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<?php

class Ribbon {

    static $content;

    function onParserInit( Parser $parser ) {

		$parser->setHook( 'ribbon', array( __CLASS__, 'renderRibbon' ) );
		return true;

	}

    static function onBeforePageDisplay( OutputPage &$out, Skin &$skin ) {

        $out->addModuleStyles( array (
            'ext.ribbon'
        ) );

    }

    static function renderRibbon( $input, array $args, Parser $parser, PPFrame $frame ) {

        $text = str_replace( "\n", '<br>', htmlspecialchars( $input ));

        if (array_key_exists( 'square', $args ))
            $square = intval($args['']);
        else
            $square = 369;

        if (array_key_exists( 'height', $args ))
            $height = intval($args['height']);
        else
            $height = 35;

        if (array_key_exists( 'fsize', $args ))
            $fsize = intval($args['fsize']);
        else
            $fsize = 15;

        $sign = '';

        $middle = $square / 2;
        $top = $middle - intval($middle * sin(deg2rad(45)));
        $right = intval($middle * cos(deg2rad(45))) - $middle - $height;

        $html = ''
            . '<div class="corner-ribbon-wrapper right" style="'
            .   'width: ' . $square . 'px; '
            .   'height: ' . $square . 'px;">'
            . '<div class="corner-ribbon" style="'
            .   'top: ' . $top . 'px; '
            .   'right: ' . $right . 'px; '
            .   '-webkit-transform: rotate(' . $sign . '45deg);'
            .   '-moz-transform: rotate(' . $sign . '45deg);'
            .   '-ms-transform: rotate(' . $sign . '45deg);'
            .   '-o-transform: rotate(' . $sign . '45deg);'
            .   'transform: rotate(' . $sign . '45deg);'
            .   'font-size: ' . $fsize . 'px;">'
            . '<a class="ribbon-link" style="'
            .   'width: ' . $square . 'px; '
            .   'line-height: ' . $height . 'px;"'
            . 'href="#">' . $text
            . '</a></div></div>';

        $javascript = ''
            . '<script type="text/javascript">'
            .   '(function () {'
            .     'document.body.insertAdjacentHTML( "afterbegin", \'' . $html . '\' );'
            .   '}());'
            . '</script>';

        return array( $javascript, "markerType" => 'nowiki' );

    }

}

?>