d6f2e8e9e6
* SVG metadata is now stored and versioned. Chosing not to provide fallback for these functions as they seem unused outside of SVG.php (per Google) and grep.
94 lines
2.6 KiB
PHP
94 lines
2.6 KiB
PHP
<?php
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/**
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* Global functions related to images
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*
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* @file
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*/
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/**
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* Determine if an image exists on the 'bad image list'.
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*
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* The format of MediaWiki:Bad_image_list is as follows:
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* * Only list items (lines starting with "*") are considered
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* * The first link on a line must be a link to a bad image
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* * Any subsequent links on the same line are considered to be exceptions,
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* i.e. articles where the image may occur inline.
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*
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* @param $name string the image name to check
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* @param $contextTitle Title: the page on which the image occurs, if known
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* @return bool
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*/
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function wfIsBadImage( $name, $contextTitle = false ) {
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static $badImages = false;
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wfProfileIn( __METHOD__ );
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# Handle redirects
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$redirectTitle = RepoGroup::singleton()->checkRedirect( Title::makeTitle( NS_FILE, $name ) );
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if( $redirectTitle ) {
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$name = $redirectTitle->getDbKey();
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}
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# Run the extension hook
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$bad = false;
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if( !wfRunHooks( 'BadImage', array( $name, &$bad ) ) ) {
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wfProfileOut( __METHOD__ );
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return $bad;
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}
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if( !$badImages ) {
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# Build the list now
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$badImages = array();
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$lines = explode( "\n", wfMsgForContentNoTrans( 'bad_image_list' ) );
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foreach( $lines as $line ) {
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# List items only
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if ( substr( $line, 0, 1 ) !== '*' ) {
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continue;
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}
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# Find all links
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$m = array();
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if ( !preg_match_all( '/\[\[:?(.*?)\]\]/', $line, $m ) ) {
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continue;
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}
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$exceptions = array();
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$imageDBkey = false;
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foreach ( $m[1] as $i => $titleText ) {
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$title = Title::newFromText( $titleText );
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if ( !is_null( $title ) ) {
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if ( $i == 0 ) {
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$imageDBkey = $title->getDBkey();
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} else {
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$exceptions[$title->getPrefixedDBkey()] = true;
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}
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}
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}
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if ( $imageDBkey !== false ) {
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$badImages[$imageDBkey] = $exceptions;
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}
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}
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}
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$contextKey = $contextTitle ? $contextTitle->getPrefixedDBkey() : false;
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$bad = isset( $badImages[$name] ) && !isset( $badImages[$name][$contextKey] );
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wfProfileOut( __METHOD__ );
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return $bad;
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}
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/**
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* Calculate the largest thumbnail width for a given original file size
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* such that the thumbnail's height is at most $maxHeight.
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* @param $boxWidth Integer Width of the thumbnail box.
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* @param $boxHeight Integer Height of the thumbnail box.
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* @param $maxHeight Integer Maximum height expected for the thumbnail.
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* @return Integer.
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*/
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function wfFitBoxWidth( $boxWidth, $boxHeight, $maxHeight ) {
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$idealWidth = $boxWidth * $maxHeight / $boxHeight;
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$roundedUp = ceil( $idealWidth );
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if( round( $roundedUp * $boxHeight / $boxWidth ) > $maxHeight )
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return floor( $idealWidth );
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else
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return $roundedUp;
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}
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