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<?php
require_once 'Horde/MIME/Viewer/images.php';
/**
* The IMP_MIME_Viewer_images class allows images to be displayed
* inline in a message.
*
* $Horde: imp/lib/MIME/Viewer/images.php,v 1.43.10.22 2008/01/02 11:31:37 jan Exp $
*
* Copyright 2002-2008 The Horde Project (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (GPL). If you
* did not receive this file, see http://www.fsf.org/copyleft/gpl.html.
*
* @author Michael Slusarz <slusarz@horde.org>
* @package Horde_MIME_Viewer
*/
class IMP_MIME_Viewer_images extends MIME_Viewer_images {
/**
* The content-type of the generated data.
*
* @var string
*/
var $_contentType;
/**
* Render out the currently set contents.
*
* @param array $params An array with a reference to a MIME_Contents
* object.
*
* @return string The rendered information.
*/
function render($params)
{
$contents = $params[0];
global $browser;
/* If calling page is asking us to output data, do that without any
* further delay and exit. */
if (Util::getFormData('img_data')) {
$this->_contentType = parent::getType();
return parent::render();
}
/* Convert the image to browser-viewable format and display. */
if (Util::getFormData('images_view_convert')) {
return $this->_viewConvert();
}
/* Create the thumbnail and display. */
if (Util::getFormData('images_view_thumbnail')) {
return $this->_viewConvert(true);
}
if (Util::getFormData('images_load_convert')) {
return $this->_popupImageWindow();
}
if ($contents->viewAsAttachment()) {
if (!$browser->hasFeature('javascript') ||
!$contents->viewAsAttachment(true)) {
/* If either:
+ The browser doesn't support javascript
+ We are not viewing in a popup window
Then simply render the image data. */
$this->_contentType = parent::getType();
return parent::render();
} elseif ($browser->isViewable(parent::getType())) {
/* The browser can display the image type directly - just
output the javascript code to render the auto resize popup
image window. */
return $this->_popupImageWindow();
}
}
if ($browser->isViewable($this->mime_part->getType())) {
/* If we are viewing inline, and the browser can handle the image
type directly, output an <img> tag to load the image. */
$alt = $this->mime_part->getName(false, true);
return Horde::img($contents->urlView($this->mime_part, 'view_attach'), $alt, null, '');
} else {
/* If we have made it this far, than the browser cannot view this
image inline. Inform the user of this and, possibly, ask user
if we should convert to another image type. */
$msg = _("Your browser does not support inline display of this image type.");
if ($contents->viewAsAttachment()) {
$msg .= '<br />' . sprintf(_("Click %s to download the image."), $contents->linkView($this->mime_part, 'download_attach', _("HERE"), array('viewparams' => array('img_data' => 1)), true));
}
/* See if we can convert to an inline browser viewable form. */
$img = $this->_getHordeImageOb(false);
if ($img && $browser->isViewable($img->getContentType())) {
if ($contents->viewAsAttachment()) {
$convert_link = Horde::link($contents->urlView($this->mime_part, 'view_attach', array('images_load_convert' => 1, 'popup_view' => 1))) . _("HERE") . '</a>';
} else {
$convert_link = $contents->linkViewJS($this->mime_part, 'view_attach', _("HERE"), null, null, array('images_load_convert' => 1));
}
$msg .= '<br />' . sprintf(_("Click %s to convert the image file into a format your browser can view."), $convert_link);
}
return $contents->formatStatusMsg($msg);
}
}
/**
* Return the content-type
*
* @return string The content-type of the output.
*/
function getType()
{
if ($this->_contentType) {
return $this->_contentType;
} else {
return 'text/html; charset=' . NLS::getCharset();
}
}
/**
* Render out attachment information.
*
* @param array $params An array with a reference to a MIME_Contents
* object.
*
* @return string The rendered text in HTML.
