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Dir : ~/usr/share/psa-horde/imp/lib/Mime/Viewer/

Edit File: Pdf.php

<?php
/**
 * Copyright 2008-2017 Horde LLC (http://www.horde.org/)
 *
 * See the enclosed file COPYING for license information (GPL). If you
 * did not receive this file, see http://www.horde.org/licenses/gpl.
 *
 * @category  Horde
 * @copyright 2008-2017 Horde LLC
 * @license   http://www.horde.org/licenses/gpl GPL
 * @package   IMP
 */

/**
 * Handler to generate thumbnails for PDF attachments.
 *
 * @author    Michael Slusarz <slusarz@horde.org>
 * @category  Horde
 * @copyright 2008-2017 Horde LLC
 * @license   http://www.horde.org/licenses/gpl GPL
 * @package   IMP
 */
class IMP_Mime_Viewer_Pdf extends Horde_Mime_Viewer_Pdf
{
    /**
     * This driver's display capabilities.
     *
     * @var array
     */
    protected $_capability = array(
        'full' => true,
        'info' => true,
        'inline' => false,
        'raw' => false
    );

/**
     * Return the full rendered version of the Horde_Mime_Part object.
     *
     * URL parameters used by this function:
     *   - pdf_view_thumbnail: (boolean) Output the thumbnail info.
     *
     * @return array  See parent::render().
     */
    protected function _render()
    {
        /* Create the thumbnail and display. */
        if (!$GLOBALS['injector']->getInstance('Horde_Variables')->pdf_view_thumbnail) {
            return parent::_render();
        }

$img = $this->_getHordeImageOb(true);

if ($img) {
            $img->resize(150, 150, true);
            $type = $img->getContentType();
            $data = $img->raw(true);
        }

if (!$img || !$data) {
            $type = 'image/png';
            $img_ob = Horde_Themes::img('mini-error.png', 'imp');
            $data = file_get_contents($img_ob->fs);
        }

return array(
            $this->_mimepart->getMimeId() => array(
                'data' => $data,
                'type' => $type
            )
        );
    }

/**
     * Return the rendered information about the Horde_Mime_Part object.
     *
     * @return array  See parent::render().
     */
    protected function _renderInfo()
    {
        /* Check to see if convert utility is available. */
        if (!$this->_getHordeImageOb(false)) {
            return array();
        }

$status = new IMP_Mime_Status(_("This is a thumbnail of a PDF file attachment."));
        $status->icon('mime/image.png');

switch ($GLOBALS['registry']->getView()) {
        case Horde_Registry::VIEW_MINIMAL:
            $status->addText(Horde::link($this->getConfigParam('imp_contents')->urlView($this->_mimepart, 'view_attach')) . $this->_outputImgTag() . '</a>');
            break;

default:
            $status->addText($this->getConfigParam('imp_contents')->linkViewJS($this->_mimepart, 'view_attach', $this->_outputImgTag(), null, null, null));
            break;
        }

return array(
            $this->_mimepart->getMimeId() => array(
                'data' => '',
                'status' => $status,
                'type' => 'text/html; charset=' . $this->getConfigParam('charset')
            )
        );
    }

/**
     * Return a Horde_Image object.
     *
     * @param boolean $load  Whether to load the image data.
     *
     * @return mixed  The Hore_Image object, or false on error.
     */
    protected function _getHordeImageOb($load)
    {
        if (!$this->getConfigParam('thumbnails')) {
            return false;
        }

try {
            $img = $GLOBALS['injector']->getInstance('Horde_Core_Factory_Image')->create();
        } catch (Horde_Exception $e) {
            return false;
        }
        if (!$img->hasCapability('multipage') && !$img->hasCapability('pdf')) {
            return false;
        }

if ($load) {
            try {
                $img->loadString($this->_mimepart->getContents());
            } catch (Horde_Image_Exception $e) {
                return false;
            }
        }

try {
            return $img->getImageAtIndex(0, true, 'white');
        } catch (Horde_Image_Exception $e) {
            return false;
        }
    }

/**
     * Output an image tag for the thumbnail.
     *
     * @return string  An image tag.
     */
    protected function _outputImgTag()
    {
        return '<img src="' . $this->getConfigParam('imp_contents')->urlView($this->_mimepart, 'view_attach', array('params' => array('pdf_view_thumbnail' => 1)))->setRaw(false) . '" alt="' . htmlspecialchars(_("View PDF File"), ENT_COMPAT, $this->getConfigParam('charset')) . '" />';
    }

}