Markup.php

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<?php
#require_once 'Zend/Pdf/Element.php';
#require_once 'Zend/Pdf/Element/Array.php';
#require_once 'Zend/Pdf/Element/Dictionary.php';
#require_once 'Zend/Pdf/Element/Name.php';
#require_once 'Zend/Pdf/Element/Numeric.php';
#require_once 'Zend/Pdf/Element/String.php';


#require_once 'Zend/Pdf/Annotation.php';

class Zend_Pdf_Annotation_Markup extends Zend_Pdf_Annotation
{
    const SUBTYPE_HIGHLIGHT = 'Highlight';
    const SUBTYPE_UNDERLINE = 'Underline';
    const SUBTYPE_SQUIGGLY  = 'Squiggly';
    const SUBTYPE_STRIKEOUT = 'StrikeOut';

    public function __construct(Zend_Pdf_Element $annotationDictionary)
    {
        if ($annotationDictionary->getType() != Zend_Pdf_Element::TYPE_DICTIONARY) {
            #require_once 'Zend/Pdf/Exception.php';
            throw new Zend_Pdf_Exception('Annotation dictionary resource has to be a dictionary.');
        }

        if ($annotationDictionary->Subtype === null  ||
            $annotationDictionary->Subtype->getType() != Zend_Pdf_Element::TYPE_NAME  ||
            !in_array( $annotationDictionary->Subtype->value,
                       array(self::SUBTYPE_HIGHLIGHT,
                             self::SUBTYPE_UNDERLINE,
                             self::SUBTYPE_SQUIGGLY,
                             self::SUBTYPE_STRIKEOUT) )) {
            #require_once 'Zend/Pdf/Exception.php';
            throw new Zend_Pdf_Exception('Subtype => Markup entry is omitted or has wrong value.');
        }

        parent::__construct($annotationDictionary);
    }

    public static function create($x1, $y1, $x2, $y2, $text, $subType, $quadPoints)
    {
        $annotationDictionary = new Zend_Pdf_Element_Dictionary();

        $annotationDictionary->Type    = new Zend_Pdf_Element_Name('Annot');
        $annotationDictionary->Subtype = new Zend_Pdf_Element_Name($subType);

        $rectangle = new Zend_Pdf_Element_Array();
        $rectangle->items[] = new Zend_Pdf_Element_Numeric($x1);
        $rectangle->items[] = new Zend_Pdf_Element_Numeric($y1);
        $rectangle->items[] = new Zend_Pdf_Element_Numeric($x2);
        $rectangle->items[] = new Zend_Pdf_Element_Numeric($y2);
        $annotationDictionary->Rect = $rectangle;

        $annotationDictionary->Contents = new Zend_Pdf_Element_String($text);

        if (!is_array($quadPoints)  ||  count($quadPoints) == 0  ||  count($quadPoints) % 8 != 0) {
            #require_once 'Zend/Pdf/Exception.php';
            throw new Zend_Pdf_Exception('$quadPoints parameter must be an array of 8xN numbers');
        }
        $points = new Zend_Pdf_Element_Array();
        foreach ($quadPoints as $quadPoint) {
            $points->items[] = new Zend_Pdf_Element_Numeric($quadPoint);
        }
        $annotationDictionary->QuadPoints = $points;

        return new Zend_Pdf_Annotation_Markup($annotationDictionary);
    }
}