*/
function renderAttachmentInfo($params)
{
$contents = &$params[0];
/* Display the thumbnail link only if we show thumbs for all images or
if image is over 50 KB. */
if (!$this->getConfigParam('allthumbs') &&
($this->mime_part->getBytes() < 51200)) {
return '';
}
if (is_a($contents, 'IMP_Contents')) {
$this->mime_part = &$contents->getDecodedMIMEPart($this->mime_part->getMIMEId(), true);
}
/* Check to see if convert utility is available. */
if (!$this->_getHordeImageOb(false)) {
return '';
}
$status = array(
sprintf(_("An image named %s is attached to this message. A thumbnail is below."),
$this->mime_part->getName(true)),
);
if (!$GLOBALS['browser']->hasFeature('javascript')) {
$status[] = Horde::link($contents->urlView($this->mime_part,
'view_attach', array('popup_view' => 1))) .
Horde::img($contents->urlView($this->mime_part,
'view_attach', array('images_view_thumbnail' => 1), false),
_("View Attachment"), null, '') . '</a>';
} else {
$status[] = $contents->linkViewJS($this->mime_part, 'view_attach',
Horde::img($contents->urlView($this->mime_part,
'view_attach', array('images_view_thumbnail' => 1),
false), _("View Attachment"), null, ''), null, null,
null);
}
return $contents->formatStatusMsg($status, Horde::img('mime/image.png',
_("Thumbnail of attached image"), null, $GLOBALS['registry']->getImageDir('horde')), false);
}
/**
* Generate the HTML output for the JS auto-resize view window.
*
* @access private
*
* @return string The HTML output.
*/
function _popupImageWindow()
{
$params = $remove_params = array();
if (Util::getFormData('images_load_convert')) {
$params['images_view_convert'] = 1;
$remove_params[] = 'images_load_convert';
} else {
$params['img_data'] = 1;
}
$self_url = Util::addParameter(Util::removeParameter(Horde::selfUrl(true), $remove_params), $params);
$title = MIME::decode($this->mime_part->getName(false, true));
return parent::_popupImageWindow($self_url, $title);
}
/**
* View thumbnail sized image.
*
* @access private
*
* @param boolean $thumb View thumbnail size?
*
* @return string The image data.
*/
function _viewConvert($thumb = false)
{
$mime = $this->mime_part;
$img = $this->_getHordeImageOb();
if ($img) {
if ($thumb) {
$img->resize(96, 96, true);
}
$type = $img->getContentType();
$data = $img->raw(true);
}
if (!$img || !$data) {
$type = 'image/png';
$data = file_get_contents(IMP_BASE . '/themes/graphics/mini-error.png');
}
$mime->setType($type);
$this->_contentType = $type;
$mime->setContents($data);
return $mime->getContents();
}
/**
* Return a Horde_Image object.
*
* @access private
*
* @param boolean $load Whether to load the image data.
*
* @return Horde_Image The requested object.
*/
function _getHordeImageOb($load = true)
{
include_once 'Horde/Image.php';
$params = array('temp' => Horde::getTempdir());
if (!empty($GLOBALS['conf']['image']['convert'])) {
$img = &Horde_Image::singleton('im', $params);
} elseif (Util::extensionExists('gd')) {
$img = &Horde_Image::singleton('gd', $params);
} else {
return false;
}
if (is_a($img, 'PEAR_Error')) {
return false;
}
if ($load) {
$ret = $img->loadString(1, $this->mime_part->getContents());
if (is_a($ret, 'PEAR_Error')) {
return false;
}
}
return $img;
}
/**
* Can this driver render the the data inline?
*
* @return boolean True if the driver can display inline.
*/
function canDisplayInline()
{
/* Only display the image inline if the configuration parameter is set,
the browser can actually display it, and the size of the image is
small. */
global $browser;
if (($this->getConfigParam('inline')) && ($browser->isViewable($this->mime_part->getType())) &&
($this->mime_part->getBytes() < 51200)) {
return true;
} else {
return false;
}
}
}
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