question: @ Override public void fullRedraw ( ) { if ( ! ( getWidth ( ) > 0 && getHeight ( ) > 0 ) ) { LoggingUtil . warning ( "Thumbnail of zero size requested: " + visFactory ) ; return ; } if ( thumbid < 0 ) { layer . appendChild ( SVGUtil . svgWaitIcon ( plot . getDocument ( ) , 0 , 0 , getWidth ( ) , getHeight ( ) ) ) ; if ( pendingThumbnail == null ) { pendingThumbnail = ThumbnailThread . queue ( this ) ; } return ; } Element i = plot . svgElement ( SVGConstants . SVG_IMAGE_TAG ) ; SVGUtil . setAtt ( i , SVGConstants . SVG_X_ATTRIBUTE , 0 ) ; SVGUtil . setAtt ( i , SVGConstants . SVG_Y_ATTRIBUTE , 0 ) ; SVGUtil . setAtt ( i , SVGConstants . SVG_WIDTH_ATTRIBUTE , getWidth ( ) ) ; SVGUtil . setAtt ( i , SVGConstants . SVG_HEIGHT_ATTRIBUTE , getHeight ( ) ) ; i . setAttributeNS ( SVGConstants . XLINK_NAMESPACE_URI , SVGConstants . XLINK_HREF_QNAME , ThumbnailRegistryEntry . INTERNAL_PROTOCOL + ":" + thumbid ) ; layer . appendChild ( i ) ; }
target:  Perform a full redraw.