MediaWiki 1.17.0-scripts

[autoinstalls/mediawiki.git] / includes / media / PNG.php

diff --git a/includes/media/PNG.php b/includes/media/PNG.php
new file mode 100644 (file)
index 0000000..5197282
--- /dev/null
+++ b/includes/media/PNG.php
@@ -0,0 +1,82 @@
+<?php
+/**
+ * Handler for PNG images.
+ *
+ * @file
+ * @ingroup Media
+ */
+
+/**
+ * Handler for PNG images.
+ *
+ * @ingroup Media
+ */
+class PNGHandler extends BitmapHandler {
+       
+       function getMetadata( $image, $filename ) {
+               if ( !isset($image->parsedPNGMetadata) ) {
+                       try {
+                               $image->parsedPNGMetadata = PNGMetadataExtractor::getMetadata( $filename );
+                       } catch( Exception $e ) {
+                               // Broken file?
+                               wfDebug( __METHOD__ . ': ' . $e->getMessage() . "\n" );
+                               return '0';
+                       }
+               }
+
+               return serialize($image->parsedPNGMetadata);
+
+       }
+       
+       function formatMetadata( $image ) {
+               return false;
+       }
+       
+       function isAnimatedImage( $image ) {
+               $ser = $image->getMetadata();
+               if ($ser) {
+                       $metadata = unserialize($ser);
+                       if( $metadata['frameCount'] > 1 ) return true;
+               }
+               return false;
+       }
+       
+       function getMetadataType( $image ) {
+               return 'parsed-png';
+       }
+       
+       function isMetadataValid( $image, $metadata ) {
+               wfSuppressWarnings();
+               $data = unserialize( $metadata );
+               wfRestoreWarnings();
+               return (boolean) $data;
+       }
+       function getLongDesc( $image ) {
+               global $wgLang;
+               $original = parent::getLongDesc( $image );
+
+               wfSuppressWarnings();
+               $metadata = unserialize($image->getMetadata());
+               wfRestoreWarnings();
+
+               if( !$metadata || $metadata['frameCount'] <= 0 )
+                       return $original;
+
+               $info = array();
+               $info[] = $original;
+               
+               if ($metadata['loopCount'] == 0)
+                       $info[] = wfMsgExt( 'file-info-png-looped', 'parseinline' );
+               elseif ($metadata['loopCount'] > 1)
+                       $info[] = wfMsgExt( 'file-info-png-repeat', 'parseinline', $metadata['loopCount'] );
+               
+               if ($metadata['frameCount'] > 0)
+                       $info[] = wfMsgExt( 'file-info-png-frames', 'parseinline', $metadata['frameCount'] );
+               
+               if ($metadata['duration'])
+                       $info[] = $wgLang->formatTimePeriod( $metadata['duration'] );
+               
+               return $wgLang->commaList( $info );
+       }
+
+}