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<?php
/**
* @file
* @ingroup Media
*/
/**
* @ingroup Media
*/
class SvgHandler extends ImageHandler {
function isEnabled() {
global $wgSVGConverters, $wgSVGConverter;
if ( !isset( $wgSVGConverters[$wgSVGConverter] ) ) {
wfDebug( "\$wgSVGConverter is invalid, disabling SVG rendering.\n" );
return false;
} else {
return true;
}
}
function mustRender( $file ) {
return true;
}
function normaliseParams( $image, &$params ) {
global $wgSVGMaxSize;
if ( !parent::normaliseParams( $image, $params ) ) {
return false;
}
# Don't make an image bigger than wgMaxSVGSize
$params['physicalWidth'] = $params['width'];
$params['physicalHeight'] = $params['height'];
if ( $params['physicalWidth'] > $wgSVGMaxSize ) {
$srcWidth = $image->getWidth( $params['page'] );
$srcHeight = $image->getHeight( $params['page'] );
$params['physicalWidth'] = $wgSVGMaxSize;
$params['physicalHeight'] = File::scaleHeight( $srcWidth, $srcHeight, $wgSVGMaxSize );
}
return true;
}
function doTransform( $image, $dstPath, $dstUrl, $params, $flags = 0 ) {
if ( !$this->normaliseParams( $image, $params ) ) {
return new TransformParameterError( $params );
}
$clientWidth = $params['width'];
$clientHeight = $params['height'];
$physicalWidth = $params['physicalWidth'];
$physicalHeight = $params['physicalHeight'];
$srcPath = $image->getPath();
if ( $flags & self::TRANSFORM_LATER ) {
return new ThumbnailImage( $image, $dstUrl, $clientWidth, $clientHeight, $dstPath );
}
if ( !wfMkdirParents( dirname( $dstPath ) ) ) {
return new MediaTransformError( 'thumbnail_error', $clientWidth, $clientHeight,
wfMsg( 'thumbnail_dest_directory' ) );
}
$status = $this->rasterize( $srcPath, $dstPath, $physicalWidth, $physicalHeight );
if( $status === true ) {
return new ThumbnailImage( $image, $dstUrl, $clientWidth, $clientHeight, $dstPath );
} else {
return $status; // MediaTransformError
}
}
/*
* Transform an SVG file to PNG
* This function can be called outside of thumbnail contexts
* @param string $srcPath
* @param string $dstPath
* @param string $width
* @param string $height
* @returns TRUE/MediaTransformError
*/
public function rasterize( $srcPath, $dstPath, $width, $height ) {
global $wgSVGConverters, $wgSVGConverter, $wgSVGConverterPath;
$err = false;
if ( isset( $wgSVGConverters[$wgSVGConverter] ) ) {
$cmd = str_replace(
array( '$path/', '$width', '$height', '$input', '$output' ),
array( $wgSVGConverterPath ? wfEscapeShellArg( "$wgSVGConverterPath/" ) : "",
intval( $width ),
intval( $height ),
wfEscapeShellArg( $srcPath ),
wfEscapeShellArg( $dstPath ) ),
$wgSVGConverters[$wgSVGConverter]
) . " 2>&1";
wfProfileIn( 'rsvg' );
wfDebug( __METHOD__.": $cmd\n" );
$err = wfShellExec( $cmd, $retval );
wfProfileOut( 'rsvg' );
}
$removed = $this->removeBadFile( $dstPath, $retval );
if ( $retval != 0 || $removed ) {
wfDebugLog( 'thumbnail', sprintf( 'thumbnail failed on %s: error %d "%s" from "%s"',
wfHostname(), $retval, trim($err), $cmd ) );
return new MediaTransformError( 'thumbnail_error', $width, $height, $err );
}
return true;
}
function getImageSize( $image, $path ) {
return wfGetSVGsize( $path );
}
function getThumbType( $ext, $mime ) {
return array( 'png', 'image/png' );
}
function getLongDesc( $file ) {
global $wgLang;
return wfMsgExt( 'svg-long-desc', 'parseinline',
$wgLang->formatNum( $file->getWidth() ),
$wgLang->formatNum( $file->getHeight() ),
$wgLang->formatSize( $file->getSize() ) );
}
}
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