3 * Handler for PNG images.
10 * Handler for PNG images.
14 class PNGHandler
extends BitmapHandler
{
16 function getMetadata( $image, $filename ) {
17 if ( !isset($image->parsedPNGMetadata
) ) {
19 $image->parsedPNGMetadata
= PNGMetadataExtractor
::getMetadata( $filename );
20 } catch( Exception
$e ) {
22 wfDebug( __METHOD__
. ': ' . $e->getMessage() . "\n" );
27 return serialize($image->parsedPNGMetadata
);
31 function formatMetadata( $image ) {
35 function isAnimatedImage( $image ) {
36 $ser = $image->getMetadata();
38 $metadata = unserialize($ser);
39 if( $metadata['frameCount'] > 1 ) return true;
44 function getMetadataType( $image ) {
48 function isMetadataValid( $image, $metadata ) {
50 $data = unserialize( $metadata );
52 return (boolean
) $data;
54 function getLongDesc( $image ) {
56 $original = parent
::getLongDesc( $image );
59 $metadata = unserialize($image->getMetadata());
62 if( !$metadata ||
$metadata['frameCount'] <= 0 )
66 $info[] = substr( $original, 1, strlen( $original )-2 );
68 if ($metadata['loopCount'] == 0)
69 $info[] = wfMsgExt( 'file-info-png-looped', 'parseinline' );
70 elseif ($metadata['loopCount'] > 1)
71 $info[] = wfMsgExt( 'file-info-png-repeat', 'parseinline', $metadata['loopCount'] );
73 if ($metadata['frameCount'] > 0)
74 $info[] = wfMsgExt( 'file-info-png-frames', 'parseinline', $metadata['frameCount'] );
76 if ($metadata['duration'])
77 $info[] = $wgLang->formatTimePeriod( $metadata['duration'] );
79 $infoString = $wgLang->commaList( $info );
81 return "($infoString)";