/**
* This function will do the actual work of creating a thumbnail image.
*
* @param $width The maximum width of the thumbnail.
* @param $height The maximum height of the thumbnail.
* @param $cache (optional) Indicate if the thumbnails should be cached. By default, caching is turned off.
*
* @internal
*/
function &_createThumbnail($width, $height, $cache = true)
{
// Check if the GD library is loaded.
if (!extension_loaded('gd')) {
$this->_error('YD_gd_not_installed');
}
// Include phpThumb
require_once 'phpThumb/phpthumb.class.php';
// Create a new thumbnail object
$thumb = new phpThumb();
$thumb->src = $this->getAbsolutePath();
// Set the options for the creation of thumbnails
$thumb->config_nohotlink_enabled = false;
$thumb->config_cache_directory = YD_DIR_TEMP;
// Set the width and the height
$thumb->w = $width;
$thumb->h = $height;
// Create the cached thumbnail
$cacheFName = $thumb->GenerateCachedFilename();
$cacheFName .= $this->getLastModified();
$cacheFName .= $this->getAbsolutePath();
$cacheFName = YD_TMP_PRE . 'N_' . md5($cacheFName) . '.tmn';
$cacheFName = YD_DIR_TEMP . '/' . $cacheFName;
// Check if caching is enabled
if ($cache == true) {
// Output the cached version if any
if (is_file($cacheFName)) {
$img = new YDFSImage($cacheFName);
header('Content-type: ' . $img->getMimeType());
echo $img->getContents();
die;
}
}
// Width should be positive integer
if ($width < 1) {
$this->_error();
}
// Height should be positive integer
if ($width < 1) {
$this->_error();
}
// Generate the thumbnail
$thumb->GenerateThumbnail();
// Check if caching is enabled
if ($cache == true) {
$thumb->RenderToFile($cacheFName);
}
// Return the thumbnail object
return $thumb;
}
/**
* If sending an HTML message with embedded images, use this function
* to add the image.
*
* @param $file The image file path.
* @param $c_type (optional) The content type of the image or file.
* @param $name (optional) The filename of the image.
*/
function addHTMLImage($file, $c_type = '', $name = '')
{
if (!YDObjectUtil::isSubClass($file, 'YDFSImage')) {
$file = new YDFSImage($file);
}
$data = $file->getContents();
if (empty($name)) {
$name = $file->getBaseName();
}
if (empty($c_type)) {
$c_type = $file->getMimeType();
}
$this->_msg->addHTMLImage($data, $name, $c_type);
}
/**
* This function is used to output an error image.
*
* @param $name (optional) Name of the error image. Default image that is shown is the generic
* "YD_ydfsimage_fatal_error".
*
* @internal
*/
function _error($name = 'YD_ydfsimage_fatal_error')
{
$img = new YDFSImage(YD_DIR_HOME . '/images/' . $name . '.gif');
header('Content-type: ' . $img->getMimeType());
echo $img->getContents();
die;
}
