTML title attribute
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* desc-link Boolean, show a description link
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* file-link Boolean, show a file download link
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* valign vertical-align property, if the output is an inline element
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* img-class Class applied to the \<img\> tag, if there is such a tag
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* desc-query String, description link query params
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* override-width Override width attribute. Should generally not set
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* override-height Override height attribute. Should generally not set
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* no-dimensions Boolean, skip width and height attributes (useful if
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* set in CSS)
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* custom-url-link Custom URL to link to
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* custom-title-link Custom Title object to link to
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* custom target-link Value of the target attribute, for custom-target-link
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* parser-extlink-* Attributes added by parser for external links:
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* parser-extlink-rel: add rel="nofollow"
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* parser-extlink-target: link target, but overridden by custom-target-link
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*
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* For images, desc-link and file-link are implemented as a click-through. For
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* sounds and videos, they may be displayed in other ways.
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*
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* @throws MWException
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* @return string
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*/
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function toHtml( $options = [] ) {
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global $wgPriorityHints, $wgPriorityHintsRatio, $wgElementTiming;
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if ( func_num_args() == 2 ) {
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throw new MWException( __METHOD__ . ' called in the old style' );
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}
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$alt = $options['alt'] ?? '';
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$query = $options['desc-query'] ?? '';
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$attribs = [
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'alt' => $alt,
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'src' => $this->url,
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'decoding' => 'async',
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];
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$elementTimingName = 'thumbnail';
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if ( $wgPriorityHints
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&& !self::$firstNonIconImageRendered
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&& $this->width * $this->height > 100 * 100 ) {
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self::$firstNonIconImageRendered = true;
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// Generate a random number between 0.01 and 1.0, included
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$random = rand( 1, 100 ) / 100.0;
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if ( $random <= $wgPriorityHintsRatio ) {
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$attribs['importance'] = 'high';
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$elementTimingName = 'thumbnail-high';
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} else {
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// This lets us track that the thumbnail *would* have gotten high priority but didn't.
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$elementTimingName = 'thumbnail-top';
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}
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}
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if ( $wgElementTiming ) {
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$attribs['elementtiming'] = $elementTimingName;
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}
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if ( !empty( $options['custom-url-link'] ) ) {
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$linkAttribs = [ 'href' => $options['custom-url-link'] ];
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if ( !empty( $options['title'] ) ) {
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$linkAttribs['title'] = $options['title'];
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}
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if ( !empty( $options['custom-target-link'] ) ) {
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$linkAttribs['target'] = $options['custom-target-link'];
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} elseif ( !empty( $options['parser-extlink-target'] ) ) {
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$linkAttribs['target'] = $options['parser-extlink-target'];
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}
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if ( !empty( $options['parser-extlink-rel'] ) ) {
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$linkAttribs['rel'] = $options['parser-extlink-rel'];
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}
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} elseif ( !empty( $options['custom-title-link'] ) ) {
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/** @var Title $title */
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$title = $options['custom-title-link'];
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$linkAttribs = [
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'href' => $title->getLinkURL(),
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'title' => empty( $options['title'] ) ? $title->getFullText() : $options['title']
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];
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} elseif ( !empty( $options['desc-link'] ) ) {
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$linkAttribs = $this->getDescLinkAttribs(
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empty( $options['title'] ) ? null : $options['title'],
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$query
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);
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} elseif ( !empty( $options['file-link'] ) ) {
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$linkAttribs = [ 'href' => $this->file->getUrl() ];
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} else {
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$linkAttribs = false;
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if ( !empty( $options['title'] ) ) {
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$attribs['title'] = $options['title'];
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}
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}
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if ( empty( $options['no-dimensions'] ) ) {
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$attribs['width'] = $this->width;
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$attribs['height'] = $this->height;
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}
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if ( !empty( $options['valign'] ) ) {
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$attribs['style'] = "vertical-align: {$options['valign']}";
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}
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if ( !empty( $options['img-class'] ) ) {
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$attribs['class'] = $options['img-class'];
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}
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if ( isset( $options['override-height'] ) ) {
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$attribs['height'] = $options['override-height'];
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}
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if ( isset( $options['override-width'] ) ) {
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$attribs['width'] = $options['override-width'];
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}
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// Additional densities for responsive images, if specified.
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// If any of these urls is the same as src url, it'll be excluded.
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$responsiveUrls = array_diff( $this->responsiveUrls, [ $this->url ] );
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if ( !empty( $responsiveUrls ) ) {
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$attribs['srcset'] = Html::srcSet( $responsiveUrls );
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}
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Hooks::run( 'ThumbnailBeforeProduceHTML', [ $this, &$attribs, &$linkAttribs ] );
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return $this->linkWrap( $linkAttribs, Xml::element( 'img', $attribs ) );
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}
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}
